Service manual

AR-M351U/M451U, AR-M355U/M455U ADJUSTMENTS 8 - 10
<Display values 1>
<Set values 2>
∗
With the above + 10, the SPF enters the duplex mode (DD),
making duplex copy.
<Set values 3>
<8> Original off-center 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.)
• OC scan distortion adjustment
• SPF scan distortion adjustment
• OC scan magnification ratio
• SPF scan lead edge adjustment
Items which must be executed after completion of this adjust-
ment.
• Nothing special
1) Set an original on the original table.
2) Execute SIM 50-12.
3) Select the paper feed tray and the magnification ratio.
4) After entering the adjustment value, pres START key, and
printing is started.
5) Check the off-center (distance from the paper lead edge) of
the printed copy. Repeat procedure 2 until the printed copy
satisfies the specifications.
• For the duplex mode (Single → Duplex), add 10 to the above set
value.
• When the print line is shifted toward a from the paper center,
decrease the value.
• When the print line is shifted toward b from the paper center,
increase the value.
<Specifications>
3. Scanner section
A. OC scan distortion adjustment
(MB-B rail height adjustment)
• This adjustment requires a high-level preciseness.
It is easier to perform the scanner unit distortion adjustment pre-
viously described.
Before performing this adjustment, the following adjustment must
have been completed.
• LSU right angle adjustment
1) Make a test chart as shown below. (Print 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) Remove the front cabinet in front of the scanner, and check
that installing position of the MB rail.
5) Loosen the screw at the right of the MB rail to adjust.
<Specifications>
Normal display NOW COPYING
ERROR display Door open DOOR OPEN.
Jam JAM
Paper empty PAPER EMPTY.
1TRAY1
2TRAY2
3TRAY3
4TRAY4
5 Manual feed
Set range 25 - 200%
Adjustment position
Measurem
ent
reference
Specification
Set value
Default Range
Original
off-center
SIM50-12
PLATEN OC mode Copy
output
center line
As shone in
the table
below.
50 0 – 99 Set value
1: 0.1mm
shift
SPF
SIDE1
SPF front
surface
adjustment
SPF
SIDE2
SPF back
surface
adjustment
a
b
Specification ± 1.5mm
Print lead edge
2
SIMULATION 50-12
ORIGINAL OFF-CENTER ADJUSTMENT. SELECT 0-9, AND PRESS
START.
0.TRAY SELECT 1 1.COPY START
2.MAGNIFICATION 100
(ADJUSTMENT DATA)
3.PLATEN 50 4.SPF SIDE1 50 5.SPF SIDE2 50
Machine (OC mode) Single ±1.5mm
Duplex ±1.7mm
Overall (DSPF) Single S - S ±2.8mm
Single D - S ±3.5mm
Duplex S - D ±3.0mm
Duplex D - D ±3.5mm
Measurement
point
Specification Set value
OC scan
distortion
adjustment
Angle θ in the
above figure
θ = 90°±0.13° 1 scale = about
0.25°shift in θ