Sharp LC-60LE925E (serv.man18) Service Manual ▷ View online
LC-46/60LE925E (1st Edition)
7 – 9
No picture on the display (2)
Does not the picture come out when VHF/UHF is received?
Is the video signal (TUNER_CVBS) output from pin (16) of
TUNER (TU1101)?
NO
Check the tuner and its peripheral circuits.
Replace as required.
Replace as required.
YES
Is the video signal (TUNER_CVBS) sent to pin (AD29/
TU_CVBS) of IC3302 (Digital AV decode & Main CPU)?
TU_CVBS) of IC3302 (Digital AV decode & Main CPU)?
NO
Check the line between TU1101 and IC3302. (Q1106, etc.)
YES
Refer to “The picture doesn't appear in all modes.”
No picture on the display (3)
Does not the picture come out when DTV is received?
Refer to “No sound (during the reception of TV (DIGITAL) broadcasting)”
No picture on the display (4)
Does not the picture come out when DTV (Satellite) is received?
Refer to “No sound (during the reception of TV (DIGITAL-Satellite) broadcasting)”
[External input EXT1] No picture on the display (5)
Does not the picture of the CVBS signal input to EXT1 go out?
Is CVBS signal sent to pin (14) of EXT1 (SC505)?
NO
Check the setting of an external input device that connects with
EXT1.
EXT1.
YES
Is CVBS signal from EXT1 (SC505) sent to pin (AG29/
SC1_CVBS_Y) of IC3302 (Digital AV decode & Main CPU)?
SC1_CVBS_Y) of IC3302 (Digital AV decode & Main CPU)?
NO
Check the line between SC505 and IC3302.
YES
Refer to “The picture doesn't appear in all modes.”
LC-46/60LE925E (1st Edition)
7 – 10
[External input EXT1] No picture on the display (6)
Does not the picture of the Y/C video signal input to EXT1 go out?
Is Y/C video signal sent to pins (14)/Y and (4)/C of EXT1
(SC505)?
NO
Check the setting of an external input device that connects with
EXT1.
EXT1.
YES
Is Y/C signal from EXT1 (SC505) sent to pins (AG29/
SC1_CVBS_Y) and (AG28/SC1_C1) of IC3302 (Digital AV
decode & Main CPU)?
SC1_CVBS_Y) and (AG28/SC1_C1) of IC3302 (Digital AV
decode & Main CPU)?
NO
Check the line between SC505 and IC3302.
YES
Refer to “The picture doesn’t appear in all modes.”
[External input EXT1] No picture on the display (7)
Does not the picture of the R/G/B signal input to EXT1 go out?
Is RGB1 signal sent to pins (4)/RGB_IN_RED/C, (6)/
RGB_IN_GREEN and (8)/RGB_IN_BLUE of EXT1 (SC505)?
NO
Check the setting of an external input device that connects with
EXT1.
EXT1.
YES
Is RGB1 signal from EXT1 (SC505) sent to pins (AH22/RED1),
(AJ22/GREEN_1) and (AJ21/BLUE_1) of IC3302 (Digital AV
decode & Main CPU)?
(AJ22/GREEN_1) and (AJ21/BLUE_1) of IC3302 (Digital AV
decode & Main CPU)?
NO
Check the line between SC505 and IC3302.
YES
Refer to “The picture doesn’t appear in all modes.”
[External input EXT2] No picture on the display (8)
Does not the picture of the CVBS signal input to EXT2 go out?
Is a CVBS signal input to pin (3) of EXT8 (J505)?
NO
Check the setting of an external input device that connects with
EXT2.
EXT2.
YES
Is CVBS signal sent to pin (AE29/CVBS__IN) of IC3302?
NO
Check the line between J505 and IC3302.
YES
Refer to “The picture doesn't appear in all modes.”
LC-46/60LE925E (1st Edition)
7 – 11
[External input EXT3] No picture on the display (9)
Does not the picture of the component video signal input to EXT3 (15pin-D-SUB terminal) go out?
Is it selected “Component” by the Audio setup under Menu-
Setup-Option-Input terminal setting - Input select?
NO
Set the “Component”.
YES
Is a COMPONENT video signal input to pins (1)/PC_R_COM,
(2)/PC_G_COM, (3)/PC_B_COM of EXT3 (SC501)?
(2)/PC_G_COM, (3)/PC_B_COM of EXT3 (SC501)?
NO
Check the setting of an external input device that connects with
EXT3.
EXT3.
YES
Is COMPONENT signal sent to pins (AJ17/PC_R_CM), (AJ16/
PC_G_CM) and (AJ15/PC_B_CM) of IC3302?
PC_G_CM) and (AJ15/PC_B_CM) of IC3302?
NO
Check the line between SC501 and IC3302.
YES
Refer to “The picture doesn't appear in all modes.”
[External input EXT3] No picture on the display (10)
Does not the picture of the DVI (ANALOG) video signal input to EXT3 (15pin-D-SUB terminal) go out?
Is it selected “PC (RGB)” by the Audio setup under Menu-Setup-
Option-Input terminal setting - Input select?
NO
Set the “PC (RGB)”.
YES
Are the video signal and the synchronized signal input from pin
(1, 2, 3)/(PC_R, G, B), (14 and 13)/(V, H.Sync) of EXT4 (SC501)?
(1, 2, 3)/(PC_R, G, B), (14 and 13)/(V, H.Sync) of EXT4 (SC501)?
NO
Check the connection and setup with the external DVI devices.
YES
Are the video signal and the synchronized signal input from pins
(AK17/PC_R) (AK16/PC_G) (AH15/PC_B) and (AK14/
PC_HSYNC) (AJ14/PC_VSYNC) of IC3302 (Digital AV decode &
Main CPU)?
