LC-52D65E (serv.man5). Troubleshooting Table - Sharp TV Service Manual (repair manual). Page 5

LC-52D65E/RU

4 – 5

                                             

Is the HP_PLUG signal input to pin (90) of IC9101 (CPLD) from 
pin (6) of a HEADPHONE_OUTPUT terminal (J1302)?

NO

Check the line between J1302 and IC9101.
(J1302, IC9101, etc.)

YES

Is the audio signal output (HP_L/R) to pins (2, 3) of HEAD-
PHONE terminal (J1302)?

YES

Check the HEADPHONE terminal (J1302) and/or peripheral cir-
cuits.

NO

Is HP-MUTE-LINE [pin (70) of IC9101 (CPLD)] at H?

YES

Check the peripheral circuits of IC9101 and HP-MUTE_LINE.
(Q1301, etc.)

NO

Is audio signal (HP_L/R) output to pins (40, 42) of IC1302 
(DSP)?

YES

Check the line between IC1302 and J1302. (IC1305, etc.)

NO

Check IC1302 and its peripheral circuits.

                                             

Is the LVDS signal output from IC8101 (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 IC8101 and its peripheral control circuits.
(IC2003, IC9101, IC8301, IC8302, X8102, etc.)

Is the above-mentioned LVDS signal output to connector 
SC2601?

NO

Check the line between IC8101 and SC2601.

                                             

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.

PANEL_UNIT:                       

YES

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

NO

Wire harness (LW) is checked. 

 YES

Check the panel module.