Troubleshooting - DVDO iScan Ultra Product Manual

Troubleshooting

15
The iScan Ultra has been designed
to process standard interlaced
NTSC/PAL/SECAM video inputs, and
output 480p/576p progressive scan video
at 31.5kHz/31.25kHz scan rates. A digital
video DVI output can also be generated
from an NTSC or PAL/SECAM input, but
not from the Pass-Thru input.
The iScan Ultra should work with a
typical home theater system. Below are
some steps to take when experiencing
the problems below.
No LEDs light when I plug in
the power supply.
The iScan Ultra should automatically
switch "on" when plugged in as indicated
by the power LED. If this does not occur,
check the connections to the iScan Ultra,
and to the power source. If these connec-
tions are made correctly and the power
LED does not light, you may have a defec-
tive power supply or a defective unit.
The power is on but I see no
image on my display.
The basic troubleshooting procedure is:
1) Confirm that the iScan Ultra is
powered up (see above)
2) Confirm that an active video input
is present by plugging the output
of your video source directly into
your display
3) Confirm that the correct video input
has been selected
4) Confirm that your display is
connected to the correct video output
(either the DVI connector or the
Analog VGA-type connector, not the
'Pass-Thru' connector)
5) Using the 'Output Control' button and
the 'Adjust' buttons, confirm that:
the correct output format
(Analog/DVI) has been selected
the correct color space (RGB or Yuv)
has been selected
the correct Sync has been selected,
either separate sync (H+V), composite
sync (CSY) or sync on green (SOG)
if the DVI output is being used:
Confirm that the 'Pass-Thru' input
is not used for video input
Confirm that the display is compati-
ble with a 480p digital signal (for
NTSC sources) or 576p digital signal
(for PAL/SECAM sources)
If an NTSC video source is being
used, try both DVI formats ('640'
and '720')
I still see no image on
my display.
6) In order to test the output, we rec-
ommend connecting the iScan Ultra
output to a computer monitor:
Use a standard VGA-to-VGA computer
monitor cable (make sure that you
use a different cable than the one
that you are using for your display)
Confirm that the 'Analog' output
connector (not the 'Pass-Thru' con-
nector) is used to provide the signal
to your computer monitor
Using the 'Output Control' and 'Adjust'
buttons:
Set 'Analog/DVI' to 'VGA'
Set the 'color space' to 'RGB'
Set 'Sync' to 'H+V'