Sony KD-43X7 G Series Service Manual page 109

2.8.2 Troubleshooting Detail Audio Problem
2.8.2.6 HDMI ARC Failure
Confirm Source (Player)
ARC Condition/Capability
[OK] Source Support ARC &
ARC Source function Normally
Bravia Sync (CEC)
[OK] CEC Setting On
Factory Reset &
Change Proven OK
[NG] ARC not functioning
appearance Check On
HDMI connector
[OK] Connector no abnormality
Check impedance
Of R4018 Resistor
during AC OFF
[OK] R4036 ≈ 180Ω ±5%
HDMI ARC
Not Function
[NG] Source Not Support ARC /
ARC Source not function Normally
[NG] ARC not functioning
[NG] CEC setting Off
TV setting
[OK] ARC functioning
HDMI cable
Physical
[NG] Connector abnormal
[NG] ARC not functioning
[NG] R4036 ≠ 180Ω
[NG] ARC not functioning
Checking condition:
- TV ON & HDMI Source ON except if the flow mentioned is AC
OFF.
- TV HDMI input connected to HDMI source (Player etc.)
- TV Input Selection: HDMI
Change to ARC
Compatible source
Turn TV Bravia Sync
"On"
[OK] ARC functioning
HDMI Connector Broken.
Replace & Re-verify
[OK] ARC functioning
Resistor Broken.
Replace & Re-verify
Replace B-Board
And Re-verify
[OK] ARC functioning
END
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SYS SET