Mita-Kyocera KM-S4850W Service Manual

SERVICE

MANUAL

Published in Dec. ’01

843B0110

CAUTION

Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent
type recommended by the manufacturer. Dispose of used batteries according to the
manufacturer’s instructions.

CAUTION

Double-pole/neutral fusing.

Safety precautions

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

Safety warnings and precautions

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

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

compliance with warning messages using this symbol.

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

with warning messages using this symbol.

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

compliance with warning messages using this symbol.

Symbols

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

General warning.

Warning of risk of electric shock.

Warning of high temperature.

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

General prohibited action.

Disassembly prohibited.

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

General action required.

Remove the power plug from the wall outlet.

Always ground the copier.

1. Installation Precautions

WARNING

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

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

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

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

CAUTION:

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

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

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

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

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

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

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

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

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

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

medical attention. ..............................................................................................................................

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

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

2. Precautions for Maintenance

WARNING

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

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

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

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

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

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

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

serious accident. ...............................................................................................................................

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

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

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

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

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

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

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

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

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

CAUTION

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

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

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

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

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

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

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

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

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

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

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

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

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

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

• After maintenance, always check that all the parts, screws, connectors and wires that were

removed, have been refitted correctly. Special attention should be paid to any forgotten

connector, trapped wire and missing screws. ..................................................................................

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

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

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

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

· Ventilate the room well while using grease or solvents.

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

· Always wash hands afterwards.

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

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

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

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

3. Miscellaneous

WARNING

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

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

CONTENTS

1-1 Specifications

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

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

(1) Main unit ....................................................................................................................................... 1-1-2

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

1-1-3 Machine cross sectional view ............................................................................................................... 1-1-4

1-1-4 Machine drive system .......................................................................................................................... 1-1-5

1-2 Handling Precautions

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

1-3 Installation

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

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

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

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

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

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

1-4 Maintenance Mode

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

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

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

(3) Contents of maintenance mode items .......................................................................................... 1-4-6

3B0

1-5 Troubleshooting

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

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

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

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

1-5-2 Self-diagnostic function ........................................................................................................................ 1-5-4

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

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

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

(1) No image (entirely white). ............................................................................................................. 1-5-6

(2) Part or all of the image is solid black. ........................................................................................... 1-5-6

(3) Image is too light. .......................................................................................................................... 1-5-7

(4) Background is visible. ................................................................................................................... 1-5-7

(5) A white line appears longitudinally. ............................................................................................... 1-5-7

(6) A black line appears longitudinally. ............................................................................................... 1-5-8

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

(8) Image is blurred. ........................................................................................................................... 1-5-8

(9) The leading edge of the image is consistently misaligned with the original. ................................. 1-5-9

(10) The leading edge of the image is sporadically misaligned with the original. ................................ 1-5-9

(11) Image is out of focus. .................................................................................................................... 1-5-9

(12) The center of the image is misaligned with the original. ............................................................. 1-5-10

(13) One forth the A0 width of the image is white. ............................................................................. 1-5-10

(14) One forth the A0 width of the image is black. ............................................................................. 1-5-10

1-5-4 Electrical problems ............................................................................................................................. 1-5-11

(1) The original feed motor does not operate. .................................................................................. 1-5-11

(2) The right or left xenon lamp does not light. ................................................................................. 1-5-11

(3) The right or left xenon lamp does not go off. .............................................................................. 1-5-11

(4) The scan stop key does not operate. .......................................................................................... 1-5-11

1-5-5 Mechanical problems ......................................................................................................................... 1-5-12

(1) No original conveying. ................................................................................................................. 1-5-12

(2) Original jam. ................................................................................................................................ 1-5-12

1-1-1

3B0

1-6 Assembly and Disassembly

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

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

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

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

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

(2) Adjusting scanning magnification ................................................................................................. 1-6-6

(3) Adjusting the scanner leading edge registration ........................................................................... 1-6-7

(4) Adjusting the optical axis (center line) .......................................................................................... 1-6-8

(5) Adjusting the image width in the main scanning direction ............................................................ 1-6-9

(6) Adjusting the exposure amount .................................................................................................. 1-6-10

(7) Adjusting the automatic exposure ............................................................................................... 1-6-11

1-6-3 Image formation section ..................................................................................................................... 1-6-12

(1) Checking the drum surface potential .......................................................................................... 1-6-12

1-6-4 Paper feed section ............................................................................................................................. 1-6-13

(1) Adjusting printing magnification .................................................................................................. 1-6-13

(2) Adjusting the print start timing ..................................................................................................... 1-6-14

(3) Adjusting the standard cut length ............................................................................................... 1-6-15

(4) Adjusting the synchronized cut length ........................................................................................ 1-6-16

(5) Adjusting the long copy cut length .............................................................................................. 1-6-17

(6) Adjusting the trailing edge margin .............................................................................................. 1-6-18

1-7 Requirements on PCB Replacement

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

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

1-7-3 Upgrading the version of the flash ROM firmware ............................................................................... 1-7-2

2-1 Mechanical construction

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

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

(2) CIS section .................................................................................................................................... 2-1-4

2-2 Electrical Parts Layout

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

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

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

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

2-3 Operation of the PCBs

2-3-1 IPU PCB ............................................................................................................................................... 2-3-1

2-3-2 Operation unit PCB .............................................................................................................................. 2-3-6

2-3-3 Scanner PCB ....................................................................................................................................... 2-3-9

2-3-4 Original motor PCB ............................................................................................................................ 2-3-13

2-3-5 Left (right) inverter PCB ..................................................................................................................... 2-3-16

2-4 Appendixes

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

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

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

List of maintenance parts ............................................................................................................................... 2-4-5

General wiring diagram .................................................................................................................................. 2-4-6

1-1-2

1-1-1 Specification

Copying method .............................Indirect electrostatic

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

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

Paper.............................................. Plain paper: 64 – 80 g/m

Special paper: Vellum, film

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

36" × 48" – 8

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

36" (W) × 237" (L) (64 – 80 g/m

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

36" × 48" – 8

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

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

Copying speed ............................... 2.6 ppm printer: 2 sheets/minute for A0/36" × 48",

4 sheets/minute for A1/36" × 24"

3 ppm printer: 3 sheets/minute for A0/36" × 48",

6 sheets/minute for A1/36" × 24"

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

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

Reading system ............................. Scanning exposure of moving original

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

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

Writing system ................................ LED (600 × 600 dpi)

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

Expansion memory ........................ Standard 168-pin type DIMM (64MB, 128MB, 256MB, 512MB)

Memory (for the internal server) ..... 256MB as standard (3 ppm printer: 512MB at the maximum)

Machine dimensions ...................... 1330 (W) × 643 (D) × 482 (H) mm

3

/8" (W) × 125/16" (D) × 19" (H)

52

Installation dimensions ................... 1330 (W) × 713 (D) mm

523/8" (W) × 281/16" (D)

Weight ............................................Approx. 62 kg/136.4 lbs.

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

Options ........................................... Roll unit, original tray, key counter, carrier sheet and expansion memory

2

2

1

/2" × 11" (64 – 80 g/m2)

1

/2" × 11" (64 – 80 g/m2)

)

2

2

)

)

2

)

2

)

2

)

3B0

• Scanner driver
TWAIN Souce (recommended operationg environment)

IBM PC-AT or compatible

OS

CPU

RAM

Free hard disk space

CD-ROM drive

Printer Port

Windows 95 (OSR2)/98 (Second Edition) /Me/NT4.0 (with service PACK 5 or later installed)/2000

266 MHz Celeron or faster

128MB or more

300MB

One drive

One 100 BASE-TX or 10 BASE-T port (shared with printer)

1-1-1

3B0

1-1-2 part names and functions

(1) Main unit

6

12341 5

7

8

9

1-1-2

Figure 1-1-1

1 Original guides
2 Original cover
3 Original leading edge cover
4 Original loop guide
5 Operation panel
6 Original table
7 Original holders
8 Contact glass
9 Network interface connector

(2) Operation panel

Inch

Metric

3B0

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

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

Figure 1-1-2

1-1-3

3B0

1-1-3 Machine cross sectional view

Optical section

Original conveying section

Figure 1-1-3 Machine cross sectional view

Original conveying path

1-1-4

1-1-4 Machine drive system

3B0

Figure 1-1-4

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

1-1-5

1-2-1 Installation environment

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

2. Humidity: 15% – 85% RH

3. Installation location

• Avoid locations with direct sunlight or bright areas such as near windows or with strong lighting.

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

• Avoid areas with excessive dust or vibration.

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

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

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

• Choose a location with adequate ventilation.

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

1

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

3B0

A

B

3

A: 1330 mm/52

/8"

C

B: 482 mm/19"
C: 643 mm/125/16"

Figure 1-2-1 Installation measurements

1-2-1

1-3-1 Unpacking and installing the scanner

(1) Installation procedure

Unpack the scanner.

—

1

⁄

fi

3B0

#

·

%

(

^&

1 Machine body
2 Original loop guide
3 Scanner interface PCB ass'y
4 Junction wiring A, interface PCB
5 Junction wiring B, interface PCB
6 Junction wiring, scanner power

supply

7 Junction wiring, printer unit
8 DIMM
9 Clamp, EMT-3N
0 Clamp, GNK-5N
! Open bushing

$

(

¤

^*

45
67

·

Figure 1-3-1

@ BVM4 × 06 cross-head

bronze binding screws

# Outer case
$ Skid
% Bottom pad
^ Pad A
& Pad B
* Pad C
( Pad D
) Accessory case
⁄ Machine cover

)

3fl

90!
@‡

2‹

¤ Barcode label
‹ Polyethylene bag
› Hinge joints
fi Air cap bag
fl Air cap bag
‡ Vinyl bag
° Top board

· Pad E
‚ Polyethylene bag
ΠAir cap bag
„ Installation guide

¤

›

‚

„

8Œ

1-3-1

3B0

Screws

Main PCB cover

1. Remove eight screws and M4 × 6 raised
binding screw, loosen the three screws at the
bottom, and remove the rear cover.

Screws

2. Remove five screws, and remove the main PCB
cover.

Screws

M4 × 6 raised
binding screw

Rear cover

Figure 1-3-2

1-3-2

Figure 1-3-3

3. From the rear side of the main body, unlock the
clamps at the lower left of the controller cover
located at the right side, remove the connector
and the six screws, and then remove the
controller cover.

