Olivetti PF-720 Service Manual

PF-720

Option Copier

SERVICE MANUAL

Code Y112020-4

PUBLICATION ISSUED BY:

Olivetti S.p.A.

77, Via Jervis - 10015 Ivrea (TO)
Italy

Copyright © 2010, Olivetti
All rights reserved

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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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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) Precaution for unpacking...................................................................................................................1-2-2

(2) Unpacking .........................................................................................................................................1-2-3

(3) Remove the tapes .............................................................................................................................1-2-4

1-2-3 Installing the cassette heater (option) .....................................................................................................1-2-5

1-3 Maintenance Mode

1-3-1 Maintenance mode .................................................................................................................................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

1-4 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 .........................................................................................................................................1-4-5

(1) Self-diagnostic function .....................................................................................................................1-4-5

(2) Self diagnostic codes ........................................................................................................................1-4-5

1-4-3 Electric problems ....................................................................................................................................1-4-7

1-4-4 Mechanical problems ..............................................................................................................................1-4-9

3LM-1

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 forwarding, paper feed and separation pulleys ......................................1-5-2

(2) Detaching and refitting PF paper size width switch 1, 2 ....................................................................1-5-5

(3) Detaching and refitting the PF paper conveying clutch and PF paper feed clutch 1/2 ......................1-5-7

(4) Adjusting the position of the rack adjuster.......................................................................................1-5-10

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

2-3 Operation of the PWBs

2-3-1 PF main PWB .........................................................................................................................................2-3-1

2-4 Appendixes

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

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

Wiring diagram........................................................................................................................................2-4-3

3LM

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3LM

1-1 Specifications

1-1-1 Specifications

Paper supply method...................... Friction feed (No. sheets: 500, 80 g/m2, 2 cassettes)

Paper size.......................................A3, B4, A4, A4R, B5R, A5R, Folio, Ledger, Legal, OficioII, 8.5 x 13.5", Letter, LetterR,

Excutive, ExcutiveR, StatementR, 8K, 16K, 16KR

Paper weight...................................60 to 163 g/m

2

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

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

Dimensions .....................................585 (W) x 590 (D) x 315 (H) mm

5/16" (W) x 23 1/4" (D) x 12 3/8" (H)

23

Weight.............................................Approx. 26 kg/Approx. 57 lbs

NOTE: These specifications are subject to change without notice.

Y112020-4 Service Manual

1-1-1

3LM

1-1-2 Parts names

1

2

6

4

4

Figure 1-1-1

1. Left cover 4

2. Cassette 3

3. Cassette 4

4. Paper width guides

5. Paper width adjusting tab

6. Paper length guide

3

5

1-1-2

Service Manual Y112020-4

1-1-3 Machine cross section

3LM

Figure 1-1-2 Machine cross section

Paper path

Y112020-4 Service Manual

1-1-3

3LM

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1-1-4

Service Manual Y112020-4

3LM

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 photo-conductor will not be exposed to direct sunlight or other
strong light when removing paper jams.
Avoid extremes of temperature and humidity, abrupt ambient temperature changes, and hot or cold air directed onto the
machine.
Avoid dust and vibration.
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 photo-conductor, such as mercury,
acidic of alkaline vapors, inorganic gasses, NOx, SOx gases and chlorine-based organic solvents.
Select a room with good ventilation.

Y112020-4 Service Manual

1-2-1

3LM

1-2-2 Unpacking

(1) Precaution for unpacking

Hold the positions shown in the figure and remove the paper feeder from the outer case.

Figure 1-2-1

1-2-2

Service Manual Y112020-4

(2) Unpacking

3LM

1. Paper feeder

2. Outer case

3. Inner case

4. Bottom left pad

5. Bottom right pad

6. Upper left pad

7. Upper right pad

8. Plastic sheet

9. Plastic bag

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

Y112020-4 Service Manual

Figure 1-2-2 Unpacking

10. Installation guide

11. Paper size plates

12. Plastic bag

13. Retainer

14. S tight screw M4 x 10

15. Pins

16. Cursor pins

17. Bar code labels

1-2-3

3LM

(3) Remove the tapes

Procedure

1. Remove three tapes.

Tape

Tape

Tape

Figure 1-2-3

1-2-4

Service Manual Y112020-4

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

Installing the cassette heater requires the following component:

Cassette heater (P/N AVGR12892C): for 220 to 240 V specifications only

Two (2) M4 x 10 S tight screws

Procedure

1. Press the power key on the operation panel
to off. Make sure that the power indicator
and the memory indicator are off before
turning off the main power switch. And then
unplug the power cable from the wall outlet.

2. Remove cassette 3 and 4.

3. Attach the cassette heater using the two M4
x 10 S tight screws.

4. Fasten the cassette heater wire to four wire
saddles.

5. Connect the connector of cassette heater
wire to the connector of the machine.

6. Refit the cassete 3 and 4.

3LM-1

Connector

Connector

Wire saddles

Cassette heater

Cassette
heater wire

Screw

Figure 1-2-4

Wire saddle

Screw

Y112020-4 Service Manual

1-2-5

3LM

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1-2-6

Service Manual Y112020-4

1-3 Maintenance Mode

1-3-1 Maintenance mode

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

(1) Executing a maintenance item

Start

3LM

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 key.

Repeat the same

maintenance item?

No

Maintenance mode is entered.

The maintenance item is
selected.

Yes

Y112020-4 Service Manual

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.

1-3-1

3LM-1

(2) Maintenance mode item list

Section

General U019 Displaying the ROM version -

Drive, paper
feed and
paper convey­ing system

Operation
panel and
support
equipment

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

Other U901 Checking copy counts by paper feed locations -

Item

No.

