Kyocera DP-420, PF-420, DF-420, JS-420 Service manual

DP-420/PF-420

DF-420/JS-420

FAX System (R)

SERVICE

MANUAL

Published in May 2009

3MZSM060

First Edition

CAUTION

RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE. DISPOSE OF
USED BATTERIES ACCORDING TO THE INSTRUCTIONS.

It may be illegal to dispose of this battery into the municipal waste stream. Check with your local
solid waste officials for details in your area for proper disposal.

ATTENTION

IL Y A UN RISQUE D’EXPLOSION SI LA BATTERIE EST REMPLACEE PAR UN MODELE DE
TYPE INCORRECT. METTRE AU REBUT LES BATTERIES UTILISEES SELON LES INSTRUC­TIONS DONNEES.

Il peut être illégal de jeter les batteries dans des eaux d’égout municipales. Vérifiez avec les fonc­tionnaires municipaux de votre région pour les détails concernant des déchets solides et une mise
au rebut appropriée.

Revision history

Revision Date Replaced pages Remarks

This page is intentionally left blank.

Safety precautions

This booklet provides safety warnings and precautions for our service personnel to ensure the safety of
their customers, their machines as well as themselves during maintenance activities. Service personnel
are advised to read this booklet carefully to familiarize themselves with the warnings and precautions
described here before engaging in maintenance activities.

Safety warnings and precautions

Various symbols are used to protect our service personnel and customers from physical danger and
to prevent damage to their property. These symbols are described below:

DANGER: High risk of serious bodily injury or death may result from insufficient attention to or incorrect

compliance with warning messages using this symbol.

WARNING: Serious bodily injury or death may result from insufficient attention to or incorrect compliance

with warning messages using this symbol.

CAUTION: Bodily injury or damage to property may result from insufficient attention to or incorrect

compliance with warning messages using this symbol.

Symbols

The triangle ( ) symbol indicates a warning including danger and caution. The specific point
of attention is shown inside the symbol.

General warning.

Warning of risk of electric shock.

Warning of high temperature.

indicates a prohibited action. The specific prohibition is shown inside the symbol.

General prohibited action.

Disassembly prohibited.

indicates that action is required. The specific action required is shown inside the symbol.

General action required.

Remove the power plug from the wall outlet.

Always ground the copier.

1.Installation Precautions

WARNING

• Do not use a power supply with a voltage other than that specified. Avoid multiple connections to
one outlet: they may cause fire or electric shock. When using an extension cable, always check

that it is adequate for the rated current. .............................................................................................

• Connect the ground wire to a suitable grounding point. Not grounding the copier may cause fire or
electric shock. Connecting the earth wire to an object not approved for the purpose may cause
explosion or electric shock. Never connect the ground cable to any of the following: gas pipes,
lightning rods, ground cables for telephone lines and water pipes or faucets not approved by the

proper authorities. ............................................................................................................................

CAUTION:

• Do not place the copier on an infirm or angled surface: the copier may tip over, causing injury. .......

• Do not install the copier in a humid or dusty place. This may cause fire or electric shock. ................

• Do not install the copier near a radiator, heater, other heat source or near flammable material.

This may cause fire. .........................................................................................................................

• Allow sufficient space around the copier to allow the ventilation grills to keep the machine as cool

as possible. Insufficient ventilation may cause heat buildup and poor copying performance. ...........

• Always handle the machine by the correct locations when moving it. ...............................................

• Always use anti-toppling and locking devices on copiers so equipped. Failure to do this may cause

the copier to move unexpectedly or topple, leading to injury. ...........................................................

• Avoid inhaling toner or developer excessively. Protect the eyes. If toner or developer is acciden­tally ingested, drink a lot of water to dilute it in the stomach and obtain medical attention immedi­ately. If it gets into the eyes, rinse immediately with copious amounts of water and obtain medical

attention. ......................................................................................................................................

• Advice customers that they must always follow the safety warnings and precautions in the copier’s

instruction handbook. .....................................................................................................................

2.Precautions for Maintenance

WARNING

• Always remove the power plug from the wall outlet before starting machine disassembly. ...............

• Always follow the procedures for maintenance described in the service manual and other related

brochures. .......................................................................................................................................

• Under no circumstances attempt to bypass or disable safety features including safety mechanisms

and protective circuits. .....................................................................................................................

• Always use parts having the correct specifications. ..........................................................................

• Always use the thermostat or thermal fuse specified in the service manual or other related bro­chure when replacing them. Using a piece of wire, for example, could lead to fire or other serious

accident. ..........................................................................................................................................

• When the service manual or other serious brochure specifies a distance or gap for installation of a

part, always use the correct scale and measure carefully. ................................................................

• Always check that the copier is correctly connected to an outlet with a ground connection. .............

• Check that the power cable covering is free of damage. Check that the power plug is dust-free. If it

is dirty, clean it to remove the risk of fire or electric shock. ..............................................................

• Never attempt to disassemble the optical unit in machines using lasers. Leaking laser light may

damage eyesight. ...........................................................................................................................

• Handle the charger sections with care. They are charged to high potentials and may cause electric

shock if handled improperly. ............................................................................................................

CAUTION

• Wear safe clothing. If wearing loose clothing or accessories such as ties, make sure they are

safely secured so they will not be caught in rotating sections. ..........................................................

• Use utmost caution when working on a powered machine. Keep away from chains and belts. ........

• Handle the fixing section with care to avoid burns as it can be extremely hot. ..................................

• Check that the fixing unit thermistor, heat and press rollers are clean. Dirt on them can cause

abnormally high temperatures. ........................................................................................................

• Do not remove the ozone filter, if any, from the copier except for routine replacement. ....................

• Do not pull on the AC power cord or connector wires on high-voltage components when removing

them; always hold the plug itself. .....................................................................................................

• Do not route the power cable where it may be stood on or trapped. If necessary, protect it with a

cable cover or other appropriate item. .............................................................................................

• Treat the ends of the wire carefully when installing a new charger wire to avoid electric leaks. ........

• Remove toner completely from electronic components. ...................................................................

• Run wire harnesses carefully so that wires will not be trapped or damaged. ....................................

• After maintenance, always check that all the parts, screws, connectors and wires that were
removed, have been refitted correctly. Special attention should be paid to any forgotten connector,

trapped wire and missing screws. ...................................................................................................

• Check that all the caution labels that should be present on the machine according to the instruction

handbook are clean and not peeling. Replace with new ones if necessary. ......................................

• Handle greases and solvents with care by following the instructions below: .....................................

· Use only a small amount of solvent at a time, being careful not to spill. Wipe spills off completely.

· Ventilate the room well while using grease or solvents.

· Allow applied solvents to evaporate completely before refitting the covers or turning the power
switch on.

· Always wash hands afterwards.

• Never dispose of toner or toner bottles in fire. Toner may cause sparks when exposed directly to

fire in a furnace, etc. .......................................................................................................................

• Should smoke be seen coming from the copier, remove the power plug from the wall outlet imme-

diately. ............................................................................................................................................

3.Miscellaneous

WARNING

• Never attempt to heat the drum or expose it to any organic solvents such as alcohol, other than the

specified refiner; it may generate toxic gas. .....................................................................................

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DP-420

First Edition

CONTENTS

1-1 Specifications

1-1-1 Specifications..........................................................................................................................................1-1-1

1-1-2 Parts names............................................................................................................................................1-1-2

1-1-3 Machine cross section ............................................................................................................................1-1-3

1-2 Installation

1-2-1 Installation environment ..........................................................................................................................1-2-1

1-2-2 Unpacking ...............................................................................................................................................1-2-2

(1) Unpacking .........................................................................................................................................1-2-2

(2) Removing the tapes and the spacer..................................................................................................1-2-3

1-3 Maintenance Mode

1-3-1 Maintenance mode (operation panel is a 7-segment type) .....................................................................1-3-1

(1) Executing a maintenance item ..........................................................................................................1-3-1

(2) Maintenance mode item list...............................................................................................................1-3-2

(3) Contents of maintenance mode items...............................................................................................1-3-3

1-3-2 Maintenance mode (operation panel is an LCD type)...........................................................................1-3-15

(1) Executing a maintenance item ........................................................................................................1-3-15

(2) Maintenance mode item list.............................................................................................................1-3-16

(3) Contents of maintenance mode items.............................................................................................1-3-17

3MX

1-4 Troubleshooting

1-4-1 Original misfeed detection ......................................................................................................................1-4-1

(1) Original misfeed indication ................................................................................................................1-4-1

(2) Original misfeed detection conditions................................................................................................1-4-1

(3) Paper misfeeds .................................................................................................................................1-4-3

1-4-2 Self-diagnosis .........................................................................................................................................1-4-4

(1) Self-diagnostic function (operation panel is a 7-segment type).........................................................1-4-4

(2) Self diagnostic codes (operation panel is a 7-segment type)............................................................1-4-4

(3) Self-diagnostic function (operation panel is an LCD type) ................................................................1-4-4

(4) Self diagnostic codes (operation panel is an LCD type)....................................................................1-4-4

1-4-3 Electric problems ....................................................................................................................................1-4-5

1-4-4 Mechanical problems ..............................................................................................................................1-4-6

1-5 Assembly and Disassembly

1-5-1 Precautions for assembly and disassembly............................................................................................1-5-1

(1) Precautions .......................................................................................................................................1-5-1

1-5-2 Original feed section ...............................................................................................................................1-5-2

(1) Detaching and refitting the DP forwarding pulley and DP feed pulley...............................................1-5-2

(2) Detaching and refitting the DP separation pad..................................................................................1-5-5

1-5-3 Image adjustment ...................................................................................................................................1-5-6

(1) Adjusting the angle of leading edge ..................................................................................................1-5-6

(2) Adjusting the angle of trailing edge ...................................................................................................1-5-8

2-1 Mechanical construction

2-1-1 Mechanical construction .........................................................................................................................2-1-1

(1) Operation of original switchback .......................................................................................................2-1-3

2-2 Electrical Parts Layout

2-2-1 Electrical parts layout..............................................................................................................................2-2-1

(1) PWBs ................................................................................................................................................2-2-1

(2) Switches and sensors .......................................................................................................................2-2-2

(3) Motors ...............................................................................................................................................2-2-3

(4) Solenoids...........................................................................................................................................2-2-4

2-3 Operation of the PWBs

2-3-1 DP main PWB .........................................................................................................................................2-3-1

3MX

2-4 Appendixes

List of maintenance parts........................................................................................................................2-4-1

Periodic maintenance procedures ..........................................................................................................2-4-2

Wiring diagram........................................................................................................................................2-4-4

1-1 Specifications

1-1-1 Specifications

Type................................................Duplex sheet-through document feeder

Original feed method ......................Automatic feed

Original weight ................................Single-sided original mode: 45 to 160 g/m

Double-sided original mode: 50 to 120 g/m

Original type....................................Sheet originals

Original size .................................... A3 to A5R/Ledger to StatementR

Original No. of sheets .....................50 sheets or less (50 to 80 g/m

Mixed original sizes: 30 sheets or less (50 to 80 g/m2)

Original scanning speed .................53.5 to 107 mm/s

Power source..................................Electrically connected to the machine

Dimensions .....................................559 (W) x 487 (D) x 131 (H) mm

22" (W) x 19

3/16" (D) x 5 3/16" (H)

Weight.............................................7 kg/15.4 lbs or less

NOTE: These specifications are subject to change without notice.

