Adjusting The Vertical Shifting Of The Laser Scanner Unit - Kyocera Mita KM-1530 Service Manual

(4-2) Adjusting the vertical shifting of the laser scanner unit

Perform the following adjustment if the copy image shifts vertically due to vertical shifting of the position of the laser
scanner unit.
Enter maintenance mode.
Enter "993" using the numeric keys.
Press the start key.
• 20 cpm
Select "VTC-PG2" using the
cursor up/down keys
• 15 cpm
Select "2" using the copy
exposure adjustment keys.
Press the interrupt key.
Press the start key and make
a copy at 100% magnification.
Is the image correct?
Press the stop/clear key to
exit maintenance mode.
Vertical shifting:
–1.5 mm
X (mm)*
Position of LSU
right spacer
* "–" indicates that the copy image shifts toward the bottom (copy example 1)
"+" indicates that the copy image shifts toward the top (copy example 2)
Start
No
Yes
End
X < –0.5 mm –0.5 mm
LSU right spacer
LSU right spacer
Top layer 2nd layer from the top
Table 1-6-2
Vertical shifting : X (mm)
Copy
Correct image
example 1
Figure 1-6-40
Rifit the laser scanner unit and
turn the main switch on.
Turn the main switch off and remove the
laser scanner unit (see page 1-6-24).
Change the position of the LSU right spacer
(see table 1-6-2).
X +0.5 mm +0.5 mm < X
2AV/X
Copy
example 2
+1.5 mm
LSU right spacer
3rd layer from the top
1-6-27
1-6