Sony RB1G Service Manual page 54

Troubleshooting
3-2-4. LED Blinking 4x (LED Voltage Error)
4-times blinking
Between 0.98V to 1.23V
Check JL9112
(BACKLIGHT_MON)
on the B* Board
B* Board
For Ayu2(IC9000) replacement check related section
LED driver
Size
32"
42"
Note:
G BOARD : ( N/A FOR THIS MODEL)
3-2-5. LED Blinking 5x (T-Con Error) (HG and TE Model)
5-times blinking
Check PANEL_VCC
NG
12.5V at pin 47-51 of
CN8001 on
on the B* Board
OK
About 12.5V
Replace the Harness Symptom
Between G-board / improvement
Adapter (BK* only)
and
Panel
NG
Symptom
improvement
Replace
the LVDS Harness
NG
B* Board Type
(Segment: LW)
OTHERS EUROPE JP
BKX BKE BKJ
BKX BKE BKJ
W600A/ W603A/ W605A/ W607A/ W650A/ W651A/ W653A/
W654A/ W655A/ W656A/W657A/ W658A/ W670A/ W674A
Panel (T-con)
change
G-board
Symptom
improvement
Panel (T-con)
Harness
LVDS Harness
RB1G CHASSIS
NG
B* Board
Confirm Tcon 12V.
Note:
(AYU2) – IC9000
(Brownie)- IC9001
54