HP 4400C HP Scanjet 4400C/5400C Series Scanner Mac - (English) User Manual - Page 88

Checking the basics, Troubleshooting and maintaining, Back to TOC

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Page 88 highlights

88 Troubleshooting and maintaining Checking the basics If the scanner is not working, always perform these actions first. l Check that the power cable is securely connected between the scanner and a live electrical outlet or surge protector. l If the power cable is connected to a surge protector, make sure the surge protector is plugged into an outlet and turned on. l Check that the interface cable is securely connected between the scanner and the computer. Note: The scanner has ports for other interface connections, and a parallel cable might have been shipped in the box with the scanner. However, for Macintosh computers, use the universal serial bus (USB) cable.For more information, see the Setup and Support Guide. l Make sure the scanner is unlocked. Move the lock to the unlocked position. (Some models only, see "Front panel and accessories comparisons" on page 3.) l Disconnect the power cable from the scanner and turn off the computer. After 30 seconds, reconnect the power cable to the scanner and then turn on the computer, in that order. l If a program has frozen, close it. Press OPTION+ (COMMAND KEY)+ESC, and then click Force Quit. If these steps did not resolve the issue, see "Starting troubleshooting" on page 89. Back to TOC

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88
Troubleshooting and maintaining
Back to TOC
Checking the basics
If the scanner is not working, always perform these actions first.
l
Check that the power cable is securely connected between the
scanner and a live electrical outlet or surge protector.
l
If the power cable is connected to a surge protector, make sure the
surge protector is plugged into an outlet and turned on.
l
Check that the interface cable is securely connected between the
scanner and the computer.
Note:
The scanner has ports for other interface connections,
and a parallel cable might have been shipped in the box
with the scanner. However, for Macintosh computers,
use the universal serial bus (USB) cable.For more
information, see the
Setup and Support Guide
.
l
Make sure the scanner is unlocked. Move the lock to the unlocked
position. (Some models only, see
"Front panel and accessories
comparisons" on page 3.
)
l
Disconnect the power cable from the scanner and turn off the
computer. After 30 seconds, reconnect the power cable to the
scanner and then turn on the computer, in that order.
l
If a program has frozen, close it. Press
O
PTION
+
(
C
OMMAND KEY
)
+
E
SC
, and then click
Force Quit
.
If these steps did not resolve the issue, see
"Starting troubleshooting"
on page 89
.