NCR 7458 1442a User Manual To The 864e300e 4bab 4d83 Bbf5 A6631528bc79

User Manual: NCR 7458 to the manual

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Table of Contents
Product Overview
- Introduction
- Label Locations
POST Diagnostics
- Power-On Self-Test (POST) Errors
Hardware Service
Cable Routing Guide
Feature Kits
- Feature Kit List
Hardware Specifications
- Performance Levels
- Interrupts
Index

NCR RealPOS 7458

Release 1.0

Hardware Service

B005-0000-1442

Issue A

The product described in this book is a licensed product of NCR Corporation.

NCR is a registered trademark of NCR Corporation.

NCR RealPOS, NCR RealPrice, NCR RealScan, NCR EasyPoint and NCR FastLane are either registered

trademarks or trademarks of NCR Corporation in the United States and/or other countries.

It is the policy of NCR Corporation (NCR) to improve products as new technology, components, software,

and firmware become available. NCR, therefore, reserves the right to change specifications without prior

notice.

All features, functions, and operations described herein may not be marketed by NCR in all parts of the

world. In some instances, photographs are of equipment prototypes. Therefore, before using this document,

consult with your NCR representative or NCR office for information that is applicable and current.

To maintain the quality of our publications, we need your comments on the accuracy, clarity, organization,

and value of this book.

Address correspondence to:

Manager, Information Products

NCR Corporation

2651 Satellite Blvd.

Duluth, GA 30096

By NCR Corporation

Dayton, Ohio U.S.A.

Preface

Audience

This book is written for hardware installer/service personnel, system

integrators, and field engineers.

Notice: This document is NCR proprietary information and is not to

be disclosed or reproduced without consent.

Safety Warnings

Servicing

Caution: This product does not contain user serviceable parts.

Servicing should only be performed by a qualified service technician.

Fuse Replacement

Caution: For continued protection against risk of fire, replace only

with the same type and ratings of fuse.

Attention: Pour prévenir et vous protéger contre un risque de feu,

remplacer la fusible avec une autre fusible de même type, seulement.

Power Supply Cord Used as Disconnect Means

Caution: The power supply cord is used as the main disconnect

device. Ensure that the socket outlet is located/installed near the

equipment and is easily accessible.

Attention: Le cordon d'alimentation est utilisé comme interrupteur

général. La prise de courant doit être située ou installée å proximité du

matériel et être facile d'accés.

Lithium Battery Warning

Caution: Danger of explosion if battery is incorrectly replaced.

Replace only with the same or equivalent type as recommended by the

manufacturer. The battery is battery is recyclable. At the end of its

useful life, under various state and local laws it may be illegal to

dispose of this battery into the municipal waste. Contact officials for

recycling options or proper disposal.

Attention: Il y a danger d'explosion s'il y a remplacement incorrect de

la batterie. Remplacer uniquement avec une batterie du même type ou

d'un type recommandé par le constructeur. Mettre au rébut les

batteries usagées conformément aux instructions du fabricant.

Battery Disposal (Switzerland)

Refer to Annex 4.10 of SR814.013 for battery disposal.

IT Power System

This product is suitable for connection to an IT power system with a

phase-to-phase voltage not exceeding 240 V.

Peripheral Usage

This terminal should only be used with peripheral devices that are

certified by the appropriate safety agency for the country of installation

(UL, CSA, TUV, VDE) or those which are recommended by NCR

Corporation.

Caution: DO NOT connect or disconnect a printer, keyboard, or any

other terminal-powered peripheral while the terminal is powered on.

Doing so may result in peripheral or system damage.

