DOWNLOAD Sharp LC-32LE700E (serv.man8) Service Manual ↓ Size: 1.05 MB | Pages: 21 in PDF or view online for FREE

Model
LC-32LE700E (serv.man8)
Pages
21
Size
1.05 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD / Troubleshooting Table
File
lc-32le700e-sm8.pdf
Date
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LC-32/40/46LE700E/RU/S,LU700E/S,LX700E/RU,LC-52LE700E/RU/S
6 – 5
The sound is not emitted from the speaker though the picture has come out. 
                                            
No sound output in all modes.?   
YES
Is the SPK_OUT communication output to from pins (N29/
SPK_OUT_R) (N30/SPK_OUT_L) of IC3302 
(Digital AV decode & Main CPU)?
NO
Check IC3302 and its peripheral circuits.
YES
Is the SPK_OUT communication sent to pins(3),(7) of IC2701 
(POWER_AMP) from of IC3302? 
NO
Check the line between IC3302 and IC2701.
YES
Is the audio signal output of pin(27, 28/L-ch), (11, 12/R-ch) of 
IC2701 (POWER_AMP) normal?   
NO
Check IC2701 and its peripheral circuits. 
YES
Is the audio signal output of pins (1, 2/L-ch), (4, 3/R-ch) of 
P2701(SP) terminal normal?   
NO
P2701(SP) terminal and the peripheral circuit (L/C filter) are 
checked. 
YES
Check Speaker (right and left) and wire harness. 
No sound (during the reception of TV(ANALOG) broadcasting) 
                                            
Does not the sound go out though the picture has come out when UHF/VHF is received?   
YES
Is a SIF signal output from pin (4) of TUNER (TU1101)?
NO
Check the tuner and its peripheral circuits.
Replace as required.
YES
Is a SIF signal input to (AB27/S_IF) of IC3302(Digital AV decode 
& Main CPU) from pin (4) of TU1101? 
NO
Check the line between TU1101 and IC3302.
(Q1104, etc.)
YES
Refer to “No sound output in all modes” 
LC-32/40/46LE700E/RU/S,LU700E/S,LX700E/RU,LC-52LE700E/RU/S
6 – 6
No sound (during the reception of TV(DIGITAL) broadcasting) (1) 
                                            
Does not the sound go out though the picture has come out when DTV is received?   
YES
Is IF signal output from pins(16, 17) of TU1101?
NO
Check the tuner and its peripheral circuits.
Replace as required.
YES
Is IF signal sent to pins(14,15)of IC1102(Multiplexer)? 
NO
Check the line between TU1101 and IC1102.
YES
Are pins(9,10,11) of IC1102 at L?   
Is IF signal sent to pins(AA29/D__IF_P, AB29/D__IF_N) of 
IC3302(Digital AV decode & Main CPU)?   
YES
Refer to “No sound output in all modes” 
No sound (during the reception of TV(DIGITAL) broadcasting) (2) 
                                            
Does not the sound go out though the picture has come out when DTV is received?   
YES
Is IF signal output from pins(16, 17) of TU1101?
NO
Check the tuner and its peripheral circuits.
Replace as required.
YES
Is IF signal sent to pins(14,15)of IC1102(Multiplexer)? 
NO
Check the line between TU1101 and IC1102.
YES
Are pins(9,10,11) of IC1102 at H?   
YES
Is IF signal sent to pins(41/INM , 42/INP) of IC1106  ?   
NO
Check the line between IC1102 and IC1106.
YES
Is signal output to pins(17/TS_CLK, 18/TS_SYNC, 19/
TS_VALID, 21/TS_DATA0) of IC1106  ?   
NO
Check IC1106 and its peripheral circuits.
YES
Is signal sent to pins(11/TS_DATA1, 12/TS_DATA2, 13/
TS_DATA3, 14/TS_DATA4) of IC4405  ?   
NO
Check the line between IC1106 and IC4405.
YES
Is signal output to pins(122/TS_VALIDO, 123/TS_CLKOC, 124/
TS_DATAO, 124/TS_SYNCO) of IC4405  ?   
NO
Check IC4405 and its peripheral circuits.
YES
Is signal sent to pins(A30/TS_CPUIN_VAL, B30/
TS_CPUIN_CLK,  C30/TS_CPUIN_SYNC, C29/TS_CPUIN_D0) 
of IC3302(Digital AV decode & Main CPU)?   
NO
Check the line between IC4405 and IC3302.
YES
Refer to “No sound output in all modes” 
LC-32/40/46LE700E/RU/S,LU700E/S,LX700E/RU,LC-52LE700E/RU/S
6 – 7
No sound from external input devices (1) 
                                            
Does not the sound of the audio signal input to EXT1/EXT2 go out?   
Is there a audio input signal in pins (6/SC1_IN_L) and (2/
SC1_IN_R) of EXT1 (SC503)?
NO
Check the setting of an external input device that connects with 
EXT1.
Is there a audio input signal in pins (6/SC2_IN_L) and (2/
SC2_IN_R) of EXT2 (SC502)?
NO
Check the setting of an external input device that connects with 
EXT2.
YES
Is there a audio input signal in pins (V28/SC1_L) and (V27/
SC1_R) of IC3302 (Digital AV decode & Main CPU) from 
SC503? 
NO
Check the line between SC503 and IC3302.
Is there a audio input signal in pins (U27/SC2_L) and (U26/
SC2_R) of IC3302 (Digital AV decode & Main CPU) from 
SC502? 
NO
Check the line between SC502 and IC3302.
YES
Refer to “No sound output in all modes”.
No sound from external input devices (2) 
                                            
Does not the sound of the audio signal input to EXT3 go out?   
Is there a audio input signal in pins (2/COMP_IN_L) and (4/
COMP_IN_R) of EXT3 (J502)?
NO
Check the setting of an external input device that connects with 
EXT3.
YES
Is there a audio input signal in pins (U29/COMP_L) and (U28/
COMP_R) of IC3302 (Digital AV decode & Main CPU) from 
J502? 
NO
Check the line between J502 and IC3302.
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? 
Does not the sound of the audio signal input to PC mode go 
out?
Check whether it is selected  "EXT4(RGB)" by the Audio setup of 
the HDMI option.
Check whether it is selected  "HDMI-2" by the Audio setup of the 
HDMI option.
YES
YES
Is there a audio input signal in pins(2/PC/HDMI_L) and (3/PC/HDMI_R) of HDMI-2/PC(J501)?
YES
NO
Check the setting of an external input device that connects with 
HDMI-2/PC.
Is there a audio input signal in pins (V30/PC/HDMI_L) and (V29/
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”.
LC-32/40/46LE700E/RU/S,LU700E/S,LX700E/RU,LC-52LE700E/RU/S
6 – 8
No sound from external input devices (4) 
                                            
Does not the sound of the audio signal input to EXT8 go out?   
Is there a audio input signal in pins(5/CVBS_IN_L) and (4/
CVBS_IN_R) of EXT8(J506)?
NO
Check the setting of an external input device that connects with 
EXT8.
YES
Is there a audio input signal in pins (R28/CVBS_L) and (T28/
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 (5) 
                                            
Does not the sound of the audio signal input to EXT4/5/6 (HDMI) go out?   
Does not the picture/sound of the HDMI signal input to HDMI-1/2/3 go out?
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