Service manual

CHAPTER 7 SOFTWARE SERVICE SUPPORT
7-6
<How to calculate drum unit life>
**Printing time for 1 page/job in discontinuous printing = 12 seconds
(Page counter reduced by the number of drum rotations) = (Time of motor rotation) ÷ (12 sec.)
Example:
Cold start (Idling for 5 sec.) Hot start Page
counter
1 page/job (5 + 8.4) / 8.4 = 1.60 8.4 / 8.4 = 1 1
2 pages/job (5 + 8.4 + 3.6) / 8.4 = 2.02 (8.4 + 3.6) / 8.4 = 1.43 2
16 pages/job (5 + 8.4 + 3.6 x 15) / 8.4 = 8.02 (8.4 + 3.6 x 15) / 8.4 = 7.43 16
If printing 1 page per job with cold start, the drum unit life is decreased earlier.
<Drum Life Reset Function>
This function is used by the user when changing the new drum unit to clear the drum life
counter.
To reset the drum counter, make sure that the front cover is open, press and hold down the
Go button until all four LEDs are lit. Once all four LEDs are lit, release the Go button and then
close the front cover. Make sure that the Drum LED is off.