Read Sony KDL-55W950B / KDL-55W955B / KDL-55W957B / KDL-65W950B / KDL-65W955B Service Manual online
RB2G
CHASSIS
W950B/ W955B/ W957B/ M25B
23
Troubleshooting
3-5. SIDE BUTTONS MALFUNCTION
Side Key button
malfunction
Harness on Switch Unit
and B* Board properly connected
Change
Switch unit-BAX board Harness
Harness connection
issue
Change BAX Board
Change Switch
Unit
Switch unit issue
Harness issue
OK
NG
NG
NG
OK
OK
IR do not response to
Remote Commander
Remote Commander
Remote control battery
could be weak.
Change battery.
Center white LED
lit up when
remote is control
is pressed
lit up when
remote is control
is pressed
Check whether center
white LED blink ,when
white LED blink ,when
using commander near
the sensor windows
Harness on H-board
and BAX Board
properly connected
and BAX Board
properly connected
Change H-BAXL
board Harness
H-BAXL board harness
issue
Harness
connection issue
Change BAX Board
Change Smart Core
or
H-board
OK
Smart core issue
or
H-board issue
NG
3-6. IR REMOTE COMMANDER MALFUNCTION
Note: Blue line/font for HM segment
3-7. Light Sensor Error
Change BAX Board
Backlight doesn’t change
when ambient lighting
level changed
Check UI setting for light
Sensor. Make sure it is “on”
Change the UI setting to
“:ON”
OK
Harness on H-board and
BAX Board properly connected
Harness connection
issue
NG
User did not activate light
sensor function
OK
Change
H-BAXL board Harness
NG
OK
Smart Core issue
Change Smart Core
OK
H-BAX board harness
issue
NG
NG
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