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MX-M316N  ADJUSTMENTS AND SETTINGS  5 – 9

* RSPF original leading edge adjustment (front side)
* RSPF original off-center adjustment (front side)
* RSPF original sub-scan magnification adjustment 

(front side)

8) RSPF adjustment patterns are loaded into the RSPF. 

(Set so that the pattern surface faces down.)

* By pressing the [REPRINT] key, you can return to the cas-

sette selection screen and have the machine self-print
RSPF adjustment patterns again.

9) Press the [EXECUTE] key, and the machine starts loading

RSPF adjustment patterns (for the back side).
* The screen shows a message indicating that the machine is

reading RSPF adjustment patterns (for the back side).
The machine starts calculating the adjustment amount (for
the back side) after it has read the patterns for the back side.
After the machine has finished calculating the adjustment
amount for the back side, the next screen appears where
you can view the results of the adjustments.

* RSPF original leading edge adjustment (back side)
* RSPF original off-center adjustment (back side)
* RSPF original sub-scan magnification adjustment 

(back side)

10) The adjustment result screen appears.

This screen shows the current values along with the previous
values in parentheses.
* By pressing the [REPRINT] key, you can return to the cas-

sette selection screen and have the machine self-print
RSPF adjustment patterns (for the front and back sides)
again.

* To have the machine start re-reading the RSPF adjustment

patterns (front and back sides), press the [RESCAN] key.

* To return to the top menu without saving the adjustment val-

ues into EEPROM and RAM, press the [RETRY] key.

* To display the data used for adjustment, press the [DATA]

key.

11) To save the adjustment values into EEPROM and RAM and

return to the top menu, press the [OK] key.
* To return to the result screen, press the [BACK] key.

 

This adjustment must be performed in the following cases:
* When the scanner (reading) section is disassembled.
* When the copy image is distorted.

 

Before execution of this adjustment, remove the document table
glass.
1)

Remove the lamp unit, and then loosen the screws which are
fixing the scanner unit A and the drive wire. Release the scan-
ner unit A from the drive wire.

2)

Turn the scanner drive pulley manually and shift the scanner
unit B to bring it into contact with the stopper.
When the scanner unit B is in contact with the two stoppers on
the front and the rear frames simultaneously, the parallelism is
proper.

If this requirement is not met, do the following steps.

MX-M316N  ADJUSTMENTS AND SETTINGS  5 – 10

3) Loosen the fixing screw of the pulley angle on the front frame

side of the scanner unit B.

4) Adjust the position of the pulley angle on the front frame side

of the scanner unit B so that it is in contact with two stoppers
on the front and the rear frames simultaneously.

5) Fix the pulley angle on the front frame side of the scanner unit

B.
If a satisfactory result is not obtained from the above proce-
dures, perform the following procedures.
Loosen the fixing screw of the scanner unit drive pulley which
is not in contact.
Without moving the scanner unit drive shaft, turn the scanner
unit drive pulley manually and adjust so that the scanner unit B
is in contact with both stoppers on the front frame and the rear
frame simultaneously. (Change the relative position of the
scanner unit drive pulley and the drive shaft.) Fix the scanner
unit drive pulley fixing screw.

6)

With the scanner unit B in contact with both stoppers, fit the
edge of the scanner unit A with the right edge of the frame, and
fix the scanner unit A with the fixing screw.

 

1)

Make a test chart on A3 (11" x 17") paper as shown below.
(Draw a rectangular with four right angles.)

2)

Set the test chart prepared in the procedure 1) on the docu-
ment table. (Shift the test chart edge 30mm from the reference
position as shown below.) With the document cover open,
make a copy on A3 (11" x 17") paper.

L

L

L = 10mm

L

L

30mm

MX-M316N  ADJUSTMENTS AND SETTINGS  5 – 11

3) Check for distortion in the sub scanning direction.

If La = Lb, there is no distortion.

If there is any distortion in the sub scanning direction, perform
the following procedures.

4) Loosen either one of the fixing screws of the scanner unit drive

pulley. (Either one on the front frame or on the rear frame will
do.)

5) Without moving the scanner unit drive shaft, manually turn the

scanner unit drive pulley to change the parallelism of the scan-
ner unit A and B. (Change the relative position of the scanner
unit drive pulley and the drive shaft.)

6) Tighten the scanner unit drive pulley fixing screw.
Repeat the procedures 2) - 6) until the condition of the procedure 3)
is satisfied.
If the distortion in the sub scanning direction cannot be deleted with
the above procedures, perform ADJ 4A Scanner (reading) unit par-
allelism adjustment.

 

1)

Make a test chart on A3 (11" x 17") paper as shown below.
(Draw a rectangular with four right angles.)

2)

Set the test chart prepared in the procedure 1) on the docu-
ment table, and make a copy on A3 (11" x 17") paper.

3)

Check for distortion in the main scanning direction.
If the four angles of the rectangle of the copy image are right
angles, it is judged that there is no distortion. (The work is
completed.)

If there is any distortion in the main scanning direction, perform
the following procedure.

4)

Check the difference (distortion balance) between left-hand
and right-hand side images distortions.

If Lc = Ld, the distortion on the left is equal to that on the right.
(The distortions are balanced.)
If the above condition is satisfied, go to the procedure 6).
If not, perform the following procedures.

La

Lb

L

L

L = 10mm

L

L

Lc

Ld

Copy A

Lc

Ld

Copy B

There is no difference
between the distortion on
the right and that on the left.

Lc     Ld

Lc     Ld

There is some difference
between the distortion on
the right and that on the left.

MX-M316N  ADJUSTMENTS AND SETTINGS  5 – 12

5) Change the height balance of the scanner rail on the front

frame side.

Remove the lower cabinet of the operation panel. Loosen the
scanner rail fixing screw to change the balance between the
right and the left heights of the scanner rail.
Repeat the procedures 2) - 5) until the difference between the
image distortions (distortion balance) is deleted.

6) Without changing the balance of the scanner rail on the front

frame side, change the overall height.

7) Set the test chart prepared in the procedure 1) on the docu-

ment table, and make a copy on A3 (11" x 17") paper. Check
that the distortion in the main scanning direction is within the
specified range.
Repeat the procedures 6) and 7) until the distortion in the main
scanning direction is in the specified range.

 

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.
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 and B to the
leading and trailing edges of the paper surface lead edge sec-
tion.

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.

Check Method 2
Check that the squareness of the main scanning direction
print line for the longitudinal direction of paper is within
1.0mm.

If the copy image is not in the above state, perform the pro-
cedure 3).

3)

Open the RSPF unit, and loosen the fixing screw of the hinge.

4)

Slide the RSPF unit in the arrow direction to make the skew
adjustment.

5)

Make a copy again and measure (a) and (b) on the copied test
chart. Repeat procedures 2) to 5) until the condition ((a) - (b) =

Paper pass direction

a

b

(Front side)

Make sure that the output satisfies the condition: |a-b| ± 1 mm

0 - 1.0mm