Mita-Kyocera KM-4850W Service Manual

SERVICE

MANUAL

Published in Jun. ’01

842A7110

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.

CAUTION

Double-pole/neutral fusing.

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 Specification ......................................................................................................................................... 1-1-1

1-1-2 part names and functions ..................................................................................................................... 1-1-3

(1) Main unit ....................................................................................................................................... 1-1-3

(2) Operation panel ............................................................................................................................ 1-1-5

1-1-3 Copy process ....................................................................................................................................... 1-1-6

1-1-4 Machine cross sectional view ............................................................................................................... 1-1-7

1-1-5 Machine drive system .......................................................................................................................... 1-1-8

(1) Drive system 1 (driven by the paper feed motor) .......................................................................... 1-1-8

(2) Drive system 2 (driven by the drum motor and fixing motor) ...................................................... 1-1-10

(3) Drive system 3 (driven by the main motor and toner motor) ....................................................... 1-1-11

(4) Drive system 4 (driven by the original motor) ............................................................................. 1-1-11

1-2 Handling Precautions

1-2-1 Handling and storage of the drum ........................................................................................................ 1-2-1

1-2-2 Storage of developer and toner ............................................................................................................ 1-2-1

1-2-3 Handling of the heaters (for 120 V specifications only) ........................................................................ 1-2-1

1-2-4 Paper .................................................................................................................................................... 1-2-1

1-2-5 Installation environment ....................................................................................................................... 1-2-2

2A7

1-3 Installation

1-3-1 Unpacking and installing the copier ..................................................................................................... 1-3-1

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

1-3-2 Copy mode initial settings .................................................................................................................. 1-3-12

1-3-3 User Settings ...................................................................................................................................... 1-3-13

(1) Default settings making procedure ............................................................................................. 1-3-13

(2) Making default settings ............................................................................................................... 1-3-14

1-3-4 Installation of the upper roll unit (option) ............................................................................................ 1-3-17

1-3-5 Attaching the original tray ................................................................................................................... 1-3-23

1-3-6 Attaching the key counter (option) ..................................................................................................... 1-3-25

1-3-7 Installing expansion memory (DIMM, option) ..................................................................................... 1-3-26

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 .......................................................................................... 1-4-6

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 ............................................................................................................................. 1-5-7

1-5-2 Self-diagnostic function ...................................................................................................................... 1-5-11

(1) Self-diagnostic display ................................................................................................................ 1-5-11

(2) Self diagnostic codes .................................................................................................................. 1-5-12

1-5-3 Image formation problems ................................................................................................................. 1-5-17

(1) No image (entirely white). ........................................................................................................... 1-5-18

(2) Part or all of the image is solid black. ......................................................................................... 1-5-19

(3) Image is too light. ........................................................................................................................ 1-5-20

(4) Background is visible. ................................................................................................................. 1-5-20

(5) A white line appears longitudinally. ............................................................................................. 1-5-21

(6) A black line appears longitudinally. ............................................................................................. 1-5-21

(7) A black line appears laterally. ..................................................................................................... 1-5-22

(8) One side of the copy image is darker than the other. ................................................................. 1-5-22

1-1-1

2A7

(9) Black dots appear on the image. ................................................................................................ 1-5-23

(10) Image is blurred. ......................................................................................................................... 1-5-23

(11) The leading edge of the image is consistently misaligned with the original. ............................... 1-5-24

(12) The leading edge of the image is sporadically misaligned with the original. ............................... 1-5-24

(13) Paper creases. ............................................................................................................................ 1-5-24

(14) Offset occurs. .............................................................................................................................. 1-5-25

(15) Image is partly missing. .............................................................................................................. 1-5-25

(16) Fixing is poor. .............................................................................................................................. 1-5-25

(17) Image is out of focus. .................................................................................................................. 1-5-26

(18) The center of the image is misaligned with the original. ............................................................. 1-5-26

(19) One forth the A0 width of the image is white. ............................................................................. 1-5-27

(20) One forth the A0 width of the image is black. ............................................................................. 1-5-27

1-5-4 Electrical problems ............................................................................................................................. 1-5-28

(1) The machine does not operate at all when the main switch is turned on. .................................. 1-5-28

(2) The main motor does not operate. .............................................................................................. 1-5-28

(3) The drum motor does not operate. ............................................................................................. 1-5-28

(4) The fixing motor does not operate. ............................................................................................. 1-5-28

(5) The paper feed motor does not operate. .................................................................................... 1-5-28

(6) The original feed motor does not operate. .................................................................................. 1-5-29

(7) The toner feed motor does not operate. ..................................................................................... 1-5-29

(8) The paper conveying fan motor does not operate. ..................................................................... 1-5-29

(9) The fixing unit fan motor does not operate. ................................................................................ 1-5-29

(10) LPH fan motor does not operate. ................................................................................................ 1-5-29

(11) The upper roll winding clutch* does not operate. ........................................................................ 1-5-29

(12) The middle roll winding clutch does not operate. ........................................................................ 1-5-30

(13) The lower roll winding clutch does not operate. .......................................................................... 1-5-30

(14) The upper feed clutch* does not operate. ................................................................................... 1-5-30

(15) The middle feed clutch does not operate. ................................................................................... 1-5-30

(16) The lower feed clutch does not operate. ..................................................................................... 1-5-30

(17) The roll feed clutch does not operate. ......................................................................................... 1-5-30

(18) The roll registration clutch does not operate. .............................................................................. 1-5-31

(19) The bypass registration clutch does not operate. ....................................................................... 1-5-31

(20) The bypass feed clutch does not operate. .................................................................................. 1-5-31

(21) The right or left xenon lamp does not light. ................................................................................. 1-5-31

(22) The right or left xenon lamp does not go off. .............................................................................. 1-5-31

(23) The right, middle or left cleaning lamp does not light. ................................................................. 1-5-31

(24) The main fixing heater does not turn on. .................................................................................... 1-5-32

(25) The sub fixing heater does not turn on. ...................................................................................... 1-5-32

(26) The main fixing heater fails to turn off. ........................................................................................ 1-5-32

(27) The sub fixing heater fails to turn off. .......................................................................................... 1-5-32

(28) No main charging. ....................................................................................................................... 1-5-33

(29) No transfer charging. .................................................................................................................. 1-5-33

(30) No separation charging. .............................................................................................................. 1-5-33

(31) No developing bias voltage. ........................................................................................................ 1-5-33

(32) The scan stop key does not operate. .......................................................................................... 1-5-34

(33) The drum heater does not operate. ............................................................................................ 1-5-34

(34) The upper roll unit heater* does not operate. ............................................................................. 1-5-34

(35) The middle roll unit heater does not operate. ............................................................................. 1-5-34

(36) The lower roll unit heater does not operate. ............................................................................... 1-5-34

(37) The separation claw solenoid does not operate. ........................................................................ 1-5-34

1-5-5 Mechanical problems ......................................................................................................................... 1-5-35

(1) No primary paper feed. ............................................................................................................... 1-5-35

(2) No secondary paper feed. ........................................................................................................... 1-5-36

(3) No original conveying. ................................................................................................................. 1-5-36

(4) Original jam. ................................................................................................................................ 1-5-36

(5) Paper jam. ................................................................................................................................... 1-5-37

(6) Toner falls onto the paper conveying section. ............................................................................ 1-5-37

(7) Abnormal noise. .......................................................................................................................... 1-5-37

1-1-2

1-6 Assembly and Disassembly

1-6-1 Cautions during disassembly and assembly ........................................................................................ 1-6-1

(1) Caution .......................................................................................................................................... 1-6-1

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

1-6-2 Original feed and optical section .......................................................................................................... 1-6-3

(1) Attachment and removal of the contact image sensor .................................................................. 1-6-3

(2) Attachment and removal of the LED printhead ............................................................................. 1-6-5

(3) Adjustment of the image focus (LPH height adjustment) .............................................................. 1-6-7

(4) Adjusting scanning magnification .................................................................................................. 1-6-8

(5) Adjusting the scanner leading edge registration ........................................................................... 1-6-9

(6) Adjusting the optical axis (center line) ........................................................................................ 1-6-10

(7) Adjusting the image width in the main scanning direction .......................................................... 1-6-11

(8) Adjusting the exposure amount .................................................................................................. 1-6-12

(9) Adjusting the automatic exposure ............................................................................................... 1-6-13

1-6-3 Developing section ............................................................................................................................. 1-6-14

(1) Replacement of developer .......................................................................................................... 1-6-14

(2) Adjustment of the doctor blade: reference .................................................................................. 1-6-16

(3) Adjustment of position for magnetic brush: reference ................................................................. 1-6-17

1-6-4 Image formation section ..................................................................................................................... 1-6-18

(1) Replacing the drum ..................................................................................................................... 1-6-18

(2) Cleaning the drum: reference ..................................................................................................... 1-6-20

(3) Checking the drum surface potential .......................................................................................... 1-6-21

(4) Replacing the main charger wire ................................................................................................ 1-6-22

(5) Replacing the transfer/separation charger wire .......................................................................... 1-6-24

(6) Replacing the transfer wire ......................................................................................................... 1-6-26

1-6-5 Cleaning section ................................................................................................................................. 1-6-28

(1) Attachment and removal of the cleaning unit .............................................................................. 1-6-28

(2) Attachment and removal of the cleaning blade ........................................................................... 1-6-29

(3) Attachment and removal of the lower cleaning seal ................................................................... 1-6-30

(4) Attachment and removal of the cleaning fur brush ..................................................................... 1-6-31

(5) Attachment and removal of the separation claw ......................................................................... 1-6-32

1-6-6 Fixing section ..................................................................................................................................... 1-6-33

(1) Attachment and removal of the oil roller ..................................................................................... 1-6-33

(2) Attachment and removal of the main and sub fixing heaters ...................................................... 1-6-34

(3) Attachment and removal of the heat roller .................................................................................. 1-6-36

(4) Attachment and removal of the press roller ................................................................................ 1-6-37

(5) Attachment and removal of fixing unit thermistors 1 and 2 (for use with the heat roller) ............ 1-6-38

(6) Attachment and removal of the fixing unit thermostat ................................................................. 1-6-40

(7) Attachment and removal of fixing unit thermistors 3 and 4 (for use with the press roller) .......... 1-6-41

1-6-7 Paper feed section ............................................................................................................................. 1-6-42

(1) Attachment and removal of the cutter unit .................................................................................. 1-6-42

(2) Adjusting printing magnification .................................................................................................. 1-6-43

(3) Adjusting the print start timing ..................................................................................................... 1-6-44

(4) Adjusting the standard cut length ................................................................................................ 1-6-45

(5) Adjusting the synchronized cut length ........................................................................................ 1-6-46

(6) Adjusting the long copy cut length .............................................................................................. 1-6-47

(7) Adjusting the trailing edge margin ............................................................................................... 1-6-48

1-6-8 Paper feed section ............................................................................................................................. 1-6-49

(1) Attachment and removal of the ozone filter ................................................................................ 1-6-49

(2) Attachment and removal of the cooling filter ............................................................................... 1-6-49

2A7

1-7 Requirements on PCB Replacement

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

1-7-2 Replacing the IPU PCB ........................................................................................................................ 1-7-1

1-7-3 Replacing the scanner PCB ................................................................................................................. 1-7-2

1-7-4 Upgrading the version of the flash ROM firmware (engine main PCB, IPU PCB,

and scanner PCB) ................................................................................................................................ 1-7-3

1-7-5 Fixed variable resistor (VR) .................................................................................................................. 1-7-5

1-1-3

2A7

2-1 Mechanical construction

2-1-1 Mechanical construction of each section ............................................................................................. 2-1-1

(1) Paper feed and conveying section ................................................................................................ 2-1-1

(1-1) Bypass paper feed ............................................................................................................... 2-1-4

(1-2) Roll unit paper feed .............................................................................................................. 2-1-5

(2) Main charger section ..................................................................................................................... 2-1-6

(3) Exposure and original conveying section ...................................................................................... 2-1-9

(4) CIS and LPH section ................................................................................................................... 2-1-12

(5) Developing section ...................................................................................................................... 2-1-16

(6) Transfer/separation section ........................................................................................................ 2-1-20

(7) Cleaning section ......................................................................................................................... 2-1-23

(8) Static eliminator section .............................................................................................................. 2-1-24

(9) Fixing section .............................................................................................................................. 2-1-25

2-2 Electrical Parts Layout

2-2-1 Electric parts layout .............................................................................................................................. 2-2-1

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

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

(3) Motors ........................................................................................................................................... 2-2-4

(4) Clutches and heaters .................................................................................................................... 2-2-5

(5) Others ........................................................................................................................................... 2-2-6

2-3 Operation of the PCBs

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

2-3-2 Engine main PCB ................................................................................................................................. 2-3-4

2-3-3 IPU PCB ............................................................................................................................................. 2-3-10

2-3-4 Operation unit PCB ............................................................................................................................ 2-3-15

2-3-5 Scanner PCB ..................................................................................................................................... 2-3-18

2-3-6 Original motor PCB ............................................................................................................................ 2-3-22

2-3-7 Left (right) inverter PCB ..................................................................................................................... 2-3-25

2-4 Appendixes

Timing Chart No. 1 ......................................................................................................................................... 2-4-1

Timing Chart No. 2 ......................................................................................................................................... 2-4-2

Timing Chart No. 3 ......................................................................................................................................... 2-4-3

Timing Chart No. 4 ......................................................................................................................................... 2-4-4

Timing Chart No. 5 ......................................................................................................................................... 2-4-5

Timing Chart No. 6 ......................................................................................................................................... 2-4-6

Image adjustment procedure table ................................................................................................................. 2-4-7

Periodic maintenance procedure .................................................................................................................... 2-4-9

List of maintenance parts ............................................................................................................................. 2-4-11

General wiring diagram ................................................................................................................................ 2-4-12

Power source wiring diagram ....................................................................................................................... 2-4-13

1-1-4

2A7

1-1-1 Specification

Type ............................................... Console type

Copying method ............................. Dry indirect electrostatic photocopying

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

Original feed method ...................... Fixed platen

Paper.............................................. Plain paper: 64 – 80 g/m2 (fed from the roll unit or bypass table)

Special paper: Vellum, film (fed from the roll unit or bypass table)
Paper roll width: 210 – 920 mm/17" – 36"
Paper roll outer diameter: 180 mm/6
Paper roll inner diameter: 76 mm/3"

Original size ................................... Standard: A0 – A4R (64 – 80 g/m

36" × 48" – 8

1

/2" × 11" (64 – 80 g/m2)

Maximum: 920 (W) × 6,000 (L) mm (64 – 80 g/m

36" (W) × 237" (L) (64 – 80 g/m

Copy size ....................................... Standard: A0 – A4R (64 – 80 g/m

1

36" × 48" – 8

/2" × 11" (64 – 80 g/m2)

Maximum: 920 (W) × 6,000 (L) mm (64 – 80 g/m

36" (W) × 237" (L) (64 – 80 g/m
Effective image width: 920 mm/36"
Void area: Leading/trailing edge: 10 mm or less, right/left edge: 3 mm or less

Copying magnification ratios .......... Manual mode: 25 – 400% (at intervals of 1% or 0.1%)

Fixed ratios:

Metric:
1:1±0.5%, 1:4.000, 1:2.829, 1:2.000, 1:1.410, 1:0.706, 1:0.500, 1:0.352, 1:0.250
Inch:
1:1±0.5%, 1:4.000, 1:2.667, 1:2.588, 1:1.545, 1:1.500, 1:1.333, 1:1.294, 1:0.772,