3B0

Controller cover

Screws

Clamps

Connector

4. Lower the two levers at the front of the main
unit (pull them out and down), and pull out the
attachment unit.

Figure 1-3-4

Levers

Attachment unit

Figure 1-3-5

1-3-3

3B0

5. Loosen two screws and remove the main unit's
left rear upper cover.

6. Remove four screws, loosen two screws, and
remove the main unit's left rear lower cover.

Left rear

upper cover

Screw

Screw

Screw

Screws

Left rear

lower cover

7. Remove four screws , and remove the scanner
interface retainer .

8. Remove the network connector.

Network connector

Figure 1-3-6

Screws

Scanner interface

retainer

Screws

Figure 1-3-7

1-3-4

9. Put the 9-pin connector side of the Junction
Wiring and Printer Unit near the main PCB and
the 6-pin connector side near the right side of
the controller unit, and then lock the seven wire
saddles and lay it down.

3B0

Juction Wiring and

Printer unit

10. Insert DIMM into the memory slot of the
controller unit until the hooks on both sides are
closed.

9 pin

Memory slot

Hook

Figure 1-3-8

DIMM

Figure 1-3-9

Wire saddles

6 pin

Hook

11. Put the connectors of the Junction Wiring A,
Interface PCB and the Junction Wiring B,
Interface PCB with a binding band near the
main PCB, and pass the connectors of the
other side through the connection hole on the
main body.
*Pass the relay cable under the sheet metal so

that the cable does not hit the spring.

Junction Wiring A,

interface PCB

Binding band

Connection

hole

Junction Wiring B,

interface PCB

Figure 1-3-10

1-3-5

3B0

12. Connect the modular connector, Junction
Wiring, Printer Unit 10-pin connector, 6-pin
connector (on the front side of scanner interface
PCB assembly), Junction Wiring B, Interface
PCB, and Junction Wiring A, Interface PCB to
the Scanner Interface PCB Assembly described
in step 11.

13. Fit the Scanner Interface PCB Assembly to the
main body with four screws.
* When fitting, pass the cord‚ between the

assembly and the main body so that the cord
does not hit the connection portion of the
Scanner Interface PCB Assembly.

Modular

connector

Junction Wiring A,

Interface PCB

Junction Wiring B,

Interface PCB

10-pin
connector

Figure 1-3-11

6-pin
connector

Screws

14. Pass the cable to be passed through the
connection hole at the rear right of the main
body through the open bushing, OCB-1000,
and fit it to the connection hole.

Cord

Screws

Figure 1-3-12

Connection hole

Open bushing

OCE-1000

Figure 1-3-13

1-3-6

15. (120 V specifications)
Set the shield area of the Junction Wiring A,
Interface PCB with the clamp, GNK-5N and the
shield area of the Junction Wiring B, Interface
PCB with the clamp, EMT-3N, and fix them with
four binding screws M4 × 6.

Junction Wiring A,

interface PCB

Junction Wiring B,

interface PCB

Clamp,

EMT-3N

Clamp,

GNK-5N

3B0

Shield area

Junction Wiring A,

interface PCB

Junction Wiring B,

interface PCB

Shield area

(230 V specifications)
Bind the shield area of the Junction Wiring A,
interface PCB with the clamp, GNK-5N and at
the upper right and at the lower left, fix it with
two binding screws M4 × 6.
Bind the shield area of the Junction Wiring B,
interface PCB with the clamp, EMT-3N and at
the lower right and at the upper left, fix it with
two binding screws M4 × 6.

Junction Wiring B,

interface PCB

Junction Wiring A,

interface PCB

Figure 1-3-14

Clamp,

EMT-3N

Junction Wiring A,

interface PCB

Clamp,

GNK-5N

Junction Wiring B,

interface PCB

Figure 1-3-15

1-3-7

3B0

16. (For 120V Specifications)
Connect the Junction Wiring A, Interface PCB
with a binding band to CN5, and connect the
Junction Wiring B, Interface PCB with a binding
band to CN4.
* When connecting them, support the IPU PCB

with your hand.

(For 230V Specifications)
On the plotter IPU PCB, connect the connector
of the Junction Wiring B, Interface PCB with a
binding band to the JPEG connector, and
connect the connector of the Junction Wiring A,
Interface PCB with a binding band to the
scanner connector.
* When connecting them, support the IPU PCB

with your hand.

Junction Wiring A,

interface PCB

Junction Wiring B,

interface PCB

Junction Wiring A,

interface PCB

Junction Wiring B,

interface PCB

CN5

CN4

Figure 1-3-16

Scanner

connector

1-3-8

JPEG

connector

Figure 1-3-17

17. On the Junction Wiring, Printer Unit, connect
the connector at the lower part of the main PCB
located at the rear of the main body to the 10­pin connector and connect the connector to the
9-pin connector.
* If the connector has been already connected

on the main body, disconnect it and then
connect it to the Junction.

Connector

Connector

10-pin

connector

9-pin

connector

Connector

3B0

9-pin

connector

18. Reattach the main PCB cover with five screws.

Figure 1-3-18

Screws

Main PCB cover

Figure 1-3-19

1-3-9

3B0

19. Fit the controller cover with six screws, lock the
lower left six clamps on the right controller
cover from the rear side of the main body, and
connect the connector.

Controller

cover

Screws

Clamps

Connector

20. Reattach the rear cover, using M4 × 6 raised
binding screws and the eleven screws that you
removed or loosened at step 1.

Figure 1-3-20

Screws

Rear cover

M4 × 6 raised
binding screw

1-3-10

Screws

Figure 1-3-21

3B0

Connector

Connector

Ethernet cable

21. Reattach the main unit's left rear lower cover
with six screws.

22. Reattach the main unit's left rear upper cover by
tightening its two screws.

23. Close the attachment unit securely.

Left rear upper cover

Screw

Screw

Screw

Screws

Left rear

lower cover

Figure 1-3-22

24. Connect the ethernet cable, the connector and
the connector at the left rear of the main body
respectively.

25. Run the maintenance item U065, U066 and
U067 on operation panel of this product, and
then enter the value of data sheet with this
product.

Attachment unit

Figure 1-3-23

Figure 1-3-24

1-3-11

3B0

1-3-2 Copy mode initial settings

The factory settings for this machine are as shown below.

Maintenance

item No.

U256
U258
U267
U269
U271

U273

U344

User settings

Contents Setting at factory

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

Setting the maximum paper length

Setting the preheat (energy saving) mode

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

Custom media type
Standard size set
Auto roll over
Buzzer
Management #

ON
Single
Length by temp.
Paper feeding
Total count: 0.1
Key counter: 0.1
Paper length Ltd.: 6000
Returnable Len. L: 1400
Energy save

ON
Shut off mode

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

1-3-12

3B0

1-3-3 User Settings

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

(1) Default settings making procedure

Start

Press the */Language key.

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

Press the OK key.

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

. . . . .

Set the default setting mode.

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

Press the OK key.

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

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

Press the OK key.

Select item using the cursor
up/down keys.

Press the OK key.

Make the default setting.

Press the */Language key.

End

Press the OK key.

. . . . .

Exits the default setting mode.

1-3-13

3B0

(2) Making default settings

Machine default

Items common to user/manager

Paper width adjustment

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

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

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

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

Media Type [Paper working]

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

Media type setting [Paper material adjustment]

First turn “ON” Media Type.

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

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

Paper type: Plain, Vellum, Film, Custom

Items for managers only

Auto Clear Timer [Auto clear time]

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

Auto Shut-off Time [Auto shutoff time]

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

Timer Set

First turn “ON” Auto Clear Timer and set Auto
Shut-off Time to the setting other than “OFF”.

Auto Clear Time

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

2. Select a time and press the OK key.

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

Auto Preheat Time

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

2. Select a time and press the OK key.

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

Auto Shut-off Time

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

2. Select a time and press the OK key.

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

Copy size adjustment

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

Paper type: Plain, Vellum, Film, Custom

2. Change the size and press the OK key.

Setting range: –3.0 to +3.0%

Roll end adjustment

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

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

Display contrast

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

Setting range: 1 to 7

Orig. eject direct

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

Fusing temperature [Set fixing temp.]

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

Paper type: Plain, Vellum, Film, Custom

2. Select a temperature and press the OK key.

Plain: 145°C, 155°C, 165°C
Vellum: 165°C, 175°C, 185°C
Film: 150°C, 160°C, 170°C
Custom: Select a temperature based on settings in
Custom media type.

Custom media type [Custom. pap. material]

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

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

3. Adjust magnification and press the OK key.

Standard size set

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

Auto roll over

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

Buzzer

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

Management # [Manage. code]

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

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

1-3-14

Copy default

Items common to user/manager

3B0

Auto rotation mode [Auto rotation]

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

Zoom step [Zoom steps]

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

Zoom register

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

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

3. Set the magnification.

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

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

Cut size register

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

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

Setting range: 297 to 6000 mm (11 to 237")

Exposure step [Exposure steps]

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

Auto/Manual exp.

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

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

Default exposure

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

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

Setting range: 1 to 7

Exposure adj.

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

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

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

Setting range: 1 to 7

Items for manager only

Standard drawer

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

Auto select set

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

AMS mode

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

OK key.

Method copy start

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

press the OK key.

Start late time

First set Method copy start to “Auto start”.

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

Paper cut [Select cut. Method]

1. Select a cutting mode and press the OK key.
Setting range
When “A sizes” (metric) is set: Synchronized cut,
1189 mm, 841 mm, 594 mm, 420 mm, 297 mm,
User-1, User-2
When “B sizes” (metric) is set: Synchronized cut,
1030 mm, 728 mm, 515 mm, 364 mm, User-1,
User-2
When “Architecture” (inch) is set: Synchronized
cut, 12.0", 18.0", 24.0", 36.0", 48.0", User-1,
User-2
When “Engineer” (inch) is set: Synchronized cut,

11.0", 17.0", 22.0", 34.0", 44.0" , User-1, User-2

Sync. Cut length

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

OK key.

Delete memory

1. Select between “Delete” and “Confirm before

deleting” [“Check data of repeat copy”], and
press the OK key.

Per rep copy [Permit repeat]

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

1-3-15

3B0

Chg rep. copy # [Repeat codechange]

First set Per rep copy to “Code number”.

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

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

Memory compress

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

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

Maximum Jobs

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

Setting range: 5 Jobs, 10 Jobs, 20 jobs

Edit Function defaults [Default of edit. function]

Image Shift up/down

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

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

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

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

Image shift L/R

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

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

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

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

Leading edge

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

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

Setting range –200 to +200 mm (–8.0 to +8.0")

Trailing edge

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

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

Setting range –200 to +200 mm (–8.0 to +8.0")

Border erase

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

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

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

Adj. preview copy

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

Reduce length Ldt.

