Kyocera Mita KM 1505 Diagram

KM-1505

SERVICE

MANUAL

Published in June.’01

2BT70760

CAUTION

DANGER OF EXPLOSION IF BATTERY IS INCORRECTLY REPLACED. REPLACE ONLY WITH
THE SAME OR EQUIVALENT TYPE RECOMMENDED BY THE MANUFACTURER. DISPOSE OF
USED BATTERIES ACCORDING TO THE MANUFACTURER’S INSTRUCTIONS.

ATTENTION

IL Y A DANGER D’EXPLOSION S’IL Y A REMPLACEMENT INCORRECT DE LA BATTERIE.
REMPLACER UNIQUEMENT AVEC UNE BATTERIE DU MÊME TYPE OU D’UN TYPE REC­OMMANDÉ PAR LE CONSTRUCTEUR. METTRE AU RÉBUT LES BATTERIES USAGÉES
CONFORMÉMENT AUX INSTRUCTIONS DU FABRICANT.

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 main

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

immediately. ......................................................................................................................................

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. ................................................................................

CONTENTS

1-1 Specifications

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

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

(1) Copier ............................................................................................................................................. 1-1-2

(2) Operation panel .............................................................................................................................. 1-1-3

1-1-3 Machine cross section .......................................................................................................................... 1-1-4

1-1-4 Drive system ........................................................................................................................................ 1-1-5

(1) Drive system 1 (drive motor drive train) .......................................................................................... 1-1-5

(2) Drive system 2 (scanner motor drive train) ..................................................................................... 1-1-6

1-2 Handling Precautions

1-2-1 Drum .................................................................................................................................................... 1-2-1

1-2-2 Developer and toner ............................................................................................................................. 1-2-1

1-2-3 Installation environment ....................................................................................................................... 1-2-2

1-3 Installation

1-3-1 Unpacking and installation ................................................................................................................... 1-3-1

(1) Installation procedure ..................................................................................................................... 1-3-1

1-3-2 Setting initial copy modes .................................................................................................................. 1-3-10

1-3-3 Copier management ........................................................................................................................... 1-3-11

(1) Executing a copier management item .......................................................................................... 1-3-11

(2) Default settings ............................................................................................................................. 1-3-12

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1-4 Maintenance Mode

1-4-1 Maintenance mode ............................................................................................................................... 1-4-1

(1) Executing a maintenance item ....................................................................................................... 1-4-1

(2) Maintenance mode item list ............................................................................................................ 1-4-2

(3) Contents of maintenance mode items ............................................................................................ 1-4-4

1-5 Troubleshooting

1-5-1 Paper misfeed detection ...................................................................................................................... 1-5-1

(1) Paper misfeed indication ................................................................................................................ 1-5-1

(2) Paper misfeed detection conditions ................................................................................................ 1-5-2

(3) Paper misfeeds ............................................................................................................................... 1-5-5

1-5-2 Self-diagnosis ....................................................................................................................................... 1-5-7

(1) Self-diagnostic function .................................................................................................................. 1-5-7

(2) Self-diagnostic codes ..................................................................................................................... 1-5-7

1-5-3 Image formation problems ................................................................................................................. 1-5-11

(1) No image appears (entirely white). ............................................................................................... 1-5-12

(2) No image appears (entirely black). ............................................................................................... 1-5-12

(3) Image is too light. ......................................................................................................................... 1-5-13

(4) Background is visible. ................................................................................................................... 1-5-13

(5) A white line appears longitudinally. .............................................................................................. 1-5-13

(6) A black line appears longitudinally. .............................................................................................. 1-5-14

(7) A black line appears laterally. ....................................................................................................... 1-5-14

(8) One side of the copy image is darker than the other. ................................................................... 1-5-14

(9) Black dots appear on the image. .................................................................................................. 1-5-15

(10) Image is blurred. ........................................................................................................................... 1-5-15

(11) The leading edge of the image is consistently misaligned with the original. ................................ 1-5-15

(12) The leading edge of the image is sporadically misaligned with the original. ................................ 1-5-16

(13) Paper creases. ............................................................................................................................. 1-5-16

(14) Offset occurs. ............................................................................................................................... 1-5-16

(15) Image is partly missing. ................................................................................................................ 1-5-17

(16) Fixing is poor. ............................................................................................................................... 1-5-17

(17) Image is out of focus. ................................................................................................................... 1-5-17

1-1-1

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(18) Image center does not align with the original center. ................................................................... 1-5-18

(19) Image contrast is low (carrier scattering). ..................................................................................... 1-5-18

1-5-4 Electrical problems ............................................................................................................................. 1-5-19

(1) The machine does not operate when the main switch is turned on. ............................................. 1-5-19

(2) The drive motor does not operate. ............................................................................................... 1-5-19

(3) The scanner motor does not operate. .......................................................................................... 1-5-19

(4) The toner feed motor does not operate. ....................................................................................... 1-5-19

(5) Cooling fan motor does not operate. ............................................................................................ 1-5-19

(6) The registration clutch does not operate. ..................................................................................... 1-5-19

(7) The paper feed clutch does not operate. ...................................................................................... 1-5-20

(8) The bypass paper feed clutch does not operate. ......................................................................... 1-5-20

(9) The cleaning lamp does not turn on. ............................................................................................ 1-5-20

(10) The exposure lamp does not turn on. ........................................................................................... 1-5-20

(11) The exposure lamp does not turn off. ........................................................................................... 1-5-20

(12) The fixing heater does not turn on (C610). ................................................................................... 1-5-20

(13) The fixing heater does not turn off. ............................................................................................... 1-5-20

(14) Main charging is not performed (C510). ....................................................................................... 1-5-20

(15) Transfer charging is not performed. ............................................................................................. 1-5-21

(16) No developing bias is output. ....................................................................................................... 1-5-21

(17) A paper jam in the paper feed, paper conveying or fixing section is indicated

when the main switch is turned on. .............................................................................................. 1-5-21

(18) The message requesting covers to be closed is displayed when the front cover and

paper conveying cover are closed. ............................................................................................... 1-5-21

(19) Others. .......................................................................................................................................... 1-5-21

1-5-5 Mechanical problems ......................................................................................................................... 1-5-22

(1) No primary paper feed. ................................................................................................................. 1-5-22

(2) No secondary paper feed. ............................................................................................................ 1-5-22

(3) Skewed paper feed. ...................................................................................................................... 1-5-22

(4) The scanner does not travel. ........................................................................................................ 1-5-22

(5) Multiple sheets of paper are fed at one time.................................................................................. 1-5-22

(6) Paper jams. .................................................................................................................................. 1-5-22

(7) Toner drops on the paper conveying path. ................................................................................... 1-5-22

(8) Abnormal noise is heard. .............................................................................................................. 1-5-22

1-6 Assembly and Disassembly

1-6-1 Precautions for assembly and disassembly ......................................................................................... 1-6-1

(1) Precautions ..................................................................................................................................... 1-6-1

(2) Running a maintenance item .......................................................................................................... 1-6-2

1-6-2 Paper feed section ............................................................................................................................... 1-6-3

(1) Detaching and refitting the paper feed pulleys ............................................................................... 1-6-3

(2) Detaching and refitting the bypass paper feed pulley ..................................................................... 1-6-5

(3) Adjustment after roller and clutch replacement .............................................................................. 1-6-8

(3-1) Adjusting the leading edge registration of image printing ...................................................... 1-6-8

(3-2) Adjusting the center line of image printing ............................................................................. 1-6-9

(3-3) Adjusting the margins for printing ........................................................................................ 1-6-10

(3-4) Adjusting the amount of slack in the paper .......................................................................... 1-6-11

1-6-3 Optical section .................................................................................................................................... 1-6-12

(1) Detaching and refitting the exposure lamp ................................................................................... 1-6-12

(2) Detaching and refitting the scanner wires .................................................................................... 1-6-14

(2-1) Detaching the scanner wires ............................................................................................... 1-6-14

(2-2) Fitting the scanner wires ...................................................................................................... 1-6-15

(3) Detaching and refitting the laser scanner unit .............................................................................. 1-6-18

(4) Detaching and refitting the ISU (reference) .................................................................................. 1-6-20

(5) Adjusting the longitudinal squareness (reference) ....................................................................... 1-6-21

(6) Adjusting magnification of the scanner in the main scanning direction ........................................ 1-6-22

(7) Adjusting magnification of the scanner in the auxiliary scanning direction ................................... 1-6-23

(8) Adjusting the scanner leading edge registration ........................................................................... 1-6-24

(9) Adjusting the scanner center line ................................................................................................. 1-6-25

(10) Adjusting the margins for scanning an original on the contact glass ............................................ 1-6-26

1-1-2

1-6-4 Image formation section ..................................................................................................................... 1-6-27

(1) Detaching and refitting the image formation unit .......................................................................... 1-6-27

(2) Detaching and refitting the main charger unit ............................................................................... 1-6-28

(3) Detaching and refitting the drum .................................................................................................. 1-6-29

(4) Detaching and refitting the cleaning blade ................................................................................... 1-6-31

(5) Replace the developer .................................................................................................................. 1-6-32

1-6-5 Transfer section ................................................................................................................................. 1-6-33

(1) Detaching and refitting the transfer roller assembly ..................................................................... 1-6-33

1-6-6 Fixing section ..................................................................................................................................... 1-6-34

(1) Detaching and refitting the fixing unit ........................................................................................... 1-6-34

(2) Detaching and refitting the fixing unit thermistor .......................................................................... 1-6-34

(3) Detaching and refitting the fixing heater ....................................................................................... 1-6-35

(4) Detaching and refitting the heat roller separation claws ............................................................... 1-6-37

(5) Detaching and refitting the heat roller ........................................................................................... 1-6-38

(6) Detaching and refitting the press roller ......................................................................................... 1-6-38

1-7 Requirements on PCB Replacement

1-7-1 Replacing the main PCB ...................................................................................................................... 1-7-1

1-7-2 Upgrading the firmware on the main PCB ............................................................................................ 1-7-3

1-7-3 Adjustment-free variable resistors (VR) ............................................................................................... 1-7-4

2-1 Mechanical construction

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

2-1-2 Main charging section .......................................................................................................................... 2-1-3

2-1-3 Optical section ...................................................................................................................................... 2-1-5

(1) Original scanning ............................................................................................................................ 2-1-6

(2) Image printing ................................................................................................................................. 2-1-8

2-1-4 Developing section ............................................................................................................................. 2-1-10

(1) Formation of magnetic brush ........................................................................................................ 2-1-11

(2) Toner density detection by the toner sensor ................................................................................ 2-1-12

(3) Toner density control .................................................................................................................... 2-1-12

(4) Correcting the toner sensor control voltage .................................................................................. 2-1-13

(5) Correcting toner output voltage .................................................................................................... 2-1-14

2-1-5 Transfer and separation section ......................................................................................................... 2-1-15

2-1-6 Cleaning section ................................................................................................................................. 2-1-17

2-1-7 Charge erasing section ...................................................................................................................... 2-1-18

2-1-8 Fixing section ..................................................................................................................................... 2-1-19

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2-2 Electrical Parts Layout

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

(1) PCBs .............................................................................................................................................. 2-2-1

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

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

(4) Other electrical components ........................................................................................................... 2-2-4

2-3 Operation of the PCBs

2-3-1 Power source PCB ............................................................................................................................... 2-3-1

2-3-2 Main PCB ............................................................................................................................................. 2-3-4

2-3-3 Operation PCB ..................................................................................................................................... 2-3-8

2-3-4 CCD PCB ........................................................................................................................................... 2-3-10

2-3-5 Laser diode PCB ................................................................................................................................ 2-3-11

1-1-3

2-4 Appendixes

Timing chart No. 1 .......................................................................................................................................... 2-4-1

Timing chart No. 2 .......................................................................................................................................... 2-4-2

Timing chart No. 3 .......................................................................................................................................... 2-4-3

Chart of image adjustment procedures .......................................................................................................... 2-4-4

Wiring diagram ............................................................................................................................................... 2-4-7

1-1-1 Specifications

Type ............................................... Desktop

Copying system.............................. Indirect electrostatic system

Originals .........................................Sheets of paper, books, 3-dimensional objects (Maximum original size: folio/81/2" ×

14")

Original feed system ...................... Contact glass: fixed

Copy paper .................................... Drawer: Plain paper (64 - 80 g/m

Bypass table: Plain paper (60 - 160 g/m

Special paper: Transparencies, letterhead and colored paper

Note: Use the bypass table for special paper.

1

Copying sizes ................................. Maximum: folio/8

Minimum: A6R /5

/2" × 14"

1

/2" × 81/2"R (When the bypass table is used)

Magnification ratios ........................ Manual mode: 50 - 200%, 1% increments

Copy speed ....................................At 100% magnification in copy mode:

1

/2" × 11"R: 15 copies/min.

A4R/8

First copy time ................................ Within 6.3 s (A4R/8

1

/2" × 11"R, original placed on the platen)

Warm-up time................................. Within 30 s (room temperature 20°C/68°F, humidity 65% RH)

In preheat/energy saver mode: Within 30 s (room temperature 20°C/68°F,

In preheat/energy saver mode: Within 10 s (room temperature 20°C/68°F,

Paper feed system ......................... Automatic feed

Capacity:
Drawer: 250 sheets
Manual feed
Capacity:

Bypass: 50 sheets

Continuous copying ....................... 1 - 99 sheets

Photoconductor ..............................OPC (drum diameter 30 mm)

Charging system ............................ Single positive corona charging

Exposure light source .................... Semiconductor laser

Developing system ......................... Dry, reverse developing (magnetic brush)

Developer: 2-component, ferrite carrier and N29T black toner

Toner density control: toner sensor

Toner replenishing: automatic from a toner container

Transfer system ............................. Transfer roller

Fixing system ................................. Heat roller

Heat source: halogen heaters (900 W for 120 V specifications/1030 W for

220 - 240 V specifications)

Control temperature: 180°C/356°F (at normal ambient temperature)

Abnormally high temperature protection device: 150°C/302°F thermostat

Fixing pressure: 36.28 N

Charge erasing system .................. Exposure by cleaning lamp

Cleaning system ............................ Cleaning blade

Scanning system ............................ Flat bed scanning by CCD image sensor

Resolution ...................................... 600 × 600 dpi

Light source ................................... Inert gas lamp

Dimensions .................................... 497 (W) × 497 (D) × 376 (H) mm

9

/16" (W) × 199/16" (D) × 1413/16" (H)

19

Weight ............................................Approx. 21 kg/46.2 lbs

Floor requirements .........................691 (W) × 497 (D) mm

3

/16" (W) × 199/16" (D)

27

Functions........................................ Self-diagnostics, preheat, automatic copy density control, enlargement/reduction

copy and photo mode

Power source ................................. 120 V AC, 60 Hz, 9 A

220 - 240 V AC, 50/60 Hz, 4.8 A (average 2.5 A)

Power consumption ....................... 1080 W (120V)

1152 W (220 - 240V)

(Measured value: 982 W (120V)/1131 W (220 - 240V)

2

)

2

)

humidity 65% RH) [priorty to power save]

humidity 65% RH) [priorty to recovery]

2BT

1-1-1

2BT

75

$

⁄ (*

1-1-2 Parts names

(1) Copier

1

4
3

6

2
&

)

^

%

#

1-1-2

0

1 Original cover
2 Operation panel
3 Paper conveying cover handle
4 Paper conveying cover
5 Multi-Bypass
6 Insert guides
7 Support guide
8 Toner container
9 Waste toner tank
0 Cleaning shaft
! Front cover

9 8 ¤

@

!

