JHD905
Owner’s Manual
JENSEN
MUTE
AM/FM
DISP
WB
AUX
TIMER
JENSEN HEAVY DUTY
VOL+
AUDIO
MENU
TUN
TUN
+
FM
VOL-
SEEK
+
SEEK
AM/FM/WB RECEIVER
JHD905
1
5
2
3
4
6
JHD905
Package Contents
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JHD905 Radio
Radio Mounting Bracket
Three (3) 10-16 x 3/4” Stainless Steel PPH Screws
Three (3) 10-32 x 5/8” Stainless Steel PPH Screws
Three (3) 10-32 Stainless Steel Hex Nuts
Three (3) #10 Stainless Steel Washers
Four (4) M4 x .7 x 8MM Stainless Steel Hex Screws with Captivated Washers
Wiring Harness
Auxiliary Input Patch Cord
Owner’s Manual
Owner’s Manual
JHD905
JHD905 Radio
Thank You!
Thank you for choosing
a
Jensen product. We hope you will find the instructions in this owner’s
If you take few minutes to look through it, you’ll learn how to use all
the features of your new Jensen receiver for maximum enjoyment.
manual clear and easy to follow
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a
System Features
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2
4
Installation
Wiring
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6
Basic Operation.
Tuner Operation
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7
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9
Weather Band Operation
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10
11
12
JHD905
Troubleshooting
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Specifications
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Owner’s Manual
JENSEN
Features
Features of the Jensen JHD905 mobile audio system include:
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Waterproof
JENSEN
uV and Corrosion Resistant
Electronic US/Euro AM/FM Tuner
30 Programmable Presets (12 AM, 18 FM)
MUTE
DISP
AM/FM
AUX
WB
TIMER
Non-Volatile Memory for User Settings and Preset Memories
7-Channel NOAA Weather Band
Weather Alert
MUTE
DISP
AM/FM
AUX
WB
JENSEN HEAVY DUTY
TIMER
VOL+
AUDIO
MENU
TUN
TUN
+
FM
Auxiliary Audio Input
VOL-
JENSEN HEAVY DUTY
2-Channel Amplified Audio Output
Backlit Controls with Selectable Illumination Color
Daylight Readable Display
SEEK
SEEK
+
VOL+
AM/FM/WB RECEIVER
JHD905
Clock with 30-day Backup Power
Work Timer
1
2
3
4
5
6
N
I
X
U
A
Audible Beep Confirmation Tone
AUDIO
MENU
TUN
TUN
+
2
VOL-
SEEK
SEEK
+
AM/FM/WB RECEIVER
JHD905
1
5
2
3
4
6
Radio
Mounting Bracket
N
I
X
U
A
Self-Tapping
Screws (3)
Washers
Machine Screws
with Nuts (3)
Auxiliary Input
Patch Cord
M4 Machine
Screws (4)
Wiring Harness
3
JHD905
Installation
Mounting the Bracket
Two options are provided for mounting the bracket (self-tapping screws or machine screws with nuts)
to ensure a mounting option ideal for your mounting location. Avoid obstructing airflow to the rear
cooling fins on the radio.
NOTE: Mounting holes should be drilled to 7/32”. Before drilling the mounting holes, make sure
the area behind the panel where the holes are desired is clear of wires and fuel, vacuum and or
brake lines.
Mounting Stack
Mounting machine screw
Bracket metal
Vehicle mounting surface
Washer
Nut
Self-Tapping
Screws
(Hole size 7/32")
Machine Screws
with Nuts
(Hole size 7/32")
Attaching the Radio
Once the bracket is securely mounted, use the four included M4 machine screws to fasten the bracket
to the back of the radio. Alternately, the radio can be mounted directly to the instrument panel if access
to the rear of the instrument panel is available.
CAUTION! Do not over tighten the 4 mounting screws. Hand tighten only.
Regular
Mounting
Overhead
Mounting
4
JHD905
Wiring
The wiring diagram depicts all the wiring connections required for proper operation of the unit.
Antenna Connector
(Black Wire)
9-Pin Connector
(Male)
NOTE: Do not connect the red wire
to a constant power connection. It
should be connected to a vehicle
connection with switched power,
such as IGN or ACC.
