Chapter 6. Troubleshooting Table; Troubleshooting Table - Sharp LC-60E77UN Service Manual

CHAPTER 6.
LC60E77UN

TROUBLESHOOTING TABLE

[1] TROUBLESHOOTING TABLE
COMPOSITE: No external input video [INPUT-1]
Is INPUT-1 selected on the input select menu screen?
NO
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 (7) of input terminal
(J507) and pin (AJ1) of IC8001 (CPU).
YES
Is there the COMPOSITE signal input at pin (AE28) of IC8001
(CPU)?
NO
Check the line between pin (8) of J507 and pin
(AE28) of IC8001.
YES
Are the LVDS signal outputs at the LVDS 1st channel and 2nd channel of IC8001?
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).
YES
Check the panel module.
LC-60E77UN/LC-65E77UM/LC-C6077UN/LC-C6577UM
Service Manual
No video (1)
COMPOSITE: No external input video [INPUT-3]
Is INPUT-3 selected on the input select menu screen?
YES
Is there the COMPOSITE signal input at pin (AE29) of IC8001 (CPU)?
YES
NO
6 – 1
NO
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 (AJ2) of IC8001 (CPU).
NO
Check the line between pin (6) of J501 and pin
(AE29) of IC8001.
Check IC8001 and its peripheral circuits (IC8152/
IC8153, etc.).