LC-40LU700E (serv.man9). Troubleshooting Table - Sharp TV Service Manual (repair manual). Page 11

LC-32/40/46LE700E/RU/S,LU700E/S,LX700E/RU,LC-52LE700E/RU/S

6 – 11

                                            

                                            

YES

Is the LVDS signal output from IC3302(DIGITAL_AV_DECODER_&_MAIN_CPU_&_VIDEO PROCESSER) respectively?
TA1_P/M (AC25/AC26), TB1_P/M (AD25/AD26), TC1_P/M (AE25/AE26), TD1_P/M (AE24/AF24), TE1_P/M (AE23/AF23), TCLK1_P/M (AF25/
AF26), TA2_P/M (AE22/AF22), TB2_P/M (AE21/AF21), TC2_P/M (AE20/AF20), TD2_P/M (AE18/AF18), TE2_P/M (AE17/AF17), TCLK2_P/M 
(AE19/AF19)

YES

NO

Check IC3302 and its peripheral control circuits.
(IC2002, IC3501, IC3502, X3302, etc.)

Is the above-mentioned LVDS signal output to connector P2601? 

NO

Check the line between IC3302 and P2601.

YES

Similarly, is LCD controller's control signal normal? 

NO

Please check each control signal of L/R, U/D, HV_MODE, 
ROMSEL_0/1, TEMP3/2/1, OS_EN, SHIP_EN, and PE.

YES

PANEL_UNIT: 
Is the LVDS signal input to connector LW of the panel module? 

NO

NO Wire harness (LW) is checked.

YES

Check the panel module.

                                            

Is the video signal (TUNER_CVBS) output from pin (6) of 
TUNER(TU1101)?

NO

Check the tuner and its peripheral circuits.
Replace as required.

YES

Is the video signal (TUNER_CVBS) sent to pin (AD29/
TU_CVBS) of IC3302
(Digital AV decode & Main CPU)? 

NO

Check the line between TU1101 and IC3302.
(Q1106, etc.)

YES

Refer to “The picture doesn't appear in all modes.”

                                            

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 p(AA29/D__IF_P, AB29/D__IF_N) of 
IC3302(Digital AV decode & Main CPU)? 

NO

Check the line between TU1101 and IC3302.

YES

Refer to “No sound output in all modes”