Sounding Audio JHD40BT Heavy Duty radio with AM/FM/USB/Bluetooth User Manual JPS40BT
Sounding Audio Industrial Ltd. Heavy Duty radio with AM/FM/USB/Bluetooth JPS40BT
User manual
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| Document ID | 1986704 |
| Application ID | SbXs95fz/6UyGQKmDBLYqg== |
| Document Description | User manual |
| Short Term Confidential | No |
| Permanent Confidential | No |
| Supercede | Yes |
| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 62.42kB (780218 bits) |
| Date Submitted | 2013-06-04 00:00:00 |
| Date Available | 2013-06-10 00:00:00 |
| Creation Date | 2013-03-11 17:05:30 |
| Producing Software | Acrobat Distiller 11.0 (Windows) |
| Document Lastmod | 2013-06-10 10:09:15 |
| Document Title | JPS40BT.book |
| Document Creator | PScript5.dll Version 5.2.2 |
| Document Author: | pmack |
JHD40BT HEAVY DUTY AUDIO SYSTEM Installation and Operation Manual JHD40BT VOL + UP 1/ MUTE 2/ RPT AUDIO MENU BAND SEARCH 3/ INT SEEK /TUNE /TRK INFO ENTER DOWN VOL - 4/ RDM SEEK /TUNE /TRK 5/ DISP SCROLL EQ LOUD AS/PS 6/ MODE JHD40BT CONTENTS Copyrights and Trademarks Warnings and Compliance................................................................................. 1 Introduction ......................................................................................................... 2 Installation ........................................................................................................... 3 Wiring................................................................................................................... 4 Basic Operation .................................................................................................. 5 Tuner Operation .................................................................................................. 7 Weather Band Operation.................................................................................... 8 MP3/WMA Operation........................................................................................... 9 Bluetooth Operation ......................................................................................... 10 Care and Maintenance...................................................................................... 11 Troubleshooting................................................................................................ 12 Specifications ................................................................................................... 13 iPhone, iPod, iPod classic, iPod nano, iPod shuffle, and iPod touch are trademarks of Apple Inc., registered in the U.S. and other countries. ii JHD40BT W A R N IN G S A N D C O M P LIA N C E Important Safety Instructions NOTE: Keep the volume level Iow enough to be aware of your surroundings. NOTE: USE THE PROPER POWER SUPPLY! This product is designed to operate with a 12 volt DC negative ground battery system. FCC Notes 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 interference received, including interference that may cause undesired operation. WARNING! Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: • • • • Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. JHD40BT INTRODUCTION System Features Features of the Jensen JHD40BT audio system include: • • • • • • • • • • • • • • • White LED Backlit LCD iPx6 Waterproof Low Battery Alarm AM/FM US/EURO Tuner with 30 Presets (12 AM, 18 FM) Weatherband with Weather Alert Bluetooth (Supports A2DP and AVRCP) USB Playback of MP3/WMA Files Made for iPod/iPhone (USB Input) Mute Pre-set Equalizer - 5 settings (User > Flat > Pop > Classical > Rock) Electronic Bass, Treble, Balance and Fader Controls Output Power 40W x 4 Wired Remote Control Ready (Harley Factory Handle Controls) 2-Channel Pre-amp Line Level Outputs Auxiliary Audio Input (Rear RCA) Content List • • • • Jensen JHD40BT Radio Owner’s Manual Installation Opening Cutout Template M4 x 0.7 Screws (x4) JHD40BT INSTALLATION Before You Begin Removing the Unit Before you begin, always disconnect the battery negative terminal. To remove the radio after front mount installation, remove the covers, unscrew the installation screws and pull the radio out. Important Notes • • • Reconnect Battery Before final installation, test the wiring connections to make sure the unit is connected properly and the system works. Consult with your nearest dealer if installation requires the drilling of holes or other modifications to your vehicle. Install the unit where it does not interfere with driving and cannot injure passengers if there is a sudden or emergency stop. When wiring is complete, reconnect the battery negative terminal. Bracket Mount The VOSHD4MNT (sold separately) is a versatile mounting base/bracket for easy installation on most flat surfaces. Please use the included M4 screws to attach the radio to the bracket, as shown in the diagram below. Front Mount 1. 