Konica Minolta 8050 Manual de usuario

SERVICE MANUAL

8050/CF5001

C500

8150

FIELD SERVICE

2004. 12

Ver. 3.0

SAFETY AND IMPORTANT WARNING ITEMS

S-1

Read carefully the Safety and Important Warning Items described below to understand them before doing ser-

vice work.

Because of possible hazards to an inexperienced person servicing this copier as well as the risk of damage to

the copier, Konica Minolta Business Technologies, INC. (hereafter called the KMBT) strongly recommends that

all servicing be performed only by KMBT-trained service technicians.

Changes may have been made to this copier to improve its performance after this Service Manual was printed.

Accordingly, KMBT does not warrant, either explicitly or implicitly, that the information contained in this Service

Manual is complete and accurate.

The user of this Service Manual must assume all risks of personal injury and/or damage to the copier while ser-

vicing the copier for which this Service Manual is intended.

Therefore, this Service Manual must be carefully read before doing service work both in the course of technical

training and even after that, for performing maintenance and control of the copier properly.

Keep this Service Manual also for future service.

In this Service Manual, each of three expressions “ DANGER”, “ WARNING”, and “ CAUTION” is defined

as follows together with a symbol mark to be used in a limited meaning.

When servicing the copier, the relevant works (disassembling, reassembling, adjustment, repair, maintenance,

etc.) need to be conducted with utmost care.

Symbols used for safety and important warning items are defined as follows:

SAFETY AND IMPORTANT WARNING ITEMS

IMPORTANT NOTICE

DESCRIPTION ITEMS FOR DANGER, WARNING AND

CAUTION

DANGER :Action having a high possibility of suffering death or serious injury

WARNING:Action having a possibility of suffering death or serious injury

CAUTION :Action having a possibility of suffering a slight wound, medium trouble, and

property damage

:Precaution when using the copier. General precaution Electric hazard High temperature

:Prohibition when using the copier. General prohibition Do not touch with wet hand Do not disassemble

:Direction when using the copier. General instruction Unplug Ground/Earth

SAFETY AND IMPORTANT WARNING ITEMS

S-2

1. MODIFICATIONS NOT AUTHORIZED BY

KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.

Konica Minolta brand copiers are renowned for their high reliability. This reliability is achieved through high-quality design

and a solid service network.

Copier design is a highly complicated and delicate process where numerous mechanical, physical, and electrical aspects

have to be taken into consideration, with the aim of arriving at proper tolerances and safety factors. For this reason, unau-

thorized modifications involve a high risk of degradation in performance and safety. Such modifications are therefore

strictly prohibited. the points listed below are not exhaustive, but they illustrate the reasoning behind this policy.

SAFETY WARNINGS

PROHIBITED ACTIONS

DANGER

• Using any cables or power cord not specified by KMBT.

• Using any fuse or thermostat not specified by KMBT. Safety will not be

assured, leading to a risk of fire and injury.

• Disabling fuse functions or bridging fuse terminals with wire, metal clips, sol-

der or similar object.

• Disabling relay functions (such as wedging paper between relay contacts)

• Disabling safety functions (interlocks, safety circuits, etc.) Safety will not be

assured, leading to a risk of fire and injury.

• Making any modification to the copier unless instructed by KMBT

• Using parts not specified by KMBT

SAFETY AND IMPORTANT WARNING ITEMS

S-3 2

2. CHECKPOINTS WHEN PERFORMING ON-SITE SERVICE

Konica Minolta brand copiers are extensively tested before shipping, to ensure that all applicable safety standards are met,

in order to protect the customer and customer engineer (hereafter called the CE) 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 CE must perform regular safety checks.

2.1 Power Supply

Connection to Power Supply

WARNING

• Check that mains voltage is as specified. Plug the power cord into the dedi-

cated wall outlet with a capacity greater than the maximum power consump-

tion.

If excessive current flows in the wall outlet, fire may result.

• If two or more power cords can be plugged into the wall outlet, the total load

must not exceed the rating of the wall outlet.

If excessive current flows in the wall outlet, fire may result.

• Connect power plug directly into wall outlet having same configuration as the

plug.

Use of an adapter leads to the product connecting to inadequate power

supply (voltage, current capacity, grounding), and may result in fire or elec-

tric shock.

If proper wall outlet is not available, advice the customer to contact quali-

fied electrician for the installation.

• Make sure the power cord is plugged in the wall outlet securely.

Contact problems may lead to increased resistance, overheating, and the

risk of fire.

Ground Lead

WARNING

• Check whether the copier is grounded properly.

If current leakage occurs in an ungrounded copier, you may suffer electric

shock while operating the copier. Connect the ground lead to one of the

following points:

a. Ground terminal of wall outlet

b. Ground terminal for which Class D work has been done

SAFETY AND IMPORTANT WARNING ITEMS

S-4

• Pay attention to the point to which the ground lead is connected.

Connecting the ground lead to an improper point such as the points listed

below results in a risk of explosion and electric shock:

a. Gas pipe (A risk of explosion or fire exists.)

b. Lightning rod (A risk of electric shock or fire exists.)

c. Telephone line ground (A risk of electric shock or fire exists in the case

of lightning.)

d. Water pipe or faucet (It may include a plastic portion.)

Power Plug and Cord

WARNING

• For the products that use the power cord set (inlet type), be sure to follow the

directions given below.

When securing measure is provided, secure the cord with the fixture prop-

erly.

a. Be sure to check to see if the power cord is securely inserted into the

main body side inlet.

b. When the fixing of the cord is indicated in the installation instructions,

be sure to fix it securely by using the fixing materials provided in the

same package.

c. When the power cord is damaged with its sheath broken, be sure to

replace it with the specified power cord set.