U034 Adjusting the print start timing

LSUOUT TOP
LSUOUT LEFT
LSUOUT TOP B/W

U247 Setting the paper feed device -

Content of maintenance item

0/0/0/0/0/0/0/0/0/0/0/0

Initial

setting*

0/0/0/0/0/0
0/0/0/0/0/0

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

1-3-2

Service Manual Y112020-4

(3) Contents of maintenance mode items

3LM-1

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 IC

MMI Operation ROM IC

ENGINE Engine ROM IC

ENGINE BOOT Engine booting

SCANNER Scanner ROM IC

BROWSER Browser ROM IC

OPTION LANGUAGE Optional language ROM IC

DICTIONARY -

DBA Database connection

Solution Framework

MOTOR CPU Motor CPU

MOTOR CPU BOOT Motor CPU booting

H VLT CPU High voltage CPU

H VLT CPU BOOT High voltage CPU booting

SLEEP CPU Sleep CPU

SLEEP CPU BOOT Sleep CPU booting

DP Optional DP ROM IC

500x2PF Paper feeder ROM IC

3000PF Optional 3000-sheet paper feeder ROM IC

1000DF Optional document finisher ROM IC

3000DF MAIN Optional 3000-sheet document finisher main ROM IC

3000DF MIDDLE Optional 3000-sheet document finisher Inner tray ROM IC

MAIL BOX Optional mailbox ROM IC

BOOKLET Optional center-folding unit ROM IC

FAX BOOT1 Optional fax control PWB booting (port 1)

FAX APL1 Optional fax control PWB APL (port 1)

FAX IPL1 Optional fax control PWB IPL (port 1)

FAX BOOT2 Fax control PWB booting (port 2: optional dual FAX)

FAX APL2 Fax control PWB APL (port 2: optional dual FAX)

FAX IPL2 Fax control PWB IPL (port 2: optional dual FAX)

Framework

Completion

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

Y112020-4 Service Manual

1-3-3

3LM

Maintenance

item No.

U034

Description

Adjusting the print start timing
Description

Adjusts the leading edge registration or center line.

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.

Method

1. Press the start key.

2. Select the item to be adjusted.

Display Description

LSUOUT TOP Leading edge registration adjustment

LSUOUT LEFT Center line adjustment

LSUOUT TOP B/W Leading edge registration adjustment in black/white mode

Adjustment: Leading edge registration adjustment

1. Select [LSUOUT TOP] or [LSUOUT TOP B/W].

2. Select the item.
When [LSUOUT TOP] is selected.

Display Description Setting

range

LSUOUT TOP
MPT (L)

LSUOUT TOP
MPT Half (L)

LSUOUT TOP
CAS (L)

LSUOUT TOP
CAS Half (L)

LSUOUT TOP
DUP (L)

LSUOUT TOP
DUP Half (L)

LSUOUT TOP
MPT (S)

LSUOUT TOP
MPT Half (S)

LSUOUT TOP
CAS (S)

LSUOUT TOP
CAS Half (S)

LSUOUT TOP
DUP (S)

LSUOUT TOP
DUP Half (S)

Large size: 218 mm or more in width of paper.

Paper feed from MP tray
(when large size paper is used)

Paper feed from MP tray
(when large size thick paper is used)

Paper feed from cassette
(when large size paper is used)

Paper feed from cassette
(when large size thick paper is used)

Duplex mode (second)
(when large size paper is used)

Duplex mode (second)
(when large size thick paper is used)

Paper feed from MP tray
(when small size paper is used)

Paper feed from MP tray
(when small size thick paper is

Paper feed from cassette
(when small size paper is used)

Paper feed from cassette
(when small size thick paper is

Duplex mode (second)
(when small size paper is used)

Duplex mode (second)
(when small size thick paper is

-3.0 to 3.0 0 0.1 mm

-3.0 to 3.0 0 0.1 mm

-3.0 to 3.0 0 0.1 mm

-3.0 to 3.0 0 0.1 mm

-3.0 to 3.0 0 0.1 mm

-3.0 to 3.0 0 0.1 mm

-3.0 to 3.0 0 0.1 mm

-3.0 to 3.0 0 0.1 mm

-3.0 to 3.0 0 0.1 mm

-3.0 to 3.0 0 0.1 mm

-3.0 to 3.0 0 0.1 mm

-3.0 to 3.0 0 0.1 mm

Default
setting

Change in
value per step

1-3-4

Service Manual Y112020-4

3LM-1

Maintenance

item No.

U034 When [LSUOUT TOP B/W] is selected.

Display Description Setting

LSUOUT TOP
MPT (L) B/W

LSUOUT TOP
CAS (L) B/W

LSUOUT TOP
DUP (L) B/W

LSUOUT TOP
MPT (S) B/W

LSUOUT TOP
CAS (S) B/W

LSUOUT TOP
DUP (S) B/W

Paper feed from MP tray
(when large size paper is used)

Paper feed from cassette
(when large size paper is used)

Duplex mode (second)
(when large size paper is used)

Paper feed from MP tray
(when small size paper is used)

Paper feed from cassette
(when small size paper is used)

Duplex mode (second)
(when small size paper is used)

Large size: 218 mm or more in width of paper.

3. Press the system menu key.

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

5. Press the system menu key.

6. Change the setting value using the +/- or numeric keys.
For output example 1, increase the value. For output example 2, decrease the value.

Description

range

Default
setting

Change in
value per step

-3.0 to 3.0 0 0.1 mm

-3.0 to 3.0 0 0.1 mm

-3.0 to 3.0 0 0.1 mm

-3.0 to 3.0 0 0.1 mm

-3.0 to 3.0 0 0.1 mm

-3.0 to 3.0 0 0.1 mm

Leading edge
registration
(20 ± 1.5 mm)

Correct image

Output

example 1

Output

example 2

Figure 1-3-1

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

Remark

When changing the setting value of [Large] each item is modified, equal to amount of the value which is
changed adds also the value of [Small] each item and is pulled.

Caution

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

U034

(See the service manual

U066

for the machine.)

(See the service manual

U071

for the machine.)

Y112020-4 Service Manual

1-3-5

3LM-1

Maintenance

item No.

U034

Description

Adjustment: Center line adjustment

1. Select the item.

Display Description Setting

range

LSUOUT LEFT

Paper feed from MP tray -3.0 to 3.0 0 0.1 mm

(MPT)

LSUOUT LEFT

Paper feed from cassette 1 -3.0 to 3.0 0 0.1 mm

(CAS 1)

LSUOUT LEFT

Paper feed from cassette 2 -3.0 to 3.0 0 0.1 mm

(CAS 2)

LSUOUT LEFT

Paper feed from cassette 3 -3.0 to 3.0 0 0.1 mm

(CAS 3)

LSUOUT LEFT

Paper feed from cassette 4 -3.0 to 3.0 0 0.1 mm

(CAS 4)

LSUOUT LEFT

Duplex mode (second) -3.0 to 3.0 0 0.1 mm

(DUP)

2. Press the system menu key.

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

4. Press the system menu key.

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

Center line of printing
(within ± 0.5 mm)

Default
setting

Change in
value per step

1-3-6

Correct image

Output

example 1

Output

example 2

Figure 1-3-2

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

Remark

If the setting value for feeding from the MP tray is changed, the difference from the former value is added to or
subtracted from the values of other items.

