Sony XBR-55X850D Service Manual page 58

FLOW
6. IR REMOTE COMMANDER ERROR
IR remote commander does not
respond
Resistor value
[BMFW2/BM1]
R1080 : 0 [ohm]
R1502 : 47k [ohm]
* R1080 may be not mounted
[BFM/BM2]
R1110 : 0 [ohm]
R1259 : 47k [ohm]
* R1110 may be not mounted
XBR-55X850D/857D, 65X850D/855D/857D, 75X850D
Center white LED blinks
when pushing buttons of
remote commander at close
to IR sensor.
NG
Check harness connection
between B-board and
SmartCore
NG
Change harness between B-
board to SmartCore harness
NG
Change SmartCore
NG
Check resistor value on B-
board
OK
OK Battery of remote commander
could be weak.
Change battery.
OK
Harness connection
issue
OK
B-board to SmartCore harness
issue
OK
SmartCore issue
NG
Parts issue
Change B-board
Main device issue
TROUBLE SHOOTING
58