2

)

3MX

2

2

1-1-1

3MX

1-1-2 Parts names

4

2

1

6

2

Figure 1-1-1

1. Original table

2. Original width guides

3. Original eject table

4. Document processor top cover

5. Original stopper

6. Cleaning cloth compartment

3

5

1-1-2

1-1-3 Machine cross section

3MX

2

1

Original path

3

Figure 1-1-2 Machine cross section

1. Original feed section

2. Original conveying section

3. Original switchback section

1-1-3

3MX

This page is intentionally left blank.

1-1-4

3MX

1-2 Installation

1-2-1 Installation environment

Installation location (Be based on the machine establishment place.)

Avoid direct sunlight or bright lighting. Ensure that the photoconductor will not be exposed to direct sunlight or other strong
light when removing paper jams.
Avoid locations subject to high temperature and high humidity or low temperature and low humidity; an abrupt change in
the environmental temperature; and cool or hot, direct air.
Avoid places subject to dust and vibrations.
Choose a surface capable of supporting the weight of the machine.

Place the machine on a level surface (maximum allowance inclination: 1
Avoid air-borne substances that may adversely affect the machine or degrade the photoconductor, such as mercury, acidic
of alkaline vapors, inorganic gasses, NOx, SOx gases and chlorine-based organic solvents.
Select a well-ventilated location.

°).

1-2-1

3MX

1-2-2 Unpacking

(1) Unpacking

1. Document processor

2. Outer case

3. Inner case

4. Rear upper pad

5. Rear lower pad

6. Front pad

7. Spacer

8. Plastic sheet

Caution: See the Installation Guide for installation.

1-2-2

Figure 1-2-1 Unpacking

9. Plastic bag

10. Cleaning cloth

11. Tray spacer

12. Plastic bag

13. Original mat

14. Plastic bag

15. M4 x 14 screws

16. Pins

17. Angle adjusting plate

18. Plastic bag

19. Installation guide

20. Film

21. Label A

22. Label B (220 V - 240 V
specifications only)

(2) Removing the tapes and the spacer

3MX

Procedure

1. Remove two tapes.

2. Open the document processor top cover.

3. Raise the DP feed pulley unit.

4. Open the spacer.

5. Raise the original table.

6. Remove the spacer.

7. Remove the plastic bag.

Ta pe

Document processor
top cover

DP feed pulley unit

Ta pe

Figure 1-2-2

Original table

Plastic bag

Spacer

Figure 1-2-3

1-2-3

3MX

This page is intentionally left blank.

1-2-4

1-3 Maintenance Mode

1-3-1 Maintenance mode (operation panel is a 7-segment type)

The machine is equipped with a maintenance function which can be used to maintain and service the machine.

(1) Executing a maintenance item

Start

3MX

Yes

Enter “10871087” using

the numeric keys.

Enter the maintenance item

number using the zoom

+/- keys or numeric keys.

Press the start key.

The selected maintenance item is run.

Press the stop/clear key.

Repeat the same

maintenance item?

Maintenance mode is entered.

The maintenance item is
selected.

Yes

No

Run another maintenance

item?

No

Enter “001” using the

or numeric keys

+/- keys

zoom

and press the start key.

End

Maintenance mode is exited.

1-3-1

3MX

(2) Maintenance mode item list

Section

Item

No.

Content of maintenance item

Initial

setting*

General U019 Displaying the ROM version -

Optical U068 Adjusting the scanning position for originals from the DP 0

U070 Adjusting the DP magnification 0/0

U071 Adjusting the DP scanning timing 0/0/0/0

U072 Adjusting the DP center line 0/0

U074 Adjusting the DP input light luminosity 1

U076 Adjusting the DP automatically -

U087 Setting DP reading position modification operation ON/35

Operation
panel and
support
equipment

Image

U203 Checking DP operation -

U243 Checking the operation of the DP motors -

U244 Checking the DP switches -

U404 Adjusting margins for scanning an original from the DP 2.0/3.0/2.0/2.0

processing

Other U905 Checking/clearing counts by optional devices -

U942 Setting of deflection for feeding from DP 0/0

*1

*1

*1

*1

*1

*1

*1

*1

*Initial setting for executing U020, *1: The item initialized for executing U020, *2: The item initialized for executing U021

1-3-2

(3) Contents of maintenance mode items

3MX

Maintenance

item No.

U019

Description

Displaying the ROM version
Description

Displays the part number of the ROM fitted to each board.

Purpose

To check the part number or to decide if the ROM version is new from the last digit of the number.

Method

1. Press the start key.

2. Select the item to be displayed using the image mode selection key and exposure adjustment keys.

Image mode LEDs

Exposure
indicator

Exp. 1 (lit)
Exp. 2 (lit)
Exp. 3 (lit)
Exp. 4 (lit)

Exp. 1 (lit)
Exp. 2 (lit)
Exp. 3 (lit)
Exp. 4 (lit)
Exp. 5 (lit)
Exp. 1 (flashing)

Exp. 1 (lit)
Exp. 2 (lit)
Exp. 3 (lit)
Exp. 4 (lit)
Exp. 5 (lit)

Copy quantity display

“A” Part Code: Main PWB
Change history of the main PWB
Number of the main ROM
Number of the main ROM sub

“E” Part Code: Engine PWB
Change history of the engine PWB
Number of the engine ROM
Number of the engine ROM sub
Change history of the engine PWB BOOT
Number of the engine PWB BOOT

“L” Part Code: Language
Change history of the standard language
Number of the standard language ROM
Change history of the optional language
Number of the optional language ROM

Exp. 1 (lit)
Exp. 2 (lit)
Exp. 3 (lit)
Exp. 4 (lit)

Exp. 1 (lit)
Exp. 2 (lit)

Exp. 1 (lit)
Exp. 2 (lit)
Exp. 3 (lit)

: Off, : On, : Flashing

When the optional equipment is not installed, [non] is displayed.

Completion

Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.

“C” Part Code: Cassette
Number of the optional first paper feeder ROM
Number of the optional second paper feeder ROM
Number of the optional third paper feeder ROM

“d” Part Code: DP
Number of the DP ROM

“P” Part Code: Printer
Change history of the optional printer
Number of the optional printer ROM

1-3-3

3MX

Maintenance

item No.

U068

Description

Adjusting the scanning position for originals from the DP
Description

Adjusts the position for scanning originals from the DP.

Purpose

Used when the image fogging occurs because the scanning position is not proper when the DP is used. Run
U071 to adjust the timing of DP leading edge when the scanning position is changed.

Setting

1. Press the start key.

2. Change the setting using the zoom +/- keys.

Description Setting range Initial setting Change in value per step

Scanning position -17 to 17 0 0.17 mm

Increasing the value moves the image backward, and decreasing it moves the image forward.

Supplement

While this maintenance item is being executed, copying from an original is available in interrupt copying mode
(which is activated by pressing the interrupt key).

Completion

Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.

1-3-4

3MX

Maintenance

item No.

U070

Description

Adjusting the DP magnification
Description

Adjusts the DP original scanning speed.

Purpose

Make the adjustment if the magnification is incorrect in the auxiliary scanning direction when the optional DP
is used.

Adjustment

1. Press the start key.

2. Select the item using the exposure adjustment keys.

Display Description Setting

range

Exp. 1 Magnification in the auxiliary scan-

-25 to 25 0 0.2 mm

Initial
setting

Change in
value per step

ning direction (first page)

Exp. 2 Magnification in the auxiliary scan-

-25 to 25 0 0.2 mm

ning direction (second page)

3. Press the interrupt key.

4. Place an original on the DP and press the start key to make a test copy.

5. Change the setting value using the zoom +/- keys.
For copy example 1, increase the value.
For copy example 2, decrease the value.

Original Copy

example 1

Copy

example 2

Figure 1-3-1

6. Press the start key. The value is set.

Caution

Check the copy image after the adjustment. If the image is still incorrect, perform the following adjustments in
maintenance mode.

U070

U071

(P.1-3-6)

U404

(P.1-3-13)

Completion

Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.

1-3-5

3MX

Maintenance

item No.

U071

Description

Adjusting the DP scanning timing
Description

Adjusts the DP original scanning timing.

Purpose

Make the adjustment if there is a regular error between the leading or trailing edges of the original and the
copy image when the optional DP is used.

Method

1. Press the start key.

2. Select the item using the exposure adjustment keys.

Exposure
indicator

Exp. 1 DP leading edge registration

Description Setting

range

-32 to 32 0 0.2 mm

Initial
setting

Change in
value per step

(first side)

Exp. 2 DP trailing edge registration

-42 to 32 0 0.2 mm

(first side)

Exp. 3 DP leading edge registration

-32 to 32 0 0.2 mm

(second side)

Exp. 4 DP trailing edge registration

-42 to 32 0 0.2 mm

(second side)

3. Press the interrupt key.

4. Place an original on the DP and press the start key to make a test copy.

5. Change the setting value using the zoom +/- keys.
For copy example 1, decrease the value of exp.1.
For copy example 2, increase the value of exp.1.

Original Copy

example 1

Copy

example 2

Figure 1-3-2

6. Press the start key. The value is set.

Caution

Check the copy image after the adjustment. If the image is still incorrect, perform the following adjustments in
maintenance mode.

U071

U404

(P.1-3-13)

Completion

Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.

1-3-6

3MX

Maintenance

item No.

U072

Description

Adjusting the DP center line
Description

Adjusts the scanning start position for the DP original.

Purpose

Make the adjustment if there is a regular error between the centers of the original and the copy image when
the optional DP is used.

Adjustment

1. Press the start key.

2. Select the item using the exposure adjustment keys.

Exposure
indicator

Description

Setting
range

Initial
setting

Change in
value per step

Exp. 1 DP center line (first side) -6.6 to 6.6 0 0.15 mm

Exp. 2 DP center line (second side) -3.0 to 3.0 0 0.15 mm

3. Press the interrupt key.

4. Place an original on the DP and press the start key to make a test copy.

5. Change the setting value using the zoom +/- keys.
For copy example 1, increase the value.
For copy example 2, decrease the value.

Original Copy

example 1

Copy

example 2

Figure 1-3-3

6. Press the start key. The value is set.

Caution

Check the copy image after the adjustment. If the image is still incorrect, perform the following adjustments in
maintenance mode.

U072

U404

(P.1-3-13)

Completion

Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.

1-3-7

3MX

Maintenance

item No.

U074

Description

Adjusting the DP input light luminosity
Description

Adjusts the luminosity of the exposure lamp for scanning originals from the DP.

Purpose

Used if the exposure amount differs significantly between when scanning an original on the platen and when
scanning an original from the DP.

Setting

1. Press the start key.

2. Change the setting using the zoom +/- keys.

Description Setting range Initial setting

DP input light luminosity 0 to 8 1

Increasing the setting makes the luminosity higher, and decreasing it makes the luminosity lower.

3. Press the start key. The value is set.

Supplement

While this maintenance item is being executed, copying from an original is available in interrupt copying mode
(which is activated by pressing the interrupt key).

Completion

Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.

1-3-8

3MX

Maintenance

item No.

U076

Description

Adjusting the DP automatically
Description

Uses a specified original and automatically adjusts the following items in the DP scanning section.
Adjusting the DP magnification (U070)
Adjusting the DP scanning timing (U071)
Adjusting the DP center line (U072)
When you run this maintenance mode, the preset values of U070, U071 and U072 will also be updated.

Purpose

To perform automatic adjustment of various items in the DP scanning section.

