Avision AVA3 400 - Manual (Page 32)

Scanner Operation
4-5
4.2 USING AVISION SCANNER DRIVER USER
INTERFACE
4.2.1 CHOOSING YOUR SCANNING SOURCE
Two scanning sources are provided - flatbed as well as
transparency. However, if you have not installed the transparency
kit, please leave the source to the flatbed option.
Figure 4-3 Scanning Source