Konica 7035 GUIDE MANUAL 7035sf0e

SAFETY AND IMPORTANT WARNING ITEMS

SAFETY AND IMPORTANT WARNING ITEMS

Read carefully the Safety and Important Warning Items described below to understand them

before doing service work.

IMPORTANT NOTICE

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

risk of damage to the copier, Konica Corporation, strongly recommends that all servicing be

performed only by Konica-trained service technicians.

Changes may have been made to this copier to improve its performance after this Service

Handbook was printed. Accordingly, Konica Corporation, makes no representations or

warranties, either expressed or implied, that the information contained in this Service

Handbook is complete or accurate. It is understood that the user of this Service Handbook

must assume all risks or personal injury and/or damage to the copier while servicing the copier

for which this Service Handbook is intended.

Therefore, this Service Handbook must be read carefully before doing service work both in the

course of the technical training and even after that, for keeping the correct maintenance and

control of the copier. Keep the Service Handbook also for the future service. When it is

impossible to read the description about safety and warning (due to contamination or tear), the

relevant page should be replaced.

DESCRIPTION ITEMS FOR DANGER, WARNING AND CAUTION

In this Service Handbook, 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 relevant works (disassembling, assembling, adjustment, repair and

maintenance) need to be conducted with utmost care.

DANGER: Actions having a high possibility of suffering death or serious

wound

WARNING: Actions having a possibility of suffering death or serious wound

CAUTION: Actions having a possibility of suffering a slight wound, medium

trouble and material damage

C-1

SAFETY AND IMPORTANT WARNING ITEMS

SAFETY WARNINGS

[1] MODIFICATIONS NOT AUTHORIZED

BY Konica

Konica copiers are renowned for their high reliability.

This reliability is achieved through high-quality design

and a solid service network.

Photocopier 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,

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.

(2) Using other fuses than specified by Konica.

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

paper between relay contacts, etc.).

(6) Disabling safety functions (interlocks, safety

circuits, etc.). Safety will not be assured,

leading to a risk of fire and injury.

(7) Performing actions to copier not described in

the instruction manual or the service

handbook.

(8) Using parts other than specified by Konica.

[2] CHECKPOINTS WHEN PERFORMING

ON-SITE SERVICE

Konica copiers are 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.

1. Advance Preparation for Safety
Checks

CAUTION:

(1) Wear clothing that facilitates work and is

designed for safety.

(2) Carry out all procedures carefully to prevent

injury.

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

copier and all optional 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

operation 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.

C-2

SAFETY AND IMPORTANT WARNING ITEMS

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

(conductor must not be exposed).

(5) Check power cord and cable ties etc. for

loosening from frame.

WARNING:

(1) Verify that the copier 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:

a. Gas pipe

b. Lightning rod

c. Telephone line ground

d. Plastic water pipe or water pipe or

faucet that has not been approved by

authorities for grounding use

3. Precautions for on-site service

CAUTION:

(1) Before performing safety check work, read all

relevant documentation (service handbook,

technical notices, etc.) and proceed accord-

ing to the prescribed procedure, using only

the prescribed tools. Do not carry out any

adjustments not described in the documen-

tation.

(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 overheat-

ing 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

electrical 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,

components, wiring, connectors, etc. that

were removed for safety check maintenance

have been reinstalled in the original location.

(Pay special attention to forgotten connec-

tors, pinched cables, forgotten screws, etc.)

(8) When installation and preventive mainte-

nance, 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:

(1) Before disassembling or adjusting the

optical unit or any parts that use a laser,

make sure that the power cord has been

disconnected.

(2) Do not remove the main cover of the write

unit. Direct exposure of the eye to laser

beams may lead to blindness.

(3) Do not turn the copier on while the write unit

is not installed in its normal position.

C-3

SAFETY AND IMPORTANT WARNING ITEMS

(4) Danger of explosion if battery is incorrectly

replaced, replace only with the same or

equivalent recommended by the manufactur-

er. Discard used batteries according to the

manufacture's instructions.

VORSICHT:

Expiosionsgefahr dei unsachegemäßem Aus-

tausch der Battetie. Ersatz nur durch densel-

ben oder einen vom. Hersteller empfohlenen

gleichwertigen Typ. Entsorgung gebrauchter

Batterien nach Angaben des Herstellers.

