Ricoh sr740 SPECIFICATIONS

3,000-SHEET FINISHER

(Machine Code: B312)

January 8, 2000 SPECIFICATIONS

1. OVERALL MACHINE INFORMATION

1.1 SPECIFICATIONS

Paper Size:

Tray Modes Sizes

A3 to A6 lengthwise,
DLT to HLT

A3 to A6 lengthwise,
DLT to LT

Paper Weight:

Upper tray

Sort/stack mode A3 to A5, DLT to LT

Shift tray

Staple tray A3 to B5, DLT to LT

Tray Weight

Shift tray 52 g/m2 to 157 g/m2, 14 to 42 lb
Upper tray 52 g/m2 to 157 g/m2, 14 to 42 lb
Staple tray 64 g/m2 to 80 g/m2, 17 to 21 lb

No sort/stack
mode

Paper Capacity (in case of 80 g/m2, 20 lb):

Tray Modes Paper size Punch mode

A4-S, LT-S 2,500 sheets 3,000 sheets
A5 100 sheets 100 sheetsShift tray No staple
Others 1,500 sheets 1,500 sheets

Upper tray

One size

Staple tray

Mixed sizes

A4/LT or smaller 200 sheets 250 sheets
Larger than A4/LT 50 sheets 50 sheets
A4/LT or smaller 40 sheets 50 sheets
Larger than A4/LT 25 sheets 30 sheets
A3 and A4-S
DLT an d LT-S

No punch

mode

25 sheets 30 sheets

(-S: Sideways)

Options

B312-1

SPECIFICATIONS January 8, 2000

Tray Modes Paper size

LT-S

LT
A3, B4

DLT, LG

LT-S

LT
A3, B4
DLT, LG

A3 and A4-S
B4 and B5-S

A3 and A4-S
B4 and B5-S

Shift

tray

Staple

No punch

One size

Staple
Punch

One size

Staple

No punch

Mixed sizes

Staple
Punch

Mixed sizes

Sheets/

set

2 to 9 150 300 to 1,350A4-S
10 to 50 300 to 60 3,000
2 to 9 150 300 to 1,350A4, B5-S
10 to 50 150 to 30 1,500
2 to 9 100 200 to 900
10 to 30 150 to 50 1,500
2 to 9 150 300 to 1,350A4-S
10 to 40 250 to 63 2,500
2 to 9 150 300 to 1,350A4, B5-S
10 to 40 150 to 37 1,500
2 to 9 100 200 to 900
10 to 25 150 to 60 1,500

2 to 30 50 100 to 1,500

2 to 25 50 100 to 1,250

Sets

Total

capacity

(-S: Sideways)

Punch Unit (option):

Type

Version Holes

American

European

Nordic 4 21-70-21 mm 6.5 mm

Paper Size

Type Sizes

American 2 A3 to A5, DLT to LT
American 3 A3, B4, A4-S, B5-S, DLT, LT-S
European 2 A3 to A5, DLT to LT
European 4 A3, A4-S, DLT, LT-S

Nordic 4 A3 to A5, DLT to LT

Distance

between holes

2 2.76 inches 0.31 inches
3 4.25 inches 0.31 inches
2 80 mm 6.5 mm
4 80-80-80 mm 6.5 mm

Diameter

(-S: Sideways)

B312-2

January 8, 2000 SPECIFICATIONS

Paper Weight

Type Weight

American 2
American 3
European 2
European 4

Nordic 4

52 g/m

52 g/m

2

to 163 g/m2, 14 to 42 lb

2

to 128 g/m2, 14 to 34 lb

Staple Position: 4 positions

1 staple: 3 positions (Front, Rear and Rear-Oblique)

2 staples: 1 position
Staple Replenishment: Cartridge (5,000 staples)
Power Source: 24Vdc (from copier)
Power Consumption: 48 W (without Punch unit)

60 W (with Punch unit)

Dimensions

625 x 545 x 960 mm, 24.61 x 21.46 x 37.80 inches

(W x D x H) :
Weight: 45 kg (without Punch unit)

47.4 kg (with Punch unit)

