6. Raster
NO Raster |
|
| |
(Lamp Off) |
|
| |
CHECK | NO | Check Scaler Output | |
P201 Pin9 | |||
| (Main Board) | ||
3.3V? |
| ||
|
| ||
YES |
|
| |
Check U301 Pin3 | NO | Check Q301, Q302 | |
| |||
5V? |
|
| |
YES |
|
| |
Check U301 Pin2 OVP, | NO | Check the waveform of U301 | |
| Pin11, 12, 19, 20 | ||
Less than 1.8V |
| ||
|
| ||
YES |
|
| |
Check U301 Pin10 CMP, | NO | Check the waveform of U301 | |
| Pin11, 12, 19, 20 | ||
Less than 2.75V |
| ||
|
| ||
|
| If waveform is no problem | |
Check U303, U304 | NO | Check Q303~Q308 | |
Drain waveform |
| Or Trouble in U303, U304 | |
YES |
|
| |
CHECK T301, T302 |
|
|
Copyright 2007 LG Electronics. Inc. All right reserved. | LGE Internal Use Only |
Only for training and service purposes | - 23 - |
|
