MX-C250 ADJUSTMENTS 5 – 23
To execute this adjustment, it is required that the ADJ 17A Scan
image off-center adjustment (Document table mode) must have
been properly adjusted.
1)
Prepare the adjustment chart.
Draw a line at the center of the front surface and the back sur-
face of A4 (11" x 8.5") paper in parallel with the paper transport
direction.
2)
Set the adjustment chart to the RSPF.
3)
Make a duplex copy in the normal magnification ratio from the
manual paper feed tray, and check the image position on the
front surface and the back surface of the copy paper.
If the difference is within the range of 0 +/- 2.7mmm there is no
need to perform the adjustment.
If the adjustment is required, perform the following procedures.
4)
Enter the SIM 50-12 mode.
SIM50-12
A - C: When the adjustment value is increased, the image
position is shifted to the rear frame side.
1step = 0.1mm
SPF
* Item A, B: When the adjustment value is increased, the scan
timing is delayed.
* Item C - H: When the adjustment value is increased, the
image loss is increased.
* Item A - H: 1 step = 0.1mm change
* The SPF rear edge image loss setting is provided for
countermeasures against the case when shades are
produced.
5)
Enter an adjustment value with 10-key, and press [OK] key.
(Change for change in the adjustment value: 0.1mm/step)
(When the adjustment value is increased, the print image is
shifted to the rear.)
Repeat the procedures of 2) - 6) until a satisfactory result is
obtained.
ADJ 8
Copy image position and image
loss adjustment
(Manual adjustment)
Only when the manual adjustment is required, execute this adjust-
ment.
8-A
Copy image position, image loss, and void
area adjustment (Manual adjustment)
(Document table mode)
This adjustment must be performed in the following cases:
* When the scanner (reading) section is disassembled.
* When the scanner (reading) unit is replaced.
* When the LSU is replaced or removed.
* When the registration roller section is disassembled.
* U2 trouble has occurred.
* The MFP PWB has been replaced.
* When the EEPROM on the MFP PWB is replaced.
Before executing this adjustment, be sure to confirm that the ADJ
4/ADJ 5 Print engine image skew, image position, image magnifica-
tion ratio, void area adjustments has been completed normally.
1)
Place a scale on the document table as shown in the figure
below.
Place a scale so that it is in parallel with the scanning direction
and that its lead edge is in contact with the document guide
plate.
Place white paper on the document table so that the scale lead
edge can be seen.
Item
Display
Content
Set-
ting
range
Default
value
1
OC
Document table image off-
center adjustment
1 - 99
50
2
SPF(FRONT
)
SPF front surface image off-
center adjustment
1 - 99
50
3
SPF(REAR)
SPF back surface image off-
center adjustment
1 - 99
50
Paper transport direction
Front surface
Back surface
Draw a line at the center of the
front surface and the back surface
of paper in parallel with the paper
transport direction.
original
copy
a
b
Sim50-12 ORG. OFFSET
1
䠖
OC
50
㻌
2
䠖
SPF(SIDE1)
[ 1- 99]
㻌 㻌
50
50
Item/Display
Content
Setting
range
Default
value
1
SIDE1
Front surface docu-
ment scan position
adjustment (CIS)
1 - 99
50
2
Image
loss
amount
setting
SIDE1
LEAD_EDGE
(SIDE1)
Front surface lead
edge image loss
amount setting
0 - 99
20
3
FRONT_REAR
(SIDE1)
Front surface side
image loss amount
setting
0 - 99
20
4
TRAIL_EDGE
(SIDE1)
Front surface rear
edge image loss
amount setting
0 - 99
30
