Mita-Kyocera KM-6230 Service Manual

SERVICE

MANUAL

Published in Jun.’00

842A0110

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

1-1-2 Parts names and their functions........................................................................................................... 1-1-4

(1) Copier ............................................................................................................................................. 1-1-4

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

1-1-3 Machine cross section.......................................................................................................................... 1-1-6

1-1-4 Drive system ........................................................................................................................................ 1-1-7

(1) Drive system 1 (optical section) ...................................................................................................... 1-1-7

(2) Drive system 2 (paper feed motor drive train) ................................................................................ 1-1-8

(3) Drive system 3 (image forming motor drive train) ........................................................................... 1-1-9

(4) Drive system 4 (drive motor drive train) ........................................................................................ 1-1-10

(5) Drive system 5 (large paper deck) ................................................................................................ 1-1-11

(6) Drive system 6 (duplex section) ................................................................................................... 1-1-12

(7) Drive system 7 (SRDF) ................................................................................................................. 1-1-13

1-2 Handling Precautions

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

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

1-3 Installation

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

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

1-3-2 Setting initial copy modes .................................................................................................................. 1-3-15

1-3-3 Copier management........................................................................................................................... 1-3-16

(1) Expecting a copier management item .......................................................................................... 1-3-16

(2) Department management ............................................................................................................. 1-3-17

(3) Week timer ................................................................................................................................... 1-3-17

(4) Copy default ................................................................................................................................. 1-3-18

(5) Machine default ............................................................................................................................ 1-3-20

(6) Language ...................................................................................................................................... 1-3-20

1-3-4 Installing the finisher (option) ............................................................................................................. 1-3-21

1-3-5 Installing the booklet stitcher (option)................................................................................................. 1-3-26

1-3-6 Installing the side deck (option).......................................................................................................... 1-3-31

1-3-7 Installing the key counter (option) ...................................................................................................... 1-3-35

1-3-8 Installing the cassette heater (option) ................................................................................................ 1-3-37

1-3-9 Installing the MMD host monitoring system device (option) ............................................................... 1-3-38

2A0

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 ............................................................................................................ 1-4-3

(3) Contents of maintenance mode items ............................................................................................ 1-4-7

1-5 Troubleshooting

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

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

(2) Paper misfeed detection conditions ................................................................................................ 1-5-3

(3) Paper misfeeds ............................................................................................................................. 1-5-13

1-5-2 Self-diagnosis..................................................................................................................................... 1-5-22

(1) Self-diagnostic function ................................................................................................................ 1-5-22

(2) Self-diagnostic codes ................................................................................................................... 1-5-22

1-5-3 Image formation problems ................................................................................................................. 1-5-35

(1) No image appears (entirely white). ............................................................................................... 1-5-37

(2) No image appears (entirely black). ............................................................................................... 1-5-37

(3) Image is too light. ......................................................................................................................... 1-5-38

1-1-1

2A0

(4) Background is visible. ................................................................................................................... 1-5-38

(5) A white line appears longitudinally. .............................................................................................. 1-5-38

(6) A black line appears longitudinally. .............................................................................................. 1-5-39

(7) A black line appears laterally. ....................................................................................................... 1-5-39

(8) One side of the copy image is darker than the other. ................................................................... 1-5-39

(9) Black dots appear on the image. .................................................................................................. 1-5-40

(10) Image is blurred............................................................................................................................ 1-5-40

(11) The leading edge of the image is consistently misaligned with the original. ................................ 1-5-40

(12) The leading edge of the image is sporadically misaligned with the original. ................................ 1-5-41

(13) Paper creases. ............................................................................................................................. 1-5-41

(14) Offset occurs. ............................................................................................................................... 1-5-41

(15) Image is partly missing................................................................................................................. 1-5-42

(16) Fixing is poor. ............................................................................................................................... 1-5-42

(17) Image is out of focus. ................................................................................................................... 1-5-42

(18) Image center does not align with the original center. ................................................................... 1-5-43

(19) Image is not square...................................................................................................................... 1-5-43

(20) Image contrast is low (carrier scattering)...................................................................................... 1-5-43

(21) When the large paper deck is used, the center of the original image

and that of the copy image do not align........................................................................................ 1-5-43

(22) There is a regular error between the centers of the original and copy image

when the SRDF is used................................................................................................................ 1-5-44

(23) There is a regular error between the leading edges of

the original and copy image when the SRDF is used................................................................... 1-5-44

1-5-4 Electrical problems ............................................................................................................................. 1-5-45

• Copier

(1) The machine does not operate when the main switch is turned on. ............................................. 1-5-45

(2) The image forming motor does not operate (C200). .................................................................... 1-5-45

(3) The drive motor does not operate (C210). ................................................................................... 1-5-45

(4) Paper feed motor does not operate (C220). ................................................................................. 1-5-45

(5) The scanner motor does not operate. .......................................................................................... 1-5-46

(6) The duplex fan motor does not operate. ....................................................................................... 1-5-46

(7) The optical section motor does not operate. ................................................................................ 1-5-46

(8) The cooling fan motor does not operate. ...................................................................................... 1-5-46

(9) The fixing unit fan motor does not operate. .................................................................................. 1-5-46

(10) LSU fan motor 1 does not operate. .............................................................................................. 1-5-46

(11) LSU fan motor 2 does not operate. .............................................................................................. 1-5-47

(12) The main charger fan motor does not operate. ............................................................................ 1-5-47

(13) The eject fan motor does not operate........................................................................................... 1-5-47

(14) The upper lift motor does not operate (C242). ............................................................................. 1-5-47

(15) The lower lift motor does not operate (C243)............................................................................... 1-5-47

(16) The large paper deck right lift motor does not operate (C230)..................................................... 1-5-47

(17) The large paper deck left lift motor does not operate (C231)....................................................... 1-5-48

(18) Blow fan motor 1 does not operate............................................................................................... 1-5-48

(19) Blow fan motor 2 does not operate............................................................................................... 1-5-48

(20) The toner feed motor does not operate........................................................................................ 1-5-48

(21) The main charger cleaning motor does not operate..................................................................... 1-5-48

(22) The toner agitation motor does not operate. ................................................................................ 1-5-48

(23) The registration clutch does not operate. ..................................................................................... 1-5-49

(24) Feed clutch 1 does not operate.................................................................................................... 1-5-49

(25) Feed clutch 2 does not operate.................................................................................................... 1-5-49

(26) Feed clutch 3 does not operate.................................................................................................... 1-5-49

(27) Feed clutch 4 does not operate.................................................................................................... 1-5-49

(28) Feed clutch 5 does not operate.................................................................................................... 1-5-49

(29) The upper paper feed clutch does not operate............................................................................. 1-5-49

(30) The lower paper feed clutch does not operate. ............................................................................ 1-5-50

(31) The bypass lift clutch does not operate........................................................................................ 1-5-50

(32) The bypass paper feed clutch does not operate. ......................................................................... 1-5-50

(33) The duplex forwarding clutch does not operate............................................................................ 1-5-50

1-1-2

2A0

(34) The duplex reversing clutch does not operate.............................................................................. 1-5-50

(35) The large paper deck conveying clutch does not operate............................................................ 1-5-50

(36) Large paper deck paper feed clutch 1 does not operate.............................................................. 1-5-51

(37) Large paper deck paper feed clutch 2 does not operate.............................................................. 1-5-51

(38) The transfer charger belt release clutch does not operate........................................................... 1-5-51

(39) The duplex eject switching solenoid does not operate................................................................. 1-5-51

(40) The duplex pressure release solenoid does not operate.............................................................. 1-5-51

(41) The feedshift solenoid does not operate. ..................................................................................... 1-5-51

(42) The fixing web solenoid does not operate.................................................................................... 1-5-52

(43) The cleaning lamp does not turn on. ............................................................................................ 1-5-52

(44) The exposure lamp does not turn on............................................................................................ 1-5-52

(45) The exposure lamp does not turn off............................................................................................ 1-5-52

(46) Fixing heater M or S does not turn on (C610). ............................................................................. 1-5-52

(47) Fixing heater M or S does not turn off. ......................................................................................... 1-5-52

(48) Main charging is not performed (C510)........................................................................................ 1-5-52

(49) Transfer charging is not performed (C511). ................................................................................. 1-5-53

(50) No developing bias is output. ....................................................................................................... 1-5-53

(51) The original size is not detected................................................................................................... 1-5-53

(52) The original size is not detected correctly. ................................................................................... 1-5-53

(53) The touch panel keys do not work................................................................................................ 1-5-53

(54) The message requesting paper to be loaded is shown when paper is present

in the large paper deck. ................................................................................................................ 1-5-53

(55) The message requesting paper to be loaded is shown when paper is present

in the upper cassette. ................................................................................................................... 1-5-53

(56) The message requesting paper to be loaded is shown when paper is present

in the lower cassette..................................................................................................................... 1-5-54

(57) The message requesting paper to be loaded is shown when paper is present

on the bypass table. ..................................................................................................................... 1-5-54

(58) The size of paper in the upper cassette is not displayed correctly............................................... 1-5-54

(59) The size of paper in the lower cassette is not displayed correctly................................................ 1-5-54

(60) The size of paper on the bypass table is not displayed correctly. ................................................ 1-5-55

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

on the touch panel immediately after the main switch is turned on. ............................................. 1-5-55

(62) The message requesting covers to be closed is displayed when the front, upper right,

lower right and eject covers are closed. ....................................................................................... 1-5-56

(63) Others........................................................................................................................................... 1-5-56

• SRDF

(1) The original feed motor does not operate. .................................................................................... 1-5-57

(2) The original conveying motor does not operate. .......................................................................... 1-5-57

(3) The original feed solenoid does not operate. ............................................................................... 1-5-57

(4) The switchback feedshift solenoid does not operate. ................................................................... 1-5-57

(5) The eject feedshift solenoid does not operate. ............................................................................. 1-5-57

(6) The switchback pressure solenoid does not operate. .................................................................. 1-5-57

(7) The original feed clutch does not operate. ................................................................................... 1-5-58

(8) A message indicating cover open is displayed when the SRDF is closed correctly. .................... 1-5-58

(9) An original jams when the main switch is turned on. .................................................................... 1-5-58

1-5-5 Mechanical problems ......................................................................................................................... 1-5-59

• Copier

(1) No primary paper feed. ................................................................................................................. 1-5-59

(2) No secondary paper feed. ............................................................................................................ 1-5-59

(3) Skewed paper feed. ...................................................................................................................... 1-5-59

(4) The scanner does not travel. ........................................................................................................ 1-5-59

(5) Multiple sheets of paper are fed at one time.................................................................................. 1-5-59

(6) No refeed. ..................................................................................................................................... 1-5-59

(7) Paper jams. .................................................................................................................................. 1-5-59

(8) Toner drops on the paper conveying path. ................................................................................... 1-5-60

(9) Abnormal noise is heard. .............................................................................................................. 1-5-60

1-1-3

2A0

• SRDF

(1) No primary original feed. .............................................................................................................. 1-5-61

(2) No secondary original feed........................................................................................................... 1-5-61

(3) Originals jam................................................................................................................................. 1-5-61

1-6 Assembly and Disassembly

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

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

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

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

(1) Detaching and refitting the forwarding, upper and lower paper feed pulleys.................................. 1-6-3

(2) Detaching and refitting the bypass forwarding roller, bypass upper and

lower paper feed pulleys................................................................................................................. 1-6-6

(2-1) Detaching the bypass paper feed unit................................................................................... 1-6-6

(2-2) Detaching the bypass forwarding roller ................................................................................. 1-6-7

(2-3) Detaching the bypass upper paper feed pulley ..................................................................... 1-6-7

(2-4) Detaching the bypass lower paper feed pulley...................................................................... 1-6-8

(3) Cleaning the paper feed belts......................................................................................................... 1-6-9

(4) Detaching and refitting the deck paper feed roller and deck paper conveying roller.................... 1-6-11

(5) Detaching and refitting the upper and lower paper width switches

(For inch models only.) ................................................................................................................. 1-6-12

(6) Detaching and refitting the bypass paper width switch................................................................. 1-6-14

(7) Adjusting the center registration................................................................................................... 1-6-15

(7-1) Adjusting the position of the rack adjuster........................................................................... 1-6-15

(7-2) Adjusting the position of the center adjuster........................................................................ 1-6-16

(8) Adjustment after roller and clutch replacement ............................................................................ 1-6-17

(8-1) Adjusting the leading edge registration ............................................................................... 1-6-17

(8-2) Adjusting the leading edge registration for duplex switchback copying............................... 1-6-18

(8-3) Adjusting the center line of image printing........................................................................... 1-6-19

(8-4) Adjusting the margins for printing........................................................................................ 1-6-20

(8-5) Adjusting the amount of slack in the paper at the registration roller for drawer,

bypass and duplex feeds..................................................................................................... 1-6-21

1-6-3 Main charging section ........................................................................................................................ 1-6-22

(1) Replacing the charger wire and charger grid assembly ............................................................... 1-6-22

(2) Replacing the grid wire cleaning pad and charger wire cleaning pad .......................................... 1-6-24

1-6-4 Optical section.................................................................................................................................... 1-6-25

(1) Detaching and refitting the exposure lamp................................................................................... 1-6-25

(2) Detaching and refitting the scanner wires .................................................................................... 1-6-26

(2-1) Detaching the scanner wires ............................................................................................... 1-6-26

(2-2) Refitting the scanner wires .................................................................................................. 1-6-27

(3) Replacing the laser scanner unit .................................................................................................. 1-6-29

(4) Replacing the ISU (reference)...................................................................................................... 1-6-30

(5) Adjusting the longitudinal squareness (reference) ....................................................................... 1-6-31

(6) Adjusting scanner image lateral squareness (reference) ............................................................. 1-6-32

(6-1) Adjusting the position of the laser scanner unit................................................................... 1-6-32

(6-2) Adjusting the position of the ISU ......................................................................................... 1-6-34

(7) Adjusting magnification of the scanner in the main scanning direction ........................................ 1-6-35

(8) Adjusting magnification of the scanner in the auxiliary scanning direction................................... 1-6-36

(9) Adjusting the scanner center line ................................................................................................. 1-6-37

(10) Adjusting the scanner leading edge registration........................................................................... 1-6-38

(11) Adjusting the margins for scanning an original on the contact glass............................................ 1-6-39

1-6-5 Drum section ...................................................................................................................................... 1-6-40

(1) Detaching and refitting the drum and drum heater....................................................................... 1-6-40

(2) Detaching and refitting the front and rear drum electrode wires................................................... 1-6-42

(3) Detaching and refitting the drum heater electrodes A and B........................................................ 1-6-44

1-6-6 Developing section ............................................................................................................................. 1-6-45

(1) Adjusting the position of the magnetic brush (developing roller) (reference) ............................... 1-6-45

(2) Checking the position of the doctor blade (reference).................................................................. 1-6-46

(3) Detaching and refitting the developing filter and the upper developing seal ................................ 1-6-47

(4) Detaching and refitting the lower developing shaft and developing blade assembly ................... 1-6-48

1-1-4

2A0

1-6-7 Transfer section ................................................................................................................................. 1-6-49

(1) Detaching and refitting the transfer charger belt .......................................................................... 1-6-49

(2) Detaching and refitting the transfer roller ..................................................................................... 1-6-50

(3) Detaching and refitting the belt cleaning brush ............................................................................ 1-6-51

1-6-8 Cleaning section................................................................................................................................. 1-6-52

(1) Detaching and refitting the cleaning blade ................................................................................... 1-6-52

(2) Detaching and refitting the cleaning brush ................................................................................... 1-6-54

(3) Detaching and refitting the cleaning brush mount ........................................................................ 1-6-55

