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Model
MX-2300N MX-2700N MX-2300G MX-2700G MX-2300FG MX-2700FG (serv.man11)
Pages
56
Size
10.06 MB
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PDF
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Service Manual
Brand
Device
Copying Equipment / Service Manual MX-RPX1
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mx-2300n-mx-2700n-mx-2300g-mx-2700g-mx-2300fg-mx-2.pdf
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Sharp MX-2300N / MX-2700N / MX-2300G / MX-2700G / MX-2300FG / MX-2700FG (serv.man11) Service Manual ▷ View online

MX-RPX1  MAINTENANCE  7 – 1
Service Manual      
 
[7] MAINTENANCE
1. Maintenance system table
: Check (Clean, replace, adjust if necessary.)  {: Clean  ▲: Replace  U: Adjust  ✩: Lubricate  †: Shift position
No.
Part name
When 
calling
Follows the 
main unit cycle.
Remark
1
Paper feed/ 
transport 
section
Paper feed roller
{
{
Replacement reference: RSPF document feed 100K (SIM22-8), or 
after 1 year of use
2
Pick-up roller
{
{
3
Separation roller
{
{
4
PS roller (Drive)
{
{
5
Scan front roller (Drive)
{
{
6
Platen roller (Drive)
{
{
7
Scan rear roller (Drive)
{
{
8
Torque limiter SPF (for separation)
Replacement reference: RSPF document feed 400K (SIM22-8), or 
after 2 years of use
9
Take-up torque limiter (for pick up)
10
Paper exit 
section
Paper exit roller SPF
{
{
11
Discharge brush
12
Reverse 
section
SWB pass section transport roller 
(Drive)
{
{
13
SWB roller (Drive)
{
{
14
Drive 
section
Gears
15
Belts
2
6
7
10
5
4
9
8
3
1
11
12
13
15
15
MX-RPX1  ADJUSTMENTS  8 – 1
Service Manual      
 
