Front Cover PDF Off Road Thunder (39in) [Operation] [English]

User Manual: PDF T E X T F I L E S

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DECEMBER 1999

16-20041-101

http://www.midway.com

Sit-In,

Dedicated

39” Video

Game

Operation Manual

zSetup zOperation zAudits zWiring zServicing zTroubleshooting zParts

Midway Games Inc., 3401 North California Avenue, Chicago, Illinois 60618–5899 USA

-ii-

QUICK-START LINKING GUIDE

NOTICE: Before completing installation, verify that each cabinet has a separate and

unique ID. Otherwise the link won’t function. For further information, see Linked-Play

Adjustments Menu in Chapter Three of this manual.

NOTICE: To link three or four cabinets, you must use an Ethernet hub.

SET UP THE LINKS

[ ] 1. Switch off power to all cabinets. Remove cabinet access doors and linking cables. Check cabinet

linking cables. One end of each linking cable must attach to the Arcade Computer’s network

interface jack.

[ ] 2. To link two cabinets: If you’re only linking two cabinets, use one coupler. You don’t need a hub.

(You’ll find a coupler in a Manila envelope inside the cashbox.)

[ ] 3. To link three or more cabinets: You need to add a hub to your network. Place the hub near the

rear of the cabinets. Connect all linking cables. When you use a hub, don’t use any couplers.

[ ] 4. Turn on cabinet power.

ADJUST GAME OPTIONS

CAUTION: Don’t connect or disconnect cables to the game electronics or hub with the

power on. Otherwise, you may damage the electronics and void your warranty.

[ ] 1. Find the diagnostic switches behind each cabinet’s coin door. Press and hold each cabinet’s

TEST MODE button to enter the Menu System.

[ ] 2. From each cabinet’s Operator Menu, select the Adjustments Menu.

[ ] 3. From each cabinet’s Adjustments Menu, select the Linked Play Adjustments Menu.

[ ] 4. LINKED PLAY. At each cabinet, set the LINKED PLAY option to YES.

[ ] 5. UNIT ID. Each cabinet must have a unique unit ID. Set the option UNIT ID to a separate number

for each cabinet.

[ ] 6. EXIT the menu system.

[ ] 7. RESTART ALL CABINETS. After the machines reinitialize, they’ll operate in Linked Mode.

[ ] 8. TEST THE SYSTEM. Test the network by playing a Linked Mode game on all linked machines.

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Setup 1-1

OFFROAD

FFROADFFROAD

FFROAD

THUNDER

THUNDERTHUNDER

THUNDER

CHAPTER

SETUP

NOTICE: This manual is subject to change without notice. Midway reserves the right to make

improvements in equipment function, design, or components as progress in engineering or

manufacturing methods warrant.

Fill out and mail in the Game Information Card. Include the game serial number from the label on

the rear of the cabinet. For your records, write the game serial number in the manual. SERIAL

NUMBER _______________________________________________________

Setup 1-2

SAFETY INSTRUCTIONS

The following safety instructions apply to operators and service personnel. Read these instructions before

preparing your game for play. Other safety instructions appear throughout this manual.

DEFINITIONS OF SAFETY TERMS

DANGER: If you fail to avoid this hazard, it will cause death or serious injury.

WARNING: If you fail to avoid this hazard, it could cause death or serious injury.

CAUTION: If you fail to avoid this hazard, it may cause minor or moderate injury. CAUTION also alerts

you about unsafe practices.

NOTICE indicates information of special importance.

WARNING: TRANSPORTING GAMES. This game contains glass and fragile

electronic devices. Use appropriate care when transporting this game. Avoid rough

handling when moving the cabinet. Don’t move this game with the power on.

WARNING: DISCONNECT POWER. Always turn power OFF and unplug the game

before servicing or adjusting. Installing or repairing PC boards with power ON can

damage components and void the warranty. Be sure to securely install ground wires.

WARNING: GROUND GAMES. Avoid electrical shocks! Don’t plug in a game until you

have inspected and properly grounded it. Only plug this game into a grounded, three-

wire outlet. Don’t use a “cheater” plug, or cut off the ground pin on the line cord.

WARNING: HAZARD TO EPILEPTICS. A small portion of the population has a

condition which may cause epileptic seizures or momentary loss of consciousness

when viewing certain kinds of flashing lights or patterns that are present in our daily

environment. These persons experience seizures while watching some television

pictures or playing certain video games. People who have not had seizures may

nonetheless have an undetected epileptic condition.

If anyone in your family has experienced symptoms linked to an epileptic condition

(e.g., seizures or loss of awareness), consult your physician before using video games.

Parents should observe their children while they play video games. If you or your child

experience the following symptoms: dizziness, altered vision, eye or muscle twitching,

involuntary movements, loss of awareness, disorientation, or convulsions, discontinue

use immediately and consult a physician.

WARNING: AVOID ELECTRICAL SHOCKS. This video game system does not utilize

an isolation transformer. Internal, cabinet AC isn’t isolated from the external, AC line.

WARNING: HANDLE FLUORESCENT TUBE AND CRT WITH CARE. If you drop a

fluorescent tube or CRT and it breaks, it will implode! Shattered glass can fly eight feet

or more from the implosion.

CAUTION: CHECK POWER SELECTOR. Set the 110/220VAC selector on the power

supply for the correct line voltage. Check the selector setting before switching on the

game.

Setup 1-3

CAUTION: USE PROPER FUSE. Avoid electrical shock! Replacement fuses must be

of the same type as those they replace. Fuse voltage and current ratings must match

ratings on the original fuse.

CAUTION: ATTACH CONNECTORS PROPERLY. Be sure that printed circuit board

(PCB) connectors mate properly. If connectors don’t slip on easily, don’t force them. A

reversed connector may damage your game and void the warranty. Connector keys

only allow a connector to fit one set of pins on a board.

CAUTION: TAKE CARE WHEN SHIPPING HARD DISKS. The hard disk drive must

be packed in an anti-static bag. When shipping the drive for repair or replacement,

pack it in an approved container (P/N 08-8068). Never stack or drop hard disk drives.

PRODUCT SPECIFICATIONS

Operating Requirements

Location

Domestic

Foreign

Japan

Electrical Power

120VAC @ 60Hz 4.0 Amps

230VAC @ 50Hz 2.0 Amps

100VAC @ 50Hz 4.0 Amps

Temperature

32°F to 100°F

(0°C to 38°C)

Humidity

Not to exceed 95% relative

Cabinet Statistics

Shipping Dimensions

Cabinet Section Control Section Shipping Dimensions

Universal Pedestal Shipping Weight

Width

Depth

Height

58” (147 cm)

36” (91 cm)

79” (201 cm)

41” (104 cm)

33” (83.8 cm)

42” (107 cm)

Width

Depth

Height

22.0” (55.8 cm)

36.0” (91.4 cm)

51.0” (130 cm)

Cabinet, 475 lbs (215 kg)

Control Section, 300 lbs (137 kg)

Universal Pedestal, 125 lbs (57 kg)

Equipment Characteristics

Video Monitor

Medium Resolution RGB

39” (99 cm) CRT

Audio System

Digital Stereo Sound

Two 5.5” (14 cm) and Two

6.5” (16.5 cm) Speakers

Currency Acceptors

1 Coin Mechanism, Coin Counter

Dollar Bill Validator Ready

Electronic Coin Acceptor Ready

Game Characteristics

Player Variables

1 to 4 players per game (with linking)

Choice of vehicle and course

High Score Recognition

Operator Variables

Coinage, Game Options,

Difficulty, Force, Volume,

Audits, Statistics

Diagnostics

Automatic Power-Up Self-Test

Manual, Multi-Level Menu System

Setup 1-4

PRODUCT CONFIGURATION

• Standalone Units

Each game is ready to play right out of the box. You can use the game menu system to set player

variables in advance. Or you can leave these choices to players.

• Linked Units

Linking allows players to compete against each other (on one course). Operator menus are the same

as in stand-alone games. Crossover couplers and linking cables to connect two games are factory

installed. You can interconnect up to four games. To do this, use the optional Hub Linking Kit.

GAME SETUP

WARNING: The cabinet is top-heavy. Don’t use the pedestal seat as a handle or lever.

When moving the game, use the two handles on the back of the cabinet.

[ ] 1. Remove and set aside items from shipping containers. You’ll find casters, levelers, and mounting

hardware packed with the pedestal. Inspect the exterior of the cabinet for any signs of damage.

[ ] 2. Remove the keys from the steering wheel. Unlock and open the coin, cash box, and rear doors.

You’ll find electrical cords and spare parts in the cash box.

Setup 1-5

[ ] 3. Unlock and remove the monitor cabinet’s rear door. Inspect the cabinet interior for damage.

Check major assemblies to assure secure mounting. Assure that nothing blocks fan airflow.

[ ] 4. Replace and lock the monitor cabinet’s rear door. Locate the casters. Notice that two of the

swivel casters have red dots on their bases. These two are special-purpose, high-compliance

casters. Tilt the dash cabinet. Install the two casters with red dots at the rear of the dash cabinet.

Each caster mounts to a group of threaded studs. Tighten caster-mounting nuts firmly.

[ ] 5. Tilt the dash cabinet. Install two swivel casters without dots at the front of the dash cabinet. Each

caster mounts to a group of threaded studs. Tighten caster-mounting nuts firmly.

[ ] 6. The pedestal uses three casters. Tilt the pedestal. Install a swivel caster on the front studs. Install

locking casters on the rear studs. Tighten caster-mounting nuts firmly.

[ ] 7. Stand the dash cabinet upright and make certain it is stable. Move the game to its intended

location. Level the cabinet. We’ve designed this game for use only in a fixed position. Assure that

final leg leveler adjustments raise the swivel casters off the floor. Distribute weight equally on

each cabinet corner. Tighten the leveler nuts.

Location of Pedestal Assembly Mounting Holes

[ ] 8. To protect seat pedestal mounting rails during shipment, the factory bolts them inside the dash

cabinet. Remove the 1/4-20 hex-head bolts that secure the rails. Slide the rails partway out of the

bottom-front cabinet opening. (See the nearby diagram for proper placement.)

[ ] 9. Fasten down the rails in this new position. Firmly tighten the rail bolts, but don’t torque them

down. Slide the seat pedestal onto the rails. Vertically position the rails. Remove the seat

pedestal. Tighten the rail bolts with a wrench.

Setup 1-6

NOTICE: When you mate the cabinets, take care to avoid pinching wires!

[ ] 10. Roll the seat pedestal near the dash cabinet. Leave enough space to attach the wiring harness.

Mate each seat pedestal cable connector with its cabinet cable connector. Press connectors

firmly to seat contacts.

[ ] 11. Align the seat pedestal opening with the rail ends. Slide the seat pedestal forward onto the

extended mounting rails. Align holes. Attach the seat pedestal using 1/4-20, tamper-resistant

screws and large flat washers. You’ll find a T27 wrench with the spare parts. Use it to tighten

these screws firmly.

[ ] 12. Fasten the cabinet joining brackets to the monitor cabinet. Align the dash and monitor cabinets.

Carefully slide the dash cabinet between the cabinet joining brackets. When the cabinets are

flush, attach the cabinet joining brackets to the dash cabinet.

[ ] 13. Attach the wiring harness. Mate each dash cable connector with its monitor cabinet cable

connector. Press connectors firmly to seat contacts.

[ ] 14. You can install an extra padlock to secure the rear door. You’ll find a hasp in the spare parts bag.

Remove the two lock bracket nuts from inside the cabinet, above the rear doorway. Slide the

hasp onto the bolts. Now the hasp should protrude from the hole in the cabinet back. Reinstall

the nuts.

[ ] 15. Modify the lock plate at the top of the rear door. Remove the bolts and nuts from the lock plate.

Rotate the plate so that the slot will be above the door. Reinstall and tighten bolts and nuts.

[ ] 16. The power cord is with the spare parts. Remove and save four screws from the line cord cover at

the cabinet rear. Match the holes on the IEC plug with the prongs in the receptacle. Push the plug

firmly to seat the line cord. Hold the cord flat against the cabinet and reinstall the cover plate.

(Point the indentation downward, so that the cord exits toward the cabinet bottom.)

[ ] 17. Refer to the cabinet wiring diagram (elsewhere in this manual). Check to see that cable

connectors are correctly secured. Inspect for damaged connectors. Don’t force connectors. Most

connectors are keyed to prevent reversed connections. Before you plug the line cord into an A.C.

outlet, verify that game electronics are set to correct local A.C. line voltage.

Setup 1-7

Line Cord Installation

[ ] 18. Plug the game into a grounded (3-terminal) AC wall outlet. Switch on the game at the on/off

switch. (This switch is on the cabinet roof. Face the cabinet’s back. Find the on/off switch to your

right.) The game will power up and begin self-diagnostics. If diagnostics find no errors, the game

enters its Attract Mode of operation. (Attract Mode includes scenes and sounds from typical

races, player’s scores, messages, etc.)

[ ] 19. Unlock and open the coin door. Locate the control switches. Press TEST MODE to enter the

Menu System.

[ ] 20. Select “DISK TESTS” at the Diagnostics Menu. Run all the tests in order to verify correct drive

operation.

[ ] 21. Select “SWITCH TESTS” at the Diagnostics Menu. Check to be sure that all control switches

work.

[ ] 22. Select “SOUND TESTS” at the Diagnostics Menu. Verify operation of each speaker.

[ ] 23. Select “FORCE FEEDBACK TESTS” at the Diagnostics Menu. Verify the presence of steering

resistance.

[ ] 24. Select “CALIBRATE CONTROLS” at the Main Menu. Set steering and throttle limits for maximum

accuracy.

[ ] 25. Select “START THE GAME” at the Main Menu. The system should enter Attract Mode. Open the

coin door and press the SERVICE CREDITS button to allow game play. Press the START button

to begin play. Listen to the audio while playing the game. Note sound irregularities (phase

problems, no low frequencies, mono audio from stereo speakers, etc.). If necessary, check the

wiring harness for internal shorts or strapped connections.

[ ] 26. Change the volume and make adjustments as necessary. Close and lock all open doors. Tighten

the leveler nuts. Engage the caster locks.

Setup 1-8

LINKED OPERATION

Equipment Requirements

Linked Mode permits players to compete between networked cabinets in real time. The linking program is

player selectable, so that each cabinet serves player needs.

To achieve linked operation, you must connect cabinets. The factory installs one linking cable in each

cabinet.

Coupler

Cabinet

Cabinet Cabinet

Coupler

Link Two Cabinets with a Coupler

• TO LINK TWO CABINETS, use a crossover coupler. All cabinets contain a crossover coupler to

connect two cabinets together. Use only one coupler between each pair of cabinets. Passive

electronics limit the cable length and number of cabinets that you can link. Most operations attach

linked cabinets, but you can separate cabinets by up to 25 feet. You can add linked pairs as

necessary.

Game

Network

Hub

Game Game

Game

Link Up to Four Cabinets with a Hub

• TO LINK MORE THAN TWO CABINETS, use a network hub. The network hub’s active circuits allow

you to use more and longer cables. Notice that the hub replaces the coupler between cabinets. Each

hub can connect several cabinets. The hub’s active electronics permits use of larger networks. Most

operations attach linked cabinets, but you can separate cabinets by up to 300 feet. You can add

linked cabinets as necessary.