2. Use the included template to cut the installation opening. Check the dashboard opening size by sliding the radio into it. If the opening is not large enough, carefully cut or file as necessary until the radio slides into the opening. Check that there will be sufficient space behind the dashboard for the radio chassis. NOTE: Use only the M4 x 7-10mm length screws, included. 3. 4. 5. 6. 7. 8. 9. Place the radio in front of the dashboard opening so the wiring can be brought through the opening. Follow the wiring diagram carefully and make certain all connections are secure to ensure proper operation. After completing the wiring connections, turn the unit on to confirm operation (vehicle accessory switch must be on). If the unit does not operate, recheck all wiring until the problem is corrected. Once proper operation is achieved, turn the accessory switch off and proceed with final mounting of the chassis. Carefully slide the radio into the opening, making sure it is right-side-up. Secure the radio to the dashboard using #6 panhead screws (not provided). Replace the covers on either side of the radio. Test radio operation by referring to the operating instructions for the unit. JHD40BT WIRING WIRE COLOR GREEN WHITE LEFT REAR SPEAKER (+) LEFT FRONT SPEAKER (+) GRAY RIGHT FRONT SPEAKER (+) VIOLET RIGHT REAR SPEAKER (+) GREEN/BLACK LEFT REAR SPEAKER (-) WHITE/BLACK LEFT FRONT SPEAKER (-) GRAY/BLACK RIGHT FRONT SPEAKER (-) VIOLET/BLACK BLUE RIGHT REAR SPEAKER (-) AMPLIFIER REMOTE BLACK GROUND +12V SWITCHED RED BLUETOOTH ANTENNA WIRE (Do not connect to ground or +12VDC) GRAY WHITE RED FEMALE RCA CONNECTOR WHITE FEMALE RCA CONNECTOR 15 AMP FUSE 8 PIN MALE WIRED REMOTE RED FEMALE RCA CONNECTOR WHITE FEMALE RCA CONNECTOR FEMALE MOTOROLA TYPE ANTENNA CONNECTOR FEMALE USB 2.0 WITH RUBBER BOOT JHD40BT BASIC OPERATION Audio Menu Press the AUDIO/MENU button (3) on the control panel to access the audio menu. You can navigate through the audio menu items by pressing the AUDIO/MENU button repeatedly. Once the desired menu item appears on the display, adjust that option by pressing the VOL +/buttons (2) within 5 seconds. The unit will automatically exit the audio menu after five seconds of inactivity. The following menu items can be adjusted. 20 JHD40BT VOL + UP 1/ 17 MUTE AUDIO MENU 2/ RPT 3/ INT BAND SEARCH 16 SEEK /TUNE /TRK INFO ENTER DOWN VOL - 4/ RDM SEEK /TUNE /TRK 5/ 6/ Bass Use the VOL buttons to adjust the bass level range from “-6” to “+6”. Treble DISP SCROLL 12 EQ LOUD 11 Balance AS/PS 15 Use the VOL buttons to adjust the balance between the left and right speakers from “L12” (full left) to “R12” (full right). MODE Use the VOL buttons to adjust the treble level range from “-6” to “+6”. Fade Use the VOL buttons to adjust the fader between the rear and front speakers from “R12” (full rear) to “F12” (full front). System Menu 7 2a 13 2b 18 14 10 9 19 1. Power On/Off 2. Press the power button (1) on the front panel to turn the unit on or off. 3. 4. Volume Control The following items can be adjusted: To increase the volume, press the VOL + button (2a). To decrease the volume, press the VOL - button (2b). • Mute • • • • Press the MUTE button (17) on the control panel to mute the audio output. Press MUTE again to restore the audio output to the previous level. Mode Press the MODE button (4) on the control panel to select a different mode of operation, as indicated on the display panel. Available modes include AM/FM Tuner, Weatherband, iPod, USB, AUX In (optional Auxiliary Input), BT Audio. • • Reset The reset button should be activated for the following reasons: • • • Press and hold the AUDIO/MENU button (3) for more than 3 seconds to enter the system menu. Press the VOL +/- buttons (2) repeatedly to navigate the system menu and select the desired item. Press the INFO/ENTER button (18) to adjust the selected menu item. button (15) to return to the previous operation. Press the AS/PS • initial installation of the unit when all wiring is completed function buttons do not operate error symbol on the display • • • • Use a ball point pen or similar object to press the RESET button (19). This may be necessary should the unit display an error code. You can recover factory default settings using the RESET function located on the system menu. With “RESET” flashing, press the INFO/ENTER button (18) to activate. Key Beep (On/Off): Turn the audible beep On/Off (heard when functions/buttons are selected). NOTE: Beep tone off will not affect Battery Alarm audible tone. LCD Backlight (1/10 - 10/10): Adjust LCD brightness. LCD Contrast (1/10 - 10/10): Set LCD contrast. Tuning Region (USA/Europe): Set frequency spacing for various regions. Weather Alert Configure: Press the INFO/ENTER button (18) to see weather alert options. • Weather Alert (On/Off): Determines if the weather band alert feature is