Sharp LC-60LE660U Service Manual page 40

LC-60/70LE660U,C6600U
Is HDMI1 selected on the input select menu screen?
Does the HOT PLUG detection function?
Does the DDC5V signal come from pin(18) of SC1501 to R1503?
Does the HPD signal come from pin(120) of IC3301 to pin(19) of
SC1501?
Is IC3301(CPU) accessed by I2C, with HDMI connected, to read
the DDC-I2C SCL/SDA data?
Are there the TMDS signals at input pins of IC3301(CPU)?
Check the HDMI cable and connected equipment condition.
HDMI:No external input video [INPUT-1]
YES
YES
YES
YES
YES
No video (1)-1
NO Select HDMI1 on the input select menu screen for the right input sig-
nal.
NO Check the line between the pin(18) of SC1501 and R1503.
NO Check the line between the pin(19) of SC1501 and the pin(120) of
IC3301.
NO Check the DDC-I2C line and its peripheral circuits..
(1)SC1501 pin(15)(SCL), pin(16)(SDA)
(2)IC3301 pin(121), pin(122)
NO Check the TMDS line (between SC1501 and IC3301) and its periph-
eral circuits.
[IC3301 TMDS input pins]
pin(151/152)(CLK-/+), pin(153/154)(D0-/+),
pin(155/156)(D1-/+), pin(157/158)(D2-/+).
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