NOTICE: You can’t link more than four Offroad Thunder cabinets.

Setup 1-9

Networking Pointers

• Protect exposed wiring from player foot traffic, cleaning crews, service personnel, etc. Use approved

conduit or wire channels to support cables. Network modular connectors don't include strain relief.

• Keep cables away from heat, moisture and electromagnetic fields. (Avoid neon signs, fluorescent

fixtures, two-way radios, cordless telephones, power circuits, speaker wiring, etc.).

• Universal RJ-45 modular plugs aren't numbered or coded. Clearly mark cabinet network connections.

Otherwise, someone could confuse them with computer or telephone circuits.

• The factory supplies network cables with the cabinets. These cables will reach the hub in networks of

four or fewer cabinets.

• Use only Category 5, twisted pair cable.

• If you want to monitor network activity, you can locate the hub remotely. You can use long cables, if

they satisfy these requirements: (1) Cables must not exceed a length of 328 feet or 100 meters. (2)

Cables must be Category 3 (or higher), 100 ohm, unshielded, twisted pair, communications-grade

wiring. (3) You must not use standard telephone cables.

Network Wiring Setup

NOTICE: Don't use crossover couplers in a hub installation. Otherwise, your network

won’t operate properly.

[ ] 1. Raise the leg levelers. Roll the cabinets to their destination. Lower the leg levelers.

[ ] 2. Verify game operation. Make necessary repairs or adjustments before making changes to the

cabinets.

[ ] 3. Shut down all machines.

[ ] 4. Place the hub near the center of the linked cabinet array.

[ ] 5. You’ll find a linking cable coiled up inside each cabinet. Cut the cable tie. Locate the cable’s free

end. Uncoil enough cable to reach the hub through the rear box of the cabinet.

[ ] 6. Check the other end of the cable. It should attach to an Arcade Computer network jack. You’ll

find this jack in the middle cabinet box.

[ ] 7. Recoil and retie the remainder of the cable. Repeat the cable connection steps at the other

cabinets.

[ ] 8. Plug the cabinet linking cables into any of the jacks on the hub rear panel.

[ ] 9. Plug the hub’s AC power adapter into its jack on the hub.

[ ] 10. Set the hub front panel switches to the LNK (link) position.

[ ] 11. Retract excess cable into the cabinet coils so that the cables don't touch the floor. Retracting the

cable keeps it away from cabinet wheels during relocation.

[ ] 12. Connect the AC Adapter and line cords to AC power. Turn on each of the cabinets. Examine the

screens of all cabinets.

CAUTION: Don’t connect or disconnect cables to the game electronics or hub with the

power on. Otherwise, you may damage the electronics and void your warranty.

[ ] 13. Restart all machines.

Setup 1-10

[ ] 14. The cabinets will begin the Power-On Self Test. If the test doesn’t find any errors, each cabinet

enters its Attract Mode automatically.

[ ] 15. Start up linked cabinets and ensure that each cabinet's player controls affect the same vehicle on

all screens. The CPU and hub LEDS will indicate communication activity between the two

cabinets.

[ ] 16. Close and lock the coin doors. Reinstall and lock the rear cabinet doors. Lower all leg levelers

until wheels lift off of the floor. Then level the cabinets.

Software Setup

[ ] 1. Unlock the coin doors of all cabinets.

[ ] 2. Find the diagnostic switches behind each cabinet’s coin door. Press and hold each cabinet’s

TEST MODE button to enter the Menu System.

[ ] 3. From each cabinet’s Operator Menu, select the Adjustments Menu.

[ ] 4. From each cabinet’s Adjustments Menu, select the Linked Play Adjustments Menu.

[ ] 5. LINKED PLAY. At each cabinet, set the LINKED PLAY option to YES.

[ ] 6. UNIT ID. Each cabinet must have a unique unit ID. Set the option UNIT ID to a separate number

for each cabinet.

[ ] 7. EXIT the menu system.

[ ] 8. RESTART ALL CABINETS. After the machines reinitialize, they’ll operate in Linked Mode.

[ ] 9. TEST THE SYSTEM. Test the network by playing a Linked Mode game on all linked machines.

Operation 2-1

OFFROAD

FFROADFFROAD

FFROAD

THUNDER

THUNDERTHUNDER

THUNDER

CHAPTER

OPERATION

NOTICE: The term VGM refers to the video game machine.

Operation 2-2

GAME OPERATION

STARTING UP

Whenever you turn on the machine or restore power, the system executes boot ROM code. The boot

ROM contains self-diagnostic tests. These tests automatically verify and report the condition of the CPU

and other hardware. If the hardware fails a test, the system displays an error message.

Having passed power-up tests, the system enters Attract Mode. Attract Mode consists of typical game

scenes and sounds, alternating with high scores. Attract Mode continues until game play commences.

Players insert currency or tokens to start the game. Each player selects a truck and a course. Play begins

after a countdown period. The game will progress until players quit or exhaust their playtime. At Game-

Over Mode, players may choose to begin again. If players choose not to continue, then the system

returns to Attract Mode.

ARCADE COMPUTER

This game uses an Arcade Computer to control its functions. The Arcade Computer is a customized

personal computer. Housing the Arcade Computer is a PC-like case. Inside, you’ll recognize the

motherboard, plug-in cards, modular power supply, disk drives, etc. Despite these familiar features,

Midway optimized this computer specifically for this game. The Arcade Computer design permits

improved upgradability and service access without sacrificing ruggedness or reliability.

PLAYER CONTROLS

• ACCELERATOR. The accelerator pedal controls vehicle speed and acceleration.

• BRAKE. The brake pedal stops the vehicle, just like a real brake.

• GEARSHIFT. The gearshift lever controls the amount of engine torque that reaches the wheels. The

player may choose manual or automatic shift operation. Manual shift operation requires the player to

upshift while accelerating and downshift while decelerating. (This shift has no reverse gear.) Players

select automatic or manual shift trucks before racing. Manual shift trucks allow skilled drivers more

control and faster starts.

• NITRO BUTTON. The NITRO button is on the end of the shift lever. If the nitro feature is active,

pressing NITRO adds a power burst. (The button illuminates when nitro is available.)

• START BUTTON. The START button allows a player to begin or continue play, select courses and

trucks, etc.

• STEERING WHEEL. The steering wheel aims the vehicle and provides course condition feedback.

• SLAM CAM. The red SLAM CAM button displays the cockpit view. The viewpoint is from the driver’s

seat inside the truck.

• CRASH CAM. The orange CRASH CAM button provides a close-up, aerial view of the course. The

viewpoint is from above and behind the truck. A truck camera would see this view.

• CHOPPER CAM. The yellow CHOPPER CAM button provides a distant aerial view of the course.

The viewpoint is from above and behind the truck. A tracking helichopper camera would see this

view.

Operation 2-3

Player Panel Controls

OPERATOR CONTROLS

CABINET CONTROLS

• DIP Switches on the MagicBus Board set some system variables. These DIP switches are for

factory use only. Keep them set at their default value, all off. You can adjust game variables, check

bookkeeping totals and perform diagnostics with diagnostic control switches.

• The Monitor Remote Control Board allows you to adjust the video display for optimum viewing.

• The Cabinet POWER Switch turns off the game, but does not reset game variables.

• The Computer POWER Switch turns off the computer. It is on the Arcade Computer. During service

procedures, leave this switch ON. Use the main cabinet power switch to control the power.

DIAGNOSTIC CONTROL SWITCHES

• The SERVICE CREDITS Button allots credits without changing the game's bookkeeping total. The

Menu System occasionally assigns a function to SERVICE CREDITS. Check screen directions for

these additional functions.

• The TEST MODE Button causes the game to enter the menu system. To access the Menu System,

press and hold TEST MODE until the Main Menu appears. Within the menu system, check screen

directions for additional TEST MODE functions.

• VOLUME DOWN and VOLUME UP Buttons set game sound levels. To make minor volume

changes, press either button briefly. To make major changes, press and hold a button. In the menu

system, VOLUME UP moves the item highlight bar up the menu. VOLUME DOWN moves the item

highlight bar downward.

NOTICE: The Attract Mode volume level is separate from the Game Mode volume

level. For greater profits, raise volume levels to add realism and draw attention to this

game.

Operation 2-4

Operator Control Switch Locations

GAME FEATURES

GAME RULES

INSTRUCTIONS

Play instructions appear on the left and right sides of the video monitor.

ONE PLAYER

The player inserts currency or tokens to start the game. Next, the player chooses a truck and course and

presses the START button. The game displays individual statistics periodically, during and after the race.

Additional game information appears on screen as needed.

PLAYER CHOICES

The player can drive any truck on any course. Each truck handles and performs differently. Players learn

which trucks are best for a given course and driving style. Press one of the CAM buttons to select more

trucks.

CONTROLLING A TRUCK

The steering wheel, brake and accelerator control the truck. As in real trucks, the steering wheel directs

the truck. The brake slows or stops the truck, and the accelerator sets speed. A NITRO button on the

gearshift provides an extra burst of power. NITRO flashes to indicate nitro availability. Players must

collect nitro icons along a course by steering directly under the icons. A gauge meters the amount of

stored nitro.

INDICATORS

Across the top of the screen, numeric indicators display truck statistics: A ghost image in the upper-left

screen corner indicates shift type, manual or automatic. A meter in the top-left screen corner displays

engine RPM. A top-right gauge measures remaining nitro fuel. At the screen’s top-center, a digital clock

times the current lap in seconds. As appropriate, the screen also flashes CHECKPOINT.

Operation 2-5

DISPLAYS

The player’s vehicle appears at the center of the screen. The numbers floating above some vehicles

indicate that other humans control them. (These are linked players.) The Arcade Computer controls

trucks without numbers. At the bottom of the screen, another instrument displays relative positions of

nearby trucks. The right side of the screen provides race statistics…

• Position per number of trucks (for example, “11th / 12”)

• The number of cars ahead of the player (“9 cars ahead”)

• A lap timer for each lap (“0:2:00”)

GAME ACTION

Action begins after the “three-two-one” countdown. The announcer hollers “Go!” To continue play, the

player must drive past each checkpoint within the time limit. To decrease time between checkpoints,

players must avoid fixed obstacles and other trucks. Ramps allow players to advance more quickly,

collect hovering nitro icons, or avoid obstacles. (Red nitro icons contain more fuel than blue nitro icons.)

Players can change their view of the action by pressing the view buttons. These buttons are on the left

side of the control panel. Game sounds include announcer comments, engine noise, and other effects.

SCORING

Players who set a speed record may enter their initials in the High Score Table. After a player completes

a certain number of courses, he can choose additional courses. (Adjustments determine the number.)

HEAD-TO-HEAD RACING

Networked cabinets offer players linked, head-to-head racing competition. Each player begins the course-

selection process. A join-in message alerts subsequent players to the possibility of a linked race. If

players don't begin their selection process before this message disappears, their races don't link.

(Unlinked players compete in independent races, as usual.) Players may use the solo feature to decline a

link.

If other players begin selection during the join-in message, the cabinets communicate over the network.

Each additional cabinet sends out its own packet containing a unique unit ID. In return, each cabinet

receives data from active cabinets. A "waiting" message indicates that other players are still selecting

race options. Eventually, the last player finishes selecting or the waiting period ends. At this point, all

linked players see the start screen simultaneously.

Latecomers can't participate in an ongoing linked race. They can begin an independent race. The link

automatically terminates when the game is over. Players can then set up another link.

MAINTENANCE

• Cabinet and Seat

Use plastic-safe, non-abrasive cleaners to avoid damage. Apply cleaner to a clean cloth or sponge.

Use this to wipe the seat or cabinet. Don’t apply cleaner directly to the artwork or cabinet!

• Player Controls

Use plastic-safe non-abrasive cleaners to avoid damage. Apply cleaner to a clean cloth or sponge.

Use this to wipe the player controls. Don’t apply the cleaner directly to the controls!

• Viewing Glass

To clean the glass, you don’t need to switch off power to the game. Apply a mild glass cleaner to a

clean cloth or sponge. Use this to wipe the viewing glass. Don’t apply the cleaner directly to the glass!

Liquid could drip down into switch or motor circuits and cause erratic game operation.

Operation 2-6

NOTES

Diagnostic, Audit & Adjustment Menu System 3-1

OFFROAD

FFROADFFROAD

FFROAD

THUNDER

THUNDERTHUNDER

THUNDER

CHAPTER

DIAGNOSTIC, AUDIT &

ADJUSTMENT MENU SYSTEM

NOTICE: Information in this manual is subject to change without notice. Midway reserves the

right to make improvements in equipment function as progress warrants.

Diagnostic, Audit & Adjustment Menu System 3-2

MENU SYSTEM

WHAT IS THE MENU SYSTEM?

The game’s Menu System is a series of auditing, game adjustment and diagnostic screens. You can

easily access and apply these screens to optimize game performance. For instance…

• Use game audits screens to assess game performance.

• Use adjustment screens to help you to customize game performance. For instance, you can restore

factory default game settings. You can also calibrate player controls for accuracy.

• Use diagnostic screens to verify proper equipment operation.

ACTIVATING THE MENU SYSTEM

Open the coin door. Find the TEST MODE switch inside. Press TEST MODE to invoke the Menu System.

The game system responds by exiting Game Mode and entering Diagnostic Mode. The system runs a

brief self-test, and then displays the Operator Menu. The Operator Menu is the opening screen of the

Menu System.

Game audits, adjustments and diagnostics are line items on the Operator Menu. Selecting an item opens

its submenu. Every submenu presents various options that you may act upon.

OPERATOR MENU

OFF ROAD THUNDER

1999 Midway Home Entertainment Inc.

OFF ROAD THUNDER is a trademark of Midway Home Entertainment Inc.

MIDWAY is a trademark of Midway Games Inc.

Diagnostic, Audit & Adjustment Menu System 3-3

MENU LAYOUT

Menus differ, but related information tends to occupy the same screen locations.

• The block at the top, center of each screen displays the current menu title.

• Data (menu items, video signals, statistics, reports, etc.) appears in the center of the screen.

• Game-operation information appears at the top-center of the screen, between logos.

• Messages (explanations, control functions, revision levels) display at the bottom of the screen.

MENU NAVIGATION CONTROLS

Highlight a menu line item with the middle two diagnostic buttons inside the coin door. (Press VOLUME

UP or VOLUME DOWN.) Select the option with the TEST MODE button. You can only select one

highlighted item at a time. To return the game to play, first highlight START THE GAME. Then press

TEST MODE. (This is the only menu that allows you to exit the Menu System.)

EQUIVALENT MENU NAVIGATION CONTROLS

In most cases, certain player panel buttons duplicate the functions of the diagnostic buttons. You may

find menu navigation easier with the player panel buttons. Here are the player panel functions within the

Menu System…

Player Panel Button Function Equivalent Diagnostic Switch

NITRO Select a menu item (None)

CHOPPER CAM •Select a menu item

•Enter Change Mode

TEST MODE

CRASH CAM Move down the menu VOLUME DOWN

SLAM CAM Move up the menu VOLUME UP

START Various functions, including….

