EXP Computer C4077-90960 - Manual (Page 81)

Preventative Maintenance
The user-conducted preventive maintenance cycle for this printer is every
350,000 images. The part numbers for the preventive maintenance kits are
C3971A for the 100V printers, and C3972A for the 220V printers. The kits
contain the following replacement parts: one Fusing Assembly, one Transfer
Roller Assembly, and six Feed/Separation Rollers (two each for Trays 2, 3, and 4).
Refer to Chapter 6 of this manual, and the instructions included in the kits for
detailed replacement procedures.
The control panel message, PERFORM USER MAINTENANCE, indicates that the 350,000
maintenance is due. Upon completion of the maintenance procedures, go to the
control panel Configuration Menu and set the SERVICE MESSAGE= to OFF.
N o t e LaserJet 5Si HM (C3124A) has a 250,000 image user preventive
maintenance interval due to heavy media usage.
4-6 Maintenance and Adjustments