
Samsung Electronics
4-5
Troubleshooting
4-1-2 No Output
Check MAIN PCB
FIC1 R2S15904 input and
output signal
Check all function
(CD/DVD, Tuner, AUX).
1
/
2
Check MAIN PCB
AIC1 Pin 23: Low Mute; High Normal
FIC1 Pin 24: 9V
Check AUX signal input and signal
pattern
Check MICOM IC "UIC1"
Pin 44: Low Normal, High Mute
Yes
No
Yes
No
Yes
No
No Output
Check MPEG PCB
Replace AAIC1
Check MAIN PCB
PT01 Pin 9: -24V and
Pin 10: +24V
Check SMPS stage
(All power source check)
Yes
No
Only CD/DVD/USB
All function fail
Input signal fail
Input fine but output fail
Refer to wave pattern
image of Fig. 4-3-1
and Fig. 4-3-2.
Содержание MM-G25
Страница 10: ...2 6 Samsung Electronics MEMO ...
Страница 34: ...3 6 Samsung Electronics MEMO ...
Страница 42: ...7 8 Samsung Electronics MEMO ...
Страница 45: ...Samsung Electronics 6 3 PCB Diagram 2 1 3 6 2 FRONT PCB Top BCW1 BCW2 BCW3 ...
Страница 47: ...Samsung Electronics 6 5 PCB Diagram 6 3 FRONT PCB Bottom IC1 BCW1 FVFD1 BCW3 BCW2 ...
Страница 48: ...6 6 Samsung Electronics PCB Diagram 6 4 TAPE PCB Top 1 3 2 JCON11 CON1 JCON10 ...
Страница 50: ...6 8 Samsung Electronics PCB Diagram 6 5 TAPE PCB Bottom JCON11 IC3 CON1 JCON10 ...
Страница 53: ...Samsung Electronics 6 11 PCB Diagram 6 6 2 Test Point Wave Form TP3 ...
Страница 55: ...Samsung Electronics 6 13 PCB Diagram 6 7 1 Test Point Wave Form TP1 TP2 TP3 ...
Страница 58: ...6 16 Samsung Electronics PCB Diagram 6 8 2 Test Point Wave Form TP4 TP5 ...
Страница 59: ...Samsung Electronics 6 17 PCB Diagram 6 9 MPEG PCB Bottom JCW1 RFCON1 CN2 ...
Страница 60: ...6 18 Samsung Electronics MEMO ...
Страница 66: ...4 6 Samsung Electronics Troubleshooting MAIN page 7 5 FCW4 AIC1 MAIN PCB Top page 6 9 Fig 4 3 1 1 1 1 ...
Страница 67: ...Samsung Electronics 4 7 Troubleshooting MAIN page 7 5 FIC1 FIC2 MAIN PCB Top page 6 9 Fig 4 3 2 2 2 2 ...