Sharp LC-60LE925E (serv.man18) Service Manual ▷ View online
LC-46/60LE925E (1st Edition)
7 – 5
No sound from external input devices (2)
Does not the sound of the audio signal input to EXT2 go out?
Is there a audio input signal to pins (4/CVBS_IN_L) and (1/
CVBS_IN_R) of EXT2 (J505)?
NO
Check the setting of an external input device that connects with
EXT2.
EXT2.
YES
Is there a audio input signal to pins (R28/CVBS_L) and (T28/
CVBS_R) of IC3302 (Digital AV decode & Main CPU) from J505?
CVBS_R) of IC3302 (Digital AV decode & Main CPU) from J505?
NO
Check IC3302 and its peripheral circuits.
YES
Refer to “No sound output in all modes.”
No sound from external input devices (3)
Does not the sound of the audio signal input to HDMI-2
mode go out?
mode go out?
Does not the sound of the audio signal input to PC/Compo-
nent mode go out?
nent mode go out?
Check whether it is selected “HDMI + Analog” by the Audio setup
under Menu-Setup-Option-Input terminal setting - PC input.
under Menu-Setup-Option-Input terminal setting - PC input.
Check whether it is selected “Video + Audio” by the Audio setup
under Menu-Setup-Option-Input terminal setting - PC input.
under Menu-Setup-Option-Input terminal setting - PC input.
YES
YES
Is there a audio input signal to pins (2/PC/HDMI_L) and (3/PC/HDMI_R) of J501 (PC AUDIO_IN)?
YES
NO
Check the setting of an external input device that connects with
J501.
J501.
Is there a audio input signal to pins (V30/PC/HDMI_L) and (V29/
PC/HDMI_R) of IC3302 (Digital AV decode & Main CPU) from
J501?
PC/HDMI_R) of IC3302 (Digital AV decode & Main CPU) from
J501?
NO
Check the line between J501 and IC3302.
YES
Refer to “No sound output in all modes.”
No sound from external input devices (4)
Does not the sound of the audio signal input to HDMI1/2/3/4 go out?
Please Refer to “[External input HDMI-1/2/3/4] No picture on the display (10)”
LC-46/60LE925E (1st Edition)
7 – 6
No sound from external output device (1)
No audio signal output to EXT1 terminal.
Is there a audio input signal to pins (10/AUDIO_OUT_L) and (12/
AUDIO_OUT_R) of EXT1 (SC505)?
YES
Check the setting of an external input device that connects with
EXT1.
EXT1.
NO
Is SC1-MUTE [118pins of IC4405] or MUTE_A_ALL [21pin of
IC2002 (UCOM)] at “H”?
IC2002 (UCOM)] at “H”?
YES
Check the peripheral circuits of IC4405/2002 and SC1-MUTE.
(Q502, D529etc.)
(Q502, D529etc.)
NO
Is there a audio output signal to pins (M30/TUNER_OUT_L) and
(M29/TUNER_OUT_R) of IC3302?
(M29/TUNER_OUT_R) of IC3302?
YES
Check the line between IC3302 and SC505.
NO
Check IC3302 and its peripheral circuits.
No sound from external output device (2)
No sound from HEAD PHONE_OUTPUT/ AUDIO_OUTPUT terminal.
Does not the sound of the audio signal output to Headphone
mode go out?
mode go out?
Does not the sound of the audio signal output to Audio out
mode go out?
mode go out?
Check whether it is selected “Headphone” by Headphone/Audio
out select under Menu-Setup-Option-Input terminal setting.
out select under Menu-Setup-Option-Input terminal setting.
Check whether it is selected “Audio out” by Headphone/Audio out
select under Menu-Setup-Option-Input terminal setting.
select under Menu-Setup-Option-Input terminal setting.
YES
YES
Is there a audio output signal to pins (2/HP/MONI_L) and (3/HP/MONI_R) of J504 (HEAD PHONE_OUTPUT/AUDIO_OUTPUT terminal)?
NO
YES
Check the setting of an external input device that connects with
J504.
J504.
Is the HP_PLUG signal input to [91/HP_PLUG] of IC4405 from
pin (6) of J504?
pin (6) of J504?
NO
Check the line between J504 and IC4405.
YES
Is HP/MONI_MUTE [AJ11 of IC3302 (Digital AV decode & Main
CPU)] or MUTE_A_ALL [21pin of IC2002 (UCOM)] at “H”?