1:0.750, 1:0.667, 1:0.647, 1:0.500, 1:0.386, 1:0.375, 1:0.250

Copying speed ............................... 4.8 m/minute

First copy time ................................ Within 18 seconds (A1 [36" × 14"] standard size copying)

Warm up time ................................. Within 10 minutes (room temperature 20°C/68°F, 65%RH)

Paper feed system ......................... Automatic feed from the roll unit and manual feed from the bypass table

Continuous copying........................ 1 – 99 copies

Photoconductor .............................. OPC (Drum diameter: 90 mm)

Charging system ............................ Scorotoron charging

Exposure system............................ Scanning exposure of moving original

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

Light source.................................... Xenon lamp

Developing system ......................... Dry (magnetic brush)

Developer: dual component (ferrite carrier and black toner: N26T)
Toner density control: Toner sensor

Toner replenishing: Supply from the bottle cartridge

Transfer system ............................. Single negative corona charging

Separation system ......................... Single AC corona charging

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

Heat source: Halogen heaters (main: 750 W, sub: 350 W)

Control temperature: 155°C/311°F (plain paper)

150°C/302°F (film)

185°C/365°F (Vellum)
Abnormal temperature increase-prevention device: Thermostat (140°C/284°F)
Fixing pressure: 49N

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

Cleaning system............................. Cleaning blade and cleaning far brush

Memory for storage of image ......... 128 MB as standard (1024 MB at the maximum)

Machine dimensions ...................... 1330 (W) × 704 (D) × 1205 (H) mm

3

/8" (W) × 251/8" (D) × 477/16" (H)

52

Weight ............................................Approx. 252 kg/554.4 lbs. (main unit only)

Installation dimensions ................... 1330 (W) × 774 (D) mm (1330 mm (H) × 1319 (D) with full options)

3

/8" (W) × 301/2" (D) (523/8" (H) × 5115/16 (D) with full options)

52

Functions........................................ AMS, zoom copy, preset R/E, XY zoom, sort, image shift, margin copy, border erase,

mirror copy, preview copy, repeat copy, interrupt, job reserve, program, energy saver,
auto shut-off, self-diagnosis

3

/4" or less

2

)

2

)

2

)

2

)

2

)

2

)

1-1-1

2A7

Power requirement ......................... 120 V AC, 60 Hz, 13 A

220 – 240 V AC, 50 Hz, 7 A

Rated power consumption ............. 1560 W (120 V specifications)

1620 W (220 – 240 V specifications)

Accessories .................................... Copy tray support plate, original loop guide, roll flange

Options ........................................... Roll unit, original tray, key counter, carrier sheet (A0, A1, A2, 36" × 48" and 24" × 36"),

printer/scanner controller, expansion memory (128 MB, 256 MB and 512 MB).

1-1-2

1-1-2 part names and functions

(1) Main unit

2A7

1 Original guides
2 Original cover
3 Original leading edge cover
4 Original loop guide
5 Operation panel
6 Eject cover
7 Ejection release levers
8 Main unit release levers
9 Original table
0 Original holders

Figure 1-1-1

! Bypass table
@ Bypass guide
# Front covers
$ Copy trays
% Copy tray support plates
^ Main switch
& Scanner counter
* Total counter
( Key counter* insert slot

* Optional

1-1-3

2A7

1-1-4

) Right cover
⁄ Toner replenishing slot
¤ Toner replenishing slot screw
‹ Contact glass
› Upper roll unit*
fi Middle roll unit
fl Lower roll unit
‡ Instruction handbook box

Figure 1-1-2

° Waste toner tank

· Paper transport knob
‚ Upper, middle and lower roll unit

heater switches

ΠRoll flange
„ Release levers
´ Roll flange guides

* Optional

(2) Operation panel

Inch

Metric

2A7

1 APS/AMS key
2 100% key
3 Preset R/E key
4 Message display
5 Original Image Type key
6 Auto Exp. key (indicator)
7 Media key
8 Paper Source key
9 Cut Size key
0 */Language key
! Editing key
@ Output Adj. key
# Program Recall key
$ Cursor keys
% OK key
^ Memory indicator
& Repeat Copy key (indicator)
* Add Job key (indicator)
( Sort/Group key (indicator)
) Interrupt key (indicator)
⁄ Preview Copy key (indicator)
¤ Energy Saver key (indicator)
‹ Start key
› Reset key
fi Stop/Clear key
fl Light/Dark indicators
‡ Copy contrast indicators

° Copy contrast keys

· Scan indicator
‚ Copier/Printer/Scanner key (indicator)
ΠNumeric keys
„ Roll Cut key
´ Scan Stop key

Figure 1-1-3

1-1-5

2A7

1-1-3 Copy process

Original

Exposure Original image reading

Original image data read by the
CIS is A/D converted and

Xenon lamp

CIS

image-processed, and the LPH
LEDs light to form a static latent
image on the drum surface.

Developing

Paper

Static latent

LPH

image formation

Toner

Drum

Transfer Separation

Figure 1-1-4 Copy process

Main charging

Fixing

1-1-6

1-1-4 Machine cross sectional view

2A7

*

Original conveying path

Paper conveying path

Figure 1-1-5 Machine cross sectional view

1 Original conveying section
2 Optical section
3 Developing section
4 Image formation section

* The upper roll unit is optional.

5 Cleaning section
6 Fixing section
7 Paper feed/conveying section

1-1-7

2A7

1-1-5 Machine drive system

(1) Drive system 1 (driven by the paper feed motor)

1 Paper feed motor gear
2 Gear 82/35
3 Idle pulley 25/45
4 Pulse plate gear
5 Paper feed section drive belt
6 Drive tension pulley
7 Flange pulley 36
8 Pre-transfer drive pulley 32

9 Feed gear 47
10 Idle gear 30
11 Roll feed clutch
12 Idle gear 30
13 Idle gear 30
14 Roll registration clutch
15 Cartridge drive idle gear
16 Feed gear 40

1-1-8

Figure 1-1-6

17 Bypass feed clutch
18 Bypass registration clutch
19 Pre-transfer drive pulley 32
20 Flange pulley 36
21 Cleaning section drive belt*
22 Drive tension pulley*
23 Idle pulley 32/36*
24 Idle gear 30*
25 Upper roll winding clutch*
26 Roll drive gear 16*
27 Roll drive gear 40*
28 Roll drive gear 26*
29 Roll drive gear 26*
30 Developer spiral roller gear 23*
31 Cleaning section drive gear 25*
32 Roll unit pulley*

33 Roll unit belt*
34 Drum tension pulley*
35 Idle pulley 21*
36 Roll unit pulley*
37 Idle gear 40*
38 Roll flange*
39 Flange pulley 36
40 Pre-transfer drive pulley 32
41 Idle gear 30
42 Upper feed clutch*
43 Developer gear 20
44 Idle gear 30
45 Duplex gear 32
46 Idle gear 25
47 Idle gear 25
48 Drive gear 20T

2A7

49 Pre-transfer drive pulley 32
50 Flange pulley 36
51 Roll winding drive belt
52 Drive tension pulley
53 Idle pulley 32/36
54 Idle gear 30
55 Middle roll winding clutch
56 Roll drive gear 16
57 Roll drive gear 40
58 Roll drive gear 26
59 Roll drive gear 26
60 Developer spiral roller gear 23
61 Cleaning section drive gear 25
62 Roll unit pulley
63 Roll unit belt
64 Drum tension pulley
65 Idle pulley 21
66 Roll unit pulley
67 Idle gear 40
68 Roll flange
69 Flange pulley 36
70 Pre-transfer drive pulley 32
71 Idle gear 30
72 Middle feed clutch
73 Developer gear 20
74 Idle gear 30
75 Duplex gear 32
76 Idle gear 25
77 Idle gear 25
78 Drive gear 20T
79 Pre-transfer drive pulley 32

80 Flange pulley 36
81 Roll winding drive belt
82 Drive tension pulley
83 Idle pulley 32/36
84 Idle gear 30
85 Lower roll winding clutch
86 Roll drive gear 16
87 Roll drive gear 40
88 Roll drive gear 26
89 Roll drive gear 26
90 Developer spiral roller gear 23
91 Cleaning section drive gear 25
92 Roll unit pulley
93 Roll unit belt
94 Drum tension pulley
95 Idle pulley 21
96 Roll unit pulley
97 Idle gear 40
98 Roll flange

99 Flange pulley 36
100 Pre-transfer drive pulley 32
101 Idle gear 30
102 Lower feed clutch
103 Developer gear 20
104 Idle gear 30
105 Duplex gear 32
106 Idle gear 25
107 Idle gear 25
108 Drive gear 20T

* 21 to 39 and 42 are present when the upper roll unit (optional) is installed.

1-1-9

2A7

(2) Drive system 2 (driven by the drum motor and fixing motor)

1 Drum motor gear 40
2 Drum drive pulley 17
3 Drum drive gear 40
4 Drum drive belt
5 Cleaning section drive pulley 36/22
6 Idle pulley 32
7 Drum drive pulley 40
8 Developing unit drive pulley 30
9 Developing unit drive belt
0 Idle pulley 32
! Main pulley 24/32
@ Drive tension pulley
# Pre-transfer drive belt
$ Transfer pulley 32
% Transfer gear 30
^ Pre-transfer drive pulley 32

Figure 1-1-7

& Transfer drive gear 32
* Drive tension pulley
( Cleaning section drive belt
) Fixing motor gear
⁄ Idle gear 21/72
¤ Idle gear 21/63
‹ Drum drive gear 40
› Gear 35
fi Eject idle gear 20
fl Idle gear 24
‡ Heat roller gear 42

° Idle gear 20

· Oil roller gear 16
‚ Idle gear 20
ΠEject idle gear 20
„ Eject roller gear 17

1-1-10

(3) Drive system 3 (driven by the main motor and toner motor)

2A7

1 Pre-transfer drive gear 22
2 Pre-transfer gear 30
3 Idle gear 20
4 Idle gear 20
5 Idle gear 20
6 Post-developing gear 25
7 Gear 18
8 Gear 17
9 Drum joint
0 Drum flange
! Roller mix gear
@ Registration gear 31
# Developer paddle gear
$ Developer roller gear
% Developing unit drive gear 25
^ Toner gear 34
& Toner motor gear 20

Figure 1-1-8

(4) Drive system 4 (driven by the original motor)

Figure 1-1-9

1 Original motor pulley
2 Original feed drive belt
3 Original feed pulley 40
4 Tension pulley 20
5 Original feed pulley 40
6 Original feed pulley 40
7 Eject pulley 26
8 Eject pulley 26
9 Original cover belt

1-1-11

2A7

1-2-1 Handling and storage of the drum

Use the following caution when handling the drum.

• When removing the drum from the main unit, make sure not to expose it to direct sunshine or strong lighting.

• Store the drum where the ambient temperature is kept between –20°C/–4°F and 40°C/104°F and humidity not higher than
85% RH. Sudden changes in temperature and humidity even within the permitted ranges should be avoided, too.

• Avoid atmosphere laden with substances that might chemically damage the drum surface.

• Never touch the drum surface with any object. Protect it from bare or gloved hands; if it is accidentally touched, or stained
with oil, clean it.

1-2-2 Storage of developer and toner

Store developer and toner in a cool, dark place free from direct sunlight or high humidity.

1-2-3 Handling of the heaters (for 120 V specifications only)

This copier is equipped with heaters to avoid condensation inside. These heaters can be individually turned on or off with a
switch. If plain paper or film is kept in the roll units and there is a risk of high humidity, keep their heaters on.

1-2-4 Paper

1. Acceptable paper

• From the upper roll unit*, middle roll unit and lower roll unit
Roll of plain paper (64 – 80 g/m
and inner diameter of 76 mm.

• From the bypass table
Sheet of plain paper (64 – 80 g/m
and length of 297 – 6000 mm.
Other types of paper than the above or stapled sheets of paper cannot be used. If paper is creased, folded or torn, cut
off that part before using.
* Optional

2. Storage of paper
Paper should be stored in a cool, dark place free from direct sunlight, high temperature or humidity. If it is not going to
be used for a long time, take paper out of the roll unit, put it in the original wrapping paper and seal. Vellum must be kept
in a sealed vinyl bag.

2

), vellum and film with a width of 210 – 920 mm, outer diameter of 180 mm maximum

2

), vellum and film of A0 – A4R size (36" × 48" – 81/2 × 11") or width of 210 – 920 mm

1-2-1

2A7

1-2-5 Installation environment

1. Temperature: 10°C – 35°C/50°F – 95°F

2. Humidity: 15% – 85% RH

3. Power source: 120 V AC, 13 A/220 – 240 V AC, 7 A

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

5. Installation location

• Avoid locations with direct sunlight or bright areas such as near windows or with strong lighting. Be sure to avoid letting
direct sunlight or strong light reach the photoconductor when removing jammed paper.

• Avoid locations with high temperature or humidity, low temperature or humidity, and areas with sudden changes in
temperature. Also avoid areas with hot or cold draughts.

• Avoid areas with excessive dust or vibration.

• Be sure that the platform or floor area can support the weight of the equipment.

• Locate on a flat, horizontal surface (maximum inclination of 0.3°).

• Avoid atmosphere laden with substances that might chemically damage the equipment or the photoconductor
(mercury, alkali or acid vapors, inorganic gases, gases such as NOx and SOx, and chlorine-based organic solvents).

• Choose a location with adequate ventilation.

6. There should be sufficient space for operation and maintenance of the equipment:
800 mm/31

1

/2" at front, 500 mm/1911/16" at right and 300 mm/1113/16" at rear and left.

A

B

C

D

A: 1555 mm/631/2"

3

B: 1205 mm/49
C: 1688 mm/68
D: 1073 mm/43

7

13

/16"
/8"

/16"

Figure 1-2-1 Installation measurements

1-2-2

1-3-1 Unpacking and installing the copier

(1) Installation procedure

Start

Unpack the copier.

Remove the retaining tapes. Attach the copy trays and copy tray support plates.

2A7

Attach the cleaning unit.

Set fixing pressure.

Attach the main unit support assemblies.

Adjust the horizontal level of the copier.

Adjust the position of the front covers.

Attach the safety switch actuators.

Set the developer.

Make the initial developer setting

(maintenance item U130).

Add toner.

Coat the cleaning blade with toner

(maintenance item U160).

Attach the original loop guide.

Make a test copy.

End

1-3-1

2A7

Unpack the copier.

1 Machine body
2 Copy trays
3 Roll flange
4 Main unit support assemblies
5 Copy tray support plates
6 Original loop guide
7 Hinge joints
8 M4 × 08 TP-A chrome screws
9 Top pad
0 Bottom pad
! Outer case

Figure 1-3-1 Copier package

@ Top case
# Top board
$ Props
% Skid
^ Dust cover
& Accessory case
* Pad sheet
( Air cap bag
) Air cap bag
⁄ Original cover spacers
¤ Air cap bag

‹ Air cap bag
› Barcode label
fi Vinyl bag
fl Polyethylene bag
‡ Instruction handbook

° Polyethylene bag

· Power cord (230/240 V)
‚ Safety switch actuators
ΠStopper labels
„ BVM3 × 05 cross-head

bronze binding screws

1-3-2

Remove the retaining tapes.

