Canon GP335 Service Manual page 605

<HV-PRI>
Adjustments by Condition for the Primary Charging Roller High-Voltage Output
Level 3
P-DC Image area primary charging DC component
(0 to 127)
P-NO-DC Sheet-to-sheet primary charging DC
component during feeding (0 to 127)
P-AC Image area primary charging AC component
(0 to 255)
P-NO-AC Sheet-to-sheet primary charging AC
component (0 to 127) during feeding
AGS-GAIN APVC gain (78 to 178)
AGS-OFST APVC offset (78 to 178)
OFST1-DC Primary charging DC offset (98 to 158)
If the image is too light, increase the setting.
If the image is too dark, decrease the setting.
OFST1-AC Primary charging AC offset (98 to 158)
OFST2-AC Primary charging AC offset 2 (98 to 158)
P-AC2 Image area primary charging AC component 2
(0 to 255)
P-AC3 Image area primary charging AC component 3
(0 to 255)
<HV-TR>
Adjusting the Transfer Charging Roller High-Voltage Output
Level 3
TR-N1 Adjusts the transfer roller bias (0 to 10) for
the 1st side of a double-sided print or of a
single-sided print on plain paper.
TR-N2 Adjusts the transfer roller bias (0 to 10) on the
2nd side of a double-sided print on plain
paper.
TR-OFST Adjusts the transfer charging offset (98 to
158).
TR-SPP Adjusts the offset for thick-paper ATVC*
table (0 to 10). Effective for thick paper mode
with pick-up from the multifeeder. A higher
setting increases the effects.
COPYRIGHT © 1999 CANON INC. CANON 405/335 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Description
Description
CHAPTER 14 TROUBLESHOOTING
Remar
Enter the setting recorded on the
service label after replacing the
composite power supply PCB.
Enter the settings recorded on the
service label after replacing the
composite power supply PCB.
Remarks
Unit: µA
Effective for small-size plain
paper; to make it effective for
large-size paper, set '1' to
OPTION>BODY>TRNS-SW.
(if 200 mm or less in main
scanning direction, small-size; if
over 200 mm, large-size)
ADJUST
14-187