Konica Minolta PI-110 User Manual

SERVICE MANUAL

Model

PI-110

JANUARY 2004

CSM-PI110

KONICA MINOLTA BUSINESS SOLUTIONS U.S.A., INC.

PI-110

SERVICE MANUAL

JANUARY 2004

Used on Konica Models

FORCE 65/7155/7165/7255/7272

IMPORTANT NOTICE

Because of the possible hazards to an inexperienced
person servicing this equipment, as well as the risk of
damage to the equipment, Konica Minolta Business
Solutions U.S.A., Inc. strongly recommends that all
servicing be performed by Konica-trained service tech­nicians only.

Changes may have been made to this equipment to
improve its performance after this service manual was
printed. Accordingly, Konica Minolta Business Solu­tions U.S.A., Inc., makes no representations or war­ranties, either expressed or implied, that the informa­tion contained in this service manual is complete or
accurate. It is understood that the user of this manual
must assume all risks or personal injury and/or dam­age to the equipment while servicing the equipment for
which this service manual is intended.

Corporate Publishing Department

© 2004, KONICA MINOLTA BUSINESS SOLUTIONS U.S.A., INC.

All rights reserved.

Printed in U.S.A.

CONTENTS

CONTENTS

SAFETY AND IMPORTANT WARNING ITEMS

Refer to the 7155/7165/7255/7272 Service Manual

1. OUTLINE

PI-110 PRODUCT SPECIFICATIONS ......................1-1

CENTER CROSS SECTION .....................................1-2

DRIVE SYSTEM DIAGRAM ......................................1-3

FEEDING PROCESS ................................................1-4

[1] Automatic Sheet Feeding

(online operation) ......................................1-4

[2] Manual Sheet Feeding (offline operation) ..1-4

2. UNIT EXPLANATION

EXTERNAL SECTION ...............................................2-1

[1] Composition ...............................................2-1

[2] Mechanisms ...............................................2-1

[3] Interlock control ..........................................2-1

PAPER FEED UNIT...................................................2-2

[1] Composition ...............................................2-2

[2] Mechanisms ...............................................2-2

[3] Feed Control...............................................2-3

3. DISASSEMBLY/ASSEMBLY

EXTERNAL SECTION ...............................................3-1

[1] Detaching / Re-installing

the External covers.....................................3-1

PAPER FEED UNIT...................................................3-2

[1] Replacing the Paper feed roller and

Feed roller ..................................................3-2

[2] Replacing the Double feed prevention roller

and Torque limiter ......................................3-3

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SAFETY WARNINGS

[1] Modifications Not Authorized by

Konica Minolta

Konica Minolta equipment is renowned for their high
reliability. This reliability is achieved through high-quality
design and a solid service network.

Unauthorized modifications involve a high risk of degrad­ing performance and safety. Such modifications are there­fore strictly prohibited. The points listed below are not
exhaustive, but they illustrate the reasoning behind this
policy.

PROHIBITED ACTIONS :

(1) Using extension cables or a different power cord

than specified by Konica Minolta.

(2) Using other fuses than specified by Konica

Minolta. Safety will not be assured, leading to a
risk of fire and injury.

(3) Disabling fuses or bridging fuse terminals with

wire, metal clips, solder or similar. (This applies

also to thermal fuses.)
(4) Removing air filters (except for replacement).
(5) Disabling relay functions (such as wedging pa-

per between relay contacts, etc.).
(6) Disabling safety functions (interlocks, safety cir-

cuits, etc.). Safety will not be assured, leading to

a risk of fire and injury.
(7) Performing actions to equipment not described

in the instruction manual or the service hand-

book.
(8) Using parts other than specified by Konica

Minolta.

[2] Checkpoints When Performing On-

site Service

Konica Minolta equipment is extensively tested before
shipping, to ensure that all applicable safety standards
are met, in order to protect the customer and customer
engineer from the risk of injury. However, in daily use, any
electrical equipment may be subject to parts wear and
eventual failure. In order to maintain safety and reliability,
the customer engineer must perform regular safety checks.

(3) Be sure to disconnect the power cord of the

equipment from the AC outlet.
Simply turning off the power switch is not suffi­cient, because paper feed units or other electri­cal equipment may be powered also when the
power switch is turned off.