1. Remove the tape retaining the air cap bag.

2. Remove the two tapes retaining the power cord
and then the tape binding the cord. (For 120 V
specifications only)

3. Remove the retaining tape from each main unit
release lever.

4. Remove the four tapes retaining the front covers.

5. Remove the tape retaining the waste toner tank
cover.

2A7

Power cord

Air cap bag

Main unit
release lever

6. Remove the two tapes retaining the original
guide.

7. Pull the main unit release levers and open the
detachable unit.

8. Remove the two tapes retaining the original
cover.

9. Open the original cover and remove the pad.

10. Remove the two spacers from the original cover.

11. Remove the two tapes retaining the original
leading edge cover.

12. Close the detachable unit.

13. Open the front covers and remove the two tapes
from each magnet.

14. Pull out the middle roll unit and remove the tape
retaining the air cap bag with the original loop
guide inside.

15. Pull out the lower roll unit and remove the tape
retaining the air cap bag with the roll flange
inside.

16. Close the front covers.

Original cover spacer

Original guides

Magnets

Figure 1-3-2

Original leading edge coverOriginal cover

Original cover spacer

Magnets

Air cap bags

Figure 1-3-3

1-3-3

2A7

Attach the cleaning unit.

1. Pull the main unit release levers and open the
detachable unit.

2. Remove the screw from each of the right and left
cleaning unit retention stoppers.

3. Slide the right and left cleaning unit retention
stoppers inward and release the cleaning unit.

4. Move the right and left cleaning unit
retention stays from hole A to hole B on
each of the right and left side plates.
* When retaining the cleaning unit, take

care that your fingers are not caught by
the left and right cleaning unit retention
stoppers.

5. Connect the 9-pin connector to the
cleaning unit.

Screw

Cleaning unit
retention stoppers

Screw

Figure 1-3-4

B

B

A

Cleaning unit

A

Cleaning unit
retention stay

6. Secure the right and left cleaning unit
retention stoppers using one screw
removed in step 2 for each stopper.

9-pin connector

Figure 1-3-5

Screw

Cleaning unit retention sttopers

Screw

Figure 1-3-6

1-3-4

Set fixing pressure.

1. Set fixing pressure by rotating the fixing pressure
adjustment nuts at the front and rear of the fixing unit
clockwise until they are tight.

2A7

Fixing pressure adjustment nut

Fixing pressure
adjustment nut

2. Push in the main unit release levers until closing the
detachable unit.

Attach the main unit support assemblies.

1. Open the front covers.

2. Remove the screw retaining the main unit
support assembly cover.

3. Attach the main unit support assembly to
the lower right of the main unit using the
four M4 × 08 TP-A chrome screws.

4. Attach the main unit support assembly to
the lower left of the main unit in the same
way.

5. Rotate the nuts of the main unit support
assemblies and adjust the horizontal
level.
* Adjust the level with the casters of the

main unit off the floor.

M4 × 08 TP-A
chrome screws

Main unit support assembly

Figure 1-3-7

Screw

Cover

Stopper
label

M4 × 08 TP-A
chrome screws

Figure 1-3-8

1-3-5

2A7

Adjust the horizontal level of the unit.

1. Place three levels on the center, right and left of the contact glass and check that the unit is level in all directions.

2. After any leveling adjustments, reattach the main unit support assembly covers using one screw for each cover.

3. Attach the stopper labels to the covers of the right and left main unit support assemblies.

Adjusting the position of the front covers.

1. Open and close the front covers and check that
there are no problems.

2. In case of trouble, loosen the two screws on each of
the top and bottom hinges, adjust the front cover
position and then retighten the screws.

Attach the safety switch actuators.

Front cover

Top hinge

Figure 1-3-9

Screws

Screws

Bottom
hinge

1. Temporarily set the safety switch actuator onto the left
and right front covers using a BVM3 × 05 cross-head
bronze binding screw for each.

2. Adjust the positions of the safety switch actuators so
that the switches are turned on upon closing the front
covers, and then tighten the screws.

BVM3 × 05 cross-head
bronze binding screw

Safety switch
actuator

Front cover

Figure 1-3-10

1-3-6

Attach the copy trays and copy tray support plates.

1. Attach the copy tray support plates to the front covers
with the projections on the copy tray support plates
fitting into the grooves on the front covers.

2A7

Groove

Projection

Copy tray support plates

Figure 1-3-11

2. Attach the copy trays to the front covers using the two
hinge joints for each tray.

Copy tray

Front cover

Hinge joints

Figure 1-3-12

1-3-7

2A7

Set the developer.

1. Open the toner replenishing slot.

2. Remove the screw, the connector protec­tive cover and then the 5-pin connector.
* Always turn the main switch off before

removing and connecting the 5-pin
connector.

3. Remove the five screws and then the

5-pin connector

upper rear cover.

4. Remove the two blue screws, the right and left
connectors and then the developing unit.

Screw

Connector
protective cover

Developing unit

Figure 1-3-13

Blue screw

Screws

Toner
replenishing
slot

Upper
rear
cover

Screws

5. Remove the two pins and 2-pin connector and then the
toner hopper unit.

Blue screw

8-pin connector

1-pin connector

Figure 1-3-14

Pins

Toner hopper unit

1-3-8

2-pin connector

Figure 1-3-15

2A7

6. Align the developing unit with the guide and
insert into the main unit.

7. Lower the developing unit securing lever until it

Guide

locks, and connect the right and left connectors.

8-pin
connector

8. Shake the bottle of the developer well to mix the
developer.

9. Connect the power cord to the wall outlet.

10. Turn the main switch on and enter “10871087” using the
numeric keys to enter the maintenance mode.

11. Enter “030” using the numeric keys and press the start
key.

12. Select “Main/Drum motor” using the cursor up/down
keys and press the start key.
* The machine drive starts.

13. Pour two bottles of developer into the developing unit
being careful to spread the developer evenly across the
unit.

Developing unit
securing lever

Developing unit
securing lever

Developing
unit

Figure 1-3-16

Guide

1-pin
connector

Developer

14. After pouring the developer, press the stop/clear key.
* The machine drive stops.

15. Turn the main switch off.

16. Remove the right and left connectors from the
developing unit.

17. Raise the developing unit securing lever. Release the
developing unit and remove from the main unit.

18. Attach the toner hopper unit to the developing unit using
the two screws and connect the 2-pin connector.

19. Reattach the upper rear cover.

20. Connect the 5-pin connector and attach the connector
protective cover.

Figure 1-3-17

1-3-9

2A7

Make the initial developer setting (maintenance item U130).

1. Pull the main unit release levers. Turn the main switch on while the detachable unit is open and enter “10871087”
to enter the maintenance mode.

2. Push in the main unit release levers until closing the detachable unit.

3. Enter “130” using the numeric keys and press the start key.

4. Press the start key.
* Unit drive will stop in 3 minutes. The toner sensor output and the toner control voltage reference will be displayed.
Example:
Toner C: 95
Target: 118
Confirm: 118
Setting range: 105 to 135 (reference)

5. Press the stop/clear key.

Add toner.

1. Shake the bottle of toner well to mix toner.

2. Uncap the toner bottle. Open the toner replenishing slot
and place the bottle over the cartridge slot. Then, turn
the bottle in the direction in the arrow.

3. Make sure that all of toner has been poured out of the
bottle and then pull the bottle away from the machine.

4. Close the toner replenishing slot.

Figure 1-3-18

Toner bottle

Toner replenishing slot

Figure 1-3-19

1-3-10

Coat the cleaning blade with toner (maintenance item U160).

1. Enter “160” using the numeric keys and press the start
key.

2. Select “Action” using the cursor up/down keys and press
the start key.

3. Pull the main unit release levers to open the detachable
unit. Loosen the screw retaining the cleaning blade
retention stopper, slide the stopper to the left and then
retighten the screw.

4. Push in the main unit release levers until closing the
detachable unit.
* The cleaning blade will be coated with toner.

5. After the machine drive stops, press the stop/clear key.
Enter “001” using the numeric keys and press the start
key to exit the maintenance mode.

Attach the original loop guide.

2A7

Screw

Cleaning blade retention stopper

Figure 1-3-20

1. Attach the original loop guide to the upper rear cover
being careful to fit the two pins on the cover into the
grooves of the guide.

Make a test copy.

1. Load paper and make a test copy.

Groove

Original loop guide

Pin

Figure 1-3-21

The copier is now installed.

1-3-11

2A7

1-3-2 Copy mode initial settings

The factory settings for this machine are as shown below.

Maintenance

item No.

U256
U258
U267
U269
U271

U273

U344

User settings

Contents Setting at factory

Auto Preheat Time
Switching copy operation at toner empty detection
Adjusting the cutting length for the paper leading edge
Selecting the timing for total counting
Setting the unit of counting

Setting the maximum paper length

Setting the preheat (energy saving) mode

Auto Clear Time
Auto Shut-off Time
Copy size adjustment
Fusing temperature

Custom paper adj.
Standard size set
Auto roll over
Management #

ON
Single
Select temperature
Paper feeding
Total count: 1.0
Key counter: 0.1
Paper length Ltd.: 6000
Returnable Len. L: 1400
Energy save

1 min
OFF

0.0%
Bond: 155°C
Vellum: 185°C
Film: 150°C
Custom: 165°C
Vellum
A sizes/Architecture
OFF
4850

1-3-12

2A7

1-3-3 User Settings

The user can make default settings that determines how the copier acts when the main switch is turned on or after the reset
key is pressed. Default settings are categorized as “Machine default” that determine the copier’s basic operations and
“Copy default” which determine operability. Default settings are also divided into “user” and “manager” defaults, this former
being available to all users while this latter is restricted to only certain users. To make “manager defaults”, you need to input
a management No.

(1) Default settings making procedure

Start

Press the */Language key.

Select “Default setting/
user” using the cursor
up/down keys.

Press the OK key.

Select “Machine default”
using the cursor up/down
keys.

. . . . .

Set the default setting mode.

Select “Default set/manager”
using the cursor up/down
keys.

Press the OK key.

Enter management
No. (default: 4850) using
the numeric keys.

Select “Copy default” using
the cursor up/down keys.

Press the OK key.

Select item using the cursor
up/down keys.

Press the OK key.

Make the default setting.

Press the */Language key.

End

Press the OK key.

. . . . .

Exits the default setting mode.

1-3-13

2A7

(2) Making default settings

Machine default

Items common to user/manager

Paper width adjustment

1. Select a paper source and press the OK key.

2. Select between “Auto” and “Input width”, and
press the OK key.

3. If having selected “Input width”, input the width
using the numeric keys and press the OK key.

Setting range: 210 to 920 mm (8.5" to 36.2")

Paper working

1. Select between “ON” and “OFF”, and press the
OK key.

Paper material adjustment

First turn “ON” Paper working.

1. Select a paper source and press the OK key.

2. Select a paper type and press the OK key.

Paper type: Bond, Vellum, Film, Custom

Items for managers only

Auto Clear Timer [Auto clear]

1. Select between “ON” and “OFF”, and press the
OK key.

Auto Shut-off Time [Auto shut off]

1. Select between “Shut off mode” and “OFF”, and
press the OK key.

Timer Set

First turn “ON” Auto Clear Timer and set Auto
Shut-off Time to “Shut off mode”.

Auto Clear Time

1. Select “Auto Clear Time” and press the OK key.

2. Select a time and press the OK key.

Setting range: 30 s, 1 min, 3 min, 5 min

Auto Preheat Time

1. Select “Auto Preheat Time” and press the OK
key.

2. Select a time and press the OK key.

Setting range: Any 5 min mark between 5 and
45 min
Set Auto Preheat Time shorter than Auto Shut-off
Time.

Auto Shut-off Time

1. Select “Auto Shut-off Timer” and press the OK
key.

2. Select a time and press the OK key.

Setting range: Any 5 min mark between 15 and
120 min

Copy size adjustment

1. Select a paper type and press the OK key.

Paper type: Bond, Vellum, Film, Custom

2. Change the size and press the OK key.

Setting range: –3.0 to +3.0%

Roll end adjustment

1. Select a paper type and press the OK key.

2. Select between “Fix” and “Unfix”, and press the
OK key.

Display contrast

1. Select a contrast level and press the OK key.

Setting range: 1 to 7

Orig. eject direct

1. Select between “Discharge to back” and
“Discharge to front”, and press the OK key.

Fusing temperature [Set fixing temp.]

1. Select a paper type and press the OK key.

Paper type: Bond, Vellum, Film, Custom

2. Select a temperature and press the OK key.

Bond: 145°C, 155°C, 165°C
Vellum: 165°C, 175°C, 185°C
Film: 150°C, 160°C, 170°C
Custom: Select a temperature based on settings in
Custom paper adj.

Custom paper adj. [Custom paper material adj.]

1. Select “Custom” as the paper type and press
the OK key.

2. Select a fixing temperature and press the OK
key.

3. Adjust magnification and press the OK key.

Standard size set

1. Select between “A sizes (Architecture)” and “B
sizes (Engineer)”, and press the OK key.

Auto roll over

1. Select between “ON” and “OFF”, and press the
OK key.

Management # [Management code change]

1. Enter a new 4-digit management No. using the
numeric keys and press the OK key.

If you press the stop/clear key before the OK key,
the management No. reverts back to the default
(4850).

1-3-14

Copy default

Items common to user/manager

2A7

Auto rotation mode

1. Select between “ON” and “OFF”, and press the
OK key.

Zoom step [Zoom steps]

1. Select between “1%” and “0.1%”, and press the
OK key.

Zoom register

1. Select a user No. and press the OK key.

2. Select between “Zoom” and “XY Zoom”, and
press the OK key.

3. Set the magnification.

Zoom
Enter the zoom ratio using the cursor left/right keys
and the numeric keys, and press the OK key.

XY Zoom
Select a direction using the cursor up/down/left/
right keys, enter the zoom ratio using the cursor
up/down/left/right keys and the numeric keys, and
press the OK key.

Cut size register

1. Select between “User-1” and “User-2”, and
press the OK key.

2. Enter the cut size using the numeric keys and
press the OK key.

Setting range: 297 to 6000 mm (8.5 to 197")

Exposure step [Exposure steps]

1. Select between “7 steps” and “13 steps”, and
press the OK key.

Auto/Manual exp.

1. Select an original mode and press the OK key.

Original mode: Auto, Normal, Normal darker,
Normal lighter/Text/Line/Photo

Default exposure

First set Auto/Manual exp. to the setting other than
“Auto”.

1. Select an exposure level and press the OK key.

Setting range: 1 to 7

Exposure adj.

1. Select an original mode and press the OK key.

Original mode: Auto exposure, Normal originals,
Character/Line, Photo

2. Select an exposure level and press the OK key.

Setting range: 1 to 7

Items for manager only

Standard drawer

1. Select a paper source and press the OK key.
Paper source: 1st paper drawer*, 2nd paper
drawer, 3rd paper drawer, Bypass
* Optional

Auto select set

1. Select a copy mode and press the OK key.
Copy mode: APS, AMS, Manual

AMS mode

1. Select between “ON” and “OFF”, and press the

OK key.

Method copy start

1. Select between “Auto start” and “Start key”, and

press the OK key.

Start late time

1. Select a time and press the OK key.
Setting range: 0.5 s, 1 s, 2 s, 3 s, 4 s, 5 s

Paper cut [Select cut. Method]

1. Select a cutting mode and press the OK key.
Setting range
When “A sizes” (metric) is set: Synchronized cut,
1189 mm, 841 mm, 594 mm, 420 mm, 297 mm,
User-1, User-2
When “B sizes” (metric) is set: Synchronized cut,
1030 mm, 728 mm, 515 mm, 364 mm, User-1,
User-2
When “Architecture” (inch) is set: Synchronized
cut, 9.0", 12.0", 18.0", 22.0", 34.0", User-1, User-2
When “Engineer” (inch) is set: Synchronized cut,

8.5", 11.0", 17.0", 24.0", 36.0", User-1, User-2

Sync. Cut length

1. Select between “ON” and “OFF”, and press the

OK key.

Delete memory

1. Select between “Delete” and “Check data of

repeat copy”, and press the OK key.

