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
29
2.1-9 - NO POWER: AYU2/ AYU2L REPLACEMENT
RB2G CHASSIS
W700B/ W800B
Troubleshooting
2-1-9 No Power – AYU2/ AYU2L replacement
2-1-9. No Power – AYU2/ AYU2L replacement
AYU2/L
replacement flow
AYU2/L replacement
eMMC / RawNAND erase
Data on eMMC/NAND
need to be erase first
before changing AYU2/L.
need to be erase first
before changing AYU2/L.
Product SW write
Recover?
No
Board Issue
Recover?
AYU2/L issue
Yes
Board Issue
AYU2/L issue
Chassis: RB2G, HE-L
Chassis: RB2G, HE-L
30
2.2-1 - LED BLINKING: 3X DC ALERT & COMMUNICATION ERROR
RB2G CHASSIS
W700B/ W800B
Troubleshooting
2-2 Led Blinking
TUNER
3-time blinking
2-2-1. 3x (DC Alert & Communication Error)
Note: For location details, refer to troubleshooting Reference for parts location.
2-2. Led Blinking
Check
AUDIO
I2C bus dumping or
AYU2 / AYU2L
NG
Check D+1.0V at
JL9003 / JL9127 on
th B* B
d
F9105,IC9103,
Etc (B* Board)
DC_ALERT
NG
DMD_TU_I2C
or I2CB bus check:
Probe CL2101, CL2102 /
CL2318, CL2101 on
TU* Board
Speaker
Check
Speaker Impedance
at SP Connector
NG
OK
Brownie
the B* Board
Etc (B Board)
Check
OK
NG
SPIC check
Probe RB8522 /
OK
SPI dumping
resistor
AYU2 /
Check
Audio +12.5V
at pin 18/20 of CN9101
on the B* Board
(except Adapter model)
G* Board
NG
OK
Check
+3.3V_MAIN_1
at JL9117 on
the B* Board
F9104,IC9104,
etc (B* Board)
etc (B* Board)
NG
OK
Probe RB8522 /
RB8517
or AYU2 /
AYU2L
Check
+12.5V / +19.5V
at Power Amp side
of F4401 / F4601 on
F4401 / F4601,
IC4901 / IC4601
,etc
OK
NG
I2C_CCP check
R8502 and R8506 /
R8546 and R8547
I2C_CCP
Pull Up
OK
Check
+1.8V_MAIN on
Pin 2 of IC9201
IC9201,etc
(B* Board)
NG
of F4401 / F4601 on
the B* Board
(B* Board)
IC4901 / IC4601,etc
(B* Board)
OK
#2
I2CA bus check:
Probe CL5023,
CL5024
I2CA bus
dumping
NG
HDMI
OK
NG
Check
+5.0V_MAIN
t JL9113 / JL9112
OK
IC9102 / IC9101
#3
CL5024
p g
resistor
or AYU2
OK
at JL9113 / JL9112 on
the B* Board
,etc (B* Board)
Chassis: RB2G, HE-L
Chassis: RB2G, HE-L
31
RB2G CHASSIS
W700B/ W800B
Troubleshooting
Board
Name
Board PWB (A side)
Detail
BAX
(F9104)
F9104
BAXL
(F9104)
F9104
BAX
(IC9104)
IC9104
Chassis: RB2G, HE-L
Chassis: RB2G, HE-L
32
RB2G CHASSIS
W700B/ W800B
Troubleshooting
Board
Name
Board PWB
Detail
BAXL
(IC9104)
IC9104
BAX
(IC9201)
IC9201
B-Side
BAXL
(IC9201)
IC9201
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