JHD1120
AM/FM/WB/AUX-IN Heavy Duty Radio
Installation and Operation Manual
Guide d’installation et d’opération
AS/PS
DN
UP
PTY
INFO
MENU
ENTER
AM 1
FM 2
SAT 3
iPod DISC
WB M P3
ST PS TITLE AR TISTCH. NA MECA T MEN U
LD COMPOSERR PT IN TRDM ALARMSLEEP
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40W x 4
JHD1120
JHD1120
INTRODUCTION
System Features
Content List
Features of the Jensen JHD1120 mobile audio system include:
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Jensen Heavy Duty Radio
Hardware Kit
15AMP Fuse
Installation Manual
Quick reference Guide
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10 Character Alpha-Numeric Segmented LCD
AM/FM US/EURO Tuner with 30 Presets (12 AM, 18 FM)
RBDS (Radio Broadcast Data Service) with PTY Search
Weatherband Tuner
Mute
Pre-set Equalizer - 5 settings (Flat, Rock, Pop, Classical, User)
Electronic Bass, Treble, Balance and Fader Controls
Output Power 40W x 4
HARDWARE KIT CONTENTS
Clock 12/24 Hour Selectable
IR Wireless Remote Control Ready (sold separately)
2-Wire Power with Non-Volatile Memory and Clock/Time Support
Auxiliary Audio Input (Front 3.5mm Stereo Jack)
FLANGE NUTS
MOUNTING STRAP
DIN SLEEVE
REMOVAL TOOL
MOUNTING BUSHING
MOUNTING SCREW
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JHD1120
SAFETY INFORMATION
When Driving
Keep the volume level Iow enough to be aware of the road and traffic conditions.
When Washing Your Vehicle
Do not expose the product to water or excessive moisture. Moisture can cause electrical
shorts, fire or other damage.
When Parked
Parking in direct sunlight can produce very high temperatures inside your vehicle. Give the
interior a chance to cool down before starting playback.
Use the Proper Power Supply
This product is designed to operate with a 12 volt DC negative ground battery system.
WARNING:
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TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS
EQUIPMENT TO RAIN OR MOISTURE.
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TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK AND ANNOYING
INTERFERENCE, USE ONLY THE RECOMMENDED ACCESSORIES.
2
JHD1120
INSTALLATION
This unit is designed for installation in vehicle cabs with an existing 1-DIN radio opening. In
many cases, a special installation kit will be required to mount the radio to the dashboard. See
the dealer where the radio was purchased for kit availability. Always check the kit application
before purchasing to make sure the kit works with your vehicle.
problem is corrected. Once proper operation is achieved, turn the accessory switch off
and proceed with final mounting of the chassis.
7. Carefully slide the radio into the mounting sleeve making sure it is right-side-up until it is
fully seated and the spring clips lock it into place.
8. Attach one end of the
Before You Begin
perforated support strap
Dashboard
1. Disconnect Battery
(supplied) to the screw
Before you begin, always disconnect the battery negative terminal.
2. Remove Transport Screws
stud on the rear of the
chassis using the hex nut
provided. Fasten the
other end of the
perforated strap to a
secure part of the
dashboard either above
or below the radio using
the screw and plain
washer provided. Bend
the strap, as necessary,
to position it. Some
Support Strap
Screw Stud
Plain Washer
Important Notes
Screw (5 x 25mm)
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Before final installation, test the wiring connections to make sure the unit is connected
properly and the system works.
Use only the parts included with the unit to ensure proper installation. The use of
unauthorized parts can cause malfunctions.
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 during
a sudden or emergency stop.
If the installation angle exceeds 30º from horizontal, the unit might not give optimum
performance.
Avoid installing the unit where it will be subject to high temperatures from direct sunlight,
hot air, or from a heater, or subject to excessive dust, dirt or vibration.
Rubber Bushing
Hex Nut (5mm)
vehicle installations
provide cavity for rear
support. In these applications, place the rubber bushing over the screw stud and insert
the radio.
CAUTION: The perforated rear support strap or rear rubber mounting bushing must
be used in the installation of the radio. Installation without either may result in
damage to the radio or the mounting surface and void the manufacturer’s warranty.