(4) Detaching and refitting the separation claw assembly ................................................................. 1-6-56

1-6-9 Fixing section ..................................................................................................................................... 1-6-57

(1) Detaching and refitting the fixing unit thermostat ......................................................................... 1-6-57

(2) Detaching and refitting the cleaning felt ....................................................................................... 1-6-58

(3) Detaching and refitting the fixing heaters M and S ....................................................................... 1-6-59

(4) Detaching and refitting the fixing unit thermistor .......................................................................... 1-6-61

(5) Detaching and refitting the lower cleaning roller ........................................................................... 1-6-62

(6) Detaching and refitting the heat roller and press roller ................................................................. 1-6-63

(7) Detaching and refitting the heat roller separation claw................................................................. 1-6-64

(8) Detaching and refitting the press roller separation claw ............................................................... 1-6-65

1-6-10 Duplex section.................................................................................................................................... 1-6-66

(1) Cleaning the duplex switchback rollers ........................................................................................ 1-6-66

(2) Adjusting the position of the duplex eject switching solenoid ....................................................... 1-6-67

(3) Setting the switchback drive ......................................................................................................... 1-6-68

1-6-11 SRDF section ..................................................................................................................................... 1-6-69

(1) Detaching and refitting the DF forwarding pulley and the DF feed pulleys................................... 1-6-69

(2) Adjusting the DF magnification ..................................................................................................... 1-6-70

(3) Adjusting the DF center line ......................................................................................................... 1-6-71

(4) Adjusting the scanning start position when the DF is used .......................................................... 1-6-72

(4-1) Adjusting the DF leading edge registration.......................................................................... 1-6-72

(4-2) Adjusting the DF traling edge registration ........................................................................... 1-6-73

(5) Adjusting the margins for scanning the original from the DF ........................................................ 1-6-74

1-6-12 Others ................................................................................................................................................ 1-6-75

(1) Detaching and refitting the drum grounding plate spring .............................................................. 1-6-75

1-7 Requirements on PCB Replacement

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

1-7-2 Replacing the main PCB ROMs ........................................................................................................... 1-7-2

1-7-3 Adjustment-free variable resisters (VR) ............................................................................................... 1-7-3

2-1 Mechanical construction

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

(1) Paper feed from the cassettes ........................................................................................................ 2-1-1

(2) Paper feed from the large paper deck ............................................................................................ 2-1-5

(2-1) Right cassette paper feed...................................................................................................... 2-1-6

(2-2) Left cassette paper feed........................................................................................................ 2-1-8

(2-3) Raising and lowering the lifts................................................................................................. 2-1-9

(2-4) Detecting the paper level..................................................................................................... 2-1-10

(3) Paper feed from the bypass table ................................................................................................. 2-1-11

2-1-2 Main charging section ........................................................................................................................ 2-1-13

2-1-3 Optical section.................................................................................................................................... 2-1-16

(1) Original scanning .......................................................................................................................... 2-1-17

(2) Image printing ............................................................................................................................... 2-1-18

2-1-4 Developing section ............................................................................................................................. 2-1-20

(1) Formation of magnetic brush ........................................................................................................ 2-1-21

(2) Toner density control .................................................................................................................... 2-1-23

(2-1) Toner empty detection by the toner sensor......................................................................... 2-1-23

(2-2) Controling the toner feed motor and toner agitation motor.................................................. 2-1-24

(2-3) Toner empty detection by the toner level sensor................................................................. 2-1-24

(2-4) Toner control level absolute humidity correction ................................................................. 2-1-24

1-1-5

2A0

2-1-5 Transfer and conveying sections ....................................................................................................... 2-1-25

2-1-6 Cleaning section................................................................................................................................. 2-1-27

2-1-7 Charge erasing section ...................................................................................................................... 2-1-28

2-1-8 Fixing section ..................................................................................................................................... 2-1-29

2-1-9 Feedshift and eject sections............................................................................................................... 2-1-31

2-1-10 Duplex section.................................................................................................................................... 2-1-32

2-1-11 SRDF ................................................................................................................................................. 2-1-35

(1) Original feed section ..................................................................................................................... 2-1-35

(1-1) Original feed timing.............................................................................................................. 2-1-36

(2) Original switchback section .......................................................................................................... 2-1-37

(2-1) Operation of original switchback.......................................................................................... 2-1-38

(3) Original conveying section ............................................................................................................ 2-1-39

(3-1) Original switchback/conveying timing.................................................................................. 2-1-40

2-2 Electrical Parts Layout

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

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

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

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

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

(5) Other electrical components ........................................................................................................... 2-2-6

(6) SRDF switches and sensors .......................................................................................................... 2-2-7

(7) SRDF motors .................................................................................................................................. 2-2-8

(8) SRDF clutches and solenoids ........................................................................................................ 2-2-9

2-3 Operation of the PCBs

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

2-3-2 Main PCB ............................................................................................................................................. 2-3-5

2-3-3 Engine PCB........................................................................................................................................ 2-3-15

2-3-4 Operation unit PCB ............................................................................................................................ 2-3-24

2-3-5 Scanner motor PCB ........................................................................................................................... 2-3-27

2-3-6 CCD PCB ........................................................................................................................................... 2-3-30

2-3-7 Inverter PCB....................................................................................................................................... 2-3-33

2-3-8 DF driver PCB .................................................................................................................................... 2-3-33

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

Timing chart No. 7 .......................................................................................................................................... 2-4-7

Timing chart No. 8 .......................................................................................................................................... 2-4-8

Timing chart No. 9 .......................................................................................................................................... 2-4-9

Timing chart No. 10 ...................................................................................................................................... 2-4-10

Chart of image adjustment procedures ........................................................................................................ 2-4-11

Maintenance parts list................................................................................................................................... 2-4-14

Periodic maintenance procedures ................................................................................................................ 2-4-15

SRDF wiring diagram ................................................................................................................................... 2-4-19

General connection diagram ........................................................................................................................ 2-4-20

1-1-6

1-1-1 Specifications

2A0

Copier

Type ............................................... Console

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

Originals .........................................Sheets and books

Maximum size: A3/11" × 17"

Original feed system ......................Fixed

2

Copy paper ....................................Cassette and duplex unit: Plain paper (64 – 80 g/m

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

2

)

)

Special paper:

Transparencies, tracing paper, colored paper and envelopes (only when used as a
printer)

Note: Use the bypass table for special paper.

Copying sizes.................................Maximum: A3/11" × 17"

1

Minimum: A6R/5

/2" × 81/2"
During duplex copying
Maximum: A3/11" × 17"

1

Minimum: A5R/5

/2" × 81/2"

Magnification ratios ........................ Manual mode: 25 – 400%, 1% increments

Auto copy mode: Fixed ratios
Metric

1:1, 1:4.00/1:2.00/1:1.41/1:1.06/1:0.75/1:0.70/1:0.50/1:0.25

Inch

1:1, 1:4.00/1:2.00/1:1.29/1:1.21/1:0.78/1:0.64/1:0.50/1:0.25

100% magnification........................Copier: ±0.8%

SRDF: ±1.5%

Enlargement/reduction ...................Copier: ±1.0%

SRDF: ±1.5%

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

1

A4/11" × 8
A4R/8
A5R/5

/2": 62 copies/min.

1

/2" × 11": 44 copies/min.

1

/2" × 81/2": 62 copies/min.
A3/11" × 17": 32 copies/min.
B4 (257 × 364 mm)/81/2" × 14": 38 copies/min.
B5: 62 copies/min.
B5R: 50 copies/min.

When the SRDF is used (at 100% magnification):

1

A4/11" × 8

First copy time................................ 3.6 s or less (A4/11" × 8

/2": 62 copies/min.

1

/2", 100% magnification, upper cassette, manual copy

density control)

Warm-up time.................................360 s or less (room temperature 20°C/68°F, 65%RH)

With preheat, switchable between 90 s and 30 s (room temperature 20°C/68°F,
65%RH)

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

Capacity:

Cassette (two cassettes): 550 sheets
Large paper deck: 3000 sheets

Manual feed
Capacity:

Bypass: 100 sheets

Multiple copying .............................1 – 999 copies

Photoconductor ..............................a-Si (film thickness 30 µm, drum diameter 84 mm)

Charging system ............................ Single positive corona charging, 900 µA

Recording system ..........................Semiconductor laser

Developing system.........................Dry, reverse developing (double magnet roller)

Developer: 2-component, ferrite carrier and N32T black toner
Density control: Developer density detection

Toner replenishing: Automatic from a toner hopper

Transfer system .............................Transfer belt, approximately 1.2 to 1.3 kV (rated current: 50 µA)

Separation system .........................Transfer belt and separation claws

1-1

1-1-1

1-1

2A0

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

Heat source:

Halogen heaters (main 970 W for 120 V models/1350 W for 230 V models,

sub 270 W for 120V models/380 W for 230 V models)
Control temperature: 185°C/365°F (at normal ambient temperature)
Abnormally high temperature protection devices: 180°C/356°F thermostats
Fixing pressure: 80 N

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

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

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

Bitmap memory ..............................64 MB (standard)

Image storage memory .................. 8.5 GB (standard)

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

Light source ...................................Inert gas lamp (24 W)

Dimensions ....................................685 (W) × 795 (D) × 1170 (H) mm

Weight ............................................220 kg/440 lbs

Floor requirements .........................1210 mm (W) × 795 (D) mm

Functions........................................ (1) Self-diagnostics

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

Power consumption........................1560 W (max.) for 120 V models

Options........................................... Side deck, finisher, mailbox, key counter, key card (120 V models only), booklet

15

/16" (W) × 315/16" (D) × 461/16" (H)

26

5

/8" (W) × 315/16" (D)

47

(2) Preheat
(3) Automatic copy density control
(4) Original size detection
(5) Automatic paper selection
(6) Auto selection mode
(7) Automatic magnification selection
(8) Enlargement/reduction copy

(9) Fixed ratio selection
(10) Size zoom mode
(1 1) XY zoom mode
(12) Photo mode
(13) Duplex copy
(14) Margin copy
(15) Print page numbers function
(16) Split copy
(17) Border erasing
(18) Sheet copy
(19) Transparency backing sheet function
(20) Presentation mode
(21) Form overlay
(22) Combine copy
(23) Booklet copy mode
(24) Booklet + cover copy
(25) Sort copy
(26) Invert copy
(27) Mirror image mode
(28) Program copy
(29) Setting change mode
(30) Job build mode
(31) Job reservation function
(32) Department control
(33) Weekly timer
(34) Language selection

220 – 240 V AC, 50 Hz, 6.5 A (ave.), 8.5 A (max.)
2040 W (max.) for 230/240 V models
stitcher, MMD host monitoring system, print/scan system and tandem copy kit.

1-1-2

SRDF

Original feed system ......................Automatic feed

Originals .........................................Sheets

Original weights .............................Single-sided original mode: 35 – 160 g/m

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

2

2

Original paper ................................Plain paper, thermal paper, art paper and colored paper

1

Original sizes..................................A3 – A5R, folio/11" × 17" – 5

No. of originals ............................... Up to 70 sheets (A3, B4, folio, 11" × 17", 8

Up to 100 sheets (up to A4/11" × 8

/2" × 81/2"

1

/2")

1

/2" × 14")

Up to 30 sheets in the auto selection mode
Art or thermal paper must be fed individually.

Power source ................................. Electrically connected to the copier

2A0

1-1

1-1-3

2A0

1-1-2 Parts names and their functions

1-1

(1) Copier

3

2

1

@

#

)

‹
¤

⁄

0

!

9

4
6

5

^
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°
7

8

‚

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*

&

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‡

1 Front cover
2 Operation panel
3 Original size indicator lines
4 Contact glass
5 Operation section right cover
6 Original tray
7 Upper right cover
8 Lower right cover
9 Large paper deck
0 Upper cassette
! Lower cassette
@ Width guide
# Length guide

1-1-4

(

flfi

$ Bypass table
% Support guide
^ Insert guides
& Paper feed section knob
* Paper conveying section
( Paper conveying section release lever
) Fixing unit
⁄ Fixing knob
¤ Total counter
‹ Scanner counter
› Instruction handbook holder
fi Duplex unit
fl Duplex cover

Figure 1-1-1

‡ Re-feeding section
— Handles for transport

· Ejection cover
‚ Main switch
ΠWaste toner tank cover
„ Waste toner tank
´ SRDF
‰ Original table
ˇ Original insert guides
Á Original set indicator
¨ DF opening/closing lever
ˆ Original ejection cover
Ø DF original reversing cover
” Ejection guide

(2) Operation panel

2A0

Metric

Inch

41 5(6 ! @ # ^&

2

1

4

A

A

A

A

A

7

0

3

6

5

9

8

/

C

*%$809732

41 5(6 ! @ # ^&

Data Error

Punch

1
2

14

8

1
2

11

8

Staple

Sort

A

A

1
2

14

8

A

1
2

11

8

A

A

A

Sort

Group

Doc

.

Job

Mgmt

.

Build

Copier

/

Program

Printer

/

Scanner

Manual

Add Job

2

1

4

5

7

8

Stop/

0

Clear

Reset

3

Proof Copy

6

Energy

9

Saver

Interrupt

Start

1-1

1 Punch mode key (indicator)
2 Staple sort key (indicator)
3 Sort mode key (indicator)
4 Brightness adjustment control
5 Job build key
6 Document management key
7 Program key
8 Copier/printer/scanner key
9 Manual key (indicator)
0 Add job key (indicator)

*%$809732

Figure 1-1-2

! Touch panel
@ Numeric keys
# Reset key
$ Stop/clear key
% Start key (indicator)
^ Proof copy key (indicator)
& Energy saver key (indicator)
* Interrupt key
( Data/error indicator

1-1-5

2A0

1-1-3 Machine cross section

1-1

3
8

6

9

0

!

2

4

7

5

1

1-1-6

Figure 1-1-3 Machine cross section

1 Paper feed section
2 Main charging section
3 Optical section
4 Developing section
5 Transfer and paper conveying section
6 Cleaning section

Light path
Paper and original path

7 Charge erasing section
8 Fixing section
9 Feedshift and eject section
0 Duplex section
! SRDF

1-1-4 Drive system

2A0

(1) Drive system 1 (optical section)

6

6

Figure 1-1-4

1 Scanner motor pulley
2 Scanner drive belt
3 Scanner drive pulley
4 Scanner wire drum
5 Scanner wire
6 Scanner wire pulley

5

3

4

1-1

6

1

2

1-1-7

2A0

(2) Drive system 2 (paper feed motor drive train)

1-1

›

°

Á

‡

(

fl

‚

Œ

·

*

fi

⁄

7

„

6

)

ˇ

¤

‹

1

2

3

4

5

‰

´

8

9

0
!

@

1 Idle gear 20
2 Feed gear 22/32
3 Feed drive belt
4 Feed gear 22/32
5 Idle gear 20
6 Upper paper feed clutch gear
7 Idle sub gear 18
8 Feed clutch 4 gear
9 Idle gear 26
0 Paper feed gear 16
! Toner roller gear
@ Feed clutch 5 gear
# Paper feed gear 16
$ Toner roller gear
% Idle sub gear 18
^ Lower paper feed clutch gear
& Idle gear 40
* Idle gear 24

&

^

Figure 1-1-5

( Gear 42/32
) Feed clutch 2 gear
⁄ Gear 38T
¤ Gear 35
‹ Gear 29
› Idle gear 29
fi Idle gear 30
fl Feed gear 55/45
‡ Paper feed motor gear
— Gear 42/32

· Paper feed drive belt
‚ Tension pulley 20
ΠTension pulley 20
„ Tension pulley 20
´ Gear 42/32
‰ Feed clutch 3 gear
ˇ Tension pulley 20
Á Idle pulley 20

#

%

$

1-1-8

(3) Drive system 3 (image forming motor drive train)

6

4

1

2

3

5

7

2A0

1-1

8

9

0

!