3A Fuse
+
Speaker
Left
(White)
Accessory
(Red)
Left Speaker -
(White/Black)
Ground
(Black)
+
Speaker
Right
(Gray)
Right
Speaker
(Gray/Black)
-
5
JHD905
Basic Operation
1. Power
Press the power button (1) momentarily to turn the unit on or off. This button is also used to access the
software version number. To briefly display the software version on the LCD, press and hold the power
button for more than five seconds.
2. Mute
Press MUTE (2) to silence the audio output in tuner, weather band or auxiliary input mode. When the
audio output is silenced, “MUTE” will appear in the display. If the mute feature is activated when the
unit is turned off, the volume will default to the programmed turn-on level when the unit is turned back
on.
3. Display
Press DISP (3) momentarily to toggle the LCD display between function mode (showing tuner,
auxiliary input or weather band information, depending on which mode is currently activated) and clock
mode (showing the time).
4. Liquid Crystal Display
The Liquid Crystal Display (LCD) panel (4) displays the frequency, time and activated functions.
Basic Operation
5a
2
4
3
6
1
JENSEN
7a
MUTE
DISP
AM/FM
AUX
WB
TIMER
JENSEN HEAVY DUTY
8a
VOL+
TIMER
AUDIO
MENU
AM
TUN
TUN
+
9
8b
VOL-
SEEK
+
SEEK
7b
AM/FM/WB RECEIVER
JHD905
1
2
3
4
5
6
5b
6
JHD905
5. Auxiliary Input Function
To connect a portable audio device (MP3 player, iPOD, etc.) to the JHD905, connect the headphone or
line level output of the device to the 1/8" auxiliary input jack of the JHD905 (5b) using the audio patch
cord (included). Press AUX (5a) to select auxiliary input mode.
6. Timer
Press TIMER (6) momentarily to directly access timer mode. Briefly press TIMER to start the timer
function, and the “TIMER” icon will flash in the display. Press TIMER again to stop the timer, and the
“TIMER” icon will remain in the display (without flashing). Press the button again briefly to resume the
timer, or press and hold it for three seconds to reset it to zero and to remove the “Timer” icon from the
display.
7. Volume
Briefly press VOL+ (7a) or VOL- (7b) to adjust the volume up or down one step. Press and hold VOL+
or VOL- for more than one second to continuously adjust the volume level until the button is released.
The current volume level (0 to 40) will appear in the display when the volume is adjusted, returning to
the default display three seconds after the adjustment is complete.
8. Setting the Clock
To set the clock to display the current time, press the DISP button (3) for more than three seconds to
enter clock setting mode, and the time will flash in the display. Press TUN- (8a) to adjust the hours or
TUN+ (8b) to adjust the minutes. When no adjustment is made for ten seconds, the time will be set and
normal operation will resume.
9. Audio and Menu Adjustment
Audio Adjustment
Press AUDIO/MENU (9) momentarily to step through the following audio adjustment options: Bass,
Treble and Balance (left to right). When the desired option appears in the display, press VOL+ (7a) or
VOL- (7b) to adjust that audio feature. When no adjustments have been made for three seconds, the
unit will resume normal operation.
Menu Adjustment
Press the AUDIO/MENU button (9) for more than three seconds to enter menu adjustment mode and
adjust any of the menu options. When the desired option appears in the display, press VOL+ (7a) or
VOL- (7b) to adjust that option. When no adjustments have been made for three seconds, the unit will
resume normal operation. The following menu options may be adjusted using this feature:
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Beep Confirm (On or Off) - Determines if a beep will be heard each time a button is pressed.
Operation Region (USA or Euro) - Selects the appropriate operating region.
Clock Display (12 or 24) - Selects a 12-hour or 24-hour clock display.
Display Brightness (Low, Mid or High) - Determines brightness level of the display.
Backlight Color (Amber or Green) - Determines the backlight color of the unit.
Turn On Volume (0-40) - Selects desired volume level for the unit to assume when turned on.
WB Alert (On or Off) - Determines if the weather band alert feature is activated.
