KDL-32R435A, KDL-40R485A, KDL-46R485A, KLV-24R402A, KLV-24R422A, KLV-32R402A, KLV-32R407A, KLV-32R422A, KLV-40R452A, KLV-40R457A, KLV-40R472A, KLV-46R452A, KLV-46R472A - Sony TV Service Manual (repair manual). Page 15

Read Sony KDL-32R435A / KDL-40R485A / KDL-46R485A / KLV-24R402A / KLV-24R422A / KLV-32R402A / KLV-32R407A / KLV-32R422A / KLV-40R452A / KLV-40R457A / KLV-40R472A / KLV-46R452A / KLV-46R472A Service Manual online

ITC2
CHASSIS
R402/ R407/ R422/ R435/ R452/ R457/ R472/ R488
Troubleshooting
3 3 Standby LED Blinking
3-3.  Standby LED Blinking
3-3-2.  3-times Blinking 
Remove
S
k
C
t
No 
3x blinking
Speaker impedance 
≠ 6~8 Ω
START
3x blinking
Speaker Connector 
at CN4000 & perform 
AC OFF - ON
3x blinking
Check Speaker harness 
and Speaker impedance
No connectivity for 
speaker harness
Change
Change 
Speaker
Change 
Speaker 
Harness
Connect back 
3x blinking
F4000 broken
Check connectivity 
of F4000.
No connectivity 
of F4000
Speaker Connector to CN4000 
& perform AC OFF - ON
No 3x blinking
3x blinking
& F4000 OK
Audio IC problem,
IC4000 damage
Change BB 
board
15
DONE

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