1 Drum
2 Drum gear 60/54
3 Drum pulley 26/26
4 Idle pulley
5 Developing gear 30
6 Developing idle gear 27
7 Drum drive belt
8 Idle pulley 24/72
9 Drum idle gear 45
0 Image forming motor gear
! Gear 53/44/33

„

Œ

‚

‡

·

@ Developing spiral gear
# Bypass clutch gear
$ Gear 18
% Idle gear 20
^ Idle gear 20
& Idle gear 20
* Clutch gear 26
( Clutch gear 26
) Clutch gear 26
⁄ Bypass clutch gear
¤ Paper feed pulley B gear

fi

°

fl

›

Figure 1-1-6

‹

¤

⁄

)

@

#

$

%

^

&

(

*

‹ Idle gear 30/15
› Registration upper gear 16
fi Gear 18
fl Feed clutch 1 gear
‡ Paddle A gear
— Idle gear 27

· Gear 18
‚ Registration upper gear 16
ΠRegistration clutch gear
„ Fixing drive gear

1 Developing gear 27
2 Main unit mixing gear 35
3 Toner gear 34
4 Paddle idle gear
5 Developing left spiral gear

4

789!

@

0

5

3

Figure 1-1-7 Developing section

6 Developing rear gear 25
7 Developing idle gear 27/36
8 Developing joint gear
9 Developing idle gear
0 Developing idle lower gear

2

6

#

1

! Developing upper gear
@ Developing lower gear
# Sub unit agitation gear 28

1-1-9

1-1

2A0

(4) Drive system 4 (drive motor drive train)

ˆ

Ø

Ó

Ô

Ç



◊

˛

Ò

ı

¸

Ú

¯

˝

”

Î
Ï

¨

Í

Á

˜

1

Â

2

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3

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¿

¡

4

5

Å

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™

6

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7

8

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9

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)

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#

∞

fi

$

%

›

^

‹

&

*

¤

§

1 Oil roller gear 16
2 Heat roller
3 Heat roller gear
4 Fixing joint gear 36
5 Developing joint gear
6 Idle gear 22
7 Fixing drive gear 36
8 Idle gear 25
9 Fixing idle gear 20T
0 Cleaning drive gear
! Toner supply gear
@ Feedshift gear 21
# Spiral roller gear 19
$ Blade thrust gear 36
% Oil supply roller gear 22
^ Drum
& Drum gear 60/54
* Transfer charger belt release clutch gear
( Toner supply gear
) Loop gear 18
⁄ Idle gear 22
¤ Agitation gear 20
‹ Transfer belt

¶

Figure 1-1-8

› Transfer belt drive roller
fi Idle gear 22
fl Fulcrum gear
‡ Idle gear 40
— Developing drive gear 45

· Oil roller gear
‚ Duplex gear 44
ΠIdle pulley 31/42
„ Developing gear 20
´ Motor idle gear 45
‰ Drive motor gear
ˇ Motor idle gear 56/25
Á Gear 38T
¨ Fixing eject joint gear
ˆ Eject joint gear
Ø Fixing eject joint gear
” Developing gear 20
Å Idle gear 28
Í Oil roller gear 16
Î Gear 30
Ï Gear 19
˝ Fixing eject joint gear
Ó Idle gear 40

Ô Idle gear 28
Æ Eject pulley 24
Ò Switchback drive belt
Ú Forwarding pulley
¸ Paper conveying belt pulley
˛ SB gear 19
Ç Feedshift pulley 22
– Pulley 16
ı Pulley 20
˜ Paper conveying belt pulley
 Pulley 24
¯ Duplex paper conveying belt
˘ Idle gear 40
¿ SB gear 24
¡ Gear 32
™ Gear 36
£ Idle gear 30
¢ Gear 31

∞ Cleaning drive belt

§ Pulley 36
¶ Idle pulley 21

1-1-10

(5) Drive system 5 (large paper deck)

2A0

7

8

3

1

5

2

1 Pulse gear
2 Gear 1.0-24
3 Lift pulley
4 Left lift belt assembly
5 Right lift belt assembly
6 Large paper deck lift motor gear
7 Large paper deck paper feed clutch 2 gear
8 Gear 18
9 Gear 24
0 Gear 18
! Idle gear 31
@ Gear 33
# Gear 18

!@#$%)⁄

9

6

^

0

&

6

Figure 1-1-9

$ Gear 28
% Idle gear 19
^ Gear 20
& Gear 18
* Gear 24
( Gear 18
) Gear 14
⁄ Gear 14
¤ Large paper deck paper feed clutch 1 gear
‹ Paper feed belt pulley
› Paper feed belt
fi Paper feed belt pulley
fl Large paper deck conveying clutch gear

¤

*(

2

3

4

1

‹

›

fi

1-1

fl

1-1-11

2A0

(6) Drive system 6 (duplex section)

1-1

1

3

2

^

9

0

&

!

@

5

8

#

6

7%$

Figure 1-1-10

1 Duplex joint gear
2 Clutch gear 26
3 Paper conveying pulley 40
4 Paper conveying drive belt
5 Paper conveying tension pulley
6 Paper conveying pulley 20
7 Paper conveying pulley 20
8 Duplex registration gear 20/30
9 Clutch gear 26

7

4

0 Front transfer drive gear
! Gear 22
@ Gear 18
# Gear 17
$ Gear 40
% Duplex forwarding clutch gear
^ Gear 40
& Duplex reversing clutch gear

1-1-12

(7) Drive system 7 (SRDF)

2A0

6

1

Figure 1-1-11 SRDF (inside rear of machine)

1 Original feed motor pulley
2 Pulley 35/22/22
3 Idle gear 26
4 Original feed clutch gear
5 DF original feed pulley 18
6 DF forwarding pulley 18
7 Tension pulley
8 Original feed drive belt
9 DF forwarding belt

9

7

5

43

#

@

!

0

8

2

$

&

As viewed from machine rear

0 DF registration pulley 28/18
! Idle gear 15
@ Idle gear 20
# Switchback gear 18
$ DF registration drive belt
% Gear 22/35
^ Original conveying motor pulley
& Gear 28
* Original conveying drive belt 1

1-1

^

*

%

8

7

6

5

9

0

1

4

!

Figure 1-1-12 SRDF (inside front of machine)

1 Lower original conveying pulley 25/18
2 Gear 18/25
3 Eject gear 18
4 Middle original conveying pulley 18
5 Upper original conveying pulley 18
6 JAM release gear 24

3

2

As viewed from machine front

7 Joint gear 14
8 JAM release gear 14
9 Tension pulley
0 Eject drive belt
! Conveying drive belt 2

1-1-13

1-2-1 Drum

Note the following when handling or storing the drum.

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

• Keep the drum at an ambient temperature between –20°C/–4°F and 40°C/104°F and at a relative humidity not higher
than 85% RH. Avoid abrupt changes in temperature and humidity.

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

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

• If the machine is left open for more than 5 minutes for maintenance, remove the drum and store it in the drum storage
bag (Part No. 78369020).

1-2-2 Developer and toner

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

2A0

1-2

1-2-1

1-3-1 Unpacking and installation

(1) Installation procedure

Start

Unpack.

2A0

Remove the tapes.

Remove the pins holding light source units 1 and 2.

Remove the cleaning assembly retainers.

Set the cleaning assembly.

Load developer.

Install the upper developing seal.

Fitl the belt cleaning spacers.

Adjust the fixing pressure.

1-31-3

Carry out initial developer setting.

(maintenance item U130)

Apply toner to the cleaning blade.

(maintenance item U160)

Exit maintenance mode.

Set the cleaning blade.

Load toner.

Install the original tray*.

Make test copies.

Completion of the machine installation.

Connect the power cord.

*For inch models only.

1-3-1

2A0

Unpack.

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*(

›fi

%

2

5

0

8

1-3

°

fl

‹

‡

6

@

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3

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4

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⁄

1

3

Figure 1-3-1 Unpacking

9

¤

7

1-3-2

1 Copier
2 Waste toner tanks
3 Bottom pad
4 Right-top pad
5 Left-top pad
6 Skid
7 Inner frame
8 Top case
9 Outer case
0 Tank spacer
! Front transfer spacer
@ Rear transfer spacer
# Upper developing seal
$ Belt cleaning spacers
% Plastic bag
^ Paper labels

& Indication label
* Cassette size labels
( Screws (TP-A bronze, M4 × 10)
) Hinge joints
⁄ Machine cover
¤ Bar code labels
‹ Plastic bag
› Instruction handbook
fi Business reply mail*
fl Original tray*
‡ Plastic bag*

° Accessories case*

· Power code*
*1: Inch models only.
*2: Metric models only.

1

1

1

1

2

Remove the tapes.

1. Remove the tapes holding the SRDF.

2. Remove the tape holding the front cover.

3. Remove the tape holding the right cover.

4. Remove the tapes holding the large paper deck
and cassettes.

5. Remove the tape holding the bypass table.

6. Remove the tapes holding the power cord.*
*Inch models only.

2A0

1-3

Power cord

Figure 1-3-2

7. Draw out the upper cassette and remove the
tapes holding the cassette lift and pull out the
upper developing seal.

Remove the pins holding light source units 1 and 2.

1. Remove the tapes with the two pins holding light
source unit 1 and the one pin holding light source
unit 2 at the left side of the machine, and remove
the each pin.

Upper developing seal

Cassette lift

Figure 1-3-3

Light source
unit 2 pin

Figure 1-3-4

Light source
unit 1 pin

1-3-3

1-3

2A0

Remove the cleaning assembly retainers.

1. Open the front cover and remove the three
screws holding the image forming unit. Tip the
transfer section release lever, then pull out the
image forming unit horizontally.
Caution: When pulling out the image forming unit,

hold the both of the image forming unit
firmly and do not touch the separation
claws.

Screws

Conveying release lever

Figure 1-3-5

2. Remove the screw holding the cleaning assembly
retainer (at the front side of the machine), then
remove the cleaning assembly retainer. Remove
the pin holding the cleaning assembly retainer (at
the rear side of the machine), then remove the
cleaning assembly retainer.

Set the cleaning assembly.

1. Turn the cleaning retaining levers in the direction
of the arrow and set the cleaning retaining levers
firmly.

Pin

Cleaning assembly retainer
(rear side)

Screw

Cleaning assembly retainer
(front side)

Figure 1-3-6

1-3-4

Cleaning retaining levers

Figure 1-3-7

Load developer.

1. Lift the lock lever holding the developing
assembly through 90 degrees and slide the lever
on the top of the developing assembly in the
direction of the arrow, then release the nozzle of
the developing assembly from the toner hopper.

2. Remove the screw holding each of the front and
rear developing assembly retainers and lift the
levers for securing the developing assembly, and
then disconnect the positive connector and 4-pin
connector.

3. Hold the handle of the developing assembly and
remove the assembly from the copier.

Screw

Lock lever

4-pin connector

2A0

Positive connector

Screw

Lever

1-3

Figure 1-3-8

Handle

4. Remove the three screws and disengage the two
hooks and then remove the upper developing
cover.
Caution: Be sure to place the developing

assembly on a level surface when
loading developer.

Developing assembly

Figure 1-3-9

Screws

Upper developing cover

Figure 1-3-10

1-3-5

2A0

1-3

5. Shake the developer bottle well to agitate the
developer.

6. While turning the developing gear (with the
marked arrow) in the direction of the arrow,
uniformly pour developer into the developing
assembly.
Caution: Never turn the developing gear in the

reverse direction.

7. Refit the upper developing cover to the
developing assembly.

• When refitting the upper developing cover, be

sure to insert the large and small hooks until
they click into place and then secure with the
three screws.

Developing gear

Developer

Figure 1-3-11

Screws

Figure 1-3-12

Hooks

1-3-6

Install the upper developing seal.

2A0

1. Remove the two screws and fit the upper
developing seal using the removed screws.

• When fitting the upper developing seal, fit while

holding it toward the drum.

2. Insert the developing assembly back into the
image forming unit and connect the positive
connector and 4-pin connector.

3. Slide the lever on the top of the developing
assembly in the direction of the arrow and lower
the lock lever through 90 degrees to secure the
nozzle of the developing assembly to the toner
hopper.

4. Lower the levers for securing the developing
assembly to lock the assembly.

Screws

Upper developing seal

1-3

Figure 1-3-13

Levers for securing
the developing assembly

5. Insert the image forming unit into the copier.

• Do not refit the three screws that were used

originally to secure the image forming unit at
this point.

Lock lever

Lever

Figure 1-3-14

1-3-7

2A0

Fit the belt cleaning spacers.

1-3

1. Remove the screw and draw the conveying
section out laterally.

2. Remove the front and rear transfer spacers.

Conveying section

Screw

Figure 1-3-15

Rear transfer spacer

3. Remove the stop rings and bearing from the
transfer charger belt shaft.

1-3-8

Front transfer spacer

Figure 1-3-16

Stop ring

Bearing

Bearing

Stop ring

Figure 1-3-17

2A0

4. Disconnect the 1-pin connector on the white wire
and the 1-pin connector on the green wire. Shift
the transfer charger belt toward the left and
remove by lifting it.
Caution: Never touch the transfer charger belt.

5. Remove the four screws and disconnect the 1-pin
connector on a further green wire, and then
remove the belt cleaning housing.

1-pin connector
(green wire)

Figure 1-3-18

Screws

1-pin connector
(white wire)

1-3

Belt cleaning
housing

Screws

6. Fit the belt cleaning spacers as shown in the
figure and fasten together with the belt cleaning
housing with the four screws (M4 × 10 TP-A
bronze screws).

1-pin connector
(green wire)

Figure 1-3-19

Belt cleaning spacers

Figure 1-3-20

1-3-9

1-3

2A0

7. Connect the 1-pin connector on the green wire.

8. Refit the transfer charger belt.

• Be sure to insert the grounding bearing into the
grounding plate.

9. Connect the 1-pin connector on the green wire
and the 1-pin connector on the white wire, and
then fit the stop rings and bearings to the transfer
charger belt shaft.

Grounding bearing

Grounding plate

Figure 1-3-21

Adjust the fixing pressure.

1. Open the fixing eject cover.

2. Turn the fixing pressure screws in the direction of
the clockwise and tighten it, then adjust the fixing
pressure.

Fixing eject cover

Figure 1-3-22

3. Close the fixing eject cover.

4. Push back the transfer section its original position
and lift the transfer section release lever to the its
original position, then fasten it.

1-3-10

Fixing pressure screw

Figure 1-3-23

2A0

Connect the power cord.

1. Connect the power cord to the machine.*

2. Insert the power plug into the wall outlet.
*For metric models only.

Carry out initial developer setting. (mentenance item U130)

1. Turn the main switch on with opening the front cover.

2. The machine starts warming up, after “Close the front cover” message is displayed, enter the maintenance mode
by entering “10871087” using the numeric keys.

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

4. Close the front cover.

5. Press the start key to execute the maintenance item.

• In approximately 2 minutes, the toner control level and toner sensor control voltage are automatically set and the

settings displayed on the touch panel.
Display example
CONTROL: 125 (Toner sensor control voltage)
FIRST TARGET: 103 (Toner control reference voltage)
HUMID: 65 (Absolute humidity)

6. Press the stop/clear key.
Apply toner to the cleaning blade (maintenance item U160)

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

2. Press the start key to execute the maintenance item.

• Toner is applied to the drum and then the drive stops automatically.

1-3

Exit maintenance mode.

1. Close and open the front cover.

2. Enter “001” using the numeric keys and press the start key.

• The machine exits the simulation mode.

