Sharp LC-60LE660U Service Manual page 42

LC-60/70LE660U,C6600U
Is HDMI3 selected on the input select menu screen?
YES
Does the HOT PLUG detection function?
Does the DDC5V signal come from pin(18) of SC1503 to
pin(38) of IC1503(POW-SW)?
YES
Does the HPD signal come from pin(132) of IC3301 to
pin(19) of SC1503?
YES
Is IC3301(CPU) accessed by I2C, with HDMI connected,
to read the DDC-I2C SCL/SDA data?
YES
Are there the TMDS signals at input pins of IC3301(CPU)? NO
YES
Check the HDMI /MHL cable and connected equipment
condition.
No video (1)-3
HDMI:No external input video [HDMI3]
NO Select HDMI3 on the input select menu screen for the right input signal.
NO Check the line between the pin(18) of SC1503 and the pin(6) of IC1503.
NO Check the line between the pin(19) of SC1503 and the pin(132) of IC3301.
NO Check the DDC-I2C line and its peripheral circuits..
(1)SC1503 pin(15)(SCL), pin(16)(SDA)
(2)IC3301 pin(115), pin(116)
Check the TMDS line (between SC1503 and IC3301) and its peripheral cir-
cuits.(IC1503 etc)
[IC3301 TMDS input pins]
pin(135/136)(CLK-/+), pin(137/138)(D0-/+),
pin(139/140)(D1-/+), pin(141/142)(D2-/+).
6 – 8