KDL-32R300C, KDL-32R303C, KDL-32R304C, KDL-32R305C, KDL-32R306C, KDL-32R320C, KDL-32R327C, KDL-40R350C, KDL-40R353C, KDL-40R355C, KDL-40R377C, KLV-32R302C, KLV-40R352C - Sony TV Service Manual (repair manual). Page 16

Read Sony KDL-32R300C / KDL-32R303C / KDL-32R304C / KDL-32R305C / KDL-32R306C / KDL-32R320C / KDL-32R327C / KDL-40R350C / KDL-40R353C / KDL-40R355C / KDL-40R377C / KLV-32R302C / KLV-40R352C Service Manual online

Troubleshooting
3-2. Standby LED Blinking
3-2-2. 3 times blinking
START
Remove
Speaker Connector 
No 3x blinking
Check Speaker harness 
Speaker
Impedance 
≠ 6~8 Ω
3x blinking
p
at CN4001 & perform 
AC OFF ‐ ON
3x blinking
p
And Speaker impedance
No connectivity for speaker harness
F4000 broken, 
Replace F4000
Check connectivity 
of F4000
3x blinking & F4000 OK
Change Speaker 
Harness
Change Speaker
3x blinking
No connectivity of F4000
Replace F4000
Audio IC problem,
IC4001 damage
Connect back 
Speaker Connector
to CN4001
& perform AC OFF ‐ ON
No 3x blinking
Change
B*2 board
Debug NG B*2‐Board
Refer “Audio IC Normal 
Operation Condition –
B*2 Board”
DONE
B*2‐Board”
16
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