NO RASTER
Normal
CHECK B+
At D807 cathode
Abnormal
Is the voltage at |
Check
Open
Pin 25, 54 of IC01 3.3V? |
No |
Yes |
Fuse of AC line
|
|
|
|
|
|
|
|
|
| Check the |
|
|
|
|
|
| Check pin 24 |
|
| In/out of | |
| No |
| Of IC01(H - Out) |
|
| IC06, IC07 | ||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
| Check & |
|
| Yes |
|
| ||||
| Replace |
|
|
|
| |||||
| IC01 |
|
|
|
|
|
| |||
|
|
|
|
|
| Check Q402 |
|
| ||
|
|
|
|
|
|
|
| |||
| No |
|
|
|
| Collector waveform |
|
| ||
|
|
|
|
|
|
| ||||
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
| ||||
|
|
|
|
|
|
|
|
|
|
|
| Check & |
| Yes |
|
| |||||
| Replace |
|
|
|
|
| ||||
Ok
Check the Voltage
Of C804
254~380 V
Check the Voltage
Pin 3 of IC801
Check / Replace Fuse , DB801
0V
Check / Replace Fuse DB801
Q402 |
| |
Check T401 |
| |
& each pin voltage |
| |
No | No | |
Yes | ||
|
Check / Replace IC801, IC803, IC802
Check &
Replace
T401
Check & Replace
T402
Yes
Check IC01
Pin1 high?
Check / Replace IC01
|
|
|
|
| No |
|
|
| ||||
|
| Yes |
|
|
|
|
|
|
|
|
| |
|
| Is the voltage at pin3,15,45 |
|
| ||||||||
|
|
|
|
|
| |||||||
|
|
|
| IC02 5V? |
|
| ||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||
|
|
|
| No |
|
|
|
|
|
| ||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| No |
| Check the | |||
|
|
|
| Check the |
|
| ||||||
| Check & |
| ||||||||||
|
|
|
|
|
|
| ||||||
|
|
|
|
|
|
| Voltage at | |||||
|
| In/out of |
|
|
|
|
| |||||
| Replace |
|
|
|
|
|
| |||||
|
|
|
|
|
|
| D860 or D858 | |||||
|
| IC855,IC851 |
|
|
|
|
| |||||
| IC01, IC03 |
|
|
|
|
|
| |||||
|
|
|
|
|
|
| cathode | |||||
|
|
|
|
|
|
|
|
| ||||
|
|
|
|
|
|
|
|
|
|
| ||
|
|
|
|
|
|
|
|
|
|
| ||
|
|
|
|
|
|
|
|
|
|
|
|
|
No | Check & | |
|
| |
|
| Replace |
|
| |
|
| F853 ,F855 |
|
|
|
- 19 -