Jensen JWM30, Инструкция по установке и эксплуатации, Страница: 14 / 16

14
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.
Ignition
Interference
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.
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.
Symptom Solution
Radio will not turn
ON or No front
panel operation
Radio turns ON,
but no sound
Bluetooth Device
will not
connect/pair
Display is blank
No AM or FM
reception
No picture from
HDMI input pass
thru
Loss middle
channel audio
(dialogue audio)
from HDMI-IN
Try the reset button.
Check fuse.
Check 12V+ on accessory wire to radio (RED wire)
Check Ground.
Verify Volume, Fader/Balance, Mute controls are set
correctly (see owner's manual).
Try the reset button.
Verify proper speaker selection.
Verify proper speaker connections.
Check for shorts or open circuits on speaker wires.
Turn unit off and on to reset the display.
Ÿ
If short on “A” channel, “B & C” channels will continue to
function.
Ÿ
If short on “B and/or C” channels, “A” channel will continue
to function.
Make sure no devices are already connected. Disconnect any
connected devices.
On your smart device, turn the Bluetooth off and on and try
again.
Verify you are tuned to a valid station.
Check your antenna connection on rear of stereo.
Try a different antenna.
Make sure the HDMI cable is routed from the HDMI output to
the input on the television.
Made sure audio format is set to Dolby Digital, PCB or Stereo.
Try the reset button.
JWM
30
Unit does not
respond to Remote
Control
Verify that you have a clear line of sight for the IR signal.
Check the Remote Control batteries.
Try the reset button.