Read Sharp LC-37GA3E (serv.man8) Service Manual online
44
LC-32GA3E
LC-37GA3E
LC-37GA3E
TROUBLE SHOOTING TABLE
(Continued)
NO
YES
YES
YES
NO
NO
NO
NO
NO
Are there Rx0, 1, 2 and C signal
inputs to IC1900 (HDCP_LSI)?
inputs to IC1900 (HDCP_LSI)?
Are signals sent from Hsync (pin 18),
Vsync (pin 19) and RGB (pins 23, 26
and 31) of IC1900?
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?
signals sent from MD connector?
Are outputs at pins (12) and (14) of
IC1917 both (H, H)?
IC1917 both (H, H)?
Check PC settings.
Check IC1911 and its
peripheral circuits.
peripheral circuits.
Check IC1917 and its
peripheral circuits.
peripheral circuits.
Check IC1900 and its peripheral
circuits.
circuits.
Check IC1901, IC1903 and their
peripheral circuits.
peripheral circuits.
Do output pins (12) and (14) of IC1917
become (H, L) when analog PC mode
is entered?
become (H, L) when analog PC mode
is entered?
NO
YES
YES
Check ME connector I2C signal line.
Are IC1911 data accessed by I2C
when connected to PC?
when connected to PC?
Are DVI_SR/SG/SB and DVI_H/V
signals supplied to IC3700 (ADC)
and 3701 (SYNC_SELECTOR) on
the main PWB?
signals supplied to IC3700 (ADC)
and 3701 (SYNC_SELECTOR) on
the main PWB?
Check MD harness for disconnection.
YES
Check IC3700, IC3701 and their
peripheral circuits.
peripheral circuits.
YES
Image from DV1 input does not appear (digital AV is not displayed) (3)
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