Sony XBR-55X900H Service Manual page 55

2020/06/27 06:31:32 (GMT+09:00)
3.1 No Sound for 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
and
More than 3Ω ?
OK
Confirm the speaker
harness
Cut or shorted
to the chassis ?
OK
Replace B-PWB
then OK ?
Still NG
Replace G-PWB and G-B Harness
SECTION 1
T R O U B L E S H O O T I N G
※
NG
Replace Speaker
Then OK?
NG
NG
Replace Speaker-Harness
Then OK?
NG
OK
OK
SECTION 2 SECTION 3
S E C T I O N 3
※
This confirmation way is only for traditional speaker & exciter.
In PIEZO Tweeter case, we can confirm OK or NG
by listening actually.
OK
OK
Finish
SECTION 4 SECTION 5 SECTION 6
55
SYS SET