7
JHD905
Tuner Operation
10. Select a Band
Press AM/FM (10) momentarily to directly access tuner mode from any other function mode. When the
unit is already in tuner mode, briefly press AM/FM to change between two AM bands (AM1 and AM2)
and three FM bands (FM1, FM2 and FM3).
NOTE: If the unit is programmed for European operation, the sequence will be MW1, MW2,
FM1, FM2 and FM3.
11. Manual Tuning
Press TUN- (11a) or TUN+ (11b) momentarily to tune the frequency one step higher or lower. Press
and hold TUN+ or TUN- for more than one second to tune continuously in the selected direction until
the button is released.
12. Seek Tuning
Press SEEK- (12a) or SEEK+ (12b) momentarily to automatically tune the frequency down or up to
the next strong station.
Radio and Weather Band Operation
10
14
JENSEN
MUTE
DISP
AM/FM
AUX
WB
TIMER
JENSEN HEAVY DUTY
11a
11b
VOL+
AUDIO
MENU
AM
TUN
TUN
+
VOL-
CH2
SEEK
+
SEEK
AM/FM/WB RECEIVER
JHD905
1
5
2
3
4
6
12a
12b
13
8
JHD905
13. Preset Stations
Six numbered preset buttons (13) store and recall stations for each AM and FM band. To store a
station, select a band (if needed) and then select a station. Hold a preset button for three seconds. The
current station will be stored, and the corresponding preset number will appear in the display. To recall
a station, select a band and then press a preset button. The unit will automatically tune to the
corresponding stored station.
NOTE: Preset buttons recall channels 1-6 on weather band and cannot be set by the user.
Weather Band Operation
14. Accessing the Weather Band
Press WB (14) to directly access the weather band mode from any other function mode.
What is the NOAA Weather Radio?
This 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 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: 162.400MHz (CH1), 162.425MHz (CH2),
162.450MHz (CH3), 162.475MHz (CH4), 162.500MHz (CH5), 162.525MHz (CH6) and 162.550MHz (CH7).
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 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 location, it’s possible you will 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 TUN+ (11b) or TUN- (11a) 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.
9
JHD905
Troubleshooting
Problem
Cause
Corrective Action
No power.
Vehicle ignition switch is not on If the power supply is connected to
the vehicle accessory circuits but
the engine is not moving, switch the
ignition key to “ACC”
The 3A fuse is blown
Replace the 3A fuse
No reception
Volume turned down too low
Adjust volume until sound is heard
Wiring not connected properly Check wiring connections
Antenna cable not connected Insert antenna cable firmly
Radio does not work
Volume too high or too Preset volume is set incorrectly Use the Menu adjustment (page 7)
low when the radio is
turned on
to change preset volume to desired
level
LCD display is dark and Radio too hot
difficult to read
Turn radio off and allow to cool
down
No WB function
Programmed to “European”
Program to “USA” (setup menu)
Weather alert does not Weather alert programmed to Program to “on” (setup menu)
function “off”
NOTE: Proper care and cleaning is essential to optimal operation. The JHD905 may be
cleaned with mild detergent/water mixture and a soft cloth to remove grease and grime. Do
not pressure wash directly on the radio.
10
JHD905
Specifications
General
Power Supply Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .DC 12 Volts, Negative Ground
Chassis Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131.6 (W) x 47.5 (D) x 86 (H)
Loading Impedance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 -8 ohms per channel
Tone Controls . . . . . . . . . . . . . . . . . . . . . . . . . . .Bass (at 100 Hz), ±10 dB; Treble (at 10 kHz), ±10 dB
Current Drain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 Ampere (max)
FM Tuner
Tuning Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87.5-108.0
FM Mono Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5uV
Stereo Separation @ 1 kHz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >25dB
AM Tuner
Tuning Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 522-1710
Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <30uV
Weather Band
Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <1uV
Amplifier
Total System Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Watts Maximum
Signal to Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >70dB
Specifications subject to change without notice.
NOTE: The manufacturer is not responsible for any radio or TV interference caused by
unauthorized modifications to this equipment. Such modifications could void the User’s
authority to operate the equipment.
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.
© 2007 ASA Electronics Corporation
v.071807
11
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