Figure 1-1-1

@ Main switch
# Copy storage section
$ Drawer
% Platen
^ Original size scales
& Length guide
* Width guide
( Width adjustment lever
) Length guide storage section
⁄ Drawer bottom plate
¤ Hnadles for transport

(2) Operation panel

1234659! @ 0$

Inch

Metric

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7# 8

7# 8

1 Start key (Indicator)
2 Stop/Reset key
3 Size Select key
4 Number of Copies/Zoom (+) key
5 Number of Copies/Zoom (–) key
6 Zoom Input/Enter key
7 Copy quantity/magnification display

1234659! @ 0$

Figure 1-1-2

8 Add Toner indicator
9 Paper Select key
0 Drawer indicator
! Multi-bypass indicator
@ Misfeed indicator
# Image mode selection key
$ Copy exposure adjustment keys

1-1-3

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1-1-3 Machine cross section

8

1

5

67

2

4

Figure 1-1-3 Machine cross section

1 Paper feed section
2 Main charging section
3 Optical section
4 Developing section
5 Transfer and sparation section
6 Cleaning section
7 Charge erasing section
8 Fixing section

3

Light path

Paper path

1-1-4

1-1-4 Drive system

(1) Drive system 1 (drive motor drive train)

8

2BT

^

&

*

$

@

%

#

!

0

2

1

7

9

1 Drive motor gear
2 Gear 67/30
3 Gear 23/16
4 Gear 37/21
5 Gear 23
6 Bypass paper feed clutch gear
7 Registration clutch gear
8 Gear 32/18
9 Paper feed clutch gear

3

4

5

6

As viewed from machine rear

Figure 1-1-4

0 Gear 97/25
! Drum drive gear 53
@ Gear 40/45
# Gear 41
$ Gear 28/20
% Gear 26/20
^ Fixing idle gear 44
& Gear 25
* Heat roller gear

1-1-5

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(2) Drive system 2 (scanner motor drive train)

1

3

Figure 1-1-5

1 Scanner motor gear
2 Scanner drive gear 27/13
3 Scanner belt
4 Gear Z23
5 Idle gear 21
6 Gear Z30

4

5

2

As viewed from machine rear

6

1-1-6

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1-2-1 Drum

Note the following when handling or storing the drum.

• When removing the image formation unit, never expose the drum surface to strong direct light.

• Keep the drum at an ambient temperature between 10°C/50°F and 32.5°C/90.5°F and at a relative humidity not higher

than 85% RH. Avoid abrupt changes in temperature and humidity.

• Avoid exposure to any substance which is harmful to or may affect the quality of the drum.

• Do not touch the drum surface with any object. Should it be touched by hands or stained with oil, clean it.

1-2-2 Developer and toner

Store the developer and toner in a cool, dark place. Avoid direct light and high humidity.

1-2-1

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1-2-3 Installation environment

1. Temperature: 10 - 32.5°C/50 - 90.5°F

2. Humidity: 20 - 85%RH

3. Power supply: 120 V AC, 9 A

4. Power source frequency: 50 Hz ±0.3%/60 Hz ±0.3%

5. Installation location

• 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 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 photoconductor, such as
mercury, acidic of alkaline vapors, inorganic gasses, NOx, SOx gases and chlorine-based organic solvents.

• Select a room with good ventilation.

6. Allow sufficient access for proper operation and maintenance of the machine.
Machine front: 1000 mm/39
Machine right: 300 mm/11

220 - 240 V AC, 4.8 A (average 2.5 A)

3

/8" Machine rear: 300 mm/1113/16"

13

/16" Machine left: 500 mm/1911/16"

c

b

f

a

Figure 1-2-1 Installation dimensions

a: 376 mm/14
b: 497 mm/19
c: 691 mm/273/16"
d: 497 mm/19
e: 847 mm/33

13
9

9
5

/16"

/16"

/16"
/16"

f: 845 mm/331/4"

d

e

1-2-2

1-3-1 Unpacking and installation

(1) Installation procedure

Remove the tapes, pads and sheet inside the drawer.

Remove the pins holding light source units 1 and 2.

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Start

Unpack.

Remove the tapes.

Adjust the fixing pressure.

Remove the pad inside the machine.

Install a toner container.

Install a waste toner tank.

Connect the power cord.

Load paper.

Make test copies.

Completion of the machine installation.

Caution:

Be sure to install a waste toner tank when setting the machine.

1-3-1

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Unpack.

^&*

(

6

8

4

@

!

0

0

2

)

7

3

1

%

9

1-3-2

5

1 Copier
2 Power cord
3 Upper pads
4 Stay
5 Outer case
6 Bottom pads
7 Tray spacer
8 Machine cover
9 Scanner pin tag
0 Fixing lever tags

#

$

Figure 1-3-1 Unpacking

! Waste toner tank spacer
@ Bar code labels
# Drawer spacer
$ Front drawer spacer
% Sheet
^ Instruction handbook
& Installation manual
* Business reply mail (120 V specs only)
( Plastic bag
) Paper storage bag

Remove the tapes.

1. Remove the 11 tapes.

2BT

Figure 1-3-2

2. Open the bypass tray and paper conveying cover
and then remove the two tapes.

Tapes

Figure 1-3-3

1-3-3

2BT

Adjust the fixing pressure.

3. Lift the fixing section release levers and close the
paper conveying cover.

Remove the tapes, pads and sheet inside
the drawer.

4. Pull the drawer out and remove the tapes and
two pads.

Caution: Be sure to load paper after the main

switch is turned on and copying is
enabled. Loading paper before turning
the main switch on may cause paper
jams.

Fixing section
release levers

Figure 1-3-4

Tapes

5. Open the original cover and remove the sheet on
the contact glass.

Pads

Figure 1-3-5

Sheet

Figure 1-3-6

1-3-4

Remove the pins holding light source units 1 and 2.

6. Remove the tapes and two pins for light source
unit 1 and 2.

2BT

7. Open the front cover and store the removed pins
by securing them on the inside of the cover. The
storing locations of the pins are marked inside the
front cover.

Caution: Be sure to refit the pins whenever the

copier is moved.

Remove the pad inside the machine.

Pins

Pins

Tapes

Figure 1-3-7

Figure 1-3-8

8. Remove the pad. (This step is not necessary for
metric specification copiers.)

Pad

Figure 1-3-9

1-3-5

2BT

Install a toner container.

9. Hold the toner container vertically and tap the top
15 times. Turn the container upside-down and tap
the top 15 times. Then, hold the container
horizontally and shake it from side to side 10
times.

Figure 1-3-10

10. Insert the toner container into the copier as far as
it will go and then slide it to the right as indicated
by the marked arrows.

Toner container

Figure 1-3-11

1-3-6

Install a waste toner tank.

11. Install the waste toner tank and close all the
covers and drawers.

2BT

Waste toner tank

Figure 1-3-12

Connect the power cord.

12. Connect the power cord and turn the main switch
on.

Caution: Never turn the power off or open covers

while the copier is driving. Doing so may
cause printing problems or contaminate
the copier internally.

Power cord

Figure 1-3-13

1-3-7

2BT

Length guide

Load paper.

13. Pull the drawer out as far as it will go.

14. Press the drawer bottom plate down and lock it
there.

15. Holding the width adjustment lever, move it to
align the width guide with the required paper
width.

Drawer bottom plate

Figure 1-3-14

16. While squeezing the presses on the sides,
remove the length guide and then insert it into the
holes of the required paper length.
Store the length guide in the space shown in the
diagram when the paper touches the right-hand
wall of the drawer.

Width adjustment

lever

Width guide

Figure 1-3-15

1-3-8

Figure 1-3-16

17. Set the paper flush against the left-hand wall of
the drawer.
* Load paper so that it is kept under the claw of

the drawer.

* When loading paper into the drawer, make sure

that the copy side is facing upward (the copy
side is the side facing upward when the
package is opened.)

* Check that the length and width guides securely

contact the paper. If there is a gap, adjust the
position of the length or width guide to close it.

* Load paper all at once and do not add paper

until all sheets are used up. Adding paper to a
drawer that still contains paper may cause
paper jams.

18. Push the drawer back in gently.
* Check that the paper is kept under the claw of

the drawer. If not, reload the paper.

Make test copies.

19. Set the original and make test copies.

2BT

Claw

Figure 1-3-17

Completion of machine installation.

1-3-9

2BT

1-3-2 Setting initial copy modes

Factory settings are as follows:

Maintenance

item No.

U254
U255
U256

U258

U260
U348

Contents

Turning auto start function on/off
Setting auto clear time
Turning auto preheat/energy saver
function on/off
Switching copy operation at toner
empty detectionempty detection
Changing the copy count timing
Setting the copy density adjustment range

Factory setting

On
90 s
On

Single mode, 70

After ejection
Normal

1-3-10

1-3-3 Copier management

In addition to a maintenance function for service, the copier is equipped with a management function which can be
operated by users (mainly by the copier administrator). In this copier management mode, default settings can be
changed.

(1) Executing a copier management item

• Executing a default setting item

Start

Press both of the copy exposure

adjustment keys for 3 s.

Select an setting item

using the zoom +/- keys.

Press the enter key.

2BT

Execute the default setting item

(see page 1-3-13)

Stop/reset key: on

or select "F00" and enter key: on

End

1-3-11

2BT

(2) Default settings

User status report

Outputs the details of the default settings.

1. Select “F01” and press the enter key.
User status report is printed out.

Exposure mode

Selects the image mode at power-on.

1. Select “F02” and press the enter key.

2. Select the exposure mode and press the enter
key.
Exposure mode: 1 (auto exposure)/
2 (text and photo)/3 (photo)/4 (text)

Exposure steps

Sets the number of exposure steps for the manual
exposure mode.

1. Select “F03” and press the enter key.

2. Select “3 steps” or “5 steps” and press the enter
key.
Setting range: 1 (3 steps)/2 (5 steps)

Auto exposure adjustment

Drawer paper size

Sets the size of paper loaded in the drawer.

1. Select “F08” and press the enter key.

2. Select the size of paper and press the enter key.
Paper size: 1 (A4R/8
11"R)/3 (Folio/5

1

/2" × 14")/2 (A5R/81/2" ×

1

/2" × 81/2"R)

Non-standard size paper for the bypass tray

Sets if non-standard size paper is available when the
paper is fed from the bypass tray.

1. Select “F09” and press the enter key.

2. Select “on” or “off” and press the enter key.
Setting range: 1 (on)/2 (off)

Non-standard size paper width setting for bypass tray

Sets the paper width when non-standard size is fed
from the bypass tray.

1. Select “F10” and press the enter key.

2. Enter the setting and press the enter key.
Setting range is 4.13" to 8.50" (105 to 216 mm).
Note: This setting item will not be displayed if “off”
is selected in “Non-standard size paper for the
bypass tray”.

Adjusts the exposure for the auto exposure mode.

1. Select “F04” and press the enter key.

2. Select the setting and press the enter key.
Setting range: 1 to 5

Text and photo original exposure adjustment

Adjusts the exposure to be used when text and photo
original is selected for the image mode.

1. Select “F05” and press the enter key.

2. Select the setting and press the enter key.
Setting range: 1 to 5

Photo original exposure adjustment

Adjusts the exposure to be used when photo original
is selected for the image mode.

1. Select “F06” and press the enter key.

2. Select the setting and press the enter key.
Setting range: 1 to 5

Text original exposure adjustment

Copy limit

Sets the limit of the number of copies that can be
made at a time.

1. Select “F11” and press the enter key.

2. Enter the setting and press the enter key.
Setting range is 1 to 99 copies.

Silent mode

Sets the length of time from when copying ends to
when entering the silent mode.

1. Select “F12” and press the enter key.

2. Select the setting and press the enter key.
Setting range: 1 (0 s)/2 (5 s)/3 (10 s)/4 (15 s)/
5 (30 s)

Auto shut-off

Sets if the auto shut-off function is available.

1. Select “F13” and press the enter key.

2. Select “on” or “off” and press the enter key.
Setting range: 1 (on)/2 (off)

Adjusts the exposure to be used when text original is
selected for the image mode.

1. Select “F07” and press the enter key.

2. Select the setting and press the enter key.
Setting range: 1 to 5

1-3-12

2BT

Auto preheat time

Sets the auto preheat time.

1. Select “F14” and press the enter key.

2. Select the setting and press the enter key.
Setting is available between 5 and 45 min. in 5
min. steps.
Setting range: 1 (5 min.)/2 (10 min.)/3 (15 min.)/
4 (20 min.)/5 (25 min.)/6 (30 min.)/7 (35 min.)/
8 (40 min.)/9 (45 min.)
Sets the auto preheat time to be shorter than the
auto shutoff time.

Auto shutoff time

Sets the auto shut-off time.

1. Select “F15” and press the enter key.

2. Select the setting and press the enter key.
Setting is available between 15 and 120 min. in 15
min. steps.
Setting range: 1 (15 min.)/2 (30 min.)/3 (45 min.)/
4 (60 min.)/5 (75 min.)/6 (90 min.)/7 (105 min.)/
8 (120 min.)

Preheat recovery time

Paper feed shifting adjustment (drawer)

Adjusts displacement of the copy image.

1. Select “F20” and press the enter key.

2. Select the setting and press the enter key.
Setting range: -3.0 to +3.0 (1 steps moves 0.1)

Paper feed shifting adjustment (bypass tray)

Adjusts displacement of the copy image.

1. Select “F21” and press the enter key.

2. Select the setting and press the enter key.
Setting range: -3.0 to +3.0 (1 steps moves 0.1)
Use A4R/81/2" × 11"R size paper.

Inch/metric specifications setting

Switches the copier specifications setting between
inch and metric.

1. Select “F22” and press the enter key.

2. Select the specifications setting and press the
enter key.
Specifications setting: 1 (inch)/2 (metric)/
3 (metric for Japan)

Selects the mode of the auto preheat function from
recovery priority mode and power save priority mode.

1. Select “F16” and press the enter key.

2. Select the priority mode and enter key: on
Priority mode: 1 (recovery priority mode)/
2 (power save priority mode)

Viewing total counter value

Displays the total number of copies.

1. Select “F17” and press the enter key.
The total number of copies are displayed on the
copy quantity/magnification display.

Toner counter report

Outputs the report on the toner consumption ratio.

1. Select “F18” and press the enter key.
The list is printed out.

Toner replacement message output setting

Sets if a message requesting the user to replace the
toner container is printed when the toner is used up.

1. Select “F19” and press the enter key.

2. Select “on” or “off” and press the enter key.
Setting range: 1 (on)/2 (off)

Folio length setting (drawer)

Sets the length when folio is selected as the paper
size.

1. Select “F23” and press the enter key.

2. Select the length and press the enter key.
Length: 1 (210 mm)/2 (216 mm)
This setting item is available only when metric is
selected for the copier specifications.

Folio length setting (bypass tray)

Sets the length when folio is selected as the paper
size.

1. Select “F24” and press the enter key.

2. Enter the setting and press the enter key.
Setting is available between 200 and 216 mm.
This setting item is available only when metric is
selected for the copier specifications.

1-3-13

1-4-1 Maintenance mode

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

(1) Executing a maintenance item

Start

Press the stop/reset key, start key
and the left copy exposure adjustment
key in the order presented and hold
them down.

2BT

Press the stop/reset key.

Enter the number of the maintenance
item to be executed using the copy
exposure adjustment keys or the zoom
+/- keys.

Press the start key.

The maintenance item is run.

Press the stop/reset key.

Yes

Run the item again?

