Hpd Failure Analysis – Hdmi2 - Sony KD-43XE7 Series Service Manual

3.7.4 HPD Failure Analysis – HDMI2
HPD
Failure Analysis
Check impedance of
Resistor during AC OFF
HDMI2: R4043
[NG] Resistance ≠4.7 Ω
Replace Broken
Resistor and Re-verify
[OK] Picture recovered
END
[OK] Resistance ≈ 4.7 Ω
[NG] No Picture
*Please refer page 10 for actual measuring points
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
Check HPD GPIO Line
[OK] Impedance ≈ Open (High Z)
impedance to Ground
during AC OFF
HDMI2: R4043*
[NG] Impedance not Open (High Z)
Internal Main IC (SoC)
Broken (IC5000)
Replace B-Board
and Re-Verify
Go to
"I2C Failure Analysis"
Page
61
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