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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 
21
RB2G
CHASSIS
W850B
Troubleshooting
3-2-1. LED Blinking: 3x (DC Alert & Communication Error)
Troubleshooting References (c)
Board /Parts
Board PWB  (A side)
Detail
BAXL
(RB8517)
B-Side
RB8517
BAXL
BAXL
(R8546, R8547)
R8546
R8547
BAXL
(CL5023, CL5024)
CL5023
CL5024
 
2.2-2 - LED Blinking: 3x (DC Alert & Communication Error)
 
Trouble Shooting References (c)
Chassis: RB2G, HE-H
Chassis: RB2G, HE-H 
22
RB2G
CHASSIS
W850B
Troubleshooting
3-2-1. LED Blinking: 3x (DC Alert & Communication Error)
Troubleshooting References (d)
g
( )
Board /Parts
Board PWB  (A side)
Detail
BAXL
(R8546, R8547)
R8546
R8547
BAXL
CL5024
(CL5023, 
CL5024)
CL5023
CL5024
BAXL
(F4601)
F4601
BAXL
(IC4601)
IC4601
BAXL
BAXL
(CN9101)
CN9101
 
2.2-2 - LED Blinking: 3x (DC Alert & Communication Error)
 
Trouble Shooting References (d)
Chassis: RB2G, HE-H
Chassis: RB2G, HE-H 
23
RB2G
CHASSIS
W850B
3-2-2 LED BLINKING 3x (Audio Error) – BAX-L(HE-L HM HE-H)board only
#2 
#3
3-2-2. LED BLINKING 3x (Audio Error) – BAX-L(HE-L,HM,HE-H)board only
F4601,IC4601,etc
(B* Board)
IC4601,etc
(B* Board)
Check the IC4601
Ch
k th IC4601
Check 19.5V
(at fuse F4601)
to GND
impedance
Replace F4601
High
enough
Out  pin 37, 41,  44, 46
Switching 0V to 19V
around 300-400kHz
No
Y
Check the IC4601
pin 18 (at CL4606)
is HIGH?
Yes
No
Low impedance
IC4601 or parts around IC4601
NG
Yes
Yes
Solder NG
IC4601 
Check broken parts
NG
Check the CN4601
DC level ~9.7V 
(at JL4621~JL4624)
No
L4601-L4604 
No
burn or broken ?
Yes
around IC4601
or C4611-C4614 
NG
Yes
Check the IC4601
I2S li
i
NG
Replace IC4601
I2S line pin
4, 12, 15, 16 (at 
CL4601~CL4604)
IC9000 NG
OK
IC4601 NG
 
2.2-3 - LED Blinking: 3x (Audio Error) - BAX-L Board
Chassis: RB2G, HE-H
Chassis: RB2G, HE-H 
24
RB2G
CHASSIS
W850B
BAX-L board Side A
Troubleshooting Reference 
BAX-L board Side A
6
02
6
03
6
04
CL4
6
CL4
6
CL4
6
12
13
24
25
18
15
16
IC4601
4
F4601
36
1
37
48
39
41
44
46
4
 
BAX-L Board (Side A)
 
 Trouble Shooting Reference
Page of 112
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