Method

1. Set a specified original (P/N: 302AC68243) in the DP.
Cut the trailing edge of the original.

F

5 mm

149 ± 1 mm

R

74 ± 1 mm

Figure 1-3-4

2. Press the start key. "on" appears.

3. Press the start key. Auto adjustment starts. When adjustment is complete, "Gd" appears.

4. Display each setting value after adjustment using the exposure adjustment keys.

Exposure indicator Description

Exp. 1 Execution result

Exp. 2 DP scanning timing

Exp. 3 DP center line

Exp. 4 DP magnification

If a problem occurs during auto adjustment, "nG" is displayed and operation stops. Determine the details
of the problem and either repeat the procedure from the beginning, or adjust the remaining items manu­ally by running the corresponding maintenance items.

Completion

Press the stop/clear key after auto adjustment is complete.The screen for selecting a maintenance item No. is
displayed.
If the stop/clear key is pressed during auto adjustment, adjustment stops and no settings are changed.

1-3-9

3MX

Maintenance

item No.

U087

Description

Setting DP reading position modification operation
Description

The presence or absence of dust is determined by comparing the scan data of the original trailing edge and
that taken after the original is conveyed past the DP original scanning position. If dust is identified, the DP
original scanning position is adjusted for the following originals.

Purpose

When using DP, to solve the problem when black lines occurs due to the dust with respect to original reading
position.

Setting

1. Press the start key.

2. Select the item to be set using the exposure adjustment keys.

Exposure indicator Description

Exp. 1 Setting the mode on/off

Exp. 2 Setting the reference data for identifying dust

Setting the mode on/off

1. Select "on" or "oFF" using the zoom +/- keys.

Display Description

on DP scanning position adjust mode on

oFF DP scanning position adjust mode off

Initial setting: on

2. Press the start key. The setting is set.

Setting the reference data for identifying dust

Available only when the mode is turned on.

1. Change the setting using the zoom +/- keys.

Description Setting range Initial setting

Minimum density to be regarded as dust 10 to 95 35

Example
The figure indicates the density in 256 levels of gray (0: white, 255: black). When the setting is 35, data
of the level of 35 or higher is regarded as dust and data of lower level is regarded as the background
(scan data taken when there is no original).

2. Press the start key. The value is set.

Completion

Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.

1-3-10

3MX

Maintenance

item No.

U203

U243

Description

Checking DP operation
Description

Simulates the original conveying operation separately in the DP.

Purpose

To check the DP operation.

Method

1. Press the start key.

2. Place an original on the DP if running this simulation with paper.

3. Select the item to be operated using the exposure adjustment keys.

Exposure indicator Display Motor

Exp. 1 d-P With paper

Exp. 2 d-n Without paper (continuous operation)

Exp. 3 dp2 With paper (duplex mode)

Exp. 4 dn2 Without paper (duplex mode)

4. Press the start key. The operation starts.

5. To stop continuous operation, press the stop/clear key.

Completion

Press the stop/clear key when the operation stops. The screen for selecting a maintenance item No. is dis­played.

Checking the operation of the DP motors
Description

Turns the motors or solenoids in the optional DP on.

Purpose

To check the operation of the DP motors or solenoids.

Method

1. Press the start key.

2. Select the motor or solenoid to be operated using the exposure adjustment keys.

3. Press the start key. The operation starts.

Exposure indicator Display Motor

Exp. 1 F-0 Original feed motor (OFM)

Exp. 2 C-0 Original conveying motor (OCM)

Exp. 3 r-0 Original switchback motor (OSBM)

Exp. 4 b-S Switchback feedshift solenoid (SBFSSOL)

Exp. 5 P-S Switchback pressure solenoid (SBPSOL)

4. To turn each motor off, press the stop/clear key.

Completion

Press the stop/clear key when operation stops. The screen for selecting a maintenance item No. is displayed.

1-3-11

3MX

Maintenance

item No.

U244

Description

Checking the DP switches
Description

Displays the status of the respective switches in the DP.

Purpose

To check if respective switches in the DP operate correctly.

Method

1. Press the start key.

2. Turn each switch on and off manually to check the status. When the on-status of a switch is detected,
the LEDs on the operation panel corresponding to the operated switch lights.

LEDs Switch

Auto Exp. Original set switch (OSSW)

Text & Photo DP timing switch (DPTSW)

Photo Original detection switch (ODSW)

Text DP original cover switch (DPOCSW)

EcoPrint Original switchback switch (OSBSW)

Program Original size length switch (OSLSW)

Completion

Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.

1-3-12

3MX

Maintenance

item No.

U404

Description

Adjusting margins for scanning an original from the DP
Description

Adjusts margins for scanning the original from the DP.

Purpose

Make the adjustment if margins are incorrect when the optional DP is used.

Caution

Before making this adjustment, ensure that the following adjustments have been made in maintenance mode.

(See the service manual

U402

for the machine.))

(See the service manual

U403

for the machine.)

U404

Adjustment

1. Press the start key.

2. Select the item using the exposure adjustment keys.

Exposure
indicator

Description

Setting
range

Initial
setting

Change in
value per step

Exp. 1 Left margin 0.0 to 10.0 2.0 0.5 mm

Exp. 2 Leading edge margin 0.0 to 10.0 3.0 0.5 mm

Exp. 3 Right margin 0.0 to 10.0 2.0 0.5 mm

Exp. 4 Trailing edge margin 0.0 to 10.0 2.0 0.5 mm

3. Press the interrupt key.

4. Place an original on the DP and press the start key to make a test copy.

5. Change the setting value using the zoom +/- keys.
Increasing the value makes the margin wider, and decreasing it makes the margin narrower.

Leading edge margin
(3.0±2.5 mm)

Left margin

(2.5+1.5/-2.0 mm)

Trailing edge margin
(3.0±2.5 mm)

Right margin
(2.5+1.5/-2.0 mm)

Figure 1-3-5

6. Press the start key. The value is set.

Completion

Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.

1-3-13

3MX

Maintenance

item No.

U905

U942

Description

Checking/clearing counts by optional devices
Description

Displays the counts of DP or finisher.

Purpose

To check the use of DP and finisher.

Method

1. Press the start key.

2. Select the count (group No.) to be checked using the image mode selection key.

3. Select the item using the exposure adjustment keys.

Image mode LED
(group No.)

1 Exp. 1

2 Exp. 1

: Off, : On

Completion

Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.

Setting of deflection for feeding from DP
Description

Adjusts the deflection generated when the DP is used.

Purpose

Use this mode if an original non-feed jam, oblique feed or wrinkling of original occurs when the DP is used.

Setting

1. Press the start key.

2. Select the item using the exposure adjustment keys.

Exposure
indicator

Exp. 1 Original feed motor (OFM)

Exp. 2 Original switchback motor (OSBM)

3. Press the interrupt key.

4. Place an original on the DP and press the start key to make a test copy.

5. Change the setting value using the zoom +/- keys.
The greater the value, the larger the amount of slack; the smaller the value, the smaller the amount of
slack.
If an original non-feed jam or oblique feed occurs, increase the setting value. If wrinkling of original
occurs, decrease the value.

6. Press the start key. The value is set.

Completion

Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.

Description Setting range Initial setting

(in simplex feed)

(in duplex feed)

Exposure
indicator

Exp. 2

Exp. 2

Copy quantity display (count value)

First 3 digits of the no. of single-sided originals
that has passed through the DP
Last 3 digits of the no. of single-sided originals
that has passed through the DP

First 3 digits of the no. of double-sided originals
that has passed through the DP
Last 3 digits of the no. of double-sided originals
that has passed through the DP

-10 to 20 0

-10 to 20 0

1-3-14

1-3-2 Maintenance mode (operation panel is an LCD type)

The machine is equipped with a maintenance function which can be used to maintain and service the machine.

(1) Executing a maintenance item

Start

3MX

Yes

Enter 10871087 using

the numeric keys.

Enter the maintenance item

number using the cursor up/down keys

or numeric keys.

Press the start key.

The selected maintenance item is run.

Press the stop/clear key.

Repeat the same

maintenance item?

Maintenance mode is entered.

The maintenance item is
selected.

Yes

No

Run another maintenance

item?

No

Enter 001 using the cursor

up/down keys or numeric keys

and press the start key.

End

Maintenance mode is exited.

1-3-15

3MX

(2) Maintenance mode item list

Section

Item

No.

Content of maintenance item

Initial

setting*

General U019 Displaying the ROM version -

Optical U068 Adjusting the scanning position for originals from the DP 0

U070 Adjusting the DP magnification 0/0

U071 Adjusting the DP scanning timing 0/0/0/0

U072 Adjusting the DP center line 0/0/0

U074 Adjusting the DP input light luminosity 0

U076 Executing DP automatic adjustment -

U087 Setting DP reading position modification operation ON/35

Operation
panel and
support
equipment

U203 Checking DP operation -

U243 Checking the operation of the DP motors -

U244 Checking the DP switches -

Mode setting U326 Setting the black line cleaning indication ON

Image

U404 Adjusting margins for scanning an original from the DP 2.0/3.0/2.0/2.0

processing

Other U905 Checking counts by optional devices -

U942 Setting of deflection for feeding from DP 0/0

*1

*1

*1

*1

*1

*1

*1,*2

*1

*1

*Initial setting for executing U020, *1: The item initialized for executing U020, *2: The item initialized for executing U021

1-3-16

(3) Contents of maintenance mode items

3MX

Maintenance

item No.

U019

Description

Displaying the ROM version
Description

Displays the part number of the ROM fitted to each PWB.

Purpose

To check the part number or to decide, if the newest version of ROM is installed.

Method

1. Press the start key. The ROM version are displayed.

2. Change the screen using the cursor up/down keys.

Display Description

MAIN Main ROM

ENGINE Engine ROM

LANG(St) Standard language ROM

LANG(Op) Optional language ROM

MAIN BOOT Boot of main ROM

PRINTER Printer ROM

NWS Optional network scanner ROM

DP DP ROM

FINISHER Optional built-in finisher ROM

CASS2 Optional first paper feeder ROM (standard for 22 ppm model)

CASS3 Optional second paper feeder ROM

CASS4 Optional third paper feeder ROM

U068

Completion

Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.

Adjusting the scanning position for originals from the DP
Description

Adjusts the position for scanning originals from the DP.

Purpose

Used when the image fogging occurs because the scanning position is not proper when the DP is used. Run
U071 to adjust the timing of DP leading edge when the scanning position is changed.

Setting

1. Press the start key.

2. Change the setting using the cursor left/right keys.

Description Setting

range

Starting position adjustment forscanning originals -17 to 17 0 0.17 mm

Increasing the value moves the image backward, and decreasing it moves the image forward.

3. Press the start key. The value is set.

Supplement

While this maintenance item is being executed, copying from an original is available in interrupt copying mode
(which is activated by pressing the interrupt key).

Completion

Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.

Initial
setting

Change in
value per step

1-3-17

3MX

Maintenance

item No.

U070

Description

Adjusting the DP magnification
Description

Adjusts the DP original scanning speed.

Purpose

Make the adjustment if the magnification is incorrect in the auxiliary scanning direction when the optional DP
is used.

Adjustment

1. Press the start key.

2. Select the item to be adjusted using the cursor up/down keys.

Display Description Setting

range

CONVEY
SPEED 1

CONVEY
SPEED 2

Magnification in the auxiliary scan­ning direction (first page)

Magnification in the auxiliary scan­ning direction (second page)

-25 to 25 0 0.2 mm

-25 to 25 0 0.2 mm

Initial
setting

Change in
value per step

1. Press the interrupt key.

2. Place an original on the DP and press the start key to make a test copy.

3. Change the setting value using the cursor left/right keys.
For copy example 1, increase the value. For copy example 2, decrease the value.

Original Copy

example 1

Copy

example 2

Figure 1-3-6

4. Press the start key. The value is set.

Caution

Check the copy image after the adjustment. If the image is still incorrect, perform the following adjustments in
maintenance mode.