Environmental Consciousness

NCR is demonstrating its concern for the environment by designing an

intelligent power management system into this terminal that operates

efficiently whether the system is in a stand-alone or network

environment.

iii

Grounding Instructions

In the event of a malfunction or breakdown, grounding provides a

path of least resistance for electric current to reduce the risk of electric

shock. This product is equipped with an electric cord having an

equipment-grounding conductor and a grounding plug. The plug must

be plugged into a matching outlet that is properly installed and

grounded in accordance with all local codes and ordinances. Do not

modify the plug provided – if it will not fit the outlet, have the proper

outlet installed by a qualified electrician. Improper connection of the

equipment-grounding conductor can result in a risk of electric shock.

The conductor with insulation having an outer surface that is green

with or without yellow stripes is the equipment-grounding conductor.

If repair or replacement of the electric cord or plug is necessary, do not

connect the equipment-grounding conductor to a live terminal. Check

with a qualified electrician or service personnel if the grounding

instructions are not completely understood, or if you are in doubt as to

whether the product is properly grounded.

Use only 3-wire extension cords that have 3-prong grounding plugs

and 3-pole receptacles that accept the product’s plug. Repair or replace

damaged or worn cords immediately.

References

• NCR RealPOS 7458 Hardware User’s Guide (B005-0000-1440)

• NCR RealPOS 7458 Site Preparation (B005-0000-1441)

• NCR RealPOS 7458 Parts Identification Manual (B005-0000-1443)

• NCR 5932 USB Keyboard User’s Guide (B005-0000-1395)

• NCR 5932 Wedge Keyboard User’s Guide (BD20-1369-A)

• NCR 5942 12.1-Inch LCD Monitor User’s Guide (B005-0000-1394)

• NCR 5953 12.1-Inch DynaKey User’s Guide (B005-0000-1161)

• NCR 5952 Wedge DynaKey User’s Guide (BD20-1370-A)

• NCR 5964 12.1-Inch Touch LCD User’s Guide (B005-0000-1324)

• NCR 5972 2 x 20 Customer Display User’s Guide (B005-0000-1372)

• NCR 5973 International VFD Customer Display User’s Guide

(B005-0000-1162)

• NCR 5982 5-Inch LCD Operator Display User’s Guide (BD20-1443-A)

• NCR 7158 Thermal Receipt and Impact Printer Owner’s Guide

(B005-0000-1112)

• NCR 7167 Two-Station POS Printer Owner’s Guide (B005-0000-1406)

• NCR 7162 Printer Setup & User’s Guide (BD20-1453-A)

• NCR 7194 Thermal Receipt Printer Owner’s Guide (B005-0000-1097)

• NCR 7197 Receipt Printer Owner’s Guide (B005-0000-1409)

• NCR 5945 Electronic Payment Terminal User’s Guide (B005-0000-1104)

• NCR 5992 Signature Capture User’s Guide (B005-0000-1108)

Table of Contents

Chapter 1: Product Overview

Introduction ...........................................................................................1-1

Cabinet .............................................................................................1-2

Label Locations......................................................................................1-4

Chapter 2: POST Diagnostics

Power-On Self-Test (POST) Errors .....................................................2-1

Recoverable POST Errors ..............................................................2-2

Error and Beep Codes ....................................................................2-2

Terminal POST Errors....................................................................2-6

Test Points and Beep Codes..........................................................2-6

Chapter 3: Hardware Service

Introduction ...........................................................................................3-1

Safety Requirements ......................................................................3-1

Back Panel Cable Connectors..............................................................3-3

Electronics Box Disassembly Procedures ..........................................3-4

Removing the Electronics Tray.....................................................3-4

Replacing the Electronics Tray.................................................3-5

Removing the Motherboard..........................................................3-6

Replacing the Motherboard....................................................3-10

Removing a PCI Adapter Card...................................................3-11

Removing the Power Supply ......................................................3-12

Replacing the Power Supply ..................................................3-13

Removing the Flexible Disk Drive .............................................3-13

Replacing the Flexible Disk Drive .........................................3-14

Removing the CD-ROM Drive ...................................................3-14

Replacing the Front Panel Control Board.............................3-16

Replacing the CD-ROM Drive................................................3-17

Removing the Hard Disk.............................................................3-19