1. Enter the length of the original using the
numeric keys and press the OK key.

Setting range 2500 to 6000 mm (98.4 to 237.0")

1-3-16

1-4-1 Maintenance mode

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

(1) Executing a maintenance item

Start

3B0

Enter “10871087”.

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

Press the start key.

That maintenance item will be run.

Press the stop/clear key.

Yes

Run that item again?

- - - - - Entering the maintenance mode

- - - - - Selecting the maintenance item

No

Yes

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

Run another

maintenance item?

No

End

- - - - - Exiting the maintenance mode

1-4-1

3B0

(2) Maintenance mode item list

Section

General

Initialization

Drive, paper
feed, paper
conveying and
cooling
systems

Item

No.

U000 Printing out an own-status report ———

U001 Exiting the maintenance mode ———

U003 Setting the service telephone number ———

U004 Setting the machine model number ———

U005 Copying without paper ———

U019 Displaying the ROM version ———

U020 Initializing all data ———

U030 Checking the operation of the motors ———

U031 Checking switches for paper conveying ———

U032 Checking the operation of the clutches ———

U033 Checking the operation of the solenoids ———

U034 Adjusting the print start timing Roll: –5

U037 Checking the operation of the fan motors ———

U038 Checking safety switches ———

U039 Adjusting printing magnification

U040 Adjusting the synchronized cut length 0

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

Content of maintenance item Initial setting*

Bypass: 2

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

Vellum/SUB SCAN: 0

Film/MAIN SCAN: 0

Film/SUB SCAN: 0

Normal/1/M: 0

Normal/1/L: 0
Normal/2/S: 0

Normal/2/M: 0

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

Normal/3/M: 0

Normal/3/L: 0
Vellum/1/S: 0
Vellum/1/M: 0

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

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

Vellum/3/L: 0

* Initial setting when executing maintenance item U020.

1-4-2

3B0

Section

Drive, paper
feed, paper
conveying and
cooling
systems

Optical

High voltage

Developing

Fixing and
cleaning

Item

No.

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

U044 Adjusting the long copy cut length PLAIN PAPER: 0

U045 Checking paper size switches ———

U060 Adjusting the input gamma Copier: 0

U061 Checking the operation of the xenon lamps ———

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

U066 Adjusting the scanner leading edge registration 0

U067 Adjusting the optical axis (center line) 0

U073 Checking the operation of the original motor ———

U077 Checking the switches for original conveying ———

U079 Checking the shading operation ———

U090 Checking the AGC processing operation ———

U100 Setting the drum surface potential Grid data: 158

U101 Turning the transfer/separation charger on ———

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

U111 Checking/Clearing the drum drive time 0

U129 Turning potential correction on/off ON

U130 Initial setting for the developer ———

U131 Changing the initial setting for the developer Control: 120

U132 Forcing toner to be replenished ———

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

U139 Displaying thermistor temperatures ———

U140 Adjusting the developing bias ———

U155 Displaying the toner sensor output ———

U156 Changing the toner density control data Adjust: 0

U157 Checking/Clearing the developing section drive time 0

U158 Checking/Clearing the developing count 0

U160 Coating the cleaning blade with toner ———

U162 Forced stabilization ———

U163 Releasing the fixing section error state ———

U196 Checking the operation of the fixing heater ———

U199 Displaying the fixing unit thermistor temperatures ———

Content of maintenance item Initial setting*

Film/1/M: 0

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

Film/2/M: 0

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

Film/3/M: 0

Film/3/L: 0

VELLUM: 0

FILM: 0

Scanner: 0

Sub scan (%): 0

Target Level: 200

LPH: 7

* Initial setting when executing maintenance item U020.

1-4-3

3B0

Section

Operation
panel/Optional
units

Mode setting

Image
processing

Item

No.

U200 Turning all LEDs on ———

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

U213 Checking the operation of the counters ———

U214 Checking the upper roll unit ———

U245 Checking messages ———

U250 Setting the maintenance cycle 3000 m

U251 Checking/Clearing the maintenance count 0

U252 Setting the region of use JAPAN METRIC

U256 Turning the auto preheat function on/off ON

U258 Switching copy operation at toner empty detection Single

U262 Ignoring a call for service detection ———

U267 Adjusting the cutting length for the paper leading edge Length by temp.

U269 Selecting the timing for total counting Paper feeding

U271 Setting the unit of counting Total count: 0.1

U272 Turning the upper roll unit option on/off OFF

U273 Setting the maximum paper length Paper length Ltd.:

U344 Setting the preheat (energy saving) mode Energy save

U400 Adjusting the image width in the main scanning direction 0

U406 Adjusting the trailing edge margin Trailing edge: 0

U450 Selecting the PG mode ———

U451 PG gray printout ———

U452 PG 16-level grayscale printout ———

U454 Adjusting the exposure amount Normal original: 0

U455 Adjusting the automatic exposure Base: 3

U457 Adjusting the filter gain Normal original: 10

U459 Adjusting the output gamma 0

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

U462 Printing PG to check LPH operation

U470 Setting the data compression ratio 80

U475 Setting the stain compensation mode MODE1

U476 Setting the photo mode scanning width MODE1

Content of maintenance item Initial setting*

Key counter: 0.1

6000

Returnable Len. L:

1400

Character/Line: 0

Photo: 0

Character/Line: 10

Photo: 0

* Initial setting when executing maintenance item U020.

1-4-4

3B0

Other

Section

Item

No.

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

U903 Checking/Clearing the paper jam counts 0

U904 Checking/Clearing the call for service counts 0

U908 Checking/Clearing the total count 0

U916 Clearing all counts ———

U969 Adjusting CF service call count ———

U991 Checking/Clearing the scan count 0

U993 Printing out all PGs ———

U999 Checking the memory ———

Content of maintenance item Initial setting*

* Initial setting when executing maintenance item U020.

1-4-5

3B0

(3) Contents of maintenance mode items

Item No.

U000 Printing out an own-status report

Description

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

Purpose

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

Method

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

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

Display List to be printed out

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

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

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

Description and Procedure

Maintenance

JAM

Service Call

User default

Figure 1-4-1 Own-status report

1-4-6

Completion

Press the stop/clear key.

3B0

Item No.

U001 Exiting the maintenance mode

Description

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

Purpose

To exit the maintenance mode.

Method

Press the start key.

• The machine will enter the normal copy mode.

U003 Setting the service telephone number

Description

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

Purpose

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

Method

Press the start key.

• The currently set telephone number will be displayed.

Setting

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

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

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

Description and Procedure

Key Numbers/Symbols

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

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

U004 Setting the machine model number

Description

Displays and changes the machine model number.

Purpose

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

Method

Press the start key.

• The current machine model number will be displayed.

Setting

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

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

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

Completion

Press the stop/clear key.

1-4-7

3B0

Item No.

U005 Copying without paper

Description

Initiates copy operation without paper feed.

Purpose

To check the overall operation of the machine.

Method

1. Press the start key.

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

3. Remove all the paper from the paper source.

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

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

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

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

Completion

Press the stop/clear key.

U019 Displaying the ROM version

Description

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

Purpose

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

Method

1. Press the start key.

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

• The part number for the ROM will be displayed.

Description and Procedure

Display Description

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

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

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

Completion

Press the stop/clear key.

U020 Initializing all data

Description

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

Purpose

Use when replacing the engine main PCB.

Method

1. Press the start key.

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

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

3. Press the start key.

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

1-4-8

3B0

Item No.

U030 Checking the operation of the motors

Description

Drives each motor.

Purpose

To check the operation of each motor.

Method

1. Press the start key.

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

Display Operation

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

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

3. Press the start key.

• The selected motor is turned on.

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

Completion

Press the stop/clear key.

U031 Checking switches for paper conveying

Description

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

Purpose

To check the operation of the switches for paper conveying.

Method

1. Press the start key.

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

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

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

Description and Procedure

Display Switch name

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

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

* Optional

Completion

Press the stop/clear key.

1-4-9

3B0

Item No.

U032 Checking the operation of the clutches

Description

Turns each clutch on.

Purpose

To check the operation of each clutch.

Method

1. Press the start key.

2. Remove all the paper from the paper source.

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

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

• The display for the selected clutch will be highlighted.

5. Press the start key.

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

Display Clutch name

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

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

* Optional

Completion

Press the stop/clear key.

U033 Checking the operation of the solenoids

Description

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

Purpose

To check the operation of each solenoid.

Method

1. Press the start key.

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

• The display for the selected solenoid will be highlighted.

3. Press the start key.

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

Description and Procedure

1-4-10

Display Solenoid name

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

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

Completion

Press the stop/clear key.

3B0

Item No.

U034 Adjusting the print start timing

Method

See page 1-6-14.

U037 Checking the operation of the fan motors

Description

Drives each fan motor.

Purpose

To check the operation of each fan motor.

Method

1. Press the start key.

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

Display Operation

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

3. Press the start key.

• The selected fan motor will be turned on.

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

Completion

Press the stop/clear key.

U038 Checking safety switches

Description

Displays the on/off status of each safety switch.

Purpose

To check the operation of the safety switches.

Method

1. Press the start key.

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

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

Description and Procedure

Display Switch name Opening cover

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

Completion

Press the stop/clear key.

1-4-11

3B0

Item No.

U039 Adjusting printing magnification

Method

See page 1-6-13.

U040 Adjusting the synchronized cut length

Method

See page 1-6-16.

U041 Adjusting the standard cut length

Method

See page 1-6-15.

U044 Adjusting the long copy cut length

Method

See page 1-6-17.

U045 Checking paper size switches

Description

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

Purpose

To check the operation of the paper size switches.

Method

1. Press the start key.

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

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

Description and Procedure

Display Description

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

* Optional

Completion

Press the stop/clear key.

1-4-12

3B0

Item No.

U060 Adjusting the input gamma

Description

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

Purpose

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

Method

1. Press the start key.

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

Display Setting item Setting range

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

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

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

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

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

6. Set the original and make a test copy.

Completion

Press the stop/clear key.

U061 Checking the operation of the xenon lamps

Description

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

Purpose

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

Method

1. Press the start key.

2. Press the start key again.

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

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

Completion

Press the stop/clear key.

U065 Adjusting the scanning magnification

Method

See page 1-6-6.

Description and Procedure

U066 Adjusting the scanner leading edge registration

Method

See page 1-6-7.

U067 Adjusting the optical axis (center line)

Method

See page 1-6-8.

1-4-13

3B0

Item No.

U073 Checking the operation of the original motor

Description

Operates the original motor (OM).

Purpose

To check the operation of the original conveying system.