U070

U071

(P.1-3-19)

U404

(P.1-3-27)

Completion

Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.

1-3-18

3MX

Maintenance

item No.

U071

Description

Adjusting the DP scanning timing
Description

Adjusts the DP original scanning timing.

Purpose

Make the adjustment if there is a regular error between the leading or trailing edges of the original and the
copy image when the optional DP is used.

Method

1. Press the start key.

2. Select the item to be adjusted using the cursor up/down keys.

Display Description Setting

range

Initial
setting

Change in
value per step

LEAD 1 Leading edge registration (first page) -32 to 22 0 0.2 mm

TRAIL 1 Trailing edge registration (first page) -22 to 32 0 0.2 mm

LEAD 2 Leading edge registration (second page) -32 to 22 0 0.2 mm

TRAIL 2 Trailing edge registration (second page) -22 to 32 0 0.2 mm

Adjustment: Leading edge registration

1. Select [LEAD 1] or [LEAD 2] using the cursor up/down keys.

2. Press the interrupt key.

3. Place an original on the DP and press the start key to make a test copy.

4. Change the setting value using the cursor left/right keys.
For copy example 1, increase the value. For copy example 2, decrease the value.

Original Copy

example 1

Copy

example 2

Figure 1-3-7

5. Press the start key. The value is set.

Caution

Check the copy image after the adjustment. If the image is still incorrect, perform the following adjustments in
maintenance mode.

U071

U404

(P.1-3-27)

1-3-19

3MX

Maintenance

item No.

U071

Description

Adjustment: Trailing edge registration

1. Select [TRAIL 1] or [TRAIL 2] using the cursor up/down keys.

2. Press the interrupt key.

3. Place an original on the DP and press the start key to make a test copy.

4. Change the setting value using the cursor left/right keys.
For copy example 1, increase the value. For copy example 2, decrease the value.

Original

Copy

example 1

Copy

example 2

Figure 1-3-8

5. Press the start key. The value is set.

Caution

Check the copy image after the adjustment. If the image is still incorrect, perform the following adjustments in
maintenance mode.

U071

U404

(P.1-3-27)

Completion

Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.

1-3-20

3MX

Maintenance

item No.

U072

Description

Adjusting the DP center line
Description

Adjusts the scanning start position for the DP original.

Purpose

Make the adjustment if there is a regular error between the centers of the original and the copy image when
the optional DP is used.

Adjustment

1. Press the start key.

2. Select the item to be adjusted using the cursor up/down keys.

Display Description

Setting
range

Initial
setting

Change in
value per step

1sided DP center line (simplex mode) -39 to 39 0 0.15 mm

2sided front DP center line (first page of duplex

-39 to 39 0 0.15 mm

mode)

2sided back DP center line (second page of

-39 to 39 0 0.15 mm

duplex mode)

3. Press the interrupt key.

4. Place an original on the DP and press the start key to make a test copy.

5. Change the setting value using the cursor left/right keys.
For copy example 1, increase the value. For copy example 2, decrease the value.

Original Copy

example 1

Copy

example 2

Figure 1-3-9

6. Press the start key. The value is set.

Caution

Check the copy image after the adjustment. If the image is still incorrect, perform the following adjustments in
maintenance mode.

U072

U404

(P.1-3-27)

Completion

Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.

1-3-21

3MX

Maintenance

item No.

U074

Description

Adjusting the DP input light luminosity
Description

Adjusts the luminosity of the exposure lamp for scanning originals from the DP.

Purpose

Used if the exposure amount differs significantly between when scanning an original on the platen and when
scanning an original from the DP.

Setting

1. Press the start key.

2. Change the setting value using the cursor left/right keys.

Description Setting range Initial setting

DP input light luminosity 0 to 8 0

Increasing the setting makes the luminosity higher, and decreasing it makes the luminosity lower.

3. Press the start key. The value is set.

Supplement

While this maintenance item is being executed, copying from an original is available in interrupt copying mode
(which is activated by pressing the interrupt key).

Completion

Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.

1-3-22

3MX

Maintenance

item No.

U076

Description

Executing DP automatic adjustment
Description

Uses a specified original and automatically adjusts the following items in the DP scanning section.
Adjusting the DP magnification (U070)
Adjusting the DP scanning timing (U071)
Adjusting the DP center line (U072)
When you run this maintenance mode, the preset values of U070, U071 and U072 will also be updated.

Purpose

To perform automatic adjustment of various items in the DP scanning section.

Method

1. Set a specified original (P/N: 302AC68243) in the DP.
Cut the trailing edge of the original.

F

5 mm

149 ± 1 mm

R

74 ± 1 mm

Figure 1-3-10

2. Press the start key.

3. Press the start key. Auto adjustment starts.
When adjustment is complete, each adjusted value is displayed.

Display Description

CONVEY SPEED DP magnification in the auxiliary scanning direction

LEAD EDGE ADJ DP leading edge registration

DP CENTER DP original center line

If a problem occurs during auto adjustment, DATA: XX (XX is replaced by an error code) is displayed
and operation stops. Should this happen, determine the details of the problem and either repeat the pro­cedure from the beginning, or adjust the remaining items manually by running the corresponding main­tenance items.

Completion

Press the stop/clear key after auto adjustment is complete. The screen for selecting a maintenance item is
displayed.
If the stop/clear key is pressed during auto adjustment, adjustment stops and no settings are changed.

1-3-23

3MX

Maintenance

item No.

U087

Description

Setting DP reading position modification operation
Description

The presence or absence of dust is determined by comparing the scan data of the original trailing edge and
that taken after the original is conveyed past the DP original scanning position. If dust is identified, the DP
original scanning position is adjusted for the following originals.

Purpose

When using DP, to solve the problem when black lines occurs due to the dust with respect to original reading
position.

Setting

1. Press the start key.

2. Select ON or OFF using the cursor up/down keys.

Display Description

ON DP scanning position adjust mode on

OFF DP scanning position adjust mode off

Initial setting: ON

3. Press the start key. The setting is set.

Setting the reference data for identifying dust

Available only when the mode is turned on.

1. Change the setting using the cursor left/right keys.

Description Setting range Initial setting

Minimum density to be regarded as dust 10 to 95 35

Example
The figure indicates the density in 256 levels of gray (0: white, 255: black). When the setting is 35, data
of the level of 35 or higher is regarded as dust and data of lower level is regarded as the background
(scan data taken when there is no original).

2. Press the start key. The value is set.

U203

Completion

Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.

Checking DP operation
Description

Simulates the original conveying operation separately in the DP.

Purpose

To check the DP operation.

Method

1. Press the start key.

2. Place an original in the DP if running this simulation with paper.

3. Select the item to be operated using the cursor up/down keys.

Display Operation

ADP With paper, single-sided original

RADP With paper, double-sided original

ADP (NON P) Without paper, single-sided original (continuous operation)

RADP (NON P) Without paper, double-sided original (continuous operation)

4. Press the start key. The operation starts.

5. To stop continuous operation, press the stop/clear key.

Completion

Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.

1-3-24

3MX

Maintenance

item No.

U243

U244

Description

Checking the operation of the DP motors
Description

Turns the motors and solenoids in the DP on.

Purpose

To check the operation of the DP motors or solenoids.

Method

1. Press the start key.

2. Select the item to be operated using the cursor up/down keys.

3. Press the start key. The operation starts.

Display Motors and solenoids

F MOT Original feed motor (OFM) is turned on.

C MOT Original conveying motor (OCM) is turned on.

R MOT Original switchback motor (OSBM) is turned on.

RJ SL Switchback feedshift solenoid (SBFSSOL) is turned on.

RP SL Switchback pressure solenoid (SBPSOL) is turned on.

4. To stop operation, press the stop/clear key.

Completion

Press the stop/clear key when operation stops. The screen for selecting a maintenance item No. is displayed.

Checking the DP switches
Description

Displays the status of the respective switches in the DP.

Purpose

To check if respective switches in the DP operate correctly.

Method

1. Press the start key.

2. Turn the respective switches on and off manually to check the status.
When a switch is detected to be in the ON position, the display for that switch will be highlighted.

Display Switches

SET SW Original set switch (OSSW)

TMG SW DP timing switch (DPTSW)

MAT SW DP open/close switch (DPOCSW)

COV SW DP interlock switch (DPILSW)

REV SW Original switchback switch (OSBSW)

SZ A SW Original size length switch (OSLSW)

Completion

Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.

1-3-25

3MX

Maintenance

item No.

U326

Description

Setting the black line cleaning indication
Description

Sets whether to display the cleaning guidance when detecting the black line.

Purpose

Displays the cleaning guidance in order to make the call for service with the black line decrease by the rubbish
on the platen when scanning from the DP.

Setting

1. Press the start key.

2. Select ON or OFF using the cursor up/down keys.

Display Description

ON Displays the cleaning guidance

OFF Not to display the cleaning guidance

Initial setting: ON

3. Press the start key. The setting is set.

Completion

Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.

1-3-26

3MX

Maintenance

item No.

U404

Description

Adjusting margins for scanning an original from the DP
Description

Adjusts margins for scanning the original from the DP.

Purpose

Make the adjustment if margins are incorrect when the optional DP is used.

Caution

Before making this adjustment, ensure that the following adjustments have been made in maintenance mode.

(See the service manual

U402

for the machine.))

(See the service manual

U403

for the machine.)

U404

Adjustment

1. Press the start key.

2. Select the item to be adjusted using the cursor up/down keys.

Display Description

Setting
range

Initial
setting

Change in
value per step

A MARGIN DP left margin 0 to 10.0 2.0 0.1 mm

B MARGIN DP leading edge margin 0 to 10.0 3.0 0.1 mm

C MARGIN DP right margin 0 to 10.0 2.0 0.1 mm

D MARGIN DP trailing edge margin 0 to 10.0 2.0 0.1 mm

3. Press the interrupt key.

4. Place an original on the DP and press the start key to make a test copy.

5. Change the setting value using the cursor left/right keys.
Increasing the value makes the margin wider, and decreasing it makes the margin narrower.

Leading edge margin
(3.0±2.5 mm)

Left margin

(2.5+1.5/-2.0 mm)

Trailing edge margin
(3.0±2.5 mm)

Right margin
(2.5+1.5/-2.0 mm)

Figure 1-3-11

6. Press the start key. The value is set.

Completion

Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.

1-3-27

3MX

Maintenance

item No.

U905

Description

Checking counts by optional devices
Description

Displays the counts of DP or finisher.

Purpose

To check the use of DP and finisher.

Method

1. Press the start key.

2. Select the device, the count of which is to be checked using the cursor up/down keys.

3. Press the start key. The count of the selected device is displayed.

Display Description

DP Counts of DP

FINISHER Counts of optional finisher

DP

Display Description

ADP No. of single-sided originals that has passed through the DP

RADP No. of double-sided originals that has passed through the DP

Finisher

Display Description

CP CNT No. of copies that has passed

STAPLE Frequency the stapler has been activated

BUNDLE EJECT Frequency the bundle discharge has been activated

U942

Completion

Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.

Setting of deflection for feeding from DP
Description

Adjusts the deflection generated when the DP is used.

Purpose

Use this mode if an original non-feed jam, oblique feed or wrinkling of original occurs when the DP is used.

Setting

1. Press the start key.

2. Select the item to be adjusted using the cursor up/down keys.

Display Description Setting range Initial setting

FEED MOT Deflection in the original feed motor -10 to 20 0

REV MOT Deflection in the original switchback motor -10 to 20 0

3. Press the interrupt key.

4. Place an original on the DP and press the start key to make a test copy.

5. Change the setting value using the cursor left/right keys.
The greater the value, the larger the deflection; the smaller the value, the smaller the deflection.
If an original non-feed jam or oblique feed occurs, increase the setting value. If wrinkling of original
occurs, decrease the value.

