Canon ImageRunner iR8500 Series Service Manual page 674

Chapter 14
4+1.5mm,-1.0mm
1) Adjust the image position in main scanning direction as follows:
Check to make sure that the following setting is as indicated on the
service label: COPIER>ADJUST>LASER>PVE-OFST. If not, enter
the setting recorded on the service label.
The setting is used so that the image on the photosensitive drum will be
centered.
Changing the setting can deform the edges of images.
2) Check to make sure the setting of the following is '106':
COPIER>ADJUST>BLANK>BLANK-T. If not, enter '106'.
3) Adjust the image leading edge margin as follows:
Generate output by making
COPIER>TEST>PG5; then, check the image leading edge margin.
Standard: 4 +1.5, -1.0 mm
Mode: COPIER>ADJUST>FEED-ADJ>REGIST
- A higher setting increases the margin.
- A lower setting decreases the margin.
4+1.5mm,-1.0mm
4) Adjust the image trailing edge margin as follows:
Generate output by making
COPIER>TEST>PG5; then, check the image trailing edge margin.
Standard: 2.5 ±1.5 mm
Mode: COPIER>ADJUST>BLANK>BLANK-B
- A higher setting increases the margin.
- A lower setting decreases the margin.
5) Adjust the image front margin for each source of paper as follows:
Select '1' (right deck) by making the following selections:
COPIER>TEST>PG-PICK. Then, generate output by making the
following selections to
14-20
+
2.5mm 1.5mm
+
2.5mm 1.5mm
F-14-26
the following selections:
F-14-27
the following selections:
+
2.5mm 1.5mm
F-14-28
adjust the image front
COPIER>TEST>PG65.
Likewise, select '2', '3', and '4' by making the following selections:
COPIER>TEST>PG-PICK. Then, generate output by making the
following
COPIER>TEST>PG5.
Standard: 2.5 ±1.5 mm
PG-PICK 1: right deck
PG-PICK 2: left deck
PG-PICK 3: cassette 3
PG-PICK 4: cassette 4
adjustment: by adjusting the fixed position of each source of paper.
- Front Deck (left/right)
1) Slide out the deck, and loosen the four screws [2] and the two fixing
screws [3] of the cassette front cover [1].
2) Move the cassette guide assembly (front) [4] to the front or the rear,
and make adjustments.
- Cassette (3/4)
1) Slide out the cassette, and remove the two screws [2] of the cassette
front cover [1].
margin:
selections, and adjust the
2.5mm 1.5mm
F-14-29
[2]
[3]
[2]
F-14-30
[4]
F-14-31
image front margin:
+
[3]
[2]
[1]