Apple 627 Scanner is at the end of the SCSI chain, Scanner Termination, Macintosh PowerBook only

Scanner is at the end of the SCSI chain

The scanner is at the outside end of a SCSI chain.

Other external SCSI devices are set up between the scanner and the Macintosh.

All Macintosh computers except Macintosh IIfx and PowerBook						Scanner Termination
Macintosh						m No external SCSI terminator is needed.
						m	Use factory setting (SCSI ID number 2,
	SCSI 1	SCSI 2		SCSI 3	Scanner
							termination on); no change is required.
	device	device		device		m
							You can change the scanner ID number if
							you need to, but leave termination on.
SCSI system cable			SCSI peripheral cable

Macintosh IIfx only						Scanner Termination
Macintosh IIfx						m Use special Apple Macintosh IIfx terminator.
						m	Use factory setting (SCSI ID number 2,
	SCSI 1	SCSI 2	SCSI 3
				Scanner			termination off); no change is required.
	device	device	device
						m	You can change the scanner ID number if
					IIfx terminator		you need to, but turn termination off.
SCSI system cable		SCSI peripheral cable

Macintosh PowerBook only						Scanner Termination
Macintosh						m	Use external terminator.
PowerBook						m	Use factory setting (SCSI ID number 2,
	SCSI 1		SCSI 2	SCSI 3	Scanner
Terminator
							termination on); no change is required.
	device		device	device
						m
							You can change the scanner ID number if
							you need to, but leave termination on.
SCSI system cable		SCSI peripheral cable

164 Appendix C