05/2014
4-109
DC SC2020
Disassembly/Assembly and Adjustment
56. DADF
Version 1.1
4. Enter the value to perform correction for each size in the
NVM [715-057 to 073].
ADJ 56.1.3 DADF Lead Edge Registration
Purpose
To adjust the original to the proper position (original feed direction)
on the Platen.
NOTE: The following adjustments must be made before carrying out
checking and adjustment.
• IOT Lead Edge/Side Edge Registration (ADJ 18.1.1)
• IIT Lead Registration (ADJ 1.3.1)
• DADF Lead-Skew Adjustment (ADJ 56.1.1)
NOTE: If there is a black line at the Tail Edge for non-standard sizes
after Regi adjustment of the Lead Edge for Side 1 and Side 2, adjust
the Tail Edge using the NVM [711-142] (Side 1) and NVM [711-143]
(Side 2).
[1 Sided mode]
Check
1. Place the Test Chart (499T283) such that there is no gap
between the chart and the DADF Guide.
2. Make a copy using the following settings in Copy mode.
• Color Mode: "Black"
• Paper Tray: "A3"
• Reduce/Enlarge: "100%"
• No. of Copies: "2"
• 1 to 1 Sided mode
3. Check that the distance between the Lead Edge and the refer-
ence value in the second copy is 10 +/-1.5 mm.
If it is not within the specified range, adjust to the specified
range using the following procedure. (Figure 1)
Figure 1 j0sr42053
Adjustment
1. Input the NVM [711-140].
2. If the specified value is
• 11.5 mm or higher, increase the NVM value.
• 8.5 mm or lower, decrease the NVM value.
(an increment of 1 in NVM = 0.1 mm)
3. Repeat the procedure until the value is within the specified
range (10 +/-1.5 mm).
As there will be differences in the Regi according to the ratio,
adjust the following NVM.
[2 Sided Mode]
Check
1. Place the Test Chart (499T283) on the DADF with Side 1 fac-
ing down with the Test Chart fed from the tail edge.
2. Make a copy in the following mode:
• Color Mode: "Black"
• Paper Tray: "A3"
• Reduce/Enlarge: "100%"
• No. of Copies: "2"
4 715-061 203.2mm 8x10" SEF, 8x10.5" SEF
5 715-063 210mm A4 SEF, A5 LEF
6 715-065 214.9~215.
9mm
Letter SEF, Legal SEF, 5.5x8.5" LEF,
8.46x12.4" SEF, 8.5x13" SEF
7 715-067 254~257m
m
B4 SEF, B5 LEF, 8x10" LEF
8 715-069 266.7~267
mm
16K LEF, 8K LEF, 8x10.5" LEF
9 715-071 279.4mm Letter LEF, 11x15" SEF, 11x17" SEF
1
0
715-073 297mm A4 LEF, A3 SEF
Table 2 Side 2 of 2 Sided mode
NVM
Document
Width Document Size
Table 1
NVM
Basic Scan Speed
[mm/s] Reduce / Enlarge
NVM [711-002] 165.0 100.0%
NVM [711-004] 82.5 Other than 100.0%
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