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