Microtek ScanMaker 3600 User Manual page 102

the memory size should be increased.
To expand memory:
1. Close ScanWizard 5 and any other applications.
2. Enable Virtual Memory. To do this: From the Apple menu, choose Control,
then Memory; when the Memory window appears, select "On" for the Virtual
Memory option, then change the built-in memory to 900M.
3. Select the ICE Module icon in the ScanWizard 5 folder.