No

· · · · · · · Entering the maintenance mode

· · · · · · · Selecting a maintenance item

Yes

Caution:

Do not perform aging without the waste toner tank installed during maintenance service.

Run another maintenance

mode?

No

Enter 001 using the copy exposure
adjustment keys or the zoom
+/- keys, and press the start key.

End

· · · · · · · Exiting the maintenance mode

1-4-1

2BT

(2) Maintenance mode item list

Section

General

Initialization

Drive, paper
feed, paper
conveying and
cooling system

Optical

High voltage

Developing

Item

No. setting*

U000 Outputting an own-status report —
U001 Exiting the maintenance mode —
U004 Setting the machine number —
U005 Copying without paper —
U020 Initializing all data —
U021 Initializing memories —
U022 Initializing backup data —
U030 Checking motor operation —
U031 Checking switches for paper conveying —
U032 Checking clutch operation —
U033 Checking solenoid operation —
U034 Adjusting the print start timing

• Adjusting the leading edge registration 0

• Adjusting the center line 0
U042 Setting the LSU type b
U051 Adjusting the amount of slack in the paper

• Drawer 0

• Bypass tray 0
U053 Performing fine adjustment of the motor speed

• Drive motor 0

• Polygon motor 0
U060 Adjusting the scanner input properties 12
U061 Turning the exposure lamp on —
U063 Adjusting the shading position 0
U065 Adjusting the scanner magnification

• Main scanning direction/auxiliary scanning direction 0
U066 Adjusting the leading edge registration for scanning an original on the 0

contact glass
U067 Adjusting the center line for scanning an original on the contact glass 0
U073 Checking scanner operation —
U088 Setting the input filter (moiré reduction mode) Off
U089 Outputting a MIP-PG pattern —
U091 Checking shading —
U092 Adjusting the scanner automatically —
U093 Setting the exposure density gradient

• Text/text and photo/photo mode 0
U100 Setting the surface potential 197
U101 Setting high voltages

• Developing bias 200/34

• Transfer voltage 94

• Transfer voltage output timing 256/544
U109 Setting the drum type b
U110 Checking/clearing the drum count —
U111 Checking/clearing the drum drive time —
U130 Initial setting for the developer —
U131 Setting the toner sensor control voltage 157
U132 Replenishing toner forcibly —
U135 Checking toner feed motor operation —
U155 Displaying the toner sensor output —

Maintenance item contents

Initial

* Initial setting for executing maintenance item U020

1-4-2

2BT

Section

Developing

Fixing and
cleaning

Operation
panel and
support
equipment

Mode setting

Image
processing

Others

Item

No. setting*

U156 Changing the toner control level

• Toner feed start level 113

• Toner empty level 44
U157 Checking/clearing the developing drive time —
U158 Checking/clearing the developing count —
U161 Setting the fixing control temperature

• Primary stabilization fixing temperature 125

• Secondary stabilization fixing temperature 180
U162 Stabilizing fixing forcibly —
U163 Resetting the fixing problem data —
U170 Setting the drum cleaning mode Off
U196 Turning the fixing heater on —
U199 Checking the fixing temperature —
U200 Turning all LEDs on —
U207 Checking the operation panel keys —
U208 Setting the paper size 81/2" × 11"
U252 Setting the destination Inch
U254 Turning auto start function on/off On
U255 Setting auto clear time 90
U256 Turning auto preheat/energy saver function on/off On
U258 Switching copy operation at toner empty detection Single mode,

U260 Changing the copy count timing After ejection
U332 Setting the size conversion factor —
U348 Setting the copy density adjustment range Normal
U402 Adjusting margins for printing —
U403 Adjusting margins for scanning an original on the contact glass —
U901 Checking/clearing copy counts by paper feed locations —
U903 Checking/clearing the paper jam counts —
U904 Checking/clearing the service call counts —
U910 Clearing the black ratio data —
U917 Setting the reading/writing of backup data Read
U990 Checking/clearing the time for the exposure lamp to light —
U993 Outputting a VTC-PG pattern —
U998 Outputting the memory list —

Maintenance item contents

Initial

70

* Initial setting for executing maintenance item U020

1-4-3

2BT

(3) Contents of maintenance mode items

Maintenance

item No.
U000 Outputting an own-status report

Description

Outputs lists of the current settings of the maintenance items, and paper jam and service call occurrences.

Purpose

To check the current setting of the maintenance items, or paper jam or service call occurrences.
Before initializing the backup RAM, output a list of the current settings of the maintenance items to reenter the
settings after initialization or replacement.

Method

1. Press the start key. A selection item appears.

2. Select the item to be output using the copy exposure adjustment keys.

Display Output list

d-L List of the current settings of the maintenance modes
J-L List of the paper jam occurrences
C-L List of the service call occurrences

3. Press the start key. The test copy mode is entered and a list is output.

1

When A4/11" × 8

/2" paper is available, a report of this size is output. If not, specify the paper feed location.

When output is complete, the selected item appears.

Completion

Press the stop/reset key while a selection item is displayed. The indication for selecting a maintenance item
No. appears.

U001 Exiting the maintenance mode

Description

Exits the maintenance mode and returns to the normal copy mode.

Purpose

To exit the maintenance mode.

Method

Press the start key. The normal copy mode is entered.

U004 Setting the machine number

Description

Displays and changes the machine number.

Purpose

To check or set the machine number.

Method

Press the start key. The currently set machine number is displayed.

Setting

1. Select the item by lighting a copy exposure indicator using the copy exposure adjustment keys.

2. Enter the last six digits of the machine number using the numeric or zoom +/– keys.
Do not enter the first two digits, 3 and 7.

Copy exposure indicator Description Setting range Initial setting

Exp. 1 First 3 digits 000 to 999 000
Exp. 3 Last 3 digits 000 to 999 000

3. Press the start key. The machine number is set. The indication for selecting a maintenance item No.
appears.

Completion

To exit this maintenance item without changing the current setting, press the stop/reset key. The indication for
selecting a maintenance item No. appears.

Description

1-4-4

2BT

Maintenance

item No.

U005 Copying without paper

Description

Simulates the copy operation without paper feed.

Purpose

To check the overall operation of the machine.

Method

1. Press the start key. A selection item appears.

2. Select the item to be operated using the copy exposure adjustment keys.

Display Operation

P Only the copier operates.

3. Press the interrupt key.

4. Set the operation conditions required. Changes in the following settings can be made.

• Paper feed locations

• Magnifications

• Copy density

• Keys on the operation panel other than the energy saver (preheat) key

5. To control the paper feed pulley, remove all the paper in the drawers, or the drawers. With the paper
present, the paper feed pulley does not operate.

6. Press the start key. The operation starts.
Copy operation is simulated without paper under the set conditions. When operation is complete, the
selected item appears.

7. To stop continuous operation, press the stop/reset key.

Completion

Press the stop/reset key at the screen for selecting an item. The indication for selecting a maintenance item No.
appears.

U020 Initializing all data

Description

Initializes all the backup RAM on the main PCB to return to the original settings.

Purpose

Used when replacing the main PCB.

Method

1. Press the start key.

2. Select “on” using the zoom +/– keys.

Display Operation

– – – Canceling initialization
on Executing initialization

3. Press the start key. All data in the backup RAM is initialized, and the original settings for inch specifications
are set.
When initialization is complete, the machine automatically returns to the same status as when the main
switch is turned on.

Completion

To exit this maintenance item without executing initialization, press the stop/reset key. The indication for
selecting a maintenance item No. appears.

Description

1-4-5

2BT

Maintenance

item No.
U021 Initializing memories

Description

Initializes the setting data other than that for adjustments due to variations between respective machines, i.e.,
settings for counters, service call history and mode settings. As a result, initializes the backup RAM according
to the specifications depending on the destination selected in U252.

Purpose

Used to return the machine settings to the factory settings.

Method

1. Press the start key.

2. Select “on” using the zoom +/– keys.

Display Operation

– – – Canceling initialization
on Executing initialization

3. Press the start key. All data other than that for adjustments due to variations between machines is

initialized based on the destination setting. When initialization is complete, the machine automatically
returns to the same status as when the main switch is turned on.

Completion

Press the stop/reset key. The indication for selecting a maintenance item No. appears.

U022 Initializing backup data

Description

Initializes only the data set for the engine or scanner section.

Purpose

To be executed after replacing the scanner unit.

Method

1. Press the start key. A selection item appears.

2. Select the item to be initialized using the copy exposure adjustment keys.

Display Operation

A Engine
b Scanner

3. Press the start key.

4. Select “on” using the zoom +/– keys.

Display Operation

– – – Canceling initialization
on Executing initialization

5. Press the start key. The data for the engine or scanner section (U060 to 099, U403, U404 and U990) is

initialized.

Completion

Press the stop/reset key. The indication for selecting a maintenance item No. appears.

Description

1-4-6

2BT

Maintenance

item No.

U030 Checking motor operation

Description

Drives the drive motor.

Purpose

To check the operation of the drive motor.

Method

1. Press the start key. A selection item appears.

Display Motor

A Drive motor (DM)

2. Press the start key. The motor operates.

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

Completion

Press the stop/reset key after operation stops. The indication for selecting a maintenance item No. appears.

U031 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.
While each switch is turned on, a segment of the 7-segment display lights. Segments of the 7-segment
display and the switches correspond as follows:

Segments of the 7-segment display Switch

Description

ON

ON

Completion

Press the stop/reset key. The indication for selecting a maintenance item No. appears.

U032 Checking clutch operation

Description

Turns each clutch on.

Purpose

To check the operation of each clutch.

Method

1. Press the start key. A selection item appears.

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

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

Display Clutch

P1 Paper feed clutch (PFCL)
Pb Bypass paper feed clutch (BYPPFCL)
2F Registration clutch (RCL)

Completion

Press the stop/reset key. The indication for selecting a maintenance item No. appears.

Eject switch (ESW)

Registration switch (RSW)

1-4-7

2BT

Maintenance

item No.
U033 Checking main switch operation

Description

Turns the main switch on by energizing the main switch off solenoid.

Purpose

To check the operation of the main switch off solenoid in auto shutoff mode.

Method

1. Press the start key. "A" appears.

2. Press the start key. The main switch is turned on.

Completion

Press the stop/reset key. The indication for selecting a maintenance item No. appears.

U034 Adjusting the print start timing

Adjustment

See pages 1-6-8 and 9.

U042 Setting the LSU type

Description

Sets the type of the LSU installed in the copier.

Purpose

Used when replacing the LSU.

Method

1. Press the start key. A selection item appears.

2. Select the LSU type using the zoom +/– keys.

Display Description

A Type A
b Type b
C Type C

Initial setting: b

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

Completion

To exit this maintenance item without changing the current setting, press the stop/reset key. The indication for
selecting a maintenance item No. appears.

U051 Adjusting the amount of slack in the paper

Adjustment

See page 1-6-11.

Description

1-4-8

2BT

Maintenance

item No.

U053 Performing fine adjustment of the motor speed

Description

Performs fine adjustment of the speeds of the motors.

Purpose

Used to adjust the speed of the respective motors when the magnification is not correct.

Method

Press the start key.

Setting

1. Select the item by lighting a copy exposure indicator using the copy exposure adjustment keys.

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

Copy exposure indicator Description Setting range Initial setting

Exp. 1 Drive motor speed adjustment –7.0 to +7.0 0
Exp. 3 Polygon motor speed adjustment –5.0 to +2.0 0

Drive motor speed adjustment (unit: %)
Increasing the setting makes the image longer in the auxiliary scanning direction, and decreasing it makes
the image shorter in the auxiliary scanning direction.
Polygon motor speed adjustment (unit: %)
Increasing the setting makes the image longer in the main scanning direction and shorter in the auxiliary
scanning direction; decreasing the setting makes the image shorter in the main scanning direction and
longer in the auxiliary scanning direction.

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

Test copy mode

While this maintenance item is being performed, a VTC pattern shown below is output in test copy mode.

1

Correct values for an A4/8

/2" × 11" output are:

A = 260 ± 2.6 mm
B = 180 ± 1.8 mm

Description

B

A

Figure 1-4-1

Adjustment

1. Press the size select key. The machine enters the test copy mode.

2. Press the start key. Output an A4/8

3. Measure A and B on the VTC pattern (Figure 1-4-1), and perform the following adjustments if they are
different from the correct sizes:

A: Drive motor speed adjustment
B: Polygon motor speed adjustment

Completion

Press the stop/reset key at the screen for selecting an item. The indication for selecting a maintenance item No.
appears.

1

/2" × 11" VTC pattern.

1-4-9

2BT

Maintenance

item No.
U060 Adjusting the scanner input properties

Description

Adjusts the image scanning density.

Purpose

Used when the entire image appears too dark or light.

Method

Press the start key.

Setting

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

Description Setting range Initial setting

Image scanning density 0 to 23 12

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

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

Test copy mode

While this maintenance item is being performed, copying from an original can be made in test copy mode.

Completion

Press the stop/reset key at the screen for selecting an item. The indication for selecting a maintenance item No.
appears.

Caution

The following settings are also reset to the initial values by performing this maintenance item:

• Exposure density gradient set in maintenance mode (U093)

• Exposure set in the copy default item of the copier management mode

U061 Turning the exposure lamp on

Description

Turns the exposure lamp on.

Purpose

To check the exposure lamp.

Method

1. Press the start key. “on” appears.

2. Press the start key. The exposure lamp lights.

3. To turn the exposure lamp off, press the stop/reset key.

Completion

Press the stop/reset key. The indication for selecting a maintenance item No. appears.

U063 Adjusting the shading position

Description

Changes the shading position.

Purpose

Used when white lines continue to appear longitudinally on the image after the shading plate is cleaned. This is
due to flaws or stains inside the shading plate. To prevent this problem, the shading position should be
changed so that shading is possible without being affected by the flaws or stains.

Method

1. Press the start key.

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

Description Setting range Initial setting Change in value per step

Shading position –15 to +15 0 0.254 mm

Increasing the setting moves the shading position toward the machine right, and decreasing it moves the
position toward the machine left.

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

Test copy mode

While this maintenance item is being performed, copying from an original can be made in test copy mode.

Completion

Press the stop/reset key at the screen for adjustment. The indication for selecting a maintenance item No.
appears.

Description

1-4-10

2BT

Maintenance

item No.

Description

U065 Adjusting the scanner magnification

Adjustment

See pages 1-6-22 and 23.

U066 Adjusting the leading edge registration for scanning an original on the contact glass

Adjustment

See page 1-6-24.

U067 Adjusting the center line for scanning an original on the contact glass

Adjustment

See page 1-6-25.

U073 Checking scanner operation

Description

Simulates the scanner operation under arbitrary conditions.

Purpose

To check scanner operation.

Method

1. Press the start key.

2. Select the item to be changed by lighting a copy exposure indicator using the copy exposure adjustment
keys.

3. Change the setting using the zoom +/– keys.

Copy exposure indicator Operating conditions Setting range

Exp. 1 Magnification 50 to 200%
Exp. 3 Paper size See below.
Exp. 5 On and off of the exposure lamp on or off

Paper size for each setting

Setting Paper size Setting Paper size

9 B5 47 Folio
40 A4R 55 8
41 B5R 56 8
42 A5R 58 5

1

/2" × 14"

1

/2" × 11"R

1

/2" × 81/2"R

4. Press the size select key. Scanning starts under the selected conditions.

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

Completion

Press the stop/reset key when scanning stops. The indication for selecting a maintenance item No. appears.

1-4-11

2BT

Maintenance

item No.
U088 Setting the input filter (moiré reduction mode)

Description

Turns moiré reduction mode on and off by switching the input filter on and off.

