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COPYRIGHT
©
1999 CANON INC. CANON imageRUNNER 600 REV.1 JAN. 2000 PRINTED IN U.S.A.
6-17
CHAPTER 6 IMAGE FORMATION SYSTEM
Table 6-301 Primary Charging Levels
2. Changing the Primary Charging Level Setting
If uneven images occur, the primary charging level may be changed in service mode to sup-
press the problem.
Standard mode
Suppression mode 1
Suppression mode 2
0
1
2
+300
+600
400
400
400
Grid bias (V)
600
550
400
Setting
Primary charging current
correction value (µA)
VD target value (v)
A higher output suppresses unevenness.
A lower output suppresses uneven charging
efficiency on the surface of the drum.
COPIER>OPTION>BODY>PR-SEL
(potential unevenness suppression
mode selection)
0: standard mode (default)
1: suppression mode 1
2: suppression mode 2
Related Service Mode