DOWNLOAD Sony KDL-42W850A / KDL-47W850A / KDL-55W850A Service Manual ↓ Size: 53.63 MB | Pages: 127 in PDF or view online for FREE

Model
KDL-42W850A KDL-47W850A KDL-55W850A
Pages
127
Size
53.63 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kdl-42w850a-kdl-47w850a-kdl-55w850a.pdf
Date
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Sony KDL-42W850A / KDL-47W850A / KDL-55W850A Service Manual ▷ View online

RB1G
CHASSIS
W850A
Troubleshooting
Troubleshooting Reference 
Board Name
Board PWB  (B side)
Detail
BA2-S/W
F4601
F4601
BM
F4601
(
t
li
bl f
(not applicable for 
this model)
F4601
41
RB1G
CHASSIS
W850A
Troubleshooting
3-2-2. LED BLINKING  3x (Audio Error) – BA2 (applicable) and BM board only (not applicable for this model)
F4601,IC4601,etc
(B* Board)
#2 
IC4601,etc
(B* Board)
#3
Check 12.5V 
( at F4601) to GND
Replace F4601
High
enough
Check the IC4601
Out  pin 9, 16, 25, 32
Switching 0V to 12V
No
Check the IC4601
pin 18 (at CL4606)
is HIGH?
No
impedance
Low impedance
IC4601 or parts around IC4601 NG
around 300-400kHz
Yes
Yes
Solder NG
IC4601 
Check broken parts
IC4601 or parts around IC4601 NG
Check the CN4601
DC level ~2V (at 
No
L4601-L4604 
or
C4611-C4614
No
burn or broken ?
Yes
around IC4601
JL4621~JL4624)
C4611-C4614 
NG
Yes
Check the IC4601
I2S line pin 5, 6, 7, 8
NG
Replace IC4601
I2S line pin 5, 6, 7, 8
(at CL4601~CL4604)
IC9000 NG
OK
Note:
42
IC4601 NG
Note: 
(AYU2) – IC9000
(Brownie)- IC9001
RB1G
CHASSIS
W850A
Troubleshooting
BA2 board -Side A
Troubleshooting Reference 
BA2 board -Side A 
C
C
C
C
L4602
C
L4603
C
L4604
CL4601
43
RB1G
CHASSIS
W850A
Troubleshooting
BA2 board -Side B
Troubleshooting Reference 
BA2 board -Side B 
IC4601
F4601
9
16
25
32
CL4606
JL46
2
JL462
JL46
2
JL46
2
44
2
1
2
2
3
2
4
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