Read Sony KDL-60W840B / KDL-60W850B / KDL-60W855B / KDL-60W857B / KDL-60W858B / KDL-70W830B / KDL-70W840B / KDL-70W850B / KDL-70W855B / KDL-70W856B / KDL-70W857B Service Manual online
RB2G
CHASSIS
W830B/ W840B/ W850B/ W855B
W856B/ W857B
Troubleshooting
3-5. SIDE BUTTONS MALFUNCTION
Side Key button
malfunction
Change Switch
Unit
Switch unit issue
OK
IR do not response to
Remote control battery
could be weak
Center white LED
lit up when
lit up when
Check whether center
white LED blink ,when
white LED blink ,when
3-6. IR REMOTE COMMANDER MALFUNCTION
Harness on Switch Unit
and BAXL
Board properly connected
Harness connection
issue
NG
OK
Remote Commander
could be weak.
Change battery.
remote is control
is pressed
is pressed
using commander near
the sensor windows
Harness on H-board
and BAXL Board
properly connected
and BAXL Board
properly connected
Harness
connection issue
Change
Switch unit-BAXL board Harness
Harness issue
NG
OK
properly connected
Change H-BAXL
board Harness
H-BAXL board harness
issue
Change BAXL
Board
NG
Change BAXL Board
Change Smart Core
or
H-board
OK
Smart core issue
or
H-board issue
NG
Note: Blue line/font for HM segment
3-7. Light Sensor Error
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”
User did not activate light
sensor function
OK
OK
Harness on H-board and
BAXL Board properly connected
Harness connection
issue
NG
NG
Change
H-BAXL board Harness
OK
Smart Core issue
Change Smart Core
OK
H-BAXL board harness
issue
NG
23
Change BAXL Board
issue
NG
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