B312-3

Options

ELECTRICAL COMPONENT LAYOUT January 8, 2000

1.2 ELECTRICAL COMPONENT LAYOUT

1

2

3

4
5
6

7
8
9

10

11

12

B312V103.WMF

30

31

32

28
27

26
25

33

34

29

13

14

B312V102.WMF

15

16

17
18

19

20
21

22

23

24

42

41

40

39

38

35

36

B312V104.WMF

37

B312-4

January 8, 2000 ELECTRICAL COMPONENT LAYOUT

1. Shift Tray Lift Motor

2. Shift Tray Exit Motor

3. Tray Junction Gate Solenoid

4. Upper Transport Motor

5. Stapler Junction Gate Solenoid

6. Pre-stack Junction Gate Solenoid

7. Pre-stack Motor

8. Main Board

9. Positioning Roller Solenoid

10. Lower Transport Motor

11. Shift Tray Lower Limit 1 Sensor

12. Shift Tray Lower Limit 2 Sensor

13. Upper Tr ay Paper Limit Sensor

14. Upper Tr ay Exit Sensor

15. Shift Tray Exit Plate HP Sensor

16. Shift Tray Exit Plate Motor

17. Shift Tray Upper Limit Switch

18. Punch Board

19. Punch Motor

20. Punch HP Sensor

21. Hopper Sensor

22. Entrance Sensor

23. Front Door Safet y Switch

24. Stapler Tray Entrance Sensor

25. Shift Motor

26. Shift Tray Half-turn Sensor

27. Shift Tray Exit Sensor

28. Stack Height 2 Sensor

29. Stack Height 1 Sensor

30. Stack Feed-out Motor

31. Jogger Motor

32. Jogger Fence HP Sensor

33. Stack Feed-out Belt HP Sensor

34. Stapler Tray Paper Sensor

35. Stapler Motor

36. Stapler Rot ation Motor

37. Stapler Rot ation HP Sensor

38. Stapler HP Sensor

39. Staple End Switch

40. Cart ridge Set Switch

41. Staple Hammer HP Sensor

42. Staple Hammer Motor

B312-5

Options

ELECTRICAL COMPONENT DESCRIPTION January 8, 2000

1.3 ELECTRICAL COMPONENT DESCRIPTION

Symbol Name Function Index No.

Motors

Upper

M1

M2
M3 Jogger Moves the jogger fence. 31

M4 Stapler Moves the staple unit from side to side. 35
M5

M6
M7 Stack Feed-out Drives the stack feed-out belt. 30

M8 Shift Tray Exit Drives the exit roller for the shift tray. 2

M9 Shift Moves the shift tray from side to side. 25
M10 Shift Tray Lift Moves the shift tray up or down. 1
M11 Punch Drives the punch shaft and roller. 19
M12 Pre-stack Drives the pre-stack roller. 7
M13 Shift Tray Exit

Sensors

S1
S2
S3
S4
S5
S6
S7
S8

S9 Shift Tray Exit Checks for misfeeds at the shift tray. 27

S10
S11
S12
S13

Transport
Lower

Transport

Stapler
Rotation

Staple
Hammer

Plate

Entrance Detect s the copy paper entering the finisher
Stapler Tray

Entrance
Jogger Fence

HP
Stapler Tray

Paper
Stapler HP Detects the home position of the staple unit

Stapler
Rotation HP

Staple
Hammer HP

Stack Feed-out
Belt HP

Stack Height 1 Detects when the top of the copy paper stack
Stack Height 2 Detects when the top of the copy paper stack
Upper Tray

Exit
Upper Tray

Paper Limit

Drives the entrance rollers, the middle and
upper transport rollers, and upper tray exit
roller.

Drives the lower transport rollers, the
alignment brush roller, and the positioning
roller.

Rotates the stapler 45 degrees.
Drives the staple hammer.

Moves the exit plate up or down.

and checks for misfeeds.
Detects the copy paper entering the staple

tray and checks for misfeeds.
Detects the home position of the jogger fence.

Detects the copy paper in the staple tray.

for side-to-side movement.
Detects the home position of the stapler unit

for 45-degree rotation.
Detects the home position of the staple

hammer.
Detects the home position of the stack feed-

out belt.

in the shift tray is at the correct position.
in the shift tray has become too high.

