Service manual

AR-M351U/M451U, AR-M355U/M455U ADJUSTMENTS 8 - 6
<Specification>
B. Adjustment on the scanner side
<1> OC scan distortion adjustment
Items which must have been completed before this adjust-
ment.
• Adjustment on the engine side (If there is no problem in self
print, no need to adjust.)
Items which must be executed after completion of this adjust-
ment.
• OC scan off-center
• OC scan lead edge adjustment
1) Make a test chart as shown below. (Make a self-print pattern
71.)
2) Make a copy from the table glass, and check it.
At that time, set the test chart correctly. If it is set in a distorted
position, the adjustment cannot be made correctly.
3) If the output value is not in the specified range, perform the fol-
lowing adjustment.
4) Adjust the distortion.
Use a level gauge to check that the scanner is installed hori-
zontally.
Make a copy and check it. If there is any distortion as shown in
Fig. 1 or Fig. 2, loosen the scanner fixing screw (M4 x 8) and
the cam A fixing screw (M3 x 12) and adjust.
• In the case of Fig. 1
Shift cam A in the direction A by the difference in the copy image.
For one scale (one groove), shift by 0.5mm.
After shifting, tighten the fixing screw (M3 x 12) of cam A and
make a copy again, and check the copy again to insure that there
is no distortion.
• In the case of Fig. 2
Shift cam A in the direction B by the difference in the copy image.
For one scale (one groove), shift by 0.5mm.
After shifting, tighten the fixing screw (M3 x 12) of cam A and
make a copy again, and check the copy again to insure that there
is no distortion.
After adjustment, tighten the fixing screw (M3 x 12) and the scan-
ner fixing screw (M4 x 8).
∗ If the above adjustment does not fix the problem, perform the
MB rail adjustment.
∗ After the OC distortion adjustment, perform SIM53-8 SPF scan-
ning position automatic adjustment.
<2> SPF height adjustment
Items which must have been completed before this adjust-
ment.
• Nothing special
Items which must be executed after completion of this adjust-
ment.
• Nothing special
1) Close the (D)SPF.
2) Check to confirm that the dove and the reference plate in the
figure below are in contact with the table glass (point a) and
the side guide (point b). (Place copy paper under the dove and
pull it out.) If they are not in contact, adjust with the set screw.
Set position Specification
Set
value
Lead edge void
adjustment
“LEAD EDGE
VOID (DENA)”
Output pattern
“71” print void
quantity A
A = 4.0mm or
less
(A and B total:
8.0mm or less)
Shift of
0.1mm
for set
value 1.
Rear edge void
adjustment
“TAIL EDGE VOID
(DENB)”
Output pattern
“71” print void
quantity B
B = 4.0mm or
less
(A and B total:
8.0mm or less)
Side edge void
adjustment
“FRONT/REAR”
Output pattern
“71” print void
quantity C + D
C and D total:
8.0mm or less
2
SIMULATION 50-1
LEAD EDGE ADJUSTMENT. SELECT 0-9, AND PRESS START.
0.TRAY SELECT 1 1.COPY START
2.MAGNIFICATION 100
(ADJUSTMENT DATA) 3.RRCA 50 4.RRCB 50 10.SIDE2 ADJ. 50
(IMAGE LOSS SETTING) 5.LEAD 15 6.SIDE 20
(VOID SETTING) 7.LEAD_EDGE(DENA) 50
8.TRAIL_EDGE(DENB)30 9.FRONT/REAR 30
Print
lead edge
Fixing screw
(M4 x 8)
A
B
[Fig. 1] [Fig. 2]
First copy image First copy image
Image Image
Paper Paper
Difference Difference