LC-40/46/52/60LE820UN
7 – 1
LC-40LE820UN
Service Manual
CHAPTER 7. TROUBLESHOOTING TABLE
[1] TROUBLESHOOTING TABLE
No video (1)
COMPOSITE: No external input video [INPUT-2]
Is INPUT-2 selected on the input select menu screen?
YES
NO
Select INPUT-2 on the input select menu
screen for the right input signal.
Is there the COMPOSITE signal input at pin (AE29) of IC3302
(CPU)?
YES
NO
Check the line between pin (3) of J505 and pin
(AE29) of IC3302.
Are the LVDS signal outputs at the LVDS 1st channel and 2nd channel of IC3302?
LVDS_TX_0_DATA0_P/N (C14/D14), LVDS_TX_0_DATA1_P/N (C15/D15),
LVDS_TX_0_DATA2_P/N (C16/D16), LVDS_TX_0_DATA3_P/N (C18/D18),
LVDS_TX_0_DATA4_P/N (C19/D19), LVDS_TX_0_CLK_P/N (C17/D17),
LVDS_TX_1_DATA0_P/N (A14/B14), LVDS_TX_1_DATA1_P/N (A15/B15),
LVDS_TX_1_DATA2_P/N (A16/B16), LVDS_TX_1_DATA3_P/N (A18/B18),
LVDS_TX_1_DATA4_P/N (A19/B19), LVDS_TX_1_CLK_P/N (A17/B17).
NO Check IC3302 and its peripheral circuits.
(IC3501/IC3502, etc.)
YES
Check the panel module.
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