Sony XBR-55X900C Service Manual page 133

3) Power Off Checking*3
No Sound
Without LED 3x
AV receiver is connected
to HDMI in ?
No
[Speakers] setting is
[Audio System] ?
No
Headphone is connected to
HP/Audio Out terminal ?
No
[Sound]→
[Headphone Speaker Link]
setting is [On] ?
No
Go to
Power Off Checking*1
XBR-55/65X900C, 905C, 907C
Select [External Inputs]→
Yes
[BRAVIA Sync Settings]→
[BRAVIA Sync Control]→[off]
Yes Change the setting to
[TV Speakers]
Yes
Disconnect the Headphone
Change [Sound]→
[Headphone Speaker Link]
Yes
to [Off], OK ?
No
Replace B-PWB
HP/Audio out terminal or Headphone detect
GPIO may be broken
Analog RF and Digital RF ?
No sound only HDMI ?
Yes
TROUBLE SHOOTING
No sound only Yes
No Sound Tuner
No
Yes
No Sound HDMI
No
Go to
No Sound Audio
Go to
Go to
133