HP Scanjet 7450c HP Scanjet 7400C Series Scanner Mac - (English) Setup and Sup - Page 18

SCSI troubleshooting, computer to see if the problem is with the scanner or with another SCSI device

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18 Installing and troubleshooting SCSI troubleshooting If the scanner test fails, follow these steps. q Repeat basic troubleshooting. See "Performing basic troubleshooting" on page 12. q Make sure the SCSI chain is less than 20 feet (6 meters) long, including any cabling to SCSI devices inside the computer. q If other SCSI devices are connected to the computer, make sure the scanner is the last physical device in the SCSI chain. q Disconnect all other SCSI devices and connect the scanner directly to the computer to see if the problem is with the scanner or with another SCSI device or cable. q Make sure that any SCSI devices connected between the computer and the scanner have their termination turned off. q Check for an address conflict. See "Changing the SCSI address" below.

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18
Installing and troubleshooting
SCSI troubleshooting
If the scanner test fails, follow these steps.
●
Repeat basic troubleshooting. See
"Performing basic troubleshooting" on
page 12
.
●
Make sure the SCSI chain is less than 20 feet (6 meters) long, including any
cabling to SCSI devices inside the computer.
●
If other SCSI devices are connected to the computer, make sure the scanner is
the last physical device in the SCSI chain.
●
Disconnect all other SCSI devices and connect the scanner directly to the
computer to see if the problem is with the scanner or with another SCSI device
or cable.
●
Make sure that any SCSI devices connected between the computer and the
scanner have their termination turned off.
●
Check for an address conflict. See “
Changing the SCSI address
” below.