Sony XBR-55X850D Service Manual page 38

FLOW
3-1. NO SOUND
No Sound
Without LED 3x
AV receiver is connected Yes
to HDMI in ?
No
Yes
[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
3-3 Power Off Checking
XBR-55X850D/857D, 65X850D/855D/857D, 75X850D
Select [External Inputs]
[BRAVIA Sync Settings]
[BRAVIA Sync Control] [off]
Change the setting to
[TV Speakers]
Yes
Disconnect the Headphone
Change [Sound]
[Headphone Speaker Link]
Yes
to [Off], OK ?
Yes
Replace B Board
HP/Audio out terminal or Headphone detect
GPIO may be broken
No sound only
Analog RF and Digital RF ?
No
No sound only HDMI ?
No
Go to
3-2 No Sound Audio
No
TROUBLE SHOOTING
Yes Go to
3-6 No Sound Tuner
Go to
Yes
3-7 No Sound HDMI
38