When the power cord is not securely inserted, an abnormal heat may gen-

erates due to a poor contact of the cord, thus resulting in a fire.

• Check whether the power cord is not stepped on or pinched by a table and

so on.

Overheating may occur there, leading to a risk of fire.

• Check whether the power cord is damaged. Check whether the sheath is

damaged.

If the power plug, cord, or sheath is damaged, replace with a new power

cord (with plugs on both ends) specified by KMBT. Using the damaged

power cord may result in fire or electric shock.

• Do not bundle or tie the power cord.

Overheating may occur there, leading to a risk of fire.

Ground Lead

WARNING

SAFETY AND IMPORTANT WARNING ITEMS

S-5 2

2.2. Installation Requirements

• Check whether dust is collected around the power plug and wall outlet.

Using the power plug and wall outlet without removing dust may result in

fire.

• Do not insert the power plug into the wall outlet with a wet hand.

The risk of electric shock exists.

• When unplugging the power cord, grasp the plug, not the cable.

The cable may be broken, leading to a risk of fire and electric shock.

Wiring

WARNING

• Never use multi-plug adapters to plug multiple power cords in the same out-

let.

If used, the risk of fire exists.

• When an extension cord is required, use a specified one.

Current that can flow in the extension cord is limited, so using a too long

extension cord may result in fire.

Do not use an extension cable reel with the cable taken up. Fire may

result.

Prohibited Installation Place

WARNING

• Do not place the copier near flammable materials such as curtains or volatile

materials that may catch fire.

A risk of fire exists.

• Do not place the copier in a place exposed to water such as rain water.

A risk of fire and electric shock exists.

Power Plug and Cord

WARNING

SAFETY AND IMPORTANT WARNING ITEMS

S-6

When not using product for a long time

WARNING

• When the copier is not used over an extended period of time (holidays, etc.),

switch it off and unplug the power cord.

Dust collected around the power plug and outlet may cause fire.

Ventilation

CAUTION

• The copier generates ozone gas during operation, but it is not sufficient to be

harmful to the human body.

If a bad smell of ozone is present in the following cases, ventilate the

room.

a. When the copier is used in a poorly ventilated room

b. When taking a lot of copies

c. When using multiple copiers at the same time

Fixing

CAUTION

• Be sure to lock the caster stoppers.

In the case of an earthquake and so on, the copier may slide, leading to a

injury.

Inspection before Servicing

CAUTION

• Before conducting an inspection, read all relevant documentation (service

manual, technical notices, etc.) and proceed with the inspection following the

prescribed procedure in safety clothes, using only the prescribed tools. Do

not make any adjustment not described in the documentation.

If the prescribed procedure or tool is not used, the copier may break and a

risk of injury or fire exists.

• Before conducting an inspection, be sure to disconnect the power plugs from

the copier and options.

When the power plug is inserted in the wall outlet, some units are still pow-

ered even if the POWER switch is turned OFF. A risk of electric shock

exists.

SAFETY AND IMPORTANT WARNING ITEMS

S-7 2

• The area around the fixing unit is hot.

You may get burnt.

Work Performed with the Copier Powered

WARNING

• Take every care when making adjustments or performing an operation check

with the copier powered.

If you make adjustments or perform an operation check with the external

cover detached, you may touch live or high-voltage parts or you may be

caught in moving gears or the timing belt, leading to a risk of injury.

• Take every care when servicing with the external cover detached.

High-voltage exists around the drum unit. A risk of electric shock exists.

Safety Checkpoints

WARNING

• Check the exterior and frame for edges, burrs, and other damages.

The user or CE may be injured.

• Be careful not to drop metal chips such as a clip, staple and/or a screw into

the inside of the product or its gaps.

A short circuit may occurs inside the product, thus resulting in an electric

shock and/or a fire.

• Check wiring for squeezing and any other damage.

Current can leak, leading to a risk of electric shock or fire.

• Carefully remove all toner remnants and dust from electrical parts and elec-

trode units such as a charging corona unit.

Current can leak, leading to a risk of copier trouble or fire.

• Check high-voltage cables and sheaths for any damage.

Current can leak, leading to a risk of electric shock or fire.

• Check electrode units such as a charging corona unit for deterioration and

sign of leakage.

Current can leak, leading to a risk of trouble or fire.

Inspection before Servicing

CAUTION

SAFETY AND IMPORTANT WARNING ITEMS

S-8

• Before disassembling or adjusting the write unit incorporating a laser, make

sure that the power cord has been disconnected.

The laser light can enter your eye, leading to a risk of loss of eyesight.

• Do not remove the cover of the write unit. Do not supply power with the write

unit shifted from the specified mounting position.

The laser light can enter your eye, leading to a risk of loss of eyesight.

• When replacing a lithium battery, replace it with a new lithium battery speci-

fied in the Parts Guide Manual. Dispose of the used lithium battery using the

method specified by local authority.

Improper replacement can cause explosion.

• After replacing a part to which AC voltage is applied (e.g., optical lamp and

fixing lamp), be sure to check the installation state.

A risk of fire exists.

• Check the interlock switch and actuator for loosening and check whether the

interlock functions properly.

If the interlock does not function, you may receive an electric shock or be

injured when you insert your hand in the copier (e.g., for clearing paper

jam).

• Make sure the wiring cannot come into contact with sharp edges, burrs, or

other pointed parts.

Current can leak, leading to a risk of electric shock or fire.

• Make sure that all screws, components, wiring, connectors, etc. that were

removed for safety check and maintenance have been reinstalled in the orig-

inal location. (Pay special attention to forgotten connectors, pinched cables,

forgotten screws, etc.)

A risk of copier trouble, electric shock, and fire exists.

Safety Checkpoints

WARNING

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