[8] ADJUSTMENTS
1. RSPF magnification ratio adjustment
NOTE: To execute this adjustment, the CCD unit must have been
properly installed. To execute this adjustment, the OC
mode adjustment when copying must have been com-
pleted.
1)
Place a scale on the document table as shown in the figure
below, and make a normal copy to make a test chart.
2)
Set the test chart on the RSPF, and make a normal copy.
3)
Compare the outputted copy with the test chart. If it is judged
from comparison that an adjustment is required, perform the
following procedures.
4)
Execute SIM48-1.
5)
Change the mode to "C: SPF (MAIN)." The current magnifica-
tion ratio correction value is displayed in 2 digits on the display
section.
6)
Enter a set value and press [OK] key. The correction value is
saved and a copy is made.
7)
Change the mode to "E: SPFB (MAIN)." The current magnifi-
cation ratio correction value is displayed in 2 digits on the dis-
play section.
8)
Enter a set value and press [OK] key. The correction value is
saved and a copy is made.
9)
Change the mode to "D: SPF (SUB)." The current magnifica-
tion ratio correction value is displayed in 2 digits on the display
section.
10) Enter a set value and press [OK] key. The correction value is
saved and a copy is made.
11) Change the mode to "F: SPFB (SUB)." The current magnifica-
tion ratio in the back surface sub scanning direction is dis-
played in 2 digits on the display section.
12) Enter a set value and press [OK] key. The correction value is
saved and a copy is made.
<Adjustment specifications>
2. RSPF document off-center 
adjustment
NOTE: To execute this adjustment, the paper off-center must have
been adjusted properly.
1)
Set the test chart for center position adjustment (which is
made by yourself) on the RSPF.
<Adjustment specifications>
Draw a straight line on paper in the scanning direction.
2)
Make a normal copy from the manual paper feed tray. Com-
pare the printed copy and the test chart. If an adjustment is
required, perform the following procedures.
3)
Execute SIM50-12.
4)
Change the mode to "B: SPF (SIDE1)." The current off-center
adjustment value is displayed in 2 digits on the display section.
5)
Enter a set value and press [START] key. The correction value
is saved and a copy is made.
6)
Change the mode to "C: SPF (SIDE2)." The current back sur-
face off-center adjustment value is displayed in 2 digits on the
display section.
7)
Enter a set value and press [OK] key. The correction value is
saved and a copy is made.
<Adjustment specifications>
Note: Since the copied scale is used as a test chart,
place the scale in parallel to the sides.
㩷 㩷
CLOSE
0
A:
A
㧦 80
B
㧦 50
C
㧦 50
D
㧦 50
㧧 CCD(MAIN)
㧧 CCD(SUB)
SPF(MAIN)
SPF(SUB)
SIMULATION
 NO.48-01
MAGNIFICATION
 ADJUSTMENT
80
1
㨪99 㨉
OK
TEST
Mode
Specifications
SIM
Set value
Set 
range
Magnification 
ratio 
adjustment
Normal 
±1.0%
SIM48-1
<Main scanning 
direction>
C: Front surface
E: Back surface
<Sub scanning 
direction>
D: Front surface
F: Back surface
Add 1: 0.1% 
enlarged.
Subtract 1: 
0.1% 
reduced.
Default: 50
1 – 99
Mode
Specifications
SIM
Set value
Set 
range
Document 
off-center 
adjustment
Center position 
(Default): 3750 
pixel
SIM50-12
B: Front 
surface
C: Back 
surface
Add 1: Shift to R 
side by 0.1mm.
Subtract 1: Shift to 
F side by 0.1mm.
1 – 99
0
A:
A
㧦 99
B
㧦 50
㧧 OC
㧧 SPF(SIDE1)
SIMULATION
 NO.50-12
ORGINAL CENTER OFFSET SETUP
99
㨇 1㨪 99 㨉
OK
TEST
CLOSE
C
㧦 50
㧧 SPF(SIDE2)
MX-RPX1  ADJUSTMENTS  8 – 2
3. RSPF copy image position, void area 
image adjustment
1)
Place a scale on the OC table as shown in the figure below.
2)
Make a copy. Use the output copy as the original document,
and make a copy of it from the RSPF.
3)
Check the output result. If an adjustment is required, perform
the following procedures.
4)
Execute SIM50-6.
5)
Set the RSPF lead edge position set value so that an image
similar to the image adjusted in the previous OC image lead
edge position is outputted.
<<Set range and default value of each set value>>
A, B: The greater the value is, the slower the scanning timing is.
C – H: The greater the adjustment value is, the greater the image 
loss is.
A – H: 1 step = 0.1mm
The SPF rear edge image loss is provided against the shade. The
default value is 0.
4. RSPF scan position adjustment
1)
Enter SIM53-08 mode, and press [OK] button.
<<Description of adjustment display>>
• When the set value is increased by 1, the distance from the
home position to the RSPF scan position is increased.
• When the set value is changed by 1, the position is shifted
by 0.1mm.
* Since the SPF scan position distance are changed, RRCA is
not changed by the adjustment value.
[Note]
• After completion of the RSPF scan position adjustment, exe-
cute the RSPF lead edge adjustment (for both sides).
2)
Check to confirm that the lead edge is not shifted. (Both sur-
faces) (If the original lead edge adjustment is proper, the scan
position after change automatically follows.)
Item
Display item
Descriptions
Set 
range
Default 
value
A
SIDE1
Front surface 
document scan 
start position 
adjustment (CCD)
1 – 99
50
B
SIDE2
Back surface 
document scan 
start position 
adjustment (CCD)
1 – 99
50
C
Image 
loss 
quantity 
setting, 
SIDE1
LEAD_EDGE 
(SIDE1)
Front surface lead 
edge image loss 
quantity setting
0 – 99
30
D
FRONT_REAR 
(SIDE1)
Front surface side 
image loss 
quantity setting
0 – 99
20
E
TRAIL_EDGE 
(SIDE1)
Front surface rear 
edge image loss 
quantity setting
0 – 20
0
F
Image 
loss 
quantity 
setting, 
SIDE2
LEAD_EDGE 
(SIDE2)
Back surface lead 
edge image loss 
quantity setting
0 – 99
30
G
FRONT_REAR 
(SIDE2)
Back surface side 
image loss 
quantity setting
0 – 99
20
H
TRAIL_EDGE 
(SIDE2)
Back surface rear 
edge image loss 
quantity setting
0 – 20
0
Note: Since the copied scale is used as a test chart,
place the scale in parallel to the sides.
0
A:
A
㧦 26
B
㧦 50
C
㧦 15
D
㧦 20
㧧 SIDE1
㧧 SIDE2
㧧 LEAD EDGE
㧧 FRONT_REAR
SIMULATION
 NO.50-06
LEAD EDGE ADJUSTMENT VALUE(RSPF)
26
㨇 1㨪 99 㨉
TEST
CLOSE
OK
Item
Display item
Description
Set 
range
Default 
value
A
ADJUST VALUE
RSPF scan position 
adjustment
1 – 99
50
MX-RPX1  ADJUSTMENTS  8 – 3
5. RSPF height adjustment
1)
Make an RSPF height adjustment sheet 
Cut copy paper in the longitudinal direction.
2)
Perform the adjustment according to the flowchart below.
20mm
A4/Letter size
Start of the
adjustment
Check section A.
The height on
the right side
is not proper.
Check section
A again.
Yes
Yes
No
No
Is
there a resist-
ance?
Adjust hinge D
until there is a
resistance in
section A.
(Counter-
clockwise)
Adjust hinge
Duntil there is
a resistance in
section B.
Adjust hinge
Duntil there is
a resistance in
section A.
(Counter-
clockwise)
<Work procedure>
<Flow chart>
a)
Check section A.
*
Place the RSPF height adjustment sheet between section A
and the SPF glass height adjustment resin surface (a), and
close the RSPF unit.
Slowly pull out the RSPF height adjustment sheet.
Check to insure that a slight resistance is felt when pulling out
the RSPF height adjustment sheet.
b)
If it cannot be pulled out or there is no resistance to pull out,
turn section Dto adjust.
* Turn section Dclockwise to lift the RSPF unit. Turn it
counterclockwise to move down the RSPF unit.
Be careful not to cover the convex section of the glass
holding resin surface with the height adjustment sheet.
a
A
D
Is
there a resist-
ance?
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