Caution

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

U034

(See the service manual

U067

for the machine.)

(See the service manual

U072

for the machine.)

Completion

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

Service Manual Y112020-4

3LM

Maintenance

item No.

U247

U341

Description

Setting the paper feed device
Description

Turns on motor and clutches of 3000-sheet paper feeder.

Purpose

To check the operation of motor and clutches of paper feed device.

Method

1. Press the start key. The value varies depending to the option furnished.

2. Select the item to be operated.

3. Pess the start key. The operation starts.

Display Motor and clutches Operation

DESK FEED PF drive motor (PFDM) In operation

CLUTCH FEED PF feed clutch (PFFCL) On for 1 s

CLUTCH U PF paper feed clutch 1 (PFPFCL1) On for 1 s

CLUTCH L PF paper feed clutch 2 (PFPFCL2) On for 1 s

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

Completion

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

Specific paper feed location setting for printing function
Description

Sets a paper feed location specified for printer output (only if a printer kit is installed).

Purpose

To use a paper feed location only for printer output.
A paper feed location specified for printer output cannot be used for copy output.

Method

1. Press the start key.

2. Select the paper feed location for the printer.
Two or more cassette can be selected.

Display Description

CASSETTE 1 Cassette 1

CASSETTE 2 Cassette 2

CASSETTE 3 Cassette 3

CASSETTE 4 Cassette 4

LCF Optional 3000-sheet paper feeder

When an optional paper feed device is not installed, the corresponding count is not displayed.

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

Completion

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

Y112020-4 Service Manual

1-3-7

3LM-1

Maintenance

item No.

U901

Description

Checking copy counts by paper feed locations
Description

Displays or clears copy counts by paper feed locations.

Purpose

To check the time to replace consumable parts.

Method

1. Press the start key. The counts by paper feed locations are displayed.

Display Description

MP TRAY MP tray

CASETTE 1 Cassette 1

CASETTE 2 Cassette 2

CASETTE 3 Cassette 3 (paper feeder)

CASETTE 4 Cassette 4 (paper feeder)

DUPLEX Duplex unit

LCF Optional 3000-sheet paper feeder

When an optional paper feed device is not installed, the corresponding count is not displayed.

Clearing

1. Select the counts to be cleared.
CASETTE 3, CASETTE 4 and LCF cannot be cleared.

2. Select the counts for all and press [ALL CLEAR].

3. Press the start key. The counts is cleared.

Completion

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

1-3-8

Service Manual Y112020-4

1-4 Troubleshooting

1-4-1 Paper misfeed detection

(1) Paper misfeed indication

When a paper misfeed occurs, the machine immediately stops copying and displays the jam location on the operation
panel.
Paper misfeed detection can be reset by opening and closing the left cover 3 to turn left cover 3 switch off and on.

(2) Paper misfeed detection conditions

FSW3

PFCCL

PFPFCL1

3LM

PFFSW

PFPFCL2

Figure 1-4-1

Y112020-4 Service Manual

1-4-1

3LM

Section Jam code Conditions

Paper
feed sec­tion

12
No paper feed from
cassette 3

13
No paper feed from
cassette 4

19
Misfeed in paper
feeder paper con­veying section

24
Multiple sheets in
cassette 3 paper
feed section

25
Multiple sheets in
cassette 4 paper
feed section

Feed switch 3 (FSW3) does not turn on within the
specified time of PF paper feed clutch 1 (PFPFCL1)
turning on and cannot be detected at the same tim­ing even after retry.

The PF feed switch (PFFSW) does not turn on
within the specified time of PF paper feed clutch 2
(PFPFCL2) turning on and cannot be detected at the
same timing even after retry.

Feed switch 3 (FSW3) does not turn on within speci­fied time of PF feed switch (PFFSW) turning on.

Feed switch 3 (FSW3) does not turn off within speci­fied time of its turning on.

The PF feed switch 1 (PFFSW) does not turn off
within specified time of its turning on.

Specified time

25/25 ppm
30/30 ppm

2853 ms 2324 ms 2112 ms

2853 ms 2324 ms 2112 ms

1134 ms 810 ms 680 ms

1136 ms 812 ms 682 ms

1136 ms 812 ms 682 ms

40/40 ppm
50/40 ppm

Color

50/40 ppm

B/W

1-4-2

Service Manual Y112020-4

(3) Paper misfeeds

3LM

Problem

(1)
A paper jam in the
paper feed section is
indicated during
copying (no paper
feed from cassette

3).
Jam code 12

(2)
A paper jam in the
paper feed section is
indicated during
copying (no paper
feed from cassette

4).
Jam code 13

(3)
A paper jam in the
paper feed section is
indicated during
copying (misfeed in
paper feeder vertical
paper conveying sec­tion).
Jam code 19

Causes/check procedures

Paper is extremely curled. Change the paper.

Check if the paper feed pul­ley, forwarding pulley and
separation pulley of cas­sette 3 are deformed.

Broken feed switch 3 actua­tor.

Defective feed switch 3. Run maintenance item U031 and turn feed switch 3 on and off

Check if PF paper feed
clutch 1 malfunctions.

Electrical problem with PF
paper feed clutch 1.

Paper is extremely curled. Change the paper.

Check if the paper feed pul­ley, forwarding pulley and
separation pulley of cas­sette 4 are deformed.

Broken PF feed switch
actuator.

Defective PF feed switch. With 5 V DC present at YC3-7 on the PF main PWB, check if YC3-

Check if PF paper feed
clutch 2 malfunctions.

Electrical problem with PF
paper feed clutch 2.

Broken feed switch 3 actua­tor.

Defective feed switch 3. Run maintenance item U031 and turn feed switch 3 on and off

Check visually and replace any deformed pulleys.

Check visually and replace switch.

manually. Replace the switch if indication of the corresponding
switch on the touch panel is not displayed in reverse.

Run maintenance item U247 and select PF paper feed clutch 1 on
the touch panel to be turned on and off. Check the status and rem­edy if necessary.

Check (see page 1-4-7).

Check visually and replace any deformed pulleys.

Check visually and replace switch.

5 on the PF main PWB remains low or high when the PF feed
switch is turned on and off. If it does, replace the PF feed switch.

Run maintenance item U247 and select PF paper feed clutch 2 on
the touch panel to be turned on and off. Check the status and rem­edy if necessary.

