Sony KDL-46HX823 Service Manual page 68

2) 3 times blinking (DC Alert, Audio Error and Communication Error)
3 times blinking
Check D+1.2V at
pin 14 of IC6005
on the B* Board
OK
Check +3.3V_MAIN
at pins 9/10 of CN9003
the B* Board
OK
Check
Speaker Impedance
at SP Connector
OK
KDL-46/55HX820,823,825(AEP/UK)
DC_ALERT
NG
F6001,IC6005,etc
(B* Board)
NG
F6003,IC6003,etc
(B* Board)
AUDIO
NG
Speaker
Check AUDIO+12.5V
NG
at pins 8/9 of
CN6001 on
the B* Board
OK
NG
Check +12.5V
at F4601 on
the B* Board
OK
FE/BE Communication
IC4601,etc
(B* Board)
TROUBLE SHOOTING
AUDIO
G* Board
F4601,IC4601,etc
(B* Board)
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