9. Test radio operation by referring to the operating instructions for the unit.
DIN Front Mount
1. Slide the mounting sleeve off of the chas-
sis if it has not already been removed. If it
is locked into position, use the removal
keys (supplied) to disengage it. The
removal keys are depicted in “Removing
the Unit” on page 3.
2. Check the dashboard opening size by
sliding the mounting sleeve into it. If the
opening is not large enough, carefully cut
or file as necessary until the sleeve easily
slides into the opening. Do not force the
sleeve into the opening or cause it to bend
or bow. Check that there will be sufficient
Dashboard
Bend Tabs
Screw Stud
182
Removing the Unit
To remove the radio after
Sleeve
53
installation, remove the plastic end
caps, insert the removal keys
straight back until they click, and
then pull the radio out. If removal
keys are inserted at an angle, they
will not lock properly to release the
unit.
Removal Key
Reconnect Battery
space behind the dashboard for the radio chassis.
3. Locate the series of bend tabs along the top, bottom and sides of the mounting sleeve.
With the sleeve fully inserted into the dashboard opening, bend as many of the tabs
outward as necessary to firmly secure the sleeve to the dashboard.
When wiring is complete, reconnect
the battery negative terminal.
Removal Key
4. Place the radio in front of the dashboard opening so the wiring can be brought through the
mounting sleeve.
5. Follow the wiring diagram carefully and make certain all connections are secure and
insulated with crimp connectors or electrical tape to ensure proper operation.
6. 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
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JHD1120
WIRING
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JHD1120
BASIC OPERATION
Mute
21
19
18
14
Press the MUTE button (17) to mute the audio output. Press MUTE again to restore the audio
output to the previous level.
Mode
AS/PS
3
DN
UP
Press the MODE button (4) to select a different mode of operation, as indicated on the display
panel. Available modes include the following: Tuner (AM/FM) > Auxiliary. Tuner is the default
source when a prior source is no longer available.
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PTY
INFO
16
MENU
ENTER
12
AM 1
FM 2
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20
Reset
40W x 4
JHD1120
The reset button should be activated for the following reasons:
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initial installation of the unit when all wiring is completed
function buttons do not operate
error symbol on the display
11 17
8
6
2
4
15
7
9
10
13
5
Use a ball point pen or thin metal object to press the RESET button (20). This may be
necessary should the unit display an error code.
Power On/Off
Audio Menu
Press the rotary encoder POWER button (1) to turn the unit on or off. The unit will resume at
Press the AUDIO button (3) to access the audio menu. You can navigate through the audio
menu items by pressing the AUDIO button repeatedly. Once the desired menu item appears
on the display, adjust that option by turning the rotary encoder (1) within 5 seconds. The unit
will automatically exit the audio menu after five seconds of inactivity. The following menu items
can be adjusted.
the last mode selected (Tuner, Auxiliary, etc.).
POWER
Bass Level
Use the rotary encoder (1) to adjust the Bass level range from “-7” to “+7”.
Treble Level
Use the rotary encoder (1) to adjust the Treble level range from “-7” to “+7”.
Balance
Adjusting Balance controls the relative level between the left and right speakers in each pair.
Use the rotary encoder (1) to adjust the Balance between the left and right speakers from “L
12” to “R12”.
Fader
Volume Control
Adjusting Fade controls the relative level between the front and rear speaker pairs. Use the
rotary encoder (1) to adjust the Fader between the rear and front speakers from “R12” to “F12”.
To increase the volume, turn the rotary encoder (1) to the right. To decrease the volume, turn
the rotary encoder to the left.
The maximum volume setting is 40.
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JHD1120
System Menu
1. Press and hold the PTY/MENU button (2) for more than 2 seconds to enter the system
menu. The first menu item, “KEYBEEP”, will appear on the display.
2. Press the TUNE/SEEK |<< / >>| (18, 19) button repeatedly to navigate the system menu.
3. Press the INFO/ENTER button (16) to select the desired item.
4. Press the INFO/ENTER button again to adjust the selected menu item.
The following items can be adjusted:
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KEYBEEP (Clk (click) / Bep (beep) / Off): Turn the audible beep On/Off (heard when
functions/buttons are selected).