Checks for misfeeds at the upper tray.
Detects when the paper stack height in the

upper tray is at its upper limit.

4

9

36
42

16

22
24
32
34
38
37
41
33

29
28
14
13

B312-6

January 8, 2000 ELECTRICAL COMPONENT DESCRIPTION

Symbol Name Function Index No.

S14
S15
S16
S17
S18
S19

Shift Tray
Half-turn

Shift Tray
Lower Limit 1

Shift Tray
Lower Limit 2

Hopper Detects when the punch waste hopper is full
Punch HP
Shift Tray Exit

Plate HP

Detects the return position for side-to-side
movement of the shift tray.

Detects when the shift tray is nearly at its
lower limit.

Detects when the shift tray is at its lower limit.

and detects when the punch tray is set.
Detects the home position of the punch shaft

and roller.
Detects the home position of the exit plate.

26
11
12
21
20
15

Switches

SW1
SW2

Front Door
Safety

Shift Tray
Upper Limit

Cuts the dc power when the front door is
opened.

Cuts the power to the shift tray lift motor when
the shift tray position is at its upper limit.

23
17

SW3 Staple End Detects the staples in the cartridge. 39
SW4 Cartridge Set Detects the staple cartridge in the stapler. 40

Solenoids

SOL1
SOL2
SOL3
SOL4

PCBs

PCB1
PCB2

Tray Junction

Drives the tray junction gate.

Gate
Stapler

Drives the stapler junction gate.

Junction Gate
Positioning

Roller
Pre-stack

Moves the positioning roller against the
stapling tray.

Drives the pre-stack junction gate.

Junction Gate

Main Controls the finisher and communicates with

the copier.

Punch Passes signals between the punch unit and

the finisher main board.

3
5

10

6

8

18

Options

B312-7

MECHANICAL COMPONENT LAYOUT January 8, 2000

1.4 MECHANICAL COMPONENT LAYOUT

19

18

17

16
15
14

13

1

2 3 4

5

6
7
8

9
10

12

1. Upper Tray

2. Upper Tray Exit Roller

3. Upper Transport Roller

4. Tray Junction Gate

5. 1st Entrance Roller

6. Punch Unit

7. 2nd Entrance Roller

8. Punch Waste Hopper

9. Stapler Junction Gate

10. Lower Transport Rollers

11

B312V101.WMF

11. Alignment Brush Roller

12. Stapler

13. Positioning Roller

14. Pre-stack Roller

15. Stack Feed-out Belt

16. Pre-stack Junction Gate

17. Middle Transport Roller

18. Shift Tray Exit Roller

19. Shift Tray

B312-8

January 8, 2000 DRIVE LAYOUT

1.5 DRIVE LAYOUT

17
16
15
14
13
12

11
10

9

8

18

7

6

B312V106.WMF

1

2

3

4

19

20

5

21

22

1. Shift Tray Exit Plate Motor

2. Shift Tray Exit Plate

3. Shift Tray Exit Roller

4. Shift Motor

5. Shift Tray

6. Alignment Brush Roller

7. Positioning Roller

8. Lower Transport Rollers 2 and 3

9. Lower Transport Motor

10. Middle Transport Roller

11. Lower Transport Roller 1

12. Shift Tray Exit Motor

B312V553.WMF

13. 2nd Entr ance Roller

14. 1st Entrance Roller

15. Upper T ransport Roller

16. Upper T ransport Motor

17. Upper Tr ay Exit Roller

18. Shift Tray Lift Motor

19. Stack Feed-out Motor

20. Jogger Motor

21. Jogger Fence

22. Stack Feed-out Belt

23. Stapler Motor

24. Stapler Rot ation Motor

23

24

Options

B312-9

TRAY AND STAPLER JUNCTION GATE MECHANISM January 8, 2000

2. DETAILED DESCRIPTIONS

2.1 TRAY AND STAPLER JUNCTION GATE MECHANISM

- Upper tray mode -

[A]

[C]

[B]

B312D550.WMF

[D]

- Staple mode -

- Sort/stack mode -

[A]

[A]

[C]

[C]

[B]

B312D562.WMF

[D]

[B]

B312D553.WMF

[D]

Depending on the finishing mode, the copies are directed up, straight through, or
down by the combination of the tray junction gate [A] and stapler junction gate [B].
These gates are controlled by the tray junction gate solenoid [C] and stapler
junction gate solenoid [D].

