Sharp TU-GD10U-T Service Manual page 52

TU-GD10U-T
TU-45GAD/T
LC-45GX6U/D/T
TROUBLE SHOOTING TABLE
Are Rx0, 1, 2 and C input to IC1912?
YES
Are there Hsync, Vsync and RGB
DAC signal outputs from IC1912?
YES
Are there Y/Pb/Pr and Hsync/Vsync
signal outputs from MF connector?
YES
Are there RGB, Hsync and Vsync
signal inputs to the main PWB
IC3700 and IC3701?
YES
Check IC3703, IC3701 and the
peripheral circuits.
Is a signal sent to R2801-2810?
Are Hsync, Vsync, blanking and clock output from pins (40),
(73), (74) and (75) of IC2802?
Are the digital video signal and clock output from pin (36) to
(63) of IC3103?
Is pin (13) (Reset) of IC3103 H?
Is the signal output to pins (1), (2), (9), (10), (17), (18), (23) and
(24) of SC3103?
Check the system cable and monitor side.
No HDMI input picture
NO
Is IC1913 data accessed by I2C when
connected to PC?
Is there I2C access after rewriting EDID
data of IC1913?
Check IC1912and the peripheral circuits.
YES Check IC1912, MF connector and the
peripheral circuits.
Check IC1912 and the peripheral
YES
circuits.
YES
Check MF harness for disconnection.
Troubleshooting table of TMDS-Tx
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
(Continued)
YES
NO
YES
NO
Check SC2801 connector and FPC.
Check the periphery of IC2802.
Check the periphery of IC2851, 2855, 2852, 2853 and 2854.
Check SC3101 and harness.
Check the periphery of IC3103.
52
Check the settings of DVD unit.
Check IC1914 and the peripheral
circuits.