Sharp Aquos LC-32GD4U, Service Manual

Page: 48 / 222

48
LC-32GD4U
LC-37GD4U
TROUBLE SHOOTING TABLE
(Continued)
NO YES
YES
YES
NO
NO
NO
NO
NO
Are there Rx0, Rx1, Rx2 and RxC
signal inputs to IC1900 (HDCP_LSI)?
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) become (L, L)
when analog AV mode is entered?
NO
YES
YES
YES
YES
Check ME connector I2C signal line.
Are IC1915 data accessed by I2C
when connected to PC?
Check ME harness for
disconnection.
DVI Input (Digital PC mode)(1)
Are signals sent from Hsync (pin 18),
Vsync (pin 19) and RGB (pins 23, 26
and 31) of IC1900 ?
Are DVI_SR/SG/SB and DVI_H/V
signals sent from MD connector?
YES
Are DVI_SR/SG/SB and DVI_H/V
signals supplied to IC3700 (ADC)
and 3701 (SYNC_SELECTOR) on
the main PWB?
YES
YES
Check IC3700, IC3701 and their
peripheral circuits.