Sharp TU-X1U Service Manual page 29

Does the HOT PLUG detection function?
Is the DDC5V signal output at the pin (18) of SC4501 (HDMI_OUTPUT)?
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
NO
4 – 2
TU-X1U
Check the line between SC4501
and IC4503, and their periph-
eral circuits.
Check the line between SC4501
and IC4504, and their periph-
eral circuits.
Check the HDMI cable and
Monitor Unit.
Check the line between SC4501
and IC4504, and their periph-
eral circuits.