1-3-11

1-3

2A0

Set the cleaning blade.

1. Open the front cover and tip the conveying
release lever, then pull out the image forming unit
horizontally.

2. Check that the toner is applied to the drum and
loosen the blade retaining screw at the left side of
the image forming unit, then slide the blade
release lever in the direction of the arrow.

• The cleaning blade is set and the cleaning blade

contacts with the drum.

Image forming unit

Conveying release lever

Figure 1-3-24

Blade release lever

3. Refasten the blade retaining screw, then fasten
the blade release lever.

4. Push back the image forming unit its original
position and lift the conveying release lever up
the its original position, and then fasten with the
three screws fastened the image forming unit .

5. Close the front cover.

Blade retaining screw

Figure 1-3-25

Screws

Conveying release lever

Figure 1-3-26

1-3-12

Load toner.

1. Open the operation section right cover.

2. Hold the new bottle cartridge with the cap facing
down and tap the side of the cartridge ten times.

2A0

Operation section right cover

1-3

Figure 1-3-27

3. Shake the bottle cartridge vertically and
horizontally ten times.

Bottle cartridge

Figure 1-3-28

Figure 1-3-29

1-3-13

1-3

2A0

4. Fit the metal fitting of the bottle cartridge to the
toner replenishing opening so that the marks on
the cartridge and copier align. Turn the cartridge
in the direction of the arrow until the ♦ mark on
the cartridge and the mark on the copier align.

Figure 1-3-30

5. After sixty seconds, tap each side of the bottle
cartridge 10 times to shake off all the remaining
toner.

6. Turn the bottle cartridge to the initial position and
remove from the toner replenishing opening.

7. Close the operation section right cover.

Install the original tray.*

1. Hook the grooves of the original tray to the pins
(two) at the right side of the machine, then install
the original tray to the machine.
*Inch models only.

Make test copies.

1. Load paper in a casette and make test copies.

Completion of machine installation.

1-3-14

Figure 1-3-31

1-3-2 Setting initial copy modes

Factory settings are as follows:

2A0

Maintenance

item No.

U253
U254
U255
U256

U258
U260

U263
U264

U330
U331

U333
U334

U340
U343

U344
U347

U348

U350

Contents

Switching between double and single counts
Turning auto start function on/off
Setting auto clear time
Turning auto preheat/energy saver
function on/off
Switching copy operation at toner
empty detection
Changing the copy count timing
Setting DF copy ejection orientation
Setting date display order

Sets the number of copies for switching
the copy eject tray in the finisher
Switching the paper ejection mode
Setting the number of digits of ID-code
Setting the ejection method in the booklet
stitcher
Setting the job build mode
Switching between duplex/simplex
copy mode
Setting preheat/energy saver mode
Setting auto drawer size detection
Setting the copy density adjustment range
Setting the ID-code error output

Factory setting

Double count
ON
90s
ON

SINGLE MODE, 5
EJECT
Face down
Month-day-year (inch)
Day-month-year (metric)

100
FACE UP
7 digits (inch), 4 digits (metric)

1 BIN
NOMAL

Simplex copy
Energy Star
ON (inch), OFF (metric)
SPECIAL AREA
OFF

1-31-3

User

settings

Exposure mode
Exposure steps
Auto exposure adjustment
Manual exposure adjustment
Default cassette
Paper section
Automatic cassette switching
Special paper
APS for special paper
Auto shut off time
Auto shut off ON/OFF
Auto preheat time
Copy limit
Management copy change
Custom border erase size
Cassette for insert sheet
Create shortcut
Key sound
Program key mode
Zoom mode

Manual
7 steps
7 (center)
7 (center)
Large paper deck
Auto (APS)
ON
Not set
OFF
90 min.
ON
15 min.
999 copies
6200
60-94 mm (metric), 2
Upper cassette
Not set
ON
Direct call (metric), Regular (inch)
Standard zoom (metric)
Size zoom (inch)

3

/8"-311/16" (inch)

1-3-15

2A0

1-3-3 Copier management

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

(1) Executing a copier management item

Start

1-3

Default/Special: on

Management: on

Week timer/Weekly timer: on

Copy default: on

Machine default: on

Enter an ID code Department management (see page 1-3-17)

Enter an ID code

Enter an ID code

Week timer (see page 1-3-17)

Copy default (see page 1-3-18)

End: on

End: on

End: on

1-3-16

Enter an ID code

Language: on

Machine default (see page 1-3-20)

End: on

Language (see page 1-3-20)

End

(2) Department management

2A0

Registering a new department code

Sets a department code and the limit of the number
of copies for that department.

1. SET CODE: on

2. REGISTER: on

3. Enter a department code using the numeric keys:
7 digits for inch models and 4 digits for metric
models.

4. REGISTER: on

5. Enter the limit using the numeric keys.
Setting range is 1000 to 999000 (in every 1000)
copies. Set to 0 for unlimited copies.

6. REGISTER: on

7. END: on

8. END: on

Deleting a department code

1. SET CODE: on

2. DELETE: on

3. Select the department code to be deleted.

4. END: on

5. END: on

Clearing copy counts

1. SET CODE: on

2. CLEAR: on

3. YES: on

4. END: on

Viewing copy counts

1. REFERENCE: on

2. END: on

Printing a copy management report

1. Set A4/81/2" × 11" copy paper.

2. PRINT MANAGEMENT LIST: on

Turning copy management function on/off

1. Select ON or OFF.

1-31-3

Altering the copy limit

1. SET CODE: on

2. CORRECTION: on

3. Select the department code to be altered.

4. Enter the limit of the number of copies using the
numeric keys.

5. REGISTER: on

6. END: on

7. END: on

(3) Week timer

Setting the time

1. TIMER SET: on

2. Set the current day of the week, hour and minute
by pressing +/- symbols (24-hour clock format).

3. ENTER: on

Programming the week timer

Set the on/off time for each day of the week.

1. WEEK TIMER: on

2. Select the day of the week to be set.

3. Select ON and set hours and minutes by pressing
the +/- symbols.

4. Select OFF and set hours and minutes by
pressing the +/- symbols.

5. ENTER: on

6. ENTER: on

Canceling the timer function

1. CANCEL: on

2. Select the day of week to be canceled.

3. ENTER: on

Turning the timer on/off

1. Select ON or OFF.

1-3-17

2A0

(4) Copy default

1-3

Exposure mode

Selects auto or manual exposure to be given priority
in initial mode.

1. Display EXPOSURE MODE using the Up/Down
keys.

2. Select AUTO or MANUAL.

Exposure steps

Sets the exposure steps in manual exposure mode.

1. Display EXPOSURE STEPS using the Up/Down
keys.

2. Select 7 STEPS or 13 STEPS.

Toner economy mode

Sets the initial value of the toner economy mode at
power on.

1. Display TONER ECONOMY using the Up/Down
keys.

2. CHANGE: on

3. Select ON or OFF

4. END: on

Output form

Sets the initial value of the sort mode when setting
originals.

1. Display OUTPUT FORM using the Up/Down keys.

2. Select SORT:ON or SORT:OFF

Paper selection

Set if the same sized paper as the original to be
copied is automatically selected.

1. Display PAPER SELECTION using the Up/Down
keys.

2. Select AUTO or MANUAL.

Job programming

Selects whether all program numbers are selectable
or program No. 1 is given priority.

1. Display JOB PROGRAMMING using the Up/Down
keys.

2. Select REGULAR (for all program numbers) or
OFF THE PLATEN (for program No. 1).

Auto exposure adjustment

Adjusts the exposure in auto density mode.

1. Display AUTO EXPOSURE AD-JUSTMENT using
the Up/Down keys.

2. CHANGE: on

3. Adjust the exposure by pressing DARKER or
LIGHTER.

4. END: on

Manual exposure adjustment.

Adjusts the exposure in manual density mode.

1. Display MANUAL EXPOSURE ADJUSTMENT
using the Up/Down keys.

2. CHANAGE: on

3. Adjust the exposure by pressing DARKER or
LIGHTER.
Setting is available for text, text and photo (mixed)
and photo modes.

4. END: on

Copy quality

Sets the image quality to be selected in initial mode.

1. Display QUALITY using the Up/Down keys.

2. Select MIXED, TEXT or PHOTO.

Default cassette

Set the cassette to be selected after the all clear/
reset key is pressed.

1. Display DEFAULT DRAWER using the Up/Down
keys.

2. CHANGE: on.

3. Select the default cassette.

Zoom mode

Selects fixed or standard magnifi-cations in
reduction/enlargement mode.

1. Display ZOOM MODE using
the Up/Down keys.

2. Select SIZE ZOOM or STAN-DARD ZOOM.

Copy limit

Sets the limit of the number of copies for multiple
copying.

1. Display COPY LIMIT using
the Up/Down keys.

2. CHANGE: on

3. Enter the number of copies up to 999 using the
numeric keys.

4. CHANGE: on

1-3-18

2A0

Custom size for border erase

Sets the custom size for border erase copying.

1. Display CUSTOM BORDER ERASE SIZE using
the Up/Down keys.

2. CHANGE: on

3. Set the paper width by pressing the upper +/­symbols. Setting is available between 94 mm/311/
16" and 214mm/87/16" in 8 mm/5/16" steps.

4. Set the paper length by pressing the lower +/­symbols. Setting is available between 60 mm/23/8"
and 296 mm/115/8" in 4 mm/2/16".

5. END: on

Front and back page margin

Sets if individual margin settings for front and back
page are available.

1. Display F & BP. MARGIN using the Up/Down
keys.

2. Select ON or OFF.

Cassette for insert sheet

1. Display DRAWER FOR INSERT SHEET using the
Up/Down keys.

2. CHANGE: on

3. Select the paper feed location.

Create shortcut

Registers frequently used function keys, and displays
them on the basic screen.

1. Display CREATE SHORTCUT #1 or CREATE
SHORTCUT #2 using the Up/Down keys.

2. CHANGE: on

3. Select a function.

Create user choice #1-#5

Moves frequently used function keys to the basic
screen for selecting a function.

1. Display one of CREATE USER CHOICE/
Customize GUI #1 to #5 using the Up/Down keys.

2. CHANGE: ON

3. Select the function to be moved.

1-31-3

Cassette cover sheet/stitch

Selects the cassette to be used for setting cover
sheets in the stitching mode.

1. Display DRAWER FOR COVER SHEET
(BINDING) using the Up/Down keys.

2. CHANGE: on

3. Select a cassette.

Rotate sort

Sets if rotate sort is available in sort copy mode.
Setting is not available when the finisher is installed.

1. Display ROTATE SORT using
the Up/Down keys.

2. Select ON or OFF.

Modify Copy

Sets if modify copy is available.

1. Display MODIFY COPY using the Up/Down keys.

2. Select ON or OFF.

1-3-19

2A0

(5) Machine default

1-3

Un-fixed size from bypass

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

1. Display UN-FIXED SIZE FROM BYPASS using
the Up/Down keys.

2. Select ON or OFF.

Auto cassette switching

Sets if the auto cassette switching function is
available.

1. Display AUTOMATIC DRAWER SWITCHING
using the Up/Down keys.

2. Select ON or OFF.

Cassette paper size

Changes the paper size for the cassettes displayed
on the basic screen.

1. Display DRAWER PAPER SIZE for the cassette
to be changed using the Up/Down keys.

2. CHANGE: ON

3. Select paper size.

Key sound

Sets if a beep sounds when a key on the key touch
panel is pressed.

1. Display KEY SOUND using the Up/Down keys.

2. Select ON or OFF.

Auto preheat time

Sets the auto preheat time.

1. Display AUTO PREHEAT TIME using the Up/
Down keys.

2. Set the time by pressing the +/- symbols. Setting
is available between 5 and 45 min. in 5 min. steps

Auto shutoff time

Sets the auto shutoff time.

1. Display AUTO SHUT-OFF TIME using the Up/
Down keys.

2. Set the time by pressing the +/- symbols. Setting
is available between 15 and 240 min. in 15 min.
steps.

Special paper

Selects the cassette for special paper.

1. Display SPECIAL PAPER using the Up/Down
keys.

2. CHANGE: ON

3. Select the cassette. To cancel, select the same
cassette again.

4. End: ON

APS for special paper

Sets if auto paper selection is available for the paper
feed location with the special paper.

1. Display APS FOR SPECIAL PAPER using the Up/
Down keys.

2. Select ON or OFF.

(6) Language

Switches the language to be displayed on the key touch panel.

1. Press on the language to be displayed.

•Available languages are English, German, French, Italian and

Spanish for metric models, and English, French and Spanish for
inch models.

Management code change

Changes the management code to be used.

1. Display MANAGEMENT CODE CHANGE using
the Up/Down keys.

2. CHANGE: ON.

3. Enter the code using the numeric keys.

4. CHANGE: ON

Auto shutoff

Sets if the auto shutoff function is available.

1. Display AUTO SHUT-OFF using the Up/Down
keys.

2. Select ON or OFF.

1-3-20

1-3-4 Installing the finisher (option)

<Procedure>

1. Fit the retainer to the mount and secure with four
screws (M4 × 06 TP-A chrome screws) while
positioning the screws at the centers of the slots.

Screws

(TP-A chrome M4

×

06)

Retainer

2A0

2. Fit the entry support guide to the ejection cover with
two screws (M4 × 08 tap-tight binding screws).

Figure 1-3-32

Ejection cover

(tap-tight birding M4

Mount

1-31-3

Entry support guide

Screws

× 08)

3. Remove the two screws on the bottom of the ejection
cover.

Figure 1-3-33

Screws

Figure 1-3-34

1-3-21

2A0

4. Fit the parts assembled in step 1 to the ejection
cover with the two screws removed in step 3 and two
screws (M4 × 14 TP-A chrome screws) such that the
screws are positioned at the bottom of the slots.

Ejection cover

1-3

5. Remove the pin securing the rail unit.

6. Remove the waste toner tank, and then remove the
tapes securing the solenoid and the feedshift guide.

(TP-A chrome

M4 × 14)

Solenoid

Screws

Screws

Figure 1-3-35

Feedshift guide

Tape

Tape

Pin

7. Remove the two screws securing the lower left cover
of the copier.

1-3-22

Figure 1-3-36

Screws

Figure 1-3-37

8. Draw out the rail unit from the finisher and fit to the
copier with the two screws removed in step 7.

2A0

Screws

9. Open the front cover and remove the pin securing
the intermediate tray unit, and then draw the
intermediate tray out.

Rail unit

1-31-3

Figure 1-3-38

Intermediate
tray

Front cover

Pin

10.Remove the pin securing the stapler unit at the
bottom of the intermediate tray. Lift the stapler unit in
the direction of the arrow and fit the two stapler
cartridges.

Pin

Figure 1-3-39

Stapler
cartridges

Pin

Stapler unit

Figure 1-3-40

1-3-23

1-3

2A0

11.Lift the stapler unit further and then lower it to the
original position.

12.Push the intermediate tray back in and close the front
cover.

13.Fit the sort tray with the two fixing guide pins and two
hexagonal cap nuts.

Stapler unit

Figure 1-3-41

Hezagonal cap nuts

14.Insert the non-sort tray vertically and then swing
down into position.

Sort tray

Fixing
guide pins

Figure 1-3-42

Non-sort tray

1-3-24

Figure 1-3-43

2A0

15.Connect the signal cable for the finisher to the connector on the copier.

16.Insert the copier power plug into the wall outlet and turn the main switch on.

17.Check that the center of each cassette is correct and then make a test copy in punch mode by feeding paper from the
bypass table.

18.Measure the discrepancy L (mm) of the center of the punch holes.

19.Loosen the four screws (M4 × 06 TP-A chrome screws) securing the retainers and shift the retainers by the measured
amount L and retighten the screws.

