Visioneer One Touch 9420 - Manual (Page 48)

S CANNING F ROM THE TWAIN I NTERFACE 41
8. Click Next.
The TWAIN Interface opens.
9. Click the Scan button on the TWAIN interface.
The Setup Wizard runs the scan test.
A message window opens that says “Basic scan test passed.”
Note: If you are setting up the scanner for WIA, the WIA interface
opens instead.