DOWNLOAD Sharp LC-26SH7E Service Manual ↓ Size: 21.71 MB | Pages: 127 in PDF or view online for FREE

Model
LC-26SH7E
Pages
127
Size
21.71 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
lc-26sh7e.pdf
Date
PREV: Sharp LC-26SH330E (serv.man3) Driver / Update

Sharp LC-26SH7E Service Manual ▷ View online

         2008-03-14 
LC-19S7E-BK LC-26S7E-BK LC-32S7E-BK 
 29 
The sound is not emitted from the speaker though the picture has come out.  
↓ 
No sound output in all modes?
 
TEREMINAL UNIT:
   
↓ 
 
 
↓YES 
 
 
↓YES 
 
 
↓YES 
 
 
↓YES 
 
 
↓YES 
 
 
 
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?
 
TEREMINAL UNIT:
   
↓ 
 
 
↓YES 
 
 
↓YES 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
No sound from external input devices (1)
 
Is the audio signal output of pin (84) (DACOUTL0) and pin (85) 
(DACOUTR0) of IC U4201 normal? 
NO 
 
Check IC U4201 and its peripheral circuits.
Is audio signal input to pin (5)(LIN), pin (6)(RIN) of IC U6102 
(AMP)?
 
NO 
 
Check the line between IC U6101 and IC U6102.
Is MUTE/SHUTDOWN circuit [AMP_MUTE, AMP_STBY] normal?
 
Is the audio signal output of pin (3,4) (LOUT+) and pin (1,2) 
(ROUT+) of CN6101 (AUDIO-CONNECTOR) normal? 
NO 
 
Check the AMP_MUTE and AMP_STBY. (Q6106, etc.) 
NO 
 
Check IC U6102 and its peripheral circuits.
Check Speaker Box (right and left) and wire harness.
 
Is the SIF signal output from pin (13) of TUNER (TU1101)?
 
Is the SIF signal sent to pin 54(SIFP) and pin 55(SIFM) of IC 
U4201?
 
NO 
 
Check the tuner and its peripheral circuits. Replace as required.
NO 
 
Check IC U4201 its peripheral circuits.
 
.
 
Refer to “No sound output in all modes”.
 
Is the audio signal output of pin (9) (OUTL) and pin (11) (OUTR) of 
IC U6101 normal? 
NO 
 
Check IC U6101 and its peripheral circuits.
LC-19S7E-BK LC-26S7E-BK LC-32S7E-BK 
 
30  
↓ 
Does not the sound of the audio signal input to SCART1 go out?
 
TEREMINAL UNIT:
   
↓ 
 
 
 
↓YES 
 
 
 
↓YES 
 
 
No sound from external input devices (2) 
↓ 
Does not the sound of the audio signal input to YPbPr (Component) go out?
 
MAIN UNIT:
  
 
 
↓ 
 
 
↓YES 
 
 
↓YES 
 
 
 
No sound from external input devices (3)
 
↓ 
Does not the sound of the audio signal input to PC(VGA) go out?
 
MAIN UNIT:
  
 
 
↓ 
 
 
↓YES 
 
 
↓YES 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Is the audio signal properly sent to pin (6) (YPbPr2_AU_INL) and 
pin (2) (YPbPr2_AU_INR) of SCART1(CN1901)?
 
Check the setting of an external input device that connects of 
CN1901.
 
NO 
 
Is the audio signal properly sent to pin (72) (AUL1) and pin (73) 
(AUR1) of IC U4201?
 
NO 
 
Check the line between CN1901 and IC U4201
 
Refer to “No sound output in all modes”.
 
Is the audio signal properly sent to pin (8) (YPbPr1_AU_INL) and 
pin (10)( YPbPr1_AU_INR) of CN1201?
 
NO 
 
Check the connection to CN1201 and the external input device
 
Refer to “No sound output in all modes”.
 
Is the audio signal properly sent to pin (70) (AUL0) and pin (71) 
(AUR0) of IC U4201?
 
NO 
 
Check the line between CN1201 and IC U4201.
.
 