Removing the Hard Disk Assembly......................................3-20

Replacing the Hard Disk Assembly ......................................3-20

Removing the Compact Flash.....................................................3-21

Replacing the Compact Flash.................................................3-22

Removing the Secondary Hard Disk .........................................3-23

Replacing the Secondary Hard Disk .....................................3-23

Removing the UPS Battery Assembly .......................................3-25

Replacing the UPS Batteries ...................................................3-26

Removing the Fan.........................................................................3-28

Circuit Boards......................................................................................3-29

Processor Board ............................................................................3-29

Jumper Settings ........................................................................3-30

Memory Configurations..........................................................3-30

Installing Memory Modules ...................................................3-31

Replacing the CPU ...................................................................3-32

Replacing the Lithium Battery ...............................................3-35

USB Daughter Card......................................................................3-36

Controller Ports ........................................................................3-36

3-Slot PCI Riser Card ...................................................................3-39

Ethernet Circuitry.........................................................................3-40

PCI LCD Board (5953-K152) .......................................................3-41

PCI LCD Board (5952-K052) .......................................................3-42

Setting the Panel Select Switch (SW1) ...................................3-42

PCI VGA Video Card (7456-K350).............................................3-43

4-Port PCI RS-232 Board (3030-K169)........................................3-44

4-Port PCI RS-232 Expansion Card (3212-K170) ......................3-45

2-Port PCI RS-232 Expansion Card (3212-K171) ......................3-46

Cash Drawer ........................................................................................3-47

vii

Latch Assembly Wiring and Adjustments................................3-47

Power Supply ......................................................................................3-48

AC Input ........................................................................................3-48

DC Outputs ...................................................................................3-48

Maximum Rated Output Power.................................................3-49

UPS .................................................................................................3-49

Battery Performance ................................................................3-50

Power Supply Cable Pin-Outs....................................................3-51

Clearing the Password .......................................................................3-52

Connector Pin-Out Identification .....................................................3-53

Primary Power (PS1)....................................................................3-53

USB Daughter Card Power (CN12) ...........................................3-54

USB Daughter Card (CN12)........................................................3-54

Front Panel (CN1).........................................................................3-56

Box Fan ......................................................................................3-56

Speaker ......................................................................................3-56

Key .............................................................................................3-56

Power LED ................................................................................3-56

Hard Drive LED .......................................................................3-56

ON/OFF ....................................................................................3-57

Link Integrity LED ...................................................................3-57

Reset...........................................................................................3-57

Back Panel I/O..............................................................................3-57

PS/2 Kybd/Mouse (CN1).......................................................3-57

Serial COM1 (CN6) ..................................................................3-58

Serial COM2 (CN5) ..................................................................3-58

Serial COM3 (CN6) ..................................................................3-59

Serial COM4 (CN5) ..................................................................3-59

Serial COM5 UPS (CN9) .........................................................3-60

Video Monitor (CN3)...............................................................3-60

Ethernet (CN2)..........................................................................3-61

viii

CPU Fan (CN10).......................................................................3-61

LCD Interface (CN4)................................................................3-62

Parallel (CN3) ...........................................................................3-63

IDE-1/IDE-2 (CN17, CN14) ........................................................3-64

Flexible Diskette (CN18)..............................................................3-65

PCI Riser Card (PCI1) ..................................................................3-66

PCI Riser Card ..............................................................................3-69

Chapter 4: Cable Routing Guide

Primary IDE Cable................................................................................4-1

Secondary IDE Cable............................................................................4-3

Flex Diskette Cable ...............................................................................4-4

Front Panel Cables ................................................................................4-5

UPS Battery Cables ...............................................................................4-6

Fan Cable................................................................................................4-7

UPS Power Cable ..................................................................................4-8

USB Daughter Card Cable ................................................................... 4-9

Power Supply Harness Clamp..........................................................4-10

