- Led Blinking: 3X Dc Alert & Communication Error - Sony KDL-32W700B Service Manual

Troubleshooting
RB2G CHASSIS
2.2-1 - LED BLINKING: 3X DC ALERT & COMMUNICATION ERROR
W700B/ W800B
2-2. Led Blinking 2-2 Led Blinking
2-2-1. 3x (DC Alert & Communication Error)
3-time blinking
DC_ALERT
NG
Check D+1.0V at
JL9003 / JL9127 on
the B* Board th B* B d
OK
Check Check
NG NG
+3.3V_MAIN_1
at JL9117 on
the B* Board
OK OK
NG
Check
+1.8V_MAIN on
Pin 2 of IC9201
OK
Check
NG
+5.0V_MAIN
at JL9113 / JL9112 on t JL9113 / JL9112
the B* Board
Chassis: RB2G, HE-L
DMD_TU_I2C
or I2CB bus check:
Probe CL2101, CL2102 /
CL2318, CL2101 on
F9105,IC9103,
TU* Board
Etc (B Board) Etc (B* Board)
OK
SPIC check
Probe RB8522 / Probe RB8522 /
RB8517
F9104,IC9104,
etc (B* Board)
OK
I2C_CCP check
R8502 and R8506 /
R8546 and R8547
IC9201,etc
(B* Board)
OK
I2CA bus check:
Probe CL5023,
IC9102 / IC9101
,etc (B* Board)
OK
Note: For location details, refer to troubleshooting Reference for parts location.
TUNER
NG
I2C bus dumping or
AYU2 / AYU2L
Brownie
SPI dumping
resistor
or AYU2 / AYU2 /
AYU2L
I2C_CCP
Pull Up
HDMI
NG
I2CA bus
dumping p g
CL5024 CL5024
resistor
or AYU2
Chassis: RB2G, HE-L
AUDIO
Check Check
NG
Speaker Impedance
at SP Connector
OK
Check
Audio +12.5V
NG
at pin 18/20 of CN9101
on the B* Board
(except Adapter model)
OK
Check
F4401 / F4601,
+12.5V / +19.5V
NG
IC4901 / IC4601
at Power Amp side
of F4401 / F4601 on of F4401 / F4601 on
the B* Board
OK
IC4901 / IC4601,etc
(B* Board)
#3
Speaker
G* Board
,etc
(B* Board)
#2
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