Chapter 6. Trouble Shooting Table; Trouble Shooting Table - Sharp LC-42D65U Service Manual

CHAPTER 6.
LC-42D65U

TROUBLE SHOOTING TABLE

[1] TROUBLE SHOOTING TABLE
COMPOSITE: No external input video
[INPUT-1]
Is INPUT-1 selected on the input select menu screen?
Select INPUT-1 on the input select menu
screen for the right input signal.
Does the INPUT-1 V1_PLUG detection func-
tion?
Check the line between pin(2) of input termi-
nal(J507) and pin(K32) of IC8001(CPU).
YES
Is there the COMPOSITE signal input at pin(AN16) of
IC8001(CPU)?
Check the line between pin(3) of J507 and
pin(AN16) of IC8001.
YES
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),
Check the panel module.
No video (1)
NO
NO
YES
Service Manual
COMPOSITE: No external input video
Is INPUT-3 selected on the input select menu screen?
Select INPUT-3 on the input select menu screen for
the right input signal.
Does the INPUT-3 V3_PLUG detection function?
Check the line between pin(7) of input terminal(J501)
and pin(J34) of IC8001(CPU).
YES
Is there the COMPOSITE signal input at pin(AN17) of
IC8001(CPU)?
Check the line between pin(6) of J501 and pin(AN17)
of IC8001.
YES
Check IC8001 and its peripheral circuits. (IC8151 thru
IC8154, etc.)
6 – 1
LC-42D65U
[INPUT-3]
NO
NO
NO