Upper tray mode

The tray junction gate solenoid turns on. The copies go up to the upper tray.

Sort/stack mode

The tray junction gate solenoid and the stapler junction gate solenoid remain off.
The copies are sent to the shift tray directly.

Staple mode

The tray junction gate solenoid remains off and the stapler junction gate solenoid
turns on. The copies go downwards to the jogger unit.

B312-10

January 8, 2000 PRE-STACK MECHANISM

2.2 PRE-STACK MECHANISM

[C]

[B]

[A]

[D]

[E]

B312V105.WMF

This mechanism improves productivity in staple mode.
During stapling, the copier has to wait. This mechanism reduces the wait by

holding the first two sheets of a job while the previous job is still being stapled. It
only works during the second and subsequent sets of a multi-set copy job.

The pre-stack junction gate solenoid [A] turns on shortly after the 1st sheet of
paper enters the finisher. This opens the junction gate [B], and directs the sheet to
the pre-stack path [C]. (This sheet cannot be fed to the stapler yet, because the
first set is still being stapled.)

When the sheet has passe d the pre-stack roller [D], the pre-stack motor turns off to
stop the sheet until the second copy comes in.

The pre-stack junction gate solenoid turns off again shortly after the trailing edge of
the 1st sheet enters the finisher, and the 2nd sheet is sent to the main paper path
[E].

Then the pre-stack motor turns on again to feed the first copy that is stopped in the
pre-stack path [C], and the first and second copies are delivered together to the
staple tray.

Options

All sheets after the 2nd sheet go to the stapler tray via the main paper path [E].

B312-11

JOGGER UNIT PAPER POSITIONING MECHANISM January 8, 2000

2.3 JOGGER UNIT PAPER POSITIONING MECHANISM

[C]

[F]

[G]

[A]

[D]
[E]

[B]

[D]

[C]

[A]

B312D554.WMF

In staple mode, each sheet of copy paper is vertically and horizontally aligned
when it arrives in the jogger unit.

Vertical Paper Alignment

After the trailing edge of the copy passes the stapler tray entrance sensor [A], the
positioning roller solenoid [B] is energized for 280 ms to push the positioning roller
[C] into contact with the paper. The positioning roller and alignment brush roller [D]
rotate to push the paper back and align the trailing edge of the paper against the
stack stopper [E].

Horizontal Paper Alignment

When the prin t key is pressed, the jogger motor [F] turns on and the jogger fences
[G] move to the waiting position, which is 7 mm wider on both sides than the
selected paper.

When the tr ailing edge of the pap er passes the staple un it entrance sensor, the
jogger motor turns on for approximately 70 ms to move the jogger fences 5 mm
towards the paper. After a short time, the jogger motor turns on again
approximately for 60 ms for the horizontal paper alignment then goes back to the
waiting position.

B312-12

January 8, 2000 STAPLER UNIT MOVEMENT MECHANISM

2.4 STAPLER UNIT MOVEMENT MECHANISM

[A]

[B]

[C]

B312D555.WMF

B312D556.WMF

[B]

Side-to-side:

The stapler motor [A] moves the stapler [B] from side to side. After the start key is
pressed, the stapler moves from its home position to the stapling position.

If two-staple-position mode is selected, the stapler moves to the front stapling
position first, then moves to the rear stapling position. However, for the next copy
set, it staples in the reverse order (at the rear side first then at the front side).

After the job is completed, the stapler moves back to its home position. This is
detected by the stapler HP sensor [C].

[D]

Rotation:

In the oblique staple position mode, the stapler rotation motor [D] rotates the
stapler 45° after it moves to the stapling position.

B312-13

Options

STAPLER January 8, 2000

2.5 STAPLER

[A]

[E]

[B]

[C]

[F]

A697507.WMF

[D]

[G]

[H]

[I]

B312D558.WMF

The staple hammer [A] is driven by the staple hammer motor [B] via gears [C], two
cams [D], and two links [E].

