Daewoo DSJ-4720CRU, Service Manual

Page: 36 / 69

35
TROUBLE SHOOTING
When Power isn’t supplied
Stand by LED is red.
YES
NO
NO
NO
YES
Check RS810
DC 3.3V
Remote Controller
Power On Check
Check QS802 works normally
Check I804 is high
NO
Check
Stand by circuit
Replace QS802
Replace I804
or check DS815
NO
Check I801 #3
DC 20V
Check QS801, DS807
works nomally
Check QS801, DS807
works nomally
NO
Check 2nd power ass’y
YES
Replace I801
YES
Change this parts
NO
Check I801 #1 is Switching
END
Check I801 #1 is DC 300V
Check D811
Check Remote
Controller Circuit
YES
YES
YES
YES YES
NO
NO