Appendix A: Feature Kits

Feature Kit List .....................................................................................A-2

Appendix B: Hardware Specifications

Performance Levels.............................................................................. B-1

Interrupts............................................................................................... B-1

Revision Record

Issue Date Remarks

A Feb 2003 First issue

Radio Frequency Interference Statements

Federal Communications Commission (FCC)

Information to User

This equipment has been tested and found to comply with the limits for a Class A

digital device, pursuant to Part 15 of FCC Rules. These limits are designed to provide

reasonable protection against harmful interference when the equipment is operated in

a commercial environment. This equipment generates, uses, and can radiate radio

frequency energy and, if not installed and used in accordance with the instruction

manual, may cause harmful interference to radio communications. Operation of this

equipment in a residential area is likely to cause interference in which case the user

will be required to correct the interference at his own expense.

NCR is not responsible for any radio or television interference caused by unauthorized

modification of this equipment or the substitution or attachment of connecting cables

and equipment other than those specified by NCR. The correction of interference

caused by such unauthorized modification, substitution or attachment will be the

responsibility of the user. The user is cautioned that changes or modifications not

expressly approved by NCR may void the user’s authority to operate the equipment.

Canadian Department of Communications

This Class A digital apparatus complies with Canadian ICES-003.

This digital apparatus does not exceed the Class A limits for radio noise emissions

from digital apparatus set out in the Radio Interference Regulations of the Canadian

Department of Communications.

Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada.

Le présent appareil numérique n'émet pas de bruits radioélectriques dépassant les

limites applicables aux appareils numériques de la classe A prescrites dans le

règlement sur le brouillage radioélectriques édicté par le ministrère des

Communications du Canada.

Voluntary Control Council for Interference (VCCI)

International Radio Frequency Interference Statement

Warning: This is a Class A product. In a domestic environment this product may

cause radio interference in which case the user may be required to take adequate

measures.

xii

Declaration of Conformity

Manufacturer's Name NCR Corporation

Manufacturer's Address NCR Corporation

Retail Solutions Division – Atlanta

2651 Satellite Boulevard

Duluth, GA 30096-5810

Type of Equipment Information Technology Equipment

Model Number Class 7458

Electrical Ratings (Input) 100-120 V/200-240 V, 2.0 A/1.0 A, 50-60 Hz

NCR Corporation, 1700 South Patterson Boulevard, Dayton, OH 45459,

USA, declares that the equipment specified above conforms to the

referenced EU Directives and Harmonized Standards.

EU Directive Harmonized Standard(s)

89/336/EEC (EMC) EN 55022

EN 55024

EN61003-2

EN61003-3

73/23/EEC (Low Voltage) EN 60 950

NCR Corporation

Retail Solutions Division — Atlanta

2651 Satellite Boulevard

Duluth, GA 30096-5810

European Contact:

International IP Counsel

206 Marylebone Road

London, NW1 6LY, England

Chapter 1: Product Overview

Introduction

The NCR RealPOS 80 (also referred to as NCR 7458) is a powerful,

retail-hardened point-of-sale terminal targeted for general

merchandise, food and convenience store environments. It provides

exceptional scalability utilizing Intel Celeron and Pentium III

processors to address a range of price/performance levels and

operating system environments. The system offers superior

connectivity for retail, with support for legacy peripheral interfaces

(RS-232, PS/2, Parallel, and VGA), as well as emerging interface

standards such as Powered USB and a DVI video interface.

There are two color schemes available; Beige (G11) and Charcoal

Gray (CG1).

20311c

Beige (G11) Charcoal Gray (CG1)

1-2 Chapter 1: Product Overview

The 7458 is designed with serviceability in mind to reduce costly

downtime. It incorporates the latest in serviceability features including

tool free serviceability. Specifically, the 7458 incorporates:

• Removable hard drive – The terminal utilizes a front-side

removable hard drive that slides easily out of the cabinetry without

the use of any tools, which simplifies replacement.

