Sony KD-43X7 H Series Service Manual page 47

2020/12/12 02:35:59 (GMT+09:00)
2.2.1 : 3x Blinking – Audio Error
No connectivity of
(F3101 or F3102)
(F3101 or F3102) broken,
Replace (F3101 or F3102)
3x blinking
No 3x blinking
SAFETY NOTES SELF DIAGNOSTIC FUNCTION
T R O U B L E S H O O T I N G
B-board Audio Error pin
short to GND
3x blinking &
(F3101 or F3102) OK
(For example, fuse broken,
e.capacitor blow,
c.capacitor short connection,
inductor open connection
and etc.)
TROUBLESHOOTING
S E C T I O N 3
START
3x blinking
Disconnect power supply
and check Audio Error pin
Audio Error pin
no short to GND
Remove Speaker Connector
at CN3101 and
No 3x blinking
perform AC OFF - ON
3x blinking
3x blinking
Check connectivity
of (F3101 or F3102)
3x blinking &
(F3101 or F3102) OK
Check Audio IC pins and
surrounding part,
replace any NG part found
3x blinking
Check have any burn mark on
Audio IC. If have burn mark,
replace the NG Audio IC
3x blinking
Change B-board
No 3x blinking
DONE
SERVICE ADJUSTMENT
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.
Check Speaker harness and
Speaker impedance
Speaker harness
Broken
Change Speaker
Harness
Connect back
Speaker Connector to CN3101 and
perform AC OFF - ON
No 3x blinking
DIAGRAMS PANEL HANDLING
Main Speaker
Impedance ≠ 6~8 Ω
Change Main
Speaker
47
FACTORY DATA RESET
SYS SET