Sony KLV-22EX300 Service Manual page 61

3-2-8. Flowchart H - USB Audio No Sound
Change USB
thumbdrive
Change to
supported
format
3-2-9. Flowchart I - 3x Blinking For Audio Error
OK
Speaker Impedance
7~8ohm, ok?
OK NG
Change
Change
main
speaker
speaker
wire
NG
Refer "Standby
LED Blink"
USB Audio
input no sound
OK
NG
USB thumbdrive,
ok?
OK
NG
*USB audio
format, ok?
OK
Change BAA Board
TV 3x blinking
Remove speaker
connector (CN4000), ok?
NG
F4001
Ok?
OK
CN6200 pin1, 12.6V ok?
OK
Check impedance
CN6200 pin1 <-> C4049 (+ve)
CN6200 pin1 <-> C4050 (+ve)
Low Z
(~0ohm)
B
– 61 –
KLV-22, 26, 32 EX300, 32, 40, 46 EX400
* Please refer to IM for supported USB
audio format.
B
L4004, L4005, L4006 &
L4007 impedance to ground.
Low Z
NG
(<100Kohm)
Output short to
GND / Amp IC
NG
High Z
(>0ohm)
Change BAA Board
RM-GA019
High Z
(>100Kohm)
Amp IC NG