CPU)] or MUTE_A_ALL [21pin of IC2002 (UCOM)] at “H”?
YES
Check the peripheral circuits of IC3302 and HP-MUTE_LINE.
(D527,Q506, etc.)
(D527,Q506, etc.)
NO
Is audio signal (HP_L/R) input to pins (M28/HP/MONI_L, M27/
HP/MONI_R) of IC3302?
HP/MONI_R) of IC3302?
YES
Check the line between IC3302 and J504.
NO
Check IC3302 and its peripheral circuits.
LC-46/60LE925E (1st Edition)
7 – 7
No sound from external output device (3)
No sound from DIGITAL AUDIO OUTPUT terminal.
Is the audio signal output to pins (1) of sound output terminal
(D520)?
YES
Check D520 and peripheral circuits.
NO
Is SPDIF_MUTE signal SPDIF_MUTE [H29/IC3302] or
MUTE_A_ALL [21pin of IC2002 (UCOM)] at “H”?
MUTE_A_ALL [21pin of IC2002 (UCOM)] at “H”?
YES
Check the peripheral circuits of IC3302 and SPDIF_MUTE.
(Q505, D530, etc.)
(Q505, D530, etc.)
NO
Is an audio signal input to pin (2) of IC503 from [J28/
SPDIF_OUT] of IC3302 and is the logic signal input into pin (1) of
IC503?
SPDIF_OUT] of IC3302 and is the logic signal input into pin (1) of
IC503?
YES
Check the IC503 and peripheral circuits.
NO
Check IC3302 and its peripheral circuits.
No sound from external output device (4)
Does not the sound of the audio signal output to HDMI1 go out?
Is the audio signal output to pins (14) of SC1503 (HDMI1 termi-
nal)?
YES
Check SC1503 and peripheral circuits.
NO
Is the audio signal output to pins (8) (10) (12) of IC1508?
YES
Check the line between SC1503 and IC1508.
NO
Is the audio signal input to pins (9) (11) (13) of IC1508?
Is the audio signal output to pins (6) of IC1508?
Is the audio signal input to pins (5) of IC1508?
Is the audio signal output to pins (6) of IC1508?
Is the audio signal input to pins (5) of IC1508?
YES
Check IC1508 and peripheral circuits.
NO
Is the audio signal output to pins (4) of IC1505?
YES
Check the line between IC1508 and IC1505.
NO
Is SPDIF_MUTE signal ARC_MUTE [AK2/IC3302] or
MUTE_A_ALL [21pin of IC2002 (UCOM)] at “H”?
MUTE_A_ALL [21pin of IC2002 (UCOM)] at “H”?
YES
Check the peripheral circuits of IC3302 and ARC_MUTE.
(Q1501, D1513, etc.)
(Q1501, D1513, etc.)
NO
Is an audio signal input to pin (2) of IC1505 from [J28/
SPDIF_OUT] of IC3302 and is the logic signal input into pin (1) of
IC1505?
SPDIF_OUT] of IC3302 and is the logic signal input into pin (1) of
IC1505?
YES
Check the IC1505 and peripheral circuits.
NO
Check IC3302 and its peripheral circuits.
LC-46/60LE925E (1st Edition)
7 – 8
No picture on the display (1)
The picture doesn't appear in all modes.
Is the LVDS signal output from IC3302 (DIGITAL_AV_DECODER_&_MAIN_CPU_&_VIDEO PROCESSER) respectively?
LVDS0_D0N/P (D14/C14), LVDS0_D1N/P (D15/C15), LVDS0_D2N/P (D16/C16), LVDS0_CLKN/P_83MHz (D17/C17), LVDS0_D3N/P (D18/C18),
LVDS0_D4N/P (D19/C19), LVDS1_D0N/P (B14/A14), LVDS1_D1N/P (B15/A15), LVDS1_D2N/P (B16/A16), LVDS1_CLKN/P_83MHz (B17/A17),
LVDS1_D3N/P (B18/A18), LVDS1_D4N/P (B19/A19)
YES
NO
Check IC3302 and its peripheral control circuits.
(IC2002, IC3501, IC3502, X3302, etc.)
(IC2002, IC3501, IC3502, X3302, etc.)
Is the LVDS signal input to IC2401.