Check (see page 1-4-7).

Check visually and replace switch.

manually. Replace the switch if indication of the corresponding
switch on the touch panel is not displayed in reverse.

Corrective measures

Y112020-4 Service Manual

1-4-3

3LM

Problem

(4)
A paper jam in the
paper feed section is
indicated during
copying (multiple
sheets in cassette 3).
Jam code 24

(5)
A paper jam in the
paper feed section is
indicated during
copying (multiple
sheets in cassette 4).
Jam code 25

Causes/check procedures

Broken feed switch 3 actua­tor.

Defective feed switch 3. Run maintenance item U031 and turn feed switch 3 on and off

Defective feed pulleys or
feed rollers.

Defective PF paper feed
clutch 1.

Electrical problem with PF
paper feed clutch 1.

Broken PF feed switch
actuator.

Defective paper feeder feed
switch.

Defective feed pulleys or
feed rollers.

Defective PF paper feed
clutch 2.

Electrical problem with PF
paper feed clutch 2.

Check visually and replace switch.

manually. Replace the switch if indication of the corresponding
switch on the touch panel is not displayed in reverse.

Check visually and replace.

Run maintenance item U247 and select PF paper feed clutch 1 on
the touch panel to be turned on and off. Check the status and rem­edy if necessary.

Check (see page 1-4-7).

Check visually and replace switch.

With 5 V DC present at YC3-7 on the PF main PWB, check if YC3­5 on the PF main PWB remains low or high when the PF feed
switch is turned on and off. If it does, replace the PF feed switch.

Check visually and replace.

Run maintenance item U247 and select PF paper feed clutch 2 on
the touch panel to be turned on and off. Check the status and rem­edy if necessary.

Check (see page 1-4-7).

Corrective measures

1-4-4

Service Manual Y112020-4

3LM-1

1-4-2 Self-diagnosis

(1) Self-diagnostic function

This unit is equipped with a self-diagnostic function. When a problem is detected, copying is disabled and the problem dis­played as a code consisting of C followed by a number, indicating the nature of the problem. A message is also displayed
requesting the user to call for service.
After removing the problem, the self-diagnostic function can be reset by turning cover switch off and back on.

(2) Self diagnostic codes

Remarks

Code Contents

C1030 PF lift motor 1 error

After cassette 3 is inserted, PF lift switch
1 does not turn on within 12 s. This error
is detected two times successively.
During driving the motor, the lift overcur­rent protective monitor signal is detected
for 500 ms or more two times succes­sively. However, the first 1 s after PF lift
motor 1 is turned on is excluded from
detection.

C1040 PF lift motor 2 error

After cassette 4 is inserted, PF lift switch
2 does not turn on within 12 s. This error
is detected two times successively.
During driving the motor, the lift overcur­rent protective monitor signal is detected
for 500 ms or more two times succes­sively. However, the first 1 s after PF lift
motor 2 is turned on is excluded from
detection.

C1800 Paper feeder communication error

A communication error from paper
feeder is detected 10 times in succes­sion.

Causes Check procedures/corrective measures

Poor contact in the
connector termi­nals.

Broken gears or
couplings of PF lift
motor 1.

Defective PF lift
motor 1.

Defective PF lift
switch 1.

Poor contact in the
connector termi­nals.

Broken gears or
couplings of PF lift
motor 2.

Defective PF lift
motor 2.

Defective PF lift
switch 2.

Poor contact in the
connector termi­nals.

Defective PWB. Replace the PF main PWB or engine PWB

Check the connection of connector YC27 on
the engine PWB and the connector on the
PF main PWB, and the continuity across the
connector terminals. Repair or replace if
necessary.

Replace PF lift motor 1.

Check for continuity across the coil. If none,
replace PF lift motor 1.

Check if YC1-7 on the PF main PWB goes
low when PF lift switch 1 is turned off. If not,
replace PF lift switch 1.

Check the connection of connector YC27 on
the engine PWB and the connector on the
PF main PWB, and the continuity across the
connector terminals. Repair or replace if
necessary.

Replace PF lift motor 2.

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

Check if YC1-9 on the PF main PWB goes
low when PF lift switch 2 is turned off. If not,
replace PF lift switch 2.

Check the connection of connector YC27 on
the engine PWB and the connector on the
PF main PWB, and the continuity across the
connector terminals. Repair or replace if
necessary.

and check for correct operation.

Y112020-4 Service Manual

1-4-5

3LM-1

Code Contents

C1900 Paper feeder EEPROM error

When writing the data, the write data and
the read data is not continuously in
agreement three times.

C2600 PF paper conveying motor error

The lock signal of the motor is detected
above 450 ms.

Remarks

Causes Check procedures/corrective measures

Poor contact in the
connector termi­nals.

Defective engine
PWB.

Defective paper
feeder.

Poor contact in the
connector termi­nals.

Defective drive
transmission sys­tem.

Defective PWB. Replace the PF main PWB or engine PWB

Defective paper PF
conveying motor.

Check the connection of connector YC27 on
the engine PWB and the connector on the
PF main PWB, and the continuity across the
connector terminals. Repair or replace if
necessary.

Replace the engine PWB and check for cor­rect operation.

Replace the paper feeder with another unit
and check the operation. If the operation is
normal, replace or repair optional paper
feeder.

Check the connection of connector on the
engine PWB and the connector on the PF
main PWB, and the continuity across the
connector terminals. Repair or replace if
necessary.

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

and check for correct operation.

Replace the PF paper conveying motor.

1-4-6

Service Manual Y112020-4

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 paper feeder
does not operate
when the main power
switch is turned on.

(2)
The PF drive motor
does not operate.

(3)
The PF paper feed
clutch 1/2 or PF
paper conveying
clutch does not oper­ate.

(4)
The PF lift motor 1/2
does not operate.

(5)
The size of paper on
the cassette 3 is not
displayed correctly.

(6)
The size of paper on
the cassette 4 is not
displayed correctly.

