HP LASERJET 4250 TONER CARTRIDGE - HIGH YIELD

The lifespan of the fuser unit installed in your HP LaserJet 4250 is approximately 225,000 printouts. You should replace the installed fuser unit if any of the listed problems persists.

· The error message [INSTALL FUSER] is displayed

· The error message [13.1C.00 FUSER JAM] is displayed

· The error message [50.X FUSER ERROR] is displayed

· Specks or dots appear

· Lines

· Loose toner

· Toner smear

In the initial step of the replacement procedure, you must make sure that your HP LaserJet 4250 is switched off, and then unplug the power cord. After that, you must open the rear output bin, and then detach the hinge pin from the mounting hole. Now, you must remove the output bin by rotating it away from the main unit, and then release the exhausted fuser unit by squeezing the blue tabs. In the next step of the replacement procedure, you must pull the exhausted fuser unit out of the HP LaserJet 4250, and then unpack the replacement component. Finally, you must install the new fuser unit by executing the current procedure in reverse order.

You should replace the formatter installed in your HP LaserJet 4250 if any of the listed problems persists.

· You hear that the printer fans are running but the control panel display remains blank

· The engine test page does not print

· The HP LaserJet 4250 and the host computer cannot establish a connection

· The error message [49.XXXX PRINTER ERROR] is displayed

· The error code [49.24.02] is displayed

· The error message [55.X PRINTER ERROR] is displayed

· The error message [PERMANENT STORAGE ERROR] is displayed

· The error message [68.X PERMANENT STORAGE FULL] is displayed

· The error message [68.X PERMANENT STORGE WRITE FAIL] is displayed

· The error message [8X.YYYY EIO ERROR] is displayed

In the first step of the replacement procedure, you must switch the HP LaserJet 4250 off, and then unplug the power cord. After that, you must remove the formatter cover by sliding it towards the rear side of the main unit, and then remove the two fixing screws from the exhausted formatter. Now, you must remove the exhausted formatter by sliding it toward the rear side of the main unit, and then unpack the replacement component. Finally, you must install the new formatter by executing the current procedure in reverse order.

You should replace the laser scanner assembly installed in your HP LaserJet 4250 if any of the listed problems persists.

· The error message [51.XY PRINTER ERROR] is displayed

· The error message [52.XY PRINTER ERROR] is displayed

· Black and/or white lines appear

· Images are distorted

· Solid black printouts

Initially, you must switch your HP LaserJet 4250 off, and then unplug the power cord. After that, you must remove the rear accessory cover, and then remove the top cover. Now, you must remove the right side cover, and then remove the formatter cover. In the next step of the replacement procedure, you must unplug the wire-harness connector of the exhausted laser scanner assembly from the dc controller PCA, and then detach the harness from the guide. After that, you must remove the four screws that secure the exhausted laser scanner assembly to the main frame, and then remove the grounding clips. Once you have removed the clips, you must unplug the harness of the exhausted laser scanner assembly from the PCA, and then remove the exhausted component. Finally, you must unpack the new laser scanner assembly, and then install it by executing the current procedure in reverse order.

You should replace the power supply installed in your HP LaserJet 4250 if any of the listed problems persists.

· The error message [49.24.02] is displayed

· The error message [50.X FUSER ERROR] is displayed

· The error message [57.4 MAIN FAN ERROR] is displayed

· The error message [58.4 PRINTER ERROR] is displayed

In the initial step of the replacement procedure, you must remove the rear output bin from the HP LaserJet 4250, and then remove the rear accessory cover. After that, you must remove the extension door of Tray 2, and then detach the PCA guide by removing the two fixing screws. Now, you must remove the top cover, and then remove the right cover. In the next step of the replacement procedure, you must remove the left cover, and then remove the fuser unit. Once you have removed the fuser unit, you must remove the formatter, and then remove the three fixing screws. Next, you must remove the grounding screw, and then remove the power switch arm. After that, you must unplug the power supply FFC and the dc controller power connector from the dc controller, and then detach the cover plate of the fan by removing the two fixing screws. Now, you must unplug the connectors of the left side fan and the thermistor sensor from the power supply PCA, and then remove the three screws. In the next step, you must remove the power switch connector, and then remove the exhausted power supply. Finally, you must unpack the new power supply, and then install it by executing the current procedure in reverse order.

You should replace the main motor installed in your HP LaserJet 4250 if any of the listed errors persists.

· [59.00 MOTOR FAILURE]

· [59.10 MOTOR FAILURE]

· [59.20 MOTOR FAILURE]

· [59.2 MAIN MOTOR ROTATION ERROR]

In the first step of the replacement procedure, you must remove the rear accessory cover, and then remove the top cover. After that, you must remove the right cover, and then remove the formatter cover. Now, you must unplug the two FFCs and the main motor connector from the dc controller PCA, and then detach the cables from the guide. In the next step of the replacement procedure, you must remove the three screws that secure the exhausted main motor to the main printer frame, and then remove the exhausted component. Finally, you must unpack the new main motor, and then install it by executing the current procedure in reverse order.

You must start the replacement procedure by unplugging the power cord of your HP LaserJet 4250. Then, you must remove the top cover. After that, you must remove the right cover, and then remove the right side fan. Now, you must remove the fan duct, and then remove the toner cartridge motor. In the next step of the replacement procedure, you must remove the main motor, and then remove the dc controller PCA. Once you have removed the dc controller PCA, you must remove the cable guide by releasing the two tabs, and then remove the FFC guide by releasing its tab. Next, you must release the spring of the lifting assembly, and then remove the five fixing screws. Finally, you must remove the exhausted main drive assembly, and then install the replacement component by executing the current procedure in reverse order.