Contex Wide Format Color Operator's Manual page 19

Installation 3-14
Troubleshooting and Test Controls – switches 5, 6, 7 and 8
Switch 5. No synchronous transfer: Disables SCSI synchronous
transfer mode (reverts to asynchronous transfer). Only use this mode
for testing as it slows the scanner down.
Switch 6. Not in use – no effect.
Switch 7. Force boot start up: If a malfunction occurred during an
update of the scanner firmware, this switch forces the scanner into
firmware boot mode, enabling you to download the firmware again.
Switch 8. Continuous test mode: The continuous test mode is only
used for special technical maintenance and renders the scanner
inaccessible.
Important: For normal scanning, make sure that none of the
troubleshooting and test control switches are on.