Sony KD-43X7 G Series Service Manual page 65

2.6.14 HDMI No Picture
2.6.14.3 HPD Failure Analysis – HDMI1 and HDMI3
HPD
Failure Analysis
Check impedance of
Resistor during AC OFF
HDMI1: R4016, R4019 and R4022
HDMI3: R4015, R4018 and R4021
[NG] Any of the part as below
R4021, R4022≠ 4.7KΩ
R4015,R4016, R4018, R4019≠ 1KΩ
Replace Broken
Resistor and Re-verify
[OK] Picture recovered
END
[OK] All part as below
R4021, R4022 ≈ 4.7KΩ
R4015,R4016, R4018, R4019 ≈ 1KΩ
[NG] Impedance ≠ 100kΩ ±5%
[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
impedance to Ground
during AC OFF
HDMI1: R4019*
HDMI3: R4018*
Internal Main IC (SoC)
Broken (IC5000)
Replace B-Board
and Re-Verify
[OK] Impedance ≈ 100kΩ ±5%
Go to
"I2C Failure Analysis"
Page
65
SYS SET