Konica Minolta SF-101, OT-101 User Manual

SERVICE MANUAL

Models

SF-101

(OT-101)

JANUARY 2004

CSM-SF101

KONICA MINOLTA BUSINESS SOLUTIONS U.S.A., INC.

SF-101 (OT-101)

SERVICE MANUAL

JANUARY 2004

Used on Konica Models

7255/7272

IMPORTANT NOTICE

Because of the possible hazards to an inexperienced
person servicing this equipment, as well as the risk of
damage to the equipment, Konica Minolta Business
Solutions U.S.A., Inc. strongly recommends that all
servicing be performed by Konica-trained service tech­nicians only.

Changes may have been made to this equipment to
improve its performance after this service manual was
printed. Accordingly, Konica Minolta Business Solu­tions U.S.A., Inc., makes no representations or war­ranties, either expressed or implied, that the informa­tion contained in this service manual is complete or
accurate. It is understood that the user of this manual
must assume all risks or personal injury and/or dam­age to the equipment while servicing the equipment for
which this service manual is intended.

Corporate Publishing Department

© 2004, KONICA MINOLTA BUSINESS SOLUTIONS U.S.A., INC.

All rights reserved.

Printed in U.S.A.

SAFETY WARNINGS

[1] Modifications Not Authorized by

Konica Minolta

Konica Minolta equipment is renowned for their high
reliability. This reliability is achieved through high-quality
design and a solid service network.

Unauthorized modifications involve a high risk of degrad­ing performance and safety. Such modifications are there­fore strictly prohibited. The points listed below are not
exhaustive, but they illustrate the reasoning behind this
policy.

PROHIBITED ACTIONS :

(1) Using extension cables or a different power cord

than specified by Konica Minolta.

(2) Using other fuses than specified by Konica

Minolta. Safety will not be assured, leading to a
risk of fire and injury.

(3) Disabling fuses or bridging fuse terminals with

wire, metal clips, solder or similar. (This applies

also to thermal fuses.)
(4) Removing air filters (except for replacement).
(5) Disabling relay functions (such as wedging pa-

per between relay contacts, etc.).
(6) Disabling safety functions (interlocks, safety cir-

cuits, etc.). Safety will not be assured, leading to

a risk of fire and injury.
(7) Performing actions to equipment not described

in the instruction manual or the service hand-

book.
(8) Using parts other than specified by Konica

Minolta.

[2] Checkpoints When Performing On-

site Service

Konica Minolta equipment is extensively tested before
shipping, to ensure that all applicable safety standards
are met, in order to protect the customer and customer
engineer from the risk of injury. However, in daily use, any
electrical equipment may be subject to parts wear and
eventual failure. In order to maintain safety and reliability,
the customer engineer must perform regular safety checks.

(3) Be sure to disconnect the power cord of the

equipment from the AC outlet.
Simply turning off the power switch is not suffi­cient, because paper feed units or other electri­cal equipment may be powered also when the
power switch is turned off.

(4) Proceed with special care when performing op-

eration checks or adjustment while the unit is
powered. When carrying out operation checks or
adjustment while external covers are removed,
the risk of electrical shock exists when touching
parts which carry high voltage or electrical charge.
The risk of injury exists when touching moving
parts such as gears or chains.

2. Safety Checkpoints

The following list is not exhaustive, but it includes actions
which must be carried out at every on-site service.

CAUTION:

(1) Check external covers and the frame for sharp

edges, burrs, or nicks.

(2) Check external covers and hinges for loosening

or damage.
(3) Check wiring for squeezing or damage.
(4) Check power cord for insulation problems (con-

ductor must not be exposed).
(5) Check power cord and cable ties etc. for loosen-

ing from frame.

WARNING:

(1) Verify that the equipment is properly grounded. If

a problem is detected, establish a proper ground

connection.
(2) Connecting the ground lead to an improper point

such as listed below results in a risk of explosion

and electric shock.

Unsuitable ground points:

- Gas pipe

- Lightning rod

- Telephone line ground

- Plastic water pipe or water pipe or faucet that
has not been approved by authorities for
grounding use

1. Advance Preparation for Safety Checks

CAUTION:

(1) Wear clothing that facilitates work and is de-

signed for safety.

(2) Carry out all procedures carefully to prevent in-

jury.

