Kyocera DF-420, Service Manual

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3MH
1-3-6
U034
Adjusting the print start timing
Description
Adjusts the leading edge registration, center line or trailing edge margin.
Purpose
Make the adjustment if there is a regular error between the leading edges of the copy image and original.
Make the adjustment if there is a regular error between the center lines of the copy image and original.
Make the adjustment if there is a regular error between the trailing edges of the copy image and original.
Method
1. Press the start key.
2. Select the item using the image mode selection key.
: Off, : On, : Flashing
Adjustment: leading edge registration adjustment
1. Select group 1 using the image mode selection key.
2. Select the item using the exposure adjustment keys.
3. Press the interrupt key.
4. Press the start key to output a test pattern.
5. Change the setting value using the zoom +/- keys.
For output example 1, decrease the value. For output example 2, increase the value.
Figure 1-3-1
Maintenance
item No.
Description
Image mode LEDs
(group No.)
Description
1 Leading edge registration adjustment
2 Center line adjustment
3 Trailing edge margin adjustment
4 Leading edge registration adjustment for printer
Exposure
indicator Description Setting
range Initial
setting Change in
value per step
Exp. 1 (lit) Paper feed from cassette -5.0 to 10.0 2.8 0.1 mm
Exp. 2 (lit) Paper feed from MP tray -5.0 to 10.0 0.0 0.1 mm
Exp. 3 (lit) Paper feed from first paper feeder -5.0 to 10.0 0.0 0.1 mm
Exp. 4 (lit) Paper feed from second paper
feeder -5.0 to 10.0 0.0 0.1 mm
Exp. 5 (lit) Paper feed from third paper
feeder -5.0 to 10.0 0.0 0.1 mm
Exp. 1 (flashing) Duplex mode -5.0 to 10.0 0.8 0.1 mm
Correct image Output
example 1
Output
example 2
Leading edge registration (20 ± 1.0 mm)