Adf Scanning Position Adjustment (Top-End Registration) - Oki MC860 Maintenance Manual

Oki Data CONFIDENTIAL

5.15.1.6 ADF scanning position adjustment (top-end registration)

Adjust the top-end scanning position (vertical scanning direction).
Reference value Default value
Front ± 1.8 (mm) +11 (0.6809mm)
Back
± 2.3 (mm) +11 (0.6809mm)
Measurement
1) Set the A3 document on ADF.
2) Scan both sides of the test chart with ADF at 300 dpi. (Such as Scan To USB
Memory)
3) Measure length of the "A" portion as shown in the drawing. If it does not satisfy the
reference value, perform adjustment as described below.
4) If length of "A" portion stays within the reference value, it is the end of measurement.
43967002TH Rev.1
Adjustable range Unit of adjustment
-127 +127
0.0619mm / step
(–7.86 7.86mm)
-127 +127
0.0619mm / step
(–7.86 7.86mm)
Adjustment
1) Set the ADF top-end registration.
• If the measurement data is short:
=> Adjust the setting value in the negative (-) direction.
• If the measurement data is long. (When document is scanned from the front of
document (when shade is present in the top-end.))
=> Adjust the setting value in the positive (+) direction.
When a value is added in the negative (-) direction, the scan image on a PC moves down.
(Because the scanning start position is moved up.)
When a value is added in the positive (+) direction, the scan image on a PC moves up.
(Because the scanning start position is moved down.)
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