3. Description of Safety Checks

CAUTION:

(1) Before performing safety check work, read all

relevant documentation (service handbook, tech­nical notices, etc.) and proceed according to the
prescribed procedure, using only the prescribed
tools. Do not carry out any adjustments not
described in the documentation.

(2) If the power cord is damaged, replace it only with

the specified power cord. If the power cord insu­lation has been damaged and there are exposed
sections, short- circuits and overheating may
occur, leading to a serious fire risk.

(3) Do not route the power cord so that it can be

stepped on or pinched. Otherwise overheating
may occur, leading to a serious fire risk.

(4) When disconnecting any cables, always grasp

the connector and not the cable (especially in the
case of AC and high-voltage leads).

(5) Carefully remove all toner remnants from electri-

cal parts, electrodes, etc.

(6) Make sure that wiring cannot come into contact

with sharp edges, burrs, or other pointed parts.

(7) Double-check to make sure that all screws, com-

ponents, wiring, connectors, etc. that were re­moved for safety check maintenance have been
reinstalled in the original location. (Pay special
attention to forgotten connectors, pinched cables,
forgotten screws, etc.)

(8) When installation and preventive maintenance,

verify that the power cord has been securely
plugged into the AC outlet. Contact problems
may lead to increased resistance, overheating,
and the risk of fire.

WARNING:

Before disassembling or adjusting the equip­ment, make sure that the power cord has been
disconnected.

[4] Measures to Take in Case of an

Accident

(1) If an accident has occurred, the distributor who has

been notified first must immediately take emergency
measures to provide relief to affected persons and to
prevent further damage.

(2) If a report of a serious accident has been received

from a customer, an on-site evaluation must be
carried out quickly and Konica Minolta must be
notified.

(3) To determine the cause of the accident, conditions

and materials must be recorded through direct on­site checks, in accordance with instructions issued
by Konica Minolta.

(4) For reports and measures concerning accidents,

consult your superior, and follow the regulations set
in "Standards for the Control Program for Measures
Against Electrical Equipment Accidents".

[5] Conclusion

(1) Safety of users and customer engineers depends

highly on accurate maintenance and administration.
Therefore, safety can be maintained by the appropri­ate by the proper daily service work conducted by the
customer engineer.

(2) When performing service, equipment on the site

must be tested for safety. The customer engineer
must verify the safety of parts and ensure appropri­ate management of the equipment.

[3]

Handling of Materials for Servicing

CAUTION: Alcohol-based and acetone- based

cleaners are highly flammable and
must be handled with care. When
using these materials for cleaning
parts, observe the following precau-

tions.
(1) Disconnect the power cord from the AC outlet.
(2) Use only a small amount of cleaner at a time and

take care not to spill any liquid. If this happens,
immediately wipe it off.

(3) Perform cleaning only in an environment where

sufficient ventilation is assured. Breathing large
quantities of organic solvents can lead to dis­comfort.

(4) Do not replace the cover or turn the unit on before

any solvent remnants on the cleaned parts have
fully evaporated.

CONTENTS

CONTENTS

SAFETY AND IMPORTANT WARNING ITEMS

Refer to the 7155/7165/7255/7272 service manual on page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-1

I OUTLINE

1. SF-101 PRODUCT SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

2. CENTER CROSS-SECTIONAL DRAWING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

3. DRIVE SYSTEM DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

3.1 Paper Conveyance Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

3.2 Shift Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

3.3 Tray Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

4. PAPER CONVEYANCE PROCESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

4.1 Non-Sort Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

4.2 Sort/Group Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

II UNIT EXPLANATION

1. EXTERNAL SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

1.1 Composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

1.2 Mechanisms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2. PAPER CONVEYANCE SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2.1 Composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2.2 Mechanisms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2.3 Control of M701 (conveyance motor) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

2.3.1 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

2.3.2 Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

3. SHIFT SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

3.1 Composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

3.2 Mechanisms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

3.3 Control of M703 (shift motor). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

3.3.1 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

3.3.2 Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

4. TRAY SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

4.1 Composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

4.2 Mechanisms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

4.3 Control of M702 (Tray up/down motor) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

4.3.1 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

4.3.2 Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

I OUTLINEII UNIT EXPLANATIONIII DIS./ASSEMBLY

III DISASSEMBLY/ASSEMBLY

1. EXTERNAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

1.1 Removing/Reinstalling the Shift Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

1.2 Removing/Reinstalling the Cover/F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

1.3 Removing/Reinstalling the Cover/R. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

2. MAIN BODY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

2.1 Removing/Reinstalling the Main Body Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

i

CONTENTS

I OUTLINEII UNIT EXPLANATIONIII DIS./ASSEMBLY

Blank page

ii

1

OUTLINE

1 OUTLINE

1 OUTLINE

Blank page

IOUTLINE

1. SF-101 PRODUCT SPECIFICATIONS

SF-101 PRODUCT SPECIFICATIONS

A. Type

Type: Delivery tray with offset functions

B. Functions

Straight paper ejection: Ejects papers to the shift tray without requiring any procedure

Offset paper ejection: Ejects papers to the shift tray, making it move 30mm for each copy

Type of paper: Same as the main body.

