Daewoo DCR-9130 SERIES, Service Manual

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5
TROUBLESHOOTING
1. POWER CIRCUIT
✓
CAUTION
You must use insulated transformer during the first part test of POWER circuit.
Check IC801,IC804,D821,
D822,D823,D824,D825,D826,
D827,D828,D830
No power
Power cord is ok?
Is 200V~400V voltage
obtained at C805+?
Switching Pulse of
IC801 and IC804
Drain is normal?
Cathode Voltage of
D821,D822,
D823,D824,D825,D826,D827,
D828,D830 is normal?
Output voltage of Q801,
Q802,IC807 is normal?
Check the MAIN BOARD
Exchange Power cord
Check F801,L801,L802,
D801,R803,R804,R807,R808
Exchage the wicked part
11th pin voltage of P823 is DC 5V
when Power on "H"?
NO
YES
YES
YES
YES
YES
NO
NO
NO NO
NO
Check MICOM
ON/OFF Control
NO
Check Q801,Q802, IC807