LC-46DH65E/S, LC-46DH66E
4 – 6
No picture on the display (1)
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)
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.
No picture on the display (2)
Does not the picture come out when VHF/UHF is received?
Is the video signal (TUNER_CVBS) output from pin (6) of
TUNER(TU7501)?
NO Check whether I2C signal normally communicates between
TU7501 and IC7508 (COFDM - DEMOD.)
YES
Is the video signal (TUNER_CVBS) sent to pins (24) of
IC503(AV_SW.)?
NO Check the line between TU7501 and IC503.
(IC7503, etc.)"
YES
Refer to “The picture doesn't appear in all modes.”
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