Paper size: AB series: A3/B4/A4/A4R/B5/B5R/A5/A5R/B6/A6

Inch series:12x18/11x17/8.5x14/8.5x11/8.5x11R/5.5x8.5/5.5x8.5R

Capacity of ejected papers: B5/B5R/A4/A4R/8.5x11/8.5x11R: 1250 sheets

A5R/B4/A3/8.5x14/11x17: 500 sheets

B6/A6: 100 sheets

Paper curling: Plain paper: 15mm or less

C. Machine Data

Power source: 24VDC (supplied from the main body)

Power consumption: 48VA or less

Weight: 31 lb or less

Machine dimensions:

I OUTLINE

500 483

25

1-1

470

sf1011001

SF-101 PRODUCT SPECIFICATIONS

D. Maintenance

Maintenance: Same as the main body.

I OUTLINE

E. Operating Environment

Temperature: 50°F to 90°F

Humidity: 15 to 80%RH

Note:

• The information herein may be subject to change for improvement without notice.

1-2

CENTER CROSS-SECTIONAL DRAWING

2. CENTER CROSS-SECTIONAL DRAWING

Shift tray

Exit roller

Reverse roller

I OUTLINE

Conveyance roller

Up/down belt

sf1011002

1-3

DRIVE SYSTEM DIAGRAM

3. DRIVE SYSTEM DIAGRAM

3.1 Paper Conveyance Drive

I OUTLINE

3.2 Shift Drive

Exit follower roller

Exit roller

Reverse roller

Timing belt

Conveyance follower
roller

Conveyance roller

M701
(Conveyance motor)

sf1011003

Shift tray plate

Shift tray

Crankshaft

Worm wheel

Timing belt

M703 (Shift motor)

sf1011004

1-4

3.3 Tray Drive

DRIVE SYSTEM DIAGRAM

Shift tray

M702 (Tray up/down motor)

I OUTLINE

Up/down belt

sf1011005

1-5

PAPER CONVEYANCE PROCESS

4. PAPER CONVEYANCE PROCESS

4.1 Non-Sort Mode

Conveys and ejects the papers ejected from the main body to the shift tray.

I OUTLINE

4.2 Sort/Group Mode

Sets the shift tray to the position it is moved 30mm and conveys and ejects the papers ejected from the

main body.

30mm

Shift tray

sf1011006

1-6

2

UNIT EXPLANATION

2 UNIT EXPLANATION

2 UNIT EXPLANATION

Blank page

II UNIT EXPLANATION

1. EXTERNAL SECTION

1.1 Composition

EXTERNAL SECTION

Cover / R

Shift tray

Conveyance cover

Cover /F

sf1012001

1.2 Mechanism

Mechanism Method

Clearing paper jam *1 Open/Close of conveyance cover

*1 For the paper jammed at the paper conveyance section, hold the knob and open the conveyance cover

to the direction of the arrow to remove the paper.

II UNIT EXPLANATION

Knob

Conveyance cover

sf1012002

2-1

PAPER CONVEYANCE SECTION

2. PAPER CONVEYANCE SECTION

2.1 Composition

II UNIT EXPLANATION

SW701

Conveyance follower roller

M701

Exit roller

Reverse roller

Timing belt

Exit follower roller

PS701

2.2 Mechanism

Mechanism Method

Conveyance Belt-driven by conveyance motor

Reverse roller *1 Oscillating system driven by gear /sponge roller

Conveyance roller

sf1012003

*1 Reverse roller, made of sponge, aligns the paper stack in the vertical direction of the ejected papers by

rotating opposite in the direction to the ejection due to the gear drive from the exit roller.

To absorb the up/down movements during the ascent/descent operations of shift tray, up and down

oscillation is allowed mainly for the shaft of exit roller.