•To bottom of Operator Menu

•Back to Operator Menu

•Cancel

SERVICE CREDITS (for some functions)

Diagnostic, Audit & Adjustment Menu System 3-4

Operator Menu (continued)

Diagnostics Menu

DIAGNOSTICS

Select DIAGNOSTICS MENU at the Operator Menu. The Diagnostics Menu helps you to verify the

electrical and electronic condition of the game.

Highlight a line item with the middle two diagnostic buttons inside the coin door. Select the option with the

TEST MODE button.

DIAGNOSTICS MENU

SWITCH TEST

LAMP TEST

MONITOR PATTERNS MENU

SOUND TEST

RETURN TO PREVIOUS MENU

Diagnostic, Audit & Adjustment Menu System 3-5

Operator Menu (continued)

Diagnostics Menu (continued)

Switch Test Menu

SWITCH TEST

Select SWITCH TEST at the Diagnostics Menu. Use the Switch Test to verify crossed wires, intermittent

conditions, and stuck switches.

Operate the switch and watch the screen display. After completing tests, press TEST MODE three times

to return to the Diagnostics Menu.

SWITCH TEST SCREEN

BUTTON TESTS check player and Diagnostic switches, such as CREDIT, TEST and SLAM CAM.

Activate each button, and the screen indicator changes state. (Gray means off and green means on.)

Release the button and the indicator returns to its previous state. A single indication on the screen should

exactly duplicate each button change.

THE WHEEL TEST indicates the steering wheel position with a moving bar on a graph. The screen also

displays a wheel position number. This number varies between zero (full left) and 255 (full right).

THE GAS TEST indicates the gas pedal position with a moving bar on a graph. The screen also displays

a pedal position number. This number varies between zero (full back) and 255 (full forward).

THE BRAKE TEST indicates the brake pedal position with a moving bar on a graph. The screen also

displays a pedal position number. This number varies between zero (full back) and 255 (full forward).

Diagnostic, Audit & Adjustment Menu System 3-6

Operator Menu (continued)

Diagnostics Menu (continued)

Lamp Test Menu

LAMP TEST

Select LAMP TEST at the Diagnostics Menu. The Lamp Test allows you to check operation of game

lamps. Use the test to check for burned-out bulbs, faulty lamp wiring, etc.

Highlight a test with the middle two diagnostic buttons inside the coin door. Select the option with the

TEST MODE button. Pressing TEST MODE also lights the selected lamp.

LAMP TEST SCREEN

Lamp tests indicate the condition of game lamps. These include lamps in the control panel and overhead

linking sign or optional header. (Unless your cabinet has header lights, the Leader Upper and Leader

Lower tests have no effect.)

For most tests, select a lamp name from the menu. Press TEST MODE (or CHOPPER CAM) to turn on

the selected lamp. Press TEST MODE again to toggle the lamp off. The Tachometer and Speedometer

tests operate slightly differently. These tests lights one LED for each press of TEST MODE. Press

START, SLAM CAM or CRASH CAM to exit. Select ALL LIGHTS to switch on all controlled lamps

simultaneously.

After completing tests, select RETURN TO PREVIOUS MENU. This action closes the Lamp Test Menu

and reopens the Diagnostics Menu.

Diagnostic, Audit & Adjustment Menu System 3-7

Operator Menu (continued)

Diagnostics Menu (continued)

Monitor Patterns Menu

MONITOR PATTERNS TEST

Select MONITOR PATTERNS at the Diagnostics Menu. The Monitor Patterns routine provides test

screens to verify monitor performance or make adjustments.

Highlight a test with the middle two diagnostic buttons inside the coin door. Select the option with the

TEST MODE button.

NOTICE: Use an industrial-grade degaussing coil before attempting monitor

adjustments.

MONITOR PATTERNS MENU

Color Bars paint colored stripes on the screen. Use the color bars to help you to check or adjust monitor

brightness and contrast. The color bars also expose defects in horizontal linearity. Each color bar

consists of 16 intensity levels. On a properly adjusted monitor, the top 15 of these levels are visible. Each

bar should appear sharp, clear, and distinct from bars on either side. Incorrect adjustment can cause

missing detail at the top or bottom of a bar. Bent bars indicate horizontal linearity flaws, such as pie crust,

Diagnostic, Audit & Adjustment Menu System 3-8

pincushion or barrel distortion. (Correct color bar colors, left to right: Green, Red, Blue, Black, White,

Yellow, Magenta, Cyan.)

Set controls as follows: 1. Adjust BRIGHTNESS and CONTRAST to minimum. 2. Turn up BRIGHTNESS

until the pixels in the black stripe begin to glow (turn dark gray). 3. Bring up the CONTRAST control until

you can see 15 bars. Then increase the contrast until you can’t distinguish a difference between the top

two bars.

Crosshatch Patterns consist of an on-screen grid and a series of dots. Crosshatch Patterns help you to

check or adjust several monitor parameters: These parameters include convergence, linearity, active

viewing area and dynamic focus. The grid and the dots should be all white in color, with no fringes or

parallel images. The lines should be straight and the dots round. For more detail on these adjustments,

consult service literature from the monitor manufacturer.

Color Screen tests fill the screen with 100% of the chosen color at normal intensity. The Color Screen

tests help you to check or adjust monitor intensity, black level, blanking and color purity. Each screen

should be absolutely uniform from top to bottom and side to side. No retrace lines or noise should be

visible. Color Screens may not hold their uniformity if the monitor degaussing circuit is defective.

If tests indicate a need for adjustment, use controls on the Monitor Remote Adjustment Board. You can

make other adjustments from the back of the monitor.

White, Gray, and Black Screens fill the screen with black, gray or white at various intensities. These

monochrome screens help you to check or adjust monitor convergence, purity, contrast and intensity.

These screens also simplify black level and color gun control settings. The screens should be uniform

with no color tints or distortion. No retrace lines or noise should be visible.

If tests indicate a need for adjustment, use controls on the Monitor Remote Adjustment Board.

Diagnostic, Audit & Adjustment Menu System 3-9

Operator Menu (continued)

Diagnostics Menu (continued)

Sound Test Menu

SOUND TEST

Select SOUND TEST at the Diagnostics Menu. The Sound Test verifies the operation of the sound

hardware and speakers. Use the Sound Test to find crossed connections, incorrect phase, rattles,

vibration, distortion, etc. The Sound Test screen reports information, but doesn’t permit changes.

Increase the master volume level before beginning this test.

Highlight a test with the middle two diagnostic buttons inside the coin door. Select the option with the

TEST MODE button. Selecting also activates a sound tone. The tone continues to play until you once

again press TEST MODE.

SOUND TEST SCREEN

After choosing a speaker name, listen to the audio tone from that speaker. Only the specified speaker

should produce sound. The other speakers should remain silent.

To exit the Sound Test Menu, highlight RETURN TO PREVIOUS MENU. Then press TEST MODE.

BEEP FRONT SPEAKER

BEEP RIGHT SPEAKER

RETURN TO PREVIOUS MENU

Diagnostic, Audit & Adjustment Menu System 3-10

Operator Menu (continued)

Audits Menu

AUDITS MENU

Select AUDITS MENU at the Operator Menu. The Audits Menu permits you to review game play

statistics. Additional menus provide detailed reports for each player position on game starts, ends,

cabinet abuse, fault conditions, etc.

Highlight a line item with the middle two diagnostic buttons inside the coin door. Select the option with the

TEST MODE button.

GAME AUDITS MENU

Use the auditing information to help you to keep records of the game’s popularity and earnings. You may

also analyze favorite tracks, most frequently used vehicles, and other statistics. These screens report

information, but don’t permit changes.

Examine and record all game audit values before doing service or making repairs on this game.

NOTICE:

Take care when clearing audit information. You can’t restore cleared data. If your audit

data is important to you, back it up before proceeding. Use the OPTION SAVE

AUDITS TO FLOPPY DISK on the Utilities Menu. To clear audits, use the Utilities

Menu.

Diagnostic, Audit & Adjustment Menu System 3-11

Operator Menu (continued)

Audits Menu (continued)

Critical Audits Menu

CRITICAL AUDITS

Select CRITICAL AUDITS at the Audits Menu. The Critical Audits Menu reports general information about

coin counts and game use. This menu reports information, but doesn’t permit changes.

CRITICAL AUDITS MENU

CREDITS and PARTIAL CREDITS permit you to assess currency collection. The other items present

information on game operation.

BONUS CREDITS. A running total of bonus credits that the video game awarded to players.

GAME IN PROGRESS DURING LAST SHUTDOWN. Was the machine in Game-Play Mode when it

entered Diagnostic Mode? This function answers the question.

TIME SINCE LAST POWER-ON. This function measures the period between power-ups. The clock

starts counting whenever you switch off the video game machine.

CRITICAL AUDITS

CREDITS 0

PARTIAL CREDITS 0

BONUS CREDITS 0

GAME IN PROGRESS DURING LAST SHUTDOWN: NO

TIME SINCE LAST POWER-ON: 2 DAYS, 20:36:35

Diagnostic, Audit & Adjustment Menu System 3-12

Operator Menu (continued)

Audits Menu (continued)

System Audits

SYSTEM AUDITS

Select SYSTEM AUDITS at the Audits Menu. The System Audits Menu reports general information about

coin counts and game use. Coin Audits is a read-only screen.

To exit, press TEST MODE.

SYSTEM AUDITS MENU

The System Audits Menu reports total quantities of coins, bills or credits collected by each active device.

The menu does not calculate the value of the collected currency.

This menu reports information, but does not permit you to make changes. To reset the coin, bill, and

credit counters to zero, use the Clear Audits menu.

We recommend that you examine and record audit information before you make changes. Once you’ve

cleared the counters, you can’t retrieve the previous data from the system.

THE COIN COUNT AND BILL COUNT items help you to assess currency collection. The other items

present information on game operation.

RESET, LINK, AND SYNC statistics are measures of the game software’s ability to recover from

conditions that adversely affect game play.

SYSTEM AUDITS

POWER ON TIME 0:00:00

RACE TIME 0:00:00

LINKED RACE TIME 0:00:00

POWER ON TIME SINCE LAST RESET 0:00:00

RACE TIME SINCE LAST RESET 0:00:00

NUMBER OF RESETS 0

NUMBER OF WATCHDOG RESETS 0

NUMBER OF GAMES SINCE WATCHDOG RESET 0

NUMBER OF GAMES SINCE PREVIOUS WATCHDOG RESET 0

NUMBER OF DEMOS SINCE LAST GAME 0

NUMBER OF LOST PLAYERS DURING A RACE 0

NUMBER OF LOST LINKS DURING A RACE 0

NUMBER OF RE-LINKS 0

NUMBER FOR OUT OF SYNC GAMES 0

LEFT COIN COUNT 0

RIGHT COIN COUNT 0

FOURTH COIN COUNT 0

BILL COUNT 0

SERVICE CREDITS 0

FREE CREDITS 0

Diagnostic, Audit & Adjustment Menu System 3-13

Operator Menu (continued)

Audits Menu (continued)

Player Audits Menu

PLAYER AUDITS

Select PLAYER AUDITS at the Audits Menu. The Player Audits Menu displays additional information

about player statistics and ability. This information assists you in understanding game use and

profitability. Player Audits is a read-only screen.

PLAYER AUDITS MENU

GAMES PLAYED. Total number of games that players played on this machine.

CONTINUES. Total number of games on this machine that players paid to continue.

FREE GAMES WON remains at zero if you turn off the bonus and award options. Refer to the General

Adjustments Menu for the bonus and award options settings.

STARTS. Number of games that players started.

FREE GAMES %. Proportion of games that were free, expressed as a percentage.

TIME EXPIRES. Number of times that time expired before a player completed the game.

DID NOT FINISH. Number of incomplete games.

FINISHES. Number of completed games.

TWO, THREE AND FOUR-PLAYER RACES remain at zero if no other games are linked to this one.

Diagnostic, Audit & Adjustment Menu System 3-14

Operator Menu (continued)

Audits Menu (continued)

Track Audits Menu

TRACK AUDITS

Select TRACK AUDITS at the Audits Menu. The Track Audits Menu includes specific information about

player choices and ability. This is a read-only menu.

TYPICAL TRACK AUDITS MENU

These audits cover several screen pages. The name of the track appears at the top of the page. Press

the VOLUME UP or VOLUME DOWN buttons to move through these pages.

TRUCK SELECTED WINNER

Hyena 0 0

Outlaw 0 0

General 0 0

Thrasher 0 0

Silver Streak 0 0

Snake Eyes 0 0

Chieftan 0 0

Bad Omen 0 0

Nitro Ninja 0 0

Wilcat 0 0

Dust Devil 0 0

Stinger 0 0

Diagnostic, Audit & Adjustment Menu System 3-15

Operator Menu (continued)

Audits Menu (continued)

Truck Audits Menu

TRUCK AUDITS

Select TRUCK AUDITS at the Audits Menu. The Truck Audits Menu gives you specific information about

player choices and ability. This is a read-only menu.

Menu software includes several pages of audits. The name of the vehicle appears at the top of each

menu page. Press the VOLUME UP or VOLUME DOWN buttons to navigate through these pages.

TYPICAL AUDITS BY TRUCK SCREEN

Diagnostic, Audit & Adjustment Menu System 3-16

Operator Menu (continued)

Adjustments Menu

ADJUSTMENTS MENU

Select ADJUSTMENTS MENU at the Operator Menu. The Adjustments Menu allows you to set game and

player variables. Use these screens to optimize game performance and earnings.

Highlight an option with the middle two diagnostic buttons inside the coin door. Select the option with the

TEST MODE button.

ADJUSTMENTS MENU

GENERAL ADJUSTMENTS MENU

LINKED –PLAY ADJUSTMENTS MENU

TRACK DIFFICULTY ADJUSTMENTS MENU

PRICING MENU

VOLUME ADJUSTMENT

FORCE FEEDBACK ADJUSTMENT

CALIBRATE STEERING, GAS AND BRAKE

SET TIME AND DATE

RETURN TO PREVIOUS MENU

Diagnostic, Audit & Adjustment Menu System 3-17

Operator Menu (continued)

Adjustments Menu (continued)

General Adjustments Menu

GENERAL ADJUSTMENTS MENU

Select GENERAL ADJUSTMENTS MENU at the Adjustments Menu. At the General Adjustments Menu,

you set the cabinet type, game display and measurement system. General Adjustments Menu options

also control the cost and type of play.

Highlight an option with the middle two diagnostic buttons inside the coin door. Press TEST MODE to

enter Change Mode. Use the diagnostic switches to change the variable. Then press TEST MODE to

save changes and exit the variable.

GENERAL ADJUSTMENTS MENU

FREE PLAY determines whether the game accepts money for play, or allows operation without charge.

For free play, turn this option on. For paid play, turn this option off (the factory default).

FREE RACE FOR 1ST permits a free game for players who finish in first place. To award a free race to a

first-place finisher, turn this option on. To eliminate the free race award, turn this option off. The factory

default is on.

