Trouble Shooting - Clarion NX502E Owner's Manual

15. TROUBLE SHOOTING

GENERAL
Problem
Unit can not
power on.
Unit can not
power on.
Nothing happens
when buttons are
pressed.
Display is not
accurate.
Remote control
does not work.
No/low audio
output
Poor sound quality
or distortion
Unit resets itself
when engine is off.
The display is
dark.
There are red,
green, and blue
points in display
36
NX502E
Cause
Unit fuse blown.
Car battery fuse blown.
The microprocessor has
malfunctioned due to noise, etc.
Battery depleted.
Battery installed incorrectly.
Improper audio output connection. Check wiring and correct.
Volume set too low.
Speakers damaged.
Heavily biased volume balance.
Speaker wiring is in contact with
metal part of car.
Non-standard disc used.
Speaker power rating does not
match unit.
Wrong connections.
Speaker is shorted.
Incorrect connection between
ACC and Battery.
The brightness control is too low. Adjust the brightness properly.
The operating condition is not
good.
The headlight of the vehicle is lit.
____________________
Measure
Replace with new fuse of correct rating.
Replace with new fuse of correct rating.
Turn off the power and press the [RESET]
button with a thin rod.
Note:
Whenthe[RESET]buttonispressed,turnoff
thepower.*
*Whenthe[RESET]buttonispressed,
frequenciesofradiostations,titles,etc.stored
inmemoryarecleared.
Change the battery.
Install the battery correctly.
Increase volume level.
Replace speakers.
Adjust the channel balance to center position.
Insulate all speaker wiring connections.
Use a standard disc.
Replace speakers.
Check wiring and correct.
Check wiring and correct.
Check wiring and correct.
The temperature inside the vehicle may be 0°C
or lower. Set to an appropriate temperature
(25°C or so) and check it again.
The display is made dark at night to prevent
the glare (When the headlight of the vehicle is
lit in the daytime, the display gets dark.)
This is not a faiure, but a phenomenon peculiar
to a liquid crystal panel (The liquid crystal
panel is produced according to technology
with very high precision. Note that, though
there are effective pixels of 99.99% or more,
pixel missing or normally lit pixels account for
0.01%).