DOWNLOAD Sharp LC-32LE600E (serv.man7) Service Manual ↓ Size: 1.32 MB | Pages: 29 in PDF or view online for FREE

Model
LC-32LE600E (serv.man7)
Pages
29
Size
1.32 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD / Troubleshooting Table
File
lc-32le600e-sm7.pdf
Date
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LC-32/40/46LE600E/RU/S
5 – 17
<When EXT1 is used for external input>                          No picture on the display (2)-3
                                            
No Y/C output when the EXT1 external input is used.
                                            
Checklist:
1) Is “INPUT SOURCE” button
on the remote control set up correctly? 
••• set it as “EXT1” with the INPUT SOURCE button on the remote 
control. 
2) Is MENU-Picture-Backlight/Contrast/Brightness set to “MIN”? 
••• Set it to an appropriate level.
3) Check the connection to the external device 
•••Connect it correctly as per the operation manual for the device.
4) Attention: The terminal of IC3303 (VCT) cannot be actually checked by hiding oneself, and check it with another terminal of the same line, 
please.
                                            
Is the Y/C signal sent to pins (20) and (15) of SCART1 (SC503)?
(Y/C1) 
NO
Check external connection, input setting, SCART1 (SC503) and 
peripheral circuits. 
YES
Is the Y/C signal (Y/C1) sent to input terminal pins (AE24) and 
(AF24) of IC3303 (VCT)? 
NO
Check between pins (20) (15) of SCART1 (SC503) and pins 
(AE24) (AF24) of IC3303 (VCT), and peripheral circuits.
YES
Is the LVDS video signal (LVDS0_D [0:4] 
±) input to pins (40)-
(28) of LW Connector (P2601), and is CLK signal (TCLK
±) input 
to pins (32)/(33)?
NO
Check whether there is short circuit between [A6:A11], [B6:B11] 
pin of IC3303 (VCT) and (40)-(28) pin of LW Connector (P2601), 
and peripheral circuits. 
YES
Is the I2C signal (VCOM_SDA/SCL) send to pin(12)/(13) of LP 
Connector (P2602)?
NO
Check the I2C signal of IC2602 and peripheral circuit. 
YES
Is the PNL12V output to pin (1)/(2) of PL Connector (CN7004(32 
inch)/CN7503(40/46 inch)) of POWER UNIT?
NO
Check PL connector of POWER UNIT and U7053(32inch)/
IC7502(40/46inch). 
YES
Exchange LCD-CONT-UNIT and do it operate normally?
NO
Check the contact of the LCD-CONT-UNIT connection harness 
(LW/LP/PL).
Exchange LCD-PANEL if it is useless even if it exchanges it.
LC-32/40/46LE600E/RU/S
5 – 18
<When EXT2 is used for external input>                          No picture on the display (3)-1 
                                            
No composite video output when the EXT2 external input is 
used. 
                                            
Checklist:
1) Is “INPUT SOURCE” button
on the remote control set up correctly? 
••• set it as “EXT2” with the INPUT SOURCE button on the remote con-
trol. 
2) Is MENU-Picture-Backlight/Contrast/Brightness set to “MIN”? 
••• Set it to an appropriate level.
3) Check the connection to the external device 
••• Connect it correctly as per the operation manual for the device. 
4) Attention: The terminal of IC3303 (VCT) cannot be actually checked by hiding oneself, and check it with another terminal of the same line, 
please.
                                            
Is the CVBS video signal sent to pin (20) of SCART2 (SC502)? 
NO
Check external connection, input setting, SCART2 (SC502) and 
peripheral circuits.
YES
Is the CVBS video signal (SC2_CVBS/Y) sent to input terminal 
pin (AD26) of IC3303 (VCT)?
NO
Check IC3303 (VCT), I2C_0 signal (SDA0/SCL0), and peripheral 
circuits. 
YES
Is the LVDS video signal (LVDS0_D [0:4] 
±) input to pins (40)-
(28) of LW Connector (P2601), and is CLK signal (TCLK
±) input 
to pins (32)/(33)?
NO
Check whether there is short circuit between [A6:A11], [B6:B11] 
pin of IC3303 (VCT) and (40)-(28) pin of LW Connector (P2601), 
and peripheral circuits. 
YES
Is the I2C signal (VCOM_SDA/SCL) send to pin(12)/(13) of LP 
Connector (P2602)?
NO
Check the I2C signal of IC2602 and peripheral circuit. 
YES
Is the PNL12V output to pin (1)/(2) of PL Connector (CN7004(32 
inch)/CN7503(40/46 inch)) of POWER UNIT?
NO
Check PL connector of POWER UNIT and U7053(32inch)/
IC7502(40/46inch). 
YES
Exchange LCD-CONT-UNIT and do it operate normally?
NO
Check the contact of the LCD-CONT-UNIT connection harness 
(LW/LP/PL).
Exchange LCD-PANEL if it is useless even if it exchanges it.
LC-32/40/46LE600E/RU/S
5 – 19
<When EXT2 is used for external input>                          No picture on the display (3)-2 
                                            