6. Press the start key. The value is set.

Completion

Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.

1-3-28

3MX

OSBSW

1-4 Troubleshooting

1-4-1 Original misfeed detection

(1) Original misfeed indication

When an original jams, the machine immediately stops operation and a message is shown on the machine operation
panel.
To remove the jammed original, open the document processor top cover.
To reset the original misfeed detection, open and close the document processor top cover.

(2) Original misfeed detection conditions

OSBSW

OSBSW

DPTSW

Figure 1-4-1

1-4-1

3MX

Section Jam code Conditions Specified

Document
processor70No original feed

71
An original jam in the orig­inal conveying section 1

72
An original size error jam

73
An original jam in the orig­inal conveying section 2

74
An original jam in the orig­inal conveying section 3

75
An original jam in the orig­inal switchback section

78
Document processor
cover open

During primary feed of the second original in the simplex or
duplex mode, even if retry operation is performed five times,
primary original feed is not performed.

During the secondary original feed in the simplex mode, DP
timing switch (DPTSW) does not turn off within specified time
of the original conveying motor (OCM) turning on.

DP timing switch (DPTSW) turns off within the specified time
of period of the original conveying motor (OCM) turning on in
the simplex or duplex mode.

During original conveying in the duplex mode, DP timing
switch (DPTSW) does not turn off within specified time of the
original conveying motor (OCM) turning on.

During secondary original feed in the duplex mode, DP tim­ing switch (DPTSW) does not turn on within specified time of
the original switchback motor (OSBM) turning on.

During original switchback in the duplex mode, the original
switchback switch (OSBSW) does not turn on within speci­fied time of the original conveying motor (OCM) turning on.

The document processor or document processor top cover is
opened during original feeding.
The original set switch (OSSW) or original size length switch
(OSLSW) turns on when starting the original paper feed.

-

9900 pulses

1145 pulses

9900 pulses

2300 pulses

10700 pulses

-

time

1-4-2

(3) Paper misfeeds

3MX

Problem

(1)
An original jams in
DP is indicated dur­ing copying (no origi­nal feed).
Jam code 70

(2)
An original jams in
DP is indicated dur­ing copying (an origi­nal jam in the original
conveying section 1).
Jam code 71

(3)
An original jams in
DP is indicated dur­ing copying (an origi­nal size error jam).
Jam code 72

(4)
An original jams in
DP is indicated dur­ing copying (an origi­nal jam in the original
conveying section 2).
Jam code 73

(5)
An original jams in
DP is indicated dur­ing copying (an origi­nal jam in the original
conveying section 3).
Jam code 74

Causes/check procedures

Defective original set
switch.

Check if the original feed
motor malfunctions.

Check if the DP paper feed
pulley or DP separation pad
is deformed.

Defective DP timing switch. Run maintenance item U244 and turn the DP timing switch on and

Check if the original con­veying motor malfunctions.

Defective DP timing switch. Run maintenance item U244 and turn the DP timing switch on and

Check if the original con­veying motor malfunctions.

Defective DP timing switch. Run maintenance item U244 and turn the DP timing switch on and

Check if the original con­veying motor malfunctions.

Defective DP timing switch. Run maintenance item U244 and turn the DP timing switch on and

Check if the original con­veying motor malfunctions.

Run maintenance item U244 and turn the original set switch on
and off manually. Replace the switch if indication of the corre­sponding switch is not light.

Run maintenance item U243 and select the original feed motor to
be turned on and off. Check the status and remedy if necessary.

Check visually and replace.

off manually. Replace the switch if indication of the corresponding
switch is not light.

Run maintenance item U243 and select the original conveying
motor to be turned on and off. Check the status and remedy if nec­essary.

off manually. Replace the switch if indication of the corresponding
switch is not light.

Run maintenance item U243 and select the original conveying
motor to be turned on and off. Check the status and remedy if nec­essary.

off manually. Replace the switch if indication of the corresponding
switch is not light.

Run maintenance item U243 and select the original conveying
motor to be turned on and off. Check the status and remedy if nec­essary.

off manually. Replace the switch if indication of the corresponding
switch is not light.

Run maintenance item U243 and select the original conveying
motor to be turned on and off. Check the status and remedy if nec­essary.

Corrective measures

(6)
An original jams in
DP is indicated dur­ing copying (an origi­nal jam in the original
switchback section).
Jam code 75

Defective DP timing switch. Run maintenance item U244 and turn the DP timing switch on and

off manually. Replace the switch if indication of the corresponding
switch is not light.

Check if the original switch­back motor malfunctions.

Run maintenance item U243 and select the original switchback
motor to be turned on and off. Check the status and remedy if nec­essary.

1-4-3

3MX

1-4-2 Self-diagnosis

(1) Self-diagnostic function (operation panel is a 7-segment type)

When an unexpected error is detected for some reason, a system error (A call error) will be indicated. After a system error
(A call error) is indicated, the error can be cleared by turning the main power switch off and then on. If a system error (A
call error) occurs frequently, a fault may have occurred. Check the details of the C call to take proper measures.

(2) Self diagnostic codes (operation panel is a 7-segment type)

Remarks

Code Contents

A0410 Document processor communication

problem

Communication fails five times succes­sively.

Causes Check procedures/corrective measures

Document proces­sor installed incor­rectly.

Defective PWB. Replace the main/engine PWB or DP driver

Check the installation state of the document
processor and adjust it if it is not properly
installed.

PWB and check for correct operation.

(3) Self-diagnostic function (operation panel is an LCD type)

When an unexpected error is detected for some reason, a system error will be indicated. After a system error is indicated,
the error can be cleared by turning the main power switch off and then on. If the error is detected continuously, however,
perform the operation shown in Table 1-4-1. If a system error occurs frequently, a fault may have occurred. Check the
details of the C call to take proper measures.

System error Contents Operation

0410 Document processor communication problem

Table 1-4-1

(4) Self diagnostic codes (operation panel is an LCD type)

Code Contents

C0410 Document processor communication

problem

Communication fails five times succes­sively.

Document proces­sor installed incor­rectly.

Defective PWB. Replace the engine PWB or DP driver PWB

System error

Remarks

Causes Check procedures/corrective measures

Check the installation state of the document
processor and adjust it if it is not properly
installed.

and check for correct operation.

→ service call

1-4-4

1-4-3 Electric problems

Troubleshooting to each failure must be in the order of the numbered symptoms.

Problem Causes Check procedures/corrective measures

(1)
The original feed
motor, original con­veying motor or origi­nal switchback motor
does not operate.

1. Poor contact in the con­nector terminals.

2. Defective drive transmis­sion system.

3. Defective motor. Run maintenance item U243 and check if the motor operates. If

4. Defective DP main PWB. Run maintenance item U243 and check if the motor operates. If

Reinsert the connector. Also check for continuity within the con­nector cable. If none, remedy or replace the cable.

Check if the rollers and gears rotate smoothly. If not, grease the
bushings and gears. Check for broken gears and replace if any.

not, replace the motor.

not, replace the DP main PWB.

3MX

(2)
The DP cooling fan
motor does not oper­ate.

(3)
The switchback feed­shift solenoid or
switchback pressure
solenoid does not
operate.

(4)
A message indicating
cover open is dis­played when the doc­ument processor top
cover is closed cor­rectly.

(5)
An original jams
when the main power
switch is turned on.

1. Poor contact in the con­nector terminals.

2. Broken motor coil. Check for continuity across the coil. If none, replace the motor.

1. Defective solenoid coil. Check for continuity across the coil. If none, replace the solenoid.

2. Poor contact in the con­nector terminals.

3. Defective DP main PWB. Run maintenance item U243 and check if the solenoid operates. If

1. Poor contact in the con­nector terminals of DP
interlock switch.

2. Defective DP interlock
switch.

1. A piece of paper torn
from an original is caught
around the switch.

2. Defective DP timing
switch or original switch­back switch.

Reinsert the connector. Also check for continuity within the con­nector cable. If none, remedy or replace the cable.

Reinsert the connector. Also check for continuity within the con­nector cable. If none, remedy or replace the cable.

not, replace the DP main PWB.

Reinsert the connector. Also check for continuity within the con­nector cable. If none, remedy or replace the cable.

Check for continuity across the contacts of the switch. If none
when the switch is on, replace DP interlock switch.

Remove any found.

Run maintenance item U244 and turn the switch on and off manu­ally. Replace the switch if indication of the corresponding switch is
not light.

1-4-5

3MX

1-4-4 Mechanical problems

Problem Causes/check procedures Corrective measures

(1)
No primary original feed.

The surfaces of the DP forwarding pulley, DP
feed pulley or DP separation pad are dirty
with paper powder.

Check if the DP forwarding pulley or the DP
feed pulley is deformed.

Electrical problem with the original feed
motor.

Check and clean them with isopropyl alcohol
if they are dirty.

Replace the pulley if it is deformed (see
page 1-5-2).

See page 1-4-5.

(2)
Originals jam.

Originals outside the specifications are used. Use only originals conforming to the specifi-

cations.

The surfaces of the DP forwarding pulley, DP
original feed pulley or DP separation pad are
dirty with paper powder.

Check if the contact between the eject roller
and eject pulley is correct.

Check if the contact between the switchback
roller and switchback pulley is correct.

Check and clean them with isopropyl alcohol
if they are dirty.

Check visually and remedy if necessary.

Check visually and remedy if necessary.

1-4-6

3MX

1-5 Assembly and Disass embly

1-5-1 Precautions for assembly and disassembly

(1) Precautions

Before starting disassembly, press the Power key on the operation panel to off. Make sure that the Power lamp is off
before turning off the main power switch. And then unplug the power cable from the wall outlet.
Turning off the main power switch before pressing the power key to off may cause damage to the equipped hard disk.
When handling PWBs (printed wiring boards), do not touch parts with bare hands.
The PWBs are susceptible to static charge.
Do not touch any PWB containing ICs with bare hands or any object prone to static charge.
When removing the hook of the connector, be sure to release the hook.
Take care not to get the cables caught.
To reassemble the parts, use the original screws. If the types and the sizes of screws are not known, refer to the PARTS
LIST.

Output Connector for Interconnecting Cable is non-LPS.
Output: 114.5 VA max.
Please use the item below Interconnecting Cable/
P/N: 303MX46010

1-5-1

3MX

1-5-2 Original feed section

(1) Detaching and refitting the DP forwarding pulley and DP feed pulley

Follow the procedure below to clean or replace the DP forwarding pulley or DP feed pulley.

Procedure

Removing the DP forwarding pulley

1. Open the document processor top cover.

2. Raise the DP feed pulley unit.
Release the claw holding the DP forwarding
pulley shaft and then pull out the shaft.

3. Remove the DP forwarding pulley.

Document processor
top cover

DP feed
pulley unit

DP forwarding pulley

Figure 1-5-1

DP forwarding
pulley shaft

Claw

DP feed
pulley unit

1-5-2

Removing the DP feed pulley

4. Remove the stop ring and two original feed
guides of the DP feed pulley shaft.
When mounting the original feed guide, fit
the projection of the original feed guide into
the groove of the DP feed pulley shaft.
Align the original feed guide with the side
affixed with a C label facing the front side of
the machine.