• If the punch hole is displaced to the front, shift the retainers toward the rear.

• If the punch hole is displaced to the rear, shift the retainers toward the front.

Retainer

L

L

Screws

Figure 1-3-44

After adjusting the center of the punch holes, if the joints of the retainers and the finisher do not engage correctly due to
friction, adjust the position of the retainers as follows:

20.Remove the two screws securing the rail unit and
then remove the rail unit from the copier.

21.Remove the lower left cover from the copier and fit

Retainers

the rail unit directly to the retainers with the two
screws for each.

22.Loosen the two screws on each of the front and rear
retainers and adjust the engagement of the retainers
by shifting them.

23.After adjustment, retighten the screws on the
retainers and remove the two screws securing the
rail unit and then the rail unit from the retainers.

24.Refit the lower left cover and secure the rail unit with
the two screws.

Screws

1-31-3

Figure 1-3-45

Screws

1-3-25

1-3

2A0

1-3-5 Installing the booklet stitcher (option)

<Procedure>

1. Remove the two screws securing the ejection cover
and then secure the latch catch with four screws (M4
× 14 binding screws).

2. Insert the shaft of the joint spacer into the groove of
the latch catch and secure the spacer with a screw
(M6 × 06 screw).

Screws

(binding M4

Screws

(binding M4

Figure 1-3-46

Screw

(screw M6

×

×

14)

× 06)

14)

Latch catch

Latch catch

3. Insert the retainer into the rail unit guide while
aligning it with the groove in the rail unit guide.

• Make sure that the plate spring of the retainer fits

into the groove and the edges of the rail unit guide
fit between the pulleys on the reverse side of the
retainer.

1-3-26

Joint spacer

Figure 1-3-47

Rail unit guide

Plate spring of
the retainer

Retainer

Figure 1-3-48

4. Orient the pulley of the rail unit guide toward the
copier and fit a rail unit caster to each side of the
retainer.

2A0

Rail unit guide

5. Remove the two screws securing the bottom of the
lower left cover and slide the retainer in the direction
of the arrow.

6. Secure the lower left cover with the two screws
removed in step 5 so that the front and rear gaps
between the floor and retainer are 10 mm.

Rail unit
caster

Retainer

Retainer

Rail unit
caster

1-31-3

Figure 1-3-49

10 mm 10 mm

7. Loosen the two screws securing the fixing plate and
lower the fixing plate to the floor.

8. Slide the rail unit guide toward the fixing plate and
pass it to the back of the stitcher.

Screws

Figure 1-3-50

Screws

Rail unit guide

Figure 1-3-51

1-3-27

1-3

2A0

9. Secure the rail unit guide with a screw (M4 × 06
screw with lock) at the position where the round
holes in it and the fixing plate coincide.

10.Tighten the two screws for the fixing plate at the
position where the rail unit guide is horizontal.
Reference: Secure the fixing plate at a height of 8.0

mm from the floor.

Screw

(screw with lock

M4

×

Figure 1-3-52

06)

Rail unit guide

11.Insert the cover cap into the round hole.

12.Attach the indication label sheet to the upper front
cover.

8.0 mm

Screws

Rail unit guide

Figure 1-3-53

Indication label sheet

Cover cap

13.Connect the signal cable for the stitcher to the
connector on the copier.

1-3-28

Figure 1-3-54

Installing the relay cable and IPC PCB

1. Remove the five screws securing the rear cover and
then the cover.

2. Remove the fifteen screws securing the main PCB
cover and then the cover.

2A0

Main PCB cover

1-31-3

Figure 1-3-55

3. Insert the board support into the round hole in the
main PCB shield.

4. Connect the 10-pin connector of the relay cable to
connector J2 on the IPC PCB.

5. Connect connector J1 of the IPC PCB to CN19 on
the main PCB and locate the round hole in the IPC
PCB over the board support to secure the IPC PCB
in place.

6. Pass the relay cable through the slot in the main
PCB shield.

Board support

Figure 1-3-56

Relay cable

IPC PCB

Main PCB shield

Main PCB

CN19

J1

Board support

Round hole

Figure 1-3-57

1-3-29

2A0

7. Remove the two screws securing the main PCB
shield and open the main PCB shield.

1-3

8. Detach the 6-pin connector of the main wiring.

9. Connect the detached main wiring 6-pin plug and
receptacle to the 6-pin receptacle and plug of the
relay cable respectively.

Main PCB
shield

Screw

Screw

Figure 1-3-58

6-pin plug

10.Secure the wiring of the relay cable with the two
bands.

6-pin
receptacle

Relay cable

Figure 1-3-59

Bands

1-3-30

Figure 1-3-60

1-3-6 Installing the side deck (option)

<Procedure>

1. Remove the two screws from the support.

2A0

Screws

1-31-3

Figure 1-3-61

2. Cut out the three aperture plates on the upper right
cover using nippers.

3. Insert the lower merge guide into the upper right
cover. Open the upper right cover and secure the
lower merge guide with two screws (M4 × 06 binding
screws).

Upper right cover

Aperture plates

Figure 1-3-62

Upper right cover

Screws

(binding M4 × 06)

Lower merge guide

Figure 1-3-63

1-3-31

2A0

4. Close the upper right cover. While holding the lower
merge guide downward, secure the guide with two
screws (M4 × 08 TP-P tight screws).

Lower merge guide

1-3

5. Open the upper right cover. Insert the upper merge
guide into the cover from the inside and secure with
two screws (M4 × 06 binding screws).

Upper right cover

Figure 1-3-64

Upper merge guide

Screws

(binding M4

Figure 1-3-65

Screws
(TP-P tight M4

×

06)

×

08)

6. Close the upper right cover. While holding the upper
merge guide upward, secure the guide with two
screws (M4 × 08 TP-P tight screws).

1-3-32

Screws

(TP-P tight M4

Figure 1-3-66

×

08)

Upper merge guide

7. Remove the two screws from the lower rear right
cover, the screw from the lower front right cover, and
then remove the lower middle right cover.

8. Refit the screws removed in step 7 to the lower rear
right cover and lower front right cover.

9. Insert the folded part of the interlock switch into the
slot in the lower rear right cover and secure with a
screw (M4 × 12 flat-head screw).

Lower front right cover Lower rear right cover

Lower middle

right cover

Screw

Screws

Figure 1-3-67

Interlock switch

Screw

(flat-head M4

×

12)

2A0

1-31-3

10.Pull out the rail retainer of the deck and insert it
between the frame and the lower right cover.

Figure 1-3-68

Lower right cover

Figure 1-3-69

Retainer

1-3-33

1-3

2A0

11.Open the lower vertical conveying cover and align
the V-shaped groove of the retainer with the center of
the scale located at the base. Then secure the
retainer with two screws (M4 × 06 TP screws).

(TP screw M4

Figure 1-3-70

Screws

×

06)

12.Connect the signal cable for the deck to the
connector on the copier.

13.Connect the power plug to the wall outlet and turn
the main switch on.

14.Press the right down switch to descend the lift until it
reaches lower limit.

15.Load paper in the side deck.

16.Run maintenance item U034 (Adjusting the print start
timing) and make a test copy.

17.Measure the discrepancy L (mm) between the center
of the test copy and the optical axis. If L is 1.0 mm or
above, loosen the two screws of the retainer and
move the V-shaped groove on the retainer by the
measured amount L and retighten the screws.

• If the line is shifted to the front ( a ), move the V-

shaped groove of the retainer toward the front.

• If the line is shifted to the rear ( b ), move the V-

shaped groove of the retainer toward the rear.

L

L

a b

Figure 1-3-71

1-3-34

1-3-7 Installing the key counter (option)

Key counter installation requires the following parts:
Key counter set (P/N 2A369700)
Contents of the set:

• Key counter cover (P/N 2A360010)

• Key counter retainer (P/N 66060030)

• Key counter cover retainer (P/N 66060021)

• Key counter mount (P/N 66060040)

• Key counter assembly (P/N 41529210)

• Four (4) M4 × 6 bronze TP-A screws (P/N B4304060)

• Two (2) M4 × 10 bronze TP-A screws (P/N B4304100)

• One (1) M4 × 6 chrome TP-A screw (P/N B4104060)

• Two (2) M3 × 6 bronze flat-head screws (P/N B2303060)

• One (1) M3 bronze nut (P/N C2303000)

<Procedure>

1.Fit the key counter assembly to the key counter
retainer using the two screws and nut.

2.Fit the key counter mount to the key counter cover
using the two screws, and attach the key counter
retainer to the mount using the two screws.

2A0

1-31-3

×

6 screws

M4

(B4304060)

M3 nut (C2303000)

3.Remove the four screws and detach the middle right
cover from the machine.

4.Cut out the aperture plate on the middle right cover
using nippers.

Key counter retainer (66060030)

Key counter mount (66060040)

M4

×

6 screws (B4304060)

Key counter assembly (41529210)

M3 × 6 flat-head screws (B2303060)

Figure 1-3-72

Key counter cover (2A360010)

Middle right cover

Figure 1-3-73

Aperture plate

1-3-35

1-3

2A0

5.Pass the 4-pin connector of the key counter through
the apertures in the key counter cover retainer and
middle right cover, and insert into the 4-pin connector
inside the machine.

6.Seat the projection of the key counter cover retainer
in the aperture in the middle right cover, and fasten
them both to the machine using the two screws.

7.Refit the screw to the machine of the middle right

4-pin connector

4-pin connector

Aperture

Middle right cover

Key counter cover retainer
(66060021)

×

10 screw

M4
(B4304100)

Key counter cover

cover.

8.Fit the key counter cover with the key counter
assembly inserted to the key counter cover retainer
on the machine.

M4

×

10 screw

(B4304100)

×

6 screw

M4

(B4104060)

Figure 1-3-74

9.Insert the key counter into the key counter assembly.

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

11.Run maintenance item U204 and select “KEY COUNTER.”

12.Exit the maintenance mode.

13.Check that the message requesting the key counter to be inserted is displayed when the key counter is pulled out.

14.Check that the counter counts up as copies are made.

1-3-36

1-3-8 Installing the cassette heater (option)

2A0

<Procedure>

1.Remove the five screws holding the rear cover and
then the cover.

2.Remove the two screws securing the main PCB
shield and open the main PCB shield.

3.Remove the four screws holding the large paper
deck and then the deck.

4.Pull the upper and lower cassettes out.

5.Fit the cassette heater using the tapes and then
pass the wires through the clearance under the
machine rear and let the them out.

Screws

Screws

1-31-3

Large paper deck

Figure 1-3-75

Cassette heater

6.Remove the open connector from the 2-pin
connector of the machine, and insert the 2-pin
connector of the cassette heater into the 2-pin
connector of the machine.

7.Secure the wires using the clamp.

8.Refit all the removed parts.

Figure 1-3-76

2-pin connector

2-pin connector

Figure 1-3-77

1-3-37

1-3

2A0

1-3-9 Installing the MMD host monitoring system device (option)

<Procedure>

1.Remove the two screws holding the signal cable
cover and then the cover.

Signal cable cover

Screws

Figure 1-3-78

2.Remove the five screws securing the rear cover and
then the cover.

3.Remove the two screws securing the main PCB
shield and open the main PCB shield.

4.Pull the 10-pin connector out of the machine, remove
the jumper.

Jumper

5.Close the main PCB shield and refit the main PCB
shield with the two screws.

6.Refit the rear cover with the five screws.

7.insert the 10-pin connector of the machine into the
10-pin connector of the signal cable.
Secure the signal cable using the two screws
removed in step 1.

10-pin connector

Figure 1-3-79

10-pin
connector

10-pin
connector

Signal cable

Screws

Figure 1-3-80

1-3-38

8.Fit the MMD host monitoring system device to the
rear cover using the two bronze binding tap-tight
screws M3 × 16.

9.Insert the connector of the signal cable into the
connector of the MMD host monitoring system
device, and tighten the two screws on the signal
cable.

MMD host monitoring

system device

2A0

Screw

10.Insert one connector of the modular connector cable
into the "LINE" jack on the MMD host monitoring
system device and the other into a telephone jack.

Screws

(Binding tap-tight

×

16)

M3

Modular connector cable

Figure 1-3-81

LINE

TEL

Screw

1-31-3

Figure 1-3-82

1-3-39

1-4-1 Maintenance mode

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

(1) Executing a maintenance item

Start

2A0

Enter 10871087.

Enter the number of the maintenance
item to be executed using the
numeric or Up/Down keys.

Press the print key.

The maintenance item is run.

Press the stop/clear key.

Yes

Run the item again?

· · · · · · · Entering the maintenance mode

· · · · · · · Selecting a maintenance item

1-4

No

Yes

Run another maintenance

mode?

No

Enter 001 using numeric or Up/Down
keys, and press the print key.

End

· · · · · · · Exiting the maintenance mode

1-4-1

2A0

• Data setting
Data is changed by pressing the Up/Down keys, and the new data is set by pressing the start key. In a maintenance item where
multiple items can be changed, the item to be changed is selected by pressing on it on the touch panel.

/

Correcting position of FOLIO U035

Metric

C

1-4

LENGTH DATA : 330

WIDTH DATA : 210

3

330

ALL

4

1

2

Inch

Stop/
Clear

56

Start

56

Figure 1-4-1

1 Adjustment window ······· Displays the data to be set.
2 Up/Down keys ··············· Changes the setting.
3 Items ····························· Displays the selected item in reverse.
4 Current setting··············· Displays the previously set data by pressing the start key.
5 Start key ························ Sets the changed setting.
6 Stop/clear key ··············· Cancels the change.
7 All key···························· Used to clear all data, such as when resetting a counter.

• Operation execution
The specified operations and auto adjustments are performed by pressing the start key. In a maintenance item where multiple
operations can be performed, the item to be executed is selected by pressing on it on the touch panel.

/

Drive motors and fans ON

U030

Metric

C

MAIN MOTOR

1

FEED MOTOR

Inch

Stop/
Clear

23

Start

23

Figure 1-4-2

1 Items ····························· Displays the selected item in reverse.
2 Start key ························ Starts operation.
3 Stop/clear key ··············· Stops operation.

• Interrupt copy mode
Outputting a test copy or VTC pattern is required in some maintenance items. Such an output is enabled by pressing the
interrupt key to enter interrupt copy mode.
However, since this function is restricted depending on maintenance items, only outputting may be enabled, or a test copy
even from an original may not be as good as that made in normal copy mode.
To return the screen from interrupt copy mode to maintenance mode, press the interrupt key again.

