Sony Bravia KDL-43WG6 Series, Service Manual

Page: 23 / 151

2.0 : 3x Blinking
– Audio Error
LKP Board
Important Note :
TV must be power OFF condition before plug or unplug any of
the FFC/FPC/wire/cable from the board. -> This is to prevent
possibility circuit damage happen.
(F4001 or F4002)
broken, Replace
(F4001 or F4002)
Remove Speaker Connector
at CN4001 and
perform AC OFF - ON
Check connectivity
of (F4001 or F4002)
3x blinking
Check Speaker harness and
Speaker impedance
Main Speaker
Impedance ≠ 6~8 Ω
#Audio IC (IC4001) problem
Change
Speaker
Harness
Change Main
Speaker
START
Connect back
Speaker Connector
to CN4001 and
perform AC OFF - ON
DONE
3x blinking
No 3x blinking
Change LKP-
board
No connectivity of (F4001 or F4002)
Speaker harness
shorted
No 3x blinking
3x blinking &
(F4001 or F4002) OK
3x blinking
Change B-board
No 3x blinking
Disconnect B-board to LKP-board
FFC and check Audio Error pin
Audio Error pin no short to GND
B-board Audio Error pin
short to GND
Check FFC correct insert? Insert FFC correctly
3x blinking
FFC not insert correctly
LKP-board Audio Error pin
short to GND
3x blinking & (F4001 or F4002) OK
3x blinking
23
SYS SET
2019/01/30 02:46:26 (GMT+09:00)