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11.2. Power/Inverter Board
(1) No power
Check ZD902
=
16V
Check AC line volt is 90V or 264V
Check AC input
Check the voltage of C905A (+)
Check bridge rectified circuit and F901 circuit
Check start voltage for the pin8 of IC901
Check R904, R905 and Change IC901
NG
Check the auxiliary voltage is bigger
than 16V and smaller than 32V
1) Check IC901
2) Check R909, D901 circuit
OK
OK
NG
Check Q901, IC903, IC904, D906, D907, D909
OK
Check IC901 pin5 PWM wave
OK
Check IC901
NG
NG
NG
OK
NG
Содержание 190V1SB/00
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