Apple Color OneScanner 600/27 - Manual (Page 173)

165 Assembling a SCSI Chain
The scanner is connected directly to the Macintosh.
Other external SCSI devices are set up beyond the scanner.
All Macintosh computers except Macintosh IIfx and PowerBook Scanner Termination
m A SCSI terminator is needed on last
device in chain.
m Set scanner SCSI ID to number 2,
termination off.
m You can change the scanner ID number
if you need to, but set termination off.
Macintosh PowerBook only Scanner Termination
m No external terminator needed for scanner.
m
Set scanner SCSI ID to number 2,
termination on.
m
You can change the scanner ID number
if you need to, but set termination on.
Scanner is at the beginning of the SCSI chain
Macintosh IIfx only Scanner Termination
m
Use special Apple Macintosh IIfx terminator
on last device in chain.
m
Set scanner SCSI ID to number 2,
termination off.
m You can change the scanner ID number if
you need to, but set termination off.
Macintosh
Scanner
SCSI peripheral cable SCSI system cable
SCSI 1
device
SCSI 2
device
Terminator
IIfx terminator
Macintosh IIfx
Scanner
SCSI system cable SCSI peripheral cable
SCSI 1
device
SCSI 2
device
Scanner
SCSI system cable SCSI peripheral cable
SCSI 1
device
SCSI 2
device
Macintosh
PowerBook
Terminator