HP Deskjet 640/642c (English) Windows Connect * Reference Manual - Page 11

English Getting Help When Things Go Wrong Solving Common Problems It's frustrating when things go wrong. This section contains tips that can help you determine what the problem is and how to fix it. USB Problems USB Installation. If you accidentally cancelled the USB installation the first time you connected your HP DeskJet printer to your computer, follow these instructions to redisplay the USB installation screens: 1. Disconnect the USB cable from your printer. 2. Insert the printer software CD (or Disk 1 if you have diskettes) into your computer. 3. Click Start Run. 4. Browse to the CD or diskette drive. Select Setup, and then click Open. 5. The setup.exe file will appear in the dialog box. Click OK. 6. Select the Remove HP DeskJet 640C Series Software option. 7. Connect the USB cable to your printer again. The USB installation screen should appear again. 8. Continue with Step 8 on your Quick Start Poster. Printer not responding. Make sure Windows 98 is running and your computer is connected using a USB cable. If you do not have Windows 98, you need to use a parallel cable. USB is not enabled. 1. In Windows 98, click Start Settings Control Panel. 2. Double-click the System icon. 3. Click the Device Manager tab. 4. Click the plus ( + ) icon next to the Universal Serial Bus Controller option. If you see a USB host controller and a USB root hub listed, USB is probably enabled. If you do not see these devices listed, refer to your computer's documentation or contact the manufacturer for more information on enabling and setting up USB. 5. If you cannot enable USB, you can always use a parallel cable to connect your printer's parallel port to your computer. Cable connections. Make sure your USB cable is connected properly. Disconnect and then reconnect the USB cable from your printer, making sure that it is securely attached. Printing speed. When operated on a USB chain, your printer may become slower if other USB devices or software applications are being used while you're printing. For optimal print performance, avoid using other devices in the USB chain while printing. USB hub. If you have connected your printer to a USB hub, and the "Error Writing to USB Port" message appears, your printer isn't getting good data from the other device or hub. Connect the printer directly to the USB port on the computer. Unknown device. If you get an "Unknown device is found" message when you install the USB software, disconnect the USB cable, uninstall the printer software (see page 20), and turn off the computer and printer. Unplug the electrical power to the printer, then reconnect your printer and restart the USB software installation (see your Quick Start Poster). 11