Reverse roller

Exit roller

Shift tray (bracket parts)

sf1012004

2-2

2.3 Control of M701 (Conveyance Motor)

24V

24V

M701 DRV A

24V

PGND

PGND

FGND

24V IN

GND

GND

M701 DRV A

M701 DRV B

M701 DRV B

PAPER CONVEYANCE SECTION

M701

MTXD

SGND

MCTS

MRXD

SGND

MRTS1

MAIN BODY

RXD

GND

RTS

TXD

GND

CTS

GND

COVER SW

GND

PS701 IN

5V

SFCB

SW701

PS701

sf1012005

M701 (conveyance motor) uses DC stepping motor driven by 24V and is controlled by SFCB (SF control

board).

The related signals are PS701 (conveyance sensor) and SW701 (conveyance cover SW).

2.3.1 Operation

A. Open/Close detection for conveyance cover

The conveyance drive control of SF is started on the start ON signal of the main body, though, when

SW701 (Conveyance cover SW) is OFF, an error information is sent to the main body PRCB and the con-

trol is not started.

B. Control of M701 (conveyance motor)

During the single-sided copy, M701 starts to rotate at low speed on the start ON signal of the main body,

switches itself to high speed on the paper eject ON signal of the main body, and then switches itself to low

speed after a specified time has passed since the paper eject signal of the main body turns OFF.

During the two-sided copy, M701 starts to rotate at low speed on the start ON signal of the main body,

switches itself to medium speed on the paper eject ON signal of the main body, and switches itself to high

speed when the paper eject signal of the main body turns OFF, and then switches itself to low speed after

a specified time.

M701 stops after a specified time has passed since PS701 (conveyance sensor) detected the trailing edge

of final paper.

II UNIT EXPLANATION

2.3.2 Signals

A. SFCB input signals

(1) RXD (MAIN BODY → SFCB)

Serial data line to transmit the operating status of the main body CB to SFCB

(2) CTS (MAIN BODY → SFCB)

Signal permitting transmission from the main body to SF

2-3

PAPER CONVEYANCE SECTION

(3) COVER SW (SW701 → SFCB)

(4) PS701 IN (PS701 → SFCB)

B. Output signals

(1) RTS (SFCB → MAIN BODY)

(2) TXD (SFCB → MAIN BODY)

(3) M701 DRV A, A

(4) M701 DRV B, B

II UNIT EXPLANATION

Open/Close detection for conveyance cover

[OPEN]: Conveyance cover is open

[CLOSE]: Conveyance cover is closed

Detection signal of paper passage

[H]: Detects paper

[L]: No paper

Signal permitting transmission from SF to the main body

Serial data line to transmit the operating status of SF to the main body CB

(M701 → SFCB)

Pulse signal for A-phase drive control of M701

(M701 → SFCB)

Pulse signal for B-phase drive control of M701

2-4

3. SHIFT SECTION

3.1 Composition

SHIFT SECTION

HP2

Shift tray

Shift table

Shift tray plate

HP1

PS702

Worm gear

3.2 Mechanism

Mechanism Method

Shift *1 Cam-driven by shift motor

Shift table *2 Parallel roller

Crankshaft

Worm wheel

Timing belt

II UNIT EXPLANATION

M703

sf1012006

*1 The crankshaft attached to the worm wheel is driven via the timing belt and worm gear that are

installed to the shaft of M703 (shift motor), and the shift tray moves 30mm back and forth via the shift

tray plate. The worm wheel is integrated with the disk-shaped actuator, which has two home positions

(HP1 and HP2) detected by PS702 (shift HP sensor).

2-5

SHIFT SECTION

30mm

II UNIT EXPLANATION

HP1

Shift cam shaft

PS702

Worm gear

Timing belt

HP2

Worm wheel

HP2HP1

M703

sf1012007

*2 Shift tray performs the tray up/down movements in addition to the shift movement by M703 (shift

motor). To facilitate the shift movement without being interfered with by the tray up/down movements,

the shift table, which moves freely to right/left and forward/backward directions, supports the weight of

the tray and the ejected papers. The shift tray is used with parallel rollers.

Shift table

Parallel roller

sf1012008

2-6

3.3 Control of M703 (Shift Motor)

SHIFT SECTION

M703 DRV

M703 24V

GND

PS702 IN

5V

MAIN BODY

M703

PS702

sf1012009

During the Sort/Group mode, the offset of papers is performed by M703 (shift motor).