(AK17/PC_R) (AK16/PC_G) (AH15/PC_B) and (AK14/
PC_HSYNC) (AJ14/PC_VSYNC) of IC3302 (Digital AV decode &
Main CPU)?
NO
Check the line between SC501 and IC3302.
YES
Refer to “The picture doesn't appear in all modes.”
LC-46/60LE925E (1st Edition)
7 – 12
[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 (45)
of IC1504 (HDMI-SW).
of IC1504 (HDMI-SW).
Is the Hot plug detection function output from pin (19) of the HDMI-2 (SC1502)
normal?
normal?
NO
Check the line between SC1502 and pin (41)
of IC1504 (HDMI-SW).
of IC1504 (HDMI-SW).
Is the Hot plug detection function output from pin (19) of the HDMI-3 (SC1501)
normal?
normal?
NO
Check the line between SC1501 and pin (35)
of IC1504 (HDMI-SW).
of IC1504 (HDMI-SW).
Is the Hot plug detection function output from pin (19) of the HDMI-4 (SC1505)
normal?
normal?
NO
Check the line between SC1505 and pin (31)
of IC1504 (HDMI-SW).
of IC1504 (HDMI-SW).
YES
NO
Check the setting of an external input device
that connects with HDMI-1/2/3/4.
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)?
read from pins (15, 16) of a HDMI-1 (SC1503)?
NO
Is access possible in the exchange of
IC1504?
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)?
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)?
read from pins (15, 16) of a HDMI-3 (SC1501)?
Check the peripheral circuit of SC1502/1503/
1505/1501 and IC1504.
1505/1501 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)?
read from pins (15, 16) of a HDMI-4 (SC1505)?
YES
Is the TMDS signal input into pins (27, 26/HDMI1_CLKP/N), (29,28/HDMI1_D0P/N),
(31, 30/HDMI1_D1P/N), (33, 32/HDMI1_D2P/N) of IC1504 from HDMI-1 (SC1503)?
(31, 30/HDMI1_D1P/N), (33, 32/HDMI1_D2P/N) of IC1504 from HDMI-1 (SC1503)?
NO
Check the line between HDMI-1 (SC1503)
and IC1504.
and IC1504.
Is the TMDS signal input into pins (18, 17/HDMI2_CLKP/N), (20, 19/HDMI2_D0P/
N), (22, 21/HDMI2_D1P/N), (24, 23/HDMI2_D2P/N) of IC1504 from HDMI-2
(SC1502)?
N), (22, 21/HDMI2_D1P/N), (24, 23/HDMI2_D2P/N) of IC1504 from HDMI-2
(SC1502)?
NO
Check the line between HDMI-2 (SC1502)
and IC1504.
and IC1504.
Is the TMDS signal input into pins (9, 8/HDMI3_CLKP/N), (11, 10/HDMI3_D0P/N),
(13, 12/HDMI3_D1P/N), (15, 14/HDMI3_D2P/N) of IC1504 from HDMI-3 (SC1501)?
(13, 12/HDMI3_D1P/N), (15, 14/HDMI3_D2P/N) of IC1504 from HDMI-3 (SC1501)?
NO
Check the line between HDMI-3 (SC1501)
and IC1504.
and IC1504.
Is the TMDS signal input into pins (100, 99/HDMI4_CLKP/N), (2,1/HDMI4_D0P/N),
(4, 3/HDMI4_D1P/N), (6,5/HDMI4_D2P/N) of IC1504 from HDMI-4 (SC1505)?
(4, 3/HDMI4_D1P/N), (6,5/HDMI4_D2P/N) of IC1504 from HDMI-4 (SC1505)?
NO
Check the line between HDMI-4 (SC1505)
and IC1504.
and IC1504.
YES
Is the TMDS signal output from IC1504 respectively?
Pins (86, 87/SW_TMDS_CLKP/N), (84, 85/SW_TMDS_D0P/N),
(82, 83/SW_TMDS_D1P), (80, 81/SW_TMDS_D2P)
Pins (86, 87/SW_TMDS_CLKP/N), (84, 85/SW_TMDS_D0P/N),
(82, 83/SW_TMDS_D1P), (80, 81/SW_TMDS_D2P)
NO
Check the IC1504 and peripheral circuits.
YES
Is the above-mentioned TMDS signal input to connector SC1501?
NO
Check the line between IC1504 and SC1501.
YES
Is the above-mentioned TMDS signal input to connector SC5601 on HDMI CON-
VERTER from MAIN PWB?
VERTER from MAIN PWB?
NO
Check the Harness [HN/MAIN-HDMI CON-
VERTER]
VERTER]
YES
Power is supplied to HDMI CONVERTER?
NO
Check the Harness [PN/POWER-HDMI CON-
VERTER]
VERTER]
YES
Is the above-mentioned TMDS signal input to connector SC1501 from HDMI CON-
VERTER?
VERTER?
NO
Check the Harness [HN/MAIN-HDMI CON-
VERTER]
VERTER]
YES
Is TMDS signal input to IC3302 (Digital AV decode & Main CPU)?
Pins (AJ8, AK8/TX_TMDS_D1N/P), (AJ7, AK7/TX_TMDS_D2N/P),
(AJ7, AK8/TX_TMDS_D0N/P), (AK6, AJ6/TX_TMDS_CLKN/P) from SC1501
Pins (AJ8, AK8/TX_TMDS_D1N/P), (AJ7, AK7/TX_TMDS_D2N/P),
(AJ7, AK8/TX_TMDS_D0N/P), (AK6, AJ6/TX_TMDS_CLKN/P) from SC1501
NO
Check the line between IC1504 and IC3302.
YES
Refer to “The picture doesn't appear in all modes.” or “No sound output in all
modes.”
modes.”
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