Sony KD-43X85K Service Manual page 79

TROUBLESHOOTING
5.2 Light Sensor Error
Backlight level does not change when
ambient light changed
Check Light sensor
setting in TV menu.
On RC press
"Setting"Select "Light
Sensor"
Setting is "OFF"
Setting issue,
Change setting to "ON"
Setting is "ON"
Check harness
connection between
B-board and H-board
OK
Change harness
between B-board to
H-board
NG
Change H-board
NG
Change B-board
Main device issue
NG
Harness connection
issue
OK
B-board to H-board
harness issue
OK
H-board issue
79
SYS SET