HP LaserJet 4250 Service Manual - Page 352
INSTALL CARTRIDGE, For help press, INSTALL FUSER - fuser replacement
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Table 7-6 Alphabetical printer messages (continued) Control panel message Description Recommended action 5 If the tray settings on the configuration page are correct, verify that the tray paper-out sensor is operating. See Printer switches and sensors, 500sheet feeder switches, sensors, solenoids, and PCAs or 1,500-sheet feeder switches, sensors, solenoids, and PCAs. INSTALL CARTRIDGE alternates with For help press The cartridge is either not installed or not correctly installed in the printer. 1 Insert the cartridge, or make sure that the cartridge is fully seated. 2 Press ( HELP button) for detailed information. 3 Press ( UP ARROW button) and (DOWN ARROW button) to step through the instructions. 4 If the error persists, replace the cartridge. 5 Verify that the connectors between the power supply and transfer assembly are not damaged. 6 Replace the power-supply assembly. See Power supply. INSTALL FUSER For help press The fuser is either not installed or not correctly installed in the printer. 1 The fuser is not fully seated or has been removed and must be reinstalled for printing to continue. See Fuser. ● If the fuser is in the printer, remove and reinstall it. ● If the fuser is not in the printer, install it. 2 Push the fuser firmly into the printer until the blue levers on both sides click into place. 3 Press ( HELP button) for detailed information. 4 Press ( UP ARROW button) and (DOWN ARROW button) to step through the instructions. 5 If the error persists, replace the fuser assembly. See Fuser. 6 Replace the dc controller PCA. See Dc controller PCA. 7 Replace the power-supply assembly. See Power supply. 338 7 Troubleshooting