• Service Manuals |
  • Sony |
  • TV |
  • KDL-60W840B, KDL-60W850B, KDL-60W855B, KDL-60W857B, KDL-70W830B, KDL-70W840B, KDL-70W850B, KDL-70W855B, KDL-70W856B, KDL-70W857B

DOWNLOAD Sony KDL-60W840B / KDL-60W850B / KDL-60W855B / KDL-60W857B / KDL-70W830B / KDL-70W840B / KDL-70W850B / KDL-70W855B / KDL-70W856B / KDL-70W857B Service Manual ↓ Size: 15.03 MB | Pages: 112 in PDF or view online for FREE

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
PREV: Sony KDL-50R550A / KDL-50R555A / KDL-50R557A / KDL-60R520A / KDL-60R550A / KDL-60R551A / KDL-60R555A / KDL-60R557A / KDL-70R520A / KDL-70R550A / KDL-70R551A / KDL-70R555A / KDL-70R557A Service Manual

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 
37
RB2G
CHASSIS
W850B
BAX-L board Side A
Troubleshooting Reference 
BAX L board Side A
12
25
8
27
IC4601
F4601
36
1
37
48
C4607
C4608
C4606
C4609
 
BAX-L Board (Side A)
 
 Trouble Shooting Reference
Chassis: RB2G, HE-H
Chassis: RB2G, HE-H 
38
RB2G
CHASSIS
W850B
Troubleshooting
3-3-4. Main Board Power On Checking (for Main SP Lch & Rch) for BAX-L (HEL,HEH,HM) board only
No
Checking Item
OK
NG
If
 NG
If 
 NG
1
Check 
IC4601 side-terminal of 
L4601,L4602,
L4603,L4604
Switching Freq = 384kHz or 
768KHz ±20KHz
Vrms = don’t care
No switching 
frequency at 
either one of 
the CL
Go to next checking.
2
Check F4601 MainSP
(for BAX-L only)
V(before fuse) = 12.5V ± 0.5V
V(after fuse) = 12.5V ± 0.5 V
No voltage.
Check fuse broken?
Check CN9101 Pin 8 
&10
t 12 5V?
Change fuse (5A).
Check power supply 
b
d
di VCC
&10 got 12.5V?
board audio VCC.
3
Check F4601 MainSP
V(before fuse) = 19 5V ± 0 5V
No voltage
Change fuse (5A)
3
Check F4601 MainSP
(BAX-L board only)
V(before fuse) = 19.5V ± 0.5V
V(after fuse) = 19.5V ± 0.5V
No voltage.
Change fuse (5A).
Check power supply 
board audio VCC.
4
Check IC4601     (Pin 
8) and C4601 (Pin 27) 
(for BAX-L board only)
V(before fuse) = 3.3V ± 0.5V
V(after fuse) = 3.3V ± 0.5V
No voltage.
Check +3.3V_MAIN 
supply.
 
2.3-3 - Main Board Power On Checking (For Main Speaker L&R) for BAX-L Board Only
Chassis: RB2G, HE-H
Chassis: RB2G, HE-H 
39
RB2G
CHASSIS
W850B
Troubleshooting
3-3-4. Main Board Power On Checking (for Main SP Lch & Rch) for BAX-L (HEL,HEH,HM) board only
No
Checking Item
OK
NG
If
 NG
If 
 NG
5
Check CL4605, 
CL4606, CL4607
Vdc = 3.3V ± 0.3V
Vdc < 0.8V
CL4606 NG,
Check IC4601
CL4605,4607 NG,
Check IC9000
6
Check CL4601, 
CL4602, CL4603, 
CL4604
CL4601 = 12.288MHz
CL4603 = 3.072MHz
CL4604 = 48KHz
CL4602 = moving CLK
If no frequency at CL4601, 
CL4603, CL4604, Ayu2 IC 
(IC9000) NG.
If  no frequency at CL4602, 
If sound source OK, 
but CL4602 = NG,
Ayu2 IC (IC9000) NG.
All Vp-p 
≈ 3.3V
make sure sound source 
OK.
Note: 
(AYU2/
Ayu2L
) – IC9000
(
y
)
(Brownie)- IC9001
 
2.3-3 - Main Board Power On Checking (For Main Speaker L&R) for BAX-L Board Only
Chassis: RB2G, HE-H
Chassis: RB2G, HE-H 
40
RB2G
CHASSIS
W850B
BAX-L board Side A
Troubleshooting Reference 
BAX L board Side A
12
25
24
13
F4601
Pin 8
Pin 27
IC4601
L4604
L4603
L4602
L4601
F4601
36
1
37
48
 
BAX-L Board (Side A)
 
 Trouble Shooting Reference
Page of 112
Display

Click on the first or last page to see other KDL-60W840B / KDL-60W850B / KDL-60W855B / KDL-60W857B / KDL-70W830B / KDL-70W840B / KDL-70W850B / KDL-70W855B / KDL-70W856B / KDL-70W857B service manuals if exist.

RANDOM: