XBR-49/55/65/75X900E
TROUBLE SHOOTING
FLOW
7. LIGHT SENSOR ERROR
48
Backlight level does not change
when ambient light changed
Battery of remote commander
could be weak.
Change battery.
Check harness connection
between B*board and Smart
Core
Change harness between B*
board to Smart Core harness
B* board to Smart Core harness
issue
Harness connection
issue
Change Smart Core
Smart Core issue
NG
OK
Check resistor value on B*
board
Change B* board
Main device issue
OK
Parts issue
Check harness connection
between B*board and H-
board
NG
NG
NG
OK
OK
OK
NG
Check UI setting and make
sure light sensor setting is
“ON”
Setting issue
Change setting to “ON”
Setting is “OFF”
Resistor value
[BMKS]
R1109 : 0 [ohm]
R1052 : 150k [ohm]
[BMKP]
R251 : 0 [ohm]
R233 : 150k [ohm]
Setting is “ON”
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