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I.

ADJUSTMENTS ......................... 8-1

A. Electrical System

(finisher unit) .............................. 8-1

B. Electrical System

(saddle stitch unit) ...................... 8-5

C. Electrical System

(puncher unit (option)) ................ 8-7

D. Electric Unit/(Inserter Section

(Optional)) .................................. 8-9

E. Inserter Section ........................ 8-10

II.

ARRANGEMENT OF
ELECTRICAL PARTS ............... 8-12

A. Finisher Unit ............................ 8-12
B. Saddle Stitch Unit .................... 8-19
C. Puncher Unit (option) ............... 8-25
D. Light-Emitting Diodes (LED)

and Check Pins by PCB .......... 8-29

III. TROUBLESHOOTING .............. 8-31

A. Finisher Unit ............................ 8-31
B. Saddle Stitch Unit .................... 8-41
C. Puncher Unit (option) ............... 8-48
D. Inserter Section (Option) .......... 8-49

Perform the following adjustments when-

ever you have replaced the finisher controller
PCB or the height sensor (PS1).
1) Set SW3 on the finisher controller PCB as

indicated.

ON

1

2

3

4

5

6

7

8

2) Place a paper on the tray.
3) Press SW1 on the finisher controller PCB.

This causes the finisher to execute auto-
matic adjustment, in which the tray unit will
shift.

• At the end of adjustment, trays will return

to their home positions.

• During adjustment, LED1 flashes. At the

end of adjustment, LED1 turns and remains
ON.

• If automatic adjustment fails, the mecha-

nism stops while the tray in question is be-
ing adjusted (at the same time, LED1 turns
OFF).

4) Shift all bits on SW3 to OFF, and turn OFF

the host machine once.

If you have replaced the finisher controller

PCB or if an alignment fault occurs, adjust as
follows. Performing the steps will affect all pa-
per sizes.
1) Remove the rear cover of the finisher unit.
2) Set SW3 of the finisher controller PCB as

indicated.

ON

1

2

3

4

5

6

7

8

3) If you are using A4 paper, press SW1 on

the finisher controller PCB. If you are us-
ing LT paper, press SW2 on the finisher
controller PCB.

• Pressing SW1/2 will open the swing guide

and cause the alignment plate to move to
A4/LT positions.

4) Place 10 sheets of A4/LT paper between

the alignment plate and the guide plate, butt-
ing them against the stoppers.

5) Press SW1 or SW2 on the finisher control-

ler PCB, and butt the alignment plate against
the sheets.

• Pressing SW1 will shift the alignment plate

to the front in 0.35 mm increments.

• Pressing SW2 will shift the alignment plate

to the rear in 0.35 mm increments.

Stopper

Stopper

Guide plate

Alignment plate

A4/LT paper

Shift by SW2

Shift by SW1

6) Press SW1 and SW2 simultaneously to

store the adjustment value (this will lower
the swinging guide).

7) Shift all bits of SW3 to OFF, and install the

rear cover of the finisher unit.

Adjust as follows if you have replaced the

finisher controller PCB. Performing the steps
will affect all paper sizes and all stapling posi-
tions.
1) Remove the rear cover from the finisher

unit.

2) Set SW3 on the finisher controller PCB as

indicated.

ON

1

2

3

4

5

6

7

8

3) If you are using A4 paper, press SW1 on

the finisher controller PCB. If you are us-
ing LT paper, press SW2 on the finisher con-
troller PCB.

• Pressing SW1/2 will open the swing guide

and cause the feed belt to rotate.

4) Within 5 secs after pressing the switch, place

one sheet of A4/LT paper between the align-
ment plate and the guide plate, butting it
against the stoppers.

• When the finisher detects the paper, it will

lower the swing guide and execute stapling
(rear, 1-position). Take out the stapled pa-
per manually as delivery will not be ex-
ecuted.

Stopper

Guide plate

Alignment 

plate

Stopper

Stapler

5) If the stapling position is correct, set all bits

on SW3 to OFF to end the adjustments. If
you need to change the stapling position,
on the other hand, go to the next step.

6) To suit the position of the staple on the pa-

per, press SW1 or SW2 on the finisher con-
troller PCB as many times as necessary.

• Pressing SW1 will shift the stapling posi-

tion to the front in 0.3 mm increments.

• Pressing SW2 will shift the stapling posi-

tion to the rear in 0.3 mm increments.

Shift by SW2

Shift by SW1

Feeding direction

Staple

Paper

291±2mm (A4)/
273±2mm (LT)

7) Press SW1 and SW2 simultaneously.

• This will open the swing guide, and cause

the feed belt to rotate. Placement of one sheet
of A4/LT paper will cause the finisher to
start stapling.

8) Check the stapling position. If good, set all

bits of SW3 to OFF. If re-adjustments are
necessary, go back to Step 6.

The settings held by the finisher controller
PCB are changed as soon as SW1 or SW2
is pressed. As such, to recover the previous
settings after the press, you must press the
other of the two switches as many times
as you pressed previously.

Perform this adjustment in the following

instances:

a.

When the finisher controller PCB or the
EEPROM (Q2) on the finisher controller
PCB has been replaced

b.

When something causes the winding
amount to fluctuate
The "winding amount" is the amount of dif-
ference between the First and Second sheets
wound onto the buffer roller device in the
feed direction.

Paper delivery 
direction

First sheet

Second sheet

Third sheet

Winding

amount

1) Set SW3 on the finisher controller PCB as

indicated.

ON

1

2

3

4

5

6

7

8

2) Turn the host machine OFF then back ON

again.

3) Set the mode setting on the host machine to

"1" and the number of originals (A4 or LT)
to "3" in the staple mode.

4) Press the copy start key.

• Copying starts, three sheets for the first copy

are output as a stack on the staple tray, and
copying stops with the copies held at the
delivery roller.

5) Remove the stack of sheets from the fin-

isher delivery taking care to prevent the off-
set of the output sheets from changing.