No Sound; Tv Commander And Keys Malfunction - Sony KDL-22EX420 Service Manual

Trouble Shooting

3-5. No Sound

No Sound
Audio System
Check the
Speakers setting
TV Speakers
NG
Change the Speaker
Harness
Symptom
improvement
Speaker Harness
Change to
TV Speaker
Symptom
improvement
Replace
B* Board
the B* Board
NG
Speaker
Note: B* Board
Segment
P-1
P-1
P-1
P-1
P-1
KDL- 22 EX423, 26 EX423, 32 EX420, 32, 40, 46 EX523
3-6. TV Commander & Keys Malfunction
3-6-1. TV key Malfunction
Button malfunction
on the TV
NG
Replace the harness
between B*
to Switch Unit
Symptom
improvement
Harness
Size B* Board Type
22 BAT-S
26 BAT-S
32 BAT-V
40 BAT-V
46 BAT-V
30
KDL- 22, 26 EX420, 32,40,46 EX520
RM-GD020, CD013
Symptom
improvement
Switch Unit
Switch Unit change
NG
B* Board
RM-GD020