Sony KDL-32EX400 Service Manual page 25

2) 3 times blinkings (DC Alert, Audio Error and Communication Error)
3 times Blinkings
Check D+3.3V at
JL3715 or JL3716
on the BAL Board
OK
Check +5V_MAIN
at JL3731 or JL3732 on
the BAL Board
OK
Check
Speaker Impedance
at SP Connector
OK
DC_ALERT
NG
F3700,IC3700,etc
(BAL Board)
NG
F3701,IC3701,etc
(BAL Board)
AUDIO
NG
Speaker
Check +12.5V
at pin 2 of
CN3800 on
the BAL Board
OK
Check +12.5V_AU1
at F4200 on
the BAL Board
OK
Check
X_ASW_PROTECT
at pin 29 of IC5000
on the BAL Board
Pin: High
IC9000,etc
(BAL Board)
25
TROUBLE SHOOTING
AUDIO
NG
G* Board
NG
F4200,IC4200,etc
(BAL Board)
Pin: Low
IC4200,etc
(BAL Board)
FE/BE Communication
KDL-32/40EX400(HK/WB/GA)