49
2.) W / LED , No Backlight
Check C201(+) =12V
NG
OK
Change F902
Check D201/Q209/Q210 or D202/Q211/Q212
Check ON/OFF signal
Check Interface board
NG
OK
Check U201 pin9=12V pin9=12vvoltage of C905(+)
NG
OK
Change Q201 or Q202
Check the pin1 of U201 have sawtooth wave
NG
Change U201
Check D201(-),D202(-) have the output of square wave at short time.
NG
OK
Check Q205/Q207/Q203/D201 or
Q206/Q208/Q204/D202
Check the resonant wave of pin2 & pin5 for PT201/PT202
NG
OK
Check the output of PT201/PT202
Check Q209/Q210/C213 or
Q211/Q212/C214
Check connecter & lamp
OK
NG
Change PT201or PT202
OK
To Next Page
Loading...
