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  • KDL-32W700B, KDL-42W700B, KDL-42W800B, KDL-42W805B, KDL-50W700B, KDL-50W790B, KDL-50W800B, KDL-50W805B, KDL-50W807B, KDL-55W700B, KDL-55W790B, KDL-55W800B, KDL-55W805B, KDL-55W807B

DOWNLOAD Sony KDL-32W700B / KDL-42W700B / KDL-42W800B / KDL-42W805B / KDL-50W700B / KDL-50W790B / KDL-50W800B / KDL-50W805B / KDL-50W807B / KDL-55W700B / KDL-55W790B / KDL-55W800B / KDL-55W805B / KDL-55W807B Service Manual ↓ Size: 29.74 MB | Pages: 127 in PDF or view online for FREE

Model
KDL-32W700B KDL-42W700B KDL-42W800B KDL-42W805B KDL-50W700B KDL-50W790B KDL-50W800B KDL-50W805B KDL-50W807B KDL-55W700B KDL-55W790B KDL-55W800B KDL-55W805B KDL-55W807B
Pages
127
Size
29.74 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LEVEL3
File
kdl-32w700b-kdl-42w700b-kdl-42w800b-kdl-42w805b-kd.pdf
Date
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Sony KDL-32W700B / KDL-42W700B / KDL-42W800B / KDL-42W805B / KDL-50W700B / KDL-50W790B / KDL-50W800B / KDL-50W805B / KDL-50W807B / KDL-55W700B / KDL-55W790B / KDL-55W800B / KDL-55W805B / KDL-55W807B Service Manual ▷ View online

Chassis: RB2G, HE-L
Chassis: RB2G, HE-L 
25
 
2.1-7 - NO POWER: AYU2L CONTROL
RB2G CHASSIS
W700B/ W800B
Troubleshooting
2-1-7 No Power : Ayu2L control
2-1-7. No Power : Ayu2L control
No Power
No Power
Check 
STBY_+3.3V
at 
AYU2L
(H15, H16, H17 pin
 C7376)
Look for 
AC_MON line 
at 
CN9101 pin12/C9131 or 
Adapter/ Gboard failure
NG
NG
Check 
AC_MON
at 
AYU2
(C11 pin
 C7334)
look for where 
STBY_+3.3V is NG.
 C7376)
Adapter/ Gboard failure
(C11 pin 
 C7334)
Look for 
MAIN_POWER line 
at
CN9101 pin11
NG
Check 
MAIN_PWR
at
AYU2
OK
Check 
STBY_+1.8V
at 
AYU2L
(H19 pin
look for where 
STBY +1 8V is NG
OK
NG
Check 
STBY_+1.0V
at
AYU2L
look for where
at 
CN9101 pin11
or replace 
AYU2
at 
AYU2
(C13 pin 
 C7315)
OK
Adapter/
NG
Check +
19.5V(Adapter)
(H19 pin 
 C7374)
STBY_+1.8V is NG.
OK
NG
at 
AYU2L
(J15, J16, J17 pin 
 C7380)
Check Xtal oscillation
OK
look for where
STBY_+1.0V is NG.
NG
Adapter/
G-board  
NG
Or +12V(G-Board)
at 
CN9101 pin21
NG
Check Xtal oscillation
X7301, 32.768kHz
(A23, B23 pin 
 R7398)
NG
Replace 
X7301 or Ayu2L
OK
OK
It might be power supply problem
Please refer 
"DC/DC converter check" sheet
Or
Check
"STBY LED BLINKING"
Check 
STBY LED BLINKING
Chassis: RB2G, HE-L
Chassis: RB2G, HE-L 
26
RB2G CHASSIS
W700B/ W800B
Troubleshooting
Board
Name
Board PWB ( A side )
Detail
C7376
BAX-L
1. C7376
2. C7374
1, 3, 4
5,6
2
YU
2L
1, 3, 4
C7376
C7380
2
C7374
3. C7380
4. R7396
5  C7334
A
Y
R7396
X7301
5. C7334
6. C7315
R7396
5, 6
C7334
C7334
C7315
Chassis: RB2G, HE-L
Chassis: RB2G, HE-L 
27
RB2G CHASSIS
W700B/ W800B
Troubleshooting
Board
Name
Board PWB ( A side )
Detail
C7376
BAX-L
1. C7376
2. C7374
1, 3, 4
5,6
2
YU
2L
1, 3, 4
C7376
C7380
2
C7374
7. CN9101
3. C7380
4. R7396
5  C7334
A
Y
R7396
X7301
5. C7334
6. C7315
7. CN9101
R7396
5, 6
C7334
7. CN9101
Pin12
C9131
Pin11
C9131
Pin21
C7315
Chassis: RB2G, HE-L
Chassis: RB2G, HE-L 
28
 
2.1-8 - NO POWER: AYU2/AYU2L FAILURE
RB2G CHASSIS
W700B/ W800B
Troubleshooting
2-1-8 No Power– AYU2/AYU2L failure
2-1-8. No Power– AYU2/AYU2L failure
AYU2/L Fail Suspected
p
eMMC / 
RawNAND erase
Product SW rewrite
Recover?
Product SW
writing issue
Yes
Find Some
Error message
AYU2/L LOG is 
displayed
Yes
No
Yes
Check
eMMC / RawNAND
using CheckSW
Check DDR
using CheckSW
Find Some
Error message
No
g
Check error message
It is unacceptable
error? 
(1) Check DDR &
eMMC/ RawNAND
data fail
No
Store SW log,
Check SW 
behaviors.
Y
No
using CheckSW
No
Data fails are
DDR device fail
Yes
From the error 
fi d
Erase & Replace 
eMMC/ RawNAND
Yes
(1) Check  DDR & 
eMMc / RawNAND
interface OK?
Replace  
AYU2/L or Board
No
Yes
Data fails are 
especially in 
environment area.
If this Area has broken, 
check soft cannot run
In this case, corrupted 
data are written to eMMC/ 
NAND flash in proper way
Erase 
eMMC/ RawNAND
message, we can find 
which device has 
failure.
Move to device 
analysis phase.
Product SW write
If still NG after SW rewrite, 
please go to (1) Check 
MMC/RawNAND interface
Replace Board
No
NAND flash in proper way.
So, we have to check the 
logs of exception or errors. 
Erase eMMC/ RawNAND
is a last option. If still NG 
after erase, please replace 
MMC/R
NAND
eMMC/RawNAND
Page of 127
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