Led Blinking - Sony KDL-32W700B Service Manual

Troubleshooting

3-2. LED BLINKING

3-2-1. LED Blinking: 3x (DC Alert & Communication Error)
3-times blinking
DC ALERT DC_ALERT
NG
Check D+1.0V at
F9105,IC9103,
JL9003 / JL9127 on
Etc (B* Board)
the B* Board
OK
Check
NG
+3 3V MAIN 1 +3.3V_MAIN_1
F9104,IC9104,
at JL9117 on
etc (B* Board)
the B* Board
OK
NG
Check
+1.8V_MAIN on
Pin 2 of IC9201
OK
Check
NG
+5.0V_MAIN
IC9102 / IC9101
at JL9113 / JL9112 on
etc (B* Board)
the B* Board
Change TUS/TUW
OK
IC9201,etc
(B* Board)
( )
NG
Board
TUNER Board
W700B/ W705B/ W706B/ W707B/ W708B/ W790B
W800B/ W805B/ W807B/ W808B/ W815B/ W817B/ W828B/ W829A
AUDIO
Check
NG
Speaker Impedance Speaker
at SP Connector
OK
Check
Audio +12.5V
NG
at pin 18/20 of CN9101
G* Board
on the B* Board
(except Adapter
model)
OK OK
Check
F4401 / F4601,
+12.5V / +19.5V
NG
IC4901 / IC4601
at Power Amp side
of F4401 / F4601 on
(B* Board)
the B* Board the B* Board
OK
IC4901 / IC4601,etc
(B* Board)
Note :
-B Board – BAXL Board -B* Board – BAXL Board
-G*Board- Not applicable
-TUS Board (Others) / TUW Board (Japan)
RB2G CHASSIS
W855B/ W857B
,etc
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