1-4-2

(2) Maintenance mode item list

Section

General

Initialization

Drive, paper
feed, paper
conveying and
cooling system

Optical

Item

No. setting*

U000 Outputting an own-status report
U001 Exiting the maintenance mode
U003 Setting the service telephone number
U004 Setting the machine number
U005 Copying without paper
U008 Outputting and setting the machine information
U019 Displaying the ROM version
U020 Initializing all data
U021 Initializing memories
U022 Initializing backup data
U024 Formatting the HDD
U030 Checking motor operation
U031 Checking switches for paper conveying
U032 Checking clutch operation
U033 Checking solenoid operation
U034 Adjusting the print start timing

Adjusting leading edge registration
Adjusting leading edge registration (second face)
Adjusting the center line of image printing

U035 Setting folio size

Length
Width

U036 Setting envelope size

Length
Width

U037 Checking fan motor operation

Optical section fan motor
Cooling fan motor
Fixing unit fan motor
Main charger fan motor
LSU fan motor
Duplex fan motor
Eject fan motor
Blow fan motors 1 and 2

U050 Setting the switchback drive

Setting duplex forwarding clutch-off timing
Setting duplex forwarding clutch-off timing (for 11" × 17" copy paper)
Setting duplex reversing clutch-on timing
Setting duplex reversing clutch-off timing

U051 Adjusting the amount of slack in the paper before registration

Cassette feed
Bypass feed
Duplex feed

U053 Performing fine adjustment of the motor speed

Drive motor/paper conveying motor

U060 Adjusting the scanner input properties

Text/text and photo/photo mode
U061 Turning the exposure lamp on
U063 Adjusting the shading position
U065 Adjusting the scanner magnification

Main scanning direction/auxiliary scanning direction
U066 Adjusting the scanner leading edge registration
U067 Adjusting the scanner center line
U070 Adjusting the DF magnification

Maintenance item contents

Initial

—
—

***************

000000

—
—
—
—
—
—
—
—
—
—
—

0
0
0

330
210

242
162

—
—
—
—
—
—
—
—

100

75
50

120

+10
–10
+10

5/5

12

—

0

0/0

–2
–2

–10

2A0

1-4

* Initial setting for executing maintenance item U020

1-4-3

2A0

1-4

Section

Optical

High voltage

Developing

Fixing and
cleaning

Operation panel
and support
equipment

Item

No. setting*

U071 Adjusting the DF scanning timing

Adjusting the DF leading edge registration
Adjusting the DF traling edge registration

U072 Adjusting the DF center line

Center line for the simplex copy mode
Center line for the front face in duplex copy mode

Center line for the reverse face in duplex copy mode
U073 Checking scanner operation
U074 Adjusting the DF automatically
U080 Adjusting exposure in toner economy mode
U088 Setting the input filter (moiré reduction mode)
U089 Outputting a PG pattern
U091 Checking shading
U092 Adjusting the scanner automatically
U093 Setting the exposure density gradient

Text/text and photo/photo mode
U099 Checking and setting the original size detection sensor
U100 Setting the surface potential
U101 Setting high voltages

Transfer voltage
U102 Setting the cleaning interval for the transfer charger
U110 Checking/clearing the drum count
U111 Checking/clearing the drum drive time
U130 Initial setting for the developer
U131 Setting the toner sensor control voltage
U132 Replenishing toner forcibly
U135 Checking toner motor operation
U136 Turning the toner level detection function on/off
U137 Checking the toner level detection sensor
U155 Displaying the toner sensor output
U156 Changing the toner control level

Toner control level

Toner empty level

Toner control reference voltage for initial developer setting
U157 Checking/clearing the developing drive time
U158 Checking/clearing the developing count
U160 Applying toner to the cleaning blade
U161 Setting the fixing control temperature

Normal stabilization control temperature

Primary stabilization temperature

Secondary stabilization temperature

Aging time after secondary stabilization
U162 Stabilizing fixing forcibly
U194 Setting the fixing web drive
U196 Turning the fixing heater on
U198 Setting the fixing phase control

U200 Turning all LEDs on
U201 Initializing the touch panel
U202 Setting the MMD host monitoring system
U203 Operating DF separately
U204 Setting the presence or absence of a key card or key counter
U206 Setting the presence or absence of the coin vender

Maintenance item contents

Initial

10

– 15

– 8
– 8
– 7

—
—

– 6

OFF

—
—
—

0

170/50/0/0

160

150/150

3
0

—
—

128

—
—

ON

—
—

128

30

102

0
0

—

185
165
185

90

—

30

—

ON (inch)

OFF (metric)

—
—
—
—

OFF
OFF

* Initial setting for executing maintenance item U020

1-4-4

2A0

Section

Operation panel
and support
equipment

Mode setting

* Initial setting for executing maintenance item U020

Item

No. setting*

U208 Setting the deck lift operation
U209 Setting date and time
U238 Checking the operation of the mailbox solenoids and motors
U239 Checking the mailbox switches
U240 Checking the operation of the finisher
U241 Checking the finisher switches
U243 Checking the operation of the DF motors, clutches and solenoids
U244 Checking the DF switches
U245 Checking messages
U247 Checking the operation of the side deck
U248 Setting the paper eject device

• Adjustment of the amount of slack in the paper in
punch mode

• Punch limit

• Punch-hole scrap count

• Booklet stitcher stapling position adjustment

• Mailbox operation check

U250 Setting the maintenance cycle
U251 Checking/clearing the maintenance count
U252 Setting the destination
U253 Switching between double and single counts
U254 Turning auto start function on/off
U255 Setting auto clear time
U256 Turning auto preheat/energy saver function on/off
U258 Switching copy operation at toner empty detection

Number of copies after turning off of the toner level sensor before indicating
toner empty

Copy operation after toner empty detection
U260 Changing the copy count timing
U263 Setting DF copy ejection orientation
U264 Setting date display order

U265 Setting OEM purchaser code
U266 Setting the number of days after which to automatically delete documents
U330 Sets the number of copies for switching the copy eject tray in the finisher
U331 Switching the paper ejection mode
U332 Setting the size conversion factor
U333 Setting the number of digits of ID-code

U334 Setting the ejection method in the booklet sticher
U335 Setting the drum heater control
U336 Setting the HDD type
U337 Setting the paper size for the side deck
U338 Setting the transmission capacity limit for e-mail
U340 Setting the job build mode
U343 Switching between duplex/simplex copy mode
U344 Setting preheat/energy saver mode
U345 Setting the value for maintenance due indication
U347 Setting auto cassette size detection

U348 Setting the copy density adjustment range
U350 Setting the ID-code error output

Maintenance item contents

Initial

Side

—
—
—
—
—
—
—
—
—

0

75000

0
0
1

300

0

INCH

Double

ON

90

ON

1000

Single, 5

EJECT

Face down

Month-day-year (inch)

Day-month-year (metric)

0
7

100

Face Up

—

7 dignits (inch)

4 dignits (metric)

1 BIN

ON 1

0

—

Little

NOMAL

OFF

enagy star

0

ON (inch)
OFF (metric)
Special Area

OFF

1-4-5

1-4

2A0

1-4

Section

Mode setting

Others

Item

No. setting*

U402 Adjusting margins in image printing
U403 Adjusting margins for reading an original on the contact glass
U404 Adjusting margins for DF original reading
U407 Adjusting the printing timing for the original on the contact glass
U901 Checking/clearing copy counts by paper feed locations
U903 Checking/clearing the paper jam counts
U904 Checking/clearing the service call counts
U905 Checking/clearing counts by optional devices
U906 Resetting partial operation control
U907 Checking and resetting the count value on each ejection location
U908 Checking the count value of the electronic counter
U909 Checking/clearing the fixing web count
U910 Clearing the black ratio data
U911 Checking/clearing copy counts by paper sizes
U990 Checking/clearing the time for the exposure lamp to light
U991 Checking/clearing the scanner count
U992 Checking/clearing the printer count

Maintenance item contents

Initial

23/30/28/40/44

4/6/6/6
4/8/4/6

0

0
0/0
0/0
0/0

—

0/0/0

0

0

—

0

0

0

0

* Initial setting for executing maintenance item U020

1-4-6

(3)Contents of maintenance mode items

Maintenance

item No.

U000 Outputting an own-status report

Description

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

Purpose

To check the current setting of the maintenance modes, or paper jam or service call occurrences.
Before initializing or replacing the backup RAM, output a list of the current settings of the maintenance

modes to reenter the settings after initialization or replacement.

Method

1 Press the start key. The screen for selecting an item is displayed.
2 Select the item to be output. The selected item is displayed in reverse.

Display

MAINTENANCE
JAM
SERVICE CALL

Output list

List of the current settings of the maintenance modes
List of the paper jam occurrences
List of the service call occurrences

2A0

Description

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

1

When A4/11" × 8
location.

When output is complete, the screen for selecting an item is displayed.

Completion

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

U001 Exiting the maintenance mode

Description

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

Purpose

To exit the maintenance mode.

Method

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

U003 Setting the service telephone number

Description

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

Purpose

To set the telephone number to call service when installing the machine.

Method

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

Setting

1 Enter a telephone number (up to 15 digit) using the numeric keys.

To enter symbols such as hyphens and parentheses, select as required from the symbols displayed on
the touch panel as shown below. To move the cursor, press either of the arrows in the bottom row.

*
(

(Space)

—

→

←

2 Press the start key. The phone number is set, and the screen for selecting a maintenance item No. is

displayed.

Completion

To exit the maintenance mode without changing the current setting, press the stop/clear key. The screen for
selecting a maintenance item No. is displayed.

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

#

)

1-4

1-4-7

2A0

1-4

Maintenance

item No.
U004 Setting the machine number

Description

Displays and changes the machine number.

Purpose

To check or set the machine number.

Method

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

Setting

1 Enter the last six digits of the machine number using the numeric key.

Do not enter the first two digits, 3 and 7.

2 Press the start key. The machine number is set.

Completion

To exit the maintenance mode without changing the current setting, press the stop/clear key. The screen for
selecting a maintenance item No. is displayed.

U005 Copying without paper

Description

Simulates the copy operation without paper feed.

Purpose

To check the overall operation of the machine.

Method

1 Press the start key. The screen for selecting an item is displayed.
2 Select the item to be operated. The selected item is displayed in reverse.

Display Operation

PPC
PPC + DF

Only the copier operates.
Both the copier and SRDF operate (continuous operation).

Description

3 Press the interrupt key. The copy mode screen is displayed.
4 Set the operation conditions required on the copy mode screen.

Changes in the following settings can be made.

• Paper feed locations

• Magnifications

• Simplex or duplex copy modes

• Number of copies: in simplex copy mode, continuous copying is performed when set to 999; in duplex

copy mode, continuous copying is performed regardless of the setting.

• Copy density

• Keys on the operation panel other than the energy saver key

5 To control the paper feed pulley, remove all the paper in the cassettes, or the cassettes. With the paper

present, the paper feed pulley does not operate.

6 Press the start key. The operation starts.

Copy operation is simulated without paper under the set conditions. When operation is complete, the
screen for selecting an item is displayed.

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

Completion

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

1-4-8

2A0

Maintenance

item No.

U008 Outputting and setting the machine information

Description

Outputs the machine information report and sets the machine installation date.

Purpose

To save the data of the machine installation date and total counter value when installing the machine.

Start

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

Display Operation

OUT PUT
SET UP

Method to output the machine information report

1 Select the item for outputting the machine information report.
2 Press the start key to output the report.

Method to set the machine installation date

1 Select the item for setting the machine installation date.
2 Press the start key to save the data of the installation date and total counter value at the time of

installation.

3 Press the stop/clear key to return to the screen for selecting an item.

Completion

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

U019 Displaying the ROM version

Description

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

Purpose

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

Method

1 Press the start key. The last six digits of the part number indicating the ROM version are displayed.

Display Description

MAIN
MMI
FONT
MEM1

Completion

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

Outputs the machine information report.
Sets the machine installation date.

Main-Engine ROM
Scanner MMI
Font ROM
Memory copy ROM IC

Description

1-4

U020 Initializing all data

Description

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

Purpose

Used when replacing the backup RAM on the main PCB.

Method

1 Press the start key. The screen for executing is displayed.
2 Press EXECUTE on the touch panel. It is displayed in reverse.
3 Press the start key. All data in the backup RAM is initialized, and the original settings for USA models are

set.
When initialization is complete, the machine automatically returns to the same status as when the main

switch is turned on.

Completion

To exit the maintenance mode without executing initialization, press the stop/clear key. The screen for
selecting a maintenance item No. is displayed.

1-4-9

2A0

1-4

Maintenance

item No.
U021 Initializing memories

Description

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

Purpose

Used to return the machine settings to the factory settings.

Method

1 Press the start key. The screen for executing is displayed.
2 Press EXECUTE on the touch panel. It is displayed in reverse.
3 Press the start key. All data other than that for adjustments due to variations between machines is

initialized.
When initialization is complete, the machine automatically returns to the same status as when the main

switch is turned on.

Completion

To exit the maintenance mode without executing initialization, press the stop/clear key. The screen for
selecting a maintenance item No. is displayed.

U022 Initializing backup data

Description

Initializes only the data set for the optical section.

Purpose

To be executed after replacing the scanner unit.

Method

1 Press the start key. The screen for executing is displayed.
2 Press SCANNER on the touch panel. EXECUTE is displayed.
3 Press EXECUTE on the touch panel. It is displayed in reverse.
4 Press the start key. The data for the optical section (U060 to 067, U088 to 099, U403 and U991) is

initialized.

Completion

To exit the maintenance mode, press the stop/clear key. The screen for selecting a maintenance item No. is
displayed.

Description

U024 Formatting the HDD

Description

Formats the HDD.

Purpose

Used to initialize the HDD when it is replaced in the field.

Method

1 Press the start key. The screen for executing is displayed.
2 Press EXECUTE on the touch panel. It is displayed in reverse.
3 Press the start key. The initialization of the HDD starts. The progress of the initialization is indicated in

percentage (0 to 100%).
When initialization is complete, the result is displayed.

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

Completion

To exit the maintenance mode without executing initialization, press the stop/clear key. The screen for
selecting a maintenance item No. is displayed.

1-4-10

2A0

Maintenance

item No.

U030 Checking motor operation

Description

Drives each motor.

Purpose

To check the operation of each motor.

Method

1 Press the start key. The screen for selecting an item is displayed.
2 Select the motor to be operated. The selected item is displayed in reverse and the operation starts.

Display Operation

MAIN MOTOR
FEED MOTOR

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

Completion

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

U031 Checking switches for paper conveying

Description

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

Purpose

To check if the switches for paper conveying operate correctly.

Method

1 Press the start key. A list of the switches, the on-off status of which can be checked, are displayed.
2 Turn each switch on and off manually to check the status.

When the on-status of a switch is detected, that switch is displayed in reverse.

Display Switches

FEEDA SW
FEEDB SW
FEEDC SW
FEEDD SW
FEEDE SW
FEED SW
R SW
EJE SW
BRA SW
REV SW
BRA3 SW
DUP PESW
DUP1 SW
DUP2 SW
DUP3 SW

Completion

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

The drive motor operates and developing bias is applied.
The paper conveying motor operates.
The paper feed motor operates.

Paper feed switch 1 (PFSW1)
Paper feed switch 2 (PFSW2)
Paper feed switch 3 (PFSW3)
Paper feed switch 4 (PFSW4)
Paper feed switch 5 (PFSW5)
Feed switch (FSW)
Registration switch (RSW)
Eject switch (ESW)
Feedshift switch (FSSW)
Switchback eject switch (SBESW)
Duplex feedshift switch (DUPFSSW)
Duplex jam detection switch (DUPJSW)
Duplex paper conveying switch 1 (DUPPCSW1)
Duplex paper conveying switch 2 (DUPPCSW2)
Duplex eject switch (DUPESW)

Description

1-4

1-4-11

2A0

1-4

Maintenance

item No.
U032 Checking clutch operation

Description

Turns each clutch on.

Purpose

To check the operation of each clutch.

Method

1 Press the start key. The screen for selecting an item is displayed.
2 Select the clutch to be operated. The selected item is displayed in reverse, and the clutch turns on

for 1 s.

Display Clutches

SB FEED
SB LIFT
PF D
PF E
LCF BCL
LCF P1CL
LCF P2CL
FEED B
FEED C
FEED D
FEED E
FEED

Bypass paper feed clutch (BYPPFCL)
Bypass lift clutch (BYPLCL)
Upper paper feed clutch (PFCL-U)
Lower paper feed clutch (PFCL-L)
Large paper deck conveying clutch (LPDCCL)
Large paper deck paper feed clutch 1 (LPDPFCL1)
Large paper deck paper feed clutch 2 (LPDPFCL2)
Feed clutch 2 (FCL2)
Feed clutch 3 (FCL3)
Feed clutch 4 (FCL4)
Feed clutch 5 (FCL5)
Feed clutch 1 (FCL1)

Description

Display Clutches

REGIST
DUP FWD
DUP REV
TC BELT

3 To turn each clutch on while a motor is driving, press the interrupt key before selecting the clutch. The

drive motor, paper feed motor and paper conveying motor turn on, and the selected clutch remains on
until the selected item is pressed.