• Slide out motherboard tray – All internal components are quickly

accessed and replaced without the aid of tools, which significantly

reduces repair times.

• The removable tray results in faster upgrading of memory, hard

drive or other internal components.

Cabinet

The cabinet is optimized to accommodate either modular or integrated

configurations while providing expandability for future needs.

Outstanding flexibility has been designed into the optional integration

tray for use with unified configurations. This integration tray supports

a variety of NCR’s most popular peripheral options.

Internally, the following features are supported:

• 3 PCI slots

• 2 DIMM memory sockets supporting up to 512MB of PC133

SDRAM

• Flex disk drive (standard)

• Dual Hard Disks

• CD ROM drive

• Compact flash memory

• Integrated battery back-up.

Chapter 1: Product Overview 1-3

The following table highlights the standard features and options

available with the RealPOS 80 base Models:

Major Model CPU

7458-1110 Intel 850MHz Celeron, 128MB Memory, Flex Disk, 4

RS-232, 4 Powered USB, Audio/Mic. and US Power

Cord. (G11)

7458-1111 Intel 850MHz Celeron, 128MB Memory, Flex Disk, 4

RS-232, 4 Powered USB, Audio/Mic. and US Power

Cord. (CG1)

7458-1200 Intel 850MHz Celeron, 128MB Memory, Flex Disk, Hard

Disk, 4 RS-232, 4 Powered USB, Audio/Mic. and US

Power Cords (G11)

7458-1201 Intel 850MHz Celeron, 128MB Memory, Flex Disk, Hard

Disk, 4 RS-232, 4 Powered USB, Audio/Mic. and US

Power Cords. (CG1)

7458-2200 Intel 1GHz Pentium III, 256MB Memory, Flex Disk, Hard

Disk, 4 RS-232 4 Powered USB, Audio/Mic. And US

Power Cords. (G11)

7458–2201 Intel 1GHz Pentium III, 256MB Memory, Flex Disk, Hard

Disk, 4 RS-232 4 Powered USB, Audio/Mic. And US

Power Cords. (CG1)

1-4 Chapter 1: Product Overview

Label Locations

The serial number and model number are included on a label, which is

located on the bottom of the Electronics Box Tray, which can be seen

through a rectangular hole in the bottom of the cabinet. If the terminal

was shipped with an Operating System pre-installed then there is also

a Certificate of Authenticity label.

Note: The serial number is repeated on the inside of the Front Security

Door.

20347

Model No: xxxx

Serial No: 54-xxxxxxxx

Date of Mfg. 04/10/03

Class 7458

NCR Corporation Atlanta, GA 30096 Made in Singapore

This device complies with Part 15 of the FCC rules.

Operation is subject to the following two conditions:

(1) this device may not cause harmful interference, and

(2) this device must accept any ionterference received,

including interference that may cause indesired operation.

This Class A digital apparatus complies with

Canadian ICES-003

Get Appare li numeriqe de l a classe A est

conformo a la normo NMB-003 ju Canada

ACN 000 003 592

NO.437

100-240 Vac 6.0 A 50-60 Hz

I. T. E.

E152553

Windows 2000 Pro Embedded 1-2 CPU

Certificate of Authenticity

H95X7-83WVV-CFCWW-M4MXX7-X6XGM

Product Key:

00019-068-654-234

Class:7458-2201

S/N:36309845 Date:21 November 2002

Class:7458-2201

S/N:36309845 Date:21 November 2002

Chapter 2: POST Diagnostics

Power-On Self-Test (POST) Errors

Whenever a recoverable error occurs during POST, the BIOS displays

an error message describing the problem.