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LCDLITE (1-10): Adjust LCD brightness.
TUNING (USA / EURO): Set frequency spacing for various regions.
P-- CLOCK (1-10 / Off)
CLK FMT (12Hour / 24Hour): Select 12 or 24 hour display mode.
CLK (HH : MM): Set clock.
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Press the INFO/ENTER button (16) to view the clock set screen.
Press the INFO/ENTER button to move to the next digit.
Press the TUNE/SEEK |<< / >>| (18, 19) buttons to adjust the selected digit.
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PREONLY (On / Off): Turn preset-only tuning on/off.
BAT ALRM (Off / On): When ON, radio will alert when vehicle battery voltage is below
10.8 VDC.
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BAT OFF (Off / On): When ON, radio will automatically turn off when vehicle battery
voltage is below 10.8 VDC.
RESET ALL <ENTER>: Press the INFO/ENTER button (16) to return the EEPROM to
factory default set up values.
Equalizer
Press the EQ/LOUD button (11) to choose one of the following pre-defined bass and treble
curves: USER > FLAT > ROCK > CLAS(SICAL) > POP.
Loudness
Press and hold the EQ/LOUD button (11) to toggle 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 on the front panel (17).
2. Press the MODE button (4) to select “Auxiliary” mode.
3. Press MODE again to cancel “Auxiliary” mode and go to the next mode.
Liquid Crystal Display (LCD)
The current frequency and activated functions are shown on the LCD panel (21).
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 characters on the LCD may
decrease slightly. The LCD display will return to normal when the temperature increases
to a normal range.
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JHD1120
Setting the Clock
To set the clock to display the current time, turn the vehicle ignition on and turn the radio on.
Enter the system menu and adjust the clock by selecting the “CLK” menu item.
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Press the INFO/ENTER button (16) to view the clock set screen.
Press the TUNE/SEEK |<< / >>| (18, 19) buttons to adjust the selected digit.
Press the INFO/ENTER button to move to the next digit.
Press the TUNE/SEEK |<< / >>| (18, 19) buttons to adjust the selected digit.
When no adjustment is made for five seconds, the time will become set and normal operation
will resume.
Display Modes
Press the T/F button (12) to switch between LCD clock display and source display.
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JHD1120
TUNER OPERATION
Automatically Store / Preset Scan (AS/PS)
Automatically Store
21
19
18
14
Select an AM or FM band. Press and hold the AS/PS button (14) for more than 2 seconds to
automatically select 18 strong stations (12 for AM). “FM STORE” or “AM STORE” appears on
the screen and the new stations replace any stations already stored.
AS/PS
3
DN
UP
Preset Scan
1
PTY
INFO
Select a band. Press AS/PS (14) to scan stations stored in the current band. The unit will
pause for 5 seconds at each preset station. Press AS/PS again to stop scanning when the
desired station is reached.
16
MENU
ENTER
12
AM 1
FM 2
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20
40W x 4
JHD1120
RBDS Operation
This unit is equipped to display RBDS (Radio Broadcast Data Service) information when
broadcast by the radio station.
11 17
8
6
2
4
15
7
9
10
13
5
NOTE: Radio stations broadcasting RBDS may not be available in your listening area.
Select a Band
In FM radio mode, press the PTY/MENU button (2) to list the following Program Type (PTY)
options: ANY / News / Information / Sports / Talk / Rock / Classic Rock / Adult Hits / Soft Rock /
Top 40 / Country / Oldies / Soft / Nostalgia / Jazz / Classical / Rhythm and Blues / Soft Rhythm
& Blues / Foreign Language / Religious Music / Religious Talk / Personality / Public / College /
Weather / Emergency Test / ALARM! ALARM!
Press the BAND/WB button (15) to change between three FM bands and two AM bands.
Press and hold the BAND/WB button to access the Weatherband (WB).
Manual Tuning
Press the TUNE/SEEK >>| or |<< buttons (19, 18) to seek stations up/down step by step.
To search for stations in a PTY category:
Auto Seek Tuning
Press and hold the TUNE/SEEK >>| or |<< buttons (19, 18) to automatically seek the next or
previous strong station.