Method

1. Press the start key.

2. Press the start key again.

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

The original motor will be operated in reverse.

The original motor will be turned off.

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

Completion

Press the stop/clear key.

U077 Checking the switches for original conveying

Description

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

Purpose

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

Method

1. Press the start key.

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

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

Description and Procedure

Display Switch name

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

Completion

Press the stop/clear key.

1-4-14

3B0

Item No.

U079 Checking the shading operation

Description

Performs the shading operation and shows the CIS channel data.

Purpose

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

Note

Always install the original cover when running maintenance item U079.

Method

1. Press the start key.

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

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

Sample display

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

Description and Procedure

Checking Shading Correct. U079

BL/ch1 : 8

WH/ch1 : 103

BL/ch2 : 8

WH/ch2 : 105

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

Checking Shading Correct. U079

BL/ch3 : 7

WH/ch3 : 110

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

operation is judged to be normal.

Completion

Press the stop/clear key.

BL/ch4 : 12

WH/ch4 : 102

Figure 1-4-2

1-4-15

3B0

Item No.

U090 Checking the AGC processing operation

Description

Performs AGC processing and shows the CIS channel data.

Purpose

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

Method

1. Press the start key.

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

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

Sample display

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

Checking AGC Correct. U090

BL/ch1 : 32

WH/ch1 : 260

Description and Procedure

BL/ch2 : 32

WH/ch2 : 255

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

Checking AGC Correct. U090

BL/ch3 : 29

WH/ch3 : 257

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

Completion

Press the stop/clear key.

U100 Setting the drum surface potential

Method

See page 1-6-12.

BL/ch4 : 27

WH/ch4 : 253

Figure 1-4-3

1-4-16

3B0

Item No.

U101 Turning the transfer/separation charger on

Description

Performs transfer and separation charging.

Purpose

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

Method

1. Press the start key.

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

Display Operation

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

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

4. Press the start key.

• The selected charging operation will be performed.

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

Completion

Press the stop/clear key.

U105 Forcing the cleaning lamps to be turned on

Description

Turns the right, middle and left cleaning lamps on.

Purpose

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

Method

1. Press the start key.

2. Press the start key again.

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

turned on.

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

Completion

Press the stop/clear key.

U111 Checking/Clearing the drum drive time

Description

Displays and clears the drum drive time.

Purpose

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

Method

Press the start key.

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

Clearing the drive time

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

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

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

Completion

Press the stop/clear key.

Description and Procedure

1-4-17

3B0

Item No.

U129 Turning potential correction on/off

Description

Selects whether or not potential correction is to be performed.

Purpose

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

Method

Press the start key.

• The current setting will be displayed.

Setting

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

Display Setting

Surface Pot OFF No potential correction
Surface Pot ON Potential correction

• The factory default setting is “ON”.

2. Press the start key and check the setting.

Note

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

Completion

Press the stop/clear key.

U130 Initial setting for the developer

Description

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

Purpose

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

Method

1. Press the start key.

2. Press the start key again.

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

Description and Procedure

1-4-18

Display Description

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

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

Supplement

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

• Changing the toner sensor control voltage (U131)

• Clearing the toner density control data setting (U156)

• Clearing the developing section drive time (U157)

• Clearing the developing count (U158)

Completion

Press the stop/clear key.

3B0

Item No.

U131 Changing the initial setting for the developer

Description

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

Purpose

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

Method

Press the start key.

• The current toner sensor control voltage will be displayed.

Setting

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

Display Setting item Setting range

Control Toner sensor control voltage 0 to 255

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

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

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

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

Completion

Press the stop/clear key.

U132 Forcing toner to be replenished

Description

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

Purpose

Used when a toner empty state is frequently detected.

Method

1. Press the start key.

• The following data will be displayed.

Description and Procedure

Display Description

Toner sen. input Toner sensor output value
Toner sen. level Toner control level
Ton. Sen. cont. data Toner sensor control voltage

2. Press the start key.

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

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

Completion

Press the stop/clear key.

U135 Checking the operation of the toner feed motor

Description

Drives the toner feed motor.

Purpose

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

Note

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

Method

1. Press the start key.

2. Press the start key again.

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

the stop/clear key.

Completion

Press the stop/clear key.

1-4-19

3B0

Item No.

U139 Displaying the thermistor temperatures

Description

Displays the detected temperatures of the thermistors.

Purpose

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

Method

Press the start key.

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

Display Corresponding thermistor

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

Completion

Press the stop/clear key.

U140 Adjusting the developing bias

Description

Changes the preset value for the developing bias when the image is light or the background appears.

Purpose

The preset value need not be changed in the market.

Method

Press the start key.

• The current setting will be displayed.

Setting

1. Change the preset value using the cursor left/right keys.

• Change the value within the preset value 193 ± 20.

• A larger preset value darkens the image and a smaller preset value lightens the image.

• Measure the terminals of the developing bias with a tester and adjust the preset value so that 640 V

(reference value) is obtained.

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

Completion

Press the stop/clear key.

U155 Displaying the toner sensor output

Description

Displays the toner sensor output value and related data.

Purpose

To check the toner sensor output.

Method

1. Press the start key.

2. Press the start key again.

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

Description and Procedure

1-4-20

Display Description

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

temperature and developing count)

Temp. Current developing thermistor detection temperature (°C)

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

Completion

Press the stop/clear key.

3B0

Item No.

U156 Changing the toner density control data

Description

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

Purpose

Performed during replacement of the engine main PCB.

Method

Press the start key.

• The current toner density control data will be displayed.

Display Setting item Setting range

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

Setting for all data shift

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

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

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

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

Completion

Press the stop/clear key.

U157 Checking/Clearing the developing section drive time

Description

Displays and clears the developing section drive time.

Purpose

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

Method

Press the start key.

• The current developing section drive time will be displayed.

Clearing the drive time

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

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

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

Completion

Press the stop/clear key.

U158 Checking/Clearing the developing count

Description

Displays and clears the developing count.

Purpose

To check the developing count after replacing the developer.

Method

Press the start key.

• The current developing count will be displayed.

Clearing the time

1. Use the numeric keys to enter “0”.

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

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

Completion

Press the stop/clear key.

Description and Procedure

1-4-21

3B0

Item No.

U160 Coating the cleaning blade with toner

Description

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

Purpose

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

Method

1. Press the start key.

2. Remove the cleaning blade from the drum.

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

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

4. Press the start key.

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

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

6. Close the detachable unit.

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

Completion

Press the stop/clear key.

U162 Forced stabilization

Description

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

Purpose

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

Method

1. Press the start key.

2. Press the start key again.

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

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

Completion

Turn the main switch off and then back on again.

U163 Releasing the fixing section error state

Description

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

Purpose

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

Method

1. Press the start key.

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

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

Completion

Turn the main switch off and then back on again.

Description and Procedure

1-4-22

3B0

Item No.

U196 Checking the operation of the fixing heater

Description

Turns the main or sub fixing heaters on.

Purpose

To check the fixing heaters.

Method

1. Press the start key.

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

Display Description

HEAT1 Main fixing heater
HEAT2 Sub fixing heater

3. Press the start key.

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

Completion

Press the stop/clear key.

U199 Displaying the fixing unit thermistor temperatures

Description

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

Purpose

To check the fixing temperature when a fixing problem occurs.

Method

1. Press the start key.

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

Description and Procedure

Display Description Corresponding thermistor

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

Completion

Press the stop/clear key.

U200 Turning all LEDs on

Description

Turns all of the LEDs on the operation panel on.

Purpose

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

Method

Press the start key.

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

Completion

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

1-4-23

3B0

Item No.

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

Description

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

Purpose

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

Method

Press the start key.

Setting

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

Display Description

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

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

Completion

Press the stop/clear key.

U213 Checking the operation of the counters

Description

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

Purpose

To check the operation of the counters.

Method

1. Press the start key.

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

Description and Procedure

Display Type of counter

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

* Optional

3. Press the start key.

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

Completion

Press the stop/clear key.

1-4-24

3B0

Item No.

U214 Checking the upper roll unit

Description

Checks the operation of the optional upper roll unit.

Purpose

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

Method

1. Press the start key.

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

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

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

Completion

Press the stop/clear key.

U245 Checking messages

Description

Displays all messages that appear in the message display.

Purpose

To check displayed messages.

Method

1. Press the start key.

• A message will be displayed.

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

Completion

Press the stop/clear key.

U250 Setting the maintenance cycle

Description

Displays and changes the maintenance cycle.

Purpose

To check and change the maintenance cycle.

Method

Press the start key.

• The currently set maintenance cycle will be highlighted.

Setting

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

• Setting range: 0 – 999999 (m)

Setting example

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

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

Completion

Press the stop/clear key.

Description and Procedure

1-4-25

3B0

Item No.

U251 Checking/Clearing the maintenance count

Description

Displays and clears or changes the maintenance count.

Purpose

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

Method

Press the start key.

• The current maintenance count will be displayed.

Clearing the count

1. Use the numeric keys to enter “0”.

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

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

Changing the count

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

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

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

Completion

Press the stop/clear key.

U252 Setting the region of use

Description

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

Purpose

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

Method

Press the start key.

• The current setting will be highlighted.

Setting

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

Description and Procedure

Display Description

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

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

Completion

Press the stop/clear key.

1-4-26

3B0

Item No.

U256 Turning the auto preheat function on/off

Description

Turns the auto preheat function on or off.

Purpose

Set according to the preference of the user.

Method

Press the start key.

• The current setting will be highlighted.

Setting

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

Display Setting

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

• The factory default setting is “ON”.

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

be set to its default value (15 min).

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

Completion

Press the stop/clear key.

U258 Switching copy operation at toner empty detection

Description

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

Purpose

Set according to the preference of the user.

Method

Press the start key.

• The current setting will be highlighted.

Setting

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

Description and Procedure

Display Setting

Single Only single copies possible
Continue Enables continuous copying

• The factory default setting is “Single”.

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

Completion

Press the stop/clear key.

1-4-27

3B0

Item No.

U262 Ignoring a call for service detection

Description

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

Purpose

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

Method

Press the start key.

Setting

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

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

Cancel service call U262

C0210 : 0

C0220 : 0

C0310 : 0

Description and Procedure

C0800 : 0

ALL

Cancel service call U262

C6200 : 0

C6220 : 0

C7101 : 0

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

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

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

Display Setting

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

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

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

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

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

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

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

Completion

Press the stop/clear key.

C7200 : 0

ALL

Figure 1-4-4

1-4-28

3B0

Item No.

U267 Adjusting the cutting length for the paper leading edge

Description

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

Purpose

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

Method

Press the start key.