activated. • Alert Volume (1/40-40/40): Set default volume for weather alert broadcasts. Battery Alarm (On/Off): Monitor voltage on ACC line and send alert when voltage is low. Battery Auto-Off (On/Off): Automatically turn off power to radio when battery voltage is low. Bluetooth Device (Lock/Unlock, Disconnect/Connect, Delete): View, lock and delete from a list of previously paired mobile phone device models. Bluetooth Pair (On/Off): Choose “YES” to automatically pair a device. Bluetooth (On/Off): Choose “Bluetooth On” or “Bluetooth Off”. Volume Preset (1/40-40/40): Select an automatic turn-on volume. Reset to Defaults: Return the EEPROM to factory default set up values. Press the INFO/ENTER button (18) to select. JHD40BT NOTE: BT Pair and BT Device menu options are only available while the BT feature is ON and the radio is in BT Audio mode. NOTE: A locked Bluetooth device will not be overwritten from the list. Battery Alarm Operation If Battery Alarm is set to “On”, an alarm will sound (8 beeps every 30 sec) when the voltage drops to 10.5V (+/- 0.3V). A visual warning (Low Battery) will appear flashing (8 flashes every 30 sec) in the LCD display. NOTE: “Off” is the default setting for Battery Alarm. If the audio is muted or the volume is set to 0, the audible beep will not be heard. Equalizer Press the EQ/LOUD button (11) to turn on the equalization function and select between five pre-defined bass and treble curves: User > Flat > Pop > Classical > Rock. Loudness Press and hold the EQ/LOUD button (11) to toggle true loudness on/off. When listening to music at low volumes, this feature will boost the bass and treble ranges to compensate for the characteristics of human hearing. Auxiliary Input To access an auxiliary device: 1. Connect the portable audio player to the AUX IN cables routed from the rear of the radio. 2. 3. Press the MODE button (4) to select Aux In mode. Press MODE again to cancel Aux In mode and switch to the next mode. Liquid Crystal Display (LCD) The current frequency and activated functions are shown on the LCD panel (20). NOTE: LCD panels may take longer to respond when subjected to cold temperatures for an extended period of time. In addition, the visibility of the numbers on the LCD may decrease slightly. The LCD display will return to normal when the temperature increases to a normal range. Quick Exit Hot Key In the following modes and conditions, press the AS/PS button (15) < 3 seconds to quickly exit the current operation without waiting for the system default time out: • • • System menu operation Searching mode Audio menu operation JHD40BT TUNER OPERATION Automatically Store / Preset Scan (AS/PS Automatically Store Select an AM or FM band. Press and hold the AS/PS button (15) for more than three seconds to automatically select strong stations and store them in all bands. The new stations replace any stations already stored in that band. 20 JHD40BT 17 MUTE AUDIO MENU 16 VOL + UP 1/ 2/ RPT 3/ INT BAND SEARCH SEEK /TUNE /TRK INFO ENTER DOWN VOL - 4/ RDM SEEK /TUNE /TRK 5/ 6/ NOTE: During Auto Store (AS), the tuner will default to “Local” mode while scanning the band initially. After scanning the entire band once, the unit will switch to “Distant” mode for all subsequent Auto Store tuning. DISP SCROLL 12 EQ LOUD 11 Preset Scan AS/PS 15 Select a band (if needed). Press the AS/PS MODE button (15) to scan stations stored in all bands. The unit will pause for ten seconds at each preset station. Press AS/PS scanning when the desired station is reached. 7 2a 13 2b 18 14 10 9 19 Select a Band Press the BAND/SEARCH button (16) to change between three FM bands and two AM (MW) bands. Manual Tuning Press the SEEK/TUNE/TRK |<< or >>| buttons (13, 14) to seek stations up/down step by step. Auto Seek Tuning Press and hold the SEEK/TUNE/TRK |<< or >>| buttons (13, 14) to automatically seek the next or previous strong station. Preset Stations Six numbered preset buttons store and recall stations for each band. Store a Station Select a band (if needed), then select a station. Press and hold a preset button (5-10) for two seconds. The preset number will appear in the display. Recall a Station Select a band (if needed). Press a preset button (5-10) to select the corresponding stored station. again to stop JHD40BT WEATHER BAND OPERATION Accessing the Weather Band Press the MODE button (4) to access the weather band mode. What is the NOAA Weather Radio? NOAA is a nationwide system that broadcasts local weather emergency information 24 hours a day. The U.S. network has more than 530 stations covering the 50 states, as well as the adjacent coastal waters, Puerto Rico, the U.S. Virgin Islands and the U.S. Pacific Territories. Each local area has its own transmitting station and there are a total of seven broadcasting frequencies used: 162.400MHz (CH2), 162.425MHz (CH4), 162.450MHz (CH5), 162.475MHz (CH3), 