If a system boot is incomplete (for example, the system is turned off

while it is going through the POST), then the next time the system is

powered on you may get a message stating that the previous boot was

incomplete. The BIOS will revert to safe values for the chip set, caches,

I/O components, etc. This provides the best possibility of returning to

the Setup routine and to normal functioning, but these values do not

always produce maximum system performance. To achieve maximum

performance after the BIOS has reverted to safe values, re-enter Setup

and select the maximum performance values.

If, for example, the terminal was simply turned off during POST, you

can return to the maximum performance values by simply entering

Setup and exiting or by rebooting.

During POST, you are asked to press <F1> and boot with the default

configuration. If you simply presses <F1> and then do not later return

to Setup, the system will boot; but the external cache will not be

enabled, even though the default configuration will enable the cache.

2-2 Chapter 2: POST Diagnostics

Recoverable POST Errors

Whenever a recoverable error occurs during POST, the BIOS displays

an error message describing the problem. If the Beep Error Codes option

is set to ON in BIOS Setup, a series of 2 beeps is issued followed

four (4) groups of 1 to 4 tones. These tones correspond to a specific

Recoverable POST Error. The table below indicates this correlation.

These Beep Codes are to assist in understanding an error in the case

where the primary display is non-functional or a non-LCD/CRT.

Error and Beep Codes

The following is a list of the checkpoint codes written at the start of

each test and the beep codes issued for terminal errors. Not all Test

Points are issued by all of the systems. If no beeps are issued for that

code, the Beeps column remains blank. In such cases, rely on the on-

screen information.

Beeps Error Message Corrective Action

Disk Errors

1-1-1-1 0200: Failure Fixed Disk Check cable/Replace

hard disk

Keyboard Errors

1-2-1-1 0210: Stuck Key Replace Keyboard

1-2-1-2 0211: Keyboard error Replace Keyboard

1-2-1-3 0212: Keyboard Controller

Failed

Replace Keyboard

1-2-1-4 0213: Keyboard locked –

Unlock key switch

Replace

Keyboard/Unlock

keyboard

Chapter 2: POST Diagnostics 2-3

Beeps Error Message Corrective Action

Video Errors

1-3-1-1 0220: Monitor type does not

match CMOS - Run SETUP

Should not happen,

unless CMOS is

corrupted. Default

Parameters in Setup.

Memory Errors

1-4-1-1 0230: System RAM Failed at

offset:

Replace Memory

module

1-4-1-2 0231: Shadow Ram Failed at

offset:

Replace Memory

module

1-4-1-3 0232: Extended RAM Failed at

address line:

Replace Memory

module

1-4-1-4 Memory type mixing detected. Replace Memory

module

1-4-2-1 Single-bit ECC error occurred. Replace Memory

module

1-4-2-2 Multiple-bit ECC error

occurred.