1. Poor contact in the con­nector terminals.

2. Defective left cover 4
switch.

1. Poor contact in the con­nector terminals.

2. Broken the gear. Check visually and replace the gear if necessary.

3. Defective PF drive motor. Run maintenance item U247 and check if the PF paper conveying

4. Defective PF main PWB. Run maintenance item U247 and check if YC4-3 on the PF main

1. Broken clutch coil. Check for continuity across the coil. If none, replace the clutch.

2. Poor contact in the con­nector terminals.

3. Defective PF main PWB. Run maintenance item U247 and check if following terminals on

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

2. Poor contact in the con­nector terminals.

1. Poor contact in the con­nector terminals.

2. Defective PF paper size
length switch 1.

3. Defective PF paper size
width switch 1.

1. Poor contact in the con­nector terminals.

2. Defective PF paper size
length switch 2.

3. Defective PF paper size
width switch 2.

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

Check for continuity across the contacts. If none, replace the left
cover 4 switch.

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

motor operates when YC4-3 on the PF main PWB goes low. If not,
replace the PF drive motor.

PWB goes low. If not, replace the PF main PWB.

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

the PF main PWB goes low. If not, replace the PF main PWB.
PF paper feed clutch 1: YC2-5
PF paper feed clutch 2: YC2-6
PF paper conveying clutch: YC2-4

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.

Check if YC8-3 on the PF main PWB goes low when the PF paper
size length switch 1 is turned on. If not, replace the PF paper size
length switch 1.

Check for continuity between YC3-1, YC3-2, and YC3-3 on the PF
main PWB. If the continuity is unaffected by movement of the
width guides in the cassette 3 (i.e. either remains present or
remains absent), then replace the PF paper size width switch 1.

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

Check if YC8-1 on the PF main PWB goes low when the PF paper
size length switch 2 is turned on. If not, replace the PF paper size
length switch 2.

Check for continuity between YC3-11, YC3-12, and YC3-13 on
the PF main PWB. If the continuity is unaffected by movement of
the width guides in the cassette 4 (i.e. either remains present or
remains absent), then replace the PF paper size width switch 2.

3LM

Y112020-4 Service Manual

1-4-7

3LM

Problem Causes Check procedures/corrective measures

(7)
The message
requesting covers to
be closed is dis­played when the left
cover 4 is closed.

(8)
Others.

1. Poor contact of the left
cover 4 switch connector
terminals.

2. Defective left cover 4
switch.

1. Wiring is broken, shorted
or makes poor contact.

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

Check for continuity across the contacts. If there is no continuity
when the left cover 4 switch is on, replace it.

Check for continuity. If none, repair.

1-4-8

Service Manual Y112020-4

1-4-4 Mechanical problems

Problem Causes/check procedures Corrective measures

(1)
No primary paper feed.

(2)
Skewed paper feed.

(3)
Multiple sheets of paper
are fed at one time.

(4)
Paper jams.

(5)
Abnormal noise is heard.

Check if the surfaces of the following rollers
and pulleys are dirty with paper powder:
forwarding pulley, paper feed pulley, separa­tion pulley, feed roller and feed pulley.

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

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

Electrical problem with the following electro­magnetic clutches: PF paper feed clutches 1/
2 and PF paper conveying clutch.

Paper width guide in the cassette installed
incorrectly.

Deformed paper width guide in the cassette. Check the paper width guide visually and

Check if the separation pulley is deformed. Replace the separation pulley if it is worn

Check if the paper is curled. Change the paper.

Check if the paper is excessively curled. Change the paper.

Deformed guides along the paper conveying
path.

Check if the pulleys, rollers and gears operate
smoothly.

Check if the PF paper feed clutches 1/2 and
the PF paper conveying clutch are installed
correctly.

3LM

Clean with isopropyl alcohol.

Replace (see page 1-5-2).

See page 1-4-7.

Check the paper width guide visually and
remedy or replace if necessary.

remedy or replace if it is deformed.

(see page 1-5-2).

Check visually and remedy or replace any
deformed guides.

Grease the bushings and gears.

Remedy.

Y112020-4 Service Manual

1-4-9

3LM

This page is intentionally left blank.

1-4-10

Service Manual Y112020-4

3LM

1-5 Assembly and Disassem bly

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 replacing battery on a PWB, dispose properly according to laws and regulations.
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.

Y112020-4 Service Manual

1-5-1

3LM

1-5-2 Paper feed section

(1) Detaching and refitting the forwarding, paper feed and separation pulleys

Replace the forwarding, paper feed and separation pulleys as follows.

Procedure

Removing the primary paper feed units

1. Remove cassette 3 and 4.

2. Remove the screw and then remove the
front upper cover.

Front upper cover

Screw

Screw

3. Remove each screw and then remove the
primary paper feed units.

Primary paper
feed unit

Screw

Screw

Figure 1-5-1

Primary paper
feed unit

Figure 1-5-2

1-5-2

Service Manual Y112020-4

Removing the forwarding pulley

r

r

4. Remove the stopper and spring from the pri­mary paper feed unit.

5. Raise the forwarding pulley retainer in the
direction the arrow, and remove from the pri­mary paper feed unit.

3LM

Forwarding
pulley retainer

Stoppe

Spring

Figure 1-5-3

6. Remove the stop ring from the forwarding
pulley retainer.
Pull the paper forwarding pulley shaft and
remove the forwarding pulley.

Removing the paper feed pulley

7. Remove two stop rings from the primary
paper feed unit.

8. Pull the paper feed pulley shaft in the direc­tion of the arrow and remove the paper feed
pulley.

Forwarding pulley retaine

Forwarding
pulley shaft

Stop ring

Forwarding pulley

Figure 1-5-4

Stop ring

Stop ring

Y112020-4 Service Manual

Paper feed
pulley shaft

Paper feed pulley

Figure 1-5-5

1-5-3

3LM

r

Removing the separation pulley

9. Remove the stop ring from the primary
paper feed unit.

10. Pull the separation pulley shaft in the direc­tion of the arrow and remove the separation
pulley.

11. Replace the forwarding, paper feed and
separation pulleys.

12. Refit all the removed parts.
When refitting the forwarding pulley, orient it
correctly as shown in Figure 1-5-7.

Separation pulley shaft

Stop ring

Separation pulley

Figure 1-5-6

Machine front Machine rea

Forwarding pulley

Figure 1-5-7

1-5-4

Service Manual Y112020-4

(2) Detaching and refitting PF paper size width switch 1, 2

Replace PF paper size width switch 1 and 2 as follows.

Caution:

After replacing paper feeder paper width switch, be sure to perform (4) Adjusting the position of the rack adjuster.

