Sharp LC 52SB55U Service Manual

LC-52SB55U
6 – 1
LC-52SB55U
Service Manual
CHAPTER 6. TROUBLE SHOOTING TABLE
[1] TROUBLE SHOOTING 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 termi-
nal(J507) and pin(K32) of IC8001(CPU).
Check the line between pin(7) of input terminal(J501)
and pin(J34) of IC8001(CPU).
Is there the COMPOSITE signal input at pin(AN16) of
IC8001(CPU)?
Is there the COMPOSITE signal input at pin(AN17) of
IC8001(CPU)?
YES
NO
YES
NO
Check the line between pin(3) of J507 and
pin(AN16) of IC8001.
Check the line between pin(6) of J501 and pin(AN17)
of IC8001.
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.)

Sharp LC 52SB55U Specifications

General

Brand	Sharp
Model	LC 52SB55U
Category	LCD TV
Language	English