Sharp TU-45GAD, Service Manual

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