Advertisement
2019/01/30 02:46:26 (GMT+09:00)
6.7.5 I2C Failure Analysis
6.7.5 I2C Failure Analysis – General Checking
Failure Analysis
Check impedance of
Resistor during AC OFF
[NG] Impedance ≠ 47kΩ
resistor and re-verify
[OK] Picture recovered
I2C
[OK] Impedance≈ 47kΩ
HDMI1: RB4004
HDMI2: RB4005
[NG] No Picture
Replace broken
END
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 I2C GPIO Line
impedance to Ground
during AC OFF
HDMI1: CN4001 – Pin15&16
HDMI2: CN4000 – Pin15&16
[NG] Impedance ≠ 105kΩ
Internal Main IC (SoC)
Broken (IC5000)
Replace B-Board
and Re-Verify
[OK] Impedance ≈ 105kΩ ±5%
Go to
"TMDS Failure Analysis"
Page
75
SYS SET
Advertisement