FREE RACE FOR 1ST (LINKED). This feature awards a free game to the first place finisher among

human players. The feature only operates when a minimum number of players join in. To award a free

race to a first-place finisher, turn this option on. To eliminate the free race award, turn this option off.

Available settings include 2, 3 or 4 players, or off. The factory default setting is off.

Diagnostic, Audit & Adjustment Menu System 3-18

SHOW MILES PER HOUR sets the measurement system for display on game screens. To display speed

in kilometers per hour, turn SHOW MILES PER HOUR off. To display speed in miles per hour, turn

SHOW MILES PER HOUR on (the factory default).

ADULT MODE. When you enable Adult Mode, the glamorous cheerleaders appear in bikinis. When you

disable Adult Mode, the cheerleaders appear in more conservative attire. The default setting is on.

Diagnostic, Audit & Adjustment Menu System 3-19

Operator Menu (continued)

Adjustments Menu (continued)

Linked-Play Adjustments Menu

LINKED PLAY ADJUSTMENTS MENU

Select LINKED PLAY ADJUSTMENTS MENU at the Adjustments Menu. The Linked Play Adjustments

Menu allows you to set the game cabinet network identity. After you cable the linked cabinets, use this

menu to set up linked play.

Highlight an option with the middle two diagnostic buttons inside the coin door. Press TEST MODE to

enter Change Mode. Use the diagnostic switches to change the variable. Then press TEST MODE to

save changes and exit the variable.

LINKED-PLAY ADJUSTMENTS MENU

Before proceeding, bring up the Linked Play Adjustments Menu on all linked cabinets.

LINKED PLAY. After you link a cabinet to other games, turn on LINKED PLAY. Now game electronics

can communicate with other cabinets. To prohibit linked play, turn off the feature. The factory default is

off.

UNIT ID determines the game’s address. Each linked game must have a unique number. Never use the

same address for two cabinets. Sequence isn’t important. The factory default ID is 1.

REINITIALIZE. After selecting the ID, exit the Menu System. Shut down each linked cabinet for one

minute. (Leave the computers switched on.) Then restore power to all cabinets. The cabinets should

initialize in Linked Mode. Verify linked operation by playing some linked games.

FREE PLAY

LINKED PLAY ENABLED

UNIT ID (1-4): 1

Diagnostic, Audit & Adjustment Menu System 3-20

Operator Menu (continued)

Adjustments Menu (continued)

Track Difficulty Adjustments Menu

TRACK DIFFICULTY ADJUSTMENTS MENU

Select TRACK DIFFICULTY ADJUSTMENTS MENU at the Adjustments Menu. From the Track Difficulty

Adjustments Menu, you set how much skill players need to complete races.

Highlight an option with the middle two diagnostic buttons inside the coin door. Press TEST MODE to

enter Change Mode. Use the diagnostic switches to change the variable. Then press TEST MODE to

save changes and exit the variable.

TRACK DIFFICULTY ADJUSTMENTS MENU

LIMIT FREE RACES TO (LFRT) is the award cutoff point. LFRT prevents expert players from

monopolizing a cabinet. The range is 1 to 100%. The factory default is 10%.

BONUS START TIME. You can use this feature to award several seconds of extra time to starting

players. The factory default is zero seconds.

BONUS CHECKPOINT TIME. Use this feature to award several seconds of extra time as players pass

checkpoints. The factory default is zero seconds.

ADJUST TRACK DIFFICULTIES MENU allows you to modify the level of challenge that each track

poses.

Diagnostic, Audit & Adjustment Menu System 3-21

Operator Menu (continued)

Adjustments Menu (continued)

Track Difficulty Adjustments Menu (continued)

Adjust Track Difficulties Menu

ADJUST TRACK DIFFICULTIES MENU

Select ADJUST TRACK DIFFICULTIES MENU at the Track Difficulty Adjustments Menu. From the Adjust

Track Difficulties Menu, you modify the level of challenge that each track poses. You can also increase or

reduce starting and checkpoint bonus time. Difficulty and bonus default values are all zero.

Highlight an option with the middle two diagnostic buttons inside the coin door. Press TEST MODE to

enter Change Mode. Use the diagnostic switches to change the variable. Press TEST MODE to save

changes and exit the variable. Or press TEST CREDITS to cancel changes and exit the variable.

You’ll notice that each option line has three columns of figures to change. The program lets you edit each

column in turn. First you modify BASE DIFFICULTY, then START BONUS, and last, CHECKPOINT

BONUS.

ADJUST TRACK DIFFICULTIES MENU

Tunnel Vision 0 0 0

Over ‘N’ Under 0 0 0

Air Time 0 0 0

High Octane 0 0 0

Carnie of Chaos 0 0 0

Cliffhanger 0 0 0

Double Barrel 0 0 0

Alpine Air 0 0 0

Tunnel Vision Mirror 0 0 0

Over ‘N’ Under Mirror 0 0 0

Airtime Mirror 0 0 0

High Octane Mirror 0 0 0

Carnie of Chaos Mirror 0 0 0

Cliffhanger Mirror 0 0 0

Double Barrel Mirror 0 0 0

Alpine Air Mirror 0 0 0

Diagnostic, Audit & Adjustment Menu System 3-22

Operator Menu (continued)

Adjustments Menu (continued)

Pricing Menu

PRICING MENU

Select PRICING MENU at the Adjustments Menu. The Pricing Menu contains options for selecting

standard and custom currency combinations. The factory default is USA1.

Highlight an option with the middle two diagnostic buttons inside the coin door. Press TEST MODE to

enter Change Mode. Use the diagnostic switches to change the variable. Then press TEST MODE to

save changes and exit the variable. Turning on Free Play disables Pricing Menu settings.

PRICING MENU

SELECT CUSTOM PRICING allows you to set coin and credit options manually. Use this option to create

your own pricing schemes. This menu permits changes to default values.

SELECT STANDARD PRICING allows you to select from several ready-made price schemes This menu

permits changes to default values.

RESET TO DEFAULTS returns the price settings to factory default values. This menu permits changing

all current values at once.

Diagnostic, Audit & Adjustment Menu System 3-23

Operator Menu (continued)

Adjustments Menu (continued)

Pricing Menu (continued)

Select Custom Pricing Menu

SELECT CUSTOM PRICING MENU

Choose SELECT CUSTOM PRICING at the Pricing Menu. The Select Custom Pricing Menu permits you

to program and use your own pricing table. You can save several pricing schemes and chose between

them as desired.

Highlight an option with the middle two diagnostic buttons inside the coin door. Press TEST MODE to

enter Change Mode. Use the diagnostic switches to change the variable. Then press TEST MODE to

save changes and exit the variable.

TYPICAL SELECT CUSTOM PRICING MENU

The Custom Pricing Menu employs the same terms that appear on the Current Pricing Table. See the

table below for definitions of these terms.

Diagnostic, Audit & Adjustment Menu System 3-24

PRICING MENU TERMS

SCREEN TERM DISCUSSION

Slot Units;

Bill Validator (DBV)

Units

Cyber-currency. This adjustment assigns a number of “units” to each coin mechanism

or bill acceptor. For instance, if a quarter buys 1 unit, then $1 buys 4 units. (See Coins

per Bill.) You insert a coin into a 1-unit coin acceptor. The system, due to its

programming, knows that your coin is worth one unit.

Units per Credit How many units equal one credit. (Units buy credit, the price of one game.)

Units per Bonus Units awarded when a player earns a bonus.

Minimum Units Until this many units accumulate, the system awards no credits.

Credits to Start Number of games a player must purchase to begin play.

Credits to Continue Number of games a player must purchase to resume play.

Max Credits Limits the number of credits that the game will accept.

Coins per Bill How many coins one bill is worth.

BASIC CUSTOM PRICING. Custom pricing creates an imaginary currency exchange. In this currency

exchange, the coins of the realm are “units.” Think of units as a type of cyber-currency, useful only within

the game software. By inserting coins, you purchase units.

Since units are only negotiable within game software, the system stores your units for you. When the

system receives enough units, it buys a game for you. The price of a game is one “credit.” You can think

of credits as a second form of cyber-currency.

Even though you’ve now bought one game, you may not be able to begin playing. In many pricing

schemes, you must buy two or more credits to begin play. The idea here is something like a minimum

order of goods at a store. That is, the operator can “shrink-wrap” two or more games in a package. You

can’t play unless you buy the entire package.

•

••

•1 / 25¢ COIN; 1 CREDIT TO START. In a simple, quarter pricing scheme, the player inserts one coin to buy

one unit. The system exchanges that unit for one credit. If CREDITS TO START contains the value one,

then play commences. A dollar bill buys four units.

Left Slot Units Validator Units Units / Credit Credits to Start Coins / Bill

14114

•

••

•1 / 3 X 25¢; 2 CREDITS TO START. Again, assuming quarter slots, here’s one way to implement 75¢

pricing… In this scheme, each coin that the player inserts buys one unit. The system exchanges three

units for one credit. CREDITS TO START contains the value two. To play, the player must pay for two

credits. In this scheme, a dollar buys four units.

Left Slot Units Validator Units Units / Credit Credits to Start Coins / Bill

14324

•

••

•2 / 1 COIN; 6 CREDITS TO START. Now let’s consider a more unusual pricing scheme. Here, the player

can buy two units with one coin. The system exchanges each of these units for one credit. Notice that

CREDITS TO START contains the value six. To play, the player must insert two more coins to pay for six

credits. Also notice that if the player pays with a bill, the system throws in an extra unit.

Left Slot Units Validator Units Units / Credit Credits to Start Coins / Bill

29164

Diagnostic, Audit & Adjustment Menu System 3-25

Operator Menu (continued)

Adjustments Menu (continued)

Pricing Menu (continued)

Select Standard Pricing Continent Menu

SELECT STANDARD PRICING CONTINENT MENU

Choose SELECT STANDARD PRICING at the Pricing Menu. The Select Standard Pricing Continent

Menu allows you to choose the continent that you are operating in.

Highlight a line item with the middle two diagnostic buttons inside the coin door. Select the option with the

TEST MODE button.

STANDARD PRICING MENU

Diagnostic, Audit & Adjustment Menu System 3-26

Operator Menu (continued)

Adjustments Menu (continued)

Pricing Menu (continued)

Select Standard Pricing Continent Menu

Select Standard Pricing Country for North America Menu

SELECT STANDARD PRICING COUNTRY FOR NORTH AMERICA MENU

Choose a continent (NORTH AMERICA, for example) at the Select Standard Pricing Continent Menu.

The Select Standard Pricing Country for North America Menu contains options for selecting standard

currency combinations. You may use standard pricing schemes as-is, or customize them.

Highlight a line item with the middle two diagnostic buttons inside the coin door. Select the option with the

TEST MODE button.

TYPICAL SELECT STANDARD PRICING FOR NORTH AMERICA MENU

Diagnostic, Audit & Adjustment Menu System 3-27

Operator Menu (continued)

Adjustments Menu (continued)

Pricing Menu (continued)

Select Standard Pricing Continent Menu (continued)

Select Standard Pricing Country for North America Menu (cont’d)

Select Standard Pricing Table for USA Menu (cont’d)

SELECT STANDARD PRICING MENU

Suppose that you want to set U.S. pricing. Choose USA at the menu entitled Select Standard Pricing

Country for North America. This menu contains options for selecting standard U.S. currency

combinations.

Highlight an option with the middle two diagnostic buttons inside the coin door. Press TEST MODE to

enter Change Mode. Use the diagnostic switches to change the variable. Then press TEST MODE to

save changes and exit the variable.

