Sharp LC-46D65E/RU Service Manual page 39

No sound from HEADPHONE_OUTPUT terminal.
Is the HP_PLUG signal input to pin (90) of IC9101 (CPLD) from
pin (6) of a HEADPHONE_OUTPUT terminal (J1302)?
Is the audio signal output (HP_L/R) to pins (2, 3) of HEAD-
PHONE terminal (J1302)?
Is HP-MUTE-LINE [pin (70) of IC9101 (CPLD)] at H?
Is audio signal (HP_L/R) output to pins (40, 42) of IC1302
(DSP)?
Check IC1302 and its peripheral circuits.
The picture doesn't appear in all modes.
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)
Is the above-mentioned LVDS signal output to connector
SC2601?
Similarly, is LCD controller's control signal normal?
PANEL_UNIT:
Is the LVDS signal input to connector LW of the panel module?
Check the panel module.
The audio signal is not output (3)
YES
NO
NO
NO
No picture on the display (1)
YES
YES
YES
YES
NO Check the line between J1302 and IC9101.
(J1302, IC9101, etc.)
YES Check the HEADPHONE terminal (J1302) and/or peripheral cir-
cuits.
YES Check the peripheral circuits of IC9101 and HP-MUTE_LINE.
(Q1301, etc.)
YES Check the line between IC1302 and J1302. (IC1305, etc.)
Check IC8101 and its peripheral control circuits.
(IC2003, IC9101, IC8301, IC8302, X8102, etc.)
NO Check the line between IC8101 and SC2601.
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.
NO Wire harness (LW) is checked.
4 – 5
LC-46D65E/RU
NO