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
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| Check the |
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| Check pin 24 |
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| In/out of | |
| No |
| Of IC01(H - Out) |
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| IC06, IC07 | ||||
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| Check & |
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| Yes |
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| Replace |
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| IC01 |
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| Check Q402 |
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| No |
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| Collector waveform |
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| Yes |
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| Replace |
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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 |
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& each pin voltage |
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No | No | |
Yes | ||
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Check / Replace IC801, IC803, IC802
Check &
Replace
T401
Check & Replace
T402
Yes
Check IC01
Pin1 high?
Check / Replace IC01
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| No |
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| Yes |
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| Is the voltage at pin3,15,45 |
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| IC02 5V? |
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| No |
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| No |
| Check the | |||
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| Check the |
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| Check & |
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| Replace |
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| D860 or D858 | |||||
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| IC855,IC851 |
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| IC01, IC03 |
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No | Check & | |
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| Replace |
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| F853 ,F855 |
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- 19 -