Setting

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

Display Setting

Length by temp. The cutting length for the leading edge of paper will be changed from 279 mm

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

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

leading edge of paper will be set to 279 mm.

• The factory default setting is “Length by temp.”.

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

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

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

Description and Procedure

Setting item Setting range Default setting Allowable setting increment

Temperature –5 to +5 0 (15°C) 1°C

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

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

Completion

Press the stop/clear key.

U269 Selecting the timing for total counting

Description

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

Purpose

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

Method

Press the start key.

• The current setting will be highlighted.

Setting

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

Display Setting

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

• The factory default setting is “Paper feeding”.

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

Completion

Press the stop/clear key.

1-4-29

3B0

Item No.

U271 Setting the unit of counting

Description

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

Purpose

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

Method

Press the start key.

• The current setting will be displayed.

Setting

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

Display Setting item Default setting

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

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

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

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

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

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

Completion

Press the stop/clear key.

U272 Turning the upper roll unit option on/off

Description

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

Purpose

Used when the optional upper roll unit is installed.

Method

Press the start key.

• The current setting will be displayed.

Setting

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

Description and Procedure

Display Setting

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

• The factory default setting is “OFF”.

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

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

Completion

Press the stop/clear key.

1-4-30

3B0

Item No.

U273 Setting the maximum paper length

Description

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

Purpose

Set according to the preference of the user.

Method

Press the start key.

• The current setting will be displayed.

Setting

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

Display Setting item Setting range Default setting

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

when making long copies

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

returning

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

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

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

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

Completion

Press the stop/clear key.

U344 Setting the preheat (energy saving) mode

Description

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

Purpose

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

Method

Press the start key.

• The current setting will be highlighted.

Setting

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

Description and Procedure

Display Setting

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

machine 210 seconds after releasing the preheat state.

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

machine 120 seconds after releasing the preheat state.

• The factory default setting is “Energy save”.

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

Completion

Press the stop/clear key.

1-4-31

3B0

Item No.

U400 Adjusting the image width in the main scanning direction

Method

See page 1-6-9.

U406 Adjusting the trailing edge margin

Method

See page 1-6-18.

U450 Selecting the PG mode

Description

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

Purpose

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

Method

1. Press the start key.

Display Setting item Setting range

Pattern Type of PG pattern 0 to 30
Exposure Printout density 0 to 63

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

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

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

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

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

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

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

Completion

Press the stop/clear key.

U451 PG gray printout

Description

Prints out a gray test pattern.

Purpose

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

Method

1. Press the start key.

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

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

Description and Procedure

1-4-32

Figure 1-4-5 PG gray printout

Completion

Press the stop/clear key.

3B0

Item No.

U452 PG 16-level grayscale printout

Description

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

Purpose

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

Method

1. Press the start key.

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

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

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

Completion

Press the stop/clear key.

U454 Adjusting the exposure amount

Method

See page 1-6-10.

Description and Procedure

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

U455 Adjusting the automatic exposure

Method

See page 1-6-11.

1-4-33

3B0

Item No.

U457 Adjusting the filter gain

Description

Sets the filter gain for each original mode.

Purpose

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

Method

Press the start key.

Setting

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

Display Type of original

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

the areas around the pasted sections will be reduced.

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

Setting item Setting range Default setting

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

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

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

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

Completion

Press the stop/clear key.

U459 Adjusting the output gamma

Description

Adjusts the density at which images will be printed.

Purpose

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

Method

Press the start key.

Setting

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

Description and Procedure

1-4-34

Setting item Setting range Default setting

Gamma value to be used when printing images –5 to +5 0

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

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

Completion

Press the stop/clear key.

3B0

Item No.

U461 Adjusting the focus and measuring the solid-black density

Description

Prints out a test pattern for adjusting the focus, as well as for measuring the density of a solid black image.

Purpose

Used to adjust the focus.

Method

1. Press the start key.

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

Display PG test pattern content

Adjust Focus Test pattern for adjusting the focus
Measure Black Densit Image for adjusting solid black

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

4. Press the start key again and the selected test pattern will be printed out.

Test pattern for adjusting the focus Image for adjusting solid black

Description and Procedure

Completion

Press the stop/clear key.

U462 Printing PG to check LPH operation

Description

Prints out a test pattern for checking LPH operation.

Purpose

Used when checking for problems with the LPH.

Method

1. Press the start key.

2. Use the cursor up/down keys to select the PG test pattern.

Display PG test pattern

Pattern 1 Continuous printing of PG for HDC
Pattern 2 Gray (half-tone) printing of PG for MIP

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

4. Press the start key. The test pattern will be printed out.

Completion

Press the stop/clear key.

Figure 1-4-7

1-4-35

3B0

Item No.

U470 Setting the data compression ratio

Description

Sets the data compression ratio when the user default setting for the memory data compression is set to
“Standard-compression”.

Purpose

Fundamentally, the data compression ratio is selected in the corresponding user default setting, so there is
normally no need to change this setting here.

Method

Press the start key.

• The current setting will be displayed.

Setting

1. Use the cursor left/right keys to select the desired compression ratio.

Setting item Setting range Default setting

Compression ratio 1 to 99 80

• Raising the setting will decrease the compression ratio while lowering it will increase the ratio.

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

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

Completion

Press the stop/clear key.

U475 Setting the stain compensation mode

Description

Sets the stain compensation mode.

Purpose

To select “Mode2” when stains or dust on the contact glass or the shading roller (middle upper original roller)
appear on the copy image.

Method

Press the start key.

Setting

1. Use the cursor up/down keys to select “Mode1” or “Mode2”.

Description and Procedure

Display Setting

Mode1 No stain compensation
Mode2 Stain compensation

• The factory default setting is “Mode1”.

2. If you selected “Mode2”, use the cursor left/right keys to change the setting.

Setting item Setting range Default setting

Low density –128 to +127 –100
reproducibility

• Raising the setting will increase the low density reproducibility of the image, and stains and dust will be

less visible in the copy image. Lowering it will decrease the low density reproducibility, making stains and
dust more visible in the copy image.

3. Press the start key to activate the setting.

Completion

Press the stop/clear key.

1-4-36

3B0

Item No.

U476 Setting the photo mode scanning width

Description

Sets the image scanning width when copying in the photo mode.

Purpose

To select “Mode2” if the image of the shading roller (middle upper original roller) fogs both edges of the copy
image in the photo mode.

Method

Press the start key.

Setting

1. Use the cursor up/down keys to select “Mode1” or “Mode2”.

Display Setting

Mode1 Scans at a width (original size switch) that is one size

larger than the detected size of the original.

Mode2 Scans at the width assigned to the detected size of the

original.

• The factory default setting is “Mode1”.

2. Press the start key to activate the setting.

Completion

Press the stop/clear key.

Description and Procedure

1-4-37

3B0

Item No.

Description and Procedure

U901 Checking/Clearing total copy counts by paper feed location

Description

Checks the total copy count of each paper feed location or resets all of the counts back to zero.

Purpose

Used to check the timing of the standard replacement of maintenance parts, or to clear all copy counts after
replacement of those parts.

Method

Press the start key.

• The copy count will be displayed for each paper feed location.

Sample display

Paper feeder counter U901

Bypass : 121212

1 drw : 232323

2 drw : 343434

3 drw : 343434

ALL

Figure 1-4-8

Display Paper source

Bypass Bypass
1 drw Upper roll unit*
2 drw Middle roll unit
3 drw Lower roll unit
ALL Clear counts for all locations

* Optional

Clearing the count

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

2. Press the start key.

• The copy counts for all paper feed locations will be returned to zero.

Completion

Press the stop/clear key.

1-4-38

3B0

Item No.

U903 Checking/Clearing the paper jam counts

Description

Checks the total number of paper jams that have occurred by location and type, or resets all of the counts back
to zero.

Purpose

Used to check the occurrence of paper jams, or to clear all counts after replacement of maintenance parts.

Method

1. Press the start key.

• The paper jam count will be displayed for each paper feed location.

2. Use the cursor left/right keys to switch between screens.

Sample display

Clear paper misfeed count U903

1st dr : 12

2nd dr : 17

3rd dr : 9

Description and Procedure

Bypass : 17

B-Resi : 15

ALL

Clear paper misfeed count U903

R-Resi : 14

Convey : 18

Eject : 9

Display Paper jam location or type Jam code

1st dr Upper roll unit*; No paper feed J-11
2nd dr Middle roll unit; No paper feed J-12
3rd dr Lower roll unit; No paper feed J-13
Bypass Bypass; No paper feed J-10
B-Resi Bypass registration J-30
R-Resi Roll unit registration J-31
Convey Paper conveying J-40
Eject Paper ejection J-50
Origin Originals J-70
ALL Clear all jam counts ———

* Optional

Clearing the count

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

2. Press the start key.

• The paper jam counts for all locations and types will be returned to zero.

Completion

Press the stop/clear key.

Origin : 20

ALL

Figure 1-4-9

1-4-39

3B0

Item No.

Description and Procedure

U904 Checking/Clearing the call for service counts

Description

Checks the total number of call for service detections, or resets the count back to zero.

Purpose

Used to check the occurrence of call for service detections, or to clear the count after replacement of
maintenance parts.

Method

Press the start key.

• The call for service detection count will be displayed for each code.

Clearing the count

• When you want to clear the count for only a specific call for service code

1. Use the cursor left/right keys to switch between screens.

Sample display

Clear service call count U904

C0110 : 4

C0210 : 0

C0220 : 2

C0310 : 0

ALL

Clear service call count U904

C6220 : 3

C6400 : 0

C7101 : 1

Figure 1-4-10

2. Use the cursor up/down keys to select the call for service code that you want to clear the count for.

3. Press the start key.

• The count for the selected call for service code will be returned to zero.

• When you want to clear the count for all call for service codes.

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

2. Press the start key.

• The count for all call for service codes will be returned to zero.

Completion

Press the stop/clear key.

C7200 : 0

ALL

1-4-40

3B0

Item No.

U908 Checking/Clearing the total count

Description

Displays and clears the total count value.

Purpose

Used to check the timing of the standard replacement of maintenance parts.

Method

Press the start key.

• The current total count will be displayed.

Clearing the count

1. Use the numeric keys to enter “0”.

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

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

Completion

Press the stop/clear key.

U916 Clearing all counts

Description

Clears all related counts.

Purpose

Used during a full maintenance operation.

Method

1. Press the start key.

2. Use the cursor up/down keys to select “Action”. If you want to cancel the operation to clear all counts,
select “Cancel”.

