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Silicon Image, Inc.
Scan Plus v2 User Manual
23
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These modifications are only required in very rare circumstances. Composite Sync and Sync-on-
Green are only required in RGB mode (never Component video/Y-Pr-Pb mode) and typically
only with older, large front projectors. The rule of thumb is, if you are seeing a picture on your
display, then you have the sync settings correct. VCR mode is only needed for the few displays
that are unable to handle the erratic timing of a VCR.
To modify these internal settings, you will need to change a jumper that is only available after
opening up your iScan Plus v2 unit. Read through these instructions first and if you feel that you
are not comfortable with performing this type of operation, please ask your dealer to make the
modification for you. They are generally happy to do so.
Removing the iScan Plus v2 motherboard
13) Find an electrostatic-free environment to work at. Having no carpeting or static-free
carpeting is strongly recommended. If you can find an area with some heavy metal parts
within easy reaching distance, touching these will allow you to discharge yourself before
beginning work.
14) Turn the iScan Plus v2 unit so that the
back of the unit is facing you.
Remove the two screws on the back
of the unit and set aside in a safe
place – you will definitely need these
screws later!
15) Discharge yourself by touching some
grounded, heavy metal object nearby.
16) Pull the back panel and EMI gasket
off of the unit. The iScan Plus v2
printed circuit board is seated in the
bottom slot in the chassis housing.
17) Notice the small metal clip straddling the board below the power input connector. You will
need to remove this clip and put it aside
for replacement later so pay careful
attention to how it is mounted on the
board. (See picture on next page).
18) Pull the board all of the way out of the
housing.
19) There are three sets of jumpers on the
board shown on the figure at right. Each
of these locations should have three pins
sticking straight up out of the board with
a little plastic jumper straddling two of
these pins.
Modifying Composite Sync
Jumper Setting
20) To configure the unit to output
Composite Sync, you should work with
the jumper labeled “C-SYNC”. A little
plastic jumper should already be
Rear Panel Screws
Sync-on-Green
Composite Sync
VCR Mode
Front of board
Rear of board