TYPICAL VIEW CURRENT PRICING DISPLAY

Diagnostic, Audit & Adjustment Menu System 3-28

STANDARD PRICING TABLE

NAME

START

CONTINUE

CREDITS/COIN

COIN 1

COIN 2

COIN 3

COIN4

BILL

ANTILLES 2 2 1/25¢, 4/1G .25¢ 1G

AUSTRALIA 1 2 2 1/3X20¢, 2/$1.00 .20¢ $1.00

AUSTRALIA 2 2 2 1/5X20¢, 1/$1.00 .20¢ $1.00

AUSTRIA 1 2 2 1/5Sch, 2/10Sch 5 Sch 10 Sch

AUSTRIA 2 2 2 1/2X5Sch, 3/2X10Sch 5 Sch 10 Sch

BELGIUM 1 2 2 1/20BF 20BF 20BF

BELGIUM 2 2 2 3/20BF 20BF 20BF

BELGIUM 3 2 2 2/20BF 20BF 20BF

BELGIUM ECA 2 2 1/20BF 50BF 20BF 5BF

CANADA 1 2 2 1 / 2 x 25¢, 3 / $1 25¢ 25¢

CANADA 2 2 2 1 / 2 x 25¢, 3 / $1 25¢ $1.00

CANADA 3 2 2 3 / $1.00, 6 / $2.00 $1.00 $2.00

CANADA ECA 2 2 1 / 2 x 25¢, 3 / $1 25¢ $1.00 $2.00

DENMARK 2 2 3/5DKr, 7/10DKr 5DKr 10DKr

FINLAND 2 2 1/1Fmk 1Fmk 5Fmk

FRANCE 1 2 2 2/5Fr, 5/10Fr 5Fr 10Fr

FRANCE 2 2 1 2/5Fr, 4/10Fr 5Fr 10Fr

FRANCE 3 2 1 1/5Fr, 3/10Fr 5Fr 10Fr

FRANCE 4 2 1 1/5Fr, 2/10Fr 5Fr 10Fr

FRANCE 5 2 1 2/5Fr, 5/10Fr, 11/2 X 10Fr 5Fr 10Fr

FRANCE 6 2 1 2/5Fr, 4/10Fr, 9/2 X 10Fr 5Fr 10Fr

FRANCE 7 2 1 1/5Fr, 3/10Fr, 7/2 X 10Fr 5Fr 10Fr

FRANCE 8 2 1 1/5Fr, 2/10Fr, 5/2 X 10Fr 5Fr 10Fr

FRANCE 9 2 1 1/3 X 1Fr, 2/5Fr 1Fr 5Fr

FRANCE 10 2 1 1/2 X 1Fr, 3/5Fr 1Fr 5Fr

FRANCE 11 2 1 1/3 X 1Fr, 2/5Fr, 5/2 X 5Fr 1Fr 5Fr

FRANCE 12 2 1 1/2 X 1Fr, 3/5Fr, 7/2 X 5Fr 1Fr 5Fr

FRANCE ECA 1 1 1 2/5Fr, 5/10Fr 1Fr 5Fr 10Fr 20Fr

FRANCE ECA 2 1 1 2/5Fr, 4/10Fr 1Fr 5Fr 10Fr 20Fr

FRANCE ECA 3 1 1 1/5Fr, 3/10Fr 1Fr 5Fr 10Fr 20Fr

FRANCE ECA 4 1 1 1/5Fr, 2/10Fr 1Fr 5Fr 10Fr 20Fr

FRANCE ECA 5 1 1 2/5Fr, 5/10Fr, 11/2 X 10Fr 1Fr 5Fr 10Fr 20Fr

FRANCE ECA 6 1 1 2/5Fr, 4/10Fr, 9/2 X 10Fr 1Fr 5Fr 10Fr 20Fr

FRANCE ECA 7 1 1 1/5Fr, 3/10Fr, 7/2 X 10Fr 1Fr 5Fr 10Fr 20Fr

FRANCE ECA 8 1 1 1/5Fr, 2/10Fr, 5/2 X 10Fr 1Fr 5Fr 10Fr 20Fr

FRANCE ECA 9 1 1 1/3 X 1Fr, 2/5Fr 1Fr 5Fr 10Fr 20Fr

FRANCE ECA 10 1 1 1/2 X 1Fr, 3/5Fr 1Fr 5Fr 10Fr 20Fr

FRANCE ECA 11 1 1 1/3 X 1Fr, 2/5Fr, 5/10Fr 1Fr 5Fr 10Fr 20Fr

FRANCE ECA 12 1 1 1/2 X 1Fr, 3/5Fr, 7/10Fr 1Fr 5Fr 10Fr 20Fr

FRANCE ECA 13 1 1 1/10Fr, 2/20Fr, 4/30Fr 1Fr 5Fr 10Fr 20Fr

FREE PLAY -- -- -- None None None None None

GERMANY 1 2 2 1/1DM, 6/5DM 1DM 5DM

GERMANY 2 2 1 1/1DM, 7/5DM 1DM 5DM

GERMANY 3 2 1 1/1DM, 8/5DM 1DM 5DM

GERMANY 4 2 1 1/1DM, 5/5DM 1DM 5DM

GERMANY 5 2 1 1/1DM, 6/5DM 1DM 5DM

GERMANY ECA 1 2 2 1/1DM, 2/2DM, 6/5DM 1DM 2DM 5DM

GERMANY ECA 2 2 1 1/1DM, 2/2DM, 6/5DM 1DM 2DM 5DM

GERMANY ECA 3 1 1 1/1DM, 2/2DM, 6/5DM 1DM 2DM 5DM

HUNGARY 2 2 1/2X10Ft, 3/2X20Ft 10Ft 20Ft

ITALY 2 2 1/500LIt 500LIt 500LIt

JAPAN 1 2 2 1/100Yen 100 100

JAPAN 2 2 2 2/100Yen 100 100

NETHERLANDS 2 2 1/1HFI, 3/2.5HFI 1HFI 2.5HFI

NEW ZEALAND 1 1 1 1/$1 $1 $2

NEW ZEALAND 2 1 1 2/$1 $1 $2

NORWAY 2 2 3/5NKr, 6/10NKr 5NKr 10NKr

SPAIN 1 2 2 1/100Pta, 6/500Pta 100Pta 500Pta

SPAIN 2 2 2 1/100Pta, 5/500Pta 100Pta 500Pta

SWEDEN 2 2 1/3X1SKr, 2/5SKr 1SKr 5SKr

SWITZERLAND 1 2 2 1/1SFr, 6/5SFr 1SFr 5SFr

SWITZERLAND 2 2 2 1/1SFr, 7/5SFr 1SFr 5SFr

SWITZERLAND 3 2 2 1/1SFr, 8/5SFr 1SFr 5SFr

(Table continues on next page)

Diagnostic, Audit & Adjustment Menu System 3-29

STANDARD PRICING TABLE, continued

NAME

START

CONTINUE

CREDITS/COIN

COIN 1

COIN 2

COIN 3

COIN4

BILL

UK ECA 1 1 1 1/50p, 3/£1.00 £1.00 50p 20p 10p £2.00

UK ECA 2 1 1 1/50p, 2/£1.00 £1.00 50p 20p 10p £2.00

UK ECA 3 1 1 1/30p, 2/50p, 5/£1.00 £1.00 50p 20p 10p £2.00

UK 4 1 1 1/50p, 3/£1.00 £1.00 50p

UK 5 1 1 1/50p, 2/£1.00 £1.00 50p

UK ECA 6 1 1 1/30p, 2/50p, 4/£1.00 £1.00 50p 20p 10p £2.00

UK ECA 7 1 1 3/£1.00 £1.00 50p 20p 10p £2.00

UK ECA 8 1 1 1/50p, 2/£1.00, 4/£2.00 £1.00 50p 20p 10p £2.00

USA1 2 2 1/25¢ 25¢ 25¢ $1.00

USA2 2 1 1/25¢ 25¢ 25¢ $1.00

USA3 1 1 1/25¢ 25¢ 25¢ $1.00

USA4 1 1 1/50¢, 3/$1.00 25¢ 25¢ $1.00

USA5 2 1 1/50¢, 4/$1.00 25¢ 25¢ $1.00

USA6 1 1 1/50¢ 25¢ 25¢ $1.00

USA7 1 1 1/50¢, 3/$1.00 25¢ 25¢ $1.00

USA8 2 2 1/50¢, 4/$1.00 25¢ 25¢ $1.00

USA9 3 2 1/25¢, 4/$1.00 25¢ 25¢ $1.00

USA10 3 3 1/25¢, 4/$1.00 25¢ 25¢ $1.00

USA11 4 2 1/25¢, 4/$1.00 25¢ 25¢ $1.00

USA12 4 3 1/25¢, 4/$1.00 25¢ 25¢ $1.00

USA13 4 4 1/25¢, 4/$1.00 25¢ 25¢ $1.00

USA ECA 3 3 1/25¢, 4/$1.00 $1.00 25¢ 10¢ 05¢ $1.00

Diagnostic, Audit & Adjustment Menu System 3-30

Operator Menu (continued)

Adjustments Menu (continued)

Volume Adjustment Menu

VOLUME ADJUSTMENT MENU

Select VOLUME ADJUSTMENT at the Adjustments Menu. (You can also access this menu from the

Operator Menu.) The Volume Adjustment Menu allows you to adjust relative sound volume levels.

Highlight an option with the middle two diagnostic buttons inside the coin door. Press TEST MODE to

enter Change Mode. Use the diagnostic switches to change the variable. Then press TEST MODE to

save changes and exit the variable.

VOLUME ADJUSTMENT MENU

NOTICE: The Master Volume setting affects all other volume adjustments. You can still

alter Attract sounds in relation to normal game sound. For example, suppose that you

set Attract Mode volume to 50%. Then Attract Mode sounds are half as loud as normal

game sounds.

NOTICE: Check the Master Volume setting before testing. Increase Master Volume to

fully test speakers. Restore Master Volume to its previous level before returning to

Game-Over Mode.

Diagnostic, Audit & Adjustment Menu System 3-31

MASTER VOLUME sets the overall volume level during game play. This value simultaneously affects all

other sound settings. The range is 1 to 100%. The factory default is 60%.

ATTRACT VOLUME adjusts the Attract Mode sound level only when you turn on Attract Mode. The

Attract Mode sound level is independent of game audio levels. The Attract Volume range is 1 to 100%.

The factory default is 50%.

MINIMUM VOLUME sets the quietest sound level during game play. The range is 1 to 100%. The factory

default is 20%.

To exit the Volume Adjustment Menu, highlight RETURN TO PREVIOUS MENU. Then press TEST

MODE.

Diagnostic, Audit & Adjustment Menu System 3-32

Operator Menu (continued)

Adjustments Menu (continued)

Force Feedback Adjustment Menu

FORCE FEEDBACK ADJUSTMENT

Select FORCE FEEDBACK ADJUSTMENT MENU at the Adjustments Menu. The Force Feedback

Adjustment Menu allows you to alter the intensity of steering wheel feedback.

Highlight an option with the middle two diagnostic buttons inside the coin door. Press TEST MODE to

enter Change Mode. Use the diagnostic switches to change the variable. Then press TEST MODE to

save changes and exit the variable.

FORCE FEEDBACK ADJUSTMENT MENU

THE INTENSITY ADJUSTMENT ranges from 0% (minimum) to 100% (maximum). The factory default

setting is 60%. If players have superior upper body strength, apply greater force. Younger players may be

more comfortable with smaller force settings.

THE FORCE FEEDBACK CENTER TEST checks operation of steering wheel motor drive circuits. Select

this option and move the steering wheel to any position. As soon as you release the wheel, it must

automatically return to its center position. If it doesn’t, then the vehicle won’t respond properly.

Diagnostic, Audit & Adjustment Menu System 3-33

Operator Menu (continued)

Adjustments Menu (continued)

Calibrate Steering, Gas and Brake Menu

CALIBRATE STEERING, GAS AND BRAKE

Select CALIBRATE STEERING, GAS AND BRAKE at the Adjustments Menu. (You can also access this

menu from the Operator Menu.) This option allows you to set steering and throttle mechanisms for

optimum control during game play. Poorly calibrated player controls can reduce profits.

NOTICE: Before calibrating player control switches, make needed repairs to the game.

If you plan to move the game, move it before calibrating player control switches.

To set up each calibration procedure, follow screen directions. Press TEST MODE to begin the

procedure.

STEERING, GAS AND BRAKE CALIBRATION SCREEN

The steering wheel, brake and gas pedal couple to potentiometers. These potentiometers output DC

voltages between zero and five volts. Game electronics digitize this analog output into an eight-bit (256-

value), numeric stream.

Watch the numbers on the calibration screen. These numbers vary to indicate a control’s position within

that control’s range of motion. For instance, steering straight ahead produces a number halfway between

the left and right steering limits. To accurately simulate steering, numbers must change sequentially.

Diagnostic, Audit & Adjustment Menu System 3-34

Operator Menu (continued)

Adjustments Menu (continued)

Set Time and Date Menu

SET THE TIME AND DATE

Select SET TIME AND DATE at the Adjustments Menu. The Set Time and Date Menu provides the

current date and time for the game. This screen also allows clock adjustments for time zone changes and

seasonal time changes.

Highlight an option with the middle two diagnostic buttons inside the coin door. Press TEST MODE to

enter Change Mode. Use the diagnostic switches to change the variable. Then press TEST MODE to

save changes and exit the variable.

SET TIME AND DATE MENU

The clock assists in providing accurate game statistics. It doesn’t affect game operation. When the circuit

board isn’t receiving external power, the clock runs until the battery fails.

Diagnostic, Audit & Adjustment Menu System 3-35

Operator Menu (continued)

Utilities Menu

UTILITIES MENU

Select UTILITIES MENU at the Operator Menu. The Game Utilities Menu permits you to clear game

credits, player statistics, and game audits. Here, you restore game settings to factory defaults or save

audit data. A confirmation screen appears before you finalize changes.

Highlight an option with the middle two diagnostic buttons inside the coin door. Press TEST MODE to

enter Change Mode. Use the diagnostic switches to change the variable. Then press TEST MODE to

save changes and exit the variable.

UTILITIES MENU

CLEAR CREDITS zeros all credit variables.

RESET OPERATOR SETTINGS returns Adjustments Menu variables to factory default values.

RESET HIGH SCORES AND SPLIT TIMES overwrites the player high scores with factory default data.

RESET AUDIT STATS zeros track and truck audit values.

FULL FACTORY RESTORE resets all variables above to factory default values. A confirmation screen

appears before you finalize changes.

CLEAR CREDITS

RESET OPERATOR SETTINGS

RESET HIGH SCORES AND SPLIT TIMES

RESET AUDIT STATS

FULL FACTORY RESTORE

SAVE AUDITS TO FLOPPY DISK

RETURN TO PREVIOUS MENU

Diagnostic, Audit & Adjustment Menu System 3-36

SAVE AUDITS TO FLOPPY DISK allows you to copy game data to a disk. Comparing audit data over

time demonstrates the effect of game variable changes on profits. Use a formatted, 1.44MB high-density

diskette. The floppy drive is in the CPU cabinet.

NOTICE: Be careful when clearing audit information. Once you clear data, you can’t

restore it. Use the Save Audits to Floppy Disk option to save data for analysis. To clear

audit registers, use the Reset or Full Factory Restore functions.

A CONFIRMATION SCREEN APPEARS BEFORE YOU FINALIZE CHANGES

Diagnostic, Audit & Adjustment Menu System 3-37

Operator Menu (continued)

Volume Adjustment Menu

VOLUME ADJUSTMENT MENU

Select VOLUME ADJUSTMENT at the Operator Menu. (You can also access this menu from the

Adjustments Menu.) The Volume Adjustment Menu allows you to adjust relative sound loudness levels.

Highlight an option with the middle two diagnostic buttons inside the coin door. Press TEST MODE to

enter Change Mode. Use the diagnostic switches to change the variable. Then press TEST MODE to

save changes and exit the variable.

VOLUME ADJUSTMENT MENU

NOTICE: The Master Volume setting affects all other volume adjustments. You can still

alter Attract sounds in relation to normal game sound. For example, suppose that you

set Attract Mode volume to 50%. Then Attract Mode sounds are half as loud as normal

game sounds.

NOTICE: Check the Master Volume setting before testing. Increase Master Volume to

fully test speakers. Restore Master Volume to its previous level before returning to

Game-Over Mode.

MASTER VOLUME sets the overall volume level during game play. This value simultaneously affects all

other sound settings. The range is 1 to 100%. The factory default is 60%.

Diagnostic, Audit & Adjustment Menu System 3-38

ATTRACT VOLUME adjusts the Attract Mode sound level only when you turn on Attract Mode. The

Attract Mode sound level is independent of game audio levels. The Attract Volume range is 1 to 100%.

The factory default is 50%.

MINIMUM VOLUME sets the quietest sound level during game play. The range is 1 to 100%. The factory

default is 20%.

To exit the Volume Adjustment Menu, highlight RETURN TO PREVIOUS MENU. Then press TEST

MODE.

Diagnostic, Audit & Adjustment Menu System 3-39

Operator Menu (continued)

Calibrate Steering, Gas and Brake Menu

CALIBRATE STEERING, GAS AND BRAKE

Select CALIBRATE STEERING, GAS AND BRAKE at the Operator Menu. (You can also access this

menu from the Adjustments Menu.) This option allows you to set steering and throttle mechanisms for

optimum control during game play. Poorly calibrated player controls can reduce profits.

NOTICE: Before calibrating player control switches, make needed repairs to the game.

If you plan to move the game, move it before calibrating player control switches.

To set up each calibration procedure, follow screen directions. Press TEST MODE to begin the

procedure.

STEERING, GAS AND BRAKE CALIBRATION SCREEN

The steering wheel, brake and gas pedal couple to potentiometers. These potentiometers output DC

voltages between zero and five volts. Game electronics digitize this analog output into an eight-bit (256-

value), numeric stream.

Watch the numbers on the calibration screen. These numbers vary to indicate a control’s position within

that control’s range of motion. For instance, steering straight ahead produces a number halfway between

the left and right steering limits. To accurately simulate steering, numbers must change sequentially.

Diagnostic, Audit & Adjustment Menu System 3-40

NOTES

Wiring & Circuit Information 4-1

OFFROAD

FFROADFFROAD

FFROAD

THUNDER

THUNDERTHUNDER

THUNDER

CHAPTER

WIRING & CIRCUIT

INFORMATION

WARNING: Failure to reconnect ground wires or replace metal shields may result in

radio frequency interference.

NOTICE: The term VGM refers to the video game machine.