[3] HANDLING OF MATERIALS FOR

SERVICING

CAUTION: Drum cleaner (alcohol-based) and

roller cleaner (acetone-based) are

highly flammable and must be

handled with care. When using

these materials for cleaning of

copier parts, observe the

following precautions.

(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.

CAUTION: Toner and developer are not

harmful substances, but care

must be taken not to breathe

excessive amounts or let the

substances come into contact

with eyes etc. If the substances

get in the eye, rinse it with plenty

of water immediately. When

symptoms are noticeable, consult

a physician.

[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 re-

ceived from a customer, an on-site evaluation

must be carried out quickly and Konica Corpora-

tion must be notified.

(3) To determine the cause of the accident, condi-

tions and materials must be recorded through di-

rect on-site checks, in accordance with instruc-

tions issued by Konica Corporation.

(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 Acci-

dents".

[5] CONCLUSION

(1) Safety of users and customer engineers de-

pends highly on accurate maintenance and ad-

ministration. Therefore, safety can be main-

tained by the appropriate by the proper daily ser-

vice work conducted by the customer engineer.

(2) When performing service, each copier on the site

must be tested for safety. The customer engi-

neer must verify the safety of parts and ensure

appropriate management of the equipment.

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SAFETY AND IMPORTANT WARNING ITEMS

SAFETY INFORMATION

IMPORTANT INFORMATION

The Center for Devices and Radiological Health (CDRH) of the U.S. Food and Drug

Administration implemented regulations for laser products manufactured since August 1, 1976.

Compliance is mandatory for products marketed in the United States.

This copier is certified as a "Class 1" laser product under the U.S.

Department of Health and Human Services (DHHS) Radiation Performance Standard

according to the Radiation Control for Health and Safety Act of 1968. Since radiation emitted

inside this copier is completely confined within protective housings and external covers, the

laser beam cannot escape during any phase of normal user operation.

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SAFETY AND IMPORTANT WARNING ITEMS

SAFETY CIRCUITS

This machine's electrical circuitry includes the safety

circuits indicated below. These circuits are intended

to ensure that abnormalities do not result in major

accidents.

[1] Overall safety circuit

[2] Overheat prevention circuits for fixing heater

lamps L2 and L3

To ensure safety, these circuits must remain

operational even when servicing is in progress. Be

sure to understand the importance of these circuits,

and avoid any actions that would disable or impair

these circuits. Operation of these circuits is explained

below.

[1] Overall safety circuit protector

CBR1

NF

[2] Overheat protection circuits for

fixing heater lamps L2 and L3

TH1 TH2

PRDB

Control
section

DCPS

RL1

AC driver

section

RL1

TS

L2

L3

1. Protection function implemented by
software

The CPU reads the voltages output by TH1 and TH2

(fixing temperature sensors 1 and 2). If either voltage

is abnormal, the CPU switches off L2 (fixing heater

lamp 1), L3 (fixing heater lamp 2), and RL1 (main

relay).

CBR2

1. Protection function by circuit
breakers (CBR1 and CBR2)

Circuit breakers CBR1 and CBR2 instantly break the

connection to the AC line terminals in the event of

excess current on the AC line (short circuit, etc.).

CAUTION: CBR1/CBR2 protection must not

be disabled under any circum-

stances.

CAUTION: TH1 and TH2 are contact sensors,

and must remain in contact with

the roller (with no gap). Be sure

that there is no foreign matter

lodged between the sensor and

the roller.

RL1 functioning must not be dis-

abled under any circumstances.

C-6

2. Protection function implemented by
hardware

A comparator circuit compares the voltages output by

TH1 and TH2 (fixing temperature sensors 1 and 2)

against corresponding reference values ("abnormal

judgment" values). If either voltage exceeds the

reference value, the hardware switches off L2, L3,

and RL1.

CAUTION: Periodically check the contact

surface on sensors TH1 and TH2

(the surface that makes contact

with the roller). If the contact

surface is abnormal, replace the

sensor.

