Mita PointSource Ai 3010 Bedienungsanleitung

3010 S/M (MCA)

SERVICE

MANUAL

Published in Apr. ’00

2AR70765

Revision 5

PointSource Ai 3010

Service

Manual

PointSource

Ai 3010

CAUTION

DANGEROFEXPLOSIONIFBATTERYISINCORRECTLYRE-

PLACED.REPLACEONLYWITHTHESAMEOREQUIVALENT

TYPE RECOMMENDED BY THE MANUFACTURER. DISPOSE

OF USED BATTERIES ACCORDING TO THE MANUFAC-

TURER’S INSTRUCTIONS.

ATTENTION

IL Y A DANGER D’EXPLOSION S’IL Y A REMPLACEMENT IN-

CORRECT DE LA BATTERIE. REMPLACER UNIQUEMENT

AVEC UNE BATTERIE DU MÊME TYPE OU D’UN TYPE REC-

OMMANDÉ PAR LE CONSTRUCTEUR. METTRE AU RÉBUT

LES BATTERIES USAGÉES CONFORMÉMENT AUX INSTRUC-

TIONS DU FABRICANT.

Safetyprecautions

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

Varioussymbolsareusedtoprotectourservicepersonneland

customersfromphysicaldangerandtopreventdamagetotheir

property.Thesesymbolsaredescribedbelow:

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

2AR

CONTENTS

I THEORY AND CONSTRUCTION SECTION

1-1 Specifications

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

1-2 Handling Precautions

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

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

1-3 Mechanical Construction

1-3-1 Part names and their functions.................................................... 1-3-1

1-3-2 Machine cross section ................................................................. 1-3-3

1-3-3 Drive system................................................................................ 1-3-4

1-3-4 Mechanical construction .............................................................. 1-3-6

II ELECTRICAL SECTION

2-1 Electrical Parts Layout

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

2-2 Detection of Paper Misfeed

2-2-1 Paper misfeed detection.............................................................. 2-2-1

2-2-2 Paper misfeed detection conditions ............................................ 2-2-2

2-3 Operation of the PCBs

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

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

2-3-3 Scanner control PCB ................................................................... 2-3-5

2-3-4 Engine PCB ................................................................................. 2-3-6

2-3-5 Scanner motor PCB .................................................................... 2-3-7

2-3-6 Operation unit main PCB, operation unit right PCB

and operation unit left PCB ......................................................... 2-3-8

2-3-7 CCD PCB .................................................................................. 2-3-10

2-3-8 Laser diode PCB and beam detection PCB .............................. 2-3-11

III SET UP AND ADJUSTMENT SECTION

3-1 Installation

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

3-1-2 Setting initial copy modes.......................................................... 3-1-16

3-1-3 Installing the add-on memory SIMM (option) ............................ 3-1-17

3-1-4 Installing the drawer heater (service part) ................................. 3-1-19

3-1-5 Installing the key counter (option) ............................................. 3-1-21

3-1-6 Installing the MMD host monitoring system device (option) ...... 3-1-24

3-1-7 Installing the DF (option) ........................................................... 3-1-26

3-2 Maintenance Mode

3-2-1 Maintenance mode ...................................................................... 3-2-1

3-2-2 Copier management .................................................................. 3-2-86

3-3 Assembly and Disassembly

3-3-1 Precautions for assembly and disassembly .................................. 3-3-1

3-3-2 Paper feed section .........................................................................3-3-3

3-3-3 Optical section..............................................................................3-3-24

3-3-4 Main charging section ..................................................................3-3-43

3-3-5 Drum section ................................................................................3-3-47

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