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  • KDL-60W840B, KDL-60W850B, KDL-60W855B, KDL-60W857B, KDL-70W830B, KDL-70W840B, KDL-70W850B, KDL-70W855B, KDL-70W856B, KDL-70W857B

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Model
KDL-60W840B KDL-60W850B KDL-60W855B KDL-60W857B KDL-70W830B KDL-70W840B KDL-70W850B KDL-70W855B KDL-70W856B KDL-70W857B
Pages
112
Size
15.03 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LEVEL3
File
kdl-60w840b-kdl-60w850b-kdl-60w855b-kdl-60w857b-kd.pdf
Date
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Sony KDL-60W840B / KDL-60W850B / KDL-60W855B / KDL-60W857B / KDL-70W830B / KDL-70W840B / KDL-70W850B / KDL-70W855B / KDL-70W856B / KDL-70W857B Service Manual ▷ View online

Chassis: RB2G, HE-H
Chassis: RB2G, HE-H 
25
RB2G
CHASSIS
W850B
BAX-L board Side B
Troubleshooting Reference 
BAX L board Side B
CL4601
JL4621
JL4622
JL4623
JL4624
 
BAX-L Board (Side B)
 
 Trouble Shooting Reference
Chassis: RB2G, HE-H
Chassis: RB2G, HE-H 
26
RB2G
CHASSIS
W850B
Troubleshooting
3 2 3 LED BLINKING 4x (LED Voltage Error)
3-2-3. LED BLINKING 4x (LED Voltage Error)
4-times blinking
LED d i
Between 0.49V to 1.32V
Board /Parts
Board PWB  (BAX-L – B SIDE)
Check 
BACKLIGHT_MON
on the BAXL
Board
LED driver
 For HT, HM, change LD board.
 For HE, change Panel.
BAXL
BACKLIGHT_MON 
= JL9106
BACKLIGHT_MON 
= JL9106
BAXL Board
 
2.2-4 - LED Blinking: 4x (LED Voltage Error)
Chassis: RB2G, HE-H
Chassis: RB2G, HE-H 
27
RB2G
CHASSIS
W850B
Troubleshooting
3 2 4 LED BLINKING 5x (T Con Error)
3-2-4. LED BLINKING 5x (T-Con Error) 
5-times blinking
BAXL (B-Side)
Check 
PANEL_VCC 12.5V at
CN8001 on
on the B* Board
G* Board
NG
Replace the Harness 
About 12.5V
OK
Symptom 
improvement
Between G* / LD board 
and B* board
Harness
NG
JL9132
Replace
the LVDS Harness
LVDS Harness
Symptom 
improvement
JL9132
(PANEL_VCC)
Change
B* Board
Change 
NG
B  Board
Panel (T-con)
NG
Symptom 
improvement
Confirm Tcon12V.
Size
B* Board
G* Board
B* Board
60”
BAXL
G2SB
70”
BAXL
G2SB
 
2.2-5 - LED Blinking: 5x (T-Con Error)
Chassis: RB2G, HE-H
Chassis: RB2G, HE-H 
28
RB2G
CHASSIS
W850B
Troubleshooting
3 2 5 LED BLINKING 6x (Backlight Error)
3-2-5. LED BLINKING 6x (Backlight Error)
6-times blinking
6 times blinking
Check JL9106* at
Parts
Board PWB (BAXL- B side)
Check JL9106  at
(BACKLIGHT_MON) 
of CN9101
on the B* Board
B* Board
Parts
Board PWB (BAXL B side)
(JL9106)
Change 
G* board
1.3 -1.8 V
Symptom 
improvement
Have G board?
G* Board
Yes
A
Y
U
2
JL9106
No
Ch
Symptom 
improvement
Change 
LD Board
LD Board
Size
B* Board
G* Board
60”
BAXL
G2SB
70”
BAXL
G2SB
 
2.2-6 - LED Blinking: 6x (Backlight Error)
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