3LM

Procedure

1. Remove the cassette.

2. Remove two screws and 8-pin socket from
the rear of the cassette.

3. Detach the 8-pin connector of the PF paper
size width switch from the 8-pin socket.

4. Remove three screws holding the rack
adjuster.

5. While raising the cassette lift plate in the
direction of the arrow, remove the rack
adjuster.

Screw

Screw

Screw

Rack adjuster

Cassette lift plate

Screw

Cassette

8-pin socket

8-pin connector

Screw

Figure 1-5-8

Y112020-4 Service Manual

1-5-5

3LM

6. Remove two screws from the back of the
rack adjuster and then the PF paper size
width switch.

Screw

Screw

PF paper size
width switch

Rack adjuster

Figure 1-5-9

7. Apply the specified grease to the printed
surface of the new PF paper size width
switch (shaded area in the diagram) and fit
the switch to the rack adjuster.

8. Refit all removed parts.

Apply the specified grease.

PF paper size width switch

Figure 1-5-10

1-5-6

Service Manual Y112020-4

(3) Detaching and refitting the PF paper conveying clutch and PF paper feed clutch 1/2

Replace PF paper conveying clutch and PF paper feed clutch 1/2 as follows.

Procedure

Removing the PF paper conveying clutch

1. Remove the primary paper feed units (see
page1-5-2 ).

2. Remove three screws and then remove the
rear cover.

Screw

Screw

Screw

Rear cover

3LM

3. Release three wire saddles.

4. Remove the connector.

5. Remove the stop ring and then remove the
PF paper conveying clutch.

Figure 1-5-11

Wire saddles

PF Paper
conveying clutch

Stop ring

Connector

Y112020-4 Service Manual

Figure 1-5-12

1-5-7

3LM

A

Removing the PF paper feed clutch 1 and 2

6. Release the wire saddle.

7. Remove the connector A, B, C, D and E.

8. Remove four screws and then remove the
drive unit.

Wire saddle

Connector A

Connector C

Drive unit

Screw

Screw

Connector B

Connector D

9. Remove two screws and then remove the
PF drive motor from the drive unit.

Connector C

Connector D

Figure 1-5-13

Screw

Screw

Screw

Connector E

Connector

Connector B

Screw

Drive unit

1-5-8

PF drive motor

Figure 1-5-14

Service Manual Y112020-4

10. Remove each two shaft covers, stop rings

r

and bushes from drive unit.

11. Remove four screws and then remove the
drive plate and ground plate.

Drive unit

Ground plate

3LM

Screw

Bush

Stop ring

Shaft cove

Screws

12. Remove the PF paper feed clutch 1 and 2.

13. Replace the PF paper conveying clutch, PF
paper feed clutch 1 and 2.

14. Refit all removed parts.

Caution:

When fitting the clutches, be sure to refit the
whirl-stops.
After fitting the drive unit, fit the primary
paper feed unit.

Drive plate

Figure 1-5-15

Drive unit

Screw

Bush

Stop ring

Shaft cover

PF paper
feed clutch 1

Y112020-4 Service Manual

PF paper
feed clutch 2

Figure 1-5-16

1-5-9

3LM

(4) Adjusting the position of the rack adjuster

Perform the following adjustment if there is a regular error between the center lines of the copy image and the original on
the paper fed from the cassette.

Procedure

Start

Enter maintenance mode.

Enter 034 using cursor up/down keys

or numeric key and press the start key.

Select [LSUOUT LEFT] and then
select [LSUOUT LEFT (CAS3)].

Press the system menu key to
output the test pattern.

Is the image correct?

<Reference value>

Deviation to the left or right:

1.5 mm or less

Yes

Exit maintenance mode.

End

No

Correct image Output

example 1

Output

example 2

Figure 1-5-17

Retighten three screws securing the
rack adjuster.

Loosen three screws securing the rack adjuster
and change the position of the adjuster.
If the test pattern output example looks like 1,
turn the adjusting screw clockwise, move the
adjuster in the direction of the black arrow ( ).
If the test pattern output example looks like 2,
turn the adjusting screw counterclockwise,
move the adjuster in the direction of the white
arrow ( ).

1-5-10

Rack adjuster

Screw

Screw

Screw

Adjusting screw

Figure 1-5-18 Adjusting the position of the rack adjuster

Service Manual Y112020-4

3LM

2-1 Mechanical Construction

2-1-1 Mechanical construction

The paper feeder feeds paper from either of its two cassettes to the machine. When paper is fed from cassette 4 of the
paper feeder, the PF paper conveying clutch (PFCCL) is operated to rotate the feed roller and pulley to carry the paper into
the machine.

1238

6

10

14

4

7

9

123

12

6

5

15

(1) Forwarding pulley
(2) Paper feed pulley
(3) Separation pulley
(4) Feed roller
(5) Feed pulley
(6) Cassette operation plate
(7) Lift operation plate
(8) PF lift switch 1 (PFLSW1)
(9) PF lift switch 2 (PFLSW2)

11

7

Figure 2-1-1

(10) PF paper switch 1 (PFPSW1)
(11) PF paper switch 2 (PFPSW2)
(12) PF paper size width switch 1

(13) PF paper size width switch 2

(14) PF feed switch (PFFSW)
(15) Left cover 4 switch (LC4SW)

13

(PFPWSW1)

(PFPWSW2)

Y112020-4 Service Manual

2-1-1

3LM

FCL REM

UFCL REM

PFMPWB

YC2-4

YC2-5

PFCCL

PFFSW

PFPF

CL1

PFPF

CL2

PFLSW1

PFPSW1

PFLSW2

PFPSW2

PFDM

PFLM1

PFPWSW1

PFLM2

PFPWSW2

PFPLSW1

PFPLSW2

UCLLSW

UCPESW

ULM OUT

UP SIG1,2

UPCLE SW

UP DIG0,1,2

LCLLSW

LCPESW

LLM OUT

LO SIG1,2

LPCLE SW

LO DIG0,1,2

START/STOP

LFCL REM

LFEED SW

YC1-7

YC1-8

YC2-12,14

YC2-11,15

YC8-3

YC3-1,2,3

YC1-9

YC1-10

YC2-8,10

YC2-13,16

YC8-1

YC3-11,12,13

YC4-3

YC2-6

YC3-5

2-1-2

Figure 2-1-2

Service Manual Y112020-4

2-2 Electrical Parts Layout

2-2-1 Electrical parts layout

3

3LM

17

11

2

15

16

5

12 13

6

4

Machine front

14

9

10

1

7

8

18

Machine inside Machine rear

Figure 2-2-1 Layout of electrical parts

1. PF main PWB (PFMPWB) ........................... Controls electrical parts.

2. Left cover 4 switch (LC4SW) ....................... Breaks the safety circuit when left cover 4 is opened, and resets paper

jam detection.

