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

2AV/X

(4) Adjusting the skew and vertical shifting of the laser scanner unit

(4-1) Adjusting the skew of the laser scanner unit

Perform the following adjustment if the leading and trailing edges of the copy image are laterally skewed (lateral
squareness not obtained).
Caution:
• After adjusting the skew of the laser scanner unit, make a test copy and check the copy image. If lateral squareness is
still not obtained, perform "(6) Adjusting the position of the ISU" (see page 1-6-30).
Procedure
Enter maintenance mode.
Enter "993" using the numeric keys.
• 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.
1-6
Press the start key and make
a copy at 100% magnification.
Is the image correct?
Press the stop/clear key to
exit maintenance mode.
Skew: X (mm)*
LSU front spacer
insertion direction
* "–" indicates that the beginning of the printing is higher than the ending (copy example 1)
"+" indicates that the beginning of the printing is lower than the ending (copy example 2)
1-6-26
Start
Press the start key.
No
Yes
End
–8 mm X < –3 mm
LSU front spacer
No marking (2nd from the bottom)
Correct image
Refit 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 insertion direction of the LSU
front spacer (see table 1-6-1).
–3 mm X +3 mm
LSU front spacer
O (3rd from the bottom)
Table 1-6-1
Skew : X (mm)
Copy Copy
example 1 example 2
Figure 1-6-39
+3 mm < X +8
LSU front spacer
X (4th from the bottom)