Read Sharp LC-45GD1E (serv.man29) Service Manual online
57
TU-45GD1E
LC-45GD1E
LC-45GD1E
TROUBLE SHOOTING TABLE
(Continued)
NO
NO
NO
NO
NO
NO
Are the R/G/B and DTV-H/V signal
input from Pins (25)(26)(27) and Pins
(28)(8) of INPUT5=DVI Connector
(SC1900) respectively?
Is the DVI-H/V signal output from
Pins (4)(6) of IC1904 (INV)?
Are the DVI-SR/SG/SB and the DVI-
H/V signal output from the MD
Connector (P1900)?
Are outputs at pins (12) and (14) of
IC1917 both (H, L)?
Check PC settings.
Check IC1915 and its
peripheral circuits.
Check IC1917 and its
peripheral circuits.
Check IC1904 and its
peripheral circuits.
Check IC1901, IC1903 and
their peripheral circuits.
Do pins (12) and (14) of IC1917 become
(L, H) when digital AV mode is entered?
NO
YES
YES
YES
YES
YES
Check Pins (1)(2) of IC1917 thru Pins
(8)(9) of the ME Connector signal line
(I2C).
Are IC1915 data accessed by I2C
when connected to PC?
Are the DVI-SR/SG/SB and the DVI-
H/V signal input to Pins
(126)(136)(141) of IC3700 (ADC) and
Pins (2)(5) of IC3701 (SYNC_SEL) in
the MAIN-PWB respectively?
Check MD harness for
disconnection.
YES
Check IC3700 (ADC), IC3701 (SYNC-
SEL) and their peripheral circuits.
YES
DVI Input (Analog PC mode)
Check the settings: Using the INPUT
SOURCE button ( ) on the remote controller
, select
"INPUT5". Select "Option Input Select" on the menu, and set the input signal type (Signal
T
ype) to
"PC digital".
No picture even at DVI video input (analog signal from PC)(2)
NO
NO
NO
NO
NO
NO
Is the RX0.1.2.C signal input from the
INPUT5=DVI Connector (SC1900) to
Pins (2)(3)(51)(52) of IC1900 (HDCP)?
Are the DVI-H/V and the DVI-R/G/B
signal output to Pins (18)(19) and Pins
(23)(26)(31) of IC1900 respectively?
Are the DVI-SR/SG/SB and the DVI-
H/V signal output from the MD
Connector (P1900)?
Are outputs at pins (12) and (14) of
IC1917 both (H, H)?
Check PC settings.
Check IC1915 and its
peripheral circuits.
Check IC1917 and its
peripheral circuits.
Check IC1900 and its
peripheral circuits.
Check IC1901, IC1903 and
their peripheral circuits.
Do pins (12) and (14) of IC1917 become
(L, L) when analog AV mode
is entered?
NO
YES
YES
YES
YES
YES
Check Pins (1)(2) of IC1917 thru Pins
(8)(9) of the ME Connector signal line
(I2C).
Are IC1915 data accessed by I2C
when connected to PC?
Are the DVI-SR/SG/SB and DVI-H/V
signal input to Pins (126)(136)(141)
of IC3700 (ADC) and Pins (2)(5) of
IC3701 (SYNC_SEL) in the MAIN-
PWB respectively?
Check MD harness for
disconnection.
YES
Check IC3700 (ADC), IC3701(SYNC-
SEL) and their peripheral circuits.
YES
DVI Input (Digital PC mode)
Check the settings: Using the INPUT
SOURCE button ( ) on the remote controller
, select
"INPUT5". Select "Option Input Select" on the menu, and set the input signal type (Signal
T
ype) to
"PC digital".
No picture even at DVI video input (digital signal from PC) (1)
Click on the first or last page to see other LC-45GD1E (serv.man29) service manuals if exist.