Purpose

Used to prevent regular density unevenness (moiré) on halftone image areas of the copy image in text mode
and text and photo mode. Such moiré is more likely to appear when an enlargement or reduction copy is made
in text mode from an original containing large halftone image areas.

Method

Press the start key.

Setting

1. Select “on” or “oFF” using the zoom +/– keys.

Display Description

on Moiré reduction mode
oFF Normal copy mode

Initial setting: oFF
If moiré on the copy image is significant, change the setting to “on”. Note that when the moiré reduction

mode is turned on, the resolution may be slightly reduced.

2. Press the start key. The value is set. The indication for selecting a maintenance item No. appears.

Completion

To exit this maintenance item without changing the current setting, press the stop/reset key. The indication for
selecting a maintenance item No. appears.

U089 Outputting a MIP-PG pattern

Description

Selects and outputs a MIP-PG pattern created in the copier.

Purpose

When performing respective image printing adjustments, used to check the machine status apart from that of
the scanner with a non-scanned output MIP-PG pattern.

Method

1. Press the start key.

2. Select the MIP-PG pattern to be output using the copy exposure adjustment keys.

Display Setting Setting range Initial setting

G-5 Gray scale - ­180 Mono level 0 to 255 180
1-d 1-dot level - -

3. Press the size select key. The machine enters the PG pattern output mode.

4. Press the start key. A MIP-PG pattern is output.

Completion

Press the stop/reset key. The indication for selecting a maintenance item No. appears.

Description

1-4-12

2BT

Maintenance

item No.

U091 Checking shading

Description

Performs scanning under the same conditions as before and after shading is performed, displaying the original
scanning values at nine points of the contact glass.

Purpose

To check the change in original scanning values before and after shading. The results may be used to decide
the causes for fixing unevenness (uneven density) of the gray area of an image: either due to optical (shading
or CCD) or other problems.
Also to check the causes for a white or black line appearing longitudinally.

Method

1. Press the start key. A selection item appears.

2. Select the item to be operated using the zoom +/– keys.

Display Output list

on Performs scanning before shading and displays the result.
oFF Performs scanning after shading and displays the result.

3. Press the start key. Scanning is performed under the selected conditions and the result is displayed.

4. Change the measurement point by lighting a copy exposure indicator or making one flash using the copy
exposure adjustment keys. For the correspondence between the measurement points and the copy
exposure indicators, see Figure 1-4-2.

Description

100 mm from the machine

center toward machine rear

Machine center

100 mm from the machine

center toward machine front

123
456
789

Point

1

2

3

4

5

200 mm from the machine left

Copy exposure indicator

exp.1 exp.3 exp.5

exp.1 exp.3 exp.5

exp.1 exp.3 exp.5

exp.1 exp.3 exp.5

exp.1 exp.3 exp.5

Point

6

7

8

9

150 mm from

machine left

300 mm from machine left

Copy exposure indicator

exp.1 exp.3 exp.5

exp.1 exp.3 exp.5

exp.1 exp.3 exp.5

exp.1 exp.3 exp.5

: Off
: On
: Flashing

Figure 1-4-2

1-4-13

2BT

Maintenance

item No.
U091

(cont.)

U092 Adjusting the scanner automatically

When scanning is performed before shading, the scan value at the machine center should be slightly
different from those at the machine front and rear. When scanning is performed after shading, there should
be no difference between respective values. Any differences between the values at machine front and rear
indicates that scanner problem causes the fixing unevenness.
If the displayed results indicate no shading problems, the fixing unevenness (uneven copy density) is
caused by factors other than in the scanner section (shading or CCD).
If a black line appears, the cause may be assumed based on the results of the scanning operation before
shading: if a white line appears, they may be assumed based on the results of the scanning operation after
shading. Note that depending on the thickness and location of the black or white line, it may not be possible
to use this method to determine the cause. This is because the displayed values obtained from scanning at
the limit of nine points are insufficient to provide significant information.

5. Press the stop/reset key. The selected item appears.

Completion

Press the stop/reset key while a selection item is displayed. The indication for selecting a maintenance item
No. appears.

Description

Makes auto scanner adjustments in the order below using the specified original.

• Adjusting the scanner center line (U067)

• Adjusting the scanner leading edge registration (U066)

• Adjusting scanner magnification in the auxiliary direction (U065)

When this maintenance item is performed, the settings in U065, U066 and U067 are also changed.

Purpose

Used to make respective auto adjustments for the scanner.

Method

1. Place the specified original (P/N: 2A168070) on the contact glass.

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 by lighting a copy exposure indicator using the copy exposure

adjustment keys.

Copy exposure indicator Setting value

Exp. 3 Scanner center line
Exp. 5 Scanner leading edge registration
Exp. 1 (flashing) Scanner magnification in the auxiliary scanning direction

If a problem occurs during auto adjustment, “nG” is displayed and operation stops. Lighting the copy
exposure indicator exp. 3 and then exp. 5 using the copy exposure adjustment keys will display the error
code. 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/reset key after auto adjustment is complete. The indication for selecting a maintenance item No.
appears.
If the stop/reset key is pressed during auto adjustment, adjustment stops and no settings are changed.

Description

1-4-14

2BT

Maintenance

item No.

U093 Setting the exposure density gradient

Description

Changes the exposure density gradient in manual density mode, depending on respective image modes (text,
text and photo, photo).

Purpose

To set how the image density is altered by a change of one step in the manual density adjustment. Also used to
make copy image darker or lighter.

Start

1. Press the start key. A selection item appears.

2. Select the image mode to be adjusted by lighting image mode LEDs using the image mode selection key.

3. Press the start key. The machine enters the setting mode.

Image mode LEDs Description

AutoExp.
Text & Photo
Photo
Text

AutoExp.
Text & Photo
Photo
Text

AutoExp.
Text & Photo
Photo
Text

Density in text mode

Density in text and photo mode

Density in photo mode

Description

: Off, : On

1-4-15

2BT

Maintenance

item No.
U093

(cont.)

Setting

1. Select the item to be adjusted by lighting a copy exposure indicator using the copy exposure adjustment

Description

keys.

2. Adjust the setting using the zoom +/– keys.

Copy exposure
indicator

Description Setting range Initial setting

Exp. 1 Change in density when manual density is set dark 0 to 3 0
Exp. 3 Change in density when manual density is set light 0 to 3 0

Increasing the setting makes the change in density larger, and decreasing it makes the change smaller.

Image density

Dark

Light

Light

Density adjustment range: Special area

Set to DARKERSet to LIGHTER

Center

Density adjustment range: Normal

Setting: 0Setting: 3

Density adjustment

Dark

Figure 1-4-3 Exposure density gradient

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

4. Press the stop/reset key. The selected item appears.

Test copy mode

While this maintenance item is being performed, copying from an original can be made in test copy mode.

Completion

Press the stop/reset key while a selection item is displayed. The indication for selecting a maintenance item
No. appears.

1-4-16

2BT

Maintenance

item No.

U100 Setting the surface potential

Description

Changes the surface potential by changing the grid control voltage. Also performs main charging.

Purpose

To set the surface potential or check main charging. Also used when reentering data after initializing the set
data.

Start

1. Press the start key. A selection item appears.

2. Select the item by lighting image mode LEDs using the image mode selection key.

Image mode LEDs Description

AutoExp.
Text & Photo
Photo
Text

AutoExp.
Text & Photo
Photo
Text

: Off, : On

Method for main charger output

1. Select the item using the cpoy exposure adjustment keys.

Display (copy exposure indicator) Description

on1 (exp. 1) Turning the main charger on
on2 (exp. 3) Turning the main charger on and the laser scanner unit

2. Press the start key. The selected operation starts.

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

Setting the grid control voltage

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

Description Setting range Initial setting

Grid control voltage 0 to 255 197

Increasing the setting makes the surface potential higher, and decreasing it makes the potential lower.
Change in value per step: approximately 3.6 V

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

Test copy mode

While this maintenance item is being performed, copying from an original can be made in test copy mode.

Completion

Press the stop/reset key when main charger output stops while a selection item is displayed. The indication for
selecting a maintenance item No. appears.

Description

Setting the developing bias

Setting and checking the transfer voltage

on and off

1-4-17

2BT

Maintenance

item No.
U101 Setting high voltages

Description

Changes the developing bias voltage and transfer voltage by changing the developing bias control voltage and
transfer control voltage. Also checks the transfer output voltage.

Purpose

To check and change high voltages other than the main charger voltage.

Start

1. Press the start key. A selection item appears.

2. Select the item to be set or checked by lighting image mode LEDs using the image mode selection key.

Image mode LEDs Description

: Off, : On

Setting the developing bias

1. Select the item to be adjusted by lighting a copy exposure indicator using the copy exposure adjustment

keys.

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

Copy exposure indicator Description Setting range Initial setting

Exp. 1 Developing bias control voltage 0 to 255 200

Exp. 3 Developing bias control voltage 0 to 255 34

Increasing the setting makes the developing bias higher and the image darker; decreasing it makes the
bias lower and the image lighter.

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

Setting the transfer voltage

1. Select the item to be adjusted by lighting a copy exposure indicator using the copy exposure adjustment

keys.

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

Copy exposure indicator Description Setting range Initial setting

Exp. 1 Transfer control voltage 0 to 255 94
Exp. 3 (on) Turning the transfer voltage – –

Exp. 5 Timing at which the transfer voltage 160 to 360 256

Exp. 1 (flashing) Timing at which the transfer voltage 450 to 650 544

Increasing the exp. 1 setting makes the transfer voltage higher, and decreasing it makes the voltage lower.
Increasing the exp. 5 setting makes the transfer voltage output timing later and improves paper separation
performance.

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

4. To check the transfer voltage output, light the copy exposure indicator exp. 3 using the copy exposure

adjustment keys and press the start key. The currently set transfer voltage is output.

5. To stop the transfer voltage output, press the stop/reset key.

Test copy mode

While this maintenance item is being performed, copying from an original can be made in test copy mode.

Completion

Press the stop/reset key while a selection item is displayed. The indication for selecting a maintenance item
No. appears.

AutoExp.
Text & Photo
Photo
Text

AutoExp.
Text & Photo
Photo
Text

Description

Setting the developing bias

Setting and checking the transfer voltage

during image formation

during no image formation

output on

output turns on

output turns off timing

1-4-18

2BT

Maintenance

item No.

U109 Setting the drum type

Description

Sets the type of the drum installed in the copier.

Purpose

To prevent variations in halftone due to differences in drum sensitivity.

Method

Press the start key.

Setting

1. Select the drum type using the zoom +/– keys.

Display Description

A Type A
b Type b
C Type C
d Type d

Initial setting: b

2. Press the start key. The setting is set. The indication for selecting a maintenance item No. appears.

Completion

To exit this maintenance item without changing the current setting, press the stop/reset key. The indication for
selecting a maintenance item No. appears.

U110 Checking/clearing the drum count

Description

Displays the drum counts for checking, clearing or changing the figure, which is used as a reference when
correcting the main charger potential output.

Purpose

To check the drum status. Also used to clear the count after replacing the drum during regular maintenance.
Since the count was cleared before shipping, do not clear it when installing.

Method

1. Press the start key.

2. Select the item by lighting a copy exposure indicator using the copy exposure adjustment keys.

Copy exposure indicator Description Setting range Initial setting

Exp. 1 First 3 digits 000 to 999 000
Exp. 3 Last 3 digits 000 to 999 000
Exp. 5 Clearing the count ——— ———

Description

Clearing

1. Light exp. 5.

2. Press the start key. The count is cleared, and the indication for selecting a maintenance item No. appears.

Setting

1. Change the count using the zoom +/– keys.

2. Press the start key. The count is set, and the indication for selecting a maintenance item No. appears.

Completion

To exit the maintenance mode without changing the count, press the stop/reset key. The indication for selecting
a maintenance item No. appears.

1-4-19

2BT

Maintenance

item No.

U111 Checking/clearing the drum drive time

Description

Displays the drum drive time for checking, clearing or changing a figure, which is used as a reference when
correcting the high voltage based on time.

Purpose

To check the drum status. Also used to clear the drive time after replacing the drum.

Method

1. Press the start key.

2. Select the item by lighting a copy exposure indicator using the copy exposure adjustment keys.

Copy exposure indicator Description Setting range Initial setting

Exp. 1 First 2 digits 00 to 59 (min) 00
Exp. 3 Last 3 digits 000 to 999 (min) 000
Exp. 5 Clearing the drive time ——— ———

Clearing

1. Light exp. 5.

2. Press the start key. The time is cleared, and the indication for selecting a maintenance item No. appears.

Setting

1. Change the drive time (in minutes) using the zoom +/– keys.

2. Press the start key. The time is set, and the indication for selecting a maintenance No. appears.

Completion

To exit this maintenance item without changing the time, press the stop/reset key. The indication for selecting
a maintenance item No. appears.

U130 Initial setting for the developer

Description

Automatically sets the toner sensor control voltage and toner feed start level for the installed developer.

Purpose

To set the initial settings for the developer when installing the machine or replacing the developer.

Method

1. Press the start key.

2. Press the start key. The initial settings for the developer is set, and the result is displayed.

3. Display the setting value for each item by lighting the respective copy exposure indicator using the copy

exposure adjustment keys.

Copy exposure indicator Description

Exp. 1 Toner sensor output value
Exp. 3 Toner sensor control voltage
Exp. 5 Toner feed start level
Exp. 1 (flashing) Absolute humidity

Description

1-4-20

Supplement

The following data is also renewed or cleared by performing this maintenance item:

• Renewing the toner sensor control voltage (U131)

• Renewing the toner feed start level (U156)

• Clearing the developing drive time (U157)

• Clearing the developing count (U158)

• Resetting the toner feed start level and toner empty detection

Completion

After initial setting is complete, press the stop/reset key. The indication for selecting a maintenance item No.
appears.

2BT

Maintenance

item No.

U131 Setting the toner sensor control voltage

Description

Displays or changes the toner sensor control voltage automatically set in maintenance item U130.

Purpose

To check the automatically set toner sensor control voltage. Also to change the toner density if an image is too
dark or light.

Method

Press the start key. The current setting for the toner sensor control voltage is displayed.

Setting

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

Description Setting range Initial setting

Toner sensor control voltage 0 to 255 157

Increasing the setting makes the density higher, and decreasing it makes the density lower.
Increasing the setting too high may result in toner scattering.

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

Completion

Press the stop/reset key. The indication for selecting a maintenance item No. appears.

U132 Replenishing toner forcibly

Description

Replenishes toner forcibly until the toner sensor output value reaches the toner feed start level.

Purpose

Used when the toner empty is detected frequently.

Method

1. Press the start key.

2. Press the start key. Operation starts, and the current data is displayed.
Toner is replenished until the toner sensor output value reaches the toner feed start level.

3. Display each data by lighting the respective copy exposure indicator using the copy exposure adjustment
keys.

Copy exposure indicator Description

Exp. 1 Toner sensor output value after start key is pressed
Exp. 3 Current toner feed start level
Exp. 5 Current toner sensor control voltage
Exp. 1 (flashing) Absolute humidity

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

Completion

Press the stop/reset key when toner replenishment stops. The indication for selecting a maintenance item No.
appears.

U135 Checking toner feed motor operation

Description

Drives the toner feed motor.

Purpose

To check the operation of the toner feed motor.

Caution

Note that driving the motor unnecessarily long may cause a toner jam, resulting in machine lockup. Be sure to
drive the motor for only a few seconds.