5. Remove the DP feed pulley unit from the
DP.

Groove

Stop ring

3MX

DP feed
pulley shaft

Original feed guide

DP feed
pulley shaft

DP feed
pulley unit

Original
feed guide

Original
feed guide

Label C

Figure 1-5-2

1-5-3

3MX

6. Remove two stop rings and then remove DP
feed pulley shaft from the DP feed pulley
unit.

7. Remove DP feed pulley from the DP feed
pulley shaft.

8. Clean or replace the DP forwarding pulley
and the DP feed pulley.
Refit all the removed parts.

DP feed
pulley shaft

DP feed pulley

DP feed
pulley unit

Stop ring

Stop ring

DP feed
pulley shaft

Figure 1-5-3

1-5-4

(2) Detaching and refitting the DP separation pad

Follow the procedure below to clean or replace the DP separation pad.

Procedure

1. Remove the DP feed pulley unit. (see page

DP separation pad

1-5-2)

2. Push the inserted parts of the DP separation
pad and then remove the DP separation
pad.

3. Clean or replace the DP separation pad.
Refit all the removed parts.

Inserted part

3MX

DP separation pad

Inserted part

Figure 1-5-4

1-5-5

3MX

1-5-3 Image adjustment

(1) Adjusting the angle of leading edge

Perform the following adjustment if the leading edge of the copy image is laterally skewed.

Procedure

1. Place an original on the DP and press the
start key to make a test copy.

2. If the gap of leading edge exceeds the refer­ence value, perform the following adjust­ment.
Reference value
For simplex copying: Within ±3.0 mm
For duplex copying: Within ±4.0 mm

Original

3. Open the DP and loosen two adjusting
screws of right hinge.

4. Adjust the position of the DP.
For copy example 1: Move the DP down ( ).
For copy example 2: Move the DP up ( ).
Amount of change per scale: Approx. 0.5 mm

5. Tighten two adjusting screws.

Copy

example 1

Figure 1-5-5

3 mm/4 mm 3 mm/4 mm

Copy

example 2

1-5-6

Adjusting
screws

Figure 1-5-6

6. Remove the original mat.

7. Place the original mat with its hook and loop
fasteners up over the platen.
Align original mat corner that has 90
degrees of angle with the inner left corner of
the original instruction panel.

8. Close the DP slowly to attach the original
mat.

9. Make a test copy again.

10. Repeat steps 3 to 9 above until the gap of
the leading edge falls within the reference
values.

3MX

Original mat

Figure 1-5-7

1-5-7

3MX

(2) Adjusting the angle of trailing edge

Perform the following adjustment if the trailing edge of the copy image is laterally skewed.

Procedure

1. Place an original on the DP and press the
start key to make a test copy.

2. If the gap of trailing edge exceeds the refer­ence value, perform the following adjust­ment.
Reference value
For simplex copying: Within ±3.0 mm
For duplex copying: Within ±4.0 mm

Original

Copy

example 1

Figure 1-5-8

3. Open the DP and release two latches using
a flat-head screwdriver.

3 mm/4 mm 3 mm/4 mm

Copy

example 2

4. Release three latches using a flat-head
screwdriver and remove the document pro­cessor rear cover.

Latches

Figure 1-5-9

Document processor
rear cover

Latch

Latch

Latch

1-5-8

Figure 1-5-10

5. Adjust the height of DP.

1) Loosen the nut.

2) For copy example 1:
Loosen the adjusting screw ( ).
For copy example 2:
Tighten the adjusting screw ( ).

3) Tighten the nut.

6. Refit the document processor rear cover.

Original

Copy

example 1

Figure 1-5-11

3MX

3 mm/4 mm 3 mm/4 mm

Copy

example 2

Adjusting screw

Nut

7. Remove the original mat.

8. Place the original mat with its hook and loop
fasteners up over the platen.
Align original mat corner that has 90
degrees of angle with the inner left corner of
the original instruction panel.

9. Close the DP slowly to attach the original
mat.

10. Make a test copy again.

11. Repeat steps 3 to 10 above until the gap of
the trailing edge falls within the reference
values.

Figure 1-5-12

Original mat

Figure 1-5-13

1-5-9

3MX

This page is intentionally left blank.

1-5-10

3MX

1

20

21

18

19

14

15

10

11

13

12

17

16

23

22

24

2-1 Mechanical construction

2-1-1 Mechanical construction

The DP consists of the original feed section, original conveying section and original switchback section.
The original feed section conveys an original set on the original table to the original conveying section in synchronization
with original scanning of the scanner on the machine.
The original conveying section conveys an original onto the slit glass and ejects it after scanning is complete.
The original switchback section reverses an original conveyed from the original conveying section and conveys it again
to the original conveying section in the double-sided original mode.

19

19

2

13

13

7

7

2

1

1

3

3

10

10

20

20

9

9

15

11

11

12

12

15

22

22

24

24

18

18

5

5

4

4

8

14

14

8

21

21

6

6

17

17

16

16

(1) DP forwarding pulleys
(2) DP feed pulley
(3) DP separation pad
(4) Conveying pulley
(5) Conveying roller
(6) Conveying pulley
(7) Conveying pulley
(8) Switchback feedshift guide
(9) Switchback roller
(10) Switchback pulley
(11) Eject pulley
(12) Eject roller

23

23

Figure 2-1-1 Original feed section

(13) Original set switch (OSSW)
(14) DP timing switch (DPTSW)
(15) Original switchback switch (OSBSW)
(16) Original size length switch (OSLSW)
(17) Scanning guide
(18) Conveying upper guide
(19) Document processor top cover
(20) Actuator (Original set switch)
(21) Actuator (DP timing switch)
(22) Actuator (Original switchback switch)
(23) Actuator (Original size length switch)
(24) Original size width switch (OSWSW)

2-1-1

3MX

DPMPWB

YC7-2,3

YC4-7,9,10,12

YC3-1,3,4,6

YC4-1,3,4,6

YC6-2

YC10-2

YC7-5

YC9-2

ACT,RET

B,A,_B,_A

B,A,_B,_A

B,A,_B,_A

TMG SW

SET SW

ACT

REV SW

OCM

OFM

DPTSW

SBPSOL

OSBM

OSSW OSBSW

SBFSSOL

Figure 2-1-2

2-1-2

3MX

(1) Operation of original switchback

In the double-sided original mode, after the first side of an original is scanned, the switchback feedshift guide is activated
to switch the conveying path to the switchback tray side and the original is fed to the switchback tray. Then, the original is
reversed by the reverse rotation of the original switchback motor (OSBM) and conveyed again to the original conveying
section. After the second side is scanned, the original is fed temporarily to the switchback tray, is reversed, is conveyed
without scanning, and then is ejected to the exit tray. Also the switchback press solenoid (SBPSOL) is activated to
release the switchback pulley for preventing original jams in the original switchback section.

First side scanning Switchback tray

Original conveying motor (OCM): Forwerd rotation

Original switchback motor (OSBM): Forwerd rotation

Switchback feedshift solenoid (SBFSSOL): ON

Original switchback operate

Original conveying motor (OCM): Stop

Original switchback motor (OSBM): Reverse rotation

Switchback feedshift solenoid (SBFSSOL): OFF

Second side scanning Switchback tray

Original conveying motor (OCM): Forwerd rotation

Original switchback motor (OSBM): Forwerd rotation

Switchback feedshift solenoid (SBFSSOL): ON

Original switchback operate

Original conveying motor (OCM): Stop

Original switchback motor (OSBM): Reverse rotation

Switchback feedshift solenoid (SBFSSOL): OFF

Conveyed without scanning Eject tray

Original conveying motor (OCM): Forwerd rotation

Original switchback motor (OSBM): Forwerd rotation

Switchback feedshift solenoid (SBFSSOL): OFF

Figure 2-1-3

2-1-3

3MX

This page is intentionally left blank.

2-1-4

2-2 Electrical Parts Layout

2-2-1 Electrical parts layout

(1) PWBs

3MX

1

Machine front

Machine inside

Machine rear

Figure 2-2-1 PWBs

1. DP main PWB (DPMPWB) .......................... Controls electrical components of the DP.

2-2-1

3MX

(2) Switches and sensors

1

2

4

5

3

Machine front

Machine inside

6

7

Machine rear

Figure 2-2-2 Switches and sensors

1. DP interlock switch (DPILSW) ..................... Breaks the safety circuit when the document processor top cover is

opened; resets original misfeed detection.

2. Original set switch (OSSW) ......................... Detects the presence of an original.

3. DP timing switch (DPTSW) .......................... Detects the original scanning timing.

4. Original switchback switch (OSBSW) .......... Detects an original misfeed in the original switchback section.

5. Original size width switch (OSWSW) ........... Detects the width of the original.

6. Original size length switch (OSLSW) ........... Detects the length of the original.

7. DP open/close switch (OPOCSW)............... Detects the opening/closing of the DP.

2-2-2

(3) Motors

3MX

1

3

4

2

Machine front

Machine inside

Machine rear

Figure 2-2-3 Motors

1. Original feed motor (OFM) ........................... Drives the original feed section.

2. Original conveying motor (OCM) ................. Drives the original conveying section.

3. Original switchback motor (OSBM).............. Drives the original switchback section.

4. DP cooling fan motor (DPCFM) ................... Cools the drive section.

2-2-3

3MX

(4) Solenoids

2

1

Machine front

Machine inside

Machine rear

Figure 2-2-4 Solenoids

1. Switchback feedshift solenoid (SBFSSOL).. Operates the switchback feedshift guide.

2. Switchback pressure solenoid (SBPSOL).... Operates the switchback pulley.

2-2-4

2-3 Operation of the PWBs

2-3-1 DP main PWB

DPILSW

Machine

24 V

5 V

DPCFM

EPWB

R24 V

Cover open detection

Motor
driver

EEPROM

OFMOCM OSBM

Motor
driver

Motor
driver

3MX

SBPSOL

SBFSSOL

OSBSW

ORGVSYNC,SCLK,
SDO,SDI,RDY,SEL

Buffer

CPU

DPMPWB

Figure 2-3-1 DP main PWB block diagram

DPTSW

OSSW

OSWSW

OSLSW

DPOCSW

2-3-1

3MX

210

1

YC12

71

51

6

1

YC1YC2

4

45

11

YC7YC8

U4

YC11

3

YC10 YC6

1

3

1

2-3-2

1

YC5

5

6

YC4YC3

Figure 2-3-2 DP main PWB silk-screen diagram

18

YC9

1211

Connector Pin No. Signal I/O Voltage Description

YC1 1 FG - - Ground

Connected
to the
machine.

YC2 1 SDI I 0/5 V DC (pulse) Serial communication data signal

Connected
to the
machine.

YC3 1 B O 0/24 V DC (pulse) OFM drive control signal (B)

Connected
to the origi­nal feed
motor.

YC4 1 B O 0/24 V DC (pulse) OCM drive control signal (B)

Connected
to the origi­nal convey­ing motor
and original
switchback
motor.

YC5 1 24V O 24 V DC 24 V DC supply

Connected
to the DP
interlock
switch.

YC6 1 5V O 5 V DC 5 V DC supply

Connected
to the DP
timing
switch.

