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Samsung Electronics
4-1
Troubleshooting
4. Troubleshooting
4-1 Checkpoints by Error Mode
4-1-1 No Power
Check MAIN PCB
CON3 Pin 1: 5.6V?
No Power
Check or replace SMPS.
Check or replace SMPS.
No
Check reset
circuit in MAIN PCB UX1, UX2
part ok?
Yes
Yes
Check or replace SMPS.
Check MAIN PCB
PCN3 Pin 1 ~ 4 : 5V,
Pin 6, 9 : 12V?
No
No
No
Check VFD Voltage
in MAIN PCB PCN3
Pin 13 ~ 15?
Check signal and signal
pattern.
Check pattern or replace
MICOM IC.
Yes
Yes
Yes
No
No
Check MAIN PCB UIC1
UD1, 2, 3 : 5V?
1
Check MAIN PCB UIC1
Pin 14, 40, 55, 89: 5V?
Refer to wave pattern
image of Fig. 4-1.
Содержание MX-C730D
Страница 24: ...3 12 Samsung Electronics MEMO ...
Страница 28: ...4 4 Samsung Electronics Troubleshooting MAIN _AMP page 7 6 PIC3 WIC1 MAIN PCB Top page 6 5 Fig 4 2 1 1 1 ...
Страница 44: ...5 11 Samsung Electronics MEMO ...
Страница 46: ...6 2 Samsung Electronics PCB Diagram 6 2 FRONT PCB Top 1 UCW2 USJ1 UCW1 UIC2 ...
Страница 48: ...6 4 Samsung Electronics PCB Diagram 6 3 FRONT PCB Bottom FIC1 UIC2 UCW1 USJ1 UCW2 ...
Страница 53: ...Samsung Electronics 6 9 PCB Diagram 6 6 SMPS PCB Top CON2 CN1 UB1 CON3 UM1 ...
Страница 54: ...6 10 Samsung Electronics PCB Diagram 6 7 SMPS PCB Bottom CON2 CN1 UB1 CON3 UM1 ...
Страница 62: ...7 8 Samsung Electronics MEMO ...