- 7 -
VRX575USB
TROUBLESHOOTING
1.
2.
3.
4.
1. NO POWER ON
NO POWER
No Power ON
- No power
- No operating the key
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
No Operating Tuner
- No operating radio
- Operating radio, No stopping SEEK & Bad receiving
condition
No Display
- No display the image
- No display the composite image
- No switch on LCD back light
5.
6.
7.
8.
9.
No Control Switch
- No operating remote control
- No switch on LED
- No display RGB image
No Operating CD/DVD
- No loading CD/DVD, No eject
- CD or DVD is loaded, ejected & No playing normally
No Operating iPod
- No operating iPod
- No change with iPod
No Operating Slide Mechanism
- No operating slide mechanism
General and DVD player
NO POWER
OK
NG
NG
NG
NG
NG
NG
NG
NG
OK
OK
OK
OK
OK
OK
Check
Emitter of Q40
(14V)
Problem extension filter box,
connector
Check
Collector of Q40
(12V)
Check
12V stabilization circuit
Q40, R23, R44, R315, R411
Check
the oscillation of
Y5
Check
RESET
normally
Check
out of Q54
Check
B/U DET
normally
Problem of
RESET circuit line,
Q17, U8, D1, D28
Check
12V stabilization circuit
Q40, R23, R44, R315, R411
Problem of
B/D_DET circuit line,
Q54, D53, R201
Check
ACC_CHK circuit
line normally
Confirm to
Y5, U5
Problem of
ACC_CHK circuit line,
Q1, Q28, D21, D3
Check
FR_DET circuit line
normally
Problem of
FR_DET circuit line,
J13, Q42, U5, R103
Check
the oscillation of
Y3
Confirm to
U5, writing software
NG
Problem of
of Y3, U5
Summary of Contents for VRX575USB
Page 5: ... 5 VRX575USB EXPLANATION OF IC uPD78F1165 Main system controller ...
Page 6: ... 6 VRX575USB ELECTRICAL CONNECTION 1 Wire Connection ...
Page 13: ... 13 VRX575USB EXPLODED VEIW PARTS LIST ...
Page 14: ... 14 VRX575USB ELECTRICAL PART LIST ...
Page 15: ... 15 VRX575USB ...
Page 16: ... 16 VRX575USB ...
Page 17: ... 17 VRX575USB ...
Page 18: ... 18 VRX575USB ...
Page 19: ... 19 VRX575USB ...
Page 20: ... 20 VRX575USB BLOCK DIAGRAM VRX 575USB Block Diagram ...
Page 21: ... 21 VRX575USB ...
Page 22: ... 22 VRX575USB ...
Page 23: ... 23 VRX575USB ...
Page 24: ... 24 VRX575USB ...
Page 25: ... 25 VRX575USB ...
Page 26: ... 26 VRX575USB ...
Page 27: ... 27 VRX575USB ...
Page 28: ... 28 VRX575USB ...
Page 29: ... 29 VRX575USB ...
Page 30: ... 30 VRX575USB ...
Page 31: ... 31 VRX575USB ...
Page 32: ... 32 VRX576USB ...
Page 33: ... 33 VRX575USB ...