Wiring & Circuit Information 4-2

Harness Connector Prefixes

Prefix Connector Location Example

1 Arcade Computer 1P1

2-- --

3 Magic Bus Interface Board 3P1

4 Fluorescent Lamp 4P1

5 Power Supply 5P1

6 Video Monitor 6P1

7 Wheel Driver Board 7P1

8 Coin Door Area 8P1

9 BB12 Audio Board 9P1

10 LED Interconnect Board 10P1

11 Cabinet 11P1

12 Optional Overhead Marquee 12P1

13 Dashboard 13P1

14 Gas Pedal & Brake 14P1

15 Upper Speakers 15P1

16 Seat Speaker 16P1

17 Dash LED Board 17P1

18 Subwoofer Driver Board 18P1

NOTICE: Look for the connector prefix on wiring diagrams. The prefix shows you

where you’ll find the connector.

Wiring & Circuit Information 4-3

Power Wiring Diagram

Wiring & Circuit Information 4-4

Cabinet Wiring Diagram

Wiring & Circuit Information 4-5

Player Panel Wiring Diagram

Wiring & Circuit Information 4-6

Computer Motherboard Assembly 20-10554

MOTHERBOARD CONNECTOR AND JUMPER STATUS

(NOTES FOR TABLE ON FOLLOWING PAGE)

NOTICE: The term VGM refers to the video game machine.

NOTES:

1. VGM doesn’t require jumper or telephone connection.

2. VGM doesn’t require jumper. VGM uses proprietary network for game linking.

3. VGM doesn’t require connections. VGM has no ATAPI devices (CD ROMs).

4. VGM doesn’t require jumper. Tamper-detection security feature isn’t installed.

5. Connect processor module fan to this jack. Computer may become unreliable if processor overheats.

6. Connect processor module to this jack. 242-pin socket accepts single microprocessor modules.

7. VGM doesn’t require connections. Case cooling fans connect directly to power supply.

8. VGM doesn’t require connections. VGM doesn’t use SCSI devices (Hard Drives).

9. Connect reset cable from Filter Board to this jack. VGM doesn’t use front-panel devices.

10. Jumper must be set over pins 1 & 2 for this VGM. VGM won’t run with incorrect or missing jumper.

* Replacement Motherboards may not include this jumper. Refer to Parts to order extra shunt jumpers.

Wiring & Circuit Information 4-7

Motherboard Connector and Jumper Status Table

Designation Location Function Meaning Setting Default

J1A1 Lower Right Wake Not Used In This Open 

Near Board On VGM (No 1 & 2

(Note 1) Expansion Slot Ring Telephone)

J1E1 Lower Center Wake Not Used In This Open 

Near Board On VGM (No

(Note 2) Expansion Slot LAN PC LAN)

J1F2 Lower Center CD Audio Not Used In This Open 

Near Board Input VGM (No

(Note 3) Expansion Slot Circuit CD Player)

J2F1 Lower Center CD Data Not Used In This Open 

Near Board Input VGM (No

(Note 3) Expansion Slot Circuit CD Player)

J2F2 Lower Center Telephony Not Used In This Open 

Near Board Input VGM (No

(Note 1) Expansion Slot Circuit Telephone)

J2F3 Lower Center Auxiliary Not Used In This Open 

Near Board Input VGM (No

(Note 3) Expansion Slot Circuit Aux Devices)

J3F1 Middle Center Chassis Not Used In This Open 

Near CPU Intrusion VGM (No 1 & 2

(Note 4) And Fan Circuit Intrusion)

J3F2 Middle Center Processor Two Speed Fan Open

Near CPU Fan For Processor 1, 2, & 3 

(Note 5) And Fan Circuit Cooling

J4J1 Center Left System System Open

Module With Micro- Micro- Filled 

(Note 6) Fan Assembly Processor Processor

J4M1 Center Left Processor Controlled Fan Open 

Near CPU Fan For Processor 1, 2, & 3

(Note 7) Module Circuit Cooling

J7M1 Upper Left Case Controlled Fan Open 

Near Power & Fan For Hard Disk 1, 2, & 3

(Note 7) Floppy Jacks Circuit Drive Cooling

J8J1 Upper Left SCSI Not Used In This Open 

Between Hard Drive VGM (No 1 & 2

(Note 8) & Floppy Jacks Indicator SCSI Drives)

J8FR Upper Center Front Only Reset Open

Near Hard Disk Panel Pins Are Used 1 & 2 

(Note 9) Drive Jacks Devices In This VGM

J8A1 Upper Right Configur- Starts System Open

Near Battery ation Setup Routine 1 & 2 

(Note 10) And Speaker Select or Operation 2 & 3

Wiring & Circuit Information 4-8

Network Interface Board Assembly 20-10550

Network Interface LED Indicator Table

Designation Location Function Color State Meaning

LED 1

(LNK) Left Center

Under Jack Link Verify

Indicator Green Off Not In Use

(No Game Link)

On Normal

Operation

Blinking Link Fault

(Note 1)

LED 2

(ACT) Right Center

Under Jack Activity

Indicator Green Off Not In Use

(No Data)

On Receiving Data

(Note 2)

Blinking Normal

Operation

Notes:

1. Intermittent cable or hub problems may cause blinking. Blinking must be continuous during linked

operation.

2. Blinks during data packet exchange. Blinking may appear continuous during heavy network activity.

Wiring & Circuit Information 4-9

Video Graphics Board Assembly 20-10551

Video Graphics Connector And Jumper Table

Designation Location Function Meaning Setting Default

J1 Left Center Video Graphic Open

(DB-15 on Signal Information 1-15 

(Note 1) Bracket) Output To Interface

J2-J7 None --- Not Used Open 

(Note 2)

JP2 None --- Not Used Open 

(Note 2)

Notes:

1. Connects to Interface Board through shielded cable. Doesn’t connect directly to monitor.

2. Manufacturer option connectors and jumpers. Not required for this VGM.

Wiring & Circuit Information 4-10

Audio Amplifier Board Assembly 04-12529.1

BB12 Audio Amplifier LED Indicator Table

Designation Location Function Color State Meaning

LED 1

(CR1) Upper Center

Near C3 Fault

Indicator Red Off Normal

Operation

On Locked Up

(Note 1)

Blinking Overload

(Note 2)

LED 2

(CR2) Lower Center

Near U2 & U6 Fault

Indicator Red Off Normal

Operation

On Locked Up

(Note 1)

Blinking Overload

(Note 2)

NOTES:

1. Active output protection circuit. Attempt to reset circuit by clearing fault and removing power.

2. Intermittent audio overload or overheating may cause blinking. LED should flash only during startup.

Wiring & Circuit Information 4-11

Audio Amplifier Board Schematic, 1/4

Wiring & Circuit Information 4-12

Audio Amplifier Board Schematic, 2/4

Wiring & Circuit Information 4-13

Audio Amplifier Board Schematic, 3/4

Wiring & Circuit Information 4-14

Audio Amplifier Board Schematic, 4/4

Wiring & Circuit Information 4-15

MagicBus



 Interface Board Assembly 04-12697.3

MagicBus



 Interface Board Switches

Designation Location Function Positions State Meaning

S1-7 Right Center Near

D19 – D26 USB / UART

Mode Selector 2 Off* UART Mode

(Offroad VGMs)

On USB Mode

S1-8 Right Center Near

D19 – D26 Host Watchdog

Reset 2 Off* Watchdog

Enabled

On Watchdog

Disabled

Notes:

1. Bank 1, Switch 7 should be off for Offroad Thunder. This switch selects USB or UART mode. USB

mode is for factory testing only, and is not supported. Leave this switch in the off position.

2. Bank 1, switches 1 through 6 have no assigned function. Leave these switches off.

3. Bank 2, switch 1 through 8 have no assigned function. Leave these switches off.

Wiring & Circuit Information 4-16

MagicBus



 Board LED Indicator Table, 1/2

LED # Location Function Color State Meaning

LED 28 Left Center, Near

Fuse F2 & Off No +12V

+12V Power

for Output Connector JP12 Indicator Red On +12V Present

Lamps Blinking Intermittent +12V

LED 27 Off No +5V

+5V Power for

Analog Right, Near DIP

Fuse F1 Indicator Red On +5V Present

Inputs Blinking Intermittent +5V

LED 10 Off Not In Use

Communi-

cation Right Center, Near

DIP Switch S1 Indicator Red On Communication

Error

Blinking Normal Operation

LED 9 Off Not In Use

EEPROM Right Center, Near

DIP Switch S1 Indicator Red On EEPROM not

responding

Blinking Normal Operation

LED 8 Off Not In Use

Security Right Center, Near

DIP Switch S1 Indicator Red On Security error

Blinking Normal Operation

LED 7 Off Not In Use

MagicBus

Reset Right Center, Near

DIP Switch S1 Indicator Red On MagicBus Reset

Blinking Normal Operation

LED 6 Off Faulty MagicBus

Board

MagicBus

Program Right Center, Near

DIP Switch S1 Indicator Green On Faulty MagicBus

Board

Running Blinking Normal Operation

LED 5 Off Not In Use

UART / USB

Mode Right Center, Near

DIP Switch S1 Indicator Green On Faulty MagicBus

Board

Blinking With 4 & 3: UART;

Individually: USB

Wiring & Circuit Information 4-17

MagicBus



 Board LED Indicator Table, 2/2

LED 4 Off Not In Use

UART / USB

Mode Right Center, Near

DIP Switch S1 Indicator Green On Faulty MagicBus

Board

Blinking With 5 & 3: UART;

Individually: USB

LED 3 Off Not In Use

UART / USB

Mode Right Center, Near

DIP Switch S1 Indicator Green On Faulty MagicBus

Board

Blinking With 5 & 4: UART;

Individually: USB

LED 1 Off No Power

Power to

MagicBus

Center, Near

Fuse F2 Indicator Red On Power Present

Board Blinking Intermittent Power

MagicBus



 Interface Connector & Jumper Table

Jumper Location Function Meaning Setting Default

JP 1 Upper Right Blue High Impedance Open 

Between Video Low Impedance 1 & 2

(Note 1) JP4 and JP2 Impedance High Impedance 2 & 3

JP 2 Upper Right Green High Impedance Open 

Between Video Low Impedance 1 & 2

JP1 & JP3 Impedance High Impedance 2 & 3

JP 3 Upper Right Red High Impedance Open 

Between Video Low Impedance 1 & 2

(Note 3) JP2 & JP5 Impedance High Impedance 2 & 3

JP 4 Upper Right Video Positive Sync Open

Near Sync Negative Sync 1 & 2 

(Note 3) JP1 & JP2 Polarity Positive Sync 2 & 3

Wiring & Circuit Information 4-18

Wheel Driver Board Assembly 04-12770.1

Wheel Driver Board Led Indicator Table

Designation Location Function Color State Meaning

LED 1 Right Center, Near

C5 & P2 Indicator Red Off Not In Use

On Normal Operation

Blinking Power Fault

(Note 1)

Notes:

1. LED 1 monitors regulated power supply voltage source. Must be on continuously. Flash or blinking

indicates intermittent connection, power problem, circuit fault, etc.

Wiring & Circuit Information 4-19

Wheel Driver Board Schematic, 1/8

Wiring & Circuit Information 4-20

Wheel Driver Board Schematic, 2/8

Wiring & Circuit Information 4-21

Wheel Driver Board Schematic, 3/8

Wiring & Circuit Information 4-22

Wheel Driver Board Schematic, 4/8

Wiring & Circuit Information 4-23

Wheel Driver Board Schematic, 5/8

Wiring & Circuit Information 4-24

Wheel Driver Board Schematic, 6/8

Wiring & Circuit Information 4-25

Wheel Driver Board Schematic, 7/8

Wiring & Circuit Information 4-26

Wheel Driver Board Schematic, 8/8

Servicing 5-1

OFFROAD

FFROADFFROAD

FFROAD

THUNDER

THUNDERTHUNDER

THUNDER

CHAPTER

SERVICING

NOTICE: The term VGM refers to the video game machine.

NOTICE: Avoid damage to electronics! Turn off VGM power before servicing circuit

boards or any electronic assembly. Never “hot plug” circuit boards.

CAUTION: Static electricity builds up on your body. This static can damage or destroy

sensitive circuits. Before touching or handling electronics, discharge static electricity by

touching the power supply chassis.

Servicing 5-2

DISASSEMBLY & REASSEMBLY

This chapter includes summarized procedures for disassembling and reassembling VGM components.

Only qualified service personnel should repair VGM equipment. The following product guidelines apply to

all video game operators and service personnel. Notes, cautions and warnings appear throughout this

manual where they apply. Study the Safety pages before beginning service.

• Arcade Computer

Switch off power to the VGM. Open

and remove the rear door. The

Arcade Computer is behind this door.

To expose Arcade Computer circuitry,

loosen four metal thumbscrews. Don’t

remove the screws. These screws

reside at the top and bottom corners

of the case. Slide off the back of the

computer. For most computer service,

you must also separate the Player

Panel Cabinet and Monitor Cabinet.

• Audio Amplifier Board

Switch off power to the VGM. Unlock and raise the top door of the Player Panel Cabinet. Note the

orientation of the connector and other cables. Extract the harnesses from the board connectors.

Remove mounting screws and washers from the Audio Board. Lift the board off its mounting posts.

Handle the board by a heatsink. If you aren’t reinstalling the board, store it in an anti-static bag and

protective container.

• Battery

CAUTION: If you install the battery incorrectly, it may explode! Avoid direct shorts

across the terminals or from terminals to ground. These batteries are designed for

very long life. Don’t attempt to recharge these batteries!

CAUTION: Avoid an explosion! Replacement batteries must match the originals in

size, voltage rating, and composition. Manufacturer recommended equivalent types

are acceptable. Store batteries in a safe place until you’ve completed repairs.

Dispose of used batteries according to manufacturer instructions.

A battery on the CPU Board retains data in memory during power disruptions. This battery is a 3-volt,

lithium button cell. Switch off power to the VGM. Separate the Player Panel Cabinet and Monitor

Cabinet. Unlock and raise the top door of the Player Panel Cabinet. The Arcade Computer is under

this door. Remove the back of the Arcade Computer. The battery resides toward the edge of the

Servicing 5-3

motherboard, near the daughter board sockets. Carefully pry up the battery retaining lever. Then

grasp the battery edges and remove the device. Set the battery aside.

Note the “+” marking on one side of the replacement battery. When you install a battery, this “+”

marking must face the battery retaining lever. After replacing the battery, set the system clock to the

correct date and time. Also enter the Menu System and check or update system adjustments as

necessary.

• Coin Counter

Meter replacement requires vault removal. Switch off power to the VGM. Unlock and open the coin

door and cashbox door. Find the meter behind the bottom of the cashbox door. Remove the cashbox.

Remove two mounting screws at the bottom (front) of the vault assembly. Reach through the cash

door. You’ll find two mounting screws at the back of the vault. Remove these. Access the four

remaining vault screws from the inside-back of the cabinet. Remove these four screws. Slide the vault

out of the cabinet.

