DOWNLOAD Sharp LC-32SH7E Service Manual ↓ Size: 21.71 MB | Pages: 127 in PDF or view online for FREE

Model
LC-32SH7E
Pages
127
Size
21.71 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
lc-32sh7e.pdf
Date
PREV: Sharp LC-32SH330E (serv.man3) Driver / Update

Sharp LC-32SH7E Service Manual ▷ View online

         2008-03-14 
LC-19S7E-BK LC-26S7E-BK LC-32S7E-BK 
 41 
 
The audio signal is not output (1) 
↓ 
The audio signal of UHF/VHF is not output from SCART1.
 
TEREMINAL UNIT:
   
↓ 
 
 
↓NO 
 
 
↓NO 
 
 
 
The audio signal is not output (2) 
↓ 
The audio signal of UHF/VHF/MONITOR is not output from SCART2.
 
TEREMINAL UNIT:
   
↓ 
 
 
↓NO 
 
 
↓NO 
 
 
 
The audio signal is not output (3) 
↓ 
No audio signal output from LINE_AUDIO_OUTPUT terminal.
 
TEREMINAL UNIT:
   
↓ 
 
 
↓NO 
 
 
↓NO 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Is audio signal output from IC U4201 pin(82)(LINEOUTL1) and 
pin(83)(LINEOUTR1) sent to pin (13)(INL) and pin (15)(INR) of IC 
U1901? 
Is audio signal output from IC U1901 sent to pin (3) (SCLAUO1) 
and pin(1)(SCRAUO1) 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.
Is the audio signal output from IC U4201 pin(80) (LINEOUTL0) and 
pin(81) (LINEOUTR0) sent to pin(13)(INL) and pin(15)(INR) of IC 
U1201?
 
Is audio signal output from IC U1201 sent to pin(3)( SCLAUO2) and 
pin(1)( SCRAUO2) of SCART2(CN1902)?
 
YES 
 
Check the connection to SCART2 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 U4201 pin(80) (LINEOUTL0) and 
pin(81) (LINEOUTR0) 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.
LC-19S7E-BK LC-26S7E-BK LC-32S7E-BK 
 
42  
No picture on the display (1) 
↓ 
The picture doesn't appear in all modes.
 
MAIN UNIT:
  
 
 
↓ 
 
 
 
 
 
 
 
 
 
 
 
↓NO 
 
YES 
 
↓YES 
 
 
 
PANEL_UNIT:
  
 
 
↓YES 
 
 
↓YES 
 
 
 
No picture on the display (2) 
↓ 
Does not the picture come out when VHF/UHF is received?
 
TERMINAL UNIT:
    
 
↓ 
 
 
MAIN_UNIT: 
   
↓YES 
 
 
 
 
 
 
 
↓YES 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Is LCD controller's control signal normal?
Is the above-mentioned LVDS signals output to connector 
NO 
 
Check the line between IC U4201 and CN7503.
NO 
 
Control signals BRIGHT_ADJ, INVERTER_ON_OFF, 
PANEL_PWR, and it peels off and whether normality is checked.
 
Check the panel module. 
Similarly, is the LVDS signal input to connector of the panel 
module?
NO 
 
Wire harness is checked.
 
Is LVDS signal output from 1st_channel and 2nd_channel of IC U4201 in each mode? 
(RXO0+/RXO0-),( RXO1+/RXO1-),( RXO2+/RXO2-),( RXO3+/RXO3-),( RXOC+/RXOC-)
 
Check IC U4201 and its peripheral control circuits.
Is picture signal input from pin (16) of TUNER (TU1101) to pin 
35(CVBS0) of IC U4201?
 
Is TUNER_CVBS signal output from pin (16) of TUNER (TU1101)?
NO 
 
Check whether I2C is normally accessed between TU1101 and 
IC  U4201.
 
NO 
 
Check the line between IC U4201and TU1101.
Refer to “The picture doesn't appear in all modes.”
 
         2008-03-14 
LC-19S7E-BK LC-26S7E-BK LC-32S7E-BK 
 43 
 
<External input AV side(Composite)>No picture on the display (5) 
↓ 
Does not the picture of the composite video signal input to AV side(Composite) go out?
 
