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4-2
Samsung Electronics
Troubleshooting
4-1 Checkpoints by Error Mode
4-1-1 No Power
1
Check MAIN PCB UIC1
Pin 14, 40, 55 and
89: 5V
Yes
No
Check MAIN PCB
IC1P102 Pin 2: 5.6V
Yes
No Power
No
Replace IC1P101
(1203-004520)
Check MAIN PCB
UIC1 Pin 3: 5V (High)
Yes
Check VFD Voltage
in MAIN PCB FCW1
Pin 7, 9, 10 and 11
Check MAIN PCB
Q1P105 Pin 3: High
No
Yes
No
Replace IC1P101
(1203-004520)
Check or replace
PT01 (-VP: Pin 13,
+VP: Pin 14)
No
Replace MICOM IC
2
Check reset circuit in
MAIN PCB X-TAL1, UQ1
part ok?
Yes
Replace X-TAL1, UQ1 parts
No
Refer to wave pattern
image of Fig. 4-1.
Refer to wave pattern
image of Fig. 4-2.
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 ...