LVDS0_D0N/P (A16/B16), LVDS0_D1N/P (A15/B15), LVDS0_D2N/P (A14/B14), LVDS0_CLKN/P_83MHz (A10/B10), LVDS0_D3N/P (B5/A5),
LVDS0_D4N/P (B4/A4), LVDS1_D0N/P (C2/C1), LVDS1_D1N/P (D2/D1), LVDS1_D2N/P (F2/F1), LVDS1_CLKN/P_83MHz (J2/J1), LVDS1_D3N/P
(L2/L1), LVDS1_D4N/P (P1/P2)
LVDS0_D0N/P (A16/B16), LVDS0_D1N/P (A15/B15), LVDS0_D2N/P (A14/B14), LVDS0_CLKN/P_83MHz (A10/B10), LVDS0_D3N/P (B5/A5),
LVDS0_D4N/P (B4/A4), LVDS1_D0N/P (C2/C1), LVDS1_D1N/P (D2/D1), LVDS1_D2N/P (F2/F1), LVDS1_CLKN/P_83MHz (J2/J1), LVDS1_D3N/P
(L2/L1), LVDS1_D4N/P (P1/P2)
YES
NO
Check the line between IC3302 and IC2401.
Is the LVDS signal input to IC2402.
FPGA_R10~19 (76~81, 84~87), FPGA_G10~19 (88~92, 95~99), FPGA_B10~19 (100~103, 106~112), FPGA_R20~29 (115~124),
FPGA_G20~G29 (127~136), FPGA_B20~B29 (139~144, 1~2, 5~6), FPGA_H/VSYNC1 (7~8), FPGA_H/VSYNC2 (10~11), FPGA_DE1/DE2
(9, 12), FPGA_CLK1/2_74M (15~16), FPGA_CONT11/12 (17~18), FPGA_CONT11/22 (19~20)
FPGA_R10~19 (76~81, 84~87), FPGA_G10~19 (88~92, 95~99), FPGA_B10~19 (100~103, 106~112), FPGA_R20~29 (115~124),
FPGA_G20~G29 (127~136), FPGA_B20~B29 (139~144, 1~2, 5~6), FPGA_H/VSYNC1 (7~8), FPGA_H/VSYNC2 (10~11), FPGA_DE1/DE2
(9, 12), FPGA_CLK1/2_74M (15~16), FPGA_CONT11/12 (17~18), FPGA_CONT11/22 (19~20)
YES
NO
Check the line between IC2401 and IC2402.
Is the LVDS signal output from IC2402.
LVDS0_FPGA_D0N/P (71, 70), LVDS0_FPGA_D0N/P (69, 68), LVDS0_FPGA_D1N/P (65, 64), LVDS0_FPGA_CLKN/P_83MHz (63, 62),
LVDS0_FPGA_D3N/P (59, 58), LVDS0_FPGA_D4N/P (57, 56), LVDS1_FPGA_D0N/P (53, 52), LVDS1_FPGA_D1N/P (51, 50),
LVDS1_FPGA_D1N/P (47, 46), LVDS1_FPGA_CLKN/P_83MHz (45, 44), LVDS1_FPGA_D3N/P (41, 40), LVDS1_FPGA_D4N (39, 38)
LVDS0_FPGA_D0N/P (71, 70), LVDS0_FPGA_D0N/P (69, 68), LVDS0_FPGA_D1N/P (65, 64), LVDS0_FPGA_CLKN/P_83MHz (63, 62),
LVDS0_FPGA_D3N/P (59, 58), LVDS0_FPGA_D4N/P (57, 56), LVDS1_FPGA_D0N/P (53, 52), LVDS1_FPGA_D1N/P (51, 50),
LVDS1_FPGA_D1N/P (47, 46), LVDS1_FPGA_CLKN/P_83MHz (45, 44), LVDS1_FPGA_D3N/P (41, 40), LVDS1_FPGA_D4N (39, 38)
YES
NO
Check IC2402 and its peripheral control circuits.
Is the above-mentioned LVDS signal output to connector P2601?
NO
Check the line between IC2402 and P2601.
YES
Similarly, is LCD controller's control signal normal?
NO
Please check each control signal of DET_POW (DET_PNL12V),
PE (PNL_EN).
PE (PNL_EN).
YES
LCD Controller Unit:
Is the LVDS signal input to connector LW of LCD Controller Unit?
Is the LVDS signal input to connector LW of LCD Controller Unit?
NO
NO Wire harness (LW) is checked.
YES
Check the panel module.
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