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 does not warrant, either explicitly or implicitly, that the information contained in
this Service Handbook is complete and accurate.
The user of this Service Handbook must assume all risks of 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 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 Handbook also for 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 copier, the relevant works (disassembling, reassembling, adjustment, repair, maintenance,
etc.) need to be conducted with utmost care.
DANGER : Actions having a high possibility of suffering death or serious injury
WARNING : Actions having a possibility of suffering death or serious injury
CAUTION : Actions having a possibility of suffering a slight wound, medium trouble, and
property damage
Symbols used for safety and important warning items are defined as follows:
: Precaution when using the copier.
General precaution Electric hazard High temperature
: Prohibition when using the copier.
: Direction when using the copier.
REVISED EDITION
3
DATE
Jan. 2002
General prohibition
Genera instruction
S-1
Do not touch with wet hand
Unplug Ground/Earth
PAGE
C-1
Do not disassemble
METHOD
REPLACEMENT
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.
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, unauthorized
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.
DANGER : PROHIBITED ACTIONS
• Using any cables or power cord not specified by Konica.
• Using any fuse or thermostat not specified by Konica. Safety will not be
assured, leading to a risk of fire and injury.
• Disabling fuse functions or bridging fuse terminals with wire, metal clips,
solder 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 Konica
• Using parts not specified by Konica
REVISED EDITION
REVISED EDITION
1
3
DATE
DATE
May 2000
Jan. 2002
S-2
PAGE
PAGE
C-9
C-2
METHOD
METHOD
REPLACEMENT
REPLACEMENT
SAFETY AND IMPORTANT WARNING ITEMS
[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 (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.
1. Power Supply
WARNING: Wall Outlet
• Check that mains voltage is as specified. Plug the power cord into the
dedicated wall outlet with a capacity greater than the maximum power
consumption.
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.
kw
WARNING: Power Plug and Cord
• 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.
• 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 Konica. Using the damaged
power cord may result in fire or electric shock.
• When using the power cord (inlet type) that came with this copier, be sure
to observe the following precautions:
a. Make sure the copier-side power plug is securely inserted in the socket
on the rear panel of the copier.
Secure the cord with a fixture properly.
b. If the power cord or sheath is damaged, replace with a new power cord
(with plugs on both ends) specified by Konica.
If the power cord (inlet type) is not connected to the copier securely, a
contact problem may lead to increased resistance, overheating, and
risk of 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.
REVISED EDITION
3
DATE
Jan. 2002
S-3
PAGE
C-3
METHOD
REPLACEMENT
SAFETY AND IMPORTANT WARNING ITEMS
WARNING: Power Plug and Cord
• Do not bundle or tie the power cord.
Overheating may occur there, leading to a risk of fire.
• 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.
WARNING: Wiring
• Never use multi-plug adapters to plug multiple power cords in the same
outlet.
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.
WARNING: Ground Lead
• 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
REVISED EDITION
REVISED EDITION
1
3
DATE
DATE
May 2000
Jan. 2002
S-4
PAGE
PAGE
C-9
C-4
METHOD
METHOD
REPLACEMENT
REPLACEMENT
SAFETY AND IMPORTANT WARNING ITEMS
WARNING: Ground Lead
• 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.)
2.Installation Requirements
WARNING: Prohibited Installation Place
• 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.
WARNING: Nonoperational Handling
• 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.
CAUTION: Temperature and Humidity
• Do not place the copier in a place exposed to direct sunlight or near a heat
source such as a heater.
A risk of degradation in copier performance or deformation exists.
Do not place the copier in a place exposed to cool wind.
Recommended temperature and humidity are as follows:
Temperature: 10°C to 30°C
Humidity: 10% to 80% (no dew condensation)
Avoid other environments as much as possible.
CAUTION: Ventilation
• Do not place the copier in a place where there is much dust, cigarette
smoke, or ammonia gas.
Place the copier in a well ventilated place to prevent machine problems
and image faults.
REVISED EDITION
3
DATE
Jan. 2002
S-5
PAGE
C-5
METHOD
REPLACEMENT
SAFETY AND IMPORTANT WARNING ITEMS
CAUTION: Ventilation
• 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
CAUTION: Vibration
• When installing the copier, read the Installation Guide thoroughly. Be sure
to install the copier in a level and sturdy place.
