Sony RB1G Service Manual page 371

Troubleshooting
3-9. Light Sensor Error
Backlight doesn't change
when ambient lighting
level changed
Smart Core Diagram
Smart Core
HSC
harness
HIR/HIS
Size B* Board Type
(Segment: LW)
OTHERS EUROPE JP
24" BLX BLE BLJ
32" BKX/BLX BKE/BLE BKJ/BLJ
42" BKX/BLX BKE/BLE BKJ/BLJ
50" BLX BLE -
Change the UI
setting to ":ON"
Check UI setting for light
sensor .
Make sure it is "on"
To B* Board
H* H**
Board Board
Type Type
HIS HSC
HIR HSC
HIR HSC
Change B* Board
HIR HSC
Update Software
NG
OK
Check current Software
OK
Check whether harness is
Connected on HIR/HIS and
HSC Board
OK
Check whether
harness is
Connected on HSC
and B* Board
OK
Change Smart Core
NG
Change
HSC-B* board Harness
NG
W600A/ W603A/ W605A/ W607A/ W650A/ W651A/ W653A/
W654A/ W655A/ W656A/W657A/ W658A/ W670A/ W674A
NG
Connect the Harness
properly
NG
OK Problem with Smart Core
HSC or HIR/HIS
or HSC-HIR/HIS harness
OK
HSC-B* board harness
problem
RB1G CHASSIS
371