2 5V I 5 V DC 5 V DC supply

3 GND - - Ground

4 24V I 24 V DC 24 V DC supply

2 SDO O 0/5 V DC (pulse) Serial communication data signal

3 SCLK I 0/5 V DC (pulse) Serial communication clock signal

4 DPSEL I 0/5 V DC DP select signal

5 DPRDY O 0/5 V DC DP ready signal

6 ORGVSYNC O 5 V DC DP original scanning interval signal

7 GND - - Ground

8 GND - - Ground

9 GND - - Ground

10 GND - - Ground

2 COM_A(R24V) O 24 V DC 24 V DC supply

3 A O 0/24 V DC (pulse) OFM drive control signal (A)

4 _B O 0/24 V DC (pulse) OFM drive control signal (_B)

5 COM_B(R24V) O 24 V DC 24 V DC supply

6 _A O 0/24 V DC (pulse) OFM drive control signal (_A)

2 COM_A(R24V) O 24 V DC 24 V DC supply

3 A O 0/24 V DC (pulse) OCM drive control signal (A)

4 _B O 0/24 V DC (pulse) OCM drive control signal (_B)

5 COM_B(R24V) O 24 V DC 24 V DC supply

6 _A O 0/24 V DC (pulse) OCM drive control signal (_A)

7 B O 0/24 V DC (pulse) OSBM drive control signal (B)

8 COM_A(R24V) O 24 V DC 24 V DC supply

9 A O 0/24 V DC (pulse) OSBM drive control signal (A)

10 _B O 0/24 V DC (pulse) OSBM drive control signal (_B)

11 COM_B(R24V) O 24 V DC 24 V DC supply

12 _A O 0/24 V DC (pulse) OSBM drive control signal (_A)

2 N.C. - - Not used

3 R24V I 0/24 V DC 24 V DC supply

4 N.C. - - Not used

5 COV_OPN I 24/0 V DC DPILSW: On/Off

2 TMG SW I 0/5 V DC DPTSW: On/Off

3 GND - - Ground

3MX

2-3-3

3MX

Connector Pin No. Signal I/O Voltage Description

YC7 1 24V O 24 V DC 24 V DC supply

Connected
to the
switchback
presser
solenoid
and switch­back feed­shift
solenoid.

YC9 1 5V O 5 V DC 5 V DC supply

Connected
to the origi­nal switch­back switch,
original size
length
switch and
original size
width switch.

YC10 1 GND - - Ground

Connected
to original
set switch.

YC11 1 5V O 5 V DC 5 V DC supply

Connected
to DP cool­ing fan
motor.

2 ACT O 0/24 V DC SBPSOL (ACT): On/Offd

3 RET O 0/24 V DC SBPSOL (RET): On/Off

4 24V O 24 V DC 24 V DC supply

5 ACT O 0/24 V DC SBFSSOL: On/Off

2 REV SW I 0/5 V DC OSBSW: On/Off

3 GND - - Ground

4 SZ_SW_L I 0/5 V DC OSLSW: On/Off

5 5V O 5 V DC 5 V DC supply

6 GND - - Ground

7 SZ_SW_W I Analog OSWSW detection voltage

8 5V O 5 V DC 5 V DC supply

2 SET SW I 0/5 V DC OSSW: On/Off

3 5V O 5 V DC 5 V DC supply

2 N.C. - - Not used

3 N.C. - - Not used

4 N.C. - - Not used

5 GND - - Ground

2-3-4

2-4 Appendixes

List of maintenance parts

3MX

Maintenance part name

Name used in service man- Name used in parts list

Part No.

Alternative

part No.

Fig.

No.

Ref.

No.

DP for war ding p ull ey P ULL EY,L EAD ING FEED A DF 362 11110 - 3 41

DP feed pulley PULLEY PAPER FEED 3BR07040 - 3 45

DP separation pad PAD SEPARATION 303K507060 3K507060 3 57

Friction plate FRICTION PLATE,CASSETTE 2A107060 - 3 46

Conveying roller PARTS CONVEYING ROLLER ASSY SP 303K594010 3K594010 4 9

Conveying pulley PULLEY CONVEYING 3HL08080 - 3 61

Conveying pulley PULLEY CONVEYING 3HL08080 - 4 37

Conveying pulley PULLEY LOOP 3HL10140 - 4 46

Scanning guide GUIDE READING 303K524010 3K524010 2 17

Switchback roller PARTS ROLLER LOOP SP 303K594050 3K594050 4 19

Switchback pulley PULLEY LOOP 3HL10140 - 4 46

Eject roller PARTS ROLLER EJECT SP 303MX94010 3MX94010 4 18

Eject pulley PULLEY CONVEYING 3HL08080 - 4 37

Original holder mat PLARTE ORIGINAL 303JC04200 3JC04200 1 7

2-4-1

3MX

Periodic maintenance procedures

Section

Test copy
and test print

Maintenance
part/location

Perform at the maxi­mum copy size

Clean Every service.

Method Maintenance cycle Points and cautions Page

Section

Original feed
section

Section

Original con­veying sec­tion

Maintenance
part/location

DP forwarding pulley Replace 150K Replace (Clean with alcohol

DP feed pulley Replace 150K Replace (Clean with alcohol

DP separation pad Replace 150K Replace (Clean with alcohol

Friction plate Clean Every service. Clean with alcohol.

Maintenance
part/location

Conveying roller Clean Every service Clean with alcohol or a dry

Conveying pulley Check or

Scanning guide Clean Every service Clean with alcohol or a dry

Method Maintenance cycle Points and cautions Page

when user call occurs).

when user call occurs).

when user call occurs).

Method Maintenance cycle Points and cautions Page

cloth.

150K Clean with alcohol or a dry

clean

cloth if it is dirty.

cloth.

P. 1 -5 - 2

P. 1 -5 - 2

P. 1 -5 - 5

Section

Original
switchback
section

Section

Other Original holder mat Clean 150K Clean with alcohol or a dry

2-4-2

Maintenance
part/location

Switchback roller Clean Every service Clean with alcohol or a dry

Switchback pulley Check or

Eject roller Clean Every service Clean with alcohol or a dry

Eject r pulley Check or

Maintenance
part/location

Method Maintenance cycle Points and cautions Page

cloth.

150K Clean with alcohol or a dry

clean

150K Clean with alcohol or a dry

clean

Method Maintenance cycle Points and cautions Page

cloth if it is dirty.

cloth.

cloth if it is dirty.

cloth.

3MX

Section

Covers Covers Clean Every service Clean with alcohol.

*: Equipped with the machine.

Maintenance
part/location

Slit glass* Check or

Method Maintenance cycle Points and cautions Page

clean

Every service Clean with a dry cloth (do not

clean with a wet cloth or alco­hol).

2-4-3

3MX

Wiring diagram

SBPSOL

31

22

13

12345

12345

YC7

24V

ACT

SBFSSOL

21

12

24V

RET

ACT

OSWSW

SZ_SW_W

215V

12

1234567

8765432

YC9

5V

GND

SZ_SW_W

OSLSW

32132

32132

5V

GND

REV SW

SZ_SW_L

8

1

5V

OSBSW

1

1

YC10

OSSWOSSW

321

321

123

123

GND

SET SW

Machine

123456789

11

22

33

44

123456789

Shield

123

4

123456789

123

4

123456789

5V

YC1

FG

5V

GND

24V

YC2

SDI

SDO

SCLK

DPSEL

DPRDY

GND

GND

GND

ORGVSYNC

10111213141516

10111213141516

10

10

GND

YC3

6_A

16 1

SBPSOL

SBFSSOL

OFM

5 COM_B(R24V)

4_B

3A

2 COM_A(R24V)

1B

25 2

34 3

43 4

52 5

61 6

OSLSW

OSWSW

OSBM

YC4

9A

8 COM_A(R24V)

7B

6_A

12 _A

11 COM_B(R24V)

10 _B

123456789

65432165432

12345612345

5 COM_B(R24V)

OSBSW

OCM

4_B

3A

101112

YC5

2 COM_A(R24V)

1B

1

6

DPILSW

24V

N.C.

R24V

N.C.

12345

12345

Engine I/F

(power source)

DPTSW

COV_OPN5VTMG SW

YC6

123

321

1

123

GND5VN.C.

2

3

YC11

12345

54321

1

2

2

1

Engine I/F

DPCFM

N.C.

N.C.

(signal)

GND

DPMPWB

5V

FLMDO

FDI

YC12

1234567

FDO

FSCLK

RESETN

DPOCSW

GND

2-4-4

OFM

OSBM

OCM

N.O.

COM

DPILSW

N.C.

DPTSW

DPCFM

PF-420

First Edition

CONTENTS

1-1 Specifications

1-1-1 Specifications..........................................................................................................................................1-1-1

1-1-2 Parts names............................................................................................................................................1-1-2

1-1-3 Machine cross section ............................................................................................................................1-1-3

1-2 Installation

1-2-1 Installation environment ..........................................................................................................................1-2-1

1-2-2 Unpacking ...............................................................................................................................................1-2-2

(1) Unpacking .........................................................................................................................................1-2-2

(2) Remove the tapes and spacer ..........................................................................................................1-2-3

1-2-3 Installing the cassette heater (option) .....................................................................................................1-2-4

1-3 Maintenance Mode

1-3-1 Maintenance mode (operation panel is a 7-segment type) .....................................................................1-3-1

(1) Executing a maintenance item ..........................................................................................................1-3-1

(2) Maintenance mode item list...............................................................................................................1-3-2

(3) Contents of maintenance mode items...............................................................................................1-3-3

1-3-2 Maintenance mode (operation panel is an LCD type)...........................................................................1-3-13

(1) Executing a maintenance item ........................................................................................................1-3-13

(2) Maintenance mode item list.............................................................................................................1-3-14

(3) Contents of maintenance mode items.............................................................................................1-3-15

3MH

1-4 Troubleshooting

1-4-1 Paper misfeed detection .........................................................................................................................1-4-1

(1) Paper misfeed indication ...................................................................................................................1-4-1

(2) Paper misfeed detection conditions ..................................................................................................1-4-1

(3) Paper misfeeds .................................................................................................................................1-4-3

1-4-2 Self-diagnosis .........................................................................................................................................1-4-6

(1) Self-diagnostic function (operation panel is a 7-segment type).........................................................1-4-6

(2) Self diagnostic codes (operation panel is a 7-segment type)............................................................1-4-6

(3) Self-diagnostic function (operation panel is an LCD type) ................................................................1-4-7

(4) Self diagnostic codes (operation panel is an LCD type)....................................................................1-4-7

1-4-3 Image formation problems ......................................................................................................................1-4-8

(1) The leading edge of the image is consistently misaligned with the original. .....................................1-4-8

(2) The leading edge of the image is sporadically misaligned with the original. .....................................1-4-8

(3) Image center does not align with the original center. ........................................................................1-4-8

1-4-4 Electric problems ....................................................................................................................................1-4-9

1-4-5 Mechanical problems ............................................................................................................................1-4-11

1-5 Assembly and Disassembly

1-5-1 Precautions for assembly and disassembly............................................................................................1-5-1

(1) Precautions .......................................................................................................................................1-5-1

1-5-2 Paper feed section..................................................................................................................................1-5-2

(1) Detaching and refitting the feed roller ...............................................................................................1-5-2

(2) Detaching and refitting the cassette separation pulley......................................................................1-5-3

(3) Detaching and refitting the cassette forwarding pulley and cassette paper feed pulley....................1-5-5

2-1 Mechanical Construction

2-1-1 Mechanical construction .........................................................................................................................2-1-1

2-2 Electrical Parts Layout

2-2-1 Electrical parts layout..............................................................................................................................2-2-1

(1) PWBs ................................................................................................................................................2-2-1

(2) Switches and sensors .......................................................................................................................2-2-2

(3) Others................................................................................................................................................2-2-3

2-3 Operation of the PWBs

2-3-1 Cassette main PWB................................................................................................................................2-3-1

3MH

2-4 Appendixes

List of maintenance parts........................................................................................................................2-4-1

Periodic maintenance procedures ..........................................................................................................2-4-1

Wiring diagram........................................................................................................................................2-4-2

1-1 Specifications

1-1-1 Specifications

Paper supply method......................Friction retard method

Paper weight...................................64 to 105 g/m

Paper types..................................... Standard, recycled

Paper size.......................................A3, B4, A4, A4R, B5, B5R, A5R, Folio, Ledger, Legal, OficioII, Letter, LetterR,

StatementR, 8K, 16K

Paper capacity ................................ 300 sheets (80 g/m

Power source..................................Electrically connected to the machine.

