AR-M316 (serv.man10). ARM256 316 Service Manual - Sharp Copying Equipment Service Manual (repair manual). Page 4

AR-M256/M257/M258/M316/M317/M318/5625/5631  NOTE FOR SERVICING 1 - 1

This Service Manual uses some photographs to assure safe operation.
Please understand the meanings of photographs before 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.

2) If there is any abnormality such as 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 the machine is properly grounded. Failure to ground the

machine properly may result in an electric shock or fire.

To protect the machine and the power unit from lightening, ground-
ing must be made.

4) When connecting the ground wire, never connect it to the following

points as it may cause an explosion, 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, break, or stress the power cord. Do not put heavy

objects on the power cord. Do not bend or pull the cord forcefully. It
may cause a fire or 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) Do not touch the power plug, insert a telephone jack, perform ser-

vice or operate the machine with wet or oil hands. It may cause an
electric shock.

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 extreme

care when servicing.

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 the machine while operating, be careful not to

make contact with chains, belts, gear, and any other moving parts.

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 on the PWB, use only the spec-

ified battery. If a battery of different specification is used, it may not
be compatible and cause breakdown or malfunction of the
machine. 

11) When carrying an electric unit or a PWB, use an anti-static (elec-

tricity) bag. Failure to do so may cause component failure or
machine malfunction.

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 may result.

CAUTION:

If this CAUTION should be ignored, injury or damage 
to property could result.