Permit repeat

1. Select a mode and press the OK key.
Setting range: Permit, Code number, Unpermit

1-3-15

2A7

Change repeat # [Repeat code change]

First set Permit repeat to “Code number”.

1. Enter a new 4-digit code No. using the numeric
keys and press the OK key.

If you press the stop/clear key before the OK key,
the code No. reverts back to the default (4850).

Memory compress

1. Select a compression mode and press the OK
key.

Setting range: Non-compression, Standard-com­pression, High-compression

Maximum Jobs

1. Select a max. number of jobs and press the OK
key.

Setting range: 5 Jobs, 10 Jobs, 20 jobs

Default of edit function

Image shift up/down

1. Select “Image shift up/down” and press the OK
key.

2. Switch between the up and down direction
using the cursor up/down keys.

3. Enter a shift range using the numeric keys and
press the OK key.

Setting range 1 to 200 mm (0.1 to 8.0")

Image shift L/R

1. Select “Image shift up L/R” and press the OK
key.

2. Switch between the left and right direction using
the cursor left/right keys.

3. Enter a shift range using the numeric keys and
press the OK key.

Setting range 1 to 200 mm (0.1 to 8.0")

Leading edge

1. Select “Leading edge” and press the OK key.

2. Switch between “+” and “–” using the cursor up/
down keys, enter a size using the numeric keys
and press the OK key.

Setting range –1 to –200 mm (–0.1 to –8.0"), +1 to
+200 mm (+0.1 to +8.0")

Trailing edge

1. Select “Trailing edge” and press the OK key.

2. Switch between “+” and “–” using the cursor up/
down keys, enter a size using the numeric keys
and press the OK key.

Setting range –1 to –200 mm (–0.1 to –8.0"), +1 to
+200 mm (+0.1 to +8.0")

Border erase

1. Select “Border erase” and press the OK key.

2. Enter a size using the numeric keys and press
the OK key.

Setting range 0 to 200 mm (0.1 to 8.0")

Adj. Preview copy

1. Select between “Preview contrast” and
“Preview image”, and press the OK key.

1-3-16

1-3-4 Installation of the upper roll unit (option)

Procedure

1. Open the front covers and lift up the right and
left front cover stoppers to remove them from
the front covers.

2. Slide the right and left front cover stoppers to
remove them from the main body of the
machine.

3. Lift up the front covers to remove them.

2A7

Front cover
stopper

Front
covers

Figure 1-3-22

4. Pull the main unit release levers to open the
detachable unit and remove the six screws to
remove the left rear cover.

Screws

Front cover stopper

Figure 1-3-23

Screw

Left
rear
cover

Screw

Figure 1-3-24

Detachable
unit

Main unit
release lever

1-3-17

2A7

5. Remove the five screws to remove the left side
cover.

6. Close the detachable unit.

Screw

Detachable
unit

Left side
cover

7. Remove the two screws to remove the roll
drive cover.

Screws

Screws

Figure 1-3-25

Screws

Roll drive
cover

8. Fit the upper winding drive assembly to the
location to which the roll drive cover has been
attached using the two screws that have been
removed in step 7 while hanging the belt on
the pulley.
* Fit it by pressing it down.

1-3-18

Figure 1-3-26

Belt

Pulley

Upper winding
drive assembly

Screw

Figure 1-3-27

2A7

9. Fit the tension plate paper feed assembly
using a drum lift pin.

10. Fit the blade spring to the tension plate paper
feed assembly and the drum motor assembly.

11. Fit the feed clutch and secure it using the
stopper.

12. Connect the 2-pin connector of the feed clutch.

Drum lift pin

Drum motor
assembly

Tension plate
paper feed assembly

Blade spring

Figure 1-3-28

Feed clutch

2-pin
connector

Stopper

13. Connect the 3-pin connector and the 2-pin
connector of the upper winding drive
assembly.

Figure 1-3-29

3-pin connector

2-pin connector

Upper winding drive
assembly

Figure 1-3-30

1-3-19

2A7

100V/120V models only

14. Pull out the roll unit of the main body, fit the
upper roll unit heater to the roll guide plate
from the front of the machine using two
M4 × 06 bronze binding screws, insert the two
cable ties into the holes of the roll guide plate,
and secure them to tie the harness.

Upper roll unit heater

M4 × 06 bronze binding screws

Roll guide plate

Cable ties

Figure 1-3-31

15. Connect the connector of the upper roll unit
heater to the connector of the main body of the
machine and fit the heater connector cover
using a M4 × 06 bronze binding screw.

16. Paste the high temperature caution label.

17. Keeping the right slider assembly and the left
slider assembly pulled out, fit them to the side
plates at the lower location using two M4 × 06
bronze binding screws respectively.

Upper roll unit heater

High temperature caution label

Connector of the main body

Figure 1-3-32

Heater
connector

Heater connector cover

M4 × 06 bronze binding screw

Right slider
assembly

1-3-20

M4 × 06
bronze
binding
screws

Side plate

Figure 1-3-33

2A7

y

18. Hang the upper size detection assembly on
the two spot sections of the roll guide and
secure it using two M4 × 06 bronze binding
screws.

19. Connect the connector of the upper size
detection assembly.

20. Fit the roll drive gear 40 to the pin located
inside the left side plate and secure it using the
E ring.

Spot sections

Upper size detection
assembly

M4 × 06 bronze binding screws

Figure 1-3-34

Roll drive gear 40

Connector

Pin

E ring

21. Pull out the right slider assembly and the left
slider assembly that have been fitted, place
the upper roll unit on the assemblies, and
secure it to them from above using two M4 × 06
bronze binding screws respectively.
* When carrying the upper roll unit, be sure to

grasp the lower portions of the right and left
side plates. Grasping the guide plate for
carrying may cause deformation of the guide
plate, resulting in malfunctions.

Figure 1-3-35

M4 × 06 bronze
binding screws

Left slider
assembly

Upper roll unit

M4 × 06
bronze
binding
screws

Right
slider
assembl

Figure 1-3-36

1-3-21

2A7

g

22. Insert the roll flanges into the right and left
portions of the paper and turn the levers of the
roll flanges in the direction indicated by the
arrow to secure them.

23. Set the paper in the upper roll unit and insert
the upper roll unit securely into the main body
of the machine.

24. Refit the covers that have been removed to
their original positions.

25. Turn the main switch on and enter the
maintenance mode.

26. Run maintenance item U272 and set the
optional roll unit setting to “ON”.

27. Exit the maintenance mode.

28. Make a test copy to check the operation.

Roll flan

Paper

es

Figure 1-3-37

1-3-22

1-3-5 Attaching the original tray

Procedure

1. Detach the original loop guide.

2. Fit the four drum lift pins and two M4 × 06
bronze binding screws into the upper rear
cover.

2A7

Drum lift pin

Drum lift pin

M4 × 06 bronze
binding screw

3. Hang the brackets on the pins and screws
installed in step 2.

4. Attach the original tray hinges to the lower rear
cover using the fixing fulcrum pins.

5. Insert the support bar into the holes on the
original tray hinges.

Drum lift pin

Original tray hinge

Fixing
fulcrum pin

Brackets

M4 × 06 bronze
binding screw

Figure 1-3-38

Figure 1-3-39

Drum lift pin

Support bar

Original
tray hinge

Fixing
fulcrum pin

Figure 1-3-40

1-3-23

2A7

6. Insert the fulcrum bar of the original tray into
the top holes of the brackets, and then attach
the M3 × 05 bronze binding screw to each end
of the bar.

7. Hook the original stopper onto the original tray.

M3 × 05 bronze
binding screw

Original tray

Original tray

Original stopper

M3 × 05 bronze
binding screw

Figure 1-3-41

Figure 1-3-42

1-3-24

1-3-6 Attaching the key counter (option)

Procedure

1. Open the front covers.

2. Pull the main unit release levers and open the
detachable unit. Then, open the lower right
cover and remove the three screws from the
side of the front right cover. After that, remove
the two screws from the front of the front right
cover and detach the cover.

3. Remove the two screws from the main switch
assembly cover and then the cover.

4. Remove the two screws from the key counter
cover and then the cover.

2A7

Main switch
assembly cover

Key counter

cover

Screw

5. Remove the shorting plug from the 4-pin
connector on the main body.

6. Connect the 4-pin connector of the key counter
socket to the 4-pin connector on the main
body.

7. Attach the key counter socket to the main
switch assembly using the two screws that
locked down the key counter cover.

8. Reattach the main switch assembly cover
using the two screws.

9. Refit the front right cover and close the lower
right cover.

10. Refit the front right cover and press in the main
unit release levers until closing the detachable
unit.

11. Set the key counter in the key counter socket.

12. Turn the main switch on and enter the mainte­nance mode.

13. Run maintenance item U204 and set “Key
counter”.

14. Exit the maintenance mode.

15. Remove the key counter and check that the
message “Insert key counter.” is displayed.

16. Check the key counter counts up by one each
time a copy is made.

Screws

Key counter socket

Screws

Screw

Figure 1-3-43

Shorting plug

4-pin connector

Figure 1-3-44

4-pin connector

1-3-25

2A7

1-3-7 Installing expansion memory (DIMM, option)

The following parts are required to install the expansion memory board on the IPU PCB.
Expansion memory board (168-pin DIMM, 128 MB, 256 MB or 512 MB)

1. Remove the six screws in the lower rear cover and loosen the three screws at the bottom of the cover. Then, lift the

cover upward and out.

2. Install the expansion memory board in expansion memory connectors CN8 and CN9 on the IPU PCB.

* Hold the expansion memory board by the sides, orient so that the cutouts on the connector and board align, and press-

fit into the socket from above.

IPU PCB

Cutouts on expansion
memory connectors CN8 and CN9

Cutouts

Expansion memory board

3. Refit the lower rear cover.

CN8

CN9

Figure 1-3-45

1-3-26

1-4-1 Maintenance mode

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

(1) Executing a maintenance item

Start

2A7

Enter “10871087”.

Use the numeric keys or the cursor
up/down keys to enter the number of
the maintenance item to be executed.

Press the start key.

That maintenance item will be run.

Press the stop/clear key.

Yes

Run that item again?

- - - - - Entering the maintenance mode

- - - - - Selecting the maintenance item

No

Yes

Use the numeric keys or the cursor
up/down keys to enter “001”, and then
press the start key

Run another

maintenance item?

No

End

- - - - - Exiting the maintenance mode

1-4-1

2A7

(2) Maintenance mode item list

Section

General

Initialization

Drive, paper
feed, paper
conveying and
cooling
systems

Item

No.

U000 Printing out an own-status report ———

U001 Exiting the maintenance mode ———

U003 Setting the service telephone number ———

U004 Setting the machine model number ———

U005 Copying without paper ———

U019 Displaying the ROM version ———

U020 Initializing all data ———

U030 Checking the operation of the motors ———

U031 Checking switches for paper conveying ———

U032 Checking the operation of the clutches ———

U033 Checking the operation of the solenoids ———

U034 Adjusting the print start timing Roll: 0

U037 Checking the operation of the fan motors ———

U038 Checking safety switches ———

U039 Adjusting printing magnification

U040 Adjusting the synchronized cut length 0

U041 Adjusting the standard cut length Normal/1/S: 0

Content of maintenance item Initial setting*

Bypass: 0

Normal/MAIN SCAN: 0
Normal/SUB SCAN: 0
Vellum/MAIN SCAN: 0

Vellum/SUB SCAN: 0

Film/MAIN SCAN: 0

Film/SUB SCAN: 0

Normal/1/M: 0

Normal/1/L: 0

Normal/2/S: 0

Normal/2/M: 0

Normal/2/L: 0
Normal/3/S: 0

Normal/3/M: 0

Normal/3/L: 0

Vellum/1/S: 0

Vellum/1/M: 0

Vellum/1/L: 0
Vellum/2/S: 0

Vellum/2/M: 0

Vellum/2/L: 0
Vellum/3/S: 0

Vellum/3/M: 0

Vellum/3/L: 0

* Initial setting when executing maintenance item U020.

1-4-2

2A7

Section

Drive, paper
feed, paper
conveying and
cooling
systems

Optical

High voltage

Developing

Fixing and
cleaning

Item

No.

U041 Adjusting the standard cut length Film/1/S: 0

U044 Adjusting the long copy cut length PLAIN PAPER: 0

U045 Checking paper size switches ———

U060 Adjusting the input gamma Copier: 0

U061 Checking the operation of the xenon lamps ———

U065 Adjusting the scanning magnification Main scan (%): 0

U066 Adjusting the scanner leading edge registration 0

U067 Adjusting the optical axis (center line) 0

U073 Checking the operation of the original motor ———

U077 Checking the switches for original conveying ———

U079 Checking the shading operation ———

U090 Checking the AGC processing operation ———

U100 Setting the drum surface potential Grid data: 158

U101 Turning the transfer/separation charger on ———

U105 Forcing the cleaning lamps to be turned on ———

U111 Checking/Clearing the drum drive time 0

U129 Turning potential correction on/off ON

U130 Initial setting for the developer ———

U131 Changing the initial setting for the developer Control: 120

U132 Forcing toner to be replenished ———

U135 Checking the operation of the toner feed motor ———

U139 Displaying thermistor temperatures ———

U155 Displaying the toner sensor output ———

U156 Changing the toner density control data Adjust: 0

U157 Checking/Clearing the developing section drive time 0

U158 Checking/Clearing the developing count 0

U160 Coating the cleaning blade with toner ———

U162 Forced stabilization ———

U163 Releasing the fixing section error state ———

U196 Checking the operation of the fixing heater ———

U199 Displaying the fixing unit thermistor temperatures ———

Content of maintenance item Initial setting*

Film/1/M: 0

Film/1/L: 0
Film/2/S: 0

Film/2/M: 0

Film/2/L: 0
Film/3/S: 0

Film/3/M: 0

Film/3/L: 0

VELLUM: 0

FILM: 0

Scanner: 0

Sub scan (%): 0

Target Level: 200

LPH: 7

* Initial setting when executing maintenance item U020.

1-4-3

2A7

Section

Operation
panel/Optional
units

Mode setting

Image
processing

Item

No.

U200 Turning all LEDs on ———

U204 Turning the key card/key counter option on/off OFF

U213 Checking the operation of the counters ———

U214 Checking the upper roll unit ———

U245 Checking messages ———

U250 Setting the maintenance cycle 3000 m

U251 Checking/Clearing the maintenance count 0

U252 Setting the region of use JAPAN METRIC

U256 Turning the auto preheat function on/off ON

U258 Switching copy operation at toner empty detection Single

U262 Ignoring a call for service detection ———

U267 Adjusting the cutting length for the paper leading edge Select temperature

U269 Selecting the timing for total counting Paper feeding

U271 Setting the unit of counting Total count: 1.0

U272 Turning the upper roll unit option on/off OFF

U273 Setting the maximum paper length Paper length Ltd.:

U344 Setting the preheat (energy saving) mode Energy save

U400 Adjusting the image width in the main scanning direction 0

U406 Adjusting the trailing edge margin Trailing edge: 0

U450 Selecting the PG mode ———

U451 PG gray printout ———

U452 PG 16-level grayscale printout ———

U454 Adjusting the exposure amount Normal original: 0

U455 Adjusting the automatic exposure Base: 3

U457 Adjusting the filter gain Normal original: 10

U459 Adjusting the output gamma 0

U461 Adjusting the focus and measuring the solid-black density ———

U462 Printing PG to check LPH operation

U470 Setting the data compression ratio 80

U475 Setting the stain compensation mode MODE1

U476 Setting the photo mode scanning width MODE1

Content of maintenance item Initial setting*

Key counter: 0.1

6000

Returnable Len. L:

1400

Character/Line: 0

Photo: 0

Character/Line: 10

Photo: 10

* Initial setting when executing maintenance item U020.

