Sharp LC-60E77UN Service Manual page 54

LC-60E77UN/LC-65E77UM/LC-C6077UN/LC-C6577UM
HDMI: No external input video [INPUT-5]
Is INPUT-5 selected on the input select menu screen?
NO
Select INPUT-5 on the input select menu screen for the
right input signal.
YES
Does the HOT PLUG detection function?
Does the DDC5V signal come from pin (18) of SC1601 to pin (36) of
IC1605 (HDMI_SW1)?
NO
Check the line between the input terminals of SC1601
and IC1605.
Check IC1605 and its peripheral circuits
(SDA1: pin53 of IC1605/SCL1: pin54 of IC1605, etc.).
YES
Does the HPD signal come from pin (35) of IC1605 to pin (19) of
SC1601?
NO
Check the line between the pin (35) of IC1605 and the
pin (19) of SC1601.
Check IC1605 and its peripheral circuits
(SDA1: pin53 of IC1605/SCL1:pin54 of IC1605, etc.).
YES
Are there the TMDS signal inputs at pins (1/2) (CLK-/+), (3/4) (D0-/
+), (5/6) (D1-/+), (7/8) (D2-/+), all of IC1605?
NO
Is IC1605 (pin33/pin34) accessed by I2C, with HDMI
connected, to read the DDC_I2C SDA/SCL data?
NO
Check the DDC line and its peripheral circuits
(IC1605 and its peripherals).
YES
Are there the TMDS signal inputs at pins (AJ6/AK6) (CLK-/+), (AJ7/AK7) (D0-/+), (AJ8/
AK8) (D1-/+), (AJ9/AK9) (D2-/+), all of IC8001 (CPU)?
YES
Are the LVDS signal outputs at the LVDS 1st channel and 2nd channel of IC8001?
LVDS_TX_0_DATA0_P/N (C14/D14), LVDS_TX_0_DATA1_P/N (C15/D15),
LVDS_TX_0_DATA2_P/N (C16/D16), LVDS_TX_0_DATA3_P/N (C18/D18),
LVDS_TX_0_DATA4_P/N (C19/D19), LVDS_TX_0_CLK_P/N (C17/D17),
LVDS_TX_1_DATA0_P/N (A14/B14), LVDS_TX_1_DATA1_P/N (A15/B15),
LVDS_TX_1_DATA2_P/N (A16/B16), LVDS_TX_1_DATA3_P/N (A18/B18),
LVDS_TX_1_DATA4_P/N (A19/B19), LVDS_TX_1_CLK_P/N (A17/B17).
YES
Check the panel module.
<HDMI input> No video (6)-1
Is INPUT-7 selected on the input select menu screen?
YES
Does the HOT PLUG detection function?
Does the DDC5V signal come from pin (18) of SC1602 to pin (42) of
IC1605 (HDMI_SW1)?
YES
Does the HPD signal come from pin (41) of IC1605 to pin (19) of
SC1602?
YES
Are there the TMDS signal inputs at pins (11/12) (CLK-/+), (13/14)
(D0-/+), (15/16) (D1-/+), (17/18) (D2-/+), all of IC1605?
YES
6 – 6
HDMI: No external input video [INPUT-7]
NO
Select INPUT-7 on the input select menu screen for the
right input signal.
NO
Check the line between the input terminals of SC1601
and IC1605.
Check IC1605 and its peripheral circuits
(SDA1: pin53 of IC1605/SCL1: pin54 of IC1605, etc.).
NO
Check the line between the pin (41) of IC1605 and the
pin (19) of SC1601.
Check IC1605 and its peripheral circuits
(SDA1: pin53 of IC1605/SCL1: pin54 of IC1605, etc.).
NO
Is IC1605 (pin39/pin40) accessed by I2C, with HDMI
connected, to read the DDC_I2C SDA/SCL data?
NO
Check the DDC line and its peripheral circuits
(IC1605 and its peripherals).
NO Check IC1605, IC8001 and their peripheral
circuits.
NO Check IC8001 and its peripheral circuits
(IC8152/IC8153, etc.).