Sharp LC-40LE820E Service Manual page 67

Is the Hot plug detection function output from pin (19) of the
HDMI-1 (SC1503) normal?
Is the Hot plug detection function output from pin (19) of the
HDMI-2 (SC1502) normal?
Is the Hot plug detection function output from pin (19) of the
HDMI-3 (SC1501) normal?
Is the Hot plug detection function output from pin (19) of the
HDMI-4 (SC1505) normal?
Is EDID data pins (44/HDMI1_SCL), (43/HDMI1_SDA) of IC1504
accessed, and is it read from pins (15, 16) of a HDMI-1
(SC1503)?
Is EDID data pins (40/HDMI2_SCL), (39/HDMI2_SDA) of IC1504
accessed, and is it read from pins (15, 16) of a HDMI-2
(SC1502)?
Is EDID data pins (34/HDMI3_SCL), (33/HDMI3_SDA) of IC1504
accessed, and is it read from pins (15, 16) of a HDMI-3
(SC1501)?
Is EDID data pins (30/HDMI3_SCL), (29/HDMI3_SDA) of IC1504
accessed, and is it read from pins (15, 16) of a HDMI-4
(SC1505)?
Is TMDS signal input into pins (20, 19/HDMI1_CLKP/N), (22,21/
HDMI1_D0P/N), (24, 23/HDMI1_D1P/N), (26, 25/HDMI1_D2P/N)
of IC1504 from HDMI-1 (SC1503)?
Is TMDS signal input into pins (12, 11/HDMI2_CLKP/N), (14, 13/
HDMI2_D0P/N), (16, 15/HDMI2_D1P/N), (18, 17/HDMI2_D2P/N)
of IC1504 from HDMI-2 (SC1502)?
Is TMDS signal input into pins (2, 1/HDMI3_CLKP/N), (4, 3/
HDMI3_D0P/N), (6, 5/HDMI3_D1P/N), (8, 7/HDMI3_D2P/N) of
IC1504 from HDMI-3 (SC1501)?
Is TMDS signal input into pins (66, 65/HDMI4_CLKP/N), (68, 67/
HDMI4_D0P/N), (70, 69/HDMI4_D1P/N), (72, 71/HDMI4_D2P/N)
of IC1504 from HDMI-4 (SC1505)?
Are TMDS_Rx and the I2C_SINK signal output from IC1504
respectively?
Pins (62, 63/SW_TMDS_CLKP/N), (60, 61/SW_TMDS_D0P/N),
(58, 59/SW_TMDS_D1P), (56, 57/SW_TMDS_D2P)
Is the TMDS_Rx/ I2C_SINK signal input to IC3302 (Digital AV
decode & Main CPU)?
Pins (AK6, AJ6/SW_TMDS_CLKP/N), (AK7, AJ7/
SW_TMDS_D0P/N), (AK8, AJ8/SW_TMDS_D1P/N), (AK9, AJ9/
SW_TMDS_D2P/N) from IC1504
Refer to "The picture doesn't appear in all modes." or "No sound
output in all modes."
[External input HDMI-1/2/3/4] No picture on the display (10)
Does not the picture/sound of the HDMI signal input to HDMI-1/2/3/4 go out?
YES
YES
YES
YES
YES
NO Check the line between SC1503 and pin (45) of IC1504 (HDMI-
SW).
NO Check the line between SC1502 and pin (41) of IC1504 (HDMI-
SW).
NO Check the line between SC1501 and pin (35) of IC1504 (HDMI-
SW).
NO Check the line between SC1505 and pin (31) of IC1504 (HDMI-
SW).
Check the setting of an external input device that connects with
HDMI-1/2/3/4.
NO Is access possible in the exchange of IC1504?
Check the peripheral circuit of SC1502/1503/1505/1501and
IC1504.
NO Check the line between HDMI-1 (SC1503) and IC1504.
NO Check the line between HDMI-2 (SC1502) and IC1504.
NO Check the line between HDMI-3 (SC1501) and IC1504.
NO Check the line between HDMI-4 (SC1505) and IC1504.
NO Check the IC1504 and peripheral circuits.
NO Check the line between IC1504 and IC3302.
7 – 10
LC-40/46/52LE820E (1st Edition)
NO
NO