Since TH1 and TH2 remain in

contact with the roller, check to

ensure that these sensors are

installed in the correct orientation

following occurrence of any

abnormality.

RL1 functioning must not be dis-

abled under any circumstances.

SAFETY AND IMPORTANT WARNING ITEMS

3. Protection function implemented by
thermostat (TS)

TS goes OFF if the temperature of the upper fixing

roller exceeds the specified value, directly shutting off

the power supply to L2 and L3.

CAUTION: Do not disable this function. Spe-

cifically, do not replace TS with

any other electrical conductor.

Do not change the distance be-

tween TS and the roller.

C-7

SAFETY AND IMPORTANT WARNING ITEMS

DB-209/210

DB-409/410

INDICATION OF WARNING ON THE MACHINE

The caution labels are attached to the machine areas, as shown below, where you are advised

to pay special attention to avoid any dangerous situations or serious injury.

2

WARNING

This area generates
high voltage. If
touched, electrical
shock may occur. DO
NOT TOUCH!

CAUTION

The fixing unit is
very hot.
To avoid getting
burned DO NOT
TOUCH.

CAUTION

This area is very hot.
To avoid getting burned
DO NOT TOUCH.

CAUTION:

If you carry out work on the machine without reading these warning labels, an unexpected accident may

occur, resulting in possible blindness. DO NOT REMOVE these warning labels.

Do not remove caution labels. If any caution label or caution indicator is soiled, clean the label.

If you cannot make it legible or if the caution label is removed, please contact your Service Centre.

REVISED EDITION

2

DATE

Feb. 2001

C-8

PA GE

C-8

METHOD

REPLACEMENT

SAFETY AND IMPORTANT WARNING ITEMS

1

CAUTION:

You may be burned or injured if you touch any area that you are advised by any caution label to keep

1

yourself away from.

Do not remove caution labels. If any caution label or caution indicator is soiled, clean the label.

If you cannot make it legible or if the caution label is removed, please contact your Service Centre.

REVISED EDITION

1

DATE

May 2000

C-9

PA GE

C-9

REPLACEMENT

METHOD

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7020/25/30/35 LIST OF DIFFERENCE

LIST OF DIFFERENCE

Classification

Warm-up time
First copy out time

Continuous copy
speed (A4)
DB-209/409
DB-210/410
Materi-

als

Specifications

Scan
speed

Intermediate con­veyance sensor
Toner bottle SD

Toner supply
motor 2

Electrical

parts

Developing
suction fan
Polygon motor
Revolutions

Toner and
Developer
Drum
Forward
(Life size)
Reverse
(Max)

7020 7025 7030 7035

Within 30 seconds
Applox. 5 seconds

20 copies

Correspond
Correspond
Common to 7020/25/30

Common to 7020/25/30/35
140mm/sec

241mm/sec

No

Ye s

No

No

33070.9rpm

25 copies

30 copies

Ye s

No

Within 45seconds
Applox. 4.2seconds

35 copies

Not correspond

Exclusively for
7035

180mm/sec

310mm/sec

Ye s

Ye s

42519.6rpm

Reason

Specification
change

Function
improvement
Specification
change

CPM
change

Write

section

Suction filter/A

Filter cover

External

section

assembly
Toner conveyance
/supply drive

Toner supply

section

Fixing temperatu­re control

Fixing

section

Overall control

Image control

Control

No

No

Toner supply motor 1 switched across to the toner
conveyance drive with toner bottle SD

Increases the controlled temperature
(approximately + 5˚C)
for fixing heater lamps 1 and

2 during copying.
Exclusively for
7020
Exclusively for
7020

Exclusively for
7025
Exclusively for
7025

Exclusively for

7030

Exclusively for

7030

Ye s

Ye s

Driven independently
with toner supply
motor 1 and toner
supply motor 2

Exclusively for
7035
Exclusively for
7035

Specification
change

Specification
change

CPM
change

Specification
change

DB-209/210/DB-409/410 LIST OF DIFFERENCE

Classification

Paper feed motor Common to 7020/25/30

Common to 7020/25/30/35

CPM change

ReasonDB-209/409 DB-210/410

Electrical

parts

1

Blank page

2