1. Press the PTY/MENU button (2) to view the current PTY category.
2. Press the TUNE/SEEK >>| or |<< buttons (19, 18) to move through the list of available
categories and select the program type you wish to search.
3. After selecting the desired PTY, press the PTY/MENU button (2) to search the band for
broadcasts of this type. “PTY Search” is displayed while the tuner is searching.
NOTE: Seek tuning is not available for weather band channels. Use the up or down
tuning buttons to manually select any of the seven available weather band channels.
NOTE: Performing a PTY search on “ANY” will Seek Tune and stop on any station
broadcasting RBDS, regardless of the program type.
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 on the LCD.
Recall a Station
Select a band (if needed). Press a preset button (5-10) to select the corresponding stored
station.
NOTE: Preset buttons are pre-assigned frequencies in weather band mode.
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JHD1120
Weather Band Operation
What is the NOAA Weather Radio/Weatheradio Canada?
NOAA (National Oceanic and Atmospheric Administration) is a nationwide system that
broadcasts local weather emergency information 24 hours a day via the National Weather
Service (NWS) network. The U.S. network has more than 530 stations covering the 50 states
as well as the adjacent costal 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. A similar system is available in Canada under the Weatheradio
Canada service administered by Environment Canada.
Tuning to Weatherband
Press and hold the BAND/WB button (15) to access the Weatherband. The indication "WB"
will appear on the display panel, along with the current number and channel indication: "WB-1",
“WB-2", "WB-3", "WB-4", "WB-5", "WB-6" or "WB-7". The seven frequencies are shown in the
following table:
Table 1: WB Frequencies
Frequency (MHz)
Preset
162.400
162.425
162.450
162.475
162.500
162.525
162.550
2
4
5
3
6
-
1
The above table also shows which preset button will access the frequency. Note that one
frequency cannot be accessed using a preset button. The frequency can only be reached
using the tuning controls.
Use the TUNE/SEEK >>| or |<< buttons (19, 18) or the preset buttons to tune to each of the
seven channels until you find the weatherband station broadcasting in your area.
How many stations can I expect to receive?
Since the broadcasts are local weather and information, the transmission power is usually very
low (much less than standard AM or FM stations) so you will usually receive only one station
unless you are on the edge of two or more broadcast signals. The most you will receive will be
two or three, and that is rare.
Is it possible I won't receive any stations?
Depending on where you are located, there is a possibility you will receive only a very weak
signal or none at all. Also, similar to AM and FM signals, weatherband signals are subject to
surrounding conditions, weather, obstructions of the signal by hills or mountains, etc.
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JHD1120
CARE AND MAINTENANCE
TROUBLESHOOTING
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Keep the product dry. If it does get wet, wipe it dry immediately. Liquids might contain
minerals that can corrode the electronic circuits.
Symptom
Cause
Solution
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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.
No power
The vehicle’s accessory
switch is not on
If the power supply is properly
connected to the vehicle’s acces-
sory terminal, switch the ignition
key to “ACC” or “Run”
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•
The fuse is blown
Replace the fuse
No sound
Volume is too low or system Adjust volume to audible level
is muted
Wiring is not properly con-
nected
Check wiring connections
Ignition
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.
The operation keys do
not work
The built-in microcomputer
is not operating properly
due to noise
Press the RESET button
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 vehicles 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 professional mobile electronics retailers.
Cannot tune to radio sta- The antenna cable is not
Check antenna cable
tion, auto-seek does not
work
connected
The signals are too weak
Select a station manually
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 received at great
distance. This is because broadcasting signals follow the curvature of the earth and are
reflected back by the upper atmosphere.
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JHD1120
SPECIFICATIONS
FM Radio
Frequency Coverage (USA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87.5 to 107.9 MHz
Frequency Coverage (Europe) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87.5 to 108 MHz
Sensitivity (S/N=30dB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2µV
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) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 dB
General
Operating Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .DC 12 Volts
Grounding System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Negative Ground
Speaker Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-8 ohms per channel
Tone Controls:
Bass (at 100 Hz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . : ±10 dB
Treble (at 10 kHz). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . : ±10dB
Power Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40W x 4
Idle/Standby Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75mA
Current Drain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 Ampere (max.)
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175 (W) x 175 (D) x 50 (H)
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ASA Electronics Corporation
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