Sharp MX-4140N / MX-4141N / MX-5140N / MX-5141N (serv.man7) Service Manual ▷ View online
MX-5141N ADJUSTMENTS AND SETTINGS 5 – 26
Is there a
resistance in the
section B?
Yes
No
Increase the
clearance in
the section F
until there is a
resistance in
the section B.
However, the
max. is 5.0mm.
c) Adjust the section F.
*
If not, turn the section E to adjust.
Use a clearance gauge to check to confirm that the clearance
in the section F is 4.3mm - 5.0mm.
Turn section E clockwise to lift the RSPF unit. Turn it
counterclockwise to move down the RSPF unit.
* Insert a clearance gauge in the range of 20mm from the
edge (a) of the right lower cover of the base.
Adjust the
section F so that
the clearance is
4.3mm - 5.0mm.
20mm
a
F 4.3 - 5.0mm
E
MX-5141N ADJUSTMENTS AND SETTINGS 5 – 27
Yes
Yes
No
No
End of the
adjustment
The bosses in section A
and B are excessively
pressed. (The right
side is separating.)
Adjust hinge
E until the
separation in
section C is
deleted.
(Counter-
clockwise)
Is
there a re-
sistance?
Is there
a separating
section.
Check section C.
e) If it can be pulled out without resistance, turn the hinge in
section E clockwise to adjust.
f) Check section C.
*
d) Check section B.
*
Check to insure that a slight resistance is felt when pulling out
the RSPF height adjustment sheet. (If the boss in section B is
in contact, it is O.K.)
Slowly pull out the RSPF height adjustment sheet.
Place the RSPF height adjustment sheet between section B
and the SPF glass height adjustment resin surface (a), and
close the RSPF unit.
Be careful not to put the book sensor (b) on the height
adjustment sheet.
Check section B.
a
B
b
E
b
C
b
C
MX-5141N ADJUSTMENTS AND SETTINGS 5 – 28
7-B
RSPF skew adjustment
(Front surface mode)
(Front surface mode)
This adjustment must be performed in the following cases:
* The RSPF section has been disassembled.
* When replacing the RSPF unit.
* The RSPF unit generates skewed scanned images.
1)
Create an adjustment chart by printing in duplex mode the self-
print pattern (grid pattern) specified in Simulation 64-2.
print pattern (grid pattern) specified in Simulation 64-2.
SIM 64-2 set values
A = 1,
B = 1,
C = 254,
D = 255
Make sure that the print grid pattern is almost in parallel with
the paper edges, and apply position marks 'A', 'B', 'C' and 'D' to
the leading and trailing edges of the paper for both front and
back sides of the paper.
the paper edges, and apply position marks 'A', 'B', 'C' and 'D' to
the leading and trailing edges of the paper for both front and
back sides of the paper.
2)
Copy the adjustment chart (created in step 1) to A3 (11" x 17")
paper in RSPF duplex mode, and then check the image for
skews (Set in the RSPF feed tray so that the mark on the
adjustment chart is at the edge).
paper in RSPF duplex mode, and then check the image for
skews (Set in the RSPF feed tray so that the mark on the
adjustment chart is at the edge).
- Check with one of the following methods.
[Check Method 1]
[Check Method 2]
Check that the squareness of the main scanning direction
print line for the longitudinal direction of paper is within
1.0mm.
print line for the longitudinal direction of paper is within
1.0mm.
If the above requirement is not met for the paper's front side,
then do step 3).
then do step 3).
3)
Remove the hex nut cover in the RSPF diagonal adjustment
screw section.
screw section.
4)
Raise the RSPF unit upright, and loosen the fixing screw of the
hinge.
hinge.
A
B
Paper pass direction
A
B
a
b
C
D
c
d
(Front side)
Make sure that the output satisfies the condition: |a-b| ± 1 mm
(Back side)
Make sure that the output satisfies the condition: |c-d| ± 1 mm
A
0 - 1.0mm
MX-5141N ADJUSTMENTS AND SETTINGS 5 – 29
5)
Close the RSPF unit, and loosen the hex nut of the RSPF
diagonal adjustment screw section.
diagonal adjustment screw section.
Turn the hex wrench of the RSPF diagonal adjustment screw
to adjust the alignment.
to adjust the alignment.
* In the case of (A), turn the RSPF diagonal adjustment screw
counterclockwise.
In the case of (B), turn the RSPF diagonal adjustment screw
clockwise.
clockwise.
6)
Make a copy again and measure (a) and (b) on the copied test
chart. Repeat procedures 2) to 5) until the condition ((a) - (b) =
+/- 1mm or less) is satisfied.
chart. Repeat procedures 2) to 5) until the condition ((a) - (b) =
+/- 1mm or less) is satisfied.
7)
Tighten the hinge section fixing screw which was loosened in
the procedure 4) to tighten the hinge section.
the procedure 4) to tighten the hinge section.
7-C
DSPF parallelism adjustment
This adjustment must be performed in the following cases:
* The DSPF section has been disassembled.
* The DSPF unit has been replaced.
* When a DSPF JAM is generated.
* When a skew is generated in the document feed operation.
* When there is a distortion (skew) in the scan image in the DSPF
unit.
1)
Close the DSPF unit and check the clearance between the
projections in the front side and the rear side and the SPF
glass holding resin surface.
projections in the front side and the rear side and the SPF
glass holding resin surface.
2)
Visually check to insure that the clearance A is 1mm or less
and the clearance B is 0mm (in contact).
and the clearance B is 0mm (in contact).
If the above requirement is not met, do step 3).
A
B
A
B
0mm
1mm
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