5.Power Board No power
No power
Check to CN902 Pin10,11 =14V and Pin6,7 = 5 V
|
| OK | NG |
| Check Interface board |
|
| |||||
|
|
|
|
|
|
|
|
|
| |||
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
| ||
|
| Check AC line volt 120V or 220V |
|
|
|
|
|
|
| |||
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
| NG |
|
|
|
| |||||
|
| OK | Change F901, Check BD901, L901, IC901 | |||||||||
|
|
|
|
|
|
|
| |||||
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
| |||
|
|
|
|
|
|
|
|
|
| |||
|
| Check the voltage of C905(+) |
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
| ||
|
|
| NG |
|
|
|
|
| ||||
|
|
|
|
| Check bridge retified circuit |
| ||||||
|
|
|
|
|
|
|
|
|
| |||
|
| OK |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
| ||||||
| Check start voltage for the Pin2 of IC901 |
|
|
|
|
| ||||||
|
|
|
|
|
|
|
|
| ||||
|
|
| NG |
|
|
|
|
| ||||
|
|
|
| Change IC901 |
|
|
| |||||
|
|
|
|
|
|
|
|
|
| |||
|
|
|
|
|
|
|
|
|
|
|
|
|
OK
Check the auxiliary voltage is smaller than 20V
NG
Check IC901
OK
Check T901,D906, D907, Q903,ZD921,ZD922,IC904,IC903
35
