LC-52SB55U
6 – 4
No video (4)
No video at UHF/VHF broadcast signal reception No video at digital broadcast signal reception
Is the specified TV signal selected on the input select menu screen?
Is there the analog video signal output (VIDEO) at pin(13) of
tuner(TU1101)?
Are there the video signal outputs (IF_P/N) at the pins(19) and (20) of
tuner(TU1101)?
YES
NO
YES
NO
Check TU1101 and its peripheral
circuits. (SDA3/SCL3, etc.)
Check TU1101 and its peripheral
circuits. (SDA3/SCL3, etc.)
Is there the analog video signal input at pin(AM19) of IC8001(CPU)? Are there the video signal inputs at pin(AM33) and (AM34) of
IC8001(CPU)?
YES
NO
YES
NO
Check the line between IC8001
and TU1101, and their periph-
eral circuits. (Q1103, etc.)
Check the line between IC8001
and TU1101, and their periph-
eral circuits. (L1101, C1103, etc.)
Are the LVDS signal outputs at the LVDS 1st channel and 2nd channel of IC8001?
LVDS_TX_0_DATA0_P/N(C7/B7), LVDS_TX_0_DATA1_P/N(E7/D7), LVDS_TX_0_DATA2_P/N(C6/B6), LVDS_TX_0_DATA3_P/N(C5/B5),
LVDS_TX_0_DATA4_P/N(E5/D5), LVDS_TX_0_CLK_P/N(E6/D6),
LVDS_TX_1_DATA0_P/N(B4/A4), LVDS_TX_1_DATA1_P/N(E4/D4), LVDS_TX_1_DATA2_P/N(B3/A3), LVDS_TX_1_DATA3_P/N(B1/B2),
LVDS_TX_1_DATA4_P/N(F5/F6), LVDS_TX_1_CLK_P/N(C2/C3),
YES NO
Check the panel module. Check IC8001 and its peripheral circuits. (IC8151 thru IC8154, etc.)
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