Sharp MX-M363N / MX-M363U / MX-M503N / MX-M503U (serv.man18) Service Manual ▷ View online
MX-M503N MX-RP11 28 – 3
C. RSPF parallelism adjustment
1)
Make an RSPF parallelism adjustment sheet.
Cut copy paper in the longitudinal direction.
Cut copy paper in the longitudinal direction.
2)
Perform the adjustment according to the flowchart below.
1
20mm
A4/Letter size
<Flow chart>
<Work procedure>
a) Check section A.
Yes
No
Adjust hinge D
until there is a
resistance in
section A.
(Counter-
clockwise)
until there is a
resistance in
section A.
(Counter-
clockwise)
*
Check to insure that a slight resistance is felt when pulling out
the RSPF height adjustment sheet.
the RSPF height adjustment sheet.
Slowly pull out the RSPF height adjustment sheet.
Place the RSPF height adjustment sheet between section A
and the RSPF glass height adjustment resin surface (a), and
close the RSPF unit.
and the RSPF glass height adjustment resin surface (a), and
close the RSPF unit.
b) If it cannot be pulled out, loosen the fixing nut and turn the section
D clockwise to lift the RSPF unit, and make an adjustment.
If it can be pulled out without resistance, loosen the fixing nut
and turn the section D counterclockwise to move down the
RSPF unit, and make an adjustment.
If it can be pulled out without resistance, loosen the fixing nut
and turn the section D counterclockwise to move down the
RSPF unit, and make an adjustment.
Be careful not to cover the convex section of the glass
holding resin surface with the height adjustment sheet.
holding resin surface with the height adjustment sheet.
Start of the
adjustment
adjustment
Check section A.
Is
there a resist-
ance?
The section
A is lowered
too much.
Turn the hinge
D to lift the
RSPF so that
there is a
resistance in
the section A.
(Clockwise)
D to lift the
RSPF so that
there is a
resistance in
the section A.
(Clockwise)
a
A
D
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MX-M503N MX-RP11 28 – 4
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.
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, loosen the fixing nut and 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.
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.
counterclockwise to move down the RSPF unit.
* Insert a clearance gauge in the range of 20mm from the
edge (a) of the OC mat.
Adjust the
section F.
E
20mm
a
Section
F
4.3
-
5.0mm
1
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MX-M503N MX-RP11 28 – 5
Yes
Yes
No
No
End of the
adjustment
adjustment
The bosses in section A
and B are excessively
pressed. (The right
side is separating.)
and B are excessively
pressed. (The right
side is separating.)
Adjust hinge
E until the
separation in
section C is
deleted.
(Counter-
clockwise)
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.
Check to confirm that the projection in section C in the right
front side of then RSPF bottom is in contact with the glass
surface (b).
front side of then RSPF bottom is in contact with the glass
surface (b).
*
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.)
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 RSPF glass height adjustment resin surface (a), and
close the RSPF unit.
and the RSPF 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.
adjustment sheet.
Check section B.
a
B
b
b
C
b
C
E
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MX-M503N MX-RP11 28 – 6
D. RSPF skew adjustment (Front surface mode)
This adjustment is needed in the following situations:
* The RSPF section has been disassembled.
* When replacing the RSPF unit.
* The RSPF unit generates skewed scanned images.
1)
* 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.
SIM 64-2 set values
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).
• Check with one of the following methods.
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.
Check that the squareness of the main scanning direction
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.
1
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
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
Make sure that the output satisfies the condition: |c-d| ± 1 mm
A
0 - 1.0mm
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