Constant vibration will cause problems.
• Be sure to lock the caster stoppers.
In the case of an earthquake and so on, the copier may slide, leading to
a injury.
CAUTION: Inspection before Servicing
• Before conducting an inspection, read all relevant documentation (service
handbook, technical notices, etc.) and proceed with the inspection
following the prescribed procedure, 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
powered even if the POWER switch is turned OFF. A risk of electric
shock exists.
• The area around the fixing unit is hot.
You may get burnt.
DANGER: Work Performed with the Copier Powered
• 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.
REVISED EDITION
REVISED EDITION
1
3
DATE
DATE
May 2000
Jan. 2002
S-6
PAGE
PAGE
C-9
C-6
METHOD
METHOD
REPLACEMENT
REPLACEMENT
SAFETY AND IMPORTANT WARNING ITEMS
DANGER: Work Performed with the Copier Powered
• Take every care when servicing with the external cover detached.
High-voltage exists around the drum unit. A risk of electric shock exists.
WARNING: Safety Checkpoints
• Check the exterior and frame for edges, burrs, and other damages.
The user or CE may be injured.
• Do not allow any metal parts such as clips, staples, and screws to fall into the
copier.
They can short internal circuits and cause electric shock or fire.
• Check wiring for squeezing and any other damage.
Current can leak, leading to a risk of electric shock or fire.
• When disconnecting connectors, grasp the connector, not the cable.
(Specifically, connectors of the AC line and high-voltage parts)
Current can leak, leading to a risk of electric shock or fire.
• Carefully remove all toner remnants and dust from electrical parts and
electrode 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.
• 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
specified in the Parts Guide Manual. Dispose of the used lithium battery
using the method specified by local authority.
Improper replacement can cause explosion.
REVISED EDITION
3
DATE
Jan. 2002
S-7
PAGE
C-7
METHOD
REPLACEMENT
SAFETY AND IMPORTANT WARNING ITEMS
WARNING: Safety Checkpoints
• 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
original location. (Pay special attention to forgotten connectors, pinched
cables, forgotten screws, etc.)
A risk of copier trouble, electric shock, and fire exists.
DANGER: Handling of Service Materials
• Unplug the power cord from the wall outlet.
Drum cleaner (isopropyl alcohol) and roller cleaner (acetone-based) are
highly flammable and must be handled with care. A risk of fire exists.
• Do not replace the cover or turn the copier ON before any solvent remnants
on the cleaned parts have fully evaporated.
A risk of fire exists.
• 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.
A risk of fire exists.
• When using any solvent, ventilate the room well.
Breathing large quantities of organic solvents can lead to discomfort.
REVISED EDITION
REVISED EDITION
1
3
DATE
DATE
May 2000
Jan. 2002
S-8
PAGE
PAGE
C-9
C-8
METHOD
METHOD
REPLACEMENT
REPLACEMENT
SAFETY AND IMPORTANT WARNING ITEMS
DANGER: Handling of Service Materials
• 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. It may be stimulative.
If the substances get in the eye, rinse with plenty of water immediately.
When symptoms are noticeable, consult a physician.
• Never throw the used cartridge and toner into fire.
You may be burned due to dust explosion.
[3] 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 Corporation must be notified.
3. To determine the cause of the accident, conditions and materials must be recorded through direct on-site checks, in
accordance with instructions issued by Konica Corporation.
4. For reports and measures concerning serious accidents, follow the regulations given in "Serious Accident Report/
Follow-up Procedures."
[4] CONCLUSION
1. Safety of users and customer engineers depends highly on accurate maintenance and administration. Therefore, safety
can be maintained by the appropriate daily service work conducted by the customer engineer.
2. When performing service, each copier on the site must be tested for safety. The customer engineer must verify the
safety of parts and ensure appropriate management of the equipment.
REVISED EDITION
3
DATE
Jan. 2002
S-9
PAGE
C-9
METHOD
REPLACEMENT
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.
