Service manual for hp laserjet 4050

Laserjet - HP 4000/4050 Printer Parts - Feedroller

Simultaneously hold down the minus side of the Item key, and the minus side of the Value key. This is due to many different formatter board revisions.

HP LaserJet 4000, LaserJet 4050 Service Repair Manual Download.

NOTE: Some version of the Laser Jet 4000 will not have their maintenance count reset by following the preceding "short cut" method.

LJ4100 UG - iphys

HP LaserJet 4000 Maintenance Kit Instructions - Precision Roller

While this is a good recommendation, the time to install a new maintenance kit will vary depending on printing conditions.

HP LaserJet 40 N Printers Getting Started Guide

Wait for RESET MAINTENANCE COUNT to be displayed and then release both keys.

Service manual for hp laserjet 4050:

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