3. PF lift switch 1 (PFLSW1) ............................ Detects the cassette operation plate of cassette 3 reaching the upper

limit.

4. PF lift switch 2 (PFLSW2) ............................ Detects the cassette operation plate of cassette 4 reaching the upper

limit.

5. PF paper switch 1 (PFPSW1) ...................... Detects the presence of paper in cassette 3.

6. PF paper switch 2 (PFPSW2) ...................... Detects the presence of paper in cassette 4.

7. PF paper size length switch 1

(PFPLSW1).................................................. Detects the length of paper in cassette 3.

8. PF paper size length switch 2

(PFPLSW2).................................................. Detects the length of paper in cassette 4.

9. PF paper size width switch 1

(PFPWSW1) ................................................ Detects the width of paper in cassette 3.

10. PF paper size width switch 2

(PFPWSW2) ................................................ Detects the width of paper in cassette 4.

11. PF feed switch (PFFSW) ............................. Controls paper feeder paper feed clutch 2.

12. PF drive motor (PFDM) ................................ Drives the paper feeder.

13. PF lift motor 1 (PFLM1)................................ Drives the cassette operation plate of cassette 3.

14. PF lift motor 2 (PFLM2)................................ Drives the cassette operation plate of cassette 4.

15. PF paper feed clutch 1 (PFPFCL1).............. Primary paper feed from cassette 3.

16. PF paper feed clutch 2 (PFPFCL2).............. Primary paper feed from cassette 4.

17. PF paper conveying clutch (PFCCL) ........... Conveys paper to the machine.

18. PF cassette heater* (PFCH) ........................ Dehumidifies paper.

*Option.

Y112020-4 Service Manual

2-2-1

3LM

This page is intentionally left blank.

2-2-2

Service Manual Y112020-4

2-3 Operation of the PWBs

2-3-1 PF main PWB

PFPWSW1

PFPWSW2

PFFSW

UP DIG0,1,2

LO DIG0,1,2

LFEED SW

PFMPWB

START/STOP,CLOCK,
GAIN,CW/CCW

LD

ULM OUT
UP SIG1,2

3LM

PFDM

PFLM1

PFPLSW1

PFPLSW2

PFPSW1

PFLSW1

PFPSW2

PFLSW2

UPCLE SW

LPCLE SW

UCPESW

UCLLSW

LCPESW

LCLLSW

CPU
(U1)

EEPROM

(U2)

Figure 2-3-1 PF main PWB block diagram

LLM OUT
LO SIG1,2

FCL REM

UFCL REM

LFCL REM

PUSH SW

24V

5V

Serial
communication data

PFLM2

PFCCL

PFPF

CL1

PFPF

CL2

LC4SW

Machine

Y112020-4 Service Manual

2-3-1

3LM

110

YC4

YC2

1

7

2

1

16

15

17

18

YC5

17

YC6

U3

U6

14

YC8

U7 U8

U1

YC1

U2

U5

YC7

5

1

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

1

YC3

2

2

1

14

13

2-3-2

Service Manual Y112020-4

Connector Pin No. Signal I/O Voltage Description

YC1 1 5V O 5 V DC 5 V DC supply to PFPSW1

Connected
to the PF
paper switch
1/2 and PF
lift switch 1/
2

YC2 1 24V O 24 V DC 24 V DC supply to PFCCL

Connected
to the PF
paper con­veying
clutch, PF
paper feed
clutch 1/2
and PF lift
motor 1/2

2 5V O 5 V DC 5 V DC supply to PFLSW1

3 5V O 5 V DC 5 V DC supply to PFPSW2

4 5V O 5 V DC 5 V DC supply to PFLSW2

5 NC - - Not used

6 NC - - Not used

7 UCLLSW I 5/0 V DC PFLSW1: On/Off

8 UCPESW I 0/5 V DC PFPSW1: On/Off

9 LCLLSW I 5/0 V DC PFLSW2: On/Off

10 LCPESW I 0/5 V DC PFPSW2: On/Off

11 NC - - Not used

12 NC - - Not used

13 GND - - Ground

14 GND - - Ground

15 NC - - Not used

16 NC - - Not used

17 GND - - Ground

18 GND - - Ground

2 24V O 24 V DC 24 V DC supply to PFPFCL1

3 24V O 24 V DC 24 V DC supply to PFPFCL2

4 FCL REM O 0/24 V DC PFCCL: On/Off

5 UFCL REM O 0/24 V DC PFPFCL1: On/Off

6 LFCL REM O 0/24 V DC PFPFCL2: On/Off

7 GND - - Ground

8 LLM OUT SOR O 0/24 V DC PFLM2: On/Off

9 GND - - Ground

10 LLM OUT SINK O 0/24 V DC PFLM2: On/Off

11 UP SIG1 I 0/5 V DC Lift motor 1 paper gauge signal (1)

12 ULM OUT SOR O 0/24 V DC PFLM1: On/Off

13 LO SIG1 I 0/5 V DC Lift motor 2 paper gauge signal (1)

14 ULM OUT SINK O 0/24 V DC PFLM1: On/Off

15 UP SIG2 I 0/5 V DC Lift motor 1 paper gauge signal (2)

16 LO SIG2 I 0/5 V DC Lift motor 2 paper gauge signal (2)

3LM

Y112020-4 Service Manual

2-3-3

3LM

Connector Pin No. Signal I/O Voltage Description

YC3 1 UP DIG0 I 0/5 V DC PFPWSW1: On/Off

Connected
to the PF
paper size
width switch
1/2, PF feed
switch and
left cover 4
switch

