ITC2
CHASSIS
R402/ R407/ R422/ R435/ R452/ R457/ R472/ R488
Troubleshooting
3 4 No Picture
3-4. No Picture
No Picture
Note :
PANEL VCC SW = 12V±0 8V
Check Input Source:
-Tuner
Replace LVDS FFC
Check
PANEL VCC SW at
Input
OK
Still No
Picture
OK
CHECK BL_ON on
B-Board at
R5037
.
PANEL_VCC_SW = 12V±0.8V
+12V
OK
- MHL/HDMI
-Video/Component
p
Harness
_
_
JL6007
on
B-Board
Picture OK
HIGH
: OK
LOW
: NG
NG
No +12V
Input NG
LVDS FFC
Harness
Problem
Adaptor
or +12V DDCON
Problem
Picture OK
Backlight or LED
Driver Problem
Replace Input
Source
put
G
Replace B-Board
Panel Module
O C ll
Still No Picture
END
Replace B-Board
or O-Cell
Problem
Picture OK
END
Picture OK
B-Board Issue
* O-Cell or Panel Module
replacement Not recommended
at Service Side.
*Panel or O-Cell
Issue
25