Sharp TU-X1U, Руководство по обслуживанию

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TU-X1U
4 – 13
<HDMI input> No video (7)
HDMI: No external input video [INPUT-7] HDMI: No external input video [INPUT-8]
Is INPUT-7 selected on the input select menu screen? Is INPUT-8 selected on the input select menu screen?
YES
NO
YES
NO
Select INPUT-7 on the input select menu screen for the
right input signal. Select INPUT-8 on the input select menu screen for
the right input signal.
Does the HOT PLUG detection function? Does the HOT PLUG detection function?
Does the DDC5V signal come from pin (18) of SC1701
to pin (32) of IC1701 (HDMI_SW2)? Does the DDC5V signal come from pin(18) of SC1702
to pin (52) of IC1701 (HDMI_SW2)?
YES
NO
YES
NO
Check the line between the input terminals
of SC1701 and IC1701. Check the line between the input termi-
nals of SC1702 and IC1701.
Does the HPD signal come from pin (16) of IC1701 to pin
(19) of SC1701? Does the HPD signal come from pin (36) of IC1701 to
pin (19) of SC1702?
NO NO
Check the line between IC1701 and
SC1701, and their peripheral circuits.
(Q1701, etc.) Check the line between IC1701 and
SC1702, and their peripheral circuits.
(Q1702, etc.)
Are there the TMDS signal inputs at pins (18/19)(CLK-/+), (21/
22)(D0-/+), (24/25)(D1-/+), (27/28)(D2-/+), all of IC1701
(HDMI_SW2)? Are there the TMDS signal inputs at pins (38/39)(CLK-/+), (41/
42)(D0-/+), (44/45)(D1-/+), (47/48)(D2-/+), all of IC1701
(HDMI_SW2)?
YES
NO
YES
NO
Is IC1703 (EEPROM) accessed by I2C, with HDMI con-
nected, to read the DDC_I2C SCL/SDA data? Is IC1704(EEPROM) accessed by I2C, with HDMI
connected, to read the DDC_I2C SCL/SDA data?
NO NO
Check the DDC line and its peripheral cir-
cuits. (IC1701, IC1703 and its peripherals). Check the DDC line and its peripheral
circuits. (IC1701, IC1704 and its periph-
erals).
Are there the TMDS signal inputs at pins (58/59)(CLK-/+), (61/62)(D0-/+), (64/65)(D1-/+),
(67/68)(D2-/+), all of IC1604 (HDMI_SW1)? NO Check IC1604, IC1701 and their periph-
eral circuits.
YES
Are there the TMDS signal inputs at pins (39/40)(CLK-/+), (43/44)(D0-/+), (47/48)(D1-/+),
(51/52)(D2-/+), all of IC1502 (HDMI_Rx)? NO Check IC1502, IC1604 and their periph-
eral circuits.
YES
Are there the HD_DIV[29:0],HD_DVI_CLK_P,HD_DVI_VSYNC,HD_DVI_HSYNC,
HD_DVI_DE signal inputs to IC8001?
HD_DVI
29-20 (AN10/AL11/AM10/AN9/AL10/AM9/AN8/AP8/AP7/AL9),
19-10 (AM8/AH11/AJ10/AH10/AJ15/AH9/AK8/AH7/AK9/AM7),
9-0 (AN6/AL8/AL7/AN5/AP5/AM6/AL6/AP4/AN4/AM5),
HD_DIV_CLK (AK10), HD_DVI_DE (AH12),
HD_DVI_HSYNC (AK11), HD_DVI_VSYNC (AH13) NO Check the line between IC1502 and
IC8001, and their peripheral circuits.
YES