If the upper or lower paper feed clutch is turned on while a motor is driving, paper is conveyed by the
rotation of the paper feed pulley, resulting in a paper jam. Be sure to remove the paper cassettes before
turning either of these clutches on.

4 To stop the motor drive, press the interrupt copy key.

Completion

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

U033 Checking solenoid operation

Description

Turns each solenoid on.

Purpose

To check the operation of each solenoid.

Method

1 Press the start key. The screen for selecting an item is displayed.
2 Select the solenoid to be operated. The selected item is displayed in reverse, and the solenoid turns on

for 1 s.

Registration clutch (RCL)
Duplex forwarding clutch (DUPFWDCL)
Duplex reversing clutch (DUPREVCL)
Transfer charger belt release clutch (TCBRCL)

1-4-12

2A0

Maintenance

item No.

U033

Display Solenoids

BRANCH
DUP FS
DUP PR
FIX WEB

MSW OFF

MSW OFF is selected when the operation of the main switch is checked in auto shutoff mode.

Completion

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

U034 Adjusting the print start timing

Adjustment

See pages 1-6-17 and 19.

U035 Setting folio size

Description

Changes the image area for copying onto folio size paper.

Purpose

To prevent the image at the trailing edge, or right or left side of the paper from not being copied by setting
the actual size of the folio paper used.

Method

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

Setting

1 Select the item to be set. The selected item is displayed in reverse, and the current setting is displayed in

the adjustment window.

2 Change the setting using the Up/Down keys.

Display

LENGTH DATA
WIDTH DATA

Feedshift solenoid (FSSOL)
Duplex eject switching solenoid (DUPESSOL)
Duplex pressure release solenoid (DUPPRSOL)
Fixing web solenoid (FWEBSOL)

The main switch turns off.

Setting

Length
Width

Setting range

330 to 356 mm
220 to 220 mm

Description

1-4

Initial setting

330
210

3 Press the start key. The value is set.

Completion

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

U036 Setting envelope size

Description

Changes the image area for printing onto an envelope when the optional printer unit is installed.

Purpose

To prevent the image at the trailing edge, or right or left side of the paper from not being printed by setting
the actual size of the envelop used.

Method

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

Setting

1 Select the item to be set. The selected item is displayed in reverse, and the current setting is displayed in

the adjustment window.

2 Change the setting using the Up/Down keys.

Display

LENGTH DATA
WIDTH DATA

3 Press the start key. The value is set.

Completion

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

Setting

Length
Width

Setting range

162 to 242 mm
98 to 162 mm

Initial setting

242
162

1-4-13

2A0

1-4

Maintenance

item No.
U037 Checking fan motor operation

Description

Energizes fan motors to turn them on.

Purpose

To check the operation of each fan motor.

Method

1 Press the start key. The screen for selecting an item is displayed.
2 Select the fan motor to be driven.

The selected fan motor is displayed in reverse, and operation starts.

Display Fan motor

SCANNER
COOL
FIXING
MC.
LSU
DUPLEX
EJECT
BLOW

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

Completion

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

Optical section fan motor
Cooling fan motor
Fixing unit fan motor
Main charger fan motor
LSU fan motor
Duplex fan motor
Eject fan motor
Blow fan motors 1 and 2

Description

U050 Setting the switchback drive

Adjustment

See page 1-6-68.

U051 Adjusting the amount of slack in the paper before registration

Adjustment

See page 1-6-21.

1-4-14

2A0

Maintenance

item No.

U053 Performing fine adjustment of the motor speed

Description

Performs fine adjustment of the speeds of the drive motor and paper conveying motor.

Purpose

Used to adjust the speed of the respective motors when the magnification in the auxiliary scanning direction
is not correct after the motor is replaced.

Method

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

Setting

1 Select the item to be set. The selected item is displayed in reverse, and the current setting is displayed in

the adjustment window.

2 Change the setting using the Up/Down keys.

Display

MAIN MOTOR
CONV MOTOR

Increasing the setting makes the motor speed faster and the image longer, and decreasing it makes the
speed slower and the image shorter.

When the speed of a motor is changed, that of the other motor will also change to the same value.

3 Press the start key. The value is set.

Interrupt copy mode

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

Correct values for an A3/11" x 17" output are:

A = 150 mm
B = 300 mm

Description

Drive motor speed adjustment
Paper conveying motor speed adjustment

Description

A

Setting range

0 to 14
0 to 14

Initial setting

5
5

1-4

B

Adjustment

1 Output an A3/11" × 17" VTC pattern in interrupt mode.
2 Measure A and B on the VTC pattern (Figure 1-4-3), and perform the following adjustments if they are

different from the correct sizes:

A: Drive motor adjustment
B: Paper conveying motor adjustment

Completion

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

Figure 1-4-3

1-4-15

2A0

1-4

Maintenance

item No.
U060 Adjusting the scanner input properties

Description

Adjusts the image scanning density in text, text and photo, or photo mode.

Purpose

Used when the entire image appears too dark or light in the specified mode.

Method

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

Setting

1 Change the setting using the Up/Down keys.

Display

IN γ adj:00

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

2 Press the start key. The value is set.

Interrupt copy mode

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

Completion

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

Supplement

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

• Exposure density gradient set in maintenance mode (U093)

• Auto and manual exposure set in the copy default item of the copier management mode

U061 Turning the exposure lamp on

Description

Turns the exposure lamp on.

Purpose

To check the exposure lamp.

Method

1 Press the start key. The screen for selecting an item is displayed.
2 Press the start key. The exposure lamp lights.
3 To turn the exposure lamp off, press the stop/clear key.

Completion

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

Setting range

1 to 23

Initial setting

12

Description

U063 Adjusting the shading position

Description

Changes the shading position.

Purpose

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

Method

1 Press the start key. The screen for adjustment is displayed.
2 Change the setting using the Up/Down keys.

Description

Shading position

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

3 Press the start key. The value is set.

Interrupt copy mode

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

Completion

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

Setting range

–8 to +2

1-4-16

Initial setting 0Change in value per step

0.17 mm

2A0

Maintenance

item No.

U065 Adjusting the scanner magnification

Adjustment

See pages 1-6-35 and 36.

U066 Adjusting the scanner leading edge registration

Adjustment

See page 1-6-38.

U067 Adjusting the scanner center line

Adjustment

See page 1-6-37.

U070 Adjusting the DF magnification

Adjustment

See page 1-6-70.

U071 Adjusting the DF scanning timing

Adjustment

See pages 1-6-72 and 73.

U072 Adjusting the DF center line

Adjustment

See page 1-6-71.

U073 Checking scanner operation

Description

Simulates the scanner operation under arbitrary conditions.

Purpose

To check scanner operation.

Method

1 Press the start key. The screen for selecting an item is displayed.
2 Select the item to be changed. The selected item is displayed in reverse.
3 Change the setting using the Up/Down keys.

Display

ZOOM
SIZE
LAMP

Operating conditions

ZOOM Magnification
Original size
LAMP on and off of

Setting range

25 to 400%
See below.
0 (off) or 1 (on)

the exposure lamp

Original sizes for each setting in SIZE

Setting

8

9
18
36
39
40
41

A4
B5
11"
A3
B4
A4R
B5R

Setting

42

1

×

8

/

"

2

47
52
53
55
56
58

Original sizeOriginal size

A5R
Folio
11"
11"

1

8

/

2

1

8

/

2

1

5

/

2

Description

×

17"

×

15"
" × 14"
" × 11"

1

" × 8

/

"

2

1-4

4 Press the start key. Scanning starts under the selected conditions.
5 To stop operation, press the stop/clear key.

Completion

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

1-4-17

2A0

1-4

Maintenance

item No.
U074 Adjusting the DF automatically

Description

Makes auto adjustments for the DF scanning section given below using the specified original.

• Adjusting the DF magnification (U070)

• Adjusting the DF scanning timing (U071)

• Adjusting the DF center line (U072)

• Adjusting margins for DF original reading (U404)

When this maintenance item is performed, the settings in U070, U071, U072 and U404 are also changed.

Purpose

Used to make auto adjustments for the DF scanning section.

Method

1 Place the specified original (P/N:2AC68241) on the DF.
2 Press the start key. Auto adjustment starts. When adjustment is complete, each adjusted value is

displayed.

Display Description

CONVEY SPEED
LEAD EDGE ADJ
TRAIL EDGE ADJ
ADJUST DATA DATA (simplex)

DATA (duplex, front)

DATA (duplex, back)
DF A MARGIN.
DF B MARGIN.
DF C MARGIN.
DF D MARGIN.

Description

DF magnification in the auxiliary scanning direction
DF leading edge registration
DF trailing edge registration
DF original center line

DF scanning margin (A side)
DF scanning margin (B side)
DF scanning margin (C side)
DF scanning margin (D side)

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

Completion

Press the stop/clear key after auto adjustment is complete. The screen for selecting a maintenance item is
displayed.

If the stop/clear key is pressed during auto adjustment, adjustment stops and no settings are changed.

1-4-18

2A0

Maintenance

item No.

U080 Adjusting exposure in toner economy mode

Description

Adjusts the image density in the eco-print mode.

Purpose

To increase or decrease the image density in the eco-print mode.

Method

Press the start key. The screen for execution is displayed.

Setting

1 Adjust the preset value using the Up/Down keys.
* Since this value is related to the automatic exposure adjustment in the copy initial setting mode, ensure

that the exposure step of the automatic exposure is at the center before adjusting.

Display

Exposure in toner economy mode

2 Press the start key. The setting is set, and the screen for maintenance item No. is displayed.

Completion

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

U088 Setting the input filter (moiré reduction mode)

Description

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

Purpose

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

Method

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

Setting

1 Select ON or OFF. The selected item is displayed in reverse.

Display Description

ON
OFF

Initial setting: OFF

If moiré on the copy image is significant, change the setting to ON. Note that when the moiré reduction
mode is turned on, the resolution may be slightly reduced.

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

Completion

To exit the maintenance mode without changing the current setting, press the stop/clear key. The screen for
selecting a maintenance item No. is displayed.

Moiré reduction mode
Normal copy mode

Setting range

–12 to 0

Description

Initial value

–6

1-4

1-4-19

2A0

1-4

Maintenance

item No.
U089 Outputting a PG pattern

Description

Selects and outputs the PG pattern created in the copier.

Purpose

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

Method

1 Press the start key. The screen for selecting an item is displayed.
2 Select the PG pattern to be output.

Display

GRAYSCALE To check the laser scanner unit

MONO-LEVEL To check the drum quality.

Description

PG pattern to be output Purpose

engine output characteristics.

256-LEVEL To check resolution

reproducibility in printing.

1 DOT-LINE To check fine line reproducibility.

To adjust the position of the laser
scanner unit (lateral squareness)

3 To change the output conditions for MONO-LEVEL, change the setting using The Up/Down keys.

Description

Output conditions for MONO-LEVEL

Increasing the setting makes the density higher, and decreasing it makes the density lower. Entirely
white paper is output when the setting is 0, and entirely black paper is output when it is 255.

4 Press the interrupt key. The screen for copy mode is displayed.
5 Press the start key. A PG pattern is output.

Completion

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

Setting range

0 to 255

Initial setting

0

1-4-20

2A0

Maintenance

item No.

U091 Checking shading

Description

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

Purpose

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

Also to check the causes for a white or black line appearing longitudinally.

Method

1 Press the start key. The screen for selecting an item is displayed.
2 Select the item to be operated. The selected item is displayed in reverse.

Display

SHD BEFORE
SHD AFTER

3 Press the start key. Operation starts.

Scanning is performed under the selected conditions and the result is displayed.
When scanning is performed before shading, the scan value at the machine center should be slightly

different from those at the machine front and rear. When scanning is performed after shading, there
should be no difference between respective values. Any differences between the values at machine front
and rear indicates that scanner problem causes the fixing unevenness.

If the displayed results indicate no shading problems, the fixing unevenness (uneven copy density) is
caused by factors other than in the scanner section (shading or CCD).

If a black line appears, the cause may assumed to be based on the results of the scanning operation
before shading: if a white line appears, they may be assumed based on the results of the scanning
operation after shading. Note that depending on the thickness and location of the black or white line, it
may not be possible to use this method to determine the cause. This is because the displayed values
obtained from scanning at the limit of nine points are insufficient to provide significant information.

Description

Operation

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

1-4

20 mm from the machine left

200 mm from the machine left

400 mm from the machine left

100 mm from the machine

center toward machine front

Figure 1-4-4

4 Press the stop/clear key. The screen for selecting an item is displayed.

Completion

Press the stop/clear key. The screen for entering a maintenance item is displayed.

: 011 024 015
: 001 000 000
: 004 004 000

Machine center

100 mm from machine

center toward machine rear

1-4-21

2A0

1-4

Maintenance

item No.
U092 Adjusting the scanner automatically

Description

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

• Adjusting the scanner center line (U067)

• Adjusting the scanner magnification in the main scanning direction (U065)

• Adjusting the scanner leading edge registration (U066)

• Adjusting scanner magnification in the auxiliary direction (U065)

• Adjusting margins for reading an original on the contact glass (U403)

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

Purpose

Used to make respective auto adjustments for the scanner.

Method

1 Place the specified original (P/N: 2AC68241) on the contact glass.
2 Press the start key. The screen for executing is displayed.
3 Press the start key. Auto adjustment starts. When adjustment is complete, each adjusted value is

displayed.

Display

SCAN CENTER ADJ
MAIN SCAN ADJ
SCAN TIMING ADJ
SUB SCAN ADJ
SCAN A MARGIN
SCAN B MARGIN
SCAN C MARGIN
SCAN D MARGIN

Description

Scanner center line
Scanner magnification in the main scanning direction
Scanner leading registration
Scanner magnification in the auxiliary direction
Scanner reading margin (A side)
Scanner reading margin (B side)
Scanner reading margin (C side)
Scanner reading margin (D side)

Description

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

Completion

Press the stop/clear key after auto adjustment is complete. The screen for selecting a maintenance item is
displayed.

If the stop/clear key is pressed during auto adjustment, adjustment stops and no settings are changed.

1-4-22

2A0

Maintenance

item No.

U093 Setting the exposure density gradient

Description

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

Purpose

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

Start

1 Press the start key. The screen for selecting an item is displayed.
2 Select the image mode to be adjusted. The screen for the selected item is displayed.

Display

TEXT
MIXED
PHOTO

Setting

1 Select the item to be adjusted. The selected item is displayed in reverse and the current setting is

displayed in the adjustment window.

2 Adjust the setting using the Up/Down keys.

Display

DARKER
LIGHTER

Description

Density in text mode
Density in text and photo mode
Density in photo mode

Description

Change in density
when manual density is set dark
Change in density
when manual density is set light

Description

Setting range

0 to 3
0 to 3

1-4

Initial setting

0
0

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

Image density

Dark

Set to DARKERSet to LIGHTER

Light

Light

Density adjustment range: Normal

Density adjustment range: Special area

Figure 1-4-5 Exposure density gradient

3 Press the start key. The value is set.
4 To return to the screen for selecting an item, press the stop/clear key.

Interrupt copy mode

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

Completion

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

Center

Setting: 0Setting: 3

Dark

Density adjustment

1-4-23

2A0

1-4

Maintenance

item No.
U099 Checking and setting the original size detection sensor

Description

Checks the operation of the original size detection sensor and sets the sensing threshold value.

