39
English
NX702E
15. TROUBLE SHOOTING
GENERAL
Problem Cause Measure
Unit can not
power on.
Unit fuse blown. Replace with new fuse of correct rating.
Car battery fuse blown. Replace with new fuse of correct rating.
ACC power is turn o Turn on the ACC
Unit can not
power on.
Nothing happens
when buttons are
pressed.
Display is not
accurate.
The microprocessor has
malfunctioned due to noise, etc.
Turn o the power and press the [RESET]
button with a thin rod.
Note:
RESET
RESET
Remote control
does not work.
Battery depleted. Change the battery.
Battery installed incorrectly. Install the battery correctly.
No/low audio
output
Improper audio output connection. Check wiring and correct.
Volume set too low. Increase volume level.
Speakers damaged. Replace speakers.
Heavily biased volume balance. Adjust the channel balance to center position.
Speaker wiring is in contact with
metal part of car.
Insulate all speaker wiring connections.
Poor sound quality
or distortion
Non-standard disc used. Use a standard disc.
Speaker power rating does not
match unit.
Replace speakers.
Wrong connections. Check wiring and correct.
Speaker is shorted. Check wiring and correct.
Unit resets itself
when engine is o.
Incorrect connection between
ACC and Battery.
Check wiring and correct.
Battery voltage is too low Charging the battery, or replace the new battery.
The display is
dark.
The brightness control is too low. Adjust the brightness properly.
The operating condition is not
good.
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 headlight of the vehicle is lit.
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.)
There are red,
green, and blue
points in display
____________________
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%).
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