3. Press the start key.

• The values for the counts shown below will all be cleared and the screen for selecting a maintenance item

No. will be displayed again.

Description and Procedure

Maintenance Item No. Type of count

U251 Maintenance count
U901 Total count by paper source
U903 Paper jam count
U904 Call for service count
U908 Total count
U991 Scan count

U969 Adjusting CF service call count

Description

Returns the count of service call (C0220) to the previous value.

Purpose

If you use CompactFlash to upgrade only the scanner section, a communication error concerning the engine
section will occur and the count of service call (C0220) will increment. After upgrading is complete, therefore,
run this mode to return the count to the previous value.

Method

1. Press the start key.

• The current service call count will be displayed.

2. Press the cursor down key.

• The display will be highlighted.

3. Press the start key.

• The count will return to the previous value and the screen for selecting a maintenance item No. will be

displayed again.

Completion

Press the stop/clear key.

1-4-41

3B0

Item No.

U991 Checking/Clearing the scan count

Description

Displays and clears the scan count value.

Purpose

Used to check the timing of the standard replacement of maintenance parts.

Method

Press the start key.

• The current scan count will be displayed.

Clearing the count

1. Use the numeric keys to enter “0”.

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

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

Completion

Press the stop/clear key.

U993 Printing out all PGs

Description

Selects and prints out all PG patterns generated at the machine.

Purpose

Used when performing adjustments related to printing images in order to check the status of the ASIC on the
IPU PCB, using a PG pattern that is generated without the need to scan an original.

Method

1. Press the start key.

Description and Procedure

Display Setting item Setting range

1: HDC 2: MCP 3: MIP Type of ASIC 1 (Check LPH problems)

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

2. Use the cursor up/down keys to select “1: HDC 2: MCP 3: MIP”.

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

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

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

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

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

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

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

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

Completion

Press the stop/clear key.

U999 Checking the memory

Description

Checks the memory capacity of the DIMM chips on the IPU PCB.

Purpose

Used to check the memory capacity of the DIMM chips that are installed on the IPU PCB as well as to check if
they are functioning correctly.

Method

1. Press the start key.

2. Press the start key again.

• The DIMM chips will be checked and then the total memory capacity of those chips displayed. If “0” is
displayed, there are either no DIMM chips installed or they are not functioning correctly.

Completion

Press the stop/clear key.

2 (Check DIMM problems)
3 (Check IPU PCB problems)

1-4-42

3B0

1-5-1 Paper misfeed detection

(1) Paper misfeed indication

When a paper jam occurs, the copier immediately stops copying and the operation panel shows a paper misfeed message.
Paper jam counts sorted by the detecting conditions can be checked by maintenance item U903.
To remove paper, open the original cover.
To reset the paper misfeed detection, open and close the front covers, detachable unit, lower right cover, eject cover or
original cover to turn the safety switches 5 & 6, 1 & 2, 4, 3, or 7 & 8 off and on, respectively.

JAM code Description Messages

J-70 Paper jam in the original feed section

(2) Paper misfeed detection conditions

OTSW

Set original again

Remove original

OLSW

Figure 1-5-1 Paper misfeed detection

1-5-1

3B0

1. Paper jam in the original feed section: J-70

When the original trailing edge switch (OTSW) does not turn on within 3 s of the original motor (OM) turning on (primary
original feed).

Start of the primary original feed

OM

OLSW

OTSW

3 s

Off

On

Off

On

Off

On

Timing chart 1-5-1

When the original trailing edge switch (OTSW) is off at the original motor (OM) turning on (secondary original feed).

When the original trailing edge switch (OTSW) does not turn off within 3500 ms of the original leading edge switch (OLSW)
turning off.

Start of the secondary original feed

OM

OLSW

OTSW

3500 ms

Off

On

Off

On

Off

On

Timing chart 1-5-2

When the original trailing edge switch (OTSW) is on at the scan stop key being pressed.

When the original leading edge switch (OLSW) does not turn off if the original has been fed beyond the maximum length
allowed for long copies.

In the original return mode, the original trailing edge switch (OTSW) does not turn off if the time required to feed that original
elapses.

1-5-2

(3) Paper misfeeds

3B0

Problem

(J-70)
Paper jam in the
original feed section

Causes/check procedures

A piece of paper is caught around
the original trailing edge switch.

Defective original trailing edge
switch.

Original is extremely curled.

The original is longer than the
maximum length.

The surface of the front upper,
middle upper, rear upper, front
lower or rear lower original rollers
is dirty with the paper powder.

The front upper, middle upper, rear
upper, front lower or rear lower
original rollers are deformed or
worn.

The original cover is not closed
completely.

Electrical problem with the original
motor or original motor PCB.

Defective original leading edge
switch.

Corrective measures

Check and remove it, if any.

If CN7-1 on the scanner PCB remains the same when the
original trailing edge switch is turned on and off, replace
the original trailing edge switch.

Check and correct if necessary.

Use the original whose length meets specifications.

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

Check and replace rollers if necessary.

Close the original cover completely.

See page 1-5-11.

If CN7-2 on the scanner PCB remains the same when the
original leading edge switch is turned on and off, replace
the original leading edge switch.

1-5-3

3B0

1-5-2 Self-diagnostic function

(1) Self-diagnostic display

This unit is equipped with a self-diagnostic function. When it detects a problem with itself, it disables copying and displays
a 4-digit self-diagnostic code preceded by “C” indicating the nature of the problem together with a message requesting to
call for service on the display.
After removing the problem, the self-diagnostic function can be reset by opening and closing the detachable unit (SSW1
and 2 turning off and on) or turning the main switch off and back on.

Call service.

C0210

Figure 1-5-2 Service call code display

(2) Self diagnostic codes

Code Contents

C0210 MMI communication error

•Initial communication between IPU
PCB and engine main PCB was still
not complete after 50 seconds
elapsed.

•Retry was conducted 20 times after
data was sent but there was still no
response.

C0220 Engine communication error

•Initial communication between IPU
PCB and engine main PCB is still
not complete after a certain amount
of time elapsed.

C0310 HDC communication error

•Retry was conducted 50 times after
data was sent but there was still no
response.

C0620 Memory problem

•No DIMM is detected in the
memory slot.

Causes Check procedures/corrective measures

The engine main PCB
or IPU PCB is defective.

The engine main PCB
or IPU PCB is defective.

The engine main PCB
or IPU PCB is defective.

DIMM is not installed
correctly.

The IPU PCB is
defective.

Remarks

Replace the engine main PCB or the IPU
PCB and check for correct operation.

Replace the engine main PCB or the IPU
PCB and check for correct operation.

Replace the engine main PCB or the IPU
PCB and check for correct operation.

Reinstall the DIMM into CN7, CN8 and CN9
on the IPU PCB. (Be sure to install the
DIMM into CN7 first.)

Replace the IPU PCB and check for correct
operation.

C0800 Image processing error

•There has been no change in
image processing ASIC status.

C0850 Backup memory error

•Data can not be written normally in
backup memory.

1-5-4

The IPU PCB is
defective.

The IPU PCB is
defective.

Replace the IPU PCB and check for correct
operation.

Replace the IPU PCB and check for correct
operation.

1-5-3 Image formation problems

3B0

(1) No image

(entirely white).

See page 1-5-6.

(6) A black line

appears
longitudinally.

See page 1-5-8.

(2) Part or all of the

image is solid
black.

See page 1-5-6.

(7) One side of the

copy image is
darker than the
other.

See page 1-5-8.

(3) Image is too light.

See page 1-5-7.

(8) Image is blurred.

See page 1-5-8.

(4) Background is

visible.

See page 1-5-7.

(9) The leading edge

of the image is
consistently
misaligned with
the original.

See page 1-5-9.

(5) A white line

appears
longitudinally.

See page 1-5-7.

(10) The leading edge

of the image is
sporadically
misaligned with
the original.

See page 1-5-9.

(11) Image is out of

focus.

See page 1-5-9.

(12) The center of the

image is mis­aligned with the
original.

See page 1-5-10.

(13) One forth the A0

width of the
image is white.

See page 1-5-10.

(14) One forth the A0

width of the
image is black.

See page 1-5-10.

1-5-5

3B0

(1) No image (entirely white). Causes

1. LPH fails to turn on.

Causes

1. LPH fails to turn on.

Defective IPU PCB.

(2) Part or all of the image is solid

black.

Causes

1. Right or left xenon lamp fails to light.

Right or left inverter PCB is defective.

Defective scanner PCB.

Check procedures/corrective measures

Run maintenance item U451 and if no gray pattern is output, replace
the IPU PCB.

Causes

1. Right or left xenon lamp fails to light.

2. Loose IPU data wire connectors.

3. Defective IPU PCB.

Check procedures/corrective measures

Run maintenance item U061 and if the right or left xenon lamp does
not light while CN1-2 on the right or left inverter PCB goes low,
replace the PCB.

Run maintenance item U061 and check if CN8-5 or CN8-6 on the
scanner PCB goes low. If not, replace the PCB.

2. Loose IPU data wire connectors.

3. Defective IPU PCB.

1-5-6

Run maintenance item U461 by selecting “Measure Black Density”. If
an image for adjusting solid black is output, run maintenance item
U062. If the value of each channel is 255, check the connection of
the IPU data wire connectors and remedy if necessary.

Run maintenance item U461 by selecting “Measure Black Density”. If
an image for adjusting solid black is output, run maintenance item
U062. If the value of each channel is close to 0, replace the IPU PCB
(check that the xenon lamp is lit).

(3) Image is too light. Causes

1. Misadjusted xenon lamp intensity.

3B0

Causes

1. Misadjusted xenon lamp intensity.

(4) Background is visible.

Causes

1. Dirty lens array in the CIS.

2. Misadjusted xenon lamp intensity.

Check procedures/corrective measures

Run maintenance item U454 and adjust the exposure volume (see
page 1-6-10).

Causes

1. Dirty lens array in the CIS.

2. Misadjusted xenon lamp intensity.

Check procedures/corrective measures

Clean the lens array in the CIS.

Run maintenance item U454 and adjust the exposure volume (see
page 1-6-10).

(5) A white line appears

longitudinally.

Causes

1. Dirty contact glass.

2. Dirty middle upper original roller.

Causes

1. Dirty contact glass.

2. Dirty middle upper original roller.

Check procedures/corrective measures

Clean the contact glass.

Clean the middle upper original roller.

1-5-7

3B0

(6) A black line appears

longitudinally.

Causes

1. Dirty contact glass.

2. Dirty lens array in the CIS.

3. Dirty middle upper original roller.

4. Defective IPU PCB.

(7) One side of the copy image is

darker than the other.

