Read Sharp LC-37GA3E (serv.man8) Service Manual online
45
LC-32GA3E
LC-37GA3E
LC-37GA3E
TROUBLE SHOOTING TABLE
(Continued)
NO
YES
YES
YES
NO
NO
NO
NO
NO
Are there RGB signal inputs at pins
(25), (26) and (27), and Hsync/Vsync
signal inputs at pins (8) and (28) from
DVI connector (SC1900)?
(25), (26) and (27), and Hsync/Vsync
signal inputs at pins (8) and (28) from
DVI connector (SC1900)?
Are there Vsync and Hsync signal
outputs at pins (4) and (6) of IC1904
(INVERTER)?
outputs at pins (4) and (6) of IC1904
(INVERTER)?
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(CONTROL) both (L, L)?
IC1917(CONTROL) both (L, L)?
Check PC settings.
Check IC1915 and its
peripheral circuits.
peripheral circuits.
Check IC1917 and its
peripheral circuits.
peripheral circuits.
Check IC1904 and its peripheral
circuits.
circuits.
Check IC1901, IC1903 and their
peripheral circuits.
peripheral circuits.
Do output pins (12) and (14) of
IC1917 become (H, H) when digital
PC mode is entered?
IC1917 become (H, H) when digital
PC mode is entered?
NO
YES
YES
Check ME connector I2C signal line.
Are IC1911(E2PROM) data accessed
by I2C when connected to PC?
by I2C 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 (Analog AV is not displayed) (4)
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