1-4-4

2A7

Other

Section

Item

No.

U901 Checking/Clearing total copy counts by paper feed location 0

U903 Checking/Clearing the paper jam counts 0

U904 Checking/Clearing the call for service counts 0

U908 Checking/Clearing the total count 0

U916 Clearing all counts ———

U991 Checking/Clearing the scan count 0

U993 Printing out all PGs ———

U999 Checking the memory ———

Content of maintenance item Initial setting*

* Initial setting when executing maintenance item U020.

1-4-5

2A7

(3) Contents of maintenance mode items

Item No.

U000 Printing out an own-status report

Description

Prints out a list of the current settings of all maintenance items, and occurrences of paper jams and service
calls.

Purpose

To check the current setting of the maintenance items, or the occurrences of paper jams and service calls.
Before initializing or replacing the backup ROM, print out a list of the current settings of the maintenance items
so that you can reenter the same settings after initialization or replacement.

Method

1. Press the start key. The screen that allows you to select the desired item will be displayed.

2. Use the cursor up/down keys to select the item that you want to print out.

Display List to be printed out

Maintenance List of the current settings of all maintenance items
JAM List of paper jams
Service Call List of service calls
User default List of current user settings

3. Press the start key. The test copy screen will be displayed.

4. Press the start key. The selected list will be printed out.

Description and Procedure

Maintenance

JAM

Service Call

User default

Figure 1-4-1 Own-status report

1-4-6

Completion

Press the stop/clear key.

2A7

Item No.

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 machine will enter the normal copy mode.

U003 Setting the service telephone number

Description

Sets the telephone number to be displayed when a service call code is detected.

Purpose

To set (during initial set-up of the machine) the telephone number for contacting service.

Method

Press the start key.

• The currently set telephone number will be displayed.

Setting

1. Use the numeric keys and the keys shown below to enter a telephone number (up to 16 digits).

• Use the cursor left/right keys to move the cursor and the cursor up/down keys to select the desired
number or symbol.

• The display at the cursor position will scroll through the numbers and symbols shown below each time the
cursor up/down keys are pressed.

Description and Procedure

Key Numbers/Symbols

Numeric keys 0 to 9
APS/AMS key *
100% key #
Preset R/E key [
Media key ]
Paper source key ­Cut size key (space)

2. Press the start key and set the telephone number. If you want to cancel the telephone number setting,
press the stop/clear key.

U004 Setting the machine model number

Description

Displays and changes the machine model number.

Purpose

To check, as well as to set, the machine model number.

Method

Press the start key.

• The current machine model number will be displayed.

Setting

1. Use the numeric keys to enter the lowest 6 digits of the machine model number. (If you want to clear the
current machine model number, press the reset key.)

• It is not necessary to enter the first 2 digits (“37”) of the machine model number.

2. Press the start key and set the machine model number.

Completion

Press the stop/clear key.

1-4-7

2A7

Item No.

U005 Copying without paper

Description

Initiates copy operation without paper feed.

Purpose

To check the overall operation of the machine.

Method

1. Press the start key.

2. Press the interrupt key. The test copy screen will be displayed.

3. Remove all the paper from the paper source.

4. Select the operation conditions on the test copy screen.

• Set the number of copies to be made to 99 for continuous operation.

5. Press the start key. Test copying will start.

• Copy operation will be initiated without paper under the set conditions and the original conveying section
will feed the original accordingly.

Completion

Press the stop/clear key.

U019 Displaying the ROM version

Description

Displays the part number and version for the ROM fitted to each PCB.

Purpose

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

Method

1. Press the start key.

2. Use the cursor up/down keys to switch between screens and select the ROM that you want to check.

3. Use the cursor left/right keys to switch the displayed information.

• The part number and version for the ROM will be displayed.

Description and Procedure

Display Description

Engine Part number and version for the engine’s ROM
Main Part number and version for the main ROM
Scanner/MMI Part number and version for the scanner/MMI

HDC Part number and version for the HDC
Font Part number and version for the font ROM
Engine boot Part number and version for the engine boot

Main boot Part number and version for the main boot
Scanner/MMI boot Part number and version for the scanner/MMI boot
Option font Part number and version for the optional font ROM

Completion

Press the stop/clear key.

U020 Initializing all data

Description

Initializes the backup ROM on the engine main PCB in order to return to the factory default settings.

Purpose

Use when replacing the engine main PCB.

Method

1. Press the start key.

2. Use the cursor up/down keys to select “Action”.

• If you want to cancel the initialization, select “Cancel”.

3. Press the start key.

• All data in the backup ROM will be initialized and the screen for selecting a maintenance item No. will be
displayed again.

1-4-8

2A7

Item No.

U030 Checking the operation of the motors

Description

Drives each motor.

Purpose

To check the operation of each motor.

Method

1. Press the start key.

2. Use the cursor up/down keys to select the motor that you want to check.

Display Operation

Main/Drum motor The main motor (MM), drum motor (DM), and developing

bias are turned on.
Fixing motors The fixing motor (FM) is turned on.
Feed motors The paper feed motor (PFM) is turned on.

3. Press the start key.

• The selected motor is turned on.

4. When you want to stop the motor, press the stop/clear key.

Completion

Press the stop/clear key.

U031 Checking switches for paper conveying

Description

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

Purpose

To check the operation of the switches for paper conveying.

Method

1. Press the start key.

2. Use the cursor up/down keys to switch between screens and select the switch that you want to check.

3. Turn each switch on and off manually to check its status.

• When a switch is detected to be in the on position, the display for that switch will be highlighted.

Description and Procedure

Display Switch name

Pulse se. 1 Upper paper empty switch* (PESW-U)
Pulse se. 2 Middle paper empty switch (PESW-M)
Pulse se. 3 Lower paper empty switch (PESW-L)
Lead 1 Upper paper feed switch (PFSW-U)
Lead 2 Middle paper feed switch (PFSW-M)
Lead 3 Lower paper feed switch (PFSW-L)
Resist Registration switch (RSW)
Output Eject switch (ESW)

Lead Bp Bypass timing switch (BTSW)
BPResi. Bypass registration switch (BRSW)

* Optional

Completion

Press the stop/clear key.

1-4-9

2A7

Item No.

U032 Checking the operation of the clutches

Description

Turns each clutch on.

Purpose

To check the operation of each clutch.

Method

1. Press the start key.

2. Remove all the paper from the paper source.

3. Use the cursor left/right keys to switch between screens and select the clutch that you want to check.

4. Use the cursor up/down keys to select the clutch that you want to check.

• The display for the selected clutch will be highlighted.

5. Press the start key.

• The selected clutch will be turned on for 1 second and the paper feed motor (PFM) will be turned on as
well.

Display Clutch name

feed 1 Upper feed clutch* (FCL-U)
feed 2 Middle feed clutch (FCL-M)
feed 3 Lower feed clutch (FCL-L)
CL1 Upper roll winding clutch* (RWCL-U)
CL2 Middle roll winding clutch (RWCL-M)
CL3 Lower roll winding clutch (RWCL-L)
Roll feed Roll feed clutch (RFCL)
Roll resi. Roll registration clutch (RRCL)

BPFeed Bypass feed clutch (BFCL)
BPResist Bypass registration clutch (BRCL)

* Optional

Completion

Press the stop/clear key.

U033 Checking the operation of the solenoids

Description

Applies current to each solenoid in order to check its on status.

Purpose

To check the operation of each solenoid.

Method

1. Press the start key.

2. Use the cursor up/down keys to select the solenoid that you want to check.

• The display for the selected solenoid will be highlighted.

3. Press the start key.

• The selected solenoid will be turned on for 1 second.

Description and Procedure

1-4-10

Display Solenoid name

Separa. of solenoids Separation claw solenoid (SSOL)
Main switch solenoid (Turns power off)

• Select “Main switch solenoid” in order to check the operation of the main switch when the auto shut-off
function engages.

Completion

Press the stop/clear key.

2A7

Item No.

U034 Adjusting the print start timing

Method

See page 1-6-44.

U037 Checking the operation of the fan motors

Description

Drives each fan motor.

Purpose

To check the operation of each fan motor.

Method

1. Press the start key.

2. Use the cursor up/down keys to select the fan motor that you want to check.

Display Operation

LPH The LPH fan motor (LFM) is turned on.
Fixing The fixing fan motor (FFM) is turned on at full speed.
Fixing Low The fixing fan motor (FFM) is turned on at half speed.
Convey The paper conveying section fan motor (PCFM) is turned on.

3. Press the start key.

• The selected fan motor will be turned on.

4. When you want to stop the motor, press the stop/clear key.

Completion

Press the stop/clear key.

U038 Checking safety switches

Description

Displays the on/off status of each safety switch.

Purpose

To check the operation of the safety switches.

Method

1. Press the start key.

2. Open the respective covers to turn each switch on and off to check its status.

• When a switch is detected to be in the on position, the display for that switch will be highlighted.

Description and Procedure

Display Switch name Opening cover

Ori. Table Safety switches 1 and 2 (SSW1&2) Detachable unit
Fixing Safety switch 3 (SSW3) Eject cover
Dis. tank Safety switch 4 (SSW4) Right cover
F cover Safety switches 5 and 6 (SSW5&6) Front covers
Hopper Toner replenishing slot opening cover switch (OCSW) Toner replenishing slot
Original 1 Safety switches 7 (SSW7) Original cover
Original 2 Safety switches 8 (SSW8) Original leading edge cover

Completion

Press the stop/clear key.

1-4-11

2A7

Item No.

U039 Adjusting printing magnification

Method

See page 1-6-43.

U040 Adjusting the synchronized cut length

Method

See page 1-6-46.

U041 Adjusting the standard cut length

Method

See page 1-6-45.

U044 Adjusting the long copy cut length

Method

See page 1-6-47.

U045 Checking paper size switches

Description

Displays the on/off status of each paper detection switch in the upper roller unit (optional) or middle/lower roller
units.

Purpose

To check the operation of the paper size switches.

Method

1. Press the start key.

2. Turn each switch on and off manually to check its status.

• When a switch is detected to be in the on position, the display for that switch will be highlighted.

Description and Procedure

Display Description

P.SIZE11 Upper paper size switch 1* (PSSW1-U)
P.SIZE12 Upper paper size switch 2* (PSSW2-U)
P.SIZE13 Upper paper size switch 3* (PSSW3-U)
P.SIZE14 Upper paper size switch 4* (PSSW4-U)
P.SIZE21 Paper size switch 1 (PSSW1)
P.SIZE22 Paper size switch 2 (PSSW2)
P.SIZE23 Paper size switch 3 (PSSW3)
P.SIZE24 Paper size switch 4 (PSSW4)
P.SIZE25 Paper size switch 5 (PSSW5)

* Optional

Completion

Press the stop/clear key.

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2A7

Item No.

U060 Adjusting the input gamma

Description

Adjusts the density at which images will be scanned in the copy operation mode or the scanner operation
mode.

Purpose

Used when the overall image is too light or too dark.

Method

1. Press the start key.

2. Use the cursor up/down keys to select the item that you want to set.

Display Setting item Setting range

Copier Adjust input gamma in the copy operation mode –15 to +15
Scanner Adjust input gamma in the scanner operation mode –15 to +15

3. Use the cursor left/right keys to change the setting as desired.

• Raising the setting value will increase the density while lowering it will decrease the density.

4. Press the start key to set the selected values.

5. Press the interrupt key. The test copy screen will be displayed.

6. Set the original and make a test copy.

Completion

Press the stop/clear key.

U061 Checking the operation of the xenon lamps

Description

Lights the right and left xenon lamps one at a time.

Purpose

To check whether the right and left xenon lamps are turned on.

Method

1. Press the start key.

2. Press the start key again.

• The right xenon lamp (XL-R) and left xenon lamp (XL-L) will light.

3. To turn the right and left xenon lamps off, press the stop/clear key.

Completion

Press the stop/clear key.

U065 Adjusting the scanning magnification

Method

See page 1-6-8.

Description and Procedure

U066 Adjusting the scanner leading edge registration

Method

See page 1-6-9.

U067 Adjusting the optical axis (center line)

Method

See page 1-6-10.

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2A7

Item No.

U073 Checking the operation of the original motor

Description

Operates the original motor (OM).

Purpose

To check the operation of the original conveying system.

Method

1. Press the start key.

2. Press the start key again.

• The following operations will take place every 4 seconds.
The original motor will be run normally.

The original motor will be operated in reverse.

The original motor will be turned off.

3. To turn the original motor off, press the stop/clear key.

Completion

Press the stop/clear key.

U077 Checking the switches for original conveying

Description

Displays the on/off status of each switch on the original conveying path.

Purpose

To check the operation of the switches when the original size is not detected correctly or when an original jam
occurs.

Method

1. Press the start key.

2. Turn each switch on and off manually to check its status.

• When a switch is detected to be in the on position, the display for that switch will be highlighted.

Description and Procedure

Display Switch name

Size SW4 Original size switch 4 (OSSW4)
Size SW3 Original size switch 3 (OSSW3)
Size SW2 Original size switch 2 (OSSW2)
Size SW1 Original size switch 1 (OSSW1)
Back SW Original trailing edge switch (OTSW)
Front SW Original leading edge switch (OLSW)

Completion

Press the stop/clear key.

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2A7

Item No.

U079 Checking the shading operation

Description

Performs the shading operation and shows the CIS channel data.

Purpose

To check the respective channel data when the solid black areas are too light or when white stripes appear on
the copy image. Also used when installing the optional book carrier.

Note

Always install the original cover when running maintenance item U079.

Method

1. Press the start key.

• After shading correction is completed, the data for each CIS channel will be displayed.

2. Use the cursor up/down keys to access the next data display.

Sample display

Data for CH1 to CH2 with the xenon lamp turning on/off

Description and Procedure

Checking Shading Correct. U079

BL/ch1 : 8

WH/ch1 : 103

BL/ch2 : 8

WH/ch2 : 105

Data for CH3 to CH4 with the xenon lamp turning on/off

Checking Shading Correct. U079

BL/ch3 : 7

WH/ch3 : 110

• When the data with the xenon lamp off is around 0 and that with the lamp on is 100 or more, the shading

operation is judged to be normal.

Completion

Press the stop/clear key.

BL/ch4 : 12

WH/ch4 : 102

Figure 1-4-2

1-4-15

2A7

Item No.

U090 Checking the AGC processing operation

Description

Performs AGC processing and shows the CIS channel data.

Purpose

To check for an AGC error during A-D conversion.

Method

1. Press the start key.

• After AGC processing is completed, the data for each CIS channel will be displayed.

2. Use the cursor up/down keys to access the next data display.

Sample display

Data for CH1 to CH2 with the xenon lamp turning on/off

Checking AGC Correct. U090

BL/ch1 : 32

WH/ch1 : 260

Description and Procedure

BL/ch2 : 32

WH/ch2 : 255

Data for CH3 to CH4 with the xenon lamp turning on/off

Checking AGC Correct. U090

BL/ch3 : 29

WH/ch3 : 257

• When the data with the xenon lamp off is 100 or less and that with the lamp on is 250 or more, the AGC
processing operation is judged to be normal.

Completion

Press the stop/clear key.

U100 Setting the drum surface potential

Method

See page 1-6-21.

BL/ch4 : 27

WH/ch4 : 253

Figure 1-4-3

1-4-16

2A7

Item No.

U101 Turning the transfer/separation charger on

Description

Performs transfer and separation charging.

Purpose

To check, when a transfer or separation problem occurs, whether charging is being performed correctly or not.