Locate the meter wires under the vault. Disconnect wiring at the connector. Remove two mounting

screws from the front of the meter. Remove the meter. Assure that the replacement meter has a

diode across its terminals. This diode protects driver circuits from the meter’s inductive kick. Install

the new meter. Log the new meter count.

• Coin Mechanism

Switch off power to the VGM. Unlock the coin door and swing it open. To clean or replace a coin

mechanism, unlatch and remove it. After reinstallation, assure that the mechanism seats fully in its

bracket. Close and lock the release latch. Then close the door. Enter the Menu System to change the

coin mechanism setup. Test known good and bad coins to verify operation.

• CPU Board

The CPU Board is part of the Arcade

Computer. Switch off power to the

VGM. Separate the Player Panel

Cabinet and Monitor Cabinet. Unlock

and raise the top door of the Player

Panel Cabinet. The Arcade Computer

is under this door. Find the four metal

thumbscrews at the top and bottom

corners of the computer case. To

expose the CPU Board, loosen, but

don’t remove these screws. Slide off

the back of the computer. Disconnect

the floppy disk power and data cables

at the disk drive. Remove the floppy

drive mounting bracket. Lift the

bracket and floppy drive out of the

cabinet. Set these aside for

reassembly. Remove the CPU Board

power cables at the CPU Board.

Remove the circuit board retention

bars. Remove the Video card,

Network card, and DC Filter board.

Disconnect the hard drive power and

data cables at the disk drive. Remove

CPU Board mounting screws. Lift the

circuit board out of the cabinet and set

it aside for reassembly. Use anti-static

packaging from new parts to store

boards that you won’t reinstall.

20-10551

04-12651

20-10550

A-23350

5795-15344-12

20-10552

20-10555

20-10554

04-12687

Servicing 5-4

• Dashboard and Steering Mechanism

Switch off power to the VGM. Separate the

Player Panel Cabinet and Monitor Cabinet.

Unlock and raise the top door of the Player

Panel Cabinet. Disconnect the wiring

harnesses from the dashboard. Support the

steering wheel. Remove one screw from

each corner of the instrument cluster.

Remove the support. Carefully set the dash

assembly on your workbench.

Inspect the motor, pulleys, and belt. If the

belt is broken or shows signs of wear,

replace it. Locate the two nuts on each side

of the motor mounting bracket. Loosen all

four bracket nuts. Rotate the tension

adjustment bolt as necessary. Tighten this

bolt until the belt is taut. Then restore correct

tension by loosening the bolt one full turn.

Tighten the motor bracket nuts.

• DIMMs (Dual In-Line Memory Modules)

DIMM circuits contain the computer read-write

memory for this VGM. Switch off power to the

VGM. Separate the Player Panel Cabinet and

Monitor Cabinet. Unlock and raise the top door

of the Player Panel Cabinet. Remove the back

of the Arcade Computer. Unplug the ribbon

cable from the floppy drive. Leave the other

end of the cable attached to the CPU Board.

Unscrew and remove the circuit board retention

bars. Remove the floppy drive mounting

bracket. Remove the floppy drive. Note DIMM

positions. Press out on the locking retainer on

each side of the DIMM. The DIMM should

partially or completely pop out of its socket. Lift

the DIMM from its socket. Handle the DIMM

only by its edges.

To reinstall memory circuits, orient the DIMM

over its socket. Make sure that you’ve

positioned the keying holes and notch properly.

Push the DIMM board into its socket, so that

the board snaps into place under the locking

retainer on each side of the socket. Be sure

that the retainers mate tightly with DIMM board

notches. Don’t attempt to force a DIMM into its

socket.

Servicing 5-5

• Dollar Bill Validator

(Use MARS AE2451-U3E, UL-recognized currency changer)

You can install dollar bill validators in VGMs manufactured with the additional wiring connector. Other

currency acceptors will also work with this connector.

Switch off power to the VGM and unplug the AC line cord. Unlock the coin door and swing it open.

Read the coin door label for additional information.

Remove nuts, spacers, and the cover plate from the door. before mounting the validator, change

switch settings or make adjustments. If the manufacturer supplied an adapter plate, place it over the

door cutout. Install spacers on threaded studs. Then align the validator mounting holes with the

studs. Seat the validator in the door opening. Install the nuts and tighten them.

Attach the ground wire (green with yellow stripe) lug to the door ground stud. The stud is beside the

hinge. Mate the wiring harnesses and press them together to fully seat connectors. Route wires away

from the door edges and hinge. Inspect the bill chute for proper alignment. Set the dollar bill validator

to produce 50ms output pulse widths, 1 pulse per dollar. This setting avoids counting errors. To

remove a validator for service or replacement, reverse these steps.

Plug in the line cord and turn on the VGM. From the Menu System, change the mechanism setup and

pricing. Then test known good and bad bills to verify proper operation. Close and lock the coin door.

• Fans

The Arcade Computer incorporates several fans. Two fans reside at the bottom of the Arcade

Computer enclosure. The power supply includes one fan. Inside the microprocessor cartridge is

another small fan.

Switch off power to the

VGM. Separate the Player

Panel Cabinet and Monitor

Cabinet. Unlock and raise

the top door of the Player

Panel Cabinet. Remove the

back of the Arcade

Computer.

FANS AT THE BOTTOM

OF THE ENCLOSURE.

Disconnect the fan’s power

harness. Remove the fan

mounting screws. Note the

fan orientation. Each fan

has an arrow molded into its

plastic case to indicate

airflow direction. Slide the

fan out of its mounting

bracket. Be certain to

reinstall the fan in the

proper direction to assure

airflow over circuitry.

POWER SUPPLY FAN. The power supply contains no user-serviceable parts. Never open the power

supply.

Servicing 5-6

MICROPROCESSOR FAN.

Unscrew and remove the

circuit board retention bars.

Remove the floppy drive

mounting bracket. Unplug the

ribbon cable from the floppy

drive. Remove the floppy

drive. Disconnect the fan’s

power harness. Remove the

microprocessor cartridge.

Squeeze the plastic end tabs

on the fan side of the

cartridge. While squeezing,

carefully pry the fan assembly

away from the heatsink. If the

fan is bad, replace the entire

fan assembly with a new one.

Reassemble the cartridge and

insert it into the computer.

Then reconnect fan power.

• Floppy Disk Drive

Switch off power to the VGM. Separate the Player Panel Cabinet and Monitor Cabinet. Unlock and

raise the top door of the Player Panel Cabinet. Remove the back of the Arcade Computer. Disconnect

the DC power cable from the floppy drive Unplug the ribbon cable from the floppy drive. Leave the

other end of the cable attached to the CPU Board. Unscrew and remove the circuit board retention

bars. Remove the drive bracket mounting hardware. Remove the bracket. Remove the drive

mounting screws. Lift the drive off the mounting bracket. Save the mounting screws for reuse in future

floppy drive installations. When returning a floppy drive to your distributor, pack it in an anti-static bag.

REINSTALLATION. Mount the floppy drive in its bracket. Install the drive mounting screws. Reinstall

the bracket and drive in the Arcade Computer enclosure. Connect the drive’s ribbon and power

cables.

• Front Housing

OPENING THE DOOR AND HOUSING. Switch off power to the VGM. Unlock the front cabinet door

and swing it open. Release the latches at the corners under the front housing. Gently pull out on the

bottom of the formed front housing and swing it towards the control section. Remove the free end of

the prop rod from the retainer at the left side of the monitor shelf. Swing the rod up until it rests in the

rod bracket on the lower right side of the front housing. Lower the housing until the prop rod supports

the housing’s weight.

CLOSING THE DOOR AND HOUSING. Snap the rod into the retainer. Close the housing. Engage

latches and snap them shut. Close the front cabinet door

• Pedal Assembly

Switch off power to the VGM. Unlock and raise the top door of the Player Panel Cabinet. Disconnect

the pedal cable from the wiring harness. Disconnect the safety ground from the pedal frame. Adjust

the seat to the maximum rear position. Remove four outer mounting screws from the front perimeter

of the pedal plate. Pull the pedal toward the seat until it clears the opening. Then lift it up and away

from the cabinet.

Servicing 5-7

• Gear Shift

Switch off power to the VGM. Unlock and raise the top door of the Player Panel Cabinet. Disconnect

the two cables from the back of the shifter. At the front of the shifter, remove shift plate mounting

screws. Lift the shifter up and out of the player panel.

• Hard Disk Drive

CAUTION: Hard disk drives are very fragile! Handle them with care. Keep disk

drives away from magnets, heat and vibration. Don’t move a VGM with the power

on.

CAUTION: Don’t stack or drop hard disk drives. Use an anti-static bag and an

approved shipping container to return the drive to your distributor.

Switch off power to the VGM. Separate the Player Panel Cabinet and Monitor Cabinet. Unlock and

raise the top door of the Player Panel Cabinet. Remove the back of the Arcade Computer. Disconnect

the DC power cable from the hard drive. Unplug the ribbon cable from the hard drive. Leave the other

end of the cable attached to the CPU Board. Remove the drive mounting screws. (Don’t remove the

drive-mounting bracket.) Lift the drive out of the cabinet. Save the mounting screws for reuse in future

hard drive installations. When returning a hard drive to your distributor, pack it in an anti-static bag.

Box the drive in approved shipping container 08-8068.

REINSTALLATION. Before mounting the hard drive in its bracket, install the drive mounting screws.

To avoid damage during installation, mount the hard drive in the brackets before connecting cables.

After a driver plays one game, the new drive copies data from other linked VGMs. Important! The

data won’t copy if players are actively driving. Files transfer only when all VGMs return to Attract

Mode.

• MagicBus



 Interface Board

Switch off power to the VGM. Unlock and raise the top door of the Player Panel Cabinet. Extract the

harnesses from the board connectors. Remove mounting screws and washers from the MagicBus

Board. Remove the MagicBus Board. Lift the board off its mounting posts. During reinstallation,

tighten the screws: Start at the board’s center and work toward the outer edge. If you aren’t

reinstalling the board, store it in an anti-static bag and protective container.

• Marquee

Switch off power to the VGM. Open the front, monitor cabinet door. To replace the marquee, you

must completely remove the front housing from the monitor cabinet. Then you can access the

Servicing 5-8

marquee, and remove it from the bezel. Take the glass and artwork out of the front housing. Clean

the glass before reinstalling it. Install the bracket and tighten screws. Replace the front housing on the

monitor cabinet. Tighten mounting screws. Don’t use excess force.

• Mars Light Driver Board

Switch off power to the VGM. Unlock and remove the rear door of the Monitor Cabinet. Note the

orientation of the connector and the other cables. Extract the harnesses from the board connectors.

Remove mounting screws and washers from the Mars Light Driver Board. Lift the board off its

mounting posts. Handle the board by the edges. If you aren’t reinstalling the board, store it in an anti-

static bag and protective container.

• Microprocessor

This VGM’s microprocessor is in a postcard-size cartridge that also includes cache RAM. The

cartridge is inside the Arcade Computer, near the DIMM sockets. Switch off power to the VGM.

Separate the Player Panel Cabinet and Monitor Cabinet. Unlock and raise the top door of the Player

Panel Cabinet. Remove the back of the Arcade Computer. Unplug the ribbon cable from the floppy

drive. Leave the other end of the cable attached to the CPU Board. Unscrew and remove the circuit

board retention bars. Remove the floppy drive mounting bracket. Remove the floppy drive.

Disconnect the microprocessor fan power harness. Spread the locking retainers on each side of the

microprocessor cartridge. Pull the cartridge out of its socket. Take care not to touch the copper traces

on the socket.

To reinstall a microprocessor cartridge, orient the cartridge over its socket. Make sure that you’ve

positioned the keying notch properly. Push the microprocessor cartridge into its socket, so that the

cartridge snaps into place under the locking retainer on each side of the socket. Be sure that the

retainers mate tightly with cartridge notches. Don’t attempt to force a cartridge into its socket.

Reconnect the microprocessor fan harness.

• Monitor

WARNING: The video monitor is very heavy, with most of the weight toward

the front. Solidly support the monitor as you remove from it from the cabinet.

WARNING: When operating the monitor outside the cabinet, use an isolation

transformer. In normal operation, the monitor doesn’t require isolation from AC

line voltage.

The monitor is very heavy and difficult to balance. Removing the monitor is a two-person task. Don’t

attempt to remove it by yourself. Switch off power to the VGM. Open the front cabinet door.

Disconnect the fluorescent light assembly connector and all monitor cables. Remove the front

housing hinge screws and set the housing aside. Remove the monitor bezel and both barrier panels.

Remove the four flange nuts securing the monitor's mounting brackets to its mounting panel. Pull the

monitor carefully from the cabinet and set in a safe place. The monitor remote adjustment board is

behind the front door with the rest of the electronics. Clean the face of the CRT before reinstalling the

barrier panels and the monitor bezel.

The monitor is a medium resolution type. Other monitors may look as if you can use them for

replacements. Yet the screens of different monitor types curve differently. Only medium resolution

monitors fit correctly against the monitor bezel. Other monitor styles won’t seal properly, and also

won’t synchronize.

Servicing 5-9

• Network Interface Board

Switch off power to the VGM. Unlock and raise the top door of the Player Panel Cabinet. Remove the

back of the Arcade Computer. Note the orientation of the cables. Loosen the header-mounting screw.

Disconnect the network cables from the board header connectors. Remove the circuit board retention

bars. Remove the board. As you remove the board, handle it only by its edges. Don’t touch the

copper traces! If you aren’t reinstalling the board, store it in an anti-static bag and protective

container.

• Power Filter Board

Switch off power to the VGM. Unlock and raise the top door of the Player Panel Cabinet. Remove the

back of the Arcade Computer. Loosen the header-mounting screw. Disconnect the cables from the

board header connector. Remove the circuit board retention bars. Remove the board. As you remove

the board, handle it only by its edges. Don’t touch the copper traces! Use anti-static bags and

protective containers to store the board if you won’t reinstall it.

• Power Supply

Switch off power to the VGM. Disconnect the line cord. Unlock and raise the top door of the Player

Panel Cabinet. Remove the back of the Arcade Computer. Unplug the IEC AC power cord. Inside the

Arcade Computer, disconnect DC power cables. These connect to the hard drive, motherboard and

other peripherals. Remove four mounting screws from the outside of the Arcade Computer enclosure.

Lift the power supply out of the cabinet. Before reinstalling the power supply, check the line voltage

switch setting.

• Speakers

This VGM has four speakers. One woofer is behind a grille at the back of the driver’s seat. Smaller,

full range speakers are behind the front of the Player Panel. Below these full-range speakers is one

more woofer. Switch off power to the VGM.

Servicing 5-10

ACCESSING THE SEAT WOOFER. Remove mounting screws and set the speaker grille aside. Don’t

use excess force when removing or tightening mounting screws threaded into plastic. Avoid speaker

damage by removing the upper mounting screws first. Replace these top screws last.

ACCESSING A PLAYER PANEL CABINET SPEAKER. Unlock and raise the top door of the Player

Panel Cabinet. Remove mounting screws from the rear of the speaker.

SPEAKER REMOVAL. Assure proper polarity by marking each speaker wire (“+” or “Gnd”). Remove

the speaker from the enclosure and disconnect the wire lugs.

