Sharp XG-V10WE Service Manual page 47

TROUBLE SHOOTING TABLE FOR PC I/F UNIT-1
Checking the PC PWB
0
Yes
Does the user menu appear
onscreen?
No
Is screen color as specified?
No
Adjust the output system in the
process adjustment.
0
Check the RGB input.
(Check the basic signal flow.
The COMPONENT and VIDEO
signals flow in the same way
from CVIC_IC up to DAC OUT.
No checking is therefore
needed from the CVIC on.)
Check the COMPONENT
input.
(The signal flows in the same
circuit as with the RGB input.
Check the SOG (Sync On
Green) circuit and the color
adjust circuit, among others.)
Check the VIDEO input.
(The VIDEO signal comes to
CVIC_IC via a different route
from the RGB input signal. So
check the VIDEO DACÆEPLL
IC.)
Check the DVI input.
(Check the DVI digital input
and the DVI analog input
alike.)
End
47
Yes
Check the GA4 and its
peripherals.
Overwrite the flash ROM.
XG-V10WE
AN-SD1E/S422E