Automatic Document Feeder Sub-Scanning Zoom Ratio Adjustment - NEC NEFAX 671 Service Manual

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Automatic Document Feeder Sub-Scanning Zoom Ratio Adjustment

<Reference>
• Adjust the length of C in the copy of the test pat-
tern so that the following specification is met.
C
1382D009AA
Zoom Ratio Specification Mode Function Setting Range
Full Size 95 to 105
200 ± 0.5 mm "ADJUST" menu ADF SUB ZOOM
(100%) 1 increment = 0.4%
<Adjustment Procedure>
1. Print the test pattern.
2. Enter the "ADJUST" menu in the Service mode.
3. Load the test pattern into the Automatic Document Feeder and make a test copy.
NOTE
• The test pattern should be positioned vertically.
• Use A4 L or Letter L paper loaded into Tray 1 to make the test copy.
4. If the length of C in the copy of the test pattern is not the same as the length of C in the
test pattern, adjust it according to the following procedure.
5. Change the setting.
If the width of C in the test pattern is longer than the specified width . . . . .
Decrease the setting.
If the width of C in the test pattern is shorter than the specified width . . . . .
Increase the setting.
✽ If the shift cannot be adjusted to within the specification with a single adjustment, perform
the adjustment again to change the setting.
6. Press the Yes key to apply the setting.
NOTE
If the Stop key is pressed, instead of the Yes key, the main screen is displayed and the set-
ting returns to that before it was changed.
Load the test pattern into the Automatic Document Feeder again, make another test copy,
and check it.
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