• Sub-Woofer Driver Board

Switch off power to the VGM. Separate the Player Panel Cabinet and Monitor Cabinet. Unlock and

raise the top door of the Player Panel Cabinet. Note the orientation of the connector and the other

cables. Extract the harnesses from the board connectors. Remove mounting screws and washers

from the Sub-Woofer Driver Board. Lift the board off its mounting posts. Handle the board by a

heatsink. If you aren’t reinstalling the board, store it in an anti-static bag and protective container. The

board has two 0.5A, 250-volt fuses. Check these with an ohmmeter. Replace bad fuses only with the

identical type.

• A.C. Power Chassis

Switch off power to the VGM. Unlock and remove the rear door of the Monitor Cabinet. Note the

orientation of the connector and the other cables. Disconnect A.C. Power Chassis harness

connectors. Remove mounting hardware from the chassis. Lift the chassis out of the cabinet.

• Video Board

Switch off power to the VGM. Separate the Player Panel Cabinet and Monitor Cabinet. Unlock and

raise the top door of the Player Panel Cabinet. Remove the back of the Arcade Computer. Loosen the

header-mounting screw. Disconnect the video cable from the board header connector. Remove the

circuit board retention bars. Remove the board. As you remove the board, handle it only by its edges.

Don’t touch the copper traces! Use anti-static bags and protective containers to store the board if you

won’t reinstall it.

• Viewing Glass

Switch off power to the game. Open the front cabinet door. To replace the viewing glass, you must

completely remove the front housing from the monitor cabinet. Lift the glass out of the front housing.

Clean the glass before reinstalling it. Install the bracket and tighten screws. Replace the front housing

on the monitor cabinet. Tighten mounting screws. Don’t use excess force.

CAUTION: Before you replace the CRT viewing glass, completely remove the

front housing assembly from the cabinet. Glass is hazardous to handle with the

housing pivoted up on the drop rod.

• Wheel Driver Board

Switch off power to the VGM. Separate the Player Panel Cabinet and Monitor Cabinet. Unlock and

raise the top door of the Player Panel Cabinet. Note the orientation of the connector and the other

cables. Extract the harnesses from the board connectors. Leave the other end of the ribbon cable

connected to the MagicBus Board. Remove four mounting screws and washers from the Wheel

Driver Board. Lift the board off its mounting posts. Handle the board by the heatsink. If you aren’t

reinstalling the board, store it in an anti-static bag and protective container.

Troubleshooting 6-1

OFFROAD

FFROADFFROAD

FFROAD

THUNDER

THUNDERTHUNDER

THUNDER

CHAPTER

TROUBLESHOOTING

NOTICE: The term VGM refers to the video game machine.

CAUTION: This VGM uses complex electronic components that are very sensitive to

static electricity. Observe the following precautions before handling VGM electronics.

Failure to do so may void your warranty and could damage electronic assemblies.

• Before servicing electronics, turn off AC power to the VGM. Wait for capacitors to discharge.

• Before touching or handling electronic assemblies, discharge static electricity on your body. To

discharge this static, begin by connecting the line cord to a grounded outlet. Don’t turn on the

VGM! Next, touch the safety ground stud of the power supply chassis.

• Store electronic assemblies in an anti-static area. Use anti-static bags to store or transport VGM

circuit boards. Transport the hard drive in its shipping container.

• Don’t remove or connect electronic assemblies when cabinet power is on. Otherwise, you’ll

damage electronic assemblies and void the VGM warranty.

• After you complete maintenance or service, replace ground wires, shields, safety covers, etc.

Install and tighten ground and mounting screws.

Troubleshooting 6-2

Coin Mechanism and Pricing Troubleshooting Table

SYMPTOM CAUSE REQUIRED ACTION

Improper settings at

Pricing Menu

From Adjustments Menu, choose PRICING

MENU. Verify that units and credits are set

correctly.

Faulty wiring 1. Check that cabinet wiring is correct for this

VGM.

2. Assure that coin meter and coin switches

connect properly to control input wires.

• VGM (video game machine)

accepts currency or tokens,

but number of credits per

coin or bill is incorrect.

Incorrect pulse width

on bill validators 1. Consult bill validator manufacturer’s literature.

Adjust pulse width on validator to long setting.

2. Retest validator operation.

Improper currency 1. Unlock and open cash door. Empty cash box.

Inspect revenue for counterfeit currency.

2. Check vault. Remove any items that block path

from mechanism.

Faulty coin

mechanism

1. Unlock and open coin door. Check each

mechanism for proper mounting.

2. Remove mechanism.

3. Clear currency path.

4. Reinstall mechanism and latch it.

5. Enter Menu System by pressing and holding

TEST MODE switch inside coin door. From

Diagnostics Menu, choose SWITCH TEST. Use

tests to confirm operation of coin switches.

• VGM won’t accept currency

or tokens.

• VGM won’t start.

• Audio and video are present.

Tilted coin

mechanism or VGM

1. Verify that mechanism is level after doors close.

2. Repair or replace coin door if it is bent or

damaged.

3. If necessary, adjust cabinet leg levelers to keep

mechanisms vertical.

Burned-out bulb 1. Burned-out bulbs may appear white or

darkened. Check continuity with DVM.

2. Replace burned-out bulb with same type.

• Coin indicators don’t light

Open fuse circuit 1. Check fuse continuity with DVM.

2. If fuse is blown, replace fuse with same type.

3. If fuse isn’t blown, check wiring.

Typical Coin Mechanism Mounting

Troubleshooting 6-3

VGM Startup Troubleshooting Table

SYMPTOM CAUSE REQUIRED ACTION

Power problem 1. Check that VGM power switch is on.

2. Inspect computer to see if fans are turning. If not:

Is computer power supply connected to its power

cable? Is computer power supply turned on?

3. Plug VGM into AC power outlet. Verify presence

of AC line voltage.

Improper line voltage

switch setting

Turn off VGM power. Unplug AC line cord. Check

line voltage switch. If necessary, set it to agree

with local AC line voltage. Retest VGM.

Open fuse 1. Turn off VGM power. Examine AC fuse at rear of

VGM, on AC cord plug plate.

2. Replace faulty fuses with identically rated parts.

3. Turn on VGM power. If fuse opens again, check

AC wiring harness and connectors.

Faulty wiring 1. Remove line cord. Test line cord, power plug,

and IEC connector for breaks or damage. Verify

continuity of each wire in cord. Install cord at

power chassis. Press connector firmly to seat it.

2. Check computer cord in same manner.

3. Assure that cabinet wiring harness connectors

fully seat in corresponding power supply and

board connectors.

4. Inspect wiring for breaks or damage.

• VGM (video game machine)

doesn’t start.

• VGM appears completely

non-functional.

• No audio

• No illumination

• No video display

Arcade computer

problem Turn off power for one minute and turn VGM on

again. Power On Self-Test checks electronics.

Screen may report errors. If video circuits don’t

operate properly, computer produces series of

beeps. (See Error Message Troubleshooting

Table.)

Location of Power Supply and Line Cord

Troubleshooting 6-4

VGM Startup Troubleshooting Table, continued

SYMPTOM CAUSE REQUIRED ACTION

Power problem 1. Inspect circuit boards under low-light conditions.

LEDs glow if processor circuits receive voltage.

Fan should be turning. These indications prove

presence of DC from power supply. Still,

voltages or signals may not be normal.

Computer has no internal LEDs.

2. Turn on VGM power. Using 20-volt DC setting

on digital voltmeter, measure DC voltages at

power connector pins. (Power supply voltage

isn’t adjustable.)

3. Using 2-volt AC setting on digital voltmeter,

measure same DC voltages as above. Any

reading here indicates that supply voltages are

unstable and may contain ripple or noise.

Faulty wiring Turn off VGM power. Assure that wiring

harness connectors attach and fully seat onto

mating board connectors. Verify that harness

connects to computer.

Improper jumper or

DIP switch settings Verify that circuit board jumpers are set as

intended. Check DIP switch settings.

• VGM (video game machine)

appears non-functional.

• Currency acceptor price

indicator is illuminated.

Faulty circuit boards

or arcade computer

1. Run power-up self-test sequence. Note errors

or failures during tests. Compare LEDs with

LED indicator status charts. Note discrepancies.

2. Turn off computer. Wait for hard disk to stop

spinning. Leave VGM power on. Loosen

computer case thumbscrews and lift off cover.

Turn computer power on. Listen for beeping

sounds. Compare beeps with Error Message

Troubleshooting Table.

CAUTION: Don’t remove or install any connector while power is turned on. Doing so

will damage circuit boards or hard disk drive, and void warranty.

Front View of Coin Door Interior View of Electronics

Troubleshooting 6-5

VGM Startup Troubleshooting Table, continued

SYMPTOM CAUSE REQUIRED ACTION

Faulty coin

mechanism

1. Unlock and open coin door. Check each

currency acceptor to assure proper mounting.

Verify that each release latch is closed and

locked. Does mechanism accept and reject

currency correctly? Test mechanism with good

and bad coins.

2. Inspect to see if external acceptor indicators

(Pricing, Flashing Arrows, etc.) are lit.

1. Verify that each acceptor operates properly by

placing it in working VGM. Replace bad parts.

Faulty switches 1. Enter Menu System by pressing and holding

TEST MODE switch inside coin door. From

Diagnostics Menu, choose SWITCH TEST. Use

tests to confirm operation of each switch in VGM.

2. Assure that no loose parts or wires are caught in

switch contacts.

3. Check for continuity in each suspect switch

connection (Common to Normally Open or

Common to Normally Closed).

4. Replace faulty switches (bent levers, broken

actuators, etc.).

• VGM (video game machine)

doesn’t start.

• VGM accepts currency or

tokens.

• Audio and video are present.

Faulty wiring 1. Assure that no wires are caught in hinges,

latches or switch contacts.

2. Check wiring continuity from circuit board

connectors to acceptors.

Interior View of Coin Door and Cash Door

Troubleshooting 6-6

Audio Troubleshooting Table

SYMPTOM CAUSE REQUIRED ACTION

Improper volume

setting

Enter Menu System by pressing and holding

TEST MODE switch. From Operator (Main)

Menu, choose VOLUME MENU. Check that

Attract Music is on (enabled). Verify that all

volume levels are set well above zero. If

necessary, change levels to make VGM audible.

Faulty wiring Turn off VGM power. Assure that wiring harness

connectors attach and fully seat onto mating

board connectors. Verify that harness connects

to computer. Check audio cable connectors in

same way.

Faulty or obstructed

speaker Remove grilles and inspect speakers. Free

speaker cones, terminals, mounting screws and

magnets of loose parts or wires.

• No audio

• Video is present

• VGM (video game machine)

appears to operate normally

Faulty Audio Board Verify proper operation of Audio Board by

placing it in working VGM.

Faulty wiring 1. Check that cabinet wiring is correct for this VGM.

2. Verify that cabinet wiring provides separate wires

(not common return) for each speaker.

3. Check connection of all cabinet ground wires.

Faulty Audio Board 1. Run power-up self-test sequence. Note errors

that VGM finds during tests.

2. Verify that BB12 Audio Board operates by

placing it in working VGM.

3. If problem persists: Check regulator U5;

capacitors C1, C2, C3, C14 and C30.

4. Replace bad parts.

• Constant low hum from all

speakers.

Faulty power supply Using 2 Volt AC setting on digital voltmeter,

measure voltages at speaker terminals. Any

reading indicates unstable supply that may

contain ripple or noise.

Faulty or improper

speaker

1. Turn off VGM power. Remove grilles and check

speakers. Assure that speakers are full range

(100 to 10,000 Hz response) and rated for at

least 20 watts. Woofers must be rated for at least

40 watts.

2. Verify proper speaker operation by connecting

speaker in question to working VGM.

• Audio is distorted, muffled or

has missing frequencies.

Faulty wiring Multiple-speaker installations: Check for

reversed wires at one speaker. Weak low

frequencies and thin or hollow sound quality is

symptom of incorrectly phased speakers. Sound

tests may not detect this condition, but you can

hear it during Game Mode.

Faulty speaker 1. From Diagnostics Menu, choose SOUND TEST.

Recheck speakers with audio signals provided

by test.

2. Verify proper speaker operation by connecting

speaker in question to working VGM.

Faulty circuit board Run power-up self-test sequence. Note errors

that VGM finds during tests. Compare circuit

board LEDs with LED indicator status charts.

Note discrepancies.

• Dead sound channel

Faulty wiring Verify that cabinet wiring is correct. Assure that

all speakers connect to audio wires. Audio cable

must be fully seated in Computer Line Output

Jack. Check for broken or shorted wires.

Troubleshooting 6-7

Error Message Troubleshooting Table

Power-On Self-Test Beep Codes

Audio beeps only. Video may or may not be present. See notes.

MESSAGE MEANING REQUIRED ACTION

No beep No system power Check power supply and cables

1 continuous beep Partial system power Check power supply and cables

1 short beep Normal start; no errors Check other VGM components

2 short beeps Processor problem Check processor/fan module

3 short beeps Graphics initialization problem Check Video Board, cables

4 short beeps Processor problem Check processor/fan module

5 short beeps Insufficient system memory Check DIMM circuit modules

6 short beeps Peripheral problem Check other VGM components

Notes

• The audio buzzer that generates 1 kHz beeps is in the computer, inside the VGM (video game machine). If

you have difficulty hearing beep codes, remove the rear cabinet door and computer cover.

• Arcade Computer circuit boards resemble those in personal computers. Yet Midway engineers reprogrammed

the boards for application in this VGM. Power-On Self-Test codes are unique to the Arcade Computer in this

VGM.

• Wiring or peripheral circuit problems may not trigger on-screen error messages. You may discover difficulties

during Menu System diagnostic or calibration procedures.

• For help with unresolved error messages, call your authorized distributor.

NOTICE: Don’t attempt to move computer circuit boards into alternate slots. Midway

assigned boards to specific slots. The custom operating system won’t recognize

improperly placed boards, even though they function normally.

Location of Beeper in Arcade Computer

Troubleshooting 6-8

Link Troubleshooting Table

SYMPTOM CAUSE REQUIRED ACTION

Faulty wiring 1. Don’t extend linking cables that come with VGM.

2. Install required crossover between VGM

cabinets. Each coupler connects two cabinets

(one pair). Don’t use standard telephone type

couplers or wiring to link cabinets.

3. Use only 10Base-T, Ethernet-type, Category 5,

twisted-pair wiring for VGM data.

• Can’t connect VGMs (video

game machines) together

Improper linking

hardware

Use required network hub for your local network.

Hub Link Kit permits up to four cabinet

connections. Cabinet array completion requires

basic kit brackets and spacers.

Improper settings 1. Record any error messages that occur during

self-test.

2. From Operator (Main) Menu, choose

Adjustments Menu. Then select Linked Play

Adjustments Menu. Assure that you’ve set

LINKED PLAY to ON.

3. Be sure that each VGM has unique ID number.

Power problem If hub is in use, verify that power is applied. AC

adapter wires are thin and easily damaged.

• VGM doesn’t recognize

Front Cover PDF Off Road Thunder (39in) [Operation] [English]

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