Philips BDL6531E/00, Service Manual

Page: 124 / 130

124 BDL6531E LCD
Repair Flow Chart
System power ON?
Yes
No
Keypad LED ON ?
Check U38
Ε
U39
Ε
U43 output
voltage (1.8V,3.3V,2.5V) is correct
Yes
No
Check which one is fail?
1.Check IR/Lign wire cable Ε Audio wire cable
or Sensor wire cable to check which one is
short to cause this fail
2. Check keypad board NG or OK
No
Back light on
?
1. Check wire cable connection between main
board and keypad
2. Check VCC Power 5V in
No
Yes
OSD image ok ?
Function ok?
No
Check J24 LVDS cable connection board and
main board
No
Check every PCBA board function
Yes
Yes
Check wire cable connection between back
light and power board
No
Input signal display
Check input cable
Audio ok
No
1. Check audio input cable connection
2. Check wire cable connection between audio
board and main board
Yes
Yes