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MX-RP19 N  MAINTENANCE  3 – 1

MX-RP19 N

Service Manual

 

X: Check (Clean, replace, or adjust according to necessity.) O: Clean : Replace : Adjust 

✩: Lubricate

Document trans-
port section 
(RSPF)

1

Paper feed roller

O

O

O

O

O

O

O

Replacement reference:
Replace according to the RSPF paper feed 
counter value.
RSPF section roller: 100K or 1 years of use
When replacing the paper feed roller, apply 
grease to the paper feed shaft. (GP-501MR)

2

Pickup roller

O

O

O

O

O

O

O

3

Separation roller

O

O

O

O

O

O

O

4

Torque limiter

X

X

X

X

X

X

X

Replacement reference:
Replace according to the RSPF paper feed 
counter value.
RSPF torque limiter: 400K or 2 years of use

5

Discharge brush

X

X

X

X

X

X

X

6

Transportation 
rollers

O

O

O

O

O

O

O

7

Sensors

X

X

X

X

X

X

X

8

Reading plate

O

O

O

O

O

O

O

9

Gears

X

X

X

X

X

X

X

10

Belts

X

X

X

X

X

X

X

11

OC mat

O

O

O

O

O

O

O

7

2

5

3

6

6

1

6

7

10

11

4

MX-RP19 N  ADJUSTMENTS  4 – 1

MX-RP19 N

Service Manual

 

This adjustment is needed in the following situations:
* The CCD unit has been removed from the machine.
* The CCD unit has been replaced.
* When the copy image focus is not properly adjusted.
* When the copy magnification ratio in the copy image main scan-

ning direction is not properly adjusted.

* U2 trouble has occurred.
1) Enter the SIM 48-1 mode.

2) Set the adjustment item CCD (MAIN) to 50 (default value).

Select  the  adjustment  item  with  the  scroll  key,  and  enter  the
adjustment value with 10-key and press [OK] key.

3) Place a scale on the original table as illustrated below.

4) Make a normal copy on A4 paper.

Press  [CLOSE]  key  to  shift  from  the  simulation  mode  to  the
copy mode, and make a copy.

5) Compare the copied image of the scale and the actual scale

length in terms of length.

6)

Obtain the copy magnification ratio correction ratio in the main
scanning direction from the following formula.
Main  scanning  direction  copy  magnification  ratio  correction
ratio = (Original size - Copy image size) / Original size x 100%
(Example) 
Compare  the  scale  of  10mm  with  the  scale  of  10mm  on  the
copy image.
Main  scanning  direction  copy  magnification  ratio  correction
ratio = (100 - 99) / 100 x 100 = 1

If  the  copy  magnification  ratio  is  not  satisfactory,  perform  the
following procedures.

7)

Remove the document table glass.

8)

Remove the dark box cover.

9)

To prevent against shift of the CCD unit optical axis, mark the
CCD unit base as shown below.

* This procedure must be executed also when the CCD unit is

replaced.

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2.

10

20

90

100

110

10

20

90

100

110

1.0mm

100mm scale
(Orignal)

Copy image 
(1mm (1%) 
shorter than 
the original)

MX-RP19 N  ADJUSTMENTS  4 – 2

10) Loosen the CCD unit fixing screws.

* Never loosen the screws marked with X.

If any one of these screws is loosened, the position and the
angle  of  the  CCD  unit  base  may  be  changed  to  cause  a
problem,  which  cannot  be  adjusted  in  the  market.  In  that
case, the whole scanner unit must be replaced.

11) Slide the CCD unit in the arrow direction (CCD sub scanning

direction) to change the installing position.
When the copy image is longer than the original scale, shift the
CCD unit  in  the  direction B.  When the copy image  is  shorter
than the original scale, shift the CCD unit in the direction A.
One scale of mark-off line corresponds to 0.2%.
At  that  time,  fix  the  CCD  unit  so  that  it  is  in  parallel  with  the
scale on the front and the rear side of the CCD unit base.
* Fix the CCD unit so that it is in parallel with the line marked

in procedure 9).

12) Make a copy and check the copy magnification ratio again.

If  the  copy  magnification  ratio  is  not  in  the  range  of  100  +/-
0.8%,  repeat  the  procedures  of  9)  -  11)  until  the  condition  is
satisfied.