Method

1. Press the start key. “on” appears.

2. Press the start key. The toner feed motor turns on.

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

Completion

Press the stop/reset key when operation stops. The indication for selecting a maintenance item No. appears.

Description

1-4-21

2BT

Maintenance

item No.
U155 Displaying the toner sensor output

Description

Displays the toner sensor output value, and related data.

Purpose

To check the toner sensor output value.

Method

1. Press the start key.

2. Press the start key. Sampling starts.

3. Display each data by lighting the respective copy exposure indicator using the copy exposure adjustment

keys.

Copy exposure indicator Description

Exp. 1 Toner sensor output value after start key is pressed
Exp. 3 Current toner feed level (value corrected based on humidity

Exp. 5 Current toner sensor control voltage
Exp. 1 (flashing) Absolute humidity

4. Press the stop/reset key. The sampling operation stops.

Completion

Press the stop/reset key when operation stops. The indication for selecting a maintenance item No. appears.

U156 Changing the toner control level

Description

Changes the toner feed start level set in maintenance item U130 or the toner empty level to be determined by
the difference from the toner feed start level.

Purpose

To check the toner feed start level and toner empty level.

Method

1. Press the start key.

2. Select the item by lighting a copy exposure indicator using the copy exposure adjustment keys.

Copy exposure indicator Description

Exp. 1 Toner feed start level
Exp. 3 Difference between the toner feed start level and toner empty

Description

and drive time)

level

1-4-22

Setting for the toner feed start level

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

Description Setting range Initial setting

Toner feed start level 0 to 255 113

Increasing the setting makes the toner density lower.

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

Setting for the toner empty level

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

Description Setting range Initial setting

Difference between the toner feed start level 0 to 255 44
and the toner empty level

Increasing the setting makes the toner empty level higher: the toner density is lower when the toner empty
is detected.

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

Completion

To exit this maintenance item without changing the current setting, press the stop/reset key. The indication for
selecting a maintenance item No. appears.

2BT

Maintenance

item No.

U157 Checking/clearing the developing drive time

Description

Displays the developing drive time for checking, clearing or changing a figure, which is used as a reference
when correcting the toner control. It is automatically cleared when U130 is executed.

Purpose

To check the developing drive time after replacing the developer.

Method

1. Press the start key.

2. Select the item by lighting a copy exposure indicator using the copy exposure adjustment keys.

Copy exposure indicator Description Setting range Initial setting

Exp. 1 First 2 digits 00 to 59 (min) 00
Exp. 3 Last 3 digits 000 to 999 (min) 000
Exp. 5 Clearing the drive time ——— ———

Clearing

1. Light exp. 5.

2. Press the start key. The time is cleared, and the indication for selecting a maintenance item No. appears.

Setting

1. Change the drive time (in minutes) using the zoom +/– keys.

2. Press the start key. The time is set, and the indication for selecting a maintenance item No. appears.

Completion

To exit this maintenance item without changing the time, press the stop/reset key. The indication for selecting
a maintenance item No. appears.

U158 Checking/clearing the developing count

Description

Displays the developing count for checking, clearing or changing a figure, which is used as a reference when
correcting the toner control. It is automatically cleared when U130 is executed.

Purpose

To check the developing count after replacing the developer.

Method

1. Press the start key.

2. Select the item by lighting a copy exposure indicator using the copy exposure adjustment keys.

Copy exposure indicator Description Setting range Initial setting

Exp. 1 First 3 digits 000 to 999 000
Exp. 3 Last 3 digits 000 to 999 000
Exp. 5 Clearing the count ——— ———

Description

Clearing

1. Light exp. 5.

2. Press the start key. The count is cleared, and the indication for selecting a maintenance item No. appears.

Setting

1. Change the count using the zoom +/– keys.

2. Press the start key. The count is cleared, and the indication for selecting a maintenance item No. appears.

Completion

To exit this maintenance item without changing the count, press the stop/reset key. The indication for selecting
a maintenance item No. appears.

1-4-23

2BT

Maintenance

item No.
U161 Setting the fixing control temperature

Description

Changes the fixing control temperature.

Purpose

Normally no change is necessary. However, can be used to prevent curling or creasing of paper, or solve a
fixing problem on thick paper.

Method

Press the start key. The screen for selecting an item is displayed.

Setting

1. Select the item to be set by lighting a copy exposure indicator using the copy exposure adjustment keys.

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

Copy exposure
indicator

Exp. 1 Primary stabilization fixing temperature 100 to 165 (°C) 125
Exp. 3 Secondary stabilization fixing temperature 155 to 195 (°C) 180

The temperatures are to be set such that exp. 3 ≥ exp. 1.

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

Completion

To exit this maintenance item without changing the current setting, press the stop/reset key. The indication for
selecting a maintenance item No. appears.

U162 Stabilizing fixing forcibly

Description

Stops the stabilization fixing drive forcibly, regardless of fixing temperature.

Purpose

To forcibly stabilize the machine before the fixing section reaches stabilization temperature.

Method

1. Press the start key. “on” appears.

2. Press the start key. The forced stabilization mode is entered, and stabilization operation stops regardless

of fixing temperature. The indication for selecting a maintenance item No. appears.
To exit the forced stabilization mode, turn the power off and on.

Completion

Press the stop/reset key. The indication for selecting a maintenance item No. appears.

U163 Resetting the fixing problem data

Description

Resets the detection of a service call code indicating a problem in the fixing section.

Purpose

To prevent accidents due to an abnormally high fixing temperature.

Method

1. Press the start key. “CLE” appears.

2. Press the start key. The fixing problem data is initialized.

Completion

Press the stop/reset key. The indication for selecting a maintenance item No. appears.

Description Setting range Initial setting

Description

1-4-24

2BT

Maintenance

item No.

U170 Setting the drum cleaning mode

Description

Sets whether or not to apply toner to the drum and perform drum cleaning every paper interval.

Purpose

Set to “on” if an image problem occur such as black dots.

Method

Press the start key.

Setting

1. Select either “on” or “oFF” using the zoom +/– keys.

Display Description

on Drum cleaning mode on
oFF Drum cleaning mode off

Initial setting: off

2. Press the start key. The setting is set, and the indication for selecting a maintenance item No. appears.

Completion

To exit this maintenance item without changing the current setting, press the stop/reset key. The indication for
selecting a maintenance item No. appears.

U196 Turning the fixing heater on

Description

Turns the fixing heater on.

Purpose

To check fixing heater.

Method

1. Press the start key. “on” appears.

2. Press the start key. The fixing heater turns on for 1 s and then turns off.

Completion

Press the stop/reset key when fixing heater is off. The indication for selecting a maintenance item No. appears.

U199 Checking the fixing temperature

Description

Displays the fixing temperature and the ambient temperature.

Purpose

To check the fixing temperature and the ambient temperature.

Method

1. Press the start key.

2. Display each temperature by lighting the respective copy exposure indicator using the copy exposure
adjustment keys.

Copy exposure indicator Description

Exp. 1 Fixing temperature (°C)
Exp. 3 Ambient temperature (°C)

Description

Completion

Press the stop/reset key. The indication for selecting a maintenance item No. appears.

U200 Turning all LEDs on

Description

Turns all the LEDs on the operation panel on.

Purpose

To check if all the LEDs on the operation panel light.

Method

Press the start key. All the LEDs on the operation panel light.
Press the stop/reset key or wait for 10 s. The LEDs turns off, and the indication for selecting a maintenance
item No. appears.

1-4-25

2BT

Maintenance

item No.
U207 Checking the operation panel keys

Description

Checks operation of the operation panel keys.

Purpose

To check operation of all the keys and LEDs on the operation panel.

Method

1. Press the start key.

2. “1” appears on the copy quantity display and the leftmost LED on the operation panel lights.

3. As the keys on the operation panel are pressed in order from the left to right, the figure shown on the copy

quantity display increases in increments of 1. If there is an LED corresponding to the key pressed, the LED
will light.

4. When all the keys on the operation panel have been pressed, all the LEDs light for up to 10 seconds.

5. When the LEDs go off, press the start key. All the LEDs light for 10 seconds again.

Completion

Press the stop/reset key. The indication for selecting a maintenance item No. appears.

• After this check starts, the operation cannot be canceled until all the keys are checked.

U208 Setting the paper size

Description

Sets the size of paer loaded in the drawer.

Purpose

Used when changed the paper size in the drawer.

Method

1. Press the start key.

2. Select the paper size using the zoom +/- keys.

Display Paper size

A4r/814 A4R/8
A5r/811 A5R/8
FOL/5H8 Folio/5

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

Completion

To exit this maintenance mode without the current setting, press the stop/reset key while a selection item is
displayed. The indication for selecting a maintenance item No. appears.

Description

1

/2" × 14"

1

/2" × 11"R

1

/2" × 81/2"R

1-4-26

2BT

Maintenance

item No.

U252 Setting the destination

Description

Switches the operations and screens of the machine according to the destination.

Purpose

To be executed after replacing the backup RAM on the main PCB or initializing the backup RAM by running
maintenance item U020, in order to return the setting to the value before replacement or initialization.

Method

Press the start key.

Setting

1. Select the destination using the zoom +/– keys.

Display Description

JPn Metric (Japan) specifications
Inc Inch (North America) specifications
EUP Metric (Europe) specifications
ASA Metric (Asia Pacific) specifications

2. Press the start key. The setting is set, and the machine automatically returns to the same status as when
the power is turned on.

Completion

To exit this maintenance item without changing the current count, press the stop/reset key. The indication for
selecting a maintenance item No. appears.

Description

1-4-27

2BT

Maintenance

item No.
U254 Turning auto start function on/off

Description

Selects if the auto start function is turned on.

Purpose

Normally no change is necessary. If incorrect operation occurs, turn the function off: this may solve the
problem.

Method

Press the start key.

Setting

1. Select either “on” or “oFF” using the zoom +/– keys.

Display Description

on Auto start function on
oFF Auto start function off

Initial setting: on

2. Press the start key. The setting is set, and the indication for selecting a maintenance item No. appears.

Completion

To exit this maintenance item without changing the current setting, press the stop/reset key. The indication for
selecting a maintenance item No. appears.

Description

1-4-28

2BT

Maintenance

item No.

U255 Setting auto clear time

Description

Sets the time to return to initial settings after copying is complete.

Purpose

To be set according to frequency of use. Set to a comparatively long time for continuous copying at the same
settings, and a comparatively short time for frequent copying at various settings.

Method

Press the start key. The current setting is displayed.

Setting

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

Description Setting range Initial setting

Auto clear time 0 to 270 90

The setting can be changed by 30 s per step.
When set to 0, the auto clear function is cancelled.

2. Press the start key. The value is set, and the indication for selecting a maintenance item No. appears.

Completion

To exit this maintenance item without changing the current setting, press the stop/reset key. The indication for
selecting a maintenance item No. appears.

U256 Turning auto preheat/energy saver function on/off

Description

Selects if the auto preheat/energy saver function is turned on. When set to ON, the time to enter preheat/
energy saver mode can be changed in copy management mode.

Purpose

According to user request, to set the preheat time to save energy, or enable copying promptly without the
recovery time from preheat mode.

Method

Press the start key.

Setting

1. Select “on” or “oFF” using the zoom +/– keys.

Display Description

on Auto preheat/energy saver function on
oFF Auto preheat/energy saver function off

Initial setting: on

2. Press the start key. The setting is set, and the indication for selecting a maintenance item No. appears.
When the setting is changed from “oFF” to “on”, the auto preheat time is set to the initial setting of 15
minutes.

Completion

To exit this maintenance item without changing the current setting, press the stop/reset key. The indication for
selecting a maintenance item No. appears.

Description

1-4-29

2BT

Maintenance

item No.

Description

U258 Switching copy operation at toner empty detection

Description

Selects if continuous copying is enabled after toner empty is detected, and sets the number of copies that can
be made after the detection.

Method

Press the start key. The current setting is displayed.

Start

1. Press the start key. A selection item appears.

2. Select the item by lighting image mode LEDs using the image mode selection key.

Image mode LEDs Description

AutoExp.
Text & Photo
Photo
Text

AutoExp.
Text & Photo
Photo
Text

Switching copy operation at toner empty detection between
single or continuous copying

Setting the number of copies after toner empty detection

: Off, : On

Setting copy operation at toner empty detection between single and continuous copying

1. Select single or continuous copying using the zoom +/– keys.

Display Description

Sin Enables only single copying.
Con Enables single and continuous copying.

Initial setting: Sin

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

Setting the number of copies after toner empty detection

1. Set the number of copies that can be made using the zoom +/– keys.

Description Setting range Initial setting

Number of copies after toner empty detection 0 to 200 (copies) 70

The setting can be changed by 5 copies per step.
When set to 0, the number of copies is not limited regardless of the setting for single or continuous copying.

2. Press the start key.

Completion

Press the stop/reset key while a selection item is displayed. The indication for selecting a maintenance item
No. appears.

1-4-30

2BT

Maintenance

item No.

U260 Changing the copy count timing

Description

Changes the copy count timing for the total counter and other counters.

Purpose

To be set according to user (copy service provider) request.
If a paper jam occurs frequently in the eject section when the number of copies is counted at the time of paper
ejection, copies are provided without copy counts. The copy service provider cannot charge for such copying.
To prevent this, the copy timing should be made earlier.
If a paper jam occurs frequently in the paper conveying or fixing sections when the number of copies is counted
before the paper reaches those sections, copying is charged without a copy being made. To prevent this, the
copy timing should be made later.

Method

Press the start key.

Setting

1. Select the copy count timing using the zoom +/– keys.

Display Description

FEd When secondary paper feed starts
EJE When the paper is ejected

Initial setting: EJE

2. Press the start key. The setting is set, and the indication for selecting a maintenance item No. appears.

Completion

To exit this maintenance item without changing the current setting, press the stop/reset key. The indication for
selecting a maintenance item No. appears.

Description

1-4-31

2BT

Maintenance

item No.
U332 Setting the size conversion factor

Description

Sets the factor for converting each paper size into A4/11" × 8

1

11" × 8

/2" size using the factor set in this maintenance item. Values set are displayed in the user simulation.

Purpose

To set the factor to convert the black ratio of each paper size for A4/11" × 8

Method

1. Press the start key.

2. Select the paper size to be set by lighting a copy exposure indicator or making one flash using the copy

exposure adjustment keys.

Metric specifications

Image mode LEDs

: Off, : On

Inch specifications

Image mode LEDs

AutoExp.

Text & Photo

Photo

Text

: Off, : On

3. Change the setting using the zoom +/– keys.

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

Completion

To exit this maintenance item without changing the current setting, press the stop/reset key. The indication for
selecting a maintenance item No. appears.

Description

1

/2". The black ratio is converted for the A4/

1

/2" size.

Copy exposure
indicator setting

Paper size Setting range

Initial

Exp. 1 (lit) A4R 0.0 to 3.0 1.0
Exp. 3 (lit) B5R 0.0 to 3.0 0.7
Exp. 5 (lit) A5R 0.0 to 3.0 0.5
Exp. 1 (flashing) B6R 0.0 to 3.0 0.4
Exp. 3 (flashing) A6R 0.0 to 3.0 0.3
Exp. 5 (flashing) Postcard 0.0 to 3.0 0.3
Exp. 1 (flashing) Folio 0.0 to 3.0 1.0
Exp. 3 (flashing) Non-standard 0.0 to 3.0 1.0

Copy exposure
indicator setting

Exp. 1 (lit) 8
Exp. 3 (lit) 8
Exp. 5 (lit) 5

Paper size Setting range

1

/2" × 14" 0.0 to 3.0 1.5

1

/2" × 11"R 0.0 to 3.0 1.0

1

/2" × 81/2"R 0.0 to 3.0 0.5

Initial

Exp. 1 (flashing) Non-standard 0.0 to 3.0 1.0

1-4-32

2BT

Maintenance

item No.

