Adjusting Scanner Image Lateral Squareness (Reference); Adjusting The Position Of The Laser Scanner Unit - Kyocera TASKalfa 620 Service Manual

2KN/2KP-1

(6) Adjusting scanner image lateral squareness (reference)

Perform the following adjustment if the copy image is laterally skewed (lateral squareness not obtained).
Caution:
Perform (6-1) Adjusting the position of the laser scanner unit first and check for lateral squareness of the copy image. If
squareness is not obtained, perform (6-2) Adjusting the position of ISU (see page 1-5-43).

(6-1)Adjusting the position of the laser scanner unit

Procedure
Start
Enter maintenance mode.
Enter 089 using the numeric keys.
Press the start key.
Select 1 dot-LINE.
Press the interrupt key.
Press the start key and make
a copy at 100% magnification.
Is the image correct?
Yes
Press the stop/clear key.
Exit maintenance mode.
End
1-5-42
Retighten the screw.
Retighten four screws to hold the LSU.
Refit the LSU adjustment plate and contact glass.
Remove the contact glass (see page 1-5-28).
Loosen four screws holding the LSU (see page 1-5-37).
Remove the screw and then remove the LSU adjustment cover.
Loosen the screw and adjust the position of the LSU adjusting plate and
the position for fixing screw A, B as follows.
For output example 1
1. Move the LSU adjustment plate in the direction of the black arrow (
2. In case adjustment is required even if the position of the LSU adjusting
No
plate is at the most left position and also adjusting screw A is tightened in
the hole of + marking, tighten adjustming screw A in the hole of - and then
tighten screw B.
3. Move the LSU adjusting plate at the most right position and again move
it in the direction of the black arrow (
For output example 2
1. Move the LSU adjusting plate in the direction of the white arrow (
2. In case adjustment is required even if the position of the LSU adjusting
plate is at the most right position and also adjusting screw A is tightened in
the hole of - marking, tighten adjusting screw A in the hole of + and then
tighten screw B.
3. Move the LSU adjusting plate at the most left position and again move it in
the direction of the white arrow (
LSU adjusting cover
Figure 1-5-88
Output
Correct
example 1
Figure 1-5-87
).
).
Adjusting pin
LSU adjusting
plate
plate
Screw
Output
example 2
).
).
Adjusting screw A
Fixed screw B