Dimensions .....................................568 (W) x 546 (D) x 135 (H) mm

3/8" (W) x 21 1/2" (D) x 5 5/16" (H)

22

Weight.............................................6 kg/13.2 lbs

NOTE: These specifications are subject to change without notice.

2

2

)

3MH

1-1-1

3MH

1-1-2 Parts names

2

4

3

3

1

Figure 1-1-1

1. Cassette

2. Cassette left cover

3. Paper width guides

4. Paper length guide

1-1-2

1-1-3 Machine cross section

Paper path

3MH

Figure 1-1-2 Machine cross section

1-1-3

3MH

This page is intentionally left blank.

1-1-4

3MH

1-2 Installation

1-2-1 Installation environment

Installation location (Be based on the machine establishment place.)

Avoid direct sunlight or bright lighting. Ensure that the photoconductor will not be exposed to direct sunlight or other strong
light when removing paper jams.
Avoid locations subject to high temperature and high humidity or low temperature and low humidity; an abrupt change in
the environmental temperature; and cool or hot, direct air.
Avoid places subject to dust and vibrations.
Choose a surface capable of supporting the weight of the machine.

Place the machine on a level surface (maximum allowance inclination: 1
Avoid air-borne substances that may adversely affect the machine or degrade the photoconductor, such as mercury, acidic
of alkaline vapors, inorganic gasses, NOx, SOx gases and chlorine-based organic solvents.
Select a well-ventilated location.

°).

1-2-1

3MH

1-2-2 Unpacking

(1) Unpacking

Figure 1-2-1 Unpacking

1. Paper feeder

2. Outer case

3. Bottom left pad

4. Bottom right pad

5. Top left pad

6. Top right pad

7. Plastic sheet

8. Plastic bag

9. Plastic bag

Caution: Place the machine on a level surface. See the Installation Guide for installation.

1-2-2

10. Cover labels

11. Plastic bag

12. Screw M3 x 8

13. Screw M3 x 12

14. Connector cover

15. Cursor pins

16. Cassette size label

17. Installation guide

18. Bar code labels

(2) Remove the tapes and spacer

3MH

Procedure

1. Remove two tapes.

2. Remove the spacer.

3. Pull the cassette out and remove the tape.

4. Push the cassette back in.

Spacer

Ta pe

Ta pe

Figure 1-2-2

Ta pe

Figure 1-2-3

1-2-3

3MH

1-2-3 Installing the cassette heater (option)

Installing the cassette heater requires the following component:

Cassette heater (P/N 303MH94060): for 220 to 240 V specifications only
Cassette heater (P/N 303MH94050): for 120 V specifications
One (1) M3 x 8 P tight screw (P/N 7BB202308H)

Procedure

1. Remove the screw and the pin and then
remove the cassette rear cover.

2. Pull out the cassette.

Screw

Cassette rear cover

Pin

3. Pass the cassette heater cable through the
hole at the machine rear side.

4. Insert the stay of the cassette heater into the
hole at the machine rear side.

5. Attach the cassette heater using the M3 x 8
P tight screw.

Stay

Figure 1-2-4

Cassette
heater cable

Cassette heater

M3 x 8
P tight screw

1-2-4

Figure 1-2-5

6. Connect the connector of the cassette
heater cable to the connector of the
machine.

7. Refit all the removed parts.

3MH

Connector

Cassette heater cable

Figure 1-2-6

1-2-5

3MH

This page is intentionally left blank.

1-2-6

1-3 Maintenance Mode

1-3-1 Maintenance mode (operation panel is a 7-segment type)

The machine is equipped with a maintenance function which can be used to maintain and service the machine.

(1) Executing a maintenance item

Start

3MH

Yes

Enter “10871087” using

the numeric keys.

Enter the maintenance item

number using the zoom

+/- keys or numeric keys.

Press the start key.

The selected maintenance item is run.

Press the stop/clear key.

Repeat the same

maintenance item?

Maintenance mode is entered.

The maintenance item is
selected.

Yes

No

Run another maintenance

item?

No

Enter “001” using the

or numeric keys

+/- keys

zoom

and press the start key.

End

Maintenance mode is exited.

1-3-1

3MH

(2) Maintenance mode item list

Section

Item

No.

Content of maintenance item

Initial

setting*

General U019 Displaying the ROM version -

Drive, paper
feed and
paper convey­ing system

U030 Checking motor operation -

U031 Checking switches for paper conveying -

U032 Checking clutch operation -

U034 Adjusting the print start timing

Adjusting the leading edge registration
Adjusting the center line
Adjusting the trailing edge margin
Adjusting the leading edge registration

2.8/0.0/0.0/0.0/0.0/0.8

-2.4/0.0/0.0/0.0/0.0/0.0

2.0

2.0/2.0/2.0/2.0/2.0/2.0

U051 Adjusting the deflection in the paper 30/20/ 0/ -20/ -20/20

U053 Performing fine adjustment of the motor speed 0.3/0.7/-0.5/0/0/0/0.5

-0.1/-0.1/-0.3

Mode setting U341 Specific paper feed location setting for printing function -

Other U901 Checking/clearing copy counts by paper feed locations -

*1

*1

*1

*1

*1

*1

*1

*Initial setting for executing U020, *1: The item initialized for executing U020, *2: The item initialized for executing U021

1-3-2

(3) Contents of maintenance mode items

3MH

Maintenance

item No.

U019

Description

Displaying the ROM version
Description

Displays the part number of the ROM fitted to each board.

Purpose

To check the part number or to decide if the ROM version is new from the last digit of the number.

Method

1. Press the start key.

2. Select the item to be displayed using the image mode selection key and exposure adjustment keys.

Image mode LEDs

Exposure
indicator

Exp. 1 (lit)
Exp. 2 (lit)
Exp. 3 (lit)
Exp. 4 (lit)

Exp. 1 (lit)
Exp. 2 (lit)
Exp. 3 (lit)
Exp. 4 (lit)
Exp. 5 (lit)
Exp. 1 (flashing)

Exp. 1 (lit)
Exp. 2 (lit)
Exp. 3 (lit)
Exp. 4 (lit)
Exp. 5 (lit)

Copy quantity display

“A” Part Code: Main PWB
Change history of the main PWB
Number of the main ROM
Number of the main ROM sub

“E” Part Code: Engine PWB
Change history of the engine PWB
Number of the engine ROM
Number of the engine ROM sub
Change history of the engine PWB BOOT
Number of the engine PWB BOOT

“L” Part Code: Language
Change history of the standard language
Number of the standard language ROM
Change history of the optional language
Number of the optional language ROM

Exp. 1 (lit)
Exp. 2 (lit)
Exp. 3 (lit)
Exp. 4 (lit)

Exp. 1 (lit)
Exp. 2 (lit)

Exp. 1 (lit)
Exp. 2 (lit)
Exp. 3 (lit)

: Off, : On, : Flashing

When the optional equipment is not installed, [non] is displayed.

Completion

Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.

“C” Part Code: Cassette
Number of the first paper feeder ROM
Number of the second paper feeder ROM
Number of the third paper feeder ROM

“d” Part Code: DP
Number of the optional DP ROM

“P” Part Code: Printer
Change history of the optional printer
Number of the optional printer ROM

1-3-3

3MH

Maintenance

item No.

U030

U031

Description

Checking motor operation
Description

Drives each motor.

Purpose

To check the operation of each motor.

Method

1. Press the start key.

2. Select the motor to be operated using the exposure adjustment keys.

Display Motor

A Drive motor (DM) is turned ON

2F Drum motor (DRM) is turned ON

F1 Cassette drive motor 1 (CDM1) is turned ON

F2 Cassette drive motor 2 (CDM2) is turned ON

F3 Cassette drive motor 3 (CDM3) is turned ON

EJ1 Eject motor (EM) forward rotation is turned ON

EJ2 Eject motor (EM) reverse rotation is turned ON

3. Press the start key. The selected motor operates.

4. To stop operation, press the stop/reset key.

Completion

Press the stop/clear key after operation stops. The screen for selecting a maintenance item No. is displayed.

Checking switches for paper conveying
Description

Displays the on-off status of each paper detection switch on the paper path.

Purpose

To check if the switches for paper conveying operate correctly.

Method

1. Press the start key.

2. Turn each switch on and off manually to check the status. When the on-status of a switch is detected,
the original size indicator corresponding to the operated switch lights.

Original size indicator Switch

A3R/Ledger Eject switch (ESW)

A4R/Legal Registration switch (RSW)

A5R/Legal Cassette feed switch 1 (CFSW1)

A4/Letter-R Cassette feed switch 2 (CFSW2)

B4R/Letter Feedshift switch (FSSW)

B5R/Statement Duplex paper conveying switch (DUPPCSW) (option)

Completion

Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.

1-3-4

3MH

Maintenance

item No.

U032

Description

Checking clutch operation
Description

Turns each clutch or solenoid on.

Purpose

To check the operation of each clutch or solenoid.

Method

1. Press the start key.

2. Select the clutch or solenoid to be operated using the exposure adjustment keys.

3. Press the start key. The selected clutch turns on for 1 s.

Display Clutch

P1 Paper feed clutch (PFCL)

Pb MP solenoid (MPSOL)

A1 Registration clutch (RCL)

d1 Duplex feed clutch (DUPFCL)

P2 Cassette paper feed clutch 1 (CPFCL1)

P3 Cassette paper feed clutch 2 (CPFCL2)

P4 Cassette paper feed clutch 3 (CPFCL3)

Completion

Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.

1-3-5

3MH

Maintenance

item No.

U034

Description

Adjusting the print start timing
Description

Adjusts the leading edge registration, center line or trailing edge margin.

Purpose

Make the adjustment if there is a regular error between the leading edges of the copy image and original.
Make the adjustment if there is a regular error between the center lines of the copy image and original.
Make the adjustment if there is a regular error between the trailing edges of the copy image and original.

Method

1. Press the start key.

2. Select the item using the image mode selection key.

Image mode LEDs
(group No.)

Description

1 Leading edge registration adjustment

2 Center line adjustment

3 Trailing edge margin adjustment

4 Leading edge registration adjustment for printer

: Off, : On, : Flashing

Adjustment: leading edge registration adjustment

1. Select group 1 using the image mode selection key.

2. Select the item using the exposure adjustment keys.

Exposure
indicator

Description Setting

range

Initial
setting

Exp. 1 (lit) Paper feed from cassette -5.0 to 10.0 2.8 0.1 mm

Exp. 2 (lit) Paper feed from MP tray -5.0 to 10.0 0.0 0.1 mm

Exp. 3 (lit) Paper feed from first paper feeder -5.0 to 10.0 0.0 0.1 mm

Exp. 4 (lit) Paper feed from second paper

-5.0 to 10.0 0.0 0.1 mm

feeder

Exp. 5 (lit) Paper feed from third paper

-5.0 to 10.0 0.0 0.1 mm

feeder

Exp. 1 (flashing) Duplex mode -5.0 to 10.0 0.8 0.1 mm

3. Press the interrupt key.

4. Press the start key to output a test pattern.

5. Change the setting value using the zoom +/- keys.
For output example 1, decrease the value. For output example 2, increase the value.

Leading edge registration (20 ± 1.0 mm)

Change in
value per step

1-3-6

Correct image Output

example 1

Figure 1-3-1

Output

example 2