Replace Memory

module

CMOS Errors

2-2-1-1 0250: System battery is dead -

Replace and run SETUP

Replace CMOS battery

2-2-1-2 0251: System CMOS checksum

bad - Default configuration

used

Run Setup

Timer Errors

2-3-1-1 0260: System timer error Replace Motherboard

Real Time Clock Errors

2-4-1-1 0270: Real time clock error Replace Motherboard

2-4 Chapter 2: POST Diagnostics

Beeps Error Message Corrective Action

2-4-1-2 0271: Check date and time

settings

Set Time and Date

Configuration Errors

3-1-1-1 0280: Previous boot incomplete

- Default configuration used

3-1-1-2 0281: Memory Size found by

POST differed from EISA

CMOS

Possible Hardware

problem with

Motherboard or

memory

Diskette Errors

3-4-1-1 02B0: Diskette drive A error Replace drive or correct

setup to reflect no drive

3-4-1-2 02B1: Diskette drive B error Replace drive or correct

setup to reflect no drive

3-4-1-3 02B2: Incorrect Drive A type -

run SETUP

Replace drive or correct

setup to reflect no drive

3-4-1-4 02B3: Incorrect Drive B type -

run SETUP

Replace drive or correct

setup to reflect no drive

Cache Errors

4-2-1-1 02D0: System cache error -

Cache disabled

Replace Cache

module/Motherboard

Other Errors

4-4-1-1 02F0: CPU ID: Replace CPU

4-4-2-1 02F4: EISA CMOS not writeable Replace Motherboard

4-4-2-2 02F5: DMA Test Failed Replace Motherboard

4-4-2-3 02F6: Software NMI Failed Replace Motherboard

4-4-2-4 02F7: Fail-safe Timer NMI

Failed

Replace Motherboard

Chapter 2: POST Diagnostics 2-5

Beeps Error Message Corrective Action

4-4-3-1 02F8: CPU over temperature

error

Check/replace Fan,

Check air vents, etc

4-4-3-2 02FA: Cannot read CPU

temperature

Check/replace Fan,

Check air vents, etc.

4-4-3-3 02FA: Cannot read CPU

temperature

Replace Motherboard

4-4-3-4 02FB: Cannot read System

temperature

Replace Motherboard

4-4-4-1 02FC: SMB Connect Failed Replace Motherboard

4-4-4-2 02FD: SMB clock chip

initialization failed

Replace Motherboard

4-4-4-3 02FE: Battery not installed Install Battery

The BIOS also can issue the following beep codes during POST:

• One long tone followed by three short tones if the video

configuration fails.

• One long tone followed by two short tones if an external ROM

module does not properly checksum to zero.

An external ROM module (LAN or Video board) can also issue audible

errors, usually consisting of one long tone followed by a series of short

tones.

2-6 Chapter 2: POST Diagnostics

Terminal POST Errors

There are several POST routines that issue a POST Terminal Error and

shut down the system if they fail. Before shutting down the system, the

terminal-error handler issues a beep code signifying the test point

error, then writes the error to port 80h and attempts to initialize the

video. The handler writes the error in the upper left corner of the

screen (using both mono and color adapters). The routine derives the

beep code from the test point error as follows:

1. The 8-bit error code is broken down to four 2-bit groups.

2. Each group is made one-based (1 through 4) by adding 1.

3. Short beeps are generated for the number of times in each group.

Example: Test point 01Ah = 00 01 10 10 = 1-2-3-3 beeps

Test Points and Beep Codes

At the beginning of each POST routine, the BIOS outputs the test point

error code to I/O address 80h. Use this code during troubleshooting to

establish at what point the system failed and what routine was being

performed.

If the BIOS detects a terminal error condition, it halts POST after

issuing a terminal error beep code (see previous section) and

attempting to display the error code on upper left corner of the screen

and on the port 80h LED display.

If the system hangs before the BIOS can process the error, the value

displayed at the port 80h is the last test performed. In this case, the

screen does not display the error code.

Chapter 3: Hardware Service

Introduction

This chapter discusses procedures for disassembling the 7458 hardware

for servicing. Topics include:

• Safety requirements

• Back Panel Cable connectors

• Disassembly procedures

• Board strapping information

Safety Requirements

Caution: This product does not contain user serviceable parts.

Servicing should only be performed by a qualified service technician.

Fuse Replacement

Caution: For continued protection against risk of fire, replace only

with the same type and ratings of fuse.

Attention: Pour prévenir et vous protéger contre un risque de feu,

remplacer la fusible avec une autre fusible de même type, seulement.

Lithium Battery Warning

Caution: Danger of explosion if battery is incorrectly replaced.

Replace only with the same or equivalent type as recommended by the

manufacturer. Discard used batteries according to the manufacturer's

instructions.

Attention: Il y a danger d'explosion s'il y a remplacement incorrect de

la batterie. Remplacer uniquement avec une batterie du même type ou

d'un type recommandé par le constructeur. Mettre au rébut les

batteries usagées conformément aux instructions du fabricant.

Battery Disposal (Switzerland)

Refer to Annex 4.10 of SR814.013 for battery disposal.

3-2 Chapter 3: Hardware Service