Method

1. Press the start key.

2. Use the cursor up/down keys to select the operation that you want to be performed.

Display Operation

TC: OFF (ON) Transfer charging
AC: OFF (ON) Separation charging
Transcript: OFF (ON) Switch between high and low transfer voltage

3. Use the cursor left/right keys to switch between the off and on display, or switch between on and off for
“Transcript”.

4. Press the start key.

• The selected charging operation will be performed.

5. When you want to stop the charging operation, press the stop/clear key.

Completion

Press the stop/clear key.

U105 Forcing the cleaning lamps to be turned on

Description

Turns the right, middle and left cleaning lamps on.

Purpose

To check, when an offset appears in the image, the operation of the cleaning lamps.

Method

1. Press the start key.

2. Press the start key again.

• The right cleaning lamp (CL-R), middle cleaning lamp (CL-M) and the left cleaning lamp (CL-L) will be

turned on.

3. To turn the right, middle and left cleaning lamps off, press the stop/clear key.

Completion

Press the stop/clear key.

U111 Checking/Clearing the drum drive time

Description

Displays and clears the drum drive time.

Purpose

To check usage conditions of the drum, as well as to clear the drum drive time after replacing the drum during
the periodic maintenance service.

Method

Press the start key.

• The current drum drive time (minute) will be displayed.

Clearing the drive time

1. Use the numeric keys to enter “0” or press the reset key.

2. Press the start key to clear the drum drive time.

• If you want to cancel the operation to clear the drum drive time, press the stop/clear key.

Completion

Press the stop/clear key.

Description and Procedure

1-4-17

2A7

Item No.

U129 Turning potential correction on/off

Description

Selects whether or not potential correction is to be performed.

Purpose

To turn potential correction off when the drum surface potential sensor (DPS) has been removed for
replacement, and to enable the copy operation while ignoring a C5500 (drum surface potential sensor error)
detection.

Method

Press the start key.

• The current setting will be displayed.

Setting

1. Use the cursor left/right keys to select either “ON” or “OFF”, as desired.

Display Setting

ON Potential correction
OFF No potential correction

• The factory default setting is “ON”.

2. Press the start key and check the setting.

Note

Select “OFF” before removing the drum surface potential sensor for replacement, and select “ON” again after
installing the new sensor.

Completion

Press the stop/clear key.

U130 Initial setting for the developer

Description

Automatically sets the toner sensor control voltage for the installed developer.

Purpose

To set the desired value during initial set-up of the machine or when replacing the developer.

Method

1. Press the start key.

2. Press the start key again.

• Aging will be performed for 3 minutes and the value for toner sensor output will be displayed. During this
time, neither toner replenishment nor toner empty detection will be performed. After aging is completed,
the toner sensor control voltage for the installed developer will automatically be set and the value
displayed.

Description and Procedure

1-4-18

Display Description

Toner C Toner sensor output value
Target Toner sensor control voltage
Confirm Automatic setting of the toner sensor control voltage

• If you want to stop the machine and return the setting to its previous value without having the toner sensor
control voltage set automatically, press the stop/clear key.

Supplement

The following data is also changed or cleared (set to zero) when this maintenance item is performed:

• Changing the toner sensor control voltage (U131)

• Clearing the toner density control data setting (U156)

• Clearing the developing section drive time (U157)

• Clearing the developing count (U158)

Completion

Press the stop/clear key.

2A7

Item No.

U131 Changing the initial setting for the developer

Description

Displays and changes the toner sensor control voltage that was automatically set in maintenance item U130.

Purpose

To check the automatically set toner sensor control voltage, as well as to change the toner density if the images
are too dark or to light.

Method

Press the start key.

• The current toner sensor control voltage will be displayed.

Setting

1. Use the cursor up/down keys to select the item that you want to set.

Display Setting item Setting range

Control Toner sensor control voltage 0 to 255

2. Use the cursor left/right keys to change the setting as desired.

• Raising the toner sensor control voltage will increase toner density while lowering the voltage will

decrease the density. Raising the toner sensor control voltage too high may result in toner scattering.

3. Press the start key to set the selected values.

Completion

Press the stop/clear key.

U132 Forcing toner to be replenished

Description

Forcibly replenishes the toner until the toner sensor output reaches the toner control level.

Purpose

Used when a toner empty state is frequently detected.

Method

1. Press the start key.

• The following data will be displayed.

Description and Procedure

Display Description

Toner sensor outp Toner sensor output value
Toner sensor leve Toner control level
Ton. Sen. cont. d Toner sensor control voltage

2. Press the start key.

• Toner will be replenished until the toner sensor output reaches the toner control level.

3. When you want to stop the operation, press the stop/clear key.

Completion

Press the stop/clear key.

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2A7

Item No.

U135 Checking the operation of the toner feed motor

Description

Drives the toner feed motor.

Purpose

To check the operation of the toner feed motor when the toner is not replenished properly.

Note

Be sure to operate the toner feed motor for only a few seconds as driving it for too long may cause toner to jam
which can result in the machine locking up.

Method

1. Press the start key.

2. Press the start key again.

•The toner feed motor will be turned on for 5 seconds. If you want to stop the motor while it is running, press
the stop/clear key.

Completion

Press the stop/clear key.

U139 Displaying the thermistor temperatures

Description

Displays the detected temperatures of the thermistors.

Purpose

To check the temperature of the drum as well as that outside the machine.

Method

Press the start key.

• The detected temperature (°C) of the thermistors shown below will be displayed.

Description and Procedure

Display Corresponding thermistor

Drum (°C) Developing thermistor (temperature around the developing section)
Atmosphere (°C) External temperature thermistor (temperature outside the machine)

Completion

Press the stop/clear key.

U155 Displaying the toner sensor output

Description

Displays the toner sensor output value and related data.

Purpose

To check the toner sensor output.

Method

1. Press the start key.

2. Press the start key again.

• The machine will begin operation without toner replenishment control, and the current data will be
displayed.

Display Description

Toner C Toner sensor output value after the start key is pressed
Target Current toner control level
Control Current toner sensor control voltage (corrected values for

temperature and developing count)

Temp. Current developing thermistor detection temperature (°C)

3. When you want to stop the operation, press the stop/clear key.

Completion

Press the stop/clear key.

1-4-20

2A7

Item No.

U156 Changing the toner density control data

Description

Displays and changes the data used in controlling the toner density.

Purpose

Performed during replacement of the engine main PCB.

Method

Press the start key.

• The current toner density control data will be displayed.

Display Setting item Setting range

Tmot. ON Toner feed motor on level ———
Tmo. OFF Toner feed motor off level ———
Empty Toner empty level ———
Forbid Copy disabling level ———
Adjust All data shift –30 to +30

Setting for all data shift

1. Use the cursor up/down keys to select “Adjust”.

2. Use the cursor left/right keys to change the setting as desired.

3. Press the start key to set the selected value.

• The values for all four items will be changed by the amount selected here.

Completion

Press the stop/clear key.

U157 Checking/Clearing the developing section drive time

Description

Displays and clears the developing section drive time.

Purpose

To check the developing section drive time after replacing the developer.

Method

Press the start key.

• The current developing section drive time will be displayed.

Clearing the drive time

1. Use the numeric keys to enter “0” or press the reset key.

2. Press the start key to clear the developing drive time.

• If you want to cancel the operation to clear the developing section drive time, press the stop/clear key.

Completion

Press the stop/clear key.

U158 Checking/Clearing the developing count

Description

Displays and clears the developing count.

Purpose

To check the developing count after replacing the developer.

Method

Press the start key.

• The current developing count will be displayed.

Clearing the time

1. Use the numeric keys to enter “0”.

2. Press the start key to clear the developing count.

• If you want to cancel the operation to clear the developing count, press the stop/clear key.

Completion

Press the stop/clear key.

Description and Procedure

1-4-21

2A7

Item No.

U160 Coating the cleaning blade with toner

Description

Applies toner to the cleaning blade by coating the drum with toner. This maintenance item can be run after
machine stabilization. If you want to run this maintenance item BEFORE machine stabilization, be sure to run
maintenance item U162 first.

Purpose

Used when replacing the cleaning blade or the drum, or during initial set-up of the machine.

Method

1. Press the start key.

2. Remove the cleaning blade from the drum.

3. Use the cursor up/down keys to select “Action”.

• If you want to cancel the operation, select “Cancel”.

4. Press the start key.

• Drum operation will begin and, after applying toner to the drum at a pre-determined interval, the drum will
be stopped.

5. Once the drum is stopped, open the detachable unit, move the cleaning blade back to the drum and
stabilize it there.

6. Close the detachable unit.

• The drum will turn at a pre-determined interval and will then stop.

Completion

Press the stop/clear key.

U162 Forced stabilization

Description

Cancels the stabilization drive of the fixing section regardless of the fixing temperature.

Purpose

To force the machine into a stable state before the fixing section reaches its stabilization temperature.

Method

1. Press the start key.

2. Press the start key again.

• A forced stabilization mode will be entered, the stabilization drive of the fixing section will be canceled

regardless of the fixing temperature, and the screen for selecting a maintenance item No. will be
displayed again.

Completion

Turn the main switch off and then back on again.

U163 Releasing the fixing section error state

Description

Releases the service call state that was generated in the fixing section.

Purpose

To release the service call state after any required repair, service or replacement of related parts whenever a
service call code is detected in the fixing section.

Method

1. Press the start key.

2. Press the start key again and the service call state will be released.

• If you want to cancel the operation to release the service call state, press the stop/clear key.

Completion

Turn the main switch off and then back on again.

Description and Procedure

1-4-22

2A7

Item No.

U196 Checking the operation of the fixing heater

Description

Turns the main or sub fixing heaters on.

Purpose

To check the fixing heaters.

Method

1. Press the start key.

2. Use the cursor up/down keys to select the heater that you want to turn on.

Display Description

HEAT1 Main fixing heater
HEAT2 Sub fixing heater

3. Press the start key.

• The selected heater will be turned on for 3 seconds.

Completion

Press the stop/clear key.

U199 Displaying the fixing unit thermistor temperatures

Description

Displays the detected temperatures of fixing unit thermistors 1 through 3 and the external temperature
thermistor.

Purpose

To check the fixing temperature when a fixing problem occurs.

Method

1. Press the start key.

• The detected temperature (°C) of the thermistors shown below will be displayed.

Description and Procedure

Display Description Corresponding thermistor

H.rol-M Surface temperature at the center of the heat roller Fixing unit thermistor 1
H.rol-E Surface temperature at the edges of the heat roller Fixing unit thermistor 2
P.rol-M Surface temperature at the center of the press roller Fixing unit thermistor 3
P.rol-E Surface temperature at the edges of the press roller Fixing unit thermistor 4
Atmosphere Temperature outside the machine External temperature thermistor

Completion

Press the stop/clear key.

U200 Turning all LEDs on

Description

Turns all of the LEDs on the operation panel on.

Purpose

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

Method

Press the start key.

• All of the LEDs on the operation panel will light up.

Completion

Press the stop/clear key to turn the LEDs off.

1-4-23

2A7

Item No.

U204 Turning the key card/key counter option on/off

Description

Turns the installation setting for the optional key card or key counter on/off.

Purpose

It is not necessary to run this maintenance item if a key card is installed on a 120 V specification machine. A key
card is not available for 220 – 240 V specifications.

Method

Press the start key.

Setting

1. Use the cursor up/down keys to select the type of optional counter that is installed.

Display Description

OFF No counter installed
Key counter The key counter is installed
Key card The MK-1 Key Card is installed
Key card 2 The DC Key Card I is installed

2. Press the start key to activate the selected setting.

Completion

Press the stop/clear key.

U213 Checking the operation of the counters

Description

Increases the count for each counter without actually making a copy.

Purpose

To check the operation of the counters.

Method

1. Press the start key.

2. Use the cursor up/down keys to select the counter for which you want to check operation.

Description and Procedure

Display Type of counter

Print counter Total counter
Scan counter Scan counter
Key counter Key counter*
Key card Key card*

* Optional

3. Press the start key.

• The count for the selected counter will be increased each time you press the start key.

Completion

Press the stop/clear key.

1-4-24

2A7

Item No.

U214 Checking the upper roll unit

Description

Checks the operation of the optional upper roll unit.

Purpose

Used to check the operation of the upper roll winding clutch when there are problems with paper feed from the
upper roll unit.

Method

1. Press the start key.

2. Manually turn the pulse plate for the upper paper empty switch (PESW-U) and check the operation of the
upper roll winding clutch (RWCL-U).

• If the upper roll winding clutch is on when the upper paper empty switch is on and the upper roll winding

clutch is off when the upper paper empty switch is off, the operation of the upper roll winding clutch is
judged to be normal.

Completion

Press the stop/clear key.

U245 Checking messages

Description

Displays all messages that appear in the message display.

Purpose

To check displayed messages.

Method

1. Press the start key.

• A message will be displayed.

2. Use the cursor up/down keys to switch between messages.

Completion

Press the stop/clear key.

U250 Setting the maintenance cycle

Description

Displays and changes the maintenance cycle.

Purpose

To check and change the maintenance cycle.

Method

Press the start key.

• The currently set maintenance cycle will be highlighted.

Setting

1. Use the numeric keys to enter the desired maintenance cycle.

• Setting range: 0 – 999999 (m)

Setting example

If you set the maintenance cycle to 1500, a message to inform you that it is time for periodic maintenance
will be displayed once the maintenance count reaches 1500 m.
If you set the maintenance cycle to 0, the maintenance indication message will not be displayed.

2. Press the start key to register the selected setting.

Completion

Press the stop/clear key.

Description and Procedure

1-4-25

2A7

Item No.

U251 Checking/Clearing the maintenance count

Description

Displays and clears or changes the maintenance count.

Purpose

To check, as well as to clear, the maintenance count during the periodic maintenance service.

Method

Press the start key.

• The current maintenance count will be displayed.

Clearing the count

1. Use the numeric keys to enter “0”.

2. Press the start key to clear the maintenance count.

• If you want to cancel the operation to clear the maintenance count, press the stop/clear key.

Changing the count

1. Use the numeric keys to enter the desired count value.

2. Press the start key to set the selected value.

• If you want to cancel the operation to change the maintenance count, press the stop/clear key.

Completion

Press the stop/clear key.

U252 Setting the region of use

Description

Sets operation procedures and displayed screens according to the region in which the machine will be used.

Purpose

Returns the region of use setting to the value before replacement or initialization when the backup ROM on the
engine main PCB has been replaced, or when the backup ROM has been initialize by running maintenance
item U020.

Method

Press the start key.

• The current setting will be highlighted.

Setting

1. Use the cursor up/down keys to select the region of use.

Description and Procedure

Display Description

JAPAN METRIC Metric specifications (Japan)
INCH Inch specifications (North America)
EUROPE METRIC Metric specifications (Europe)
ASIA PACIFIC Metric specifications (Asia/Oceania)

2. Press the start key to activate the selected setting.

Completion

Press the stop/clear key.

1-4-26

2A7

Item No.

U256 Turning the auto preheat function on/off

Description

Turns the auto preheat function on or off.

Purpose

Set according to the preference of the user.

Method

Press the start key.

• The current setting will be highlighted.

Setting

1. Use the cursor up/down keys to select either “ON” or “OFF”, as desired.

Display Setting

ON Turns the auto preheat function on
OFF Turns the auto preheat function off

• The factory default setting is “ON”.

• Any time you change the setting from “OFF” to “ON”, the time for the auto preheat function to engage will

be set to its default value (15 min).

2. Press the start key to activate the selected setting.

Completion

Press the stop/clear key.

U258 Switching copy operation at toner empty detection

Description

Selects the mode that the machine will enter (continuous copying or single copy) any time a toner empty state
is detected.

Purpose

Set according to the preference of the user.

Method

Press the start key.

