Sharp TU-X1U Service Manual page 33

YES
Does the HPD signal come from pin (19) of SC4501 (HDMI_OUTPUT) to pin (51) of
IC4504 (HDMI_Tx)?
YES
Are there the TMDS signal outputs at pins (12/10)(CLK-/+), (9/7)(D0-/+), (6/4)(D1-/+),
(3/1)(D2-/+), all of SC4501 (HDMI_OUTPUT)?
YES
Check the HDMI cable and Monitor Unit.
NO
NO
4 – 6
Check the line between SC4501 and IC4504,
and their peripheral circuits.
Check the HDMI cable and Monitor Unit.
Check the line between SC4501 and IC4504,
and their peripheral circuits.
TU-X1U