Measure The Speaker Ok; Impedance By Multi-Meter; Less Than 10Ω And More Than 3Ω; Replace Ng Speaker - Sony XBR-55X900H Service Manual

2021/04/27 23:25:57 (GMT+09:00)
3.1 No Sound for Speaker
No Sound
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 and
More than 3Ω ?
OK
Confirm the speaker
Cut or shorted
to the chassis ?
OK
Replace B-PWB
then OK ?
Still NG
Replace G-PWB and G-B Harness
SAFETY NOTES

Speaker

※
NG
harness NG
OK
OK
SELF DIAGNOSTIC FUNCTION
T R O U B L E S H O O T I N G
※
OK
Replace Speaker
Then OK?
NG
OK
Replace Speaker-Harness
Then OK?
NG
TROUBLESHOOTING SERVICE ADJUSTMENT
This confirmation way is only for traditional speaker & exciter.
In PIEZO Tweeter case, we can confirm OK or NG
by listening actually.
Finish
DIAGRAM
48
HANDLING GUIDE
SYS SET