20.0” LCD Color Monitor
Lenovo L2060wA
40
8.2.2 Power/Inverter Board
No power
Check bridge rectified circuit and F901 circut
1) Check IC901
2) Check R909/D901/C903 and OVP circuit
Check CN902 pin4, 5 = 5V
Check the voltage of C907(+)
Check start voltage for the pin8 of IC901
Check R933, R934, R935, and Change IC901
NG
Check the auxiliary voltage is bigger than
10V and smaller than 20V
NG
NG
NG
Check Q903/D906/IC902/ZD921/ZD922
Check IC901 pin5 PWM wave
Check IC901,Q901
NG
OK
NG
OK
OK
OK
OK
Check AC line volt 110V or 220V
Check AC input
Содержание L2060wA
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