REVISED EDITION
REVISED EDITION
1
3
DATE
DATE
May 2000
Jan. 2002
S-10
PAGE
PAGE
C-9
C-10
METHOD
METHOD
REPLACEMENT
ADDITION
SAFETY CIRCUITS
SAFETY AND IMPORTANT WARNING ITEMS
This machine is provided with the following safety circuits
to prevent machine faults from resulting in serious
accidents.
[1] Overall safety circuit
[2] L2 and L3 (fixing heater lamps) overheating
prevention circuit
These safety circuits are described below to provide the
service engineer with a renewed awareness of them in
order to prevent servicing errors that may impair their
functions.
[1] Overall safety circuit protector
CBR1
NF
CBR2
1. Protection by CBR1 and CBR2 (circuit
breakers)
CBR1 and CBR2 interrupt the AC line instantaneously
when an excessive current flows due to a short in the
AC line.
CAUTION:
The CBR1 and CBR2 functions must not be
deactivated under any circumstances.
[2] Protection by L2 and L3 (fixing heater
lamps) overheating prevention circuit
DCPS
RL1
PRDB
RL1
TH1 TH2
Control
section
AC driver
section
1. Protection by software
The output voltage from TH1 and TH2 (fixing
temperature sensors 1 and 2) is read by the CPU. If
this voltage is abnormal, L2 (fixing heater lamp 1), L3
(fixing heater lamp 2) and RL1 (main relay) are
turned OFF.
CAUTION:
Do not change the gap between the roller
and TH1, between the roller and TH2. When
replacing TH1, check the specified mounting
dimensions. The RL1 function must not be
deactivated under any circumstances.
TS
L2
L3
REVISED EDITION
3
DATE
Jan. 2002
S-11
PAGE
C-11
METHOD
ADDITION
SAFETY AND IMPORTANT WARNING ITEMS
2. Protection by the hardware circuit
The output voltages from TH1 and TH2 (fixing
temperature sensors) are compared with the
abnormality judgment reference value in the
comparator circuit. If the output voltage from TH1 or
TH2 exceeds the reference value, L2 (fixing heater
lamp 1), L3 (fixing heater lamp 2) and RL1 (main
relay) are turned OFF in hardware means.
CAUTION:
Periodically check the TH1 and TH2 face
contacting the roller, and replace TH1 and
TH2 if any abnormality is detected.
Since TH1 and TH2 face does not contact
the roller, check the distance from the roller
and the sensor orientation if any abnormality
is detected.
The RL1 function must not be deactivated
under any circumstances.
3. Protection by TS (thermostat)
When the temperature of the upper fixing roller
exceeds the specified value, TS are turned OFF, thus
interrupting the power to L2 (fixing heater lamp 1)
and L3 (fixing heater lamp 2) directly.
CAUTION:
Do not use any other electrical conductor in
place of TS. Do not change the distance
between the roller and TS (thermostat).
REVISED EDITION
REVISED EDITION
1
3
DATE
DATE
May 2000
Jan. 2002
S-12
PAGE
PAGE
C-9
C-12
METHOD
METHOD
REPLACEMENT
ADDITION
SAFETY AND IMPORTANT WARNING ITEMS
DB-209/210
DB-409/410
INDICATION OF WARNING ON THE MACHINE
Caution labels shown below are attached in some areas on/in the machine.
When accessing these areas for maintenance, repair, or adjustment, special care should be taken to avoid burns and electric
shock.
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: The internal heater of the 7022/
7130 is an option, so this label is
not provided.
CAUTION:
You may be burned or injured if you touch any area that you are advised by any caution label to keep yourself
away from.
Do not remove caution labels. If any caution label has come off or soiled and therefore the caution cannot be
read, contact our Service Office.
REVISED EDITION
3
DATE
Jan. 2002
S-13
PAGE
C-13
METHOD
ADDITION
SAFETY AND IMPORTANT WARNING ITEMS
CAUTION:
You may be burned or injured if you touch any area that you are advised by any caution label to keep yourself
away from.
Do not remove caution labels. If any caution label has come off or soiled and therefore the caution cannot be
read, contact our Service Office.
REVISED EDITION
REVISED EDITION
1
3
DATE
DATE
May 2000
Jan. 2002
S-14
PAGE
PAGE
C-9
C-14
METHOD
METHOD
REPLACEMENT
ADDITION
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