U348 Setting the copy density adjustment range

Description

Selects the adjustment range for copy density from NORMAL and SPECIAL AREA (for wider range).

Purpose

To change the setting according to user request.
When especially dark or light density is requested, set to SPECIAL AREA.

Method

Press the start key.

Setting

1. Select the density range using the zoom +/– keys.

Display Description

SPC (special area) 5 steps (enlargement mode)
nrL (normal) 3 steps

Initial setting: Normal

2. Press the start key. The setting is set, and the indication for selecting a maintenance item No. appears.

Completion

To exit this maintenance item without changing the current setting, press the stop/reset key. The indication for
selecting a maintenance item No. appears.

U402 Adjusting margins of image printing

Adjustment

See page 1-6-10.

U403 Adjusting margins for scanning an original on the contact glass

Adjustment

See page 1-6-26.

Description

1-4-33

2BT

Maintenance

item No.

Description

U901 Checking/clearing 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. Also to clear the counts after replacing the consumable parts.

Method

1. Press the start key.

2. Select the paper feed location (group No.) for which the count is to be checked or cleared by lighting image

mode LEDs using the image mode selection key.

3. Change the indication of the copy quantity display by lighting a copy exposure indicator using the copy

exposure adjustment keys.

Image mode LED (group No.)

1

2

3

AutoExp.
Text & Photo
Photo
Text

AutoExp.
Text & Photo
Photo
Text

AutoExp.
Text & Photo
Photo
Text

Copy exposure
indicator

Exp. 1 First 3 digits of bypass copy count
Exp. 3 Last 3 digits of bypass copy count
Exp. 5 Clearing the count (CLE)

Exp. 1 First 3 digits of the drawer copy count
Exp. 3 Last 3 digits of the drawer copy count
Exp. 5 Clearing the count (CLE)

Exp. 1 Clearing all counts (CLE)

Copy quantity display (count value)

: Off, : On

Clearing copy counts by paper feed locations

1. Select the paper feed location to clear the count.

2. Light exp. 5 using the copy exposure adjustment key.

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

Clearing copy counts for all paper feed locations

1. Select group 3.

2. Press the start key. The counts are cleared.

Completion

Press the stop/reset key. The indication for selecting a maintenance item No. appears.

1-4-34

2BT

Maintenance

item No.

U903 Checking/clearing the paper jam counts

Description

Displays or clears the jam counts by jam locations.

Purpose

To check the paper jam status. Also to clear the jam counts after replacing consumable parts.

Method

1. Press the start key.

2. Display the jam code to check the count using the copy exposure adjustment keys.

3. Press the start key. The jam count appears. If the jam count is a 4-digit value, the first digit and the last 3
digits are displayed alternately.

4. Press the stop/reset key. The jam code appears again.

Copy exposure

J20

Stop/
reset key

10

adjustment keys

Start key

Copy exposure
adjustment keys

Clearing all jam counts

1. Display “CLE” using the copy exposure adjustment keys. Jam counts cannot be cleared individually.

2. Press the start key. The counts are cleared.

Completion

Press the stop/reset key. The indication for selecting a maintenance item No. appears.

U904 Checking/clearing the service call counts

Description

Displays or clears the service call code counts by types.

Purpose

To check the service call code status by types. Also to clear the service call code counts after replacing
consumable parts.

Method

1. Press the start key.

2. Display the service call code to check the count using the copy exposure adjustment keys.

3. Press the start key. The service call count appears. If the service call count is a 4-digit value, the first digit
and the last 3 digits are displayed alternately.

4. Press the stop/reset key. The service call code appears again.

Description

J22

Stop/
reset key

100

Figure 1-4-4

Copy exposure
adjustment keys

Start key

CLE

Stop/
reset key

011

10

Copy exposure
adjustment keys

Start key

Copy exposure
adjustment keys

100

Stop/
reset key

100

Copy exposure
adjustment keys

Start key

Figure 1-4-5

Clearing all service call counts

1. Display “CLE” using the copy exposure adjustment keys.

2. Press the start key. The counts are cleared.

Completion

Press the stop/reset key. The indication for selecting a maintenance item No. appears.

CLE

1-4-35

2BT

Maintenance

item No.
U910 Clearing the black ratio data

Description

Clears the accumulated black ratio data for A4/11" × 8

Purpose

To clear data as required at times such as during maintenance service.

Method

1. Press the start key.

2. Select “on” using the zoom +/– keys.

Display Operation

– – – Canceling the clearing
on Executing the clearing

3. Press the start key. The accumulated black ratio data is cleared.

Completion

To exit this maintenance item without clearing the data, press the stop/reset key. The indication for selecting a
maintenance item No. appears.

U917 Setting the reading/writing of backup data

Description

Selects whether to read out the backup data on the main PCB to the NVRAM on the memory tool PCB or to
write backup data on the NVRAM on the memory tool PCB to the main PCB.
When the memory is initialized (maintenance items U020, U021, U022 and U252), this is set to read out the
backup data from the main PCB to the NVRAM on the memory tool PCB. To write the backup data to the main
PCB from the NVRAM on the memory tool PCB, change the setting before starting writing.

Purpose

Used when replacing the main PCB.

Method

1. Press the start key.

2. Select “rd” or “rE” using the zoom +/– keys.

Display Description

rd Reading out the backup data
rE Writing the backup data

3. Press the start key.

Completion

To exit this maintenance item without changing the current setting, press the stop/reset key. The indication for
selecting a maintenance item No. appears.

Description

1

/2" sheets.

1-4-36

2BT

Maintenance

item No.

U990 Checking/clearing the time for the exposure lamp to light

Description

Displays or clears the accumulated time for the exposure lamp to light.

Purpose

To check duration of use of the exposure lamp. Also to clear the accumulated time for the lamp after
replacement.

Method

1. Press the start key.

2. Change the indication of the copy quantity display by lighting a copy exposure indicator using the copy
exposure adjustment keys.

Copy exposure indicator Copy quantity display

Exp. 1 First 3 digits of the lamp-on time (minutes)
Exp. 3 Last 3 digits of the lamp-on time (minutes)
Exp. 5 Clearing the lamp-on time (CLE)

Clearing

1. Light exp. 5.

2. Press the start key. The accumulated time is cleared, and the indication for selecting a maintenance item
No. appears.

Completion

To exit this maintenance item without changing the accumulated time, press the stop/reset key. The indication
for selecting a maintenance item No. appears.

Description

1-4-37

2BT

Maintenance

item No.
U993 Outputting a VTC-PG pattern

Description

Selects and outputs a VTC-PG pattern created in the copier.

Purpose

When performing respective image printing adjustments, used to check the machine status apart from that of
the scanner with a non-scanned output VTC-PG pattern.

Method

1. Press the start key.

2. Select the VTC-PG pattern to be output using the copy exposure adjustment keys.

Display PG pattern to be output Purpose

0

1

2

Description

• Center line adjustment

• Lateral squareness adjustment

• Magnification adjustment

• Checking the fixing performance (fixing pressure)

3. Press the size select key. The machine enters the PG pattern output mode.

4. Press the start key. A VTC-PG pattern is output.

Completion

Press the stop/reset key. The indication for selecting a maintenance item No. appears.

1-4-38

2BT

Maintenance

item No.

U998 Outputting the memory list

Description

Outputs the list of memory.

Purpose

To output the list as required.

Method

Press the start key.

Entering the address

1. Select the item by lighting a copy exposure indicator using the copy exposure adjustment keys.

Copy exposure indicator Description Setting range

Exp. 1 Bit 16 to bit 23 of the address 00 to FF
Exp. 3 Bit 8 to bit 15 of the address 00 to FF
Exp. 5 Bit 0 to bit 7 of the address 00 to FF

2. Enter the address in hexadecimal using the zoom +/- keys.

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

Printing the list

1. Press the size select key. The machine enters the list output mode.

2. Press the start key. The list is printed.

Completion

Press the stop/reset key. The indication for selecting a maintenance item No. appears.

Description

1-4-39

2BT

1-5-1 Paper misfeed detection

(1) Paper misfeed indication

When a paper misfeed occurs, the copier immediately stops copying and displays the jam location on the operation panel.
Paper misfeed counts sorted by the detection condition can be checked in maintenance item U903.
To remove paper jammed in the copier, open the paper conveying cover or pull the drawer out.
Paper misfeed detection can be reset by opening and closing the respective covers to turn safety switch off and on.

1 Misfeed in paper feed section
2 Misfeed in paper conveying section

2

1

Figure 1-5-1

Jam code Contents See pape

PF
PF
00
20
22
40
50
95
96
98

No paper feed from drawer
No paper feed from bypass
Jam at power-on
Multiple sheets in copier paper feed section
Multiple sheets in bypass tray
Misfeed in fixing section
Misfeed in eject section
Misfeed in registration section
Main charger problem
BD steady-state problem

P.1-5-3
P.1-5-3
P.1-5-3
P.1-5-3
P.1-5-3
P.1-5-4
P.1-5-4
P.1-5-4
P.1-5-4
P.1-5-4

Table 1-5-1

1-5-1

2BT

(2) Paper misfeed detection conditions

ESW

RSW

Figure 1-5-2

1-5-2

2BT

1. Jam at power-on

• One or more of the switches in the paper feed conveying system is on when the main switch is turned on (jam code 00).

2. Paper feed section

• No paper feed from drawer (“PF” appears on the copy quantity display.)
The registration switch (RSW) does not turn on within 1255 ms of the paper feed clutch (PFCL) turning on.

PFCL OFF

ON

RSW

1255 ms

Timing chart 1-5-1

• No paper feed from bypass (“PF” appears on the copy quantity display.)
The registration switch (RSW) does not turn on within 1390 ms of the bypass paper feed clutch (BYPPFCL) turning on.

BYPPFCL OFF

RSW

1390 ms

OFF
ON

ON
OFF
ON

Timing chart 1-5-2

• Multiple sheets in copier paper feed section (jam code 20)
The registration switch (RSW) does not turn off within the time required to convey the length of the used paper size plus 2273
ms of turning on (when paper is fed from the drawer).

RSW OFF

Paper size + 2273 ms

ON

Timing chart 1-5-3

• Multiple sheets in bypass tray (jam code 22)
The registration switch (RSW) does not turn off within 5055 ms of turning on (when paper is fed from the bypass tray).

RSW OFF

5055 ms

ON

Timing chart 1-5-4

1-5-3

2BT

3. Fixing section

• Misfeed in fixing section (jam code 40)
The eject switch (ESW) does not turn on within 2809 ms of the registration clutch (RCL) turning on.

RCL OFF

ON

ESW

2809 ms

OFF
ON

Timing chart 1-5-5

4. Eject section

• Misfeed in eject section (jam code 50)
The eject switch (ESW) does not turn off within 2809 ms of the registration switch (RSW) turning off.

OFF

RSW

2809 ms

ESW

Timing chart 1-5-6

ON
OFF
ON

5. Misfeed in registration section

• Secondary paper feed does not start within 35 s of the end of primary paper feed. (jam code 95)

6. Main charger problem

• Leakage of the main charger is detected. (jam code 96)

7. BD steady-state problem

• BD steady-state problem is detected. (jam code 98)

1-5-4

(3) Paper misfeeds

Problem Causes/check procedures Corrective measures

(1)
A paper jam in the
paper feed,
conveying, fixing or
eject section is
indicated as soon as
the main switch is
turned on.

A piece of paper torn from
copy paper is caught
around the registration
switch or eject switch.

Defective registration
switch.

Defective eject switch.

Check visually and remove any found.

With 5 V DC present at CN3-14 on the main PCB, check if CN3­13 on the main PCB remains low when the registration switch is
turned on and off. If it does, replace the registration switch.

With 5 V DC present at CN11-6 on the main PCB, check if
CN12-5 on the main PCB remains low when the eject switch is
turned on and off. If it does, replace the eject switch.

2BT

(2)
A paper jam in the
paper feed section
is indicated during
copying (no paper
feed from drawer).
“PF” appears on the
copy quantity
display.

(3)
A paper jam in the
paper feed section
is indicated during
copying (no paper
feed from bypass).
“PF” appears on the
copy quantity
display.

Paper in the drawer is
extremely curled.

Check if the paper feed
pulleys are deformed.

Broken registration switch
actuator.

Defective registration
switch.

Check if the paper feed
clutch malfunctions.

Electrical problem with the
paper feed clutch.

Paper in the bypass tray is
extremely curled.

Check if the bypass paper
feed pulleys are deformed.

Broken registration switch
actuator.

Defective registration
switch.

Change the paper.

Check visually and replace the pulleys if deformed. (see page 1­6-3).

Check visually and replace the registration switch if its actuator
is broken.

With 5 V DC present at CN3-14 on the main PCB, check if CN3­13 on the main PCB remains low when the registration switch is
turned on and off. If it does, replace the registration switch.

Check and remedy if necessary.

Check (see page 1-5-20).

Change the paper.

Check visually and replace the pulleys if deformed (see page 1­6-5).

Check visually and replace the registration switch if its actuator
is broken.

With 5 V DC present at CN3-14 on the main PCB, check if CN3­13 on the main PCB remains low when the registration switch is
turned on and off. If not, replace the registration switch.

(4)
A paper jam in the
paper feed section
is indicated during
copying (multiple
sheets in paper feed
section).
Jam code 20

Check if the bypass paper
feed clutch malfunctions.

Electrical problem with the
bypass paper feed clutch.

Broken registration switch
actuator.

Defective registration
switch.

Check if the right and left
registration rollers contact
each other.

Check and remedy if necessary.

Check (see page 1-5-20).

Check visually and replace the registration switch if its actuator
is broken.

With 5 V DC present at CN3-14 on the main PCB, check if CN3­13 on the main PCB remains low when the registration switch is
turned on and off. If it does, replace the registration switch.

Check visually and remedy if necessary.

1-5-5

2BT

Problem Causes/check procedures Corrective measures

(5)
A paper jam in the
paper feed section
is indicated during
copying (multiple
sheets in bypass).
Jam code 22

Broken registration switch
actuator.

Defective registration
switch.

Check if the right and left
registration rollers contact
each other.

Check visually and replace the registration switch if its actuator
is broken.

With 5 V DC present at CN3-14 on the main PCB, check if CN3­13 on the main PCB remains low when the registration switch is
turned on and off. If it does, replace the registration switch.

Check visually and remedy if necessary.

(6
A paper jam in the
fixing section is
indicated during
copying (jam in
fixing section).
Jam code 40

(7)
A paper jam in the
eject section is
indicated during
copying (jam in eject
section).
Jam code 50

Check if the registration
clutch malfunctions.

Electrical problem with the
registration clutch.

Broken eject switch
actuator.

Defective eject switch.

Broken registration switch
actuator.

Defective registration
switch.

Broken eject switch
actuator.

Defective eject switch.

Check and remedy if necessary.

Check (see page 1-5-19).

Check visually and replace the eject switch if its actuator is
broken.

With 5 V DC present at CN11-6 on the main PCB, check if
CN11-5 on the main PCB remains low when the eject switch is
turned on and off. If it does, replace the eject switch.

Check visually and replace the registration switch if its actuator
is broken.

With 5 V DC present at CN3-14 on the main PCB, check if CN3­13 on the main PCB remains low when the registration switch is
turned on and off. If it does, replace the registration switch.

