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2KN/2KP
2-4-12
When maintenance item U092 (Adjusting the scanner automatically) is run using the specified original (P/N 2AC68241),
the following adjustments are automatically made:
Adjusting the scanner center line (U067)
Adjusting the scanner magnification in the main scanning direction (U065)
Adjusting the scanner leading edge registration (U066)
Adjusting the scanner magnification in the auxiliary scanning direction (U065)
When maintenance item U076 (Executing DP automatic adjustment) is run using the specified original (P/N 2AC68241),
the following adjustments are automatically made:
Adjusting the DP magnification (U070)
Adjusting the DP scanning timing (U071)
Adjusting the DP center line (U072)
11
Adjusting magnification of the scanner
in the main scanning direction (scan-
ning adjustment)
Data processing
U065
U070
MAIN SCAN ADJ
CIS MAIN ADJ
Test chart
P.1-3-25
U065: For copying an original placed on the contact glass.
U070: For copying originals from the document processor (to make
an adjustment for CIS).
12
Adjusting magnification of the scanner
in the auxiliary scanning direction
(scanning adjustment)
Original scanning speed
U065
U070
SUB SCAN ADJ
CONVEY SPEED
Test chart
P.1-3-25
P.1-3-29
U065: For copying an original placed on the contact glass.
U070: For copying originals from the document processor.
To make an adjustment for CIS, select CIS SUB ADJ.
13
Adjusting the center line (scanning
adjustment)
Adjusting the original scan data (image
adjustment)
U067
U072
ADJUST DATA
ADJUST DATA
Test chart
P.1-3-27
P.1-3-31
U067: For copying an original placed on the contact glass.
U072: For copying originals from the document processor.
To make an adjustment for CIS, select ADJUST DATA2.
To make an adjustment for rotate copying, select ADJUST DATA3.
14
Adjusting the leading edge registration
(scanning adjustment)
Original scan start timing
U066
U071
ADJUST DATA
ADJUST DATA1
Test chart
P.1-3-26
P.1-3-30
U066: For copying an original placed on the contact glass.
U071: For copying originals from the document processor.
To make an adjustment for CIS, select ADJUST DATA3.
To make an adjustment for rotate copying, select ADJUST DATA5.
15
Adjusting the leading edge margin
(scanning adjustment)
Adjusting the original scan data (image
adjustment)
U403
U404
B MARGIN
B MARGIN
Test chart
P.1-3-80
P.1-3-81
U403: For copying an original placed on the contact glass.
U404: For copying originals from the document processor.
To make an adjustment for CIS, select B MARGIN (BACK).
16
Adjusting the trailing edge margin
(scanning adjustment)
Adjusting the original scan data (image
adjustment)
U403
U404
D MARGIN
D MARGIN
Test chart
P.1-3-80
P.1-3-81
U403: For copying an original placed on the contact glass.
U404: For copying originals from the document processor.
To make an adjustment for CIS, select D MARGIN (BACK).
17
Adjusting the left and right margins
(scanning adjustment)
Adjusting the original scan data (image
adjustment)
U403
U404
A MARGIN/
C MARGIN
A MARGIN/
C MARGIN
Test chart
P.1-3-80
P.1-3-81
U403: For copying an original placed on the contact glass.
U404: For copying originals from the document processor.
To make an adjustment for CIS, select A MARGIN (BACK)/C MAR-
GIN (BACK).
Adjusting
order
Item
Image
Description
Maintenance mode
Original
Page
Remarks
Item No.
Mode
Image quality
Item
Specifications
100% magnification
Enlargement/reduction
Lateral squareness
Margins
Leading edge registration
Curling
Machine: ± 0.8 %
Using DP: ± 1.5 %
Machine: ± 1.0 %
Using DP: ± 1.5 %
Machine: ±1.5 mm/375 mm
Using DP: ±2.5 mm/375 mm
A: 3.0 ± 2.0 mm
B: 3.0 ± 2.5 mm
C: 3.0 ± 2.0 mm
D: 3.0 ± 2.5mm
Cassette: ± 2.5 mm
MP tray: ± 2.5 mm
Duplex mode: ± 2.5 mm
Using DP: ± 3.0 mm
Simplex mode: 10.0 mm or less
Duplex mode: 10.0 mm or less
Item
Specifications
Skewed paper feed
(left-right difference)
Lateral image shifting
Cassette: 1.5 mm or less
MP tray: 1.5 mm or less
Duplex mode: 2.0 mm or less
Using DP:
Simplex-Simplex: 2.0 mm or less
Simplex-Duplex: 2.5 mm or less
Duplex-Simplex: 2.5 mm or less
Duplex-Duplex: 3.0 mm or less
Cassette: 2.0 mm or less
MP tray: 2.0 mm or less
Duplex mode: 3.0 mm or less
Using DP:
Simplex-Simplex: 2.5 mm or less
Simplex-Duplex: 3.5 mm or less
Duplex-Simplex: 3.0 mm or less
Duplex-Duplex: 3.5 mm or less
Summary of Contents for TASKalfa 620
Page 1: ...SERVICE MANUAL Published in August 2009 842KP112 2KPSM062 Rev 2 TASKalfa 620 820 ...
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Page 10: ...This page is intentionally left blank ...
Page 144: ...2KN 2KP 1 3 106 This page is intentionally left blank ...
Page 308: ...2KN 2KP 1 5 88 This page is intentionally left blank ...
Page 412: ...2KN 2KP 2 3 60 This page is intentionally left blank ...
Page 435: ...1 1 INSTALLATION GUIDE INSTALLATION GUIDE FOR SIDE FEEDER ...
Page 442: ...INSTALLATION GUIDE FOR LARGE SIZE SIDE FEEDER ...
Page 460: ...INSTALLATION GUIDE FOR DOCUMENT FINISHER ...
Page 475: ...INSTALLATION GUIDE FOR CENTERFOLD UNIT ...
Page 490: ...INSTALLATION GUIDE FOR MULTI JOB TRAY ...
Page 501: ...INSTALLATION GUIDE FOR PUNCH UNIT ...
Page 512: ...INSTALLATION GUIDE FOR STOPPER GUIDE ...
Page 515: ...INSTALLATION GUIDE FOR PRINTING SYSTEM ...
Page 518: ...INSTALLATION GUIDE FOR SCAN SYSTEM ...
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