DOWNLOAD Sharp LC-22LE430E Service Manual ↓ Size: 15.96 MB | Pages: 127 in PDF or view online for FREE

Model
LC-22LE430E
Pages
127
Size
15.96 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
lc-22le430e.pdf
Date
PREV: Sharp LC-22LE320E (serv.man6) Service Manual / Technical Bulletin

Sharp LC-22LE430E Service Manual ▷ View online

         2008-03-14 
LC-19LE430E, LC-22LE430E, LC-26LE430, LC-32LE430E 
 57 
<External input SCART>No picture on the display (5) 
↓ 
Does not the picture of the R/G/B video signal input to SCART go out?
 
TERMINAL UNIT:
    
    ↓ 
 
 
MAIN_UNIT: 
 
     
↓YES 
 
 
 
 
 
 
↓YES 
 
↓YES 
 
 
 
 
 
<External input SCART>No picture on the display (6) 
↓ 
Does not the picture of the Y/C signal input to SCART1 go out?
 
TERMINAL UNIT:
    
    ↓ 
 
 
 
MAIN_UNIT: 
 
      
↓YES 
 
 
 
 
 
 
     
↓YES 
 
 
 
 
 
 
   <External input AV> No picture on the display (7) 
↓ 
Does not the picture of the composite video signal input to AV (Composite) go out?
 
TERMINAL UNIT:
    
    ↓ 
 
 
MAIN_UNIT: 
 
     
↓YES 
 
 
 
 
 
    
↓YES 
 
 
 
 
 
 
 
 
Is RGB signal sent to pin (15)/R, (11)/G, (7)/B, of SCART (CN151)?
NO 
 
Check the setting of an external input device that connects of 
CN151.
Refer to “The picture doesn't appear in all modes.”
 
Is RGB signal sent to pin (161)/R, (160)/G, (158)/B of IC U401?
NO 
 
Check the line between IC U401 and CN151.
Is Y/C signal sent to pin (20) and (15) of SCART (CN151)?
 
NO 
 
Refer to “The picture doesn't appear in all modes.”
 
Is Y/C signal sent to pin (175)/Y, (161)/C of IC U401?
 
NO 
 
Check the line between IC U401 and CN151.
Check the setting of an external input device that connects of 
CN151.
 
Is CVBS signal sent to pin (2) of AV (CN136)?
 
NO 
 
Check the setting of an external input device that connects of 
CN136.
 
Refer to “The picture doesn't appear in all modes.”
 
Is CVBS signal sent to pin (181) of IC U401?
 
NO 
 
Check the line between IC U401 and CN136.
LC-19LE430E, LC-22LE430E, LC-26LE430E, LC-32LE430E 
58  
<External input HDMI1>No picture on the display (8) 
↓ 
Does not the picture of the HDMI signal input to HDMI1 go out?
 
MINI AV_UNIT:
  
 
     ↓ 
 
 
↓NO 
 
YES
 
 
 
 
 
 
    
 
 
↓NO 
YES
 
  
 
 
 
 
 
      
↓YES
 
 
 
 
↓YES
 
 
 
  
 
 
 
 
Is the HOT_PLUG detection function of pin (19) of a HDMI terminal 
(CN502) normal?
 
NO 
 
Check the line between pin (50) of IC U501 and CN502.
Is TMDS signal output from pin(17, 18)/ 2±,(20, 21)/ 1±, (23, 24)/ 0±, 
(26, 27)/_C± of IC U501?
 
Check the connection and setup with the external HDMI devices.
Are EDID data pin (6) (SCL) of IC U503 (EEPROM), pin (5) (SDA) 
accessed, and is it read from pin (15), pin (16) of a HDMI terminal 
(CN502)?
 
NO 
 
Is access possible in the re-writing or exchange of EDID data of 
IC U503?
 
Check CN502, IC U503 and peripheral circuits.
Is TMDS signal input into pin(63, 62)/RX2-2±,(60, 59)/RX2-1±, (57, 
56)/RX2-0±, (54, 53)/RX2-C± of IC U501?
 
Check the line between IC U501 and CN502.
NO 
 
Check IC U501 and peripheral circuits.
 
Refer to “The picture doesn't appear in all modes.”
 
         2008-03-14 
LC-19LE430E, LC-22LE430E, LC-26LE430, LC-32LE430E 
 59 
<External input HDMI2>No picture on the display (9) 
↓ 
Does not the picture of the HDMI signal input to HDMI2 go out?
 
MINI AV_UNIT:
  
 
     ↓ 
 
 
↓ 
 
YES
 
 
 
 
 
 
    
 
 
↓NO 
YES
 
  
 
 
 
 
 
       
↓YES 
 
 
 
↓YES
 
 
 
 
 
 
 
<External input VGA>No picture on the display (10) 
↓
 
↓
 
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 R/G/B/H/V signal sent to pin (1)/R, (2)/G, (3)/B, (14)/H, (13)/V of 
VGA (CN101)?
 
NO 
 
Check the setting of an external input device that connects of 
CN101.
 
Refer to “The picture doesn't appear in all modes.”
 
Is R/G/B/H/V signal sent to pin (156)/R, (154)/G, (152)/B, (151)/H, 
(150)/V of IC U401?
 
NO 
 
Check the line between IC U401 and CN101.
Is the HOT_PLUG detection function of pin (19) of a HDMI terminal 
(CN506) normal?
 
NO 
 
Check the line between pin (35) of IC U501 and CN506.
 
Is TMDS signal output from pin(17, 18)/ 2±,(20, 21)/ 1±, (23, 24)/ 0±, 
(26, 27)/_C± of IC U501?
 
Check the connection and setup with the external HDMI devices.
Are EDID data pin (6)(SCL) of IC U504 (EEPROM), pin (5)(SDA)  
accessed, and is it read from pin (15), pin (16) of a HDMI 
terminal(CN506)?
 
NO 
 
Is access possible in the re-writing or exchange of EDID data of 
IC U504?
 
Check CN506, IC U504 and peripheral circuits.
Is TMDS signal input into pin(48, 47)/RX3-2±,(45, 44)/RX3-1±, (42, 
41)/RX3-0±, (39, 38)/RX3-C± of IC U501?
 
Check the line between IC U501 and CN506.
NO 
 
Refer to “The picture doesn't appear in all modes.”
 
 
Check IC U501 and peripheral circuits.
 
NO 
 
LC-19LE430E, LC-22LE430E, LC-26LE430E, LC-32LE430E 
60  
<External input YPbPr(Component)> No picture on the display (11) 
↓
  
Does not the picture of the component video signal input to Component go out?
 
TERMINAL_UNIT:
    
    ↓ 
 
 
MAIN_UNIT: 
 
     
↓YES 
 
 
 
 
 
    
↓YES 
 
 
 
 
 
 
 
 
 
Is Component Y/Pb/Pr signal sent to pin (2)/Y, (4)/Pb, (6)/Pr of 
YPbPr(CN111) ?
 
NO 
 
Check the setting of an external input device that connects of 
CN111.
 
Refer to “The picture doesn't appear in all modes.”
 
Is Component Y/Pb/Pr signal sent to pin (163)/Y, (165)/Pb, (166)/Pr 
of IC U401?
 
NO 
 
Check the line between IC U401 and CN111.
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