YC4 1 24V O 24 V DC 24 V DC supply to PFDM

Connected
to the PF
drive motor

YC5 1 GND - - Ground

Connected
to the
machine

YC8 1 LOCLE SW I 0/5 V DC PFPLSW2: On/Off

Connected
to the PF
paper size
length
switch 1/2

2 UP DIG1 I 0/5 V DC PFPWSW1: On/Off

3 UP DIG2 I 0/5 V DC PFPWSW1: On/Off

4 GND - - Ground

5 LFEED SW I 0/5 V DC PFFSW: On/Off

6 GND - - Ground

7 5V O 5 V DC 5 V DC supply to PFFSW

8 GND - - Ground

9 PUSH SW I 0/5 V DC LC4SW: On/Off

10 NC - - Not used

11 LO DIG0 I 0/5 V DC PFPWSW2: On/Off

12 LO DIG1 I 0/5 V DC PFPWSW2: On/Off

13 LO DIG2 I 0/5 V DC PFPWSW2: On/Off

14 GND - - Ground

2 GND - - Ground

3 START/STOP O 0/5 V DC PFDM start/stop signal

4 CLOCK O 0/5 V DC (pulse) PFDM clock signal

5 GAIN O 0/5 V DC PFDM gain signal

6 LD O 0/5 V DC PFDM lock signal

7 CW/CCW O 0/5 V DC PFDM rotation switch signal

2 5V I 5 V DC 5 V DC supply to paper feeder

3 UFEED SW I 0/5 V DC FSW3: On/Off

4 READY O 0/5 V DC Paper feeder ready signal

5 SDI I 0/5 V DC (pulse) Paper feeder serial communication data signal

6 SDO O 0/5 V DC (pulse) Paper feeder serial communication data signal

7 SCLK I 0/5 V DC (pulse) Paper feeder clock signal

8 SEL I 0/5 V DC Paper feeder select signal

9 24V I 24 V DC 24 V DC supply to paper feeder

10 GND - - Ground

2 GND - - Ground

3 UPCLE SW I 0/5 V DC PFPLSW1: On/Off

4 GND - - Ground

2-3-4

Service Manual Y112020-4

2-4 Appendixes

List of maintenance parts

3LM

Maintenance part name

Name used in service manual Name used in parts list

Part No.

Alternative

part No.

Fig.

No.

Feed roller PARTS ROLLER FEED AVGR12893G - 4 32

Feed pulley PULLEY FEED no code - 1 10

Paper feed pulley PULLEY,PAPER FEED 906081L - 4 1
Separation pulley PULLEY,SEPARATION 906082M

- 4 2

Forwarding pulley PULLEY FEED A AVGR00660V - 4 5

PF paper conveying clutch PARTS CLUTCH FEED 50 AVGR12894V - 4 40

PF paper feed clutch 1 PARTS CLUTCH FEED 50 AVGR12894V - 5 3
PF paper feed clutch 2 PARTS CLUTCH FEED 50 AVGR12894V - 5 3

Periodic maintenance procedures

Section

Paper feed
section

Maintenance

part/location

Feed roller

Method Maintenance cycle Points and cautions Page

Cleaning

Every time Clean with alcohol or a dry

cloth.

Feed pulley Cleaning Every time Clean with alcohol or a dry

cloth.

Paper feed pulley Check and

replace

Every time Clean with alcohol or a dry

cloth. Replace after feeding
150,000 sheets. Check and
cleaning when user call
occurs.

Separation pulley

Check and
replace

Every time Clean with alcohol or a dry

cloth. Replace after feeding
150,000 sheets. Check and
cleaning when user call
occurs.

Forwarding pulley Check and

replace

Every time Clean with alcohol or a dry

cloth. Replace after feeding
150,000 sheets. Check and
cleaning when user call
occurs.

PF paper conveying
clutch

Check

Every time Check state of paper feed.

Check and replace when user
call occurs.

PF paper feed clutch 1

Check

Every time Check state of paper feed.

Check and replace when user
call occurs.

PF paper feed clutch 2

Check

Every time Check state of paper feed.

Check and replace when user
call occurs.

P.1-5-2

P.1-5-2

P.1-5-2

Ref.

No.

Y112020-4 Service Manual

2-4-1

3LM

This page is intentionally left blank.

2-4-2

Service Manual Y112020-4

3LM

2-4-3

Wiring diagram

17

PFPWSW1

PFPWSW2

28

YC3 YC2

44

53

1 1 UP DIG0 FCL REM 4 4

11

12

PFCCL

PFLM1

PFLM2

LC4SW

EPWB

33

64

2 2 UP DIG1

22

71

3 3 UP DIG2

24V

21

12

PFPFCL1

21

12

PFPFCL2

21

11

8 2 4 4 GND

55

46
35

UP SIG2 15 15

55

GND 7 7

44

UP SIG1 11 11

33

ULM OUT SINK 14 14

22

ULM OUT SOR 12 12

11

11

775V

22

6 6 GND
5 5 LFEED SW

17

LO SIG2 16 16

55

28

GND 9 9 4 4

44

53

11 11 LO DIG0

LO SIG1 13 13 3 3

33

64

12 12 LO DIG1

LLM OUT SINK 10 10

22

22

71

13 13 LO DIG2

LLM OUT SOR 8 8

22

LFCL REM 6 6

11

11

82

14 14 GND

55

46

UFCL REM 5

24V

5

35

33
42
51

24
15

24V 3 3

PFFSW

33
22
11

8 8 GND
9 9 PUSH SW

10 10 NC

PFPLSW2

PFPLSW1

11

4 4 GND

22

3 3 UPCLE SW

11

2 2 GND

22

1 1 LPCLE SW

YC1

YC8

151115 NC

PFPSW1

PFLSW1

PFPSW2

PFLSW2

28

5

11 NC

11

17

1

5NC

22

46

8

15V

33

35

13

8 UCPESW

64

2

13 GND

11

53

7

25V

22

82

14

7 UCLLSW

33

71

25
16
61
52
43
34

1
3
4
6
8

10

PSPWB

7
5

1
2

3
1

14 GND
16
12

16 NC

6

12 NC

6NC

28

11

17

22

46

445V

33

35

10 10 LCPESW

64

17 17 GND

Machine

11

53

335V

YC5

22

82

9 9 LCLLSW

UFEED SW 3 3

11 11 UFEED SW

33

71

16
25
34
43
52
61

16
25
34
43
52
61

18 18 GND

READY 4 4

10 10 READY

SDI 5 5

9 9 SDO

YC4

SDO 6 6

8 8 SDI

11

1 1 24V

SCLK 7 7

7 7 SCLK

22

2 2 GND

SEL 8 8

5 5 SEL

PFDM

33

3 3 START/STOP

5V 2 2

445V

44

4 4 CLOCK

GND 1 1

3 3 GND

55

5 5 GAIN

66

66LD

77

7 7 CW/CCW

GND 10 10

2 2 GND

24V 9 9

1 1 24V

PFCH

PFMPWB

11

12 12 AC(L)

22

6 6 AC(N)

UPDATING STATUS

DATE UPDATED PAGES PAGES CODE

04/2010 1ST EDITION 61 Y112020-4