LC-40/46LE830E, RU/831E, S
6 – 14
[External input HDMI-1/2/3/4] No picture on the display (11)
Does not the picture/sound of the HDMI signal input to HDMI-1/2/3/4 go out?
Is the Hot plug detection function output from pin [19] of the
HDMI-1 (SC1503) normal?
NO
Check the line between SC1503 and pin [59] of IC1504 (HDMI-
SW).
Is the Hot plug detection function output from pin [19] of the
HDMI-2 (SC1502) normal?
NO
Check the line between SC1502 and pin [74] of IC1504 (HDMI-
SW).
Is the Hot plug detection function output from pin [19] of the
HDMI-3 (SC1501) normal?
NO
Check the line between SC1501 and pin [55] of IC1504 (HDMI-
SW).
Is the Hot plug detection function output from pin [19] of the
HDMI-4 (SC1505) normal?
NO
Check the line between SC1505 and pin [50] of IC1504 (HDMI-
SW).
YES
NO
Check the setting of an external input device that connects with
HDMI-1/2/3/4.
Is EDID data pins [58/HDMI1_SCL, 57/HDMI1_SDA] of IC1504
accessed, and is it read from pins [15, 16] of a HDMI-1
(SC1503)?
NO
Is access possible in the exchange of IC1504?
Is EDID data pins [73/HDMI2_SCL, 72/HDMI2_SDA] of IC1504
accessed, and is it read from pins [15, 16] of a HDMI-2
(SC1502)?
NO
Is EDID data pins [54/HDMI3_SCL, 53/HDMI3_SDA] of IC1504
accessed, and is it read from pins [15, 16] of a HDMI-3
(SC1501)?
Check the peripheral circuit of SC1501/1502/1503/1505 and
IC1504.
Is EDID data pins [49/HDMI4_SCL, 48/HDMI4_SDA] of IC1504
accessed, and is it read from pins [15, 16] of a HDMI-4
(SC1505)?
YES
Do TMDS signals input to pins [26&27/
HDMI1_CLKNP_222.75MHz, 28&29/HDMI1_D0NP, 30&31/
HDMI1_D1NP, 32&33/HDMI1_D2NP] of IC1504?
NO
Check the line between HDMI-1 (SC1503) and IC1504.
Do TMDS signals input to pins [17&18/
HDMI2_CLKNP_222.75MHz, 19&20/HDMI2_D0NP, 21&22/
HDMI2_D1NP, 23&24/HDMI2_D2NP] of IC1504?
NO
Check the line between HDMI-2 (SC1502) and IC1504.
Do TMDS signals input to pins [8&9/
HDMI3_CLKNP_222.75MHz, 10&11/HDMI3_D0NP, 12&13/
HDMI3_D1NP, 14&15/HDMI3_D2NP] of IC1504?
NO
Check the line between HDMI-3 (SC1501) and IC1504.
Do TMDS signals input to pins [99&100/
HDMI4_CLKN_222.75MHz, 1&2/HDMI4_D0NP, 3&4/
HDMI4_D1NP, 5&6/HDMI4_D2NP] of IC1504?
NO
Check the line between HDMI-4 (SC1505) and IC1504.
YES
Do TMDS signals output from pins [87&86/
SW_TMDS_CLKNP_222.75MHz_, 85&84/SW_TMDS_D0NP_,
83&82/SW_TMDS_D1NP_, 81&80/SW_TMDS_D2NP_] of
IC1504 respectively?
NO
Check the IC1504 and peripheral circuits.
YES
Do TMDS signals input to pins [AM9&AL9/
SW_TMDS_CLKNP_222.75MHz, AM10&AL10/
SW_TMDS_D0NP, AM11&AL11/SW_TMDS_D1NP,
AM12&AL12/SW_TMDS_D2NP] of IC3303 (Digital AV decode &
Main CPU)?
NO
Check the line between IC3303 and IC1504.
YES
Refer to “Refer to “No picture on the display (1)” or “The sound is not emitted from the Speaker & Woofer though the picture has come out.”