Check visually and replace the eject switch if its actuator is
broken.

With 5 V DC present at CN11-6 on the main PCB, check if
CN11-5 on the main PCB remains low when the eject switch is
turned on and off. If it does, replace the eject switch.

1-5-6

2BT

1-5-2 Self-diagnosis

(1) Self-diagnostic function

This unit is equipped with a self-diagnostic function. When a problem is detected, copying is disabled. "C" and a number
between 011 and 731 altenates, indicating the nature of the problem.
After removing the problem, the self-diagnostic function can be reset by turning safety switch off and back on.

(2) Self diagnostic codes

Code Contents

A011

(C011)

Backup memory data problem

• Data in the specified area of the
backup memory does not match the
specified values.

Causes Check procedures/corrective measures

Problem with the
backup memory
data.

Defective backup
RAM.

Turn safety switch off and back on and run
maintenance item U020 to set the contents
of the backup memory data again.

If the C011 is displayed after re-setting the
backup memory contents, replace the
backup RAM.

Remarks

A100

(C100)

A104

(C104)

Exposure lamp problem

• Check the CCD input value for the
lighting status of the exposure lamp
100 ms after the exposure lamp is lit
and the carriage is moved to the
shading position. If the exposure lamp
does not light, turn off the lamp. After
500 ms, light the lamp again and, a
further 500 ms later, check the CCD
input.
The exposure lamp does not light
after 5 retries.

Optical system problem

• After AGC, correct input is not
obtained at CCD.

Poor contact of
the connector
terminals.

Defective
exposure lamp.

Defective main
PCB or inverter
PCB.

Incorrect shading
position.

CCD PCB output
problem.

Poor contact of
the connector
terminals.

Defective
exposure lamp.

Defective main
PCB or inverter
PCB.

Check the connection of connector CN12
on the main PCB, and the continuity across
the connector terminals. Repair or replace
if necessary.

Replace the exposure lamp.

Replace the main PCB or inverter PCB and
check for correct operation.

Adjust the position of the contact glass
(shading plate). If the problem still occurs,
replace the scanner home position switch.

Replace the ISU.

Check the connection of connector CN12
on the main PCB, and the continuity across
the connector terminals. Repair or replace
if necessary.

Replace the exposure lamp.

Replace the main PCB or inverter PCB and
check for correct operation.

Incorrect shading
position.

CCD PCB output
problem.

Adjust the position of the contact glass
(shading plate). If the problem still occurs,
replace the scanner home position switch.

Replace the ISU.

1-5-7

2BT

Code Contents

A310

(C310)

A400

(C400)

Scanner carriage problem

• The home position is not correct
when the power is turned on or at the
start of copying using the contact
glass.

Polygon motor synchronization
problem

• The polygon motor does not reach a
stable speed within 19 s of the polygon
motor remote signal turning on.

Remarks

Causes Check procedures/corrective measures

Poor contact of
the connector
terminals.

Defective scanner
home position
switch.

Defective main
PCB.

Defective scanner
motor.

Poor contact of
the connector
terminals.

Defective polygon
motor.

Defective power
source PCB.

Check the connection of connector CN15
on the main PCB and the continuity across
the connector terminals. Remedy or
replace if necessary.

Replace the scanner home position switch.

Replace the main PCB and check for
correct operation.

Replace the scanner motor.

Check the connection of connector CN3 on
the main PCB and the continuity across the
connector terminals. Remedy or replace if
necessary.

Replace the LSU.

Check if 24 V DC is present at CN1-2 on
the power source PCB. If not, replace the
power source PCB.

A401

(C401)

A420

(C420)

A510

(C510)

Polygon motor steady-state problem

• The polygon motor rotation is not
stable for 400 ms after the polygon
motor rotation has been stabilized.

BD steady-state problem

• The VTC detects a BD error for 800
ms after the polygon motor rotation
has been stabilizad.

Main charger problem

• MC ALM signal is detected
continuously for 800 ms when MC
REM signal is turned on.

Poor contact of
the connector
terminals.

Defective polygon
motor.

Defective power
source PCB.

Poor contact of
the connector
terminals.

Defective LSU.

Defective main
PCB.

Poor contact of
the high-voltage
transformer PCB
connector
terminals.

Check the connection of connector CN3 on
the main PCB and the continuity across the
connector terminals. Remedy or replace if
necessary.

Replace the LSU.

Check if 24 V DC is present at CN1-2 on
the power source PCB. If not, replace the
power source PCB.

Check the connection of connector CN18
on the main PCB and the continuity across
the connector terminals. Remedy or
replace if necessary.

Replace the LSU.

Replace the main PCB and check for
correct operation.

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

1-5-8

Defective high­voltage
transformer PCB.

Leakage during
main charging.

Replace the high-voltage transformer
PCB.

Check and clean the main charger unit.

2BT

Code Contents

A510

(C510)

C610

Main charger problem

• MC ALM signal is detected
continuously for 800 ms when MC
REM signal is turned on.

Broken fixing heater wire

• It takes 15 s or more for the fixing
temperature to reach 50°C/122°F
after the power is turned on or the
safety switch is turned off and on.

• It takes 10 s or more for the fixing
temperature to reach 100°C/212°F
from 50°C/122°F.

• It takes 24 s or more for the fixing
temperature to reach the secondary
stabilization fixing temperature from
the primary stabilization fixing
temperature.

Remarks

Causes Check procedures/corrective measures

Deformed high­voltage
transformer PCB
terminal spring.

Fixing heater
installed
incorrectly.

Broken fixing
heater wire.

Poor contact in
the fixing unit
thermistor
connector
terminals.

Broken fixing unit
thermistor wire.
Fixing unit
thermistor
installed
incorrectly.

Replace the spring.

Check and reinstall if necessary.

Check for continuity. If none, replace fixing
heater.

Check the connection of connector CN11
on the main PCB and the continuity across
the connector terminals. Remedy or
replace if necessary.

Measure the resistance. If it is ∞ Ω, replace
the fixing unit thermistor.
Check and reinstall if necessary.

C620

Abnormally low fixing unit
thermistor temperature

• The fixing temperature remains below
90°C/194°F for 10 s during copying.

Fixing unit
thermostat
triggered.

Fixing heater
installed
incorrectly.

Broken fixing
heater wire.

Poor contact in
the fixing unit
thermistor
connector
terminals.

Broken fixing unit
thermistor wire.

Fixing unit
thermistor
installed
incorrectly.

Fixing unit
thermostat
triggered.

Check for continuity. If none, replace the
fixing unit thermostat.

Check and reinstall if necessary.

Check for continuity. If none, replace fixing
heater.

Check the connection of connector CN11
on the main PCB and the continuity across
the connector terminals. Remedy or
replace if necessary.

Measure the resistance. If it is ∞ Ω, replace
the fixing unit thermistor.

Check and reinstall if necessary.

Check for continuity. If none, replace the
fixing unit thermostat.

C630

Abnormally high fixing unit
thermistor temperature

• The fixing temperature exceeds
230°C/446°F for 10 s.

Shorted fixing unit
thermistor.

Broken fixing
heater control
circuit on the
power source
PCB.

Measure the resistance. If it is 0 Ω, replace
the fixing unit thermistor.

Replace the power source PCB.

1-5-9

2BT

Code Contents

C710

A730

(C730)

A731

(C731)

Toner sensor problem

• The sensor output voltage is outside
the range of 0.5 to 4.5 V during toner
control.

• The toner sensor control voltage
cannot be set within the setting range
when maintenance item U130 is run.

Broken external temperature
thermistor wire

• The input voltage is above 4.5 V.

Short-circuited external temperature
thermistor

• The input voltage is below 0.5 V.

Remarks

Causes Check procedures/corrective measures

Defective toner
sensor.

Poor contact of
the toner sensor
connector
terminals.

Developer
problem.

Poor contact of
the humidity
sensor PCB
connector
terminals.

Defective external
temperature
thermistor.

Poor contact of
the humidity
sensor PCB
connector
terminals.

Replace the toner sensor.

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

Replace the developer.

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

Replace the humidity sensor PCB.

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

Defective external
temperature
thermistor.

Replace the humidity sensor PCB.

1-5-10

1-5-3 Image formation problems

2BT

(1) No image appears

(entirely white).

See page 1-5-12

(5) A white line appears

longitudinally.

See page 1-5-13

(9) Black dots appear on

the image.

(2) No image appears

(entirely black).

See page 1-5-12

(6) A black line appears

longitudinally.

See page 1-5-14

(10)Image is blurred.

(3) Image is too light.

See page 1-5-13

(7) A black line appears

laterally.

See page 1-5-14

(11)The leading edge of the

image is consistently
misaligned with the
original.

(4) Background is visible.

See page 1-5-13

(8) One side of the copy

image is darker than
the other.

See page 1-5-14

(12)The leading edge of the

image is sporadically
misaligned with the
original.

See page 1-5-15

(13)Paper creases.

See page 1-5-16

(17)Image is out of focus.

See page 1-5-17

See page 1-5-15

(14)Offset occurs.

See page 1-5-16

(18)Image center does not

align with the original
center.

See page 1-5-18

See page 1-5-15

(15)Image is partly missing.

See page 1-5-17

(20)Image contrast is low

(carrier scattering).

See page 1-5-18

See page 1-5-16

(16)Fixing is poor.

See page 1-5-17

1-5-11

2BT

(1) No image appears

(entirely white).

Causes Check procedures/corrective measures

1. No transfer charging.
A. The connector terminals of the high-voltage

transformer PCB make poor contact.

B. Defective main PCB

C. Defective high-voltage transformer PCB.

Causes

1. No transfer charging.

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

Check if CN6-8 on the main PCB goes low when maintenance item
U101 is run. If not, replace the main PCB.

Check if transfer charging takes place when CN1-8 on the high­voltage transformer PCB goes low while maintenance item U101 is
run. If not, replace the high-voltage transformer PCB.

(2) No image appears

(entirely black).

1. No main charging.
A. Broken main charger wire.
B. Leaking main charger housing.
C. The connector terminals of the high-voltage

transformer PCB make poor contact.

D. Defective main PCB.

E. Defective high-voltage transformer PCB.

2. Exposure lamp fails to light.
A. The connector terminals of the exposure

lamp make poor contact.

B. Defective inverter PCB.

C. Defective main PCB.

Causes

1. No main charging.

2. Exposure lamp fails to light.

Causes Check procedures/corrective measures

Replace the main charger unit.
Clean the main charger wire, grid and shield.
Reinsert the connector. Also check for continuity within the

connector cable. If none, remedy or replace the cable.
Check if CN6-13 on the main PCB goes low when maintenance item

U100 is run. If not, replace the main PCB.
Check if main charging takes place when CN1-3 on the high-voltage

transformer PCB goes low while maintenance item U100 is run. If
not, replace the high-voltage transformer PCB.

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

Check if the exposure lamp lights when CN2-1 and 2-4 on the
inverter PCB go low while maintenance item U061 is run. If not,
replace the inverter PCB.

Check if CN12-1 and 12-2 on the main PCB go low when
maintenance item U061 is run. If not, replace the main PCB.

1-5-12

2BT

(3) Image is too

light.

Causes Check procedures/corrective measures

1. Insufficient toner.

2. Deteriorated developer.

3. Dirty or deteriorated drum.

(4) Background is visible.

Causes

1. Insufficient toner.

2. Deteriorated developer.

3. Dirty or deteriorated drum.

If the add toner indicator lights, replace the container.
Check the number of copies made with the current developer. If it

has reached the specified limit, replace the developer.
Clean the drum or, if the maintenance level has been reached,

replace the drum (see page 1-6-29).

Causes

1. Deteriorated developer.

Causes Check procedures/corrective measures

1. Deteriorated developer. Check the number of copies made with the current developer. If it
has reached the specified limit, replace the developer.

(5) A white line appears

longitudinally.

Causes

1. Dirty or flawed main charger wire.

2. Foreign matter in the developing section.

3. Flawed drum.

4. Dirty shading plate.

Causes Check procedures/corrective measures

1. Dirty or flawed main charger wire.

Clean the main charger wire or, if it is flawed, replace the main
charger unit.

2. Foreign matter in the developing section.

Check if the magnetic brush is formed uniformly. If not, replace the
developer.

3. Flawed drum.

4. Dirty shading plate.

Replace the drum (see page 1-6-29).
Clean the shading plate.

1-5-13

2BT

(6) A black line appears

longitudinally.

Causes

1. Dirty contact glass.

2. Dirty or flawed drum.

3. Deformed or worn cleaning blade.

4. Dirty scanner mirror.

Causes Check procedures/corrective measures

1. Dirty contact glass.

2. Dirty or flawed drum.

3. Deformed or worn cleaning blade.

4. Dirty scanner mirror.

(7) A black line ap-

pears laterally.

Causes

1. Flawed drum.

2. Dirty developing section.

3. Leaking main charger housing.

Clean the contact glass.
Clean the drum or, if it is flawed, replace it (see page 1-6-29).
Replace the cleaning blade (see page 1-6-31).
Clean the scanner mirror.

Causes Check procedures/corrective measures

1. Flawed drum.

2. Dirty developing section.

3. Leaking main charger housing.

(8) One side of the

copy image is
darker than the

Causes

1. Dirty main charger wire.

2. Defective exposure lamp.

other.

Causes Check procedures/corrective measures

1. Dirty main charger wire.

2. Defective exposure lamp.

Replace the drum (see page 1-6-29).
Clean any part contaminated with toner or carrier in the developing

section.
Clean the main charger wire, grid and shield.

Clean the wire or, if it is extremely dirty, replace the main charger
unit.

Check if the exposure lamp light is distributed evenly. If not, replace
the exposure lamp (see page 1-6-12).

1-5-14

2BT

(9) Black dots appear

on the image.

Causes

1. Dirty or flawed drum.

2. Dirty contact glass.

3. Deformed or worn cleaning blade.

Causes Check procedures/corrective measures

1. Dirty or flawed drum.

2. Dirty contact glass.

3. Deformed or worn cleaning blade.

(10)Image is blurred.

Causes

1. Scanner moves erratically.

2. Deformed press roller.

3. Paper conveying section drive problem.

Causes Check procedures/corrective measures

1. Scanner moves erratically.

2. Deformed press roller.

3. Paper conveying section drive problem.

Clean the drum or, if it is flawed, replace it (see page 1-6-29).
Clean the contact glass.
Replace the cleaning blade (see page 1-6-31).

Check if there is any foreign matter on the front and rear scanner
rails. If any, remove it.

Replace the press roller (see page 1-6-38).
Check the gears and belts and, if necessary, grease them.

(11)The leading edge of

the image is consist­ently misaligned with
the original.

Causes

1. Misadjusted leading edge registration.

2. Misadjusted scanner leading edge
registration.

Causes Check procedures/corrective measures

1. Misadjusted leading edge registration.

2. Misadjusted scanner leading edge
registration.

Readjust the leading edge registration (see pages 1-6-8).
Readjust the scanner leading edge registration (see page 1-6-24).

1-5-15

2BT

(12)The leading edge of

the image is sporadi­cally misaligned with
the original.

Causes

1. Registration clutch, bypass paper feed clutch
or paper feed clutch installed or operating
incorrectly.

Causes Check procedures/corrective measures

1. Registration clutch, bypass paper feed clutch
or paper feed clutch installed or operating
incorrectly.

(13)Paper creases. Causes

1. Paper curled.

2. Paper damp.

3. Defective pressure springs.

Check the installation position and operation of the registration
clutch, bypass paper feed clutch and paper feed clutches. If any of
them operates incorrectly, replace it.

