Canon C2050 Service Handbook page 14

CHAPTER 1 MAINTENANCE AND INSPECTION
3 Scheduled Servicing
1. As a rule, perform scheduled servicing every 50,000 prints.
2. Check the Service Book before leaving for scheduled servicing, and take
parts for expected replacement.
1) Report to the person in charge, and check the general condition.
2) Record the counter reading, and check the faulty copies.
3) Make test prints in Direct, Reduce, and Enlarge; then, check the following:
a. Images
b. Background for soiling
c. Leading edge margin
d. Left margin
e. Fixing, registration, and back for soiling
f. Abnormal noise
4) Perform scheduled servicing according to the number of prints made (Scheduled Servic-
ing Chart of this chapter and in Chapter 11 of the Printer Manual).
5) Clean any soiled areas inside the machine.
6) Make test prints.
7) Execute auto gradation correction in user mode.
8) Make sample copies.
1-2R
(2.5 ± 1.5 as standard in Direct)
(2.0 ± 1.5 mm as standard in Direct)