(4) Proceed with special care when performing op-

eration checks or adjustment while the unit is
powered. When carrying out operation checks or
adjustment while external covers are removed,
the risk of electrical shock exists when touching
parts which carry high voltage or electrical charge.
The risk of injury exists when touching moving
parts such as gears or chains.

2. Safety Checkpoints

The following list is not exhaustive, but it includes actions
which must be carried out at every on-site service.

CAUTION:

(1) Check external covers and the frame for sharp

edges, burrs, or nicks.

(2) Check external covers and hinges for loosening

or damage.
(3) Check wiring for squeezing or damage.
(4) Check power cord for insulation problems (con-

ductor must not be exposed).
(5) Check power cord and cable ties etc. for loosen-

ing from frame.

WARNING:

(1) Verify that the equipment is properly grounded. If

a problem is detected, establish a proper ground

connection.
(2) Connecting the ground lead to an improper point

such as listed below results in a risk of explosion

and electric shock.

Unsuitable ground points:

- Gas pipe

- Lightning rod

- Telephone line ground

- Plastic water pipe or water pipe or faucet that
has not been approved by authorities for
grounding use

1. Advance Preparation for Safety Checks

CAUTION:

(1) Wear clothing that facilitates work and is de-

signed for safety.

(2) Carry out all procedures carefully to prevent in-

jury.

3. Description of Safety Checks

CAUTION:

(1) Before performing safety check work, read all

relevant documentation (service handbook, tech­nical notices, etc.) and proceed according to the
prescribed procedure, using only the prescribed
tools. Do not carry out any adjustments not
described in the documentation.

(2) If the power cord is damaged, replace it only with

the specified power cord. If the power cord insu­lation has been damaged and there are exposed
sections, short- circuits and overheating may
occur, leading to a serious fire risk.

(3) Do not route the power cord so that it can be

stepped on or pinched. Otherwise overheating
may occur, leading to a serious fire risk.

(4) When disconnecting any cables, always grasp

the connector and not the cable (especially in the
case of AC and high-voltage leads).

(5) Carefully remove all toner remnants from electri-

cal parts, electrodes, etc.

(6) Make sure that wiring cannot come into contact

with sharp edges, burrs, or other pointed parts.

(7) Double-check to make sure that all screws, com-

ponents, wiring, connectors, etc. that were re­moved for safety check maintenance have been
reinstalled in the original location. (Pay special
attention to forgotten connectors, pinched cables,
forgotten screws, etc.)

(8) When installation and preventive maintenance,

verify that the power cord has been securely
plugged into the AC outlet. Contact problems
may lead to increased resistance, overheating,
and the risk of fire.

WARNING:

Before disassembling or adjusting the equip­ment, make sure that the power cord has been
disconnected.

[4] Measures to Take in Case of an

Accident

(1) If an accident has occurred, the distributor who has

been notified first must immediately take emergency
measures to provide relief to affected persons and to
prevent further damage.

(2) If a report of a serious accident has been received

from a customer, an on-site evaluation must be
carried out quickly and Konica Minolta must be
notified.

(3) To determine the cause of the accident, conditions

and materials must be recorded through direct on­site checks, in accordance with instructions issued
by Konica Minolta.

(4) For reports and measures concerning accidents,

consult your superior, and follow the regulations set
in "Standards for the Control Program for Measures
Against Electrical Equipment Accidents".

[5] Conclusion

(1) Safety of users and customer engineers depends

highly on accurate maintenance and administration.
Therefore, safety can be maintained by the appropri­ate by the proper daily service work conducted by the
customer engineer.

(2) When performing service, equipment on the site

must be tested for safety. The customer engineer
must verify the safety of parts and ensure appropri­ate management of the equipment.

[3]

Handling of Materials for Servicing

CAUTION: Alcohol-based and acetone- based

cleaners are highly flammable and
must be handled with care. When
using these materials for cleaning
parts, observe the following precau-

tions.
(1) Disconnect the power cord from the AC outlet.
(2) Use only a small amount of cleaner at a time and

take care not to spill any liquid. If this happens,
immediately wipe it off.

(3) Perform cleaning only in an environment where

sufficient ventilation is assured. Breathing large
quantities of organic solvents can lead to dis­comfort.

(4) Do not replace the cover or turn the unit on before

any solvent remnants on the cleaned parts have
fully evaporated.

1

OUTLINE