M703 is used with 24V driven DC motor and controlled by SFCB (SF control board).

The related signal is PS702 (shift HP sensor).

3.3.1 Operation

During the Sort/Group mode, M703 (shift motor) is turned ON due to the shift requiring signal from the

main body, makes the tray start performing the shift movement back (HP1) and forth (HP2), and then is

turned OFF due to the HP detection of PS702 (shift HP sensor).

After finishing the exit of final paper, M703 makes a final shift movement to the other HP position (HP1 or

HP2) and prepares itself for the next coping.

3.3.2 Signals

A. SFCB input signal

(1) PS702 IN (PS702 → SFCB)

Shift position detection signal

[H]: Detects HP

[L]: Other than HP

B. Output signal

(1) M703 DRV (SFCB → M702)

Drive control signal for M702

[L]: M702 ON

[H]: M702 OFF

II UNIT EXPLANATION

2-7

TRAY SECTION

4. TRAY SECTION

4.1 Composition

II UNIT EXPLANATION

Shift tray

PS703

SW702

Up/down belt

PS704

M702

Up/down pulley /L

sf1012010

4.2 Mechanism

Mechanism Method

Tray up/down *1 Belt-driven by tray up/down motor

Paper detection *2 Photosensor / microswitch

*1 The up/down belt is driven by the worm gear installed to the shaft of M702 (tray up/down motor), which

hoists and lowers the tray. When the up/down pulley /L rotates clockwise viewed from the front, the

shift tray is raised, and when it rotates counterclockwise, it is lowered.

2-8

TRAY SECTION

*2 Because of PS703 (tray upper limit sensor), the distance between the exit slot and the top surface of

the paper ejected onto the shift tray is maintained constant to prevent the papers from being ejected

unevenly.

SW702 (tray upper limit SW), of which actuator is integrated mechanically with PS702 actuator, stops

M702 (tray up/down motor) when the shift tray exceeds PS703and rises abnormally. PS704 (tray lower

limit sensor) detects the lowermost limit of the tray.

Shift tray

II UNIT EXPLANATION

PS703

4.3 Control of M702 (Tray Up/Down Motor)

M702 DRV-F

M702 DRV-R

TRAY SW1
TRAY SW2

PS703 IN

PS701 IN

SW702

sf1012011

M702

SW702

GND

PS703

5V

GND

PS704

5V

MAIN BODY

sf1012012

The up/down movements of the tray is performed by rotating M702 (tray up/down motor) normally or

reversely.

M702 is used with 24V driven DC motor and controlled by SFCB (SF control board).

The related signals are PS703 (tray upper limit sensor), PS704 (tray lower limit sensor), and SW 702 (tray

upper limit SW).

2-9

TRAY SECTION

4.3.1 Operation

II UNIT EXPLANATION

4.3.2 Signals

A. Other than postcard

Because of the start ON signal of the main body, M702 (tray up/down motor) lowers the tray until PS703

(tray upper limit sensor) turns OFF, and, after a specified time, raises it until PS703 turns ON to stop it.

During copying, M702 is driven after an odd-numbered paper is ejected.

B. Postcard

Because of the start ON signal of the main body, M702 (tray up/down motor) lowers the tray until PS703

(tray upper limit sensor) turns OFF, and, after a specified time, raises it until PS703 turns ON to stop it.

Because of the paper eject signal from the main body for the first paper, M702 lowers the tray and stops it

after it has been driven for a specified time, setting it in its position 50mm down.

During copying, M702 is driven after an odd-numbered paper is ejected.

C. Full-load detection

PS704 (tray lower limit sensor) turns ON and stops M702 (tray up/down motor), producing the message

information to the main body PRCB.

D. Abnormal ascent detection

When SW702 (tray upper limit SW) turns OFF because of the abnormal ascent of the tray, M702 (tray up/

down motor) makes a stop.

A. SFCB input signals

(1) PS703 IN (PS703 → SFCB)

Detection signal of tray upper limit position

[H]: Other than upper limit position

[L]: Upper limit position is detected

(2) PS704 IN (PS704 → SFCB)

Detection signal of tray lower limit position

[H]: Lower limit position is detected

[L]: Other than lower limit position

(3) TRAY SW2 (SW702 → SFCB)

Detection signal of abnormal position exceeding the tray upper limit

[OPEN]: Upper limit abnormality is detected

[CLOSE]: Normal time

B. Output signals

(1) M702 DRV-F (SFCB → M702)

Forward-drive control signal for M702

(2) M702 DRV-R (SFCB → M702)

Reversed-drive control signal for M702

2-10

3

DISASSEMBLY/ASSEMBLY

3 DIS./ASSEMBL Y

This section explains how to disassemble and reassemble the machine.
When disassembling and reassembling the machine, follow the precau­tions given below.