TERMINAL UNIT:
    
 
↓ 
 
 
MAIN_UNIT: 
   
↓YES 
 
 
 
 
 
 
 
↓YES 
 
 
 
<External input HDMI1>No picture on the display (6) 
↓ 
Does not the picture of the HDMI signal input to HDMI1 go out?
 
MINI AV_UNIT:
  
 
 
↓ 
 
 
↓ 
 
YES
 
 
 
 
 
 
    
 
 
↓NO 
YES
 
  
 
 
 
 
 
 
 
↓YES 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Is CVBS signal sent to pin (2) of AV side(CN1206) ?
 
NO 
 
Check the setting of an external input device that connects of 
CN1206.
 
Refer to “The picture doesn't appear in all modes.”
 
Is CVBS signal sent to pin 33 (CVBS1) of IC U4201?
 
NO 
 
Check the line between IC U4201 and CN1206.
Is the HOT_PLUG detection function of pin (19) of a HDMI terminal 
(CN1501) normal?
 
NO 
 
Check the line between pin 50 of IC U1503 and CN1501.
Refer to “The picture doesn't appear in all modes.”
 
Check the connection and setup with the external HDMI devices.
Are EDID data pin (6)(SCL) of IC U1501 (EEPROM), pin (5)(SDA)  
accessed, and is it read from pin (15), pin (16) of a HDMI 
terminal(CN1501)?
 
NO 
 
Is access possible in the re-writing or exchange of EDID data of 
IC U1501?
 
Check CN1501, IC U1501 and peripheral circuits.
Is TMDS signal input into pin(RX_B2+, RX_B2-)/D2±_2,(RX_B1+, 
RX_B1-)/D1±_2, (RX_B0+, RX_B0-)/D0±_2, (RX_BC+, RX_BC-)/CLK
±
2 of IC U1503?
Check the line between IC U1503 and CN1501.
NO 
 
LC-19S7E-BK LC-26S7E-BK LC-32S7E-BK 
 
44  
<External input HDMI2>No picture on the display (7) 
↓ 
Does not the picture of the HDMI signal input to HDMI2 go out?
 
MINI AV_UNIT:
  
 
 
↓ 
 
 
↓ 
 
YES
 
 
 
 
 
 
    
 
 
↓NO 
YES
 
  
 
 
 
 
 
 
 
↓YES 
 
 
 
 
<External input VGA>No picture on the display (8) 
↓
  
Does not the picture of the PC IN(ANALOG) video signal input to VGA(15pin-D-SUB terminal) go out?
 
TERMINAL_UNIT:
   
 
↓ 
 
 
MAIN_UNIT: 
   
↓YES 
 
 
 
 
 
 
 
↓YES 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Is the HOT_PLUG detection function of pin (19) of a HDMI terminal 
(CN1601) normal?
 
NO 
 
Check the line between pin 35 of IC U1503 and CN1601.
Refer to “The picture doesn't appear in all modes.”
 
Check the connection and setup with the external HDMI devices.
Are EDID data pin (6)(SCL) of IC U1602 (EEPROM), pin (5)(SDA) 
accessed, and is it read from pin (15), (16) of a HDMI 
terminal(CN1601)?
 
NO 
 
Is access possible in the re-writing or exchange of EDID data of 
IC U1602?
 
Check CN1601, IC U1602 and peripheral circuits.
Is TMDS signal input into pin(RX_A2+, RX_A2-)/D2±_1,(RX_A1+, 
RX_A1-)/D1±_1, (RX_A0+, RX_A0-)/D0±_1, (RX_AC+, RX_AC-
)/CLK±_1 of IC U1503?
 
Check the line between IC U1503 and CN1601.
NO 
 
Is R/G/B/H/V signal sent to pin (1)/R, (2)/G, (3)/B, (14)/H, (13)/V of 
VGA (CN1401)?
 
NO 
 
Check the setting of an external input device that connects of 
CN1401.
 
Refer to “The picture doesn't appear in all modes.”
 
Is R/G/B/H/V signal sent to pin (RIN1)/R, (GIN1)/G, (BIN1)/B, 
(HSYNC1)/H, (VSYNC1)/V of IC U4201?
 
NO 
 
Check the line between IC U4201and CN1401.
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