Causes

1. Dirty contact glass.

2. Dirty lens array in the CIS.

3. Dirty middle upper original roller.

4. Defective IPU PCB.

Check procedures/corrective measures

Clean the contact glass.

Clean the lens array in the CIS.

Clean the middle upper original roller.

Run maintenance item U461 by selecting “Measure Black Density”. If
an image for adjusting solid black is output, run maintenance item
U062. If the value of each channel is close to 0, replace the IPU PCB
(check that the xenon lamp is lit).

Causes

1. Dirty lens array in the CIS.

2. Right or left xenon lamp is defective.

Causes

1. Dirty lens array in the CIS.

2. Right or left xenon lamp is defective.

(8) Image is blurred. Causes

1. Original is conveyed erratically.

Causes

1. Original is conveyed erratically.

Dirty or deformed front upper, middle upper,
rear upper, front lower or rear lower original
roller(s).

Original feed section drive system problem.

Check procedures/corrective measures

Clean the lens array in the CIS.

Run maintenance item U061 and check the right or left xenon lamp.
If any problem exists, replace the CIS (see page 1-6-3).

Check procedures/corrective measures

Clean or replace any of the front upper, middle upper, rear upper,
front lower and rear lower original rollers if necessary.

Check the gears and belts. Grease the gears or readjust the belt
tension if necessary.

Original cover installed incorrectly.

1-5-8

Reinstall.

3B0

(9) The leading edge of the image

is consistently misaligned with
the original.

Causes

1. Misadjusted leading edge registration.

(10) The leading edge of the image

is sporadically misaligned with
the original.

Causes

1. Misadjusted leading edge registration.

Check procedures/corrective measures

Run maintenance item U066 and readjust the leading edge
registration (see page 1-6-7).

Causes

1. Roll registration clutch or bypass registration clutch installed or operating
incorrectly.

Causes

1. Roll registration clutch or bypass
registration clutch installed or operating
incorrectly.

(11) Image is out of focus. Causes

1. Defective CIS.

Causes

1. Defective CIS.

Check procedures/corrective measures

Check the installation position and operation of each clutch; if it has
any operation problem, replace it.

Check procedures/corrective measures

If the image is still out of focus during normal copying after the
correct pattern has been obtained by maintenance item U461 by
selecting “Adjust Focus”, replace the CIS.

1-5-9

3B0

(12) The center of the image is

misaligned with the original.

Causes

1. Original is not placed correctly.

(13) One forth the A0 width of the

image is white.

Causes

1. Original is not placed correctly.

Check procedures/corrective measures

Correct.

Causes

1. Defective CIS or ISU PCB.

Causes

1. Defective CIS or ISU PCB.

Example

If there is a problem with CN3 (CN1) but CN4 (CN2) to CN6 (CN4) are normal, check by swapping the connections of
CN1 – CN3 and CN2 – CN4 of the CIS and ISU PCB.

When connection between CN2 of the CIS with
CN3 of the ISU PCB are normal.

When connection between CN1 of the CIS with
CN4 of the ISU PCB are normal.

(14) One forth the A0 width of the

image is black.

Causes

See “(13) One forth the A0 width of the image is white” for check procedures and
corrective measures.

Change the connections of the CIS and ISU PCB as shown in the
following example to locate the problem.

Connect CN1 of the CIS to CN4 of the ISU PCB. If there is a problem,
the CIS is defective. Replace the CIS.

Connect CN2 of the CIS to CN3 of the ISU PCB. If there is a problem,
the ISU PCB is defective. Replace the ISU PCB.

1. Defective CIS or ISU PCB.

Check procedures/corrective measures

1-5-10

1-5-4 Electrical problems

3B0

Problem

(1)
The original feed
motor does not
operate.

(2)
The right or left
xenon lamp does not
light.

(3)
The right or left
xenon lamp does not
go off.

(4)
The scan stop key
does not operate.

Causes

The original feed motor coil is
broken.

The original motor PCB is
defective.

The scanner PCB is defective.

The right or left inverter PCB is
defective.

The scanner PCB is defective.

The CIS is defective.

The right or left inverter PCB is
defective.

The scanner PCB is defective.

The operation unit PCB is
defective.

Check procedures/corrective measures

Check for continuity across the coil. If none, replace the
original feed motor.

Run maintenance item U073. If the CN1-4 on the original
motor PCB goes low but the original motor does not
rotate, replace the PCB.

Run maintenance item U073. If CN8-1 on the scanner
PCB does not go low, replace the PCB.

Run maintenance item U061. If CN1-2 on the right or left
inverter PCB goes low but the right or left xenon lamp
does not light, replace the PCB.

Run maintenance item U061. If CN8-5 or CN8-6 on the
scanner PCB does not go low, replace the PCB.

Run maintenance item U061. If CN8-5 or CN8-6 on the
scanner PCB goes low but the right or left xenon lamp
does not light, replace the CIS.

Check if the right or left xenon lamp goes off when CN1-2
on the right or left inverter PCB is high. If not, replace the
PCB.

Check if CN8-5 or CN8-6 on the scanner PCB remains
low constantly. If so, replace the PCB.

If CN2-3 on the operation unit PCB does not go low when
the scan stop key is pressed, replace the PCB.

1-5-11

3B0

1-5-5 Mechanical problems

Problem Causes/check procedures Corrective measures

(1)
No original conveying.

Check if the surfaces of the front upper,
middle upper, rear upper, front lower and rear
lower original rollers is dirty with paper
powder.

If they are, clean with isopropyl alcohol.

(2)
Original jam.

Check if the front upper and rear upper
original rollers are deformed or worn.

Check if the original leading edge switch
operates correctly.

Check if the actuator of the original leading
edge switch is broken.

Check if the original trailing edge switch
operates correctly.

Check if the actuator of the original trailing
edge switch is broken.

Check if original feed section drive belts 1
and 2 are installed correctly.

Check if the original cover is installed
correctly.

Check if a guide plate or other component
along the original conveying path is
deformed.

If it is, replace.

If CN7-1 on the scanner PCB does not
change levels when the original leading
edge switch is turned on and off, replace
the switch.

If it is, replace the switch.

If CN7-2 on the scanner PCB does not
change levels when the original trailing
edge detection switch is turned on and off,
replace the switch.

If it is, replace the switch.

If not, reinstall.

If not, reinstall.

If it is, correct or replace.

1-5-12

3B0

1-6-1 Cautions during disassembly and assembly

(1) Caution

• When carrying out disassembly, be sure to turn the main switch off and pull out the power cord before starting.

• When handling PCBs avoid touching PCB connectors with the bare hands or scratching equipment.

• When ICs are used on PCBs, do not touch the board with the bare hands or with objects charged with static electricity.

• Use one of the testers shown below when measuring voltage:

• HIOKI 3200

• SANWA MD-180C

• SANWA YX-360TR

• BECKMAN TECH300

• BECKMAN 3030: Possible to measure RMS values

• BECKMAN 330: Possible to measure RMS values

• BECKMAN DM45

• BECKMAN DM850: Possible to measure RMS values

• FLUKE 8060A: Possible to measure RMS values

• ARLEC DMM1050

• ARLEC YF1030C

• Originals used.

1. NTC (new test chart)

1-6-1

3B0

(2) Executing a maintenance item

Enter “10871087”.

Start

. . . . .

Entering the maintenance mode

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

Press the start key.

That maintenance item will be run.

Press the stop/clear key.

Yes

Yes

Run that item again?

No

Run another

maintenance item?

. . . . .

Selecting the maintenance item

1-6-2

No

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

End

. . . . .

Exiting the maintenance mode

1-6-2 Original feed and optical section

(1) Attachment and removal of the contact image sensor

Follow the procedure below when replacing the contact image sensor.

Procedure

1. Remove the six screws holding the rear
cover and then detach it.

3B0

Screw

Screw

2. Remove the ten screws holding the rear
inner cover and then detach it.

Rear cover

Screw

Screws

Figure 1-6-1

Screws

Screws

Screw

Rear inner cover

Figure 1-6-2

Screw

Screws

1-6-3

3B0

3. Remove the four connectors from the ISU
PCB.

4. Remove the wires from the wire saddle.

5. Remove the connector from the left inverter
PCB.

6. Remove the wires from the clamp.

ISU PCB

Connectors

Wire saddle

Hole

Connector

Clamp

Left inverter PCB

Figure 1-6-3

7. Remove the connector from the right inverter
PCB.

8. Remove the wires from the clamp.

Clamp

Hole

Connector

Right inverter PCB

Figure 1-6-4

1-6-4

9. Remove the four screws holding the contact
image sensor.

10. Push up the contact image sensor from the
both holes (see Figures 1-6-3 and 1-6-4).

11. Detach the contact image sensor from the
main unit.

Screws

3B0

Screws

Contact image sensor

12. After replacing the contact image sensor, refit
all the removed parts.
* Refit the four connectors of the contact image

sensors to the ISU PCB so that numbers
CN1 to CN4 indicated on the connectors
match connector numbers CN1 to CN4 on
the ISU PCB (see Figure 1-6-3).

Figure 1-6-5

1-6-5

3B0

(2) Adjusting scanning magnification

Follow the procedure below when there is a magnification error between the original and the copy image.

Caution:

Before making the following adjustment, ensure that the below adjustment has been made in the maintenance mode.

Procedure

U039

(P.1-6-13)

Start

Enter the maintenance mode.

Enter “065” using the numeric keys.

Press the start key to display
the initial screen.

Select the direction that you wish to
adjust using the cursor up/down keys.

• Main scan

• Sub scan

Press the interrupt key to enter
the test copy mode.

Place an original and make a test
copy.

U065

Main scanning

direction

Sub
scanning
direction

Figure 1-6-6

Press the start key to store
the setting.

Is magnification in

the main/sub scanning

direction correct?

Yes

Press the stop/clear key.

Exit the maintenance mode.

End

Change the setting value using

No

the cursor left/right keys.

• The greater the value, the longer
the image.

• The smaller the value, the shorter
the image.

Setting range:

Main scan: –10.0 to +10.0

Sub scan: –10.0 to +10.0
Initial settings:
Main scan: 0

Sub scan: 0
Changing the value by 1 changes the magnification by

0.1% in the main scanning direction (1.0 mm for a
1000 mm original) and 0.5 mm in the sub scanning direction.

1-6-6

3B0

(3) Adjusting the scanner leading edge registration

Follow the procedure below when there is a regular error between the leading edges of the original and the copy image.

Caution:

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

Procedure

U039

(P.1-6-13)

Start

Enter the maintenance mode.

