HP LaserJet 4250 Service Manual - Page 318

Table 7-1 Initial troubleshooting checklist (continued) ■ Is the media stored correctly and within environmental limits? ■ Is the correct side of the page printed on first? ■ Is long-grain paper being used? Input trays ■ Is the correct amount of media loaded in the tray (not stacked above the arrows embossed in the tray)? ■ Is the media placed in the tray correctly? ■ Are the paper guides aligned with the stack? ■ Is the tray cassette installed correctly in the printer? Print cartridge ■ Is the print cartridge installed correctly? Fuser ■ Is the fuser installed correctly? See Fuser. Covers ■ Is the top cover closed? Condensation ■ Does condensation occur following a temperature change (particularly in winter following cold storage)? If so, wipe off the affected parts or leave the printer on for 10 to 20 minutes and then attempt to resume printing. ■ Was a print cartridge opened soon after it was moved from a cold room to a warm one? If so, allow the print cartridge and the printer to acclimate to room temperature for one to two hours. Miscellaneous ■ Are any non-HP components installed? Check for any non-HP components (print cartridges, memory modules, and EIO cards) installed in the printer and remove them. Hewlett-Packard recommends the use of HP components in its printers. ■ Remove the printer from the network, and make sure that the failure is associated with the printer before beginning troubleshooting. 304 7 Troubleshooting