Canon iR6000 Service Handbook

CHAPTER 2 STANDARDS AND ADJUSTMENTS
2-48
8.3 Zero Level Check
A "zero level check" is a check made to find out whether the control system of the DC
controller PCB identifies 0 V when the drum surface potential is 0 V.
A zero level check may be made in either of two ways, so as to find out whether a circuit
on the the DC controller PCB or the potential measurement circuit is normal:
1) Method 1: for checking the level shift circuit of the DC controller PCB
2) Method 2: for checking the potential measurement circuit
8.3.1 Method 1
1) Turn off the main power switch.
2) Remove the rear upper cover.
3) Short CP106 [1] and CP105 [2] on the DC controller PCB using a cable whose both
ends are equipped with an alligator clip or a probe.
When shorting CP106 and CP105, be sure to keep the shorting tool away
from other elements or the pattern on the PCB.
F02-803-01
J110J113J111
J125
J109
J107 J112 J104
J105
J115
J102
J101
J119
J106
J118
J103
J124
J108
J114
J302
J120
J116
J117
J121
J123
J126
J303
J203
J100
J201
CP104
CP103
CP101
CP105
CP106
CP111
CP110
CP108
CP109
CP107
[2]
[1]

Canon iR6000 Specifications

General

Print Technology	Laser
Copy Resolution	600 x 600 dpi
Scan Resolution	600 x 600 dpi
Functions	Print, Copy, Scan
Print Speed	60 ppm
Duplex Printing	Yes
Network Connectivity	Ethernet
Paper Sizes	A3, A4, B4, B5
Warm-Up Time	30 seconds
Multiple Copies	Up to 999
Magnification	25-400%
Copy Speed	60 ppm (A4)