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 
BM board Side B (not applicable for this model)
(
pp
)
CL4606
C
L
C
L
C
L
C
L
CL4605
IC4601
CL4606
L
460
2
L
460
1
L
460
3
L
460
4
CL4607
93
RB1G
CHASSIS
W850A
Troubleshooting
Troubleshooting Reference 
BKE and BKX board Side A (not applicable for this model)
BKE and BKX board Side A (not applicable for this model)
CL4
6
CL4
6
CL4
6
CL4
6
CL4
6
F4601
6
02
6
04
6
03
6
05
6
07
IC4601
CL4601
CL4601
94
RB1G
CHASSIS
W850A
Troubleshooting
Troubleshooting Reference 
BKE and BKX board Side B (not applicable for this model)
BKE and BKX board Side B (not applicable for this model)
CL4606
95
RB1G
CHASSIS
W850A
Troubleshooting
No Sound
3-3-5.  No Sound: HP / Lineout Only
(*)
Size
B* Board Type G* Board Type
42”
BA2-S
GL2S
HP / Lineout only
BA2 / BM / BKE / BKX Power 
On checking
This is for Main SP got sound, but HP / Lineout no sound
Note:
42
BA2 S 
GL2S
47”
BA2-S
GL2S
55”
BA2-S
GL2E
RB1 Main Board Power On Checking
Note: 
(AYU2) – IC9000
(Brownie)- IC9001
No
Checking Item
OK
NG
If
 NG
1
Insert HP Jack. Check R4508
Vdc = 3.3V ± 0.3V
Vdc = 0V or < 1V
Check HP_DET line 
(R8113 – for BA2 and BM)
(R8124 – for BKE and BKX) got
(R8124  for BKE and BKX) got 
short to GND?
2
Check IC4501 Pin 5 
(X AUDIO MUTE  SPHPLO)
Vdc = 3.3V ± 0.3V
Vdc = 0V or < 1V
Check X_AUDIO_ MUTE1_ SPHLO 
(Pin 5) 
short to GND?
( _
_
_
)
(
)
3
Check CL4505, CL4506.
(with audio signal input)
Can see audio signal 
waveform
Cannot see audio signal 
waveform
Go to below item No. 4 for checking
4
Check IC4501 pin 9
Vdc = 3.3V ± 0.3V
No 3.3V supply
5
Check CL4501, CL4502
(with audio signal input)
Can see audio signal 
waveform
Cannot see audio signal 
waveform
Brownie IC (IC9001) NG
96
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