User Guide

Performing preventive maintenance

Replace specific parts when the PERFORM PRINTER MAINTENANCE message appears on the

printer control-panel display. This helps the printer maintain optimum performance.

The maintenance message appears every 200,000 pages on HP LaserJet 4200/4300 Series printers

or every 225,000 pages on HP LaserJet 4250/4350 Series printers. The message can be temporarily

cleared for approximately 10,000 pages by using the CLEAR MAINTENANCE MESSAGE item on

the Resets submenu (see

Control-panel menus). To check the number of pages that the printer has

printed since new maintenance-kit components were installed, print either a configuration page (see

Configuration page) or a supplies status page (see Supplies status page).

To order the printer maintenance kit, see

Parts and diagrams. The kit includes the following

components:

■ Fuser

■ Printer rollers (transfer, feed, and separation, and tray 1 pickup)

■ Tray 1 rollers

■ Rollers for optional 500-sheet feeders

■ Rollers for optional 1,500-sheet feeder

■ Installation instructions

NOTE The printer maintenance kit components are consumable items that are not typically

covered under the original printer warranty or under most extended warranties.

Resetting the maintenance-kit counter (LJ 4200/4300)

After a maintenance kit is installed, the maintenance-kit counter must be reset by using the following

procedure.

1 Turn the printer power off.

Hold down

ELECT

button), and then turn on the printer power. Continue holding down until

all three printer control-panel lights flash once and then remain on. This might take up to 10

seconds.

Press

RROW

button) to scroll to NEW MAINTENANCE KIT.

Press

to reset the maintenance-kit counter.

NOTE Perform this procedure only after a maintenance kit has been installed. Do not use

this procedure to clear the PERFORM PRINTER MAINTENANCE message temporarily.

86 4 Maintenance