162.500MHz (CH6), 162.525MHz (CH7) and 162.550MHz (CH1). How many stations can I expect to receive? Since the broadcasts pertain to local weather and information, the transmission power is usually very low (much less than AM or FM stations) which means you will usually receive only one station unless you are on the edge of two or more broadcast signals. The most you will receive is two or three, and that is rare. Is it possible I won't receive any stations? Depending on location, it’s possible to receive a very weak signal or none at all. Also, similar to AM and FM signals, weather band signals are subject to surrounding conditions, weather, obstructions of the signal by hills or mountains, etc. If no NOAA signals are found/received, the “NO SIG” icon will flash in the display and the tuner will scan all seven NOAA frequencies every 30 seconds. How will I know I am tuned to the weather band? When you select the weather band, the “WB” icon will appear on the display panel, along with the current channel indication. Press the SEEK/TUNE/TRK |<< or >>| buttons (13, 14) to tune to each of the seven channels until you find the weather band station broadcasting in your area. NOAA Weather Alert The Weather Alert function adds an additional level of user safety by automatically switching from the current function mode to weather band mode for a minimum of 60 seconds if a NOAA warning tone (1050 Hz) is received/detected. If no additional warning tone is received for 60 seconds, the unit will switch back to the last known function mode. The Weather Alert function can be turned “on” or “off” by the Audio/Menu key, as described on page three. When “ON” (default), the Weather Alert icon appears in the display and the weather tuner remains active, even when the radio is turned off (as long as the power is still applied to the radio). If a weather alert is issued, the radio will turn on and play the announcement for 60 seconds, then turn back off and revert to weather alert monitor mode. If the Weather Alert function is set to “OFF”, no Weather Alert icon appears in the display. The radio will not respond to any weather alerts when it is off and will not automatically switch to the weather band if an alert is issued. NOTE: If the unit is programmed for European operation, the WB function will be disabled. JHD40BT MP3/WMA OPERATION Installing a USB Device Insert your USB thumb drive into the USB connector routed from the rear of the radio. The unit will automatically search for MP3 and WMA files on the device and begin playback. You can access USB mode from any other mode by pressing the MODE button (4). WARNING: Do not remove the device when USB PLAY mode is active. Press MODE (4) to change to another mode before removing the device 20 JHD40BT VOL + UP 1/ 17 MUTE AUDIO MENU 2/ RPT 3/ INT BAND SEARCH 16 SEEK /TUNE /TRK INFO ENTER 4/ RDM SEEK /TUNE /TRK DOWN VOL - 5/ 6/ DISP SCROLL 12 EQ LOUD 11 AS/PS 15 MODE Controlling Playback Pause/Play Press the 1 >/|| button (5) to suspend playback. Press the 1 >/|| button again to resume play. Track Select Press the SEEK/TUNE/TRK >>| (14) or |<< (13) button for less than one second to advance to the next file, or press and hold to fast forward or fast reverse. Playback begins when the button is released. Repeat (RPT) Press the 2 RPT button (6) to repeatedly play the current file. Press 2 RPT again to repeat all songs in the current folder. Press 2 RPT a third time to resume normal playback. 7 2a 13 2b 18 14 10 9 19 Intro Scan (INT) MP3/WMA File Requirements Press the 3 INT button (7) once to play the first 10 seconds of each file in the current folder. When the desired file is reached, press 3 INT again to end the scan and play the selected file. This unit can play MP3 (MPEG1, 2, 2.5 Audio Layer 2/3) and WMA (version 7/8/9). Random (RDM) Media Requirements Press the 4 RDM button (8) to randomly play all files in the current folder. Press 4 RDM again to resume normal playback. The following formats are available for the media used in this unit. The maximum number of characters used for file name including the delimiter (".") and three-character extension are indicated in parentheses. • • • • Navigating Folders Press the 5 button (9) to move to the previous folder and begin playback of the first song in the folder. Press the 6 button (10) to advance to the next folder and begin playback of the first song in the folder. ISO 9660 Level 1 (11 characters) ISO 9660 Level 2 (31 characters) Joliet (31 characters) Romeo (31 characters) Alternate Display Information The media reproducible on this unit has the following limitations: • • • Press the DISP/SCROLL button (12) to change the display information from file name default display to Artist/Song Title double line display mode. Maximum number of nested folders: 8 Maximum number of files per device: 999 Maximum number of folders per device: 99 MP3/WMA Directory Search 1. 