NEC AccuSync LCD72VM - Page 114

6-6
5. PWPC
5.1 No Power
Check to CN102 PIN 12=12V
Check Interface Board
Check AC line volt 110V or 220V
OK
NG
OK
Check AC line
Check the voltage of C905(+)
Check F901, bridge rectified circuit
Check start voltage for the PIN 3 of IC901
Check R906, R907, IC901
Check the auxiliary voltage Is between 10V-16V
1) Check IC901,
2
)
Check
Q
901
,
Q
902 OVP circuit
NG
OK
Check D910, D911, ZD904
OK
OK
NG
NG
NG