Sharp TU-X1U Service Manual page 32

TU-X1U
S-VIDEO: No external input video [INPUT-2]
Is INPUT-2 selected on the input select menu screen?
Select INPUT-2 on the input select menu screen for the right
input signal.
Does the INPUT-2 IN2_Y_PLG detection function?
Check the line between pin (6) of input terminal (J502) and pin
(H33) of IC8001 (CPU).
J502 pin (6)
P1101 pin (22)
SC2202 pin (22)
IC8001 pin (H33)
YES
Are there the S-VIDEO signal inputs at pins (AN17)(Y) and (AN16)(C) of IC8001
(CPU)?
Check the line between pins (3)(Y)/(4)(C) of J502 and pin
(AL17)/(AL16) of IC8001.
J502 pin (3)(Y)
P501 pin (13)
SC2203 pin (13)
IC8001 pin (AL17)
YES
Are the LVDS signal outputs at the LVDS 1st channel and 2nd channel of IC8001
(CPU)?
LVDS_TX_0_DATA0_P/N (C7/B7), LVDS_TX_0_DATA1_P/N (E7/D7),
LVDS_TX_0_DATA2_P/N (C6/B6), LVDS_TX_0_DATA3_P/N (C5/B5),
LVDS_TX_0_DATA4_P/N (E5/D5), LVDS_TX_0_CLK_P/N (E6/D6),
LVDS_TX_1_DATA0_P/N (B4/A4), LVDS_TX_1_DATA1_P/N (E4/D4),
LVDS_TX_1_DATA2_P/N (B3/A3), LVDS_TX_1_DATA3_P/N (B1/B2),
LVDS_TX_1_DATA4_P/N (F5/F6), LVDS_TX_1_CLK_P/N (C2/C3),
YES
Are the LVDS signal inputs at the LVDS 1st channel and 2nd channel of
IC4601(FPGA)?
LVDS_TX_0_DATA0_P/N (T3/R3), LVDS_TX_0_DATA1_P/N (T5/T4),
LVDS_TX_0_DATA2_P/N (R7/T7), LVDS_TX_0_DATA3_P/N (R11/P11),
LVDS_TX_0_DATA4_P/N (T13/R13), LVDS_TX_0_CLK_P/N (P9/N9),
LVDS_TX_1_DATA0_P/N (B14/A14), LVDS_TX_1_DATA1_P/N (B13/A13),
LVDS_TX_1_DATA2_P/N (A9/A10), LVDS_TX_1_DATA3_P/N (A4/A5),
LVDS_TX_1_DATA4_P/N (C3/B3), LVDS_TX_1_CLK_P/N (A8/B8)
YES
Are the Parallel Video Signal inputs at the pins of IC4504 (HDMI_Tx)?
HDMITX_G9-0 pin (71/72/73/74/75/77/78/79/80/81),
HDMITX_B9-0 pin (84/85/86/90/91/92/93/94/95/96),
HDMITX_R9-0 pin (56/57/58/59/60/61/62/63/67/68),
HDMITX_CLK pin (88), HDMITX_DE pin (1), HDMITX_HD pin (2), HDMITX_VD pin
(3)
YES
Does the HOT PLUG detection function?
Is the DDC5V signal output at the pin (18) of SC4501 (HDMI_OUTPUT)?
No video (3)
NO
NO
pin (4)(C)
pin (15)
pin (15)
pin (AL16)
4 – 5
NO Check IC8001 and its peripheral circuits.
(IC8151 thru IC8154, etc.)
NO Check the line between IC8001 and IC4601,
and their peripheral circuits.
NO Check the line between IC4601 and IC4504,
and their peripheral circuits.
NO Check the line between SC4501 and IC4503,
and their peripheral circuits.