Purpose

To adjust the sensitiveness of the sensor and size judgement time if the original size detection sensor
malfunctions frequently due to incident light or the like.

Start

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

* The screen for executing each item is displayed.

Display

DATA
B/W LEVEL

Method to display the data for the sensor

1 Press the start key. The detection sensor transmission data is displayed.

Description

Displaying detection sensor transmission data
Setting detection sensor threshold value
Setting original size judgment time

Rear of machine

Center of machine

Front of machine

Description

: 123 123 123
: 123 123 123
: 255 255 255

Figure 1-4-6

2 To return to the screen for selecting an item, press the stop/clear key.

Setting

1 Select an item to be set.

Display

LEVEL
WAIT TIME
ORIGINAL AREA
SIZE

* Time from activation of the original detection switch (ODSW) to original size judgment

Method to set the detection threshold value

1 Adjust the preset value using the Up/Down keys.
* A larger value increases the sensor sensitivity, and a smaller value decreases it.

2 Press the start key. The value is set.
3 To return to the screen for selecting an item, press the stop/clear key.

Method to set the original size judgment time

1 Adjust the preset value using the Up/Down keys.
* A larger value increases the original size judgment time, and a smaller value decreases it.

2 Press the start key. The value is set.
3 To return to the screen for selecting an item, press the stop/clear key.

Description

Detection sensor threshold value
Original size judgment time*
Original size detection position display (mm)
Detected original size display

1-4-24

Completion

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

2A0

Maintenance

item No.

U100 Setting the surface potential

Description

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

Purpose

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

Start

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

Display

DSP DATA
MC ON
MC ON/OFF
LASER ON/OFF

Method for main charger output

1 Select the main charger output on the screen for selecting an item: select one from MC ON, MC ON/OFF

or LASER ON/OFF on the touch panel. The selected operation starts.

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

Setting the grid control voltage

1 Press the DSP DATA on the touch panel of the screen for selecting an item.
2 Change the setting using the Up/Down keys.

Description

Grid control voltage

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

3 Press the start key. The value is set.

Interrupt copy mode

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

Completion

Press the stop/clear key at the screen for selecting an item when main charger output stops. The screen for
selecting a maintenance item No. is displayed.

Description

Changing the grid control voltage
Turning the main charger on
Turning the main charger on and off
Turning the main charger on and the laser scanner unit on and off

Setting range

77 to 230

Description

1-4

Initial setting

160

1-4-25

2A0

1-4

Maintenance

item No.
U101 Setting high voltages

Description

Changes the transfer voltage by changing the transfer control voltage. Also checks the transfer output
voltage.

Purpose

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

Start

1 Press the start key. The screen for selecting an item is displayed.
2 Select an item to be set or checked. The screen for the selected item is displayed.

Display

TC SET

Setting the developing bias

1 Select the item to be adjusted. The selected item is displayed in reverse, and the current setting is

displayed in the adjustment window.

2 Change the setting using the Up/Down keys.

Display Operation

CONT DATA
CONT DATA2
TC ON

Description

Description

Setting and checking the transfer voltage

Transfer output voltage for simplex copying
(onto paper from the cassette)
Transfer output voltage for duplex copying
(onto the second face)
Outputting the transfer voltage

Setting range

0 to 255
0 to 255

Initial setting

150
150

Increasing the setting makes the transfer voltage higher, and decreasing it makes the voltage lower.
Press the TC ON on the touch panel. The currently set transfer voltage is output. To stop the transfer

voltage output, press the stop/clear key.

3 Press the start key. The value is set.
4 To return to the screen for selecting in item, press the stop/clear key.

Interrupt copy mode

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

Completion

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

U102 Setting the cleaning interval for the charger

Description

Executes a cleaning operation for the charger and changes the intervals at which the charger is cleaned.

Purpose

To check the cleaning operation for the charger. Also to change the intervals for the operation. Making the
intervals longer decreases the stand-by time when starting copying.

Method

1 Press the start key. The screen for selecting an item is displayed.
2 To execute the cleaning operation, press TEST RUN. The cleaning operation for the transfer charger is

executed once.

Setting

1 Change the setting using the Up/Down keys.

Description Setting range

Charger cleaning operation intervals 0 to 20

When set to 3, the charger is cleaned every 3000 copies (3 by 1000) counted after the main switch is
turned on. When set to 0, the charger is not cleaned.

2 Press the start key. The value is set.

Completion

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

Initial setting3Change in value per step

1000 copies

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Maintenance

item No.

U110 Checking/clearing the drum count

Description

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

Purpose

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

Method

Press the start key. The drum counter count is displayed.

Clearing

1 Press CLEAR on the touch panel.
2 Press the start key. The count is cleared, and the screen for selecting a maintenance item No. is

displayed.

Setting

1 Enter a six-digit count using the numeric keys.
2 Press the start key. The count is set, and the screen for selecting a maintenance No. is displayed.

Completion

To exit the maintenance mode without changing the count, press the stop/clear key. The screen for
selecting a maintenance item No. is displayed.

U130 Initial setting for the developer

Description

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

Purpose

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

Method

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

Display

CONTROL
FIRST T ARGET
HUMID

Description

Toner sensor control voltage
Toner control reference voltage
Absolute humidity

Description

1-4

The toner sensor output value is displayed on the right side of the screen.

Supplement

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

• Renewing the toner sensor control voltage (U131)

• Renewing the toner control reference voltage (U156)

• Clearing the developing drive time (U157)

• Clearing the developing count (U158)

• Resetting the toner feed start level and toner empty detection

Completion

After initial setting is complete, press the stop/clear key. The screen for selecting a maintenance item No. is
displayed.

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1-4

Maintenance

item No.
U131 Setting the toner sensor control voltage

Description

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

Purpose

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

Method

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

Setting

1 Change the setting using the Up/Down keys.

Description

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

2 Press the start key. The value is set.

Completion

Press the stop/clear key. The screen for selecting a maintenance item is displayed.

U132 Replenishing toner forcibly

Description

Replenishes toner forcibly until the toner sensor output value reaches the toner control level.

Purpose

Used when the toner empty is detected frequently.

Method

1 Press the start key. The screen for executing is displayed.
2 Press the start key. Operation starts, and the current data is displayed.

Toner is replenished until the toner sensor output value reaches the toner control level.
To stop operation, press the start/clear key.

Display

TARGET (NOW)
CONTROL (NOW)
HUMID

Description

Current toner control level
Current toner sensor control voltage
Absolute humidity

Setting range

0 to 255

Description

Initial setting

128

The current toner sensor output value is displayed on the right side of the screen.

Completion

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

U135 Checking toner motor operation

Description

Drives the toner feed motor or toner agitation motor.

Purpose

To check the operation of the toner feed motor or toner agitation motor.

Caution

Note that driving either of the motors unnecessarily long may cause a toner jam, resulting in machine
lockup. Be sure to drive each motor for just several seconds.

Method

1 Press the start key. The screen for selecting an item is displayed.
2 Select the motor to be driven. The selected motor is displayed in reverse, and operation starts.

Description

MOTOR 1
MOTOR 2

3 To stop operation, press the stop clear key.

Completion

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

Operation

Toner feed motor drive
Toner agitation motor drive

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Maintenance

item No.

U136 Turning the toner level detection function on/off

Description

Turning the control based on the toner level sensor output on/off.

Purpose

To enable copying using the toner in the developing section after the toner level in the toner hopper
decreases, by turning the control function off

Method

Press the start key.

Setting

1 Press ON or OFF to change the operation.

Display

ON
OFF

Initial setting: ON

2 Press the start key. The setting is set , and the screen for entering a maintenance item is displayed.

Completion

To exit this maintenance item without changing the current setting, press the stop/clear key. The screen for
selecting a maintenance item No. is displayed.

U137 Checking the toner level detection sensor

Description

Displays the detection status of the toner level detection sensor and toner hopper lockup detection sensor.

Purpose

To check the toner level in the toner hopper.

Method

1 Press the start key. The detected status of the sensor is displayed.

Display

TE SW

When there is toner or if the sensor connector is disconnected, on is detected , and the corresponding
display is displayed in reverse.

Completion

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

Description

Controls based on the detection by the toner sensor
detection sensor.
Ignores the detection by the toner level detection sensor.

Description

Toner level detection sensor (toner level in the toner hopper)

Description

1-4

U155 Displaying the toner sensor output

Description

Displays the toner sensor output value , and related data.

Purpose

To check the toner sensor output value.

Method

1 Press the start key. The screen for executing is displayed.
2 Press the start key. The current data is displayed.

Display

TARGET (NOW)
CONTROL (NOW)

HUMID

The current toner sensor output value is displayed on the right side of the screen.

Completion

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

Description

Current toner control level
(corrected value for humidity and drive time)
Current toner sensor control voltage
Absolute humidity

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Maintenance

item No.
U156 Changing the toner control level

Description

Changes the toner control reference voltage set in maintenance item U130 or the toner control level or the
toner empty level to be determined by the difference from the toner control level. The setting for this
maintenance item does not need to be changed.

Purpose

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

Method

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

Display

TARGET
EMPTY
FIRST T ARGET

Setting for the toner control level

1 Press TARGET.
2 Change the setting using the Up/Down key.

Description

Toner control level

Increasing the setting makes the toner density lower.

3 Press the start key. The value is set.

Setting for the toner empty level

1 Press EMPTY.
2 Change the setting using the Up/Down key.

Description

Toner control level
Difference between the toner control level and toner empty level
Toner control reference voltage for initial developer setting

Setting range

0 to 255

Description

Initial setting

128

Description

Difference between the toner control level
and the toner empty level

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

3 Press the start key. The value is set.

Setting for the toner control refernce voltage

1 Press FIRST TARGET.
2 Change the setting using the Up/Down key.

Description

Toner control reference voltage

3 Press the start key. The value is set.

Completion

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

Setting range

0 to 255

Setting range

0 to 255

Initial setting

102

Initial setting

30

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Maintenance

item No.

U157 Checking/clearing the developing drive time

Description

Checks or clears the developing drive time, which is used as a reference when correcting the toner control.
It is automatically cleared when U130 is executed.

Purpose

To check the developing drive time after replacing the developer.

Method

Press the start key. The developing drive time is displayed in minutes.

Clearing

1 Press CLEAR on the touch panel.
2 Press the start key. The count is set, and the screen for selecting a maintenance item No. is displayed.

Setting

1 Enter a five-digit drive time (in minutes) using the numeric keys.
2 Press the start key. The time is set, and the screen for selecting a maintenance No. is displayed.

Completion

To exit the maintenance mode without changing the time, press the stop/clear key. The screen for selecting
a maintenance item No. is displayed.

U158 Checking/clearing the developing count

Description

Checks or clears the developing count, which is used as a reference when correcting the toner control. It is
automatically cleared when U130 is executed.

Purpose

To check the developing count after replacing the developer.

Method

Press the start key. The developing count is displayed.

Clearing

1 Press CLEAR on the touch panel.
2 Press the start key. The count is set, and the screen for selecting a maintenance item No. is displayed.

Setting

1 Enter a six-digit count using the numeric keys.
2 Press the start key. The count is set, and the screen for selecting a maintenance No. is displayed.

Completion

To exit the maintenance mode without changing the count, press the stop/clear key. The screen for
selecting a maintenance item No. is displayed.

Description

1-4

U160 Applying toner to the cleaning blade

Description

Applies toner to the cleaning blade.

Purpose

To apply toner to the drum to coat the cleaning blade. To be executed when replacing or cleaning the
cleaning blade or the drum.

Method

1 Press the start key. The screen for executing is displayed.
2 Press the start key. Operation starts.

When the operation is complete, the screen for selecting a maintenance item No. is displayed after open
and close the front cover.

Completion

To exit this maintenance item without performing operation, press the stop/clear key. The screen for
selecting a maintenance item No. is displayed.

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1-4

Maintenance

item No.
U161 Setting the fixing control temperature

Description

Changes the fixing control temperature.

Purpose

Normally no change is necessary. However, can be used to prevent curled or creased paper, or solve a
fixing problem on thick paper.
Also used to output a test pattern for measuring fixing pressure.

Method

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

Setting

1 Select the item to be set. The selected item is displayed in reverse, and the current setting is displayed in

the adjustment window.

2 Change the setting using the Up/Down key.

Display

CONTROL TEMP

FIRST TEMP

SECOND TEMP

RUNNING TIME

The respective temperatures are to be set such that CONTROL TEMP ≥ SECOND ≥ TEMPFIRST
TEMP.

3 Press the start key. The value is set.

Completion

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

Description

Normal stabilization
fixing temperature
Primary stabilization
fixing temperature
Secondary stabilization
fixing temperature
Aging time after
secondary stabilization

Description

Setting range

170 to 200 (°C)
140 to 200 (°C)
170 to 200 (°C)
0 to 180 (s)

Initial setting

185
165
185

90

U162 Stabilizing fixing forcibly

Description

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

Purpose

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

Method

1 Press the start key. The screen for executing is displayed.
2 Press the start key. The forced stabilization mode is entered, and stabilization operation stops. The

screen for selecting a maintenance item No. is displayed.
To exit the forced stabilization mode, turn the power off and on.

Completion

To exit this maintenance item without executing forced fixing stabilization, press the stop clear key.

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Maintenance

item No.

U194 Setting the fixing web drive

Description

Sets the interval (number of copies) for turning on the fixing web solenoid.

Purpose

To be executed when the cleaning felt becomes extremely soiled.

Method

1 Press the start key. The screen for executing is displayed.
2 Input numbers using Up/Down keys (setting range is 1 to 40).

Initial setting:30

3 Press the start key. The setting is set.

Completion

To exit this maintenance item without changing the current setting, press the stop/clear key. The screen for
selecting a maintenance item No. is displayed.

U196 Turning the fixing heater on

Description

Turns the fixing heater on.

Purpose

To check fixing heaters M or S.

Method

1 Press the start key. The screen for selecting an item is displayed.
2 Select the heater to be turned on. The selected heater turns on for 3 s and then turns off.

Display

MAIN
SUB

Completion

Press the stop/clear key when fixing motors M and S are off. The screen for selecting the maintenance item
No. is displayed.

Description

Fixing heater M (H1)
Fixing heater S (H2)

Description

1-4

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Maintenance

item No.
U198 Setting the fixing phase control

Description

Sets the use of fixing phase control to reduce electrical noise generated by the copier.

Purpose

Normally no change is necessary. If electrical noise generated by the copier causes flickering of the lights
around the copier, select fixing phase control to reduces the noise.

Method

Press the start key.

Setting

1 Press ON or OFF to change operation.

Display

ON
OFF

Initial setting: ON for metric and OFF for inch models

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

Completion

To exit this maintenance item without changing the current setting, press the stop/clear key. The screen for
selecting a maintenance item No. is displayed.

U200 Turning all LEDs on

Description

Turns all the LEDs on the operation panel on.

Purpose

To check if all the LEDs on the operation panel light

Method

Press the start key. All the LEDs on the operation panel light.

Completion

Press the stop/clear key or wait for 10 s. The LEDs turns off, and the screen for selecting a maintenance
mode is displayed.

Description

Fixing phase control present
Fixing phase control absent

Description

U201 Initializing the touch panel

Description

Automatically correct the positions of the X- and Y-axes of the touch panel.

Purpose

To automatically correct the display positions on the touch panel after it is replaced.

Method

1 Press the start key. The screen for executing is displayed, and the + key displayed at the upper left of the

touch panel flashes.

2 Press on the center of the + key. The + key on lower right flashes.
3 Press the center of the flashing +. Initialization of the touch panel is complete, and the screen for

selecting a maintenance item No. is displayed.

Completion

To exit this maintenance item without initializing, press the stop/clear key. The screen for selecting a
maintenance mode No. is displayed.

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