Care And Maintenance; Troubleshooting - Jensen JWM452 Installation And Owner's Manual

CARE AND MAINTENANCE

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.
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.
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 receive at great distance. This is because broadcasting signals
follow the curvature of the earth and are reflected back by the upper atmosphere.

TROUBLESHOOTING

Symptom Solution
Try the reset button.
Radio will not turn
ON or No front
Check fuse.
panel operation
Check 12V+ on accessory wire to radio (RED wire)
Check Ground.
Verify Volume, Fader/Balance, Mute controls are set
Radio turns ON,
correctly (see owner's manual).
but no sound
Try the reset button.
Verify proper speaker selection.
Verify proper speaker connections.
Check for shorts or open circuits on speaker wires.
If short on "A" channel, "B & C" channels will continue to
Ÿ
function.
If short on "B and/or C" channels, "A" channel will continue
Ÿ
to function.
Display is blank
Turn unit off and on to reset the display.
Bluetooth Device Make sure no devices are already connected. Disconnect any
will not connected devices.
connect/pair On your smart device, turn the Bluetooth off and on and try
again.
CD/DVD does not
load fully
Make sure the disc is a compatible disc.
Check to make sure disc is inserted correctly.
CD/DVD does not
load fully
Verify disc is free from dirt, scratches, etc.
Check with factory Cds.
Check factory original CDs for compatibility warnings (due to
various copy-protection, multimedia content, etc.).
Verify you are tuned to a valid station.
No AM or FM
reception Check your antenna connection on rear of stereo.
Try a different antenna
DVD plays sound Make sure the HDMI cable is routed from the HDMI output to
but no video the input on the television.
Verify that you have a clear line of sight for the IR signal.
Unit does not
respond to Check the batteries.
Remote Control
23
JWM452