When the aligned copies are brought to the stapling position by the positioning
roller, alignment brush roller and jogger fences, the staple hammer motor starts.
When the cams complete one rotation, th e staple hammer home position sensor
[F] turns on, detecting the end of the stapling operation. The staple hammer motor
then stops.

There are two sensors in the stapler. One is the staple end switch [G] for detecting
staple end conditions (it detects when there is only one sheet of staples left in the
cartridge). The other is the cartridge set switch [H] for detecting whether a staple
cartridge is installed.

When a staple end or no cartridge condition is detected, a message is displa yed
advising the operator to install a staple cartridge. If this condition is detected during
a copy job, the indication will appear, but the copy job will not stop.

The staple cartridge has a clinch area [I], in which jammed staples are left.
Operators can remove the jammed staples from this area.

B312-14

January 8, 2000 FEED-OUT MECHANISM

2.6 FEED-OUT MECHANISM

[D]

[A]

[C]

[C]

[B]

[G]

[H]

[I]

B312D108.WMF

[F]

B312D563.WMF

[E]

After a set of copies has been stapled, the stack feed-out motor [A] starts rotating
to drive the stack feed-out belt [B]. The pawl [C] on the belt lifts the stapled copies
up and transports it to the shift tray exit rollers [D].

The shift tray exit plate [E] is opened until the leading edge of the stapled copies
has passed the shift tray exit rollers by a certain distance. Then the shift tray exit
plate is closed and the stapled copies are fed out to the shift tray [F].

The shift tray exit plate is opened and closed by the shift tray exit plate motor [G]
through a cam [H].

The stack feed-out motor stops for 300 ms until the exit rollers have completely fed
out the stapled copies to the shift tray. This is to prevent the copies from being
pushed out too far on the tray.

Then, the motor turns on again and stops when the pawl actuates the stack feed­out belt home position sensor [I].

There are two pawls on the belt so that the productivity for a smaller number of
copies for a stapled set can be kept high.

B312-15

Options

SHIFT TRAY UP/DOWN MECHANISM January 8, 2000

2.7 SHIFT TRAY UP/DOWN MECHANISM

[D]

[F]

[E]

[A]
[K]

[J]

[I]

[G]

[H]

B312D560.WMF

[B]

[C]

The shift tray lift motor [A] controls the vertical position of the shift tray [B] through
gears and timing belts [C]. When the main switch is turned on, the tray is initialized
at the upper position. The tray is moved up until stack height sensor 1 [D] is de­actuated.

During copying, the actuator feeler [E] gradually rises as the copy stack grows, and
the actuator gradually moves towards stack height sensor 2 [F].

In sort/stack mode, if stack height sensor 2 is actuated for 3 seconds, the shift tray
lift motor lowers the shift tray for 15 ms.

In staple mode, when the stack feed-out motor starts, the tray is moved down until
stack height sensor 1 is actuated and then moved up until stack height sensor 1 is
de-actuated. This corrects the current tray position. Then, the tray is moved down
again until stack height sensor 1 is actuated to make space for the coming set of
copies and then moved up until stack height sensor 1 is de-actuated. This means
the tray lowers earlier in staple mode, to prevent the next copy suddenly exceeding
the space currently available on the tray.

For both modes, the shift tray will rise until stack height sensor 1 is de-actuated
when the user takes the stack of paper from the shift tray.

This machine has two shift tray lower limit sensors 1 [G], 2 [H]. Shift tray lower limit
sensor 1 detects the near lower limit and sensor 2 detects the lower limit. When the
actuator [I] enters sensor 1, a message will be displayed and copying will continue.
When the actuator enters sensor 2, a message will be displayed and copying will
stop.

The shift tray upper limit switch [J] prevents the drive gear from being damaged if
stack height sensor 1 fails. When the shift tray pushes up the shift tray positioning
roller [K], the switch will cut the power to the shift tray lift motor.

