4-2
Samsung Electronics
Troubleshooting
4-1 Checkpoints by Error Mode
4-1-1 No Power
Check for
POWER-SENSE (5V) in
MAIN PCB PCW3 pin 11
MAIN PCB PCW3 Pin 10
voltage (5.60V)?
Check VFD Voltage in
MAIN PCB PCW3
pin 15, 14, 13
CHECK or REPLACE SMPS
CHECK or REPLACE SMPS
Yes
No
Yes
No
Yes
No
The power does not turn on.
Check for RESET/OSC parts in Main
PCB: X-TAL1, UQ1
CHECK or REPLACE SMPS
Summary of Contents for MM-DA25
Page 34: ...Samsung Electronics 6 3 PCB Diagram 6 2 MIC PCB Top 1 2 MCON11 UJ2 ...
Page 36: ...Samsung Electronics 6 5 PCB Diagram 6 3 MIC PCB Bottom MCON11 UJ2 ...
Page 37: ...6 6 Samsung Electronics PCB Diagram 1 2 6 4 FRONT PCB Top MCW1 VFD1 UJ11 ...
Page 39: ...6 8 Samsung Electronics PCB Diagram 6 5 FRONT PCB Bottom MCW1 VFD1 UJ11 UIC2 HIC2 MIC1 ...
Page 43: ...6 12 Samsung Electronics PCB Diagram 6 7 1 Test Point Wave Form TP1 TP2 ...
Page 46: ...Samsung Electronics 6 15 PCB Diagram 6 9 MPEG PCB Bottom MIC1 BIC4 DIC3 VIC1 IC4 IC3 IC2 ...
Page 47: ...6 16 Samsung Electronics PCB Diagram 1 6 10 SMPS PCB Top CON3 IC1 ...
Page 49: ...6 18 Samsung Electronics PCB Diagram 6 11 SMPS PCB Bottom CON3 ...