2. Use the following settings when compressing audio data in MP3 data with the MP3 encoder. • • • Transfer bit rate: 32 - 320 kbps Sampling frequency • MPEG1: 32/44.1/48 KHz • MPEG2:16/22.05/24 KHz • MPEG2.5: 8/11.025/12KHz • WMA: 22/32/44/48KHz Maximum file/directory name: 64 bytes 3. 4. 5. 6. 7. ID3 Support This unit supports ID3 tag versions 1.0, 1.1, 2.0 and 2.3 (Max 32 bytes). Press the BAND/SEARCH button (16) to enter directory search mode. The LCD will display the folder list for the current directory. Press the BAND/SEARCH button to view the folder directory list. Navigate the folder list by pressing the VOL +/- buttons (2). Press the INFO/ENTER button to select a folder. The LCD will display the list of files within that folder. Navigate the file list by pressing the VOL +/- buttons. Press the INFO/ENTER button to select a file. Use the AS/PS button (15) to reverse navigate the list. JHD40BT BLUETOOTH OPERATION The JHD40BT includes built-in Bluetooth technology that allows you to connect this head unit to Bluetooth devices for streaming audio playback. Use SEEK/TUNE/TRK to Navigate the List Press ENTER Press ENTER BT Device Device 1 Device 2 Device 3 Device 4 Device 5 About Bluetooth Technology Bluetooth is a short-range wireless radio connectivity technology developed as a cable replacement for various electronic devices. Bluetooth operates in 2.4 GHz frequency range and transmits voice and data at speeds up to 1 megabit per second. Bluetooth was launched by a special interest group (SIG) comprised of Ericsson Inc., Intel Corp., Nokia Corp., Toshiba and IBM in 1998, and it is currently developed by nearly 2,000 companies worldwide. The Bluetooth word mark and logos are owned by the Bluetooth SIG, Inc. and any use of such marks is under license. Other trademarks and trade names are those of their respective owners. Device 1 ... ... Bluetooth Menu Options ... Device 5 NOTE: Please note that some BT menu options are only available while the unit is in BT Audio mode. Press and hold the AUDIO/MENU button (3) to enter menu adjustment mode. Repeatedly press the VOL +/- buttons (2) to access the “Bluetooth On/Off” menu function. Press the INFO/ ENTER button (18) to turn the Bluetooth function On or Off. The following menu options are available when the unit is in Bluetooth mode: • • • Lock/Unlock Disconnect Delete Pairing a Bluetooth Device Before you begin, consult the owner’s manual for the Bluetooth device you want to pair with the JHD40BT. Bluetooth Pair : Press the INFO/ENTER button to begin pairing with a Bluetooth enabled device is pairing mode. Bluetooth Device: Press the INFO/ENTER button to view a list of previously paired mobile phone device models. Press the SEEK/TUNE/TRK buttons (13, 14) to view devices from the list. You cannot delete a device that is actively connected. Press the INFO/ENTER button to select the device. Press the SEEK/TUNE/TRK buttons to choose Lock/Unlock, Disconnect or Delete for this device. • Lock/Unlock: The JHD40BT can store up to 5 devices for BT connection. The devices are stored in FIFO (First In First Out) order. To prevent a device from being bumped from the list when more than 5 devices are used, you must lock the device. To Lock/Unlock a device, press the INFO/ENTER button to display/change the • Lock/Unlock Disconnect Delete 1. 2. 3. 4. Locked ( ) or Unlocked ( ) icon. Disconnect: To disconnect a paired device, press the INFO/ENTER button to temporarily remove the BT link. The link can be re-established through your phone menu by selecting the JHD40BT for connection. Delete: To delete a device from the list, press the INFO/ENTER button. Make sure the device is on and ready to receive a signal from the JHD40BT. With the JHD40BT in BT Audio mode, choose BT PAIR from the JHD40BT menu and press the INFO/ENTER button to select ON. The unit is waiting to connect to a mobile phone device. With the BT function of the mobile phone device turned on, search for a Bluetooth device. When the Bluetooth device has completed it’s search, the mobile phone will display the Bluetooth device name (JHD40BT). Select JHD40BT. The BT AUDIO icon ( ) on the radio LCD will display. Enter the pairing password (0000), if requested. After connecting successfully, you are able to listen to music stored on your Bluetooth enabled device through the radio. Answering a Call When answering a call using the connected phone, BT AUDIO will pause. After hanging up from the call, BT AUDIO to continue on some phones. It may be necessary to press the play button to resume BT AUDIO. BT Audio (A2DP) The A2DP music is available for Bluetooth enabled phones when the phone is connected. To access Bluetooth mode and play songs stored on your phone, press the MODE button (4). While in BT mode 10 , the BT AUDIO icon ( ) illuminates on the it LCD. JHD40BT Selecting Tracks During playback, press the SEEK/TUNE/TRK |<< / >>| button (13/14) to play the previous or next track. Pausing Playback During playback, press the 1/>|| button (5) to pause the BT AUDIO player. “BT Audio Pause” will appear on the LCD. Press 1/>|| again to resume playback. If you change to another mode, the mobile phone audio will pause. Press the MODE button (4) to return to BT mode and resume mobile phone audio playback. NOTE: If a Bluetooth device is disconnected due to the power being turned off or if the device is disconnected inadvertently, the unit will automatically search for the matching BT mobile phone when the power is restored. 