B312-16

January 8, 2000 SHIFT TRAY SIDE-TO-SIDE MECHANISM

2.8 SHIFT TRAY SIDE-TO-SIDE MECHANISM

[A]

[D]

[C]

[F]

[E]

[B]

B312D561.WMF

In sort/stack mode, the shift tray [A] moves from side to side to separate the sets of
copies.

The horizontal position of the shift tray is controlled by the shift motor [B] and shift
gear disk [C]. After one set of copies is made and delivered to the shift tray, the
shift motor turns on, driving the shift gear disk and the shaft [D]. The end fence [E]
is positioned by the shaft, creating the side-to-side movement.

When the shift gear disk has rotated 180 degrees (when the shift tray is fully shifted
across), the cut-out in the shift gear disk turns on the shift tray half-turn sensor [F]
and the shift motor stops. The next set of copies is then delivered. The motor turns
on, repeating the same process and moving the tray back to the previous position.

Options

B312-17

PUNCH UNIT DRIVE MECHANISM January 8, 2000

2.9 PUNCH UNIT DRIVE MECHANISM

[C]

[D]

[B]

[A]

B312D551.WMF

The punch unit makes 2 or 3 holes (depending on the type of punch unit) at the
trailing edge of the paper.

The punch unit is driven by the punch motor [A]. The punch motor turns on 78 ms
after the trailing edge of the pape r passes through the entrance sensor [B], and
makes the punch holes.

The home position is detected by the punch HP sensor [C]. When the cut-out on
the punch shaft gear disk [D] enters the punch HP sensor, the punch motor stops.

The punch position is adjusted as follows:

Right to left: SP mode
Front to rear: Spacers

B312-18

January 8, 2000 PUNCH WASTE COLLECTION MECHNISM

2.10 PUNCH WASTE COLLECTION MECHNISM

[B]

[D]

[C]

[A]

B312D552.WMF

The punch waste is collected in the punch waste hopper [A], which is under the
punch unit.

When the punch waste covers the hole [B] in the hopper, the hopper sensor [C]
turns on and a message will be displa yed after the copy job finishes.

The hopper sensor also works as the hopper set sensor. If the punch waste hopper
is not set, the hopper sensor moves away from the hole in the hopper holder [D]
and a message is displayed. This message is the same as for the hopper full
condition.

Options

B312-19

JAM CONDITIONS January 8, 2000

2.11 JAM CONDITIONS

1. The entrance sensor does not turn on within 2.0 s after the copier exit sensor
turns off.

2. The entrance sensor does not turn off within 850 ms after it turns on.

3. The upper tray exit sensor does not turn on within 1,050 ms after the entrance
sensor turns on.

4. The upper tray exit sensor does not turn off within 850 ms after it turns on.

5. In sort/stack mode, the shift tray exit sensor does not turn on within 1,345 ms
after the entrance sensor turns on.

6. In sort/stack mode, the shift tray exit sensor does not turn off within 850 ms
after it turns on.

7. In staple mode, the stapler tray entrance sensor does not turn on within 2,405
ms after the entrance sensor turns on.

8. In staple mode, the stapler tray entrance sensor does not turn off within 850 ms
after it turns on.

9. In staple mode, the stapler tray paper sensor does not turn off within 466
pulses of the stack feed-out motor after it starts.

10. In staple mode, the shift tray exit sensor does not turn off within 1,260 ms after
the stack feed-out motor starts.

B312-20

January 8, 2000 DIP SWITCHES

3. SERVICE TABLES

3.1 DIP SWITCHES

DPS101

1234

0 0 0 0 Default
1 1 1 0 Free run: one staple (rear-oblique)

NOTE:

Do not use any other settings.

Description

3.2 TEST POINTS

No. Label M onitored Signal

TP101 (GND) Ground
TP102 5V 5V
TP103 TXAO TXD
TP104 RXD RXD

3.3 FUSES

No. Function

FU101 Protects 24 V.

