Led Blinking 3X (Dc Alert, Audio Error And Communication Error) - Sony KDL-40W900A Service Manual
Rb1g chassis
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Also See for KDL-40W900A:
- Operating instructions manual (60 pages) ,
- Operating instructions manual (36 pages) ,
- Operating instructions manual (32 pages)
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Troubleshooting
3-2. LED Blinking
3-2-1. LED BLINKING 3x (DC Alert, Audio Error & Communication Error)
3-time blinking
DC_ALERT
NG
NG
Check D+1.0V at
Ch
k D 1 0V t
F9105,IC9103,etc
JL9129
(B* Board)
on the B* Board
OK
NG
Check +3.3V_MAIN_1
F9102,IC9102,etc
at JL9116 on
(B* Board)
the B* Board
OK
NG
Check +1.8V_MAIN on
IC9201,etc
Pin 2 of IC9201
(B* Board)
OK
NG
Check +5V_MAIN
IC9101,etc
at JL9132 on
(B* Board)
the B* Board
DMD_TU_I2C
or
I2CB bus check:
I2CB bus check:
Probe CL2205,
CL2206
OK
SPIC check
Probe RB8522
OK
I2C_CCP check
R8502 and
,
R8503
R8503
OK
I2CA bus check:
Probe CL5023,
CL5024
OK
OK
TUNER
NG
I2C bus dumping or
I2C bus dumping or
AYU2
Brownie
SPI dumping
resistor
or AYU2
I2C_CCP Pull
U
Up
HDMI
NG
I2CA bus
dumping
resistor
or AYU2
(*)
Size
B* Board Type
G* Board
OTHERS
JP
40"
BA2-S
BA2-W
46"
BA2-S
BA2-W
55"
BA2-S
BA2-W
AUDIO
Check
NG
Speaker Impedance
Speaker
at SP Connector
OK
Check AUDIO+12.5V
NG
at pin 8/10 of
G* Board
G Board
CN9101 on
the B* Board
OK
Check +12.5V
Check +12 5V
at Power Amp side
NG
F4601,IC4601,etc
of F4601
(B* Board)
on
the B* Board
(Continue) #2
OK
OK
IC4601,etc
(B* Board)
(Continue) #3
RB1G
CHASSIS
W900A/904A/905A
Type
G1A
G1A
G1B
35
- Quick Links:
- Standby Led Error Display
- Led Blinking
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Table of Contents
Troubleshooting
