Service Manuals, User Guides, Schematic Diagrams or docs for : Konica Minolta Copiers 7020 SERVICE 7020SF0E
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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
[2] CHECKPOINTS WHEN PERFORMING
SAFETY WARNINGS ON-SITE SERVICE
Konica copiers are extensively tested before
[1] MODIFICATIONS NOT AUTHORIZED
shipping, to ensure that all applicable safety
BY Konica
standards are met, in order to protect the customer
Konica copiers are renowned for their high reliability.
and customer engineer from the risk of injury.
This reliability is achieved through high-quality design
However, in daily use, any electrical equipment may
and a solid service network.
be subject to parts wear and eventual failure. In order
to maintain safety and reliability, the customer
Photocopier design is a highly complicated and
engineer must perform regular safety checks.
delicate process where numerous mechanical,
physical, and electrical aspects have to be taken into
1. Advance Preparation for Safety
consideration, with the aim of arriving at proper
Checks
tolerances and safety factors. For this reason,
unauthorized modifications involve a high risk of
CAUTION:
degrading performance and safety. Such
(1) Wear clothing that facilitates work and is
modifications are therefore strictly prohibited. The
designed for safety.
points listed below are not exhaustive, but they
(2) Carry out all procedures carefully to prevent
illustrate the reasoning behind this policy.
injury.
(3) Be sure to disconnect the power cord of the
PROHIBITED ACTIONS :
copier and all optional equipment from the
(1) Using extension cables or a different power
AC outlet.
cord than specified by Konica.
Simply turning off the power switch is not
(2) Using other fuses than specified by Konica.
sufficient, because paper feed units or other
Safety will not be assured, leading to a risk of
electrical equipment may be powered also
fire and injury.
when the power switch is turned off.
(3) Disabling fuses or bridging fuse terminals
(4) Proceed with special care when performing
with wire, metal clips, solder or similar. (This
operation checks or adjustment while the
applies also to thermal fuses.)
unit is powered. When carrying out operation
(4) Removing air filters (except for replacement).
checks or adjustment while external covers
(5) Disabling relay functions (such as wedging
are removed, the risk of electrical shock
paper between relay contacts, etc.).
exists when touching parts which carry high
(6) Disabling safety functions (interlocks, safety
voltage or electrical charge. The risk of injury
circuits, etc.). Safety will not be assured,
exists when touching moving parts such as
leading to a risk of fire and injury.
gears or chains.
(7) Performing actions to copier not described in
the instruction manual or the service
handbook.
(8) Using parts other than specified by Konica.
C-2
SAFETY AND IMPORTANT WARNING ITEMS
2. Safety Checkpoints (2) If the power cord is damaged, replace it only
with the specified power cord. If the power
The following list is not exhaustive, but it includes
cord insulation has been damaged and there
actions which must be carried out at every on-site
are exposed sections, short-circuits and
service.
overheating may occur, leading to a serious
CAUTION: fire risk.
(1) Check external covers and the frame for (3) Do not route the power cord so that it can be
sharp edges, burrs, or nicks. stepped on or pinched. Otherwise overheat-
(2) Check external covers and hinges for ing may occur, leading to a serious fire risk.
loosening or damage. (4) When disconnecting any cables, always
(3) Check wiring for squeezing or damage. grasp the connector and not the cable
(4) Check power cord for insulation problems (especially in the case of AC and high-
(conductor must not be exposed). voltage leads).
(5) Check power cord and cable ties etc. for (5) Carefully remove all toner remnants from
loosening from frame. electrical parts, electrodes, etc.
(6) Make sure that wiring cannot come into
WARNING: contact with sharp edges, burrs, or other
(1) Verify that the copier is properly grounded. If pointed parts.
a problem is detected, establish a proper (7) Double-check to make sure that all screws,
ground connection. components, wiring, connectors, etc. that
(2) Connecting the ground lead to an improper were removed for safety check maintenance
point such as listed below results in a risk of have been reinstalled in the original location.
explosion and electric shock. (Pay special attention to forgotten connec-
Unsuitable ground points: tors, pinched cables, forgotten screws, etc.)
a. Gas pipe (8) When installation and preventive mainte-
b. Lightning rod nance, verify that the power cord has been
c. Telephone line ground securely plugged into the AC outlet. Contact
d. Plastic water pipe or water pipe or problems may lead to increased resistance,
faucet that has not been approved by overheating, and the risk of fire.
authorities for grounding use
WARNING:
(1) Before disassembling or adjusting the
3. Precautions for on-site service
optical unit or any parts that use a laser,
CAUTION: make sure that the power cord has been
(1) Before performing safety check work, read all disconnected.
relevant documentation (service handbook, (2) Do not remove the main cover of the write
technical notices, etc.) and proceed accord- unit. Direct exposure of the eye to laser
ing to the prescribed procedure, using only beams may lead to blindness.
the prescribed tools. Do not carry out any (3) Do not turn the copier on while the write unit
adjustments not described in the documen- is not installed in its normal position.
tation.
C-3
SAFETY AND IMPORTANT WARNING ITEMS
(4) Danger of explosion if battery is incorrectly CAUTION: Toner and developer are not
replaced, replace only with the same or harmful substances, but care
equivalent recommended by the manufactur- must be taken not to breathe
er. Discard used batteries according to the excessive amounts or let the
manufacture's instructions. substances come into contact
with eyes etc. If the substances
VORSICHT:
get in the eye, rinse it with plenty
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