Causes Check procedures/corrective measures

1. Paper curled. Check the paper storage conditions.

2. Paper damp. Check the paper storage conditions.

3. Defective pressure springs. Replace the pressure springs.

(14)Offset occurs.

Causes

1. Defective cleaning blade.

2. Defective pressure springs.

3. Incorrect fixing temperature.

Causes Check procedures/corrective measures

1. Defective cleaning blade. Replace the cleaning blade (see page 1-6-31).

2. Defective pressure springs. Replace the pressure springs.

3. Incorrect fixing temperature. Run maintenance item U161 and check the fixing temperature.

1-5-16

2BT

(15)Image is partly miss-

ing.

Causes

1. Paper damp.

2. Paper creased.

3. Drum condensation.

4. Flawed drum.

Causes Check procedures/corrective measures

1. Paper damp. Check the paper storage conditions.

2. Paper creased. Replace the paper.

3. Drum condensation. Clean the drum.

4. Flawed drum. Replace the drum (see page 1-6-29).

(16)Fixing is poor. Causes

1. Wrong paper.

2. Defective pressure springs.

3. Flawed press roller.

Causes Check procedures/corrective measures

1. Wrong paper. Check if the paper meets specifications.

2. Defective pressure springs. Replace the pressure springs.

3. Flawed press roller. Replace the press roller (see page 1-6-38).

(17)Image is out of

focus.

Causes

1. Defective image scanning unit.

Causes Check procedures/corrective measures

1. Defective image scanning unit. Replace the image scanning unit (see page 1-6-20).

1-5-17

2BT

(18)Image center does not

align with the original
center.

Causes

1. Misadjusted center line of image printing.

2. Misadjusted scanner center line.

3. Original placed incorrectly.

Causes Check procedures/corrective measures

1. Misadjusted center line of image printing. Readjust the center line of image printing (see pages 1-6-9).

2. Misadjusted scanner center line. Readjust the scanner center line (see page 1-6-25).

3. Original placed incorrectly. Place the original correctly.

(19)Image contrast is

low (carrier scatter-

Causes

1. No developing bias output.

ing).

Causes Check procedures/corrective measures

1. No developing bias output.

A. Developing bias wire makes poor contact.
B. The connector terminals of the high-voltage

transformer PCB make poor contact.

C. Defective main PCB.

D. Defective high-voltage transformer PCB.

Check the developing bias wire. If there are any problems, replace it.
Reinsert the connector. Also check for continuity within the

connector cable. If none, remedy or replace the cable.
Check if CN6-10 on the main PCB goes low when maintenance item

U030 is run. If not, replace the main PCB.
Check if developing bias is output when there is no problem with the

main PCB while maintenance item U030 is run. If not, replace the
high-voltage transformer PCB.

1-5-18

1-5-4 Electrical problems

Problem Causes Check procedures/corrective measures

(1)
The machine does
not operate when
the main switch is
turned on.

No electricity at the power
outlet.

The power cord is not
plugged in properly.

The front cover and/or
paper conveying cover
are/is not closed
completely.

Measure the input voltage.

Check the contact between the power plug and the outlet.

Check the front cover and paper conveying cover.

2BT

(2)
The drive motor
does not operate .

(3)
The scanner motor
does not operate.

Broken power cord.

Defective main switch.

Blown fuse in the power
source PCB.

Defective safety switch.

Defective power source
PCB.

Poor contact in the drive
motor connector terminals.

Broken drive motor gear.

Defective drive motor.

Broken scanner motor coil.

Poor contact in the
scanner motor connector
terminals.

Check for continuity. If none, replace the cord.

Check for continuity across the contacts. If none, replace the
main switch.

Check for continuity. If none, remove the cause of blowing and
replace the fuse.

Check for continuity across the contacts. If none, replace the
safety switch.

With AC present, check for 5 V DC at CN1-7 on the power
source PCB, 12 V DC at CN1-8 and 24 V DC at CN1-2. If none,
replace the power source PCB.

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

Check visually and replace the drive motor if necessary.

Run maintenance item U030 and check if the drive motor
operates when CN13-5 on the main PCB goes low. If not,
replace the drive motor.

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

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

(4)
The toner feed
motor does not
operate.

(5)
Cooling fan motor
does not operate.

(6)
The registration
clutch does not
operate.

Broken toner feed motor
coil.

Poor contact in the toner
feed motor connector
terminals.

Broken cooling fan motor
coil.

Poor contact in the cooling
fan motor connector
terminals.

Broken registration clutch
coil.

Poor contact in the
registration clutch
connector terminals.

Check for continuity across the coil. If none, replace the toner
feed motor.

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

Check for continuity across the coil. If none, replace cooling fan
motor.

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

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

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

1-5-19

2BT

Problem Causes Check procedures/corrective measures

(7)
The paper feed
clutch does not
operate.

Broken paper feed clutch
coil.

Poor contact in thepaper
feed clutch connector
terminals.

Check for continuity across the coil. If none, replace the paper
feed clutch.

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

(8)
The bypass paper
feed clutch does not
operate.

(9)
The cleaning lamp
does not turn on.

(10)
The exposure lamp
does not turn on.

(11)
The exposure lamp
does not turn off.

(12)
The fixing heater
does not turn on
(C610).

Broken bypass paper feed
clutch coil.

Poor contact in the bypass
paper feed clutch
connector terminals.

Poor contact in the
cleaning lamp connector
terminals.

Defective cleaning lamp.

Poor contact in the
exposure lamp connector
terminals.

Defective inverter PCB.

Defective inverter PCB.

Broken wire in fixing
heater.

Fixing unit thermostat
triggered.

Check for continuity across the coil. If none, replace the bypass
paper feed clutch.

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 for continuity. If none, replace the cleaning lamp.

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

If the exposure lamp does not turn on when CN12-1 and CN12-2
on the main PCB are held low, replace the inverter PCB.

If the exposure lamp does not turn off when CN12-1 and CN12-2
on the main PCB are held high, replace the inverter PCB.

Check for continuity across the heater. If none, replace the
heater.

Check for continuity across the thermostat. If none, remove the
cause and replace the thermostat.

(13)
The fixing heater
does not turn off.

(14)
Main charging is not
performed (C510).

Broken fixing unit
thermistor wire.

Dirty sensor part of the
fixing unit thermistor.

Broken main charger wire.

Leaking main charger
housing.

Poor contact in the high­voltage transformer PCB
connector terminals.

Defective main PCB.

Defective high- voltage
transformer PCB .

Measure the resistance. If it is ∞ Ω, replace the fixing unit
thermistor.

Check visually and clean the thermistor sensor parts.

See page 1-5-12.

1-5-20

Problem Causes Check procedures/corrective measures

(15)
Transfer charging is
not performed.

Poor contact in the high­voltage transformer PCB
connector terminals.

Defective main PCB.

Defective high-voltage
transformer PCB .

See page 1-5-12.

2BT

(16)
No developing bias
is output.

(17)
A paper jam in the
paper feed, paper
conveying or fixing
section is indicated
when the main
switch is turned on.

(18)
The message
requesting covers to
be closed is
displayed when the
front cover and
paper conveying
cover are closed.

Poor contact in the
developing bias wire.

Poor contact in the high­voltage transformer PCB
connector terminals.

Defective main PCB.

Defective high-voltage
transformer PCB .

A piece of paper torn from
copy paper is caught
around the registration
switch or eject switch.

Defective registration
switch.

Defective eject switch.

Poor contact in the
connector terminals of
safety switch.

Defective safety switch.

See page 1-5-18.

Check and remove if any.

With 5 V DC present at CN3-14 on the main PCB, check if CN3­3 on the main PCB remains low when the registration switch is
turned on and off. If it does, replace the registration switch.

With 5 V DC present at CN11-6 on the main PCB, check if
CN11-5 on the main PCB remains low when the eject switch is
turned on and off. If it does, replace the eject switch.

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 there is
no continuity when the switch is on, replace it.

(19)
Others.

Wiring is broken, shorted
or makes poor contact.

Noise.

Check for continuity. If none, repair.

Locate the source of noise and remove.

1-5-21

2BT

1-5-5 Mechanical problems

Problem Causes/check procedures Corrective measures

(1)
No primary paper feed.

Check if the surfaces of the following pulleys
are dirty with paper powder: paper feed
pulleys and bypass paper feed pulleys.

Clean with isopropyl alcohol.

(2)
No secondary paper
feed.

(3)
Skewed paper feed.

(4)
The scanner does not
travel.

(5)
Multiple sheets of paper
are fed at one time.

(6)
Paper jams.

Check if the paper feed pulleys are
deformed.

Electrical problem with the following
electromagnetic clutches: paper feed clutch
and bypass paper feed clutch.

Check if the surfaces of the left and right
registration rollers are dirty with paper
powder.

Electrical problem with the registration
clutch.

Deformed width guide in a drawer.

Check if a pressure spring along the paper
conveying path is deformed or out of place.

Check if the scanner wire is loose.

The scanner motor malfunctions.

Deformed drawer claw.

Check if the paper is curled.

Check if the paper is excessively curled.

Deformed guides along the paper conveying
path.

Check visually and replace any deformed
pulleys (see page 1-6-3).

See pages 1-5-20.

Clean with isopropyl alcohol.

See page 1-5-19.

Repair or replace if necessary .

Repair or replace.

Reinstall the scanner wire (see page 1-6-

14).

See page 1-5-19.

Check the drawer claw visually and correct
or replace if necessary.

Change the paper.

Change the paper.

Check visually and replace any deformed
guides.

(7)
Toner drops on the
paper conveying path.

(8)
Abnormal noise is
heard.

Check if the contact between the right and
left registration rollers is correct.

Check if the press roller is extremely dirty or
deformed.

Check if the contact between the heat roller
and its separation claws is correct.

Check if the developing section of the image
formation unit is extremely dirty.

Check if the pulleys, rollers and gears
operate smoothly.

Check if the following electromagnetic
clutches are installed correctly: paper feed
clutch and bypass paper feed clutch.

Check visually and remedy if necessary.
Replace the pressure spring if it is
deformed.

Clean or replace the press roller.

Repair if any springs are off the separation
claws.

Clean the developing section of the image
formation unit.

Grease the bearings and gears.

Correct.

1-5-22

1-6-1 Precautions for assembly and disassembly

(1) Precautions

• Be sure to turn the main switch off and disconnect the power plug before starting disassembly.

• When handling PCBs, do not touch connectors with bare hands or damage the board.

• Do not touch any PCB containing ICs with bare hands or any object prone to static charge.

• Use only the specified parts to replace the fixing unit thermostat. Never substitute electric wires, as the copier may be
seriously damaged.

• Do not perform aging without the waste toner tank installed during maintenance service.

• Use the following testers when measuring voltages:
Hioki 3200
Sanwa MD-180C
Sanwa YX-360TR
Beckman TECH300
Beckman DM45
Beckman 330*
Beckman 3030*
Beckman DM850*
Fluke 8060A*
Arlec DMM1050
Arlec YF1030C
* Capable of measuring RMS values.

• Prepare the following as test originals:

1. NTC (new test chart)

2. NPTC (newspaper test chart)

2BT

1-6-1

2BT

(2) Running a maintenance item

Press the stop/reset key, start key
and the left copy exposure adjustment
key in the order presented and hold
them down.

Start

Press the stop/reset key.

Enter the number of the maintenance
item to be executed using the copy
exposure adjustment keys or the zoom
+/- keys.

Press the start key.

The maintenance item is run.

Press the stop/reset key.

Yes

Run the item again?

· · · · · · · Entering the maintenance mode

· · · · · · · Selecting a maintenance item

1-6-2

No

Yes

Run another maintenance

mode?

No

Enter 001 using the copy exposure
adjustment keys or the zoom +/- keys,
and press the start key.

End

· · · · · · · Exiting the maintenance mode

1-6-2 Paper feed section

2BT

(1) Detaching and refitting the paper feed pulleys

Follow the procedure below to replace the paper feed pulleys.

Procedure

1. Remove the printer cover and rear cover. Pull

out the drawer.

2. Remove the four screws and then detach the

high-voltage transfer PCB.

3. Remove the stop ring and then the paper

feed clutch.

High-voltage transfer PCB

Figure 1-6-1

Stop ring

4. Remove the stop ring snd bushing from the

paper feed shaft unit.

Paper feed clutch

Figure 1-6-2

Stop ring

Bushing

Figure 1-6-3

1-6-3

2BT

5. Remove the paper feed shaft unit from the
lower front side of the machine.

6. Remove the screw holding each of the paper
feed pulleys and then the pulleys.

7. Replace the paper feed pulleys and refit all
the removed parts.

• Before returning the drawer, turn the main

switch on.

• When refitting the paper feed clutch, the

stopper of the paper feed clutch must be
firmly into the groove of the machine.

Paper feed shaft unit

Figure 1-6-4

Paper feed pulleys

1-6-4

Figure 1-6-5

(2) Detaching and refitting the bypass paper feed pulley

Follow the procedure below to replace the bypass paper feed pulley.

Procedure

1. Remove the printer cover, rear cover and left
cover.

2. Remove the image formation unit (see page
1-6-27).

3. Remove the fixing unit (see page 1-6-34).

4. Remove the screw and then the fulcrum pin.

2BT

Fulcrum pin

Figure 1-6-6

5. Remove the paper conveying unit.

6. Remove the three screws holding the bypass
cover and then the cover.

Paper conveying unit

Figure 1-6-7

Bypass cover

Figure 1-6-8

1-6-5

2BT

7. Remove the stop ring and then the bypass
paper feed clutch.

8. Remove the stop ring and bushing holding
the bypass paper feed shaft unit and then the
unit.

Stop ring

Bypass paper feed clutch

Figure 1-6-9

Bypass paper feed shaft unit

9. Remove the grounding plate, bushing and
stop ring and then the bypass paper feed
pulley.

Stop ring

Bushing

Figure 1-6-10

Stop ring

Bushing

1-6-6

Bypass paper feed pulley

Grounding plate

Figure 1-6-11

10. Replace the bypass paper feed pulley and
refit all the removed parts.

• Refit the bypass paper feed pulley so that

the one-way clutch is machine rear.

• When refitting the bypass paper feed shaft

unit, check that the hole in the grounding
plate is inserted over the projection under
the bypass lift plate.

• When refitting the paper feed clutch, the

stopper of the paper feed clutch must be
firmly into the groove of the machine.

2BT

Ground plate

Projection

Figure 1-6-12

1-6-7

2BT

(3) Adjustment after roller and clutch replacement

Perform the following adjustment after refitting rollers and clutches.

(3-1) Adjusting the leading edge registration of image printing

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

U034

U066

(P. 1-6-24)

Caution:

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

Procedure

Leading edge registration

Start

Enter maintenance mode.

Enter “034” using the copy exposure

adjustment keys or zoom +/- keys.

Press the start key.

Select the items to be adjusted using

the copy exposure adjustment keys.

Exp. 1 (lit): Leading edge registration
from the drawer
Exp. 3 (lit): Leading edge registration
from the bypass tray

Correct image Output

example 1

Figure 1-6-13

Output

example 2

Press the size select key and the

machine enters the test copy mode.

Press the start key

to output a test pattern.

Is the leading edge

registration correct?

Yes

Press the stop/reset key to exit

maintenance mode.

End

Press the start key

The new setting is stored

For output example 1, decrease
the value using the zoom (–)

No

key.
For output example 2, increase
the value using the zoom (+)
key.

Setting range: –9.9 – +9.9
Initial setting: 0
Changing the value by 1 moves the
leading edge by 1.0 mm.

1-6-8