• The current setting will be highlighted.

Setting

1. Use the cursor up/down keys to select either “Single” or “Continue”, as desired.

Description and Procedure

Display Setting

Single Only single copies possible
Continue Enables continuous copying

• The factory default setting is “Single”.

2. Press the start key to register the selected setting.

Completion

Press the stop/clear key.

1-4-27

2A7

Item No.

U262 Ignoring a call for service detection

Description

Enables you to control the machine by ignoring any call for service detection.

Purpose

To ignore any call for service detection in those cases when a call for service might be detected and operation
stopped, such as during adjustment of the machine.

Method

Press the start key.

Setting

• When you want to ignore only a specific type of call for service detection.

1. Use the cursor left/right keys to access the next display.

Cancel service call U262

C0210 : 0

C0220 : 0

C0310 : 0

Description and Procedure

C0800 : 0

ALL

Cancel service call U262

C6200 : 0

C6220 : 0

C7101 : 0

2. Use the cursor up/down keys to select the code for the type of call for service detection that you want to
ignore.

3. Use the numeric keys to enter the value that corresponds to the desired setting.

• If you want to return the setting to its original value, press the stop/clear key.

Display Setting

0 Does NOT ignore a call for service detection
1 Ignores a call for service detection

4. Press the start key to register the selected setting.

• When you want to ignore all types of call for service detection.

1. Use the cursor up/down keys to select “ALL”.

2. Use the numeric keys to enter the value that corresponds to the desired setting.

• If you want to return the setting to its original value, press the stop/clear key.

3. Press the start key to register the selected setting.

Completion

Press the stop/clear key.

C7200 : 0

ALL

Figure 1-4-4

1-4-28

2A7

Item No.

U267 Adjusting the cutting length for the paper leading edge

Description

Selects whether or not the cutting length for the leading edge of paper will be changed according to the
temperature outside the machine when vellum is being used and the roll cut key is pressed. It is also possible
to adjust the temperature at which the cutting length is changed.

Purpose

If the user’s preference is for the leading edge of paper to be cut at 279 mm regardless of the temperature
outside the machine, adjust this setting to “Ignore”.

Method

Press the start key.

Setting

1. Use the cursor up/down keys to select either “Select temperature” or “Ignore”, as desired.

Display Setting

Select temperature The cutting length for the leading edge of paper will be changed from 279 mm

to 800 mm when vellum is being used, the roll cut key is pressed and the
temperature outside the machine drops under 15°C.

Ignore Regardless of the temperature outside the machine, the cutting length for the

leading edge of paper will be set to 279 mm.

• The factory default setting is “Select temperature”.

2. Press the start key to activate the selected setting.

• If you selected “Select temperature”, you will need to perform step 3 below as well.

3. Use the cursor left/right keys to change the activated temperature as desired.

Description and Procedure

Setting item Setting range Default setting Allowable setting increment

Temperature –5 to +5 0 (15°C) 1°C

Example:
If you select –5°C as this setting, the cutting length for the leading edge of paper will be changed from
279 mm to 800 mm when the temperature outside the machine drops under 10°C.

4. Press the start key to register the selected setting.

Completion

Press the stop/clear key.

U269 Selecting the timing for total counting

Description

Sets the timing at which each count will be added to the total counter.

Purpose

Set according to the preference of the user.
If a paper jam occurs at a given location and the count timing is set to a point prior to that, the copy count (and
related cost) will go up without the corresponding copy being made. In cases such as this, it is possible to delay
the timing of the count.

Method

Press the start key.

• The current setting will be highlighted.

Setting

1. Use the cursor up/down keys to select either “Paper feeding” or “Output the back”, as desired.

Display Setting

Paper feeding One count will be added during paper feed.
Output the back One count will be added after paper is ejected.

• The factory default setting is “Paper feeding”.

2. Press the start key to register the selected setting.

Completion

Press the stop/clear key.

1-4-29

2A7

Item No.

U271 Setting the unit of counting

Description

Sets the unit of counting for the total counter and the optional key counter.

Purpose

To change the unit of counting to fit the paper usage.

Method

Press the start key.

• The current setting will be displayed.

Setting

1. Use the cursor up/down keys to select the item that you want to change the setting for.

Display Setting item Default setting

Total count (m) Total counter 1.0
Keycounter (m) Key counter 0.1

2. Use the cursor left/right keys to select a value of either 0.1 or 1.0, as desired.

• If you set the count value to 0.1, one count will be added to the selected counter for each 0.1 meters. If

you set the count value to 1.0, one count will be added for each meter.

• If you want to return the setting to its original value, press the stop/clear key.

3. Press the start key to register the selected setting.

Completion

Press the stop/clear key.

U272 Turning the upper roll unit option on/off

Description

Turns the installation setting for the optional upper roll unit on/off.

Purpose

Used when the optional upper roll unit is installed.

Method

Press the start key.

• The current setting will be displayed.

Setting

1. Use the cursor left/right keys to select either “ON” or “OFF”, as desired.

Description and Procedure

Display Setting

OFF The upper roll unit is NOT installed
ON The upper roll unit is installed

• The factory default setting is “OFF”.

• If you want to return the setting to its original value, press the stop/clear key.

2. Press the start key to activate the selected setting.

Completion

Press the stop/clear key.

1-4-30

2A7

Item No.

U273 Setting the maximum paper length

Description

Sets the length at which copy paper will be cut when making long copies and the maximum allowable original
length.

Purpose

Set according to the preference of the user.

Method

Press the start key.

• The current setting will be displayed.

Setting

1. Use the cursor up/down keys to select the item that you want to change the setting for.

Display Setting item Setting range Default setting

Paper length Ltd. Length at which copy paper will be cut 6000 – 9999 (mm) 6000

when making long copies

Returnable Len. L Maximum original length allowed for 1400 – 2500 (mm) 1400

returning

2. Use the cursor left/right keys to select the desired value for that setting.

• The setting can be changed to any 100 mm increment with the allowable setting range.

• If you want to return the setting to its original value, press the stop/clear key.

3. Press the start key to register the selected setting.

Completion

Press the stop/clear key.

U344 Setting the preheat (energy saving) mode

Description

Changes the control mode for the preheat (energy saving) function.

Purpose

Set according to the preference of the user, and give priority to either the time required to recover from the
preheat state or to saving more energy.

Method

Press the start key.

• The current setting will be highlighted.

Setting

1. Use the cursor up/down keys to select either “Energy save” or “Time save”, as desired.

Description and Procedure

Display Setting

Energy save Controls the fixing temperature at 105°C/221°F and stabilizes the

machine 210 seconds after releasing the preheat state.

Time save Controls the fixing temperature at 140°C/284°F and stabilizes the

machine 120 seconds after releasing the preheat state.

• The factory default setting is “Energy save”.

2. Press the start key to activate the selected setting.

Completion

Press the stop/clear key.

1-4-31

2A7

Item No.

U400 Adjusting the image width in the main scanning direction

Method

See page 1-6-11.

U406 Adjusting the trailing edge margin

Method

See page 1-6-48.

U450 Selecting the PG mode

Description

Selects and prints out the PG pattern that is to be generated at the copier.

Purpose

Used when performing adjustments related to printing images in order to check the status of other parts of the
machine, besides the scanning section, using a PG pattern that is generated without the need to scan an
original.

Method

1. Press the start key.

Display Setting item Setting range

Pattern Type of PG pattern 0 to 30
Exposure Printout density 0 to 60

2. Use the cursor up/down keys to select “Pattern”.

3. Use the cursor left/right keys to change the setting and, thereby, select the desired PG pattern.

4. Use the cursor up/down keys to select “Exposure”.

5. Use the cursor left/right keys to change the setting and, thereby, select the desired PG density.

• Raising the setting will increase the contrast of the image while lowering it will decrease the contrast.

6. Press the interrupt key. The test copy screen will be displayed.

7. Press the start key. The selected PG pattern will be printed out.

Completion

Press the stop/clear key.

U451 PG gray printout

Description

Prints out a gray test pattern.

Purpose

Used when check for problems with the IPU PCB, LPH or the drum, and whether or not the main charger wire,
main charger housing or main grid are dirty.

Method

1. Press the start key.

2. Press the start key again and the test copy screen will be displayed.

3. Press the start key one more time and the test pattern will be printed out.

Description and Procedure

1-4-32

Figure 1-4-5 PG gray printout

Completion

Press the stop/clear key.

2A7

Item No.

U452 PG 16-level grayscale printout

Description

Initiates current correction to the LPH and prints out a PG 16-level grayscale.

Purpose

Used when check for problems with the LPH, whether or not the main charger wire, main charger housing or
main grid are dirty, or to check the dark potential after replacing the drum.

Method

1. Press the start key.

2. Press the start key again and the test copy screen will be displayed.

3. Press the start key one more time and the test pattern will be printed out.

• The test pattern will be printed as a 16-level gradation.

Completion

Press the stop/clear key.

U454 Adjusting the exposure amount

Method

See page 1-6-12.

Description and Procedure

Figure 1-4-6 PG 16-level grayscale printout

U455 Adjusting the automatic exposure

Method

See page 1-6-13.

1-4-33

2A7

Item No.

U457 Adjusting the filter gain

Description

Sets the filter gain for each original mode.

Purpose

To adjust the filter gain so that text appears more clearly on copy images.

Method

Press the start key.

Setting

1. Use the cursor up/down keys to select the type of original that you want to change the setting for.

Display Type of original

Normal original Illustrations and newspapers
Character/Line Maps and originals with both text and photographs
Photo Originals that have been cut and pasted together. Shadows from

the areas around the pasted sections will be reduced.

2. Use the cursor left/right keys to select the desired setting.

Setting item Setting range Default setting

Filter gain 0 – 31 Normal original: 10, Character/Line: 10, Photo: 10

• Raising the setting will increase the contrast of the image while lowering it will decrease the contrast.

Lowering it will additionally reduce the instances where dirt on the contact glass can be seen on the
copies, but text will be harder to read as well.

3. Press the start key to register the selected setting.

Completion

Press the stop/clear key.

U459 Adjusting the output gamma

Description

Adjusts the density at which images will be printed.

Purpose

Used when the overall image is too light or too dark.

Method

Press the start key.

Setting

1. Use the cursor left/right keys to change the setting as desired.

Description and Procedure

1-4-34

Setting item Setting range Default setting

Gamma value to be used when printing images –5 to +5 0

• Raising the setting value will increase the density while lowering it will decrease the density.

2. Press the start key to set the selected values.

Completion

Press the stop/clear key.

2A7

Item No.

U461 Adjusting the focus and measuring the solid-black density

Description

Prints out a test pattern for adjusting the focus, as well as for measuring the density of a solid black image.

Purpose

Used to adjust the focus.

Method

1. Press the start key.

2. Use the cursor up/down keys to select the PG test pattern that you want to print out.

Display PG test pattern content

Adjust Focus Test pattern for adjusting the focus
Measure Black Density Image for adjusting solid black

3. Press the start key. The test copy screen will be displayed.

4. Press the start key again and the selected test pattern will be printed out.

Test pattern for adjusting the focus Image for adjusting solid black

Description and Procedure

Completion

Press the stop/clear key.

U462 Printing PG to check LPH operation

Description

Prints out a test pattern for checking LPH operation.

Purpose

Used when checking for problems with the LPH.

Method

1. Press the start key.

2. Use the cursor up/down keys to select the PG test pattern.

Display PG test pattern

PATTERN1 Continuous printing of PG for HDC
PATTERN2 Gray (half-tone) printing of PG for MIP

3. Press the start key. The test copying screen will be displayed.

4. Press the start key. The test pattern will be printed out.

Completion

Press the stop/clear key.

Figure 1-4-7

1-4-35

2A7

Item No.

U470 Setting the data compression ratio

Description

Sets the data compression ratio when the user default setting for the memory data compression is set to
“Standard-compression”.

Purpose

Fundamentally, the data compression ratio is selected in the corresponding user default setting, so there is
normally no need to change this setting here.

Method

Press the start key.

• The current setting will be displayed.

Setting

1. Use the cursor left/right keys to select the desired compression ratio.

Setting item Setting range Default setting

Compression ratio 1 to 99 80

• Raising the setting will decrease the compression ratio while lowering it will increase the ratio.

• If you want to return the setting to its original value, press the stop/clear key.

2. Press the start key to set the selected value.

Completion

Press the stop/clear key.

U475 Setting the stain compensation mode

Description

Sets the stain compensation mode.

Purpose

To select “MODE2” when stains or dust on the contact glass or the shading roller (middle upper original roller)
appear on the copy image.

Method

Press the start key.

Setting

1. Use the cursor up/down keys to select “MODE1” or “MODE2”.

Description and Procedure

Display Setting

MODE1 No stain compensation
MODE2 Stain compensation

• The factory default setting is “MODE1”.

2. If you selected “MODE2”, use the cursor left/right keys to change the setting.

Setting item Setting range Default setting

Low density –128 to +128 –100
reproducibility

• Raising the setting will increase the low density reproducibility of the image, and stains and dust will be

less visible in the copy image. Lowering it will decrease the low density reproducibility, making stains and
dust more visible in the copy image.

3. Press the start key to activate the setting.

Completion

Press the stop/clear key.

1-4-36

2A7

Item No.

U476 Setting the photo mode scanning width

Description

Sets the image scanning width when copying in the photo mode.

Purpose

To select “MODE2” if the image of the shading roller (middle upper original roller) fogs both edges of the copy
image in the photo mode.

Method

Press the start key.

Setting

1. Use the cursor up/down keys to select “MODE1” or “MODE2”.

Display Setting

MODE1 Scans at a width (original size switch) that is one size

larger than the detected size of the original.

MODE2 Scans at the width assigned to the detected size of the

original.

• The factory default setting is “MODE1”.

2. Press the start key to activate the setting.

Completion

Press the stop/clear key.

Description and Procedure

1-4-37

2A7

Item No.

Description and Procedure

U901 Checking/Clearing total copy counts by paper feed location

Description

Checks the total copy count of each paper feed location or resets all of the counts back to zero.

Purpose

Used to check the timing of the standard replacement of maintenance parts, or to clear all copy counts after
replacement of those parts.

Method

Press the start key.

• The copy count will be displayed for each paper feed location.

Sample display

Paper feeder counter U901

Bypass : 121212

1st dr : 232323

2nd dr : 343434

3rd dr : 343434

ALL

Figure 1-4-8

Display Paper source

Bypass Bypass
drawer 1 Upper roll unit*
drawer 2 Middle roll unit
drawer 3 Lower roll unit
ALL Clear counts for all locations

* Optional

Clearing the count

1. Use the cursor up/down keys to select “ALL”.

2. Press the start key.

• The copy counts for all paper feed locations will be returned to zero.

Completion

Press the stop/clear key.

1-4-38

2A7

Item No.

U903 Checking/Clearing the paper jam counts

Description

Checks the total number of paper jams that have occurred by location and type, or resets all of the counts back
to zero.

Purpose

Used to check the occurrence of paper jams, or to clear all counts after replacement of maintenance parts.

Method

1. Press the start key.

• The paper jam count will be displayed for each paper feed location.

2. Use the cursor left/right keys to switch between screens.

Sample display

Clear paper misfeed count U903

1st dr : 12

2nd dr : 17

3rd dr : 9

Description and Procedure

Bypass : 17

B-Resi : 15

ALL

Clear paper misfeed count U903

R-Resi : 14

Convey : 18

Eject : 9

Display Paper jam location or type Jam code

1st dr Upper roll unit*; No paper feed J-11
2nd dr Middle roll unit; No paper feed J-12
3rd dr Lower roll unit; No paper feed J-13
Bypass Bypass; No paper feed J-10
B-Resi Bypass registration J-30
R-Resi Roll unit registration J-31
Convey Paper conveying J-40
Eject Paper ejection J-50
Origin Originals J-70
ALL Clear all jam counts ———

* Optional

Clearing the count

1. Use the cursor up/down keys to select ALL.

2. Press the start key.

• The paper jam counts for all locations and types will be returned to zero.

