HP LaserJet 4250 Service Manual - Page 316
Display-message troubleshooting, Interface troubleshooting
View all HP LaserJet 4250 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 316 highlights
Introduction In order to use the information in this chapter, you should have a basic understanding of the laserjet printing process. Explanations of each mechanical assembly, the printer systems, and the basic theory of operation are contained in chapter 5 of this manual. Do not perform any of these troubleshooting processes unless you understand the function of each printer component. This chapter contains the following sections: ■ Troubleshooting process This section includes an initial troubleshooting checklist and a troubleshooting flowchart. These contain information about common printer errors that can inhibit operation or create print-quality problems. They also include recommendations for resolving the cause of the problem. See Troubleshooting process. ■ Troubleshooting tools This section contains information that helps to isolate the cause of printer failures. This section contains information about printing information and test pages, resetting printer options, using the diagnostics and service menus, and using the embedded Web server. See Troubleshooting tools. ■ Interface troubleshooting This section provides techniques for isolating the source of communication problems to the printer hardware, the printer configuration, the network configuration, or the software program. See Interface troubleshooting. ■ Display-message troubleshooting This section explains each control-panel-display message and suggests recommendations for resolving the cause of each message. When the printer message indicates a failure for which the root cause is not obvious, use the troubleshooting process section and the troubleshooting tools section in this chapter to solve the problem. See Display-message troubleshooting. ■ Paper-path troubleshooting This section provides information to help solve feed problems, including print media checks, jam troubleshooting checks, and information about media-caused and printer-caused jams. See Paper-path troubleshooting. ■ Image-formation troubleshooting This section explains methods for solving print-quality problems. See Image-formation troubleshooting. ■ Stacker and stapler/stacker troubleshooting This section provides information about solving stacker and stapler/stacker problems. See Troubleshooting the stacker and the stapler/stacker. ■ Printer and accessory components This section contains illustrations and tables that list the printer and accessory internal components. See Printer-component locations and Accessory component locations. ■ Printer and accessory wiring diagrams This section contains wiring diagrams for the printers and accessories. See Printer and accessory wiring diagrams. ■ General timing diagrams This section contains timing diagrams for the printer. See General timing diagrams. 302 7 Troubleshooting