Circuit Description
13-18
Samsung Electronics
■
Troubleshooting the Drive Board
1) Y Buffer
- To check whether the Y Main board is properly working, check the operation of the Y Buffer first.
- Separate the connector of the Y Buffer from the Y Main board
- Check OUTL and OUTH and confirm that the forward voltage reduction is between 0.4V ~ 0.5V.
UP - CN5407 1~10pin - OUTH / 11~33pin - OUTL
LOW - CN5507 50~41pin - OUTH / 40~17pin - OUTL
- In addition, the resistance between the points must be higher than a few k
Ω
.
OUTL
OUTH
Y - B u f f e r ( L o w )
Y - B u f f e r ( U P )
CN5404
OU T L ( 1 7 ~ 3 4 )
CN5504
OU T L ( 3 5 ~ 3 8 )
OU L H ( 1 ~ 4 )
OU T L ( 5 ~ 2 4 )
Содержание PS42D51SX/XEC
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