No Y/C output when the EXT2 external input is used. 
                                            
Checklist:
1) Is “INPUT SOURCE” button
on the remote control set up correctly? 
••• set it as “EXT2” with the INPUT SOURCE button on the remote con-
trol. 
2) Is MENU-Picture-Backlight/Contrast/Brightness set to “MIN”? 
••• Set it to an appropriate level.
3) Check the connection to the external device 
••• Connect it correctly as per the operation manual for the device. 
4) Attention: The terminal of IC3303 (VCT) cannot be actually checked by hiding oneself, and check it with another terminal of the same line, 
please.
                                            
Is the Y/C signal sent to pins (20) and (15) of SCART2 (SC502)?       
(SC2_Y/C2)
NO
Check external connection, input setting, SCART2 (SC502) and 
peripheral circuits.    
YES
Is the Y/C signal (SC2_Y/C2) sent to input terminal pins (AD26) 
and (AF25) of IC3303 (VCT)? 
NO
Check between pins (20) (15) of SCART2 (SC502) and pins 
(AD26) (AF25) of IC3303 (VCT) and peripheral circuits. 
YES
Is the LVDS video signal (LVDS0_D [0:4] 
±) input to pins (40)-
(28) of LW Connector (P2601), and is CLK signal (TCLK
±) input 
to pins (32)/(33)?
NO
Check whether there is short circuit between [A6:A11], [B6:B11] 
pin of IC3303 (VCT) and (40)-(28) pin of LW Connector (P2601), 
and peripheral circuits. 
YES
Is the I2C signal (VCOM_SDA/SCL) send to pin(12)/(13) of LP 
Connector (P2602)?
NO
Check the I2C signal of IC2602 and peripheral circuit. 
YES
Is the PNL12V output to pin (1)/(2) of PL Connector (CN7004(32 
inch)/CN7503(40/46 inch)) of POWER UNIT?
NO
Check PL connector of POWER UNIT and U7053(32inch)/
IC7502(40/46inch). 
YES
Exchange LCD-CONT-UNIT and do it operate normally?
NO
Check the contact of the LCD-CONT-UNIT connection harness 
(LW/LP/PL).
Exchange LCD-PANEL if it is useless even if it exchanges it.
LC-32/40/46LE600E/RU/S
5 – 20
<When EXT3/4/8 is used for external input>                     No picture on the display (4)-1 
                                            
No Component video output when the EXT3 external input is 
used.
                                            
Checklist:
1) Is “INPUT SOURCE” button
on the remote control set up correctly? 
••• set it as “EXT3”/”EXT4”/”EXT8” with the INPUT SOURCE button on 
the remote control.
2) Is MENU-Picture-Backlight/Contrast/Brightness set to “MIN”? 
••• Set it to an appropriate level.
3) Check the connection to the external device 
••• Connect it correctly as per the operation manual for the device.
4) Attention: The terminal of IC3303 (VCT) cannot be actually checked by hiding oneself, and check it with another terminal of the same line, 
please.
                                            
Is the component video signal sent to pin (3) (5) (7) of EXT3 ter-
minal (J503)? (Y, Pb, Pr)
NO
Check external connection, input setting, EXT3 terminal (J503) 
and peripheral circuits.
YES
Is the component video signal (COMP_Y/Pb/Pr) sent to input ter-
minal pin (AE21) (AD22) (AF22) of IC3303 (VCT)?
NO
Check between pins (3) (5) (7) of EXT3 terminal (J503) and pins 
(AE21) (AD22) (AF22) of IC3303 (VCT) and peripheral circuits.
YES
Is the LVDS video signal (LVDS0_D [0:4] 
±) input to pins (40)-
(28) of LW Connector (P2601), and is CLK signal (TCLK
±) input 
to pins (32)/(33)?
NO
Check whether there is short circuit between [A6:A11], [B6:B11] 
pin of IC3303 (VCT) and (40)-(28) pin of LW Connector (P2601), 
and peripheral circuits. 
YES
Is the I2C signal (VCOM_SDA/SCL) send to pin(12)/(13) of LP 
Connector (P2602)?
NO
Check the I2C signal of IC2602 and peripheral circuit. 
YES
Is the PNL12V output to pin (1)/(2) of PL Connector (CN7004(32 
inch)/CN7503(40/46 inch)) of POWER UNIT?
NO
Check PL connector of POWER UNIT and U7053(32inch)/
IC7502(40/46inch). 
YES
Exchange LCD-CONT-UNIT and do it operate normally?
NO
Check the contact of the LCD-CONT-UNIT connection harness 
(LW/LP/PL).
Exchange LCD-PANEL if it is useless even if it exchanges it.
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