B312-21

Options

COVER REPLACEMENT January 8, 2000

4. REPLACEMENT AND ADJUSTMENT

4.1 COVER REPLACEMENT

[B]

[D]

[E]

[F]

Rear Cover

1. Remove the rear cover [A] (3 screws).

Upper Left Cover

[C]

B312R550.WMF

[A]

1. Remove the upper left cover [B] (2 screws).

Upper Cover

1. Rem ove the upper left cove r.

2. Remove the upper cover [C] (2 screws).

Front Door

1. Rem ove the upper left cove r.

2. Remove the upper cover.

3. Remove the upper bracket [D] (1 screw).

4. Remove the front door [E].

Left Front Cover

1. Remove the rear cover.

2. Remove the upper cover.

3. Remove the front door.

4. Remove the left front cover [F] (2 screws).

B312-22

January 8, 2000 COVER REPLACEMENT

Shift Tray

[H]

[J]

[B]

[F]

[K]

[G]

[D]

[E]

B312R550.WMF

[A]

[I]

1. Remove the rear cover [A].

2. While holding the shift tray [B], move the
gear [C] to release the engagement.

3. Lower the shift tray.

4. Remove the shift tray (4 screws).

Lower Left Cover

1. Remove the shift tray.

2. Remove the upper left cover [D].

3. Remove the upper cover [E].

4. Remove the front door [F].

5. Remove the left front cover [G].

6. Remove the lower left cover [H] (4 screws).

Right Cover

1. Remove the right cover [I] (2 screws).

Front Shift Tray Cover

[C]

[B]

B312R101.WMF

Options

1. Remove the front shift tray cover [J] (1 screw).

Rear Shift Tray Cover

1. Remove the rear shift tray cover [K] (1 screw).

B312-23

POSITIONING ROLLER REPLACEMENT January 8, 2000

4.2 POSITIONING ROLLER REPLACEMENT

[B]

[C]

1. Open the front door.

2. Remove the snap ring [A].

3. Release the rubber belt [B].

4. Replace the positioning roller [C].

[A]

B312R551.WMF

B312-24

January 8, 2000 ALIGNMENT BRUSH ROLLER REPLACEMENT

4.3 ALIGNMENT BRUSH ROLLER REPLACEMENT

[D]

[B]

[E]

[C]

[F]

[A]

[H]

[G]

B312R552.WMF

1. Open the front door and pull out the jogger unit.

2. Remove the rear cover.

3. Remove the main board [A] (6 screws, all connectors).

4. Remove a screw [B] and a tension spring [C] for the tension bracket [D], and
release the tension of the timing belt.

5. Remove the front side E-ring [E] and bushing [F].

6. Remove the alignment brush roller assembly.

7. Remove the timing pulley [G] (1 E-ring).

8. Replace the alignment brush roller [H] (1 spacer, 1 bushing).

B312-25

Options

SENSOR REPLACEMNT January 8, 2000

4.4 SENSOR REPLACEMNT

4.4.1 STACK HEIGHT SENSOR 1 AND 2

[A]

[B]

[D]

[C]

1. Rem ove the upper left cove r.

2. Remove the upper cover.

3. Remove the sensor feeler [A] (1 screw, 1 connector).

4. Remove the sensor bracket [B] (1 screw).

5. Replace the stack height sensor 1 [C] or 2 [D].

B312R553.WMF

B312-26

January 8, 2000 SENSOR REPLACEMNT

4.4.2 UPPER TRAY PAPER LIMIT AND EXIT SENSOR

[C]

[D]

[B]

[A]

1. Rem ove the upper left cove r.

2. Remove the upper cover.

Upper Tray Paper Limit Sensor

3. Remove the sensor bracket [A] (1 screw).

4. Replace the upper tray paper limit sensor [B] (1 connector).

Upper Tray Exit Sensor

3. Remove the sensor bracket [C] (1 screw).

4. Replace the upper tray exit sensor [D] (1 connector).

B312R554.WMF

B312-27

Options

SENSOR REPLACEMNT January 8, 2000

4.4.3 SHIFT TRAY EXIT SENSOR

[A]

[B]

B312R102.WMF

[C]

[E]

[D]

B312R103.WMF

1. Remove the rear cover.

2. Rem ove the upper left cove r.

3. Remove the upper cover.

4. Open the front door, unhook the joint [A] and remove the upper exit guide [B] (1
plastic clip, 1 connector).

5. Remove the guide stay [C] (2 screws).

6. Remove the discharge brush [D] (2 screws).

7. Replace the shift tray exit sensor [E] (1 screw, 1 connector).

B312-28

January 8, 2000 SENSOR REPLACEMNT

4.4.4 ENTRANCE AND STAPLER TRAY ENTRANCE SENSOR

[B]

