Sharp LC-46SB57U User Manual

LC-46SB57U/LC-52SB57U
6 – 1
LC-46SB57U
Service Manual
CHAPTER 6. TROUBLESHOOTING TABLE
[1] TROUBLESHOOTING TABLE
No video (1)
COMPOSITE: No external input video [INPUT-1] COMPOSITE: No external input video [INPUT-3]
Is INPUT-1 selected on the input select menu screen? Is INPUT-3 selected on the input select menu screen?
YES
NO
YES
NO
Select INPUT-1 on the input select menu
screen for the right input signal.
Select INPUT-3 on the input select menu screen
for the right input signal.
Does the INPUT-1 V1_PLUG detection func-
tion?
Does the INPUT-3 V3_PLUG detection function?
Check the line between pin (2) of input terminal
(J507) and pin (AJ1) of IC8001 (CPU).
Check the line between pin (7) of input terminal
(J501) and pin (AJ2) of IC8001 (CPU).
Is there the COMPOSITE signal input at pin (AE28) of IC8001
(CPU)?
Is there the COMPOSITE signal input at pin (AE29) of IC8001 (CPU)?
YES
NO
YES
NO
Check the line between pin (3) of J507 and pin
(AE28) of IC8001.
Check the line between pin (6) of J501 and pin
(AE29) of IC8001.
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).
NO Check IC8001 and its peripheral circuits.
(IC8152/IC8153, etc.)
YES
Check the panel module.

Sharp LC-46SB57U Specifications

General

Screen Size	46 inches
Display Technology	LCD
Resolution	1920 x 1080
Aspect Ratio	16:9
Brightness	450 cd/m²
HDMI Ports	3
USB Ports	1
Viewing Angle	176 degrees
Inputs	HDMI, Component, Composite
Speakers	2 x 10W