Fujitsu Siemens Computers B19-2 - Page 37

FSC B19-2
Page 37 of 55
8.2.2 Inverter Board
No power
Check AC line volt 110V or 220V
OK
Check AC line
Check the voltage of C904(+)
Check F901, BD901
Check start voltage for the pin3 of IC901
Check R906, R907, IC901
The auxiliary voltage (pin 7) is between 10V-16V jumping
1) Check IC901,T901
2) Check D902, D903, ZD904
3) Check IC902, IC903
OK
Check D910, D911,
OK
NG
NG (Stable)
No power
NG
NG
OK