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ADJ 5.3 DADF Original Detection Correction (Size
Detection Auto-Correction)
Parts List on
PL 51.1
Purpose
To automatically adjust the original size during DADF scan to the desired original size.
Proceed with this adjustment only after the following operations/events.
•
The DADF Assembly is replaced.
•
An abnormality is detected after replacing the Reg. Roll, Feed Roll and Retard Roll.
•
A size detection error occurs.
Overview
Using the DADF, continuously scan 3 originals. The NVM Data is automatically corrected
based on the comparison between the Slow Scan Length and the reference value detected by
the DADF. The NVM Data that is corrected is "Size Correction Value for Slow Scan Originals in
Non CVT Mode" (Chain Link No. 710-552).
Scanned originals differ according to the market as follows:
FX, XE/AP: A4 LEF (Slow scan length accuracy (210.0mm +/- 0.7mm))
XC: 8.5"x11" LEF (Slow scan length accuracy (215.9mm +/- 0.7mm))
Adjustment
1.
Enter UI Diagnostics "ADF Independent Operation (Size Detection Auto Adjust)".
2.
Set 3 documents to be transported in the DADF.
* The size of the fed original differs according to the market.
FX, XE/AP: A4 LEF (Slow scan length accuracy (210.0mm +/- 0.7mm))
XC: 8.5"x11" LEF (Slow scan length accuracy (215.9mm +/- 0.7mm))
3.
When the [Start] button is pressed, the DADF starts pulling in the document and the cor-
rection value is calculated. At this point, the message "In progress" appears.
4.
The applicable NVM Data will then be updated. After the operation, the UI screen will be
displayed.
However, if this operation results in an NG, the NVM will not be updated and a message
indicating that an NG has occurred will be displayed.
5.
The operation ends when the [Stop] button is pressed.
Status Confirmation Specifications
You may check the following status by using NVM Read after operations.
Table 1 DADF Size Detection
Chain-
Link
Display Data Name
Reference
711-164 Size Correction Value for
Setting Range=144 to 256
(equivalent to +/-56 increments [+/-10mm] <−
Slow Scan Originals in Non
CVT Mode
0.18mm/increment)
Initial Value: 200 (However, there is an adjusted
value set against the initial value when shipped.)
Initial Issue
WorkCentre 5335 Family Service Documentation
(Table
1)
BUS Updated 12/2011
<Image Quality Restrictions>
•
This operation cannot be terminated (or aborted) halfway through the process and has to
be completed from start to finish regardless of any abnormalities that occur.
•
In cases where more than 4 originals are loaded in the DADF, this operation will not feed
the originals that are fed after the fourth sheet.
NOTE: If the problem still exists after the adjustment, repeat the procedure.
07/2011
4-193
Repairs & Adjustments
ADJ 5.3
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