Sony XR-77A80L - Page 90

90
TROUBLESHOOTING
3.1 No Sound for Speaker – XR-*A75L
No Sound
Speaker
Replace B-Board
Then OK ?
Replace G-Board and G-Board Harness
Still NG
NO
Check reading measurement by using
multi-meter within this range?
Speaker = 5.1Ω ~ 6.9Ω
Piezo = 2140 ~ 3210
Check
・[Speakers] setting is [TV Speakers]?
・Nothing is connected to Headphone terminal and Bluetooth ?
・Volume setting is not too small?
YES
Finish
Replace
Speaker/Piezo
Then OK?
NG
OK
NG
OK
OK
NG
NG
Replace Speaker/
Piezo Harness
Then OK?
Confirm the Speaker/Piezo
Cut or Shorted to the chassis ?
OK
OK
Factory Reset
Then OK?
Others TV settings correct?
OK
NG
OK
No sound only
Analog or Digital RF ?
Go to
3.7 No Sound Tuner
No sound only
HDMI ?
Go to
3.8 No Sound HDMI
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※
This confirmation way is only for traditional speaker & exciter.
In PIEZO Tweeter case, we can confirm OK or NG
by listening actually.
SYSSET
2023/11/2806:39:49(GMT+09:00)