3 DIS./ASSEMBL Y

1. Be sure the power cord has been unplugged from the wall outlet.

2. The di sassembled parts must be reassembled fol lowing the di sas­sembly procedure in reverse unless otherwise specified.

3. Care shoul d be taken not t o lose small parts. Care should also be
taken not to install small parts in wrong places.

4. Do not oper ate the machine before inst alling all the disassembled
parts co mpletely .

5. Removal of some screws is pr ohibited in this section. Never loosen
them.

III DISASSEMBLY/ASSEMBLY

1. EXTERNAL

1.1 Removing/Reinstalling the Shift Tray

Caution:

• Make sure power cord of the main unit has

been unplugged from the wall outlet.

A. Procedure

1. Remove the screw [1] and detach the shift tray

[2] to the direction of the arrow so that its claw

[3] is unhooked through the attachment hole [4].

EXTERNAL

[2][1]

[4] [3]

III DIS./ASSEMBLY

sf1013001

3-1

EXTERNAL

2. Reinstall the above parts following the removal

steps in reverse.

Caution:

• Make sure that the claw [2] of the shift tray is

inserted into the notch of the shift tray plate

[1] and they are securely engaged.

[2][1]

sf1013002

III DIS./ASSEMBLY

3-2

1.2 Removing/Reinstalling the Cover/F

Caution:

• Make sure power cord of the main unit has

been unplugged from the wall outlet.

A. Procedure

1. Open the conveyance cover [1], remove the

screw [2], tilt the upper portion of the cover/F [3]

to the direction of the arrow, and then detach the

cover to the direction of the arrow so that its

claw [4] is unhooked through the attachment

hole [5].

2. Reinstall the above parts following the removal

steps in reverse.

[1]

EXTERNAL

[2]

[3]

III DIS./ASSEMBLY

[5]

[4]

sf1013003

3-3

EXTERNAL

1.3 Removing/Reinstalling the Cover/R

Caution:

• Make sure power cord of the main unit has

been unplugged from the wall outlet.

A. Procedure

1. Remove the plastic cover (transparent) [1] and

two screws [2] to detach the connector cover [3].

[1][2]

[3]

III DIS./ASSEMBLY

sf1013004

3-4

2. Remove the screw [1] and unhook the claw [2]

to remove the connector cover bracket [3].

EXTERNAL

[1][3]

[2]

III DIS./ASSEMBLY

sf1013005

3-5

EXTERNAL

3. Open the conveyance cover [1], remove two

screws [2], tilt the upper portion of the cover/R

[3] to the direction of the arrow, and then detach

the cover to the direction of the arrow so that its

claw [4] is unhooked through the attachment

hole [5].

4. Reinstall the above parts following the removal

steps in reverse.

[1]

[3]

[2]

[5]

III DIS./ASSEMBLY

[4]

sf1013006

3-6

2. MAIN BODY

2.1 Removing/Reinstalling the Main Body Unit

Caution:

• Make sure power cord of the main unit has

been unplugged from the wall outlet.

A. Procedure

1. Remove the shift tray.

2. Remove the plastic cover (transparent) [1] and

two screws [2] to detach the connector cover [3].

MAIN BODY

[1][2]

[3]

sf1013007

III DIS./ASSEMBLY

3-7

MAIN BODY

3. Remove the screw [1], unhook the claw [2] to

remove the connector cover bracket [3], and

then disconnect the connectors CN200 [4] and

CN201 [5].

[1]

[3][5][2]

III DIS./ASSEMBLY

[4]

sf1013008

3-8

4. Remove the screw [1], displace the unit [2]

upward slightly to release the hook [4] from the

hole [3], tilt the upper portion of the unit to the

direction of the arrow, and then detach the unit

[2] by unhooking the claw [6] through the lower

hole [5].

MAIN BODY

[3]

[4]

[2]

[1]

[5]

III DIS./ASSEMBLY

[6]

sf1013009

3-9

MAIN BODY

III DIS./ASSEMBLY

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3-10