Sony GN3UN - HPD Failure Analysis

3f.7.4 HPD Failure Analysis – General Checking
3f.7.4 HPD Failure Analysis
HPD
Failure Analysis
END
Replace Broken
Resistor and Re-verify
[OK] Picture recovered
Check impedance of
Resistor during AC OFF
HDMI1: R4004 and R4005
HDMI2: R4001 and R4007
[NG] Any of the part as below
R4001, R4004≠ 33Ω
R4007, R4005≠ 1KΩ
[OK] Any of the part as below
R4001, R4004 ≈ 33Ω
R4007, R4005 ≈ 1KΩ
Check HPD GPIO Line
impedance to Ground
during AC OFF
HDMI1: CN4001 – Pin 19
HDMI2: CN4000 – Pin 19
Replace B-Board
and Re-Verify
[NG] Impedance ≠ 58kΩ
[OK] Impedance ≈ 58kΩ ±5%
Internal Main IC (SoC)
Broken (IC5000)
Go to
“I2C Failure Analysis“
Page
[NG] No Picture
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
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