HP 7400c - Manual (Page 15)

Installing and troubleshooting 15
To test the USB connection
1 Close all applications and shut down the computer.
2 Make sure that the scanner is unlocked.
3 Connect the power cord to the scanner and to an electrical outlet.
4 Turn on all external USB devices, including the scanner.
5 Turn on the computer.
6 Choose Control Panels from the Apple menu, and then choose HP ScanJet
Controls from the submenu.
7 Click the General tab in the HP ScanJet Controls dialog box.
8 Click USB, and then select the model number of your scanner from list, if it is
not already selected. (The scanner you select becomes the default scanner.)
9 Click Refresh.
10 Press the HP S CANNING S OFTWARE button on the front of the scanner. If the
scanner is connected correctly, the HP scanning software appears.
If USB still is not detected, use the SCSI connection. See "Checking the SCSI
connection" on page 16 .