Scanner Section - Sharp MX-M350 Service Manual

<Display values 1>
Normal display
ERROR display Door open
Jam
Paper empty
<Set values 2>
1 TRAY1
2 TRAY2
3 TRAY3
4 TRAY4
5 Manual feed
∗
With the above + 10, the SPF enters the duplex mode (DD),
making duplex copy.
<Set values 3>
Set range 25 - 200%
<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.
a
Print lead edge
b
Specification ± 1.5mm
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
Measurem
Adjustment position ent
reference
Original PLATEN OC mode Copy
off-center SPF SPF front output
SIM50-12 SIDE1 surface center line
adjustment
SPF SPF back
SIDE2 surface
adjustment
NOW COPYING
DOOR OPEN.
JAM
PAPER EMPTY.
2
50 5.SPF SIDE2 50
Set value
Specification
Default Range
As shone in 50 0 – 99 Set value
the table 1: 0.1mm
below. shift
MX-M350/M450 N/U ADJUSTMENTS 8 - 10
• 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>
Machine (OC mode) Single
Duplex
Overall (DSPF) Single S - S
Single D - S
Duplex S - D
Duplex D - D

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>
Measurement
Specification
point
Angle θ in the
OC scan
distortion above figure
adjustment
±1.5mm
±1.7mm
±2.8mm
±3.5mm
±3.0mm
±3.5mm
Set value
θ = 90°±0.13° 1 scale = about
0.25°shift in θ