[A]

[D]

[C]

B312R557.WMF

1. Remove the finisher from the copier.

Entrance Sensor

2. Remove the sensor bracket [A] (1 screw).

3. Replace the entrance sensor [B] (1 screw, 1 connector).

Stapler Tray Entrance Sensor

2. Remove the sensor bracket [C] (1 screw).

3. Replace the stapler tray entrance sensor [D] (1 screw, 1 connector).

Options

B312-29

SENSOR REPLACEMNT January 8, 2000

4.4.5 STAPLER ROTATION HP SENSOR

[B]

[A]

[D]

[C]

B312R560.WMF

1. Remove the stapler unit.

2. Remove the screw [A] and rotate the stapler bracket [B].

3. Remove the sensor bracket [C] (1 screw).

4. Replace the stapler rotation HP sensor [D] (1 connector).

B312-30

January 8, 2000 STAPLER REMOVAL

4.5 STAPLER REMOVAL

[A]

1. Open the front door and pull out the jogger unit.

2. Move the stapler to the front.

3. Remove the stapler [A] (1 screw, 1 connector).

B312R559.WMF

B312-31

Options

PUNCH POSITION ADJUSTMENT January 8, 2000

4.6 PUNCH POSITION ADJUSTMENT

B312R558.WMF

Right to left

This position is adjusted by SP modes.

Front to rear

The optional punch units have the following 3 spacers as accessories.
1 mm thickness: 2 pcs

2 mm thickness: 1 pc
The punch position can be adjusted by up to 4 mm by combinations of the 3

spacers.

B312-32

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FINISHER (B312) ELECTRICAL COMPONENT LAYOUT

1

42

41

40

2

13

3

4
5

6

29

28

7
8

27

9
10

26

25

11

12

30

31

32

33

34

35

36

39

37

38

14

15

16

17

18
19

20
21

22
23

24

Symbol Name

Motors

M1
M2

M3 Jogger 31 J13
M4 Stapler 35 K13

M5
M6
M7

M8 Shift Tray Exit 2 E13

M9 Shift 25 G13
M10 Shift Tray Lift 1 D13
M11 Punch 19 S3
M12 Pre-stack 7 O13
M13 Shift Tray Exit

Sensors

S1 Entrance 22 D3
S2

S3
S4

S5 Stapler HP 38 M3
S6

S7
S8

S9 Shift Tray Exit 27 G3
S10 Stack Height 1 29 H3
S11 Stack Height 2 28 H3

S12
S13
S14
S15
S16

S17 Hopper 21 S2
S18 Punch HP 20 S2

S19

Switches

SW1
SW2

SW3 Staple End 39 M13
SW4 Cartridge Set 40 M13

Solenoids

SOL1
SOL2
SOL3
SOL4

PCBs

PCB1 Main 8 T7
PCB2 Punch 18 P2

Upper
Transport
Lower
Transport

Stapler
Rotation
Staple
Hammer
Stack Feed­out

Plate

Stapler Tray
Entrance
Jogger Fence
HP
Stapler Tray
Paper

Stapler
Rotation HP
Staple
Hammer HP
Stack Feed­out Belt HP

Upper Tray
Exit
Upper Tray
Paper Limit
Shift Tray
Half-turn
Shift Tray
Lower Limit 1
Shift Tray
Lower Limit 2

Shift Tray Exit
Plate HP

Front Door
Safety
Shift Tray
Upper Limit

Tray Junction
Gate
Stapler
Junction Gate
Positioning
Roller
Pre-stack
Junction Gate

Index

No.

4 B13
10 C13

36 L13
42 M13
30 F13

16 P13

24 E4
32 L3
34 L3

37 N3
41 N12
33 K13

14 E3
13 F3
26 J3
11 I3
12 J3

15 O3

23 C3
17 H13

3 D13
5 H13

9 I13

6 P13

P to P