Sharp AR-235 - Manual (Page 4)

AR-235/275 NOTE FOR SERVICING - 1
[1] NOTE FOR SERVICING
This Service Manual uses some photographs to assure safe operation.
This Service Manual uses some photographs to assure safe operation.
Please understand the meanings of photographs before servicing.
1. Warning for servicing
1) Be sure to connect the power cord only to a power outlet that
meets the specified voltage and current requirements.
Avoid complex wiring, which may lead to a fire or an electric shock.
It may cause a fire or an electric shock.
2) If there is any abnormality such as a smoke or an abnormal smell,
interrupt the job and disconnect the power plug.
It may cause a fire or an electric shock.
3) Be sure to connect the grounding wire. If an electric leakage
occurs without grounding, a fire or an electric shock may be the
result.
To protect the machine and the power unit from lightening, ground-
ing must be made.
4) When connecting the grounding wire, never connect it to the fol-
lowing points.
It may cause an explosion, a fire or an electric shock.
• Gas tube
• Lightning conductor
• A water pipe or a water faucet, which is not recognized as a
grounding object by the authorities.
• Grounding wire for telephone line
5) Do not damage, brake, or work the power cord.
Do not put heavy objects on the power cable. Do not bend it forc-
ibly or do not pull it extremely.
It may cause a fire or an electric shock.
6) Keep the power cable away from a heat source.
Do not insert the power plug with dust on it into a power outlet.
It may cause a fire or an electric shock.
7) Do not put a receptacle with water in it or a metal piece which may
drop inside the machine.
It may cause a fire or an electric shock.
8) With wet or oily hands, do not touch the power plug, do not insert
the telephone line jack, do not operate the machine, or do not per-
form servicing.
It may cause an electric shock.
2. Precautions for servicing
1) When servicing, disconnect the power plug, the printer cable, the
network cable, and the telephone line from the machine, except
when performing the communication test, etc.
It may cause an injury or an electric shock.
2) There is a high temperature area inside the machine. Use an
extreme care when servicing.
It may cause a burn.
3) There is a high voltage section inside the machine which may
cause an electric shock . Be careful when servicing.
4) Do not disassemble the laser unit. Do not insert a reflective mate-
rial such as a screwdriver in the laser beam path.
It may damage eyes by reflection of laser beams.
5) When servicing with the machine operating, be careful not to
squeeze you hands by the chain, the belt, the gear, and other driv-
ing sections.
6) Do not leave the machine with the cabinet disassembled.
Do not allow any person other than a serviceman to touch inside
the machine. It may cause an electric shock, a burn, or an injury.
7) When servicing, do not breathe toner, developer, and ink exces-
sively. Do not get them in the eyes.
If toner, developer, or ink enters you eyes, wash it away with water
immediately, and consult a doctor if necessary.
8) The machine has got sharp edges inside. Be careful not to dam-
age fingers when servicing.
9) Do not throw toner or a toner cartridge in a fire. Otherwise, toner
may pop and burn you.
10) When replacing the lithium battery of the PWB, use a specified one
only.
If a battery of different specification is used, it may be broken,
causing breakdown or malfunction of the machine.
11) When carrying a unit with PWB or electronic parts installed to it, be
sure to put it in an anti-static-electricity bag.
It may cause a breakdown or malfunctions.
3. Note for installing site
Do not install the machine at the following sites.
1) Place of high temperature, high humidity, low temperature, low
humidity, place under an extreme change in temperature and
humidity.
Paper may get damp and form dews inside the machine, causing
paper jam or copy dirt.
For operating and storing conditions, refer to the specifications
described later.
2) Place of much vibrations
It may cause a breakdown.
3) Poorly ventilated place
An electro-static type copier will produce ozone inside it.
The quantity of ozone produced is designed to a low level so as
not to affect human bodies. However, continuous use of such a
machine may produce a smell of ozone. Install the machine in a
well ventilated place, and ventilate occasionally.
4) Place of direct sunlight.
Plastic parts and ink may be deformed, discolored, or may undergo
qualitative change.
It may cause a breakdown or copy dirt.
5) Place which is full of organic gases such as ammonium
The organic photoconductor (OPC) drum used in the machine may
undergo qualitative change due to organic gases such as ammo-
nium.
Installation of this machine near a diazo-type copier may result in
dirt copy.
6) Place of much dust
When dusts enter the machine, it may cause a breakdown or copy
dirt.
7) Place near a wall
Some machine require intake and exhaust of air.
If intake and exhaust of air are not properly performed, copy dirt or
a breakdown may be resulted.
8) Unstable or slant surface
If the machine drops or fall down, it may cause an injury or a break-
down.
If there are optional paper desk and the copier desk specified, it is
recommendable to use them.
When using the optional desk, be sure to fix the adjuster and lock
the casters.
WARNING: If this WARNING should be ignored, a serious danger
to life or a serious injury would be resulted.
CAUTION: If this CAUTION should be ignored, an injury or a
damage to properties would be resulted.