NOTE: By  changing  the  CCD  unit  fixing position with  the  simula-

tion  48-1  adjustment  value  at  50,  the  copy  magnification
ratio is adjusted within the specified range (100 +/- 0.8%)
and the specified resolution is obtained based on the opti-
cal system structure.

This adjustment must be performed in the following cases:
* When the scan control PWB is replaced.
* When the EEPROM on the scan control PWB is replaced.
* When U2 trouble occurs.
* When the copy magnification ratio is not matched.
* When the DSPF/RSPF is disassembled.

1)

Place the duplex adjustment chart shown below on the docu-
ment  tray  of  the  DSPF/RSPF.  The  adjustment  chart  is  pre-
pared by the following procedures. Use A4 (11" x 8.5") paper,
and put marks on both sides and both surfaces of the paper at
10mm from each edge.

2)

Make a duplex copy at the normal ratio on A4 paper.

3)

Measure  the  images  on  the  copy  paper  and  the  original
images.

4)

Obtain the image magnification ratio according to the following
formula:
Image magnification ratio = Original size / Original size x 100
(%)
Image magnification ratio = 99 / 100 x 100 = 99 (%)
If  the  image  magnification  ratio  is  within  the  specified  range
(100 +/- 0.8%), there is no need to perform the adjustment.
If it is not within the specified range, perform the following pro-
cedures.

A4 size

(Both the front surface 

and the back surface)

10mm

10mm

Paper pass direction

original

10

50

100

150

200

250

copy

10

50

100

150

200

250

MX-RP19 N  ADJUSTMENTS  4 – 3

5) Enter the SIM 48-1 mode.

* Items  A,  C,  E:  When  the  set  value  is  increased  by  1,  the

magnification ratio is increased by 0.02%.

* Items B, D: When the set value is increased by 1, the magni-

fication ratio is increased by 0.1%.

* It affects scanning (PC scanning, etc.) as well as copying.

6) Select  an  adjustment  item  of  SPF  (MAIN)/SPFB  (MAIN)  with

the scroll key.

7) Enter an adjustment value with 10-key, and press [OK] key.

When the adjustment value is increased, the image magnifica-
tion ratio is increased. When the adjustment value is changed
by 1, the image magnification ratio is changed by 0.02%.

Repeat  the  procedures  of  1)  -  7)  until  a  satisfactory  result  is
obtained.

NOTE: When [CLOSE] key is pressed in this simulation mode, the

machine goes into the normal operation mode. Under this
state,  copy  check  can  be  normally  performed.  When  the
system key is pressed, the machine returns to the simula-
tion mode.

This adjustment must be performed in the following cases:
* When the scan control PWB is replaced.
* When the EEPROM on the scan control PWB is replaced.
* When U2 trouble occurs.
* When the copy magnification ratio is not matched.
* When the RSPF is disassembled.
1)

Place the duplex adjustment chart shown below on the docu-
ment  tray  of  the  RSPF.  The  adjustment  chart  is  prepared  by
the  following  procedures.  Use  A4  (11"  x  8.5")  paper,  and  put
marks on both sides and both surfaces of the paper at 10mm
from each edge.

2)

Make a duplex copy at the normal ratio on A4 paper.

3)

Measure  the  images  on  the  copy  paper  and  the  original
images.

4)

Obtain the image magnification ratio according to the following
formula:
Image magnification ratio = Original size / Original size x 100
(%)
Image magnification ratio = 99 / 100 x 100 = 99 (%)
If  the  image  magnification  ratio  is  within  the  specified  range
(100 +/- 0.8%), there is no need to perform the adjustment.
If it is not within the specified range, perform the following pro-
cedures.

A

CCD(MAIN)

SCAN main scanning 
magnification ratio 
adjustment (CCD)

1 - 99

50

B

CCD(SUB)

SCAN sub scanning 
magnification ratio 
adjustment (CCD)

1 - 99

50

C

SPF(MAIN)

DSPF document front 
surface magnification ratio 
adjustment (Main scan)

1 - 99

50

D

SPF(SUB)

DSPF document front 
surface magnification ratio 
adjustment (Sub scan)

1 - 99

50

E

SPFB(MAIN)

DSPF document back 
surface magnification ratio 
adjustment (Main scan)

1 - 99

50

SPF (MAIN)

Main scanning direction image magnification ratio 
(Front surface)

SPFB (MAIN) Main scanning direction image magnification ratio 

(Back surface)

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2.

A4 size

10mm

10mm

Paper pass direction

original

copy

10

50

100

150

200

10

50

100

150

200