Enter “066” using the numeric keys.

Press the start key to display
the initial screen.

Press the interrupt key to enter
the test copy mode.

Place an original* and make a test
copy.

U034

(P.1-6-14)

U065

(P.1-6-6)

10 mm

Reference

line

Original Sample 1 Sample 2

U066

A

Figure 1-6-7

Press the start key to store
the setting.

* Use an original with a reference line

10 mm from the leading edge.

A

Is the length
A between the reference
line and the leading edge

shorter than 10 mm?

(Sample 1)

No

Is the length
A between the reference
line and the leading edge

longer than 10 mm?

(Sample 2)

No

Press the stop/clear key.

Exit the maintenance mode.

End

Increase the setting value using the

Yes

cursor right key.

• The greater the value, the later
the scanning starts.

Decrease the setting value using the

Yes

cursor left key.

• The smaller the value, the earlier
the scanning starts.

Setting range: –15 to +15
Initial setting: 0
Changing the value by 1 moves the leading
edge by 1.0 mm.

1-6-7

3B0

(4) Adjusting the optical axis (center line)

Follow the procedure below when there is a regular error between the center lines of the original and the copy image.

Caution:

Before making the following adjustment, ensure that the below adjustment has been made in the maintenance mode.

Procedure

U039

(P.1-6-13)

Start

Enter the maintenance mode.

Enter “067” using the numeric keys.

Press the start key to display
the initial screen.

Press the interrupt key to enter
the test copy mode.

Place an original and make a test
copy.

Copy image

appears too far to right?

(Sample 1)

U067

Press the start key to store
the setting.

Setting range: –5.0 to +5.0
Initial setting: 0
Changing the value by 1 moves
the center line by 0.1 mm.

Increase the setting value using the

Yes

cursor right key.

• The greater the value, the earlier
the printing starts.

No

Copy image

appears too far to left?

(Sample 2)

No

Press the stop/clear key.

Exit the maintenance mode.

End

Sample 1 Sample 2

Decrease the setting value using the

Yes

cursor left key.

• The smaller the value, the later
the printing starts.

Original

Figure 1-6-8

1-6-8

3B0

(5) Adjusting the image width in the main scanning direction

Follow the procedure below in order to widen the maximum LPH printing width when the edges in the main scanning
direction of the copy image are missing.

Caution:

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

Procedure

U039

(P.1-6-13)

Start

Enter the maintenance mode.

Enter “400” using the numeric keys.

Press the start key to display the
initial screen.

Press the interrupt key to enter the
test copy mode.

Press the start key to output a test
pattern*.

Are the edges
in the main scanning
direction of the copy

image missing?

(Sample)

Press the stop/clear key.

Exit the maintenance mode.

U065

(P.1-6-6)

No

U067

(P.1-6-8)

Press the start key to store the
setting.

* Use paper with the width of A1/36".

Change the setting value using the

Yes

cursor left/right keys.

• The greater the value, the wider
the image.

• The smaller the value, the narrower
the image.

Setting range: –20 to +20
Initial setting: 0
Changing the value by 1 moves the
edges by 1.0 mm.

U400

End

Image width in the main

scanning direction

Test pattern Sample

Image width in the main

scanning direction

Figure 1-6-9

1-6-9

3B0

(6) Adjusting the exposure amount

Follow the procedure below to adjust the LPH output density when the test copy density is not correct after cleaning or
replacing the CIS or contact glass. Also, perform the adjustment if the correct copy density cannot be obtained when the
copy mode is selected correctly for the original.

Procedure

Gamma curve

32

Darker

Start

Enter the maintenance mode.

Enter “454” using the numeric keys.

Press the start key to display the
initial screen.

Select a type of original that you
wish to adjust using the cursor
up/down keys.

• Normal original

• Character/line

• Photo

Press the interrupt key to enter the
test copy mode.

Place an original and make a test
copy.

Is the copy density correct?

Yes

Press the stop/clear key twice.

Exit the maintenance mode.

End

Output: LPH output density

0 255

Input: CIS scanning density

Changing the setting value (input) moves
the gamma curve along the Y axis.

Figure 1-6-10

Press the start key to store the
setting.

Change the setting value using the

No

left/right cursor keys.

• The greater the value, the darker
the image.

Setting range

Normal original: –6 to +6
Character/line: –4 to +4
Photo: –4 to +4

Initial settings

Normal original: 0
Character/line: 0
Photo: 0

Lighter

1-6-10

3B0

(7) Adjusting the automatic exposure

Follow the procedure below when the test copy density in the automatic exposure mode is not correct after cleaning or
replacing the CIS or contact glass.

Procedure

Start

Enter the maintenance mode.

Enter “455” using the numeric keys.

Press the start key to display the
initial screen.

Press the interrupt key to enter the
test copy mode.

Place an original and make a test
copy.

Is the copy density correct?

Yes

Press the stop/clear key twice.

Exit the maintenance mode.

End

Press the start key to store the
setting.

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

No

• The greater the value, the lighter
the image.

• The smaller the value, the darker
the image.

Setting range: 0 to 6
Initial settings: 3

1-6-11

3B0

1-6-3 Image formation section

(1) Checking the drum surface potential

Follow the procedure below when replacing the drum, drum surface potential sensor and LED printhead.

Procedure

Start

Enter the maintenance mode.

Enter “452” using the numeric keys.

Output a test pattern.

Is the image correct?

(Sample 1)

No

Press the stop/clear key.

Enter “100” using the numeric keys.

Press the start key to display
the initial screen.

Approx. 1 cm

3

Sample 1

Sample 1: images can be seen from around 3rd level.
Sample 2: images can be seen from around 2nd level.
Sample 3: images can be seen from around 4th level.

Sample 2

2

Sample 3

Figure 1-6-11

Yes

Press the stop/clear key.

Exit the maintenance mode.

End

4

Select one of the below items
using the cursor up/down keys and
then press the start key.

• After replacing the LED print­head, select “Exposure Level”.

Select “Input” using the cursor
up/down keys and then press
the start key.

Change the setting value using
the left/right cursor key.

• For sample 2, decrease the
value by 2 or 3.

• For sample 3, increase the
value by 2 or 3.

Press the start key to store the
setting.

Press the stop/clear key three
times.

Select one of the below items
using the cursor up/down keys and
then press the start key.

• After replacing the drum or
drum surface potential sensor,
select “Surface Potential”.

Select “Input” using the cursor
up/down keys and then press
the start key.

Change the setting value using
the left/right cursor key.

• For sample 2, decrease the
value by 9 or 10.

• For sample 3, increase the
value by 9 or 10.

1-6-12

1-6-4 Paper feed section

(1) Adjusting printing magnification

Follow the procedure below when the printing magnification is not correct.

Caution:

Use paper with the width of 841 mm or more.

Procedure

Start

3B0

Enter the maintenance mode.

Enter “039” using the numeric keys.

Press the start key to display
the initial screen.

Select a paper type that you wish
to adjust using the cursor up/down
keys and then press the start key.
* Prepare in advance the paper

of the type that you wish to adjust.

• Plain paper

• Vellum

• Film

Select the direction that you wish
to adjust using the cursor up/down
keys.

• MAIN SCAN

• SUB SCAN

Press the interrupt key to enter
the test copy mode.

Main scanning direction
Reference: 762±1 mm (12 grids)

Sub
scanning direction
Reference:
762±1 mm
(12 grids)

Test pattern

Figure 1-6-12

Press the start key to output the
test pattern.

Do image lengths

in the main/sub

scanning directions comply

with the reference?

Yes

Press the stop/clear key twice.

Exit the maintenance mode.

End

Press the start key to store the
setting.

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

No

• The greater the value, the
longer the image.

• The smaller the value, the
shorter the image.

Setting range: –3.0 to +3.0
Initial settings: 0
Changing the value by 1 changes
the magnification by 0.1%.

1-6-13

3B0

(2) Adjusting the print start timing

Follow the procedure below when there is a regular error between the leading edges of the copy image and original .

Caution:

Before making the following adjustment, ensure that the below adjustment has been made in the maintenance mode.

Procedure

U039

(P.1-6-13)

Start

Enter the maintenance mode.

Enter “034” using the numeric keys.

Press the start key to display
the initial screen.

Select the paper source that you
wish to adjust using the cursor
up/down keys.

• Roll (mm)

• Bypass (mm)

Press the interrupt key to enter
the test copy mode.

U034

A = 5±1 mm

Test pattern

Figure 1-6-13

Press the start key to output
a test pattern.

Is the leading

edge margin A 5±1 mm?

Yes

Press the stop/clear key.

Exit the maintenance mode.

End

Press the start key to store the
setting.

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

• The greater the value, the

No

wider the leading edge margin.

• The smaller the value, the
narrower the leading edge
margin.

Setting range: –30 to +30
Initial setting Roll: –5
Bypass: 2
Changing the value by 1 moves
the leading edge by 1.0 mm.

1-6-14

3B0

(3) Adjusting the standard cut length

Follow the procedure below if the paper is not cut correctly in standard cut copying.
Also, perform this adjustment when the paper is set to cut at different lengths according to the paper type (standard paper,
vellum or film).

Caution:

Always make this adjustment for lengths S, M and L.
Before making the following adjustment, ensure that the below adjustments have been made in the maintenance mode.

Procedure

U039

(P.1-6-13)

Enter the maintenance mode.

Enter “041” using the numeric keys.

Press the start key to display
the initial screen.

Select the paper type and paper source that you
wish to adjust using the cursor up/down keys and
then press the start key.

• Pla./2nd cas. • Vel./2nd cas. • Film/2nd cas.

• Pla./3rd cas. • Vel./3rd cas. • Film/3rd cas.

• Pla./1st cas. • Vel./1st cas. • Film/1st cas.

Select a length that you wish to
adjust using the cursor up/down
keys.

• S (297 mm)

• M (802 mm)

• L (1200 mm)

U034

(P.1-6-14)

Start

U041

A

Paper cut length: A

A: reference
S: 297±1 mm
M: 802±1 mm
L: 1200±1 mm

Figure 1-6-14

Press the interrupt key to enter
the test copy mode.

Press the start key to output
a test pattern.

Is paper cut within

the reference length A?

No

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

• The greater the value, the longer
the cut length.

• The smaller the value, the shorter
the cut length.

Press the start key to store the setting.

Yes

Yes

Setting range: –30 to +30
Initial setting: 0
Changing the value by 1 changes the length by 1.0 mm.

Make adjustment

for other length?

No

Press the stop/clear key twice.

Exit the maintenance mode.

End

1-6-15