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TROUBLESHOOTING
1.
No Power ON
- No power
- No operating the key
2.
No Sound
- Power on, No sound all of source
- Power on, No sound SP only all of source
- Power on, No sound AMP only all of source
- Operating radio, No sound voice only of radio
- Operating CD/DVD, No sound only
- No operation visual sound
- Operating iPod voice, No sound only
- Operating USB voice, No sound only
3.
No Operating Tuner
- No operating radio
- Operating radio, No stopping SEEK & Bad receiving
condition
No Display
4.
- No display the image
- No display the composite image
- No switch on LCD back light
1. NO POWER ON
NO POWER
NO POWER
Check
NG
Emitter of Q40
(14V)
OK
NG
Check
Collector of Q40
(12V)
OK
NG
Check
the oscillation of
Y5
OK
NG
Check
out of Q54
OK
NG
Check
ACC_CHK circuit
line normally
OK
NG
Check
FR_DET circuit line
normally
OK
NG
Check
the oscillation of
Y3
OK
Confirm to
U5, writing software
Problem extension filter box,
connector
Check
12V stabilization circuit
Q40, R23, R44, R315, R411
Problem of
B/D_DET circuit line,
Q54, D53, R201
Problem of
ACC_CHK circuit line,
Q1, Q28, D21, D3
Problem of
FR_DET circuit line,
J13, Q42, U5, R103
Problem of
of Y3, U5
- 7 -
5.
No Control Switch
- No operating remote control
- No switch on LED
- No display RGB image
6.
No Operating CD/DVD
- No loading CD/DVD, No eject
- CD or DVD is loaded, ejected & No playing normally
7.
No Operating iPod
- No operating iPod
- No change with iPod
8.
No Operating Slide Mechanism
- No operating slide mechanism
9.
General and DVD player
NG
Check
RESET
normally
NG
Check
B/U DET
normally
Confirm to
Y5, U5
Problem of
RESET circuit line,
Q17, U8, D1, D28
Check
12V stabilization circuit
Q40, R23, R44, R315, R411
VRX575USB
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