Completion

Press the stop/clear key.

Origin : 20

ALL

Figure 1-4-9

1-4-39

2A7

Item No.

Description and Procedure

U904 Checking/Clearing the call for service counts

Description

Checks the total number of call for service detections, or resets the count back to zero.

Purpose

Used to check the occurrence of call for service detections, or to clear the count after replacement of
maintenance parts.

Method

Press the start key.

• The call for service detection count will be displayed for each code.

Clearing the count

• When you want to clear the count for only a specific call for service code

1. Use the cursor left/right keys to switch between screens.

Sample display

Clear service call count U904

C0110 : 4

C0210 : 0

C0220 : 2

C0310 : 0

ALL

Clear service call count U904

C6220 : 3

C6400 : 0

C7101 : 1

Figure 1-4-10

2. Use the cursor up/down keys to select the call for service code that you want to clear the count for.

3. Press the start key.

• The count for the selected call for service code will be returned to zero.

• When you want to clear the count for all call for service codes.

1. Use the cursor up/down keys to select “ALL”.

2. Press the start key.

• The count for all call for service codes will be returned to zero.

Completion

Press the stop/clear key.

C7200 : 0

ALL

1-4-40

2A7

Item No.

U908 Checking/Clearing the total count

Description

Displays and clears the total count value.

Purpose

Used to check the timing of the standard replacement of maintenance parts.

Method

Press the start key.

• The current total count will be displayed.

Clearing the count

1. Use the numeric keys to enter “0”.

2. Press the start key to clear the total count.

• If you want to cancel the operation to clear the total count, press the stop/clear key.

Completion

Press the stop/clear key.

U916 Clearing all counts

Description

Clears all related counts.

Purpose

Used during a full maintenance operation.

Method

1. Press the start key.

2. Use the cursor up/down keys to select “Action”. If you want to cancel the operation to clear all counts,
select “Cancel”.

3. Press the start key.

• The values for the counts shown below will all be cleared and the screen for selecting a maintenance item

No. will be displayed again.

Description and Procedure

Maintenance Item No. Type of count

U251 Maintenance count
U901 Total count by paper source
U903 Paper jam count
U904 Call for service count
U908 Total count
U991 Scan count

U991 Checking/Clearing the scan count

Description

Displays and clears the scan count value.

Purpose

Used to check the timing of the standard replacement of maintenance parts.

Method

Press the start key.

• The current scan count will be displayed.

Clearing the count

1. Use the numeric keys to enter “0”.

2. Press the start key to clear the scan count.

• If you want to cancel the operation to clear the scan count, press the stop/clear key.

Completion

Press the stop/clear key.

1-4-41

2A7

Item No.

U993 Printing out all PGs

Description

Selects and prints out all PG patterns generated at the machine.

Purpose

Used when performing adjustments related to printing images in order to check the status of the ASIC on the
IPU PCB, using a PG pattern that is generated without the need to scan an original.

Method

1. Press the start key.

Display Setting item Setting range

1: HDC 2: MCP 3: MIP Type of ASIC 1 (Check LPH problems)

Pattern Type of PG pattern 0 to 30
Exposure Printout density 0 to 60

2. Use the cursor up/down keys to select “1: HDC 2: MCP 3: MIP”.

3. Use the cursor left/right keys to change the setting and, thereby, select the desired mode.

4. Use the cursor up/down keys to select “Pattern”.

5. Use the cursor left/right keys to change the setting and, thereby, select the desired PG pattern.

6. Use the cursor up/down keys to select “Exposure”.

7. Use the cursor left/right keys to change the setting and, thereby, select the desired PG density.

• Raising the setting will increase the contrast of the image while lowering it will decrease the contrast.

8. Press the interrupt key. The test copy screen will be displayed.

9. Press the start key. The selected PG pattern will be printed out.

Completion

Press the stop/clear key.

U999 Checking the memory

Description

Checks the memory capacity of the DIMM chips on the IPU PCB.

Purpose

Used to check the memory capacity of the DIMM chips that are installed on the IPU PCB as well as to check if
they are functioning correctly.

Method

1. Press the start key.

2. Press the start key again.

• The DIMM chips will be checked and then the total memory capacity of those chips displayed. If “0” is
displayed, there are either no DIMM chips installed or they are not functioning correctly.

Completion

Press the stop/clear key.

Description and Procedure

2 (Check DIMM problems)
3 (Check IPU PCB problems)

1-4-42

2A7

1-5-1 Paper misfeed detection

(1) Paper misfeed indication

When a paper jam occurs, the copier immediately stops copying and the operation panel shows a paper misfeed message.
Paper jam counts sorted by the detecting conditions can be checked by maintenance item U903.
To remove paper, open the front covers and take out roll units, or open the detachable unit or original cover.
To reset the paper misfeed detection, open and close the front covers, detachable unit, lower right cover, eject cover or
original cover to turn the safety switches 5 & 6, 1 & 2, 4, 3, or 7 & 8 off and on, respectively.

JAM code Description Messages

J-10 No paper feed from the bypass table

J-11 No paper feed from the upper roll unit*

J-12 No paper feed from the middle roll unit

J-13 No paper feed from the lower roll unit

J-30 Bypass table registration jam

J-31 Roll unit registration jam

Paper misfeed
Remove paper

Paper misfeed
Open front cover

Paper misfeed
Open front cover

Paper misfeed
Open front cover

Paper misfeed
Remove paper

Paper misfeed
Open front cover

J-40 Paper jam in the paper conveying section

J-50 Paper jam in the eject section

J-70 Paper jam in the original feed section

* Optional

Paper misfeed
Pull out
Original table

Paper misfeed
Press “Cut paper” key

Set original again

Remove original

1-5-1

2A7

(2) Paper misfeed detection conditions

RSW

PSSW

1, 2, 3, 4, 5

OTSW

BTSW

PFSW-U

FCL-U

PFSW-M

OLSW

ESW

BRSW

BRCL

RWCL-U

RWCL-M

FCL-M

RWCL-L

PFSW-L

FCL-L

Figure 1-5-1 Paper misfeed detection

1-5-2

2A7

1. No paper feed from the bypass table: J-10

When the bypass timing switch (BTSW) does not turn on within 1600 ms of the bypass registration switch (BRSW) turning
on.

BRSW

BTSW

1600 ms

Off

On

Off

On

Timing chart 1-5-1

When the bypass registration switch (BRSW) is on at turning on of the main switch or opening/closing of the detachable
unit.

2. No paper feed from the upper roll unit: J-11

When copying starts, the registration switch (RSW) does not turn on within 4500 ms of the upper feed clutch (FCL-U)
turning on (primary paper feed).

FCL-U

RSW

4500 ms

Off

On

Off

On

Timing chart 1-5-2

When the upper paper feed switch (PFSW-U) does not turn off within 6 s of the upper roll winding clutch (RWCL-U) turning
on.

Off

PFSW-U

RWCL-U

6 s

On

Off

On

Timing chart 1-5-3

3. No paper feed from the middle roll unit: J-12

When copying starts, the paper size switches (PSSW 1 to 5) do not turn on within 4200 ms of the middle feed clutch (FCL­M) turning on (primary paper feed).

FCL-M

PSSW (1 – 5)

4200 ms

Off

On

Off

On

Timing chart 1-5-4

When the registration switch (RSW) does not turn on within 4700 ms of the paper size switches (PSSW 1 to 5) turning on.

PSSW (1 – 5)

RSW

4700 ms

Off

On

Off

On

Timing chart 1-5-5

1-5-3

2A7

When the middle paper feed switch (PFSW-M) does not turn off within 13 s of the middle roll winding clutch (RWCL-M)
turning on.

Off

PFSW-M

RWCL-M

13 s

On

Off

On

Timing chart 1-5-6

4. No paper feed from the lower paper roll unit: J-13

When copying starts, the paper size switches (PSSW 1 to 5) do not turn on within 6600 ms of the lower feed clutch
(FCL-U) turning on (primary paper feed).

FCL-L

PSSW (1 – 5)

6600 ms

Off

On

Off

On

Timing chart 1-5-7

When the registration switch (RSW) does not turn on within 4700 ms of the paper size switches (PSSW 1 to 5) turning on.

PSSW (1 – 5)

RSW

4700 ms

Off

On

Off

On

Timing chart 1-5-8

When the lower paper feed switch (PFSW-L) does not turn off within 21 s of the lower roll winding clutch (RWCL-L) turning
on.

Off

PFSW-L

RWCL-L

21 s

On

Off

On

Timing chart 1-5-9

5. Bypass table registration jam: J-30

When paper is fed from the bypass table, the bypass timing switch (BTSW) does not turn off when the paper has been fed
300 mm beyond the maximum copy length*.
* The maximum length allowed for copying is 6000 mm when the standard size of memory is mounted.

6. Roll unit registration jam: J-31

When the roll registration clutch (RRCL) does not turn on within 15 s of the secondary paper feed starting.

1-5-4

2A7

7. Paper jam in the paper conveying section: J-40

When the eject switch (ESW) does not turn on within 6100 ms of the roll registration clutch (RRCL) turning on (secondary
paper feed).

RRCL

ESW

6100 ms

Off

On

Off

On

Timing chart 1-5-10

When the registration switch (RSW) does not turn off within 2300 of the cutter motor (CM) turning off.

CM

RSW

2300 ms

Off

On

Off

On

Timing chart 1-5-11

When the cutter stops during cutting operation and cutting has not been successfully completed.

8. Paper jam in the eject section: J-50

After the paper has been cut, the eject switch (ESW) does not turn off within 6200 ms of the registration switch (RSW)
turning off.

RSW

ESW

6200 ms

Off

On

Off

On

Timing chart 1-5-12

When the eject switch (ESW) does not turn off within 6500 ms of the bypass timing switch (BTSW) turning off.

BTSW

ESW

6500 ms

Off

On

Off

On

Timing chart 1-5-13

When the eject switch (ESW) is on at the main switch turning on or opening/closing of the detachable unit.

1-5-5

2A7

9. Paper jam in the original feed section: J-70

When the original trailing edge switch (OTSW) does not turn on within 3 s of the original motor (OM) turning on (primary
original feed).

Start of the primary original feed

OM

OLSW

OTSW

3 s

Off

On

Off

On

Off

On

Timing chart 1-5-14

When the original trailing edge switch (OTSW) is off at the original motor (OM) turning on (secondary original feed).

When the original trailing edge switch (OTSW) does not turn off within 3500 ms of the original leading edge switch (OLSW)
turning off.

Start of the secondary original feed

OM

OLSW

OTSW

3500 ms

Off

On

Off

On

Off

On

Timing chart 1-5-15

When the original trailing edge switch (OTSW) is on at the scan stop key being pressed.

When the original leading edge switch (OLSW) does not turn off if the original has been fed beyond the maximum length
allowed for long copies.

In the original return mode, the original trailing edge switch (OTSW) does not turn off if the time required to feed that original
elapses.

1-5-6

(3) Paper misfeeds

2A7

Problem

(J-10)
No paper feed from
the bypass table

(J-11)
No paper feed from
the upper roll unit*

Causes/check procedures

A piece of paper torn from copy
paper is caught around the bypass
feed roller or upper or lower
bypass roller.

Defective bypass timing switch.

Defective bypass registration
switch.

Wrong paper.

A piece of paper torn from copy
paper is left along the paper con­veying path between the upper roll
unit and the roll registration roller.

Guide plates or other components
along the paper conveying path
between the upper roll unit and the
roll registration roller.

The roll paper feed upper roller of
the upper roll unit is dirty with
paper powder.

The roll paper feed upper roller of
the upper roll unit is deformed or
worn.

Corrective measures

Check and remove it, if any.

If CN3-11 on the engine main PCB remains the same
when the bypass timing switch is turned on and off,
replace the bypass timing switch.

If CN3-12 on the engine main PCB remains the same
when the bypass registration switch is turned on and off,
replace the bypass registration switch.

Check and if the paper is extremely curled or inappro­priate for copying, change it.

Check and remove it, if any.

Check and remedy or replace any deformed parts.

Check the roll paper feed upper roller and, if it is dirty,
clean it with isopropyl alcohol.

Check and replace the roll paper feed upper roller if
necessary.

(J-12)
No paper feed from
the middle roll unit

Broken registration switch
actuator.

Defective registration switch.

Defective upper paper feed
switch*.

Electrical problem with the upper
roll winding clutch*.

Electrical problem with the upper
feed clutch*.

Electrical problem with the roll
registration clutch.

Wrong paper.

A piece of paper torn from copy
paper is left along the paper con­veying path between the middle
roll unit and the roll registration
roller.

Check and, if the actuator is broken, replace the registra­tion switch.

If CN3-7 on the engine main PCB remains the same when
the registration switch is turned on and off, replace the
registration switch.

If CN16-1 on the engine main PCB remains the same
when the upper paper feed switch is turned on and off,
replace the upper paper feed switch.

See page 1-5-29.

See page 1-5-30.

See page 1-5-31.

Check and if the paper is extremely curled or inappro­priate for copying, change it.

Check and remove it, if any.

1-5-7

2A7

(J-12)
No paper feed from
the middle roll unit

Causes/check procedures Corrective measuresProblem

Guide plates or other components
along the paper conveying path
between the middle roll unit and
the roll registration roller.

Check and remedy or replace any deformed parts.

(J-13)
No paper feed from
the lower roll unit

The roll paper feed upper roller of
the middle roll unit is dirty with
paper powder.

The roll paper feed upper roller of
the middle roll unit is deformed or
worn.

Broken registration switch
actuator.

Defective registration switch.

Defective middle paper feed
switch.

Electrical problem with the middle
roll winding clutch.

Electrical problem with the middle
feed clutch.

Electrical problem with the roll
registration clutch.

Wrong paper.

A piece of paper torn from copy
paper is left along the paper
conveying path between the lower
roll unit and the roll registration
roller.

Check the roll paper feed upper roller and, if it is dirty,
clean it with isopropyl alcohol.

Check and replace the roll paper feed upper roller if
necessary.

Check and, if the actuator is broken, replace the
registration switch.

If CN3-7 on the engine main PCB remains the same when
the registration switch is turned on and off, replace the
registration switch.

If CN16-2 on the engine main PCB remains the same
when the lower paper feed switch is turned on and off,
replace the middle paper feed switch.

See page 1-5-30.

See page 1-5-30.

See page 1-5-31.

Check and if the paper is extremely curled or
inappropriate for copying, change it.

Check and remove it, if any.

1-5-8

Guide plates or other components
along the paper conveying path
between the lower roll unit and the
roll registration roller.

The roll paper feed upper roller of
the lower roll unit is dirty with
paper powder.

The roll paper feed upper roller of
the lower roll unit is deformed or
worn.

Broken registration switch
actuator.

Defective registration switch.

Defective lower paper feed switch.

Electrical problem with the lower
roll winding clutch.

Check and remedy or replace any deformed parts.

Check the roll paper feed upper roller and, if it is dirty,
clean it with isopropyl alcohol.

Check and replace the roll paper feed upper roller if
necessary.

Check and, if the actuator is broken, replace the
registration switch.

If CN3-7 on the engine main PCB remains the same when
the registration switch is turned on and off, replace the
registration switch.

If CN16-3 on the engine main PCB remains the same
when the lower paper feed switch is turned on and off,
replace the lower paper feed switch.

See page 1-5-30.