Sony KDL-48W6*D, Service Manual, Page: 83 / 153

Check impedance of
series resistor
at SCL & SDA
during AC OFF
HDMI1:
R3608 (SCL) & R3610 (SDA)
HDMI2:
R3618 (SCL) & R3617 (SDA)
Series Resistor Broken
Replace → Re-verify
[NG] Impedance ≠ 100Ω
[NG] No picture
Check voltage of SCL & SDA line
HDMI1:
Pin15 (SCL) Pin 16 (SDA) @ CN3601
HDMI2:
Pin15 (SCL) Pin 16 (SDA) @ CN3600
Go to
“I2C Failure Analysis"
[NG] Vdc ≠ 3.5 ~ 5.5V
Check voltage @ TMDS lines
HDMI1:
Pin1,3,4,6,7,9,10 & 12 @ CN3601
HDMI2:
Pin1,3,4,6,7,9,10 & 12 @ CN3600
Go to
"TMDS Failure Analysis"
[NG] Vdc ≠ 2.6 ~ 3.475V
Replace B-board & re-verify
Escalate this issue to
R&D team
[OK] Impedance = 100Ω
[OK] Vdc = 3.5 ~ 5.5V
[OK] Vdc = 2.6 ~ 3.475V
Main Flow Continue
END
[OK] Picture recovered
Checking condition:
- TV ON & HDMI Source ON except if the flow mentioned is AC OFF.
- TV HDMI input connected to HDMI source output
- TV Input: HDMI
1. HDMI NO PICTURE
3-3-11. HDMI No Picture – Continue (b)
83