11 JHD40BT CARE AND MAINTENANCE • • • • • TROUBLESHOOTING Keep the product dry. If it does get wet, wipe it dry immediately. Liquids might contain minerals that can corrode the electronic circuits. Keep the product away from dust and dirt, which can cause premature wear of parts. Handle the product gently and carefully. Dropping it can damage circuit boards and cases, and can cause the product to work improperly. Wipe the product with a dampened cloth occasionally to keep it looking new. Do not use harsh chemicals, cleaning solvents, or strong detergents to clean the product. Use and store the product only in normal temperature environments. High temperature can shorten the life of electronic devices, damage batteries, and distort or melt plastic parts. Symptom No power The most common source of noise in reception is the ignition system. This is a result of the radio being placed close to the ignition system (engine). This type of noise can be easily detected because it will vary in intensity of pitch with the speed of the engine. Usually, the ignition noise can be suppressed considerably by using a radio suppression type high voltage ignition wire and suppressor resistor in the ignition system. (Most vessels employ this wire and resistor but it may be necessary to check them for correct operation.) Another method of suppression is the use of additional noise suppressors. These can be obtained from most CB/A radio or electronic supply shops. Interference Radio reception in a moving environment is very different from reception in a stationary environment (home). It is very important to understand the difference. AM reception will deteriorate when passing under a bridge or when passing under high voltage lines. Although AM is subject to environmental noise, it has the ability to be received at great distance. This is because broadcasting signals follow the curvature of the earth and are reflected back by the upper atmosphere. 12 Solution The vessel’s accessory switch is not on If the power supply is properly connected to the vessel’s accessory terminal, switch the ignition key to “ACC”. Fuse is blown Replace the fuse. Volume is too low Adjust volume to audible level. Wiring is not properly connected Check wiring connections. The operation keys do not work Built-in microcomputer is not operating properly due to noise Press the reset button (19). Cannot tune to radio station, auto-seek does not work Antenna cable is not connected Insert the antenna cable firmly. Signals are too weak Select a station manually. No sound Ignition Cause JHD40BT SPECIFICATIONS FM Radio Frequency Coverage (USA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87.5 to 107.9 MHz Frequency Coverage (Europe) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87.5 to 108 MHz Sensitivity (S/N=30dB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4µV Image Rejection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . > 45 dB Stereo Separation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . > 25 dB AM/MW Frequency Range (USA). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 530-1710 kHz Frequency Range (Europe). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 522-1620 kHz Sensitivity (S/N=20dB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 dB General Operating Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .DC 12 Volts Grounding System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Negative Ground Speaker Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-8 ohms per channel Tone Controls: Bass (at 100 Hz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±14 dB Treble (at 10 kHz). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±13 dB Power Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40W x 4 Fuse Rating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 Ampere (max.) Chassis Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182(L) x 52.2(W) x 173(H) Front Panel Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .188(L) x 58(W) x 21(H) 13 JHD40BT 14 ASA Electronics Corporation www.asaelectronics.com www.jensenmarinedirect.com ©2013 ASA Electronics Corporation v.031113
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