Is the audio signal properly sent to pin (2) (PC_AU_INL) and pin (3) 
(PC_AU_INR) of CN1702?
 
NO 
 
Check the connection to CN1702 and the external input device.
Refer to “No sound output in all modes”.
 
Is the audio signal properly sent to pin (75) (AUL2) and pin (76) 
(AUR2) of IC U4201?
 
NO 
 
Check the line between CN1702 and IC U4201.
 
         2008-03-14 
LC-19S7E-BK LC-26S7E-BK LC-32S7E-BK 
 31 
No sound from external input devices (4) 
↓ 
Does not the sound of the audio signal input to “AV side” go out?
 
MAIN UNIT:
  
 
 
↓ 
 
 
↓YES 
 
 
↓YES 
 
 
No sound from external input devices (5) 
↓ 
Does not the sound of the audio signal input to HDMI go out?
 
↓ 
 
 
↓YES 
 
 
 
 
 
The audio signal is not output (1) 
↓ 
The audio signal of UHF/VHF is not output from SCART1.
 
TEREMINAL UNIT:
   
↓ 
 
 
↓NO 
 
 
↓NO 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Is the audio signal properly sent to pin (4) (SIDE_AU_INL) and pin 
(6) (SIDE_AU_INR) of CN1207?
 
NO 
 
Check the connection to CN1207 and the external input device.
Refer to “No sound output in all modes”.
 
Is the audio signal properly sent to pin (77) (AUL3) and pin (78) 
(AUR3) of IC U4201?
 
NO 
 
Check the line between CN1207 and IC U4201.
 
Refer to “No sound output in all modes”.
 
Is picture of the signal input from HDMI displayed?
 
NO 
 
Refer to “Does not the picture of the HDMI signal input to HDMI 
go out?”.
 
Is audio signal output from IC U4201 pin(82)(SCAL) and pin(83) 
(SCAR) sent to pin (13)(INL) and pin (15)(INR) of IC U1901? 
Is audio signal output from IC U1901 sent to pin (3) (SCAUD_LOUT) 
and pin(1)(SCRAUD_ROUT) of SCART1(CN1901)?
 
YES 
Check the connection to SCART1 and external devices.
YES 
Check the line between IC U4201 and IC U1901
 
Check IC U4201 and its peripheral circuits.
LC-19S7E-BK LC-26S7E-BK LC-32S7E-BK 
 
32  
 
The audio signal is not output (2) 
↓ 
No audio signal output from LINE_AUDIO_OUTPUT terminal.
 
TEREMINAL UNIT:
   
↓ 
 
 
↓NO 
 
 
↓NO 
 
 
The audio signal is not output (3) 
↓ 
No sound from HEADPHONE_OUTPUT terminal.
 
MINI AV_UNIT:
  
 
 
↓ 
 
 
↓YES 
 
 
↓YES 
 
 
 
↓YES 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Is the audio signal output from IC U4201 pin(80) (LINEOUTL) and 
pin(81) (LINEOUTR) sent to pin(13)(INL) and pin(15)(INR) of IC 
U1201?
 
Is audio signal output from IC U1201 sent to pin(4)(AUD_LOUT) 
and pin (6)(AUD_ROUT) of connector(CN1205)?
 
YES 
 
Check the connection to CN1205 and external devices.
YES 
 
Check the line between IC U4201 and IC U1201.
Check IC U4201 and its peripheral circuits.
Is the audio signal output from IC U6103 to pin(2) (HPL) and pin (3) 
(HPR) of headphone terminal CN1204?
 
Is the HP_DET signal input into pin (93) of IC U4201 from pin (5) of 
a headphone terminal (CN1204)? 
NO 
 
Check the connection to CN1204 and external headphone is 
plug in well.
 
NO 
 
Check the line between IC U6103 and CN1204.
Check IC U4201 and its peripheral circuits.
Is the audio signal output from IC U4201 pin (84)(DACOUTL0) and 
pin(85) (DACOUTR0) sent to pin(15)(INR) and pin(13)(INL) of IC 
U6103? 
NO 
 
Check the line between IC U4201 and IC U6103.
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