Sony XR-55A95K Service Manual page 40

TROUBLESHOOTING
3.1 No Sound – Speaker
No Sound
Speaker
Check
・[Speakers] setting is [TV Speakers]?
・Nothing is connected to Headphone terminal and Bluetooth ?
・Volume setting is not too small?
OK
Measure the Speaker
impedance by multi-meter
less than 10Ω & more
than 3Ω(AR/APH 3.6) ?
OK
Confirm the speaker
harness
Cut or shorted
to the chassis ?
OK
Replace B-PWB
Still NG
Replace G(LD5)-PWB and G(LD5)-B Harness
※
NG
Replace Speaker
NG
NG
Replace Speaker-Harness
NG
OK
OK
This confirmation way is only for traditional speaker & exciter.
In PIEZO Tweeter case, we can confirm OK or NG by listening.
※
OK
OK
Finish
40
SYS SET