MX-2640N, MX-2640NR, MX-2640FN, MX-3140N, MX-3140NR, MX-3140FN, MX-3640N, MX-3640NR, MX-3640FN (serv.man9). Service Manual Revised June 2014. - Sharp Copying Equipment Service Manual (repair manual). Page 5

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MX-3640N  NOTE FOR SERVICING - i
MX-3640N
Service Manual
 
NOTE FOR SERVICING
1. Precautions for servicing
• 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.
• There  is a high temp erature  area inside the machin e.  Use 
extreme care when servicing.
It may cause a burn.
• There  is a   high  voltage  section inside  the  machine  which  may 
cause an electric shock. Be careful when servicing.
• Do  not  disassemble  the  laser  unit.  Do  not inse rt  a r eflective 
material such as a screwdriver in the laser beam path.
It may damage eyes by reflection of laser beams.
• When  servicing  with  the machine opera ting,  be care ful  not to  
squeeze you  hands  by the ch ain,  the be lt,  the gea r,  and other  
driving sections.
• 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.
• When servicing, do not breathe toner, developer, and ink exces-
sively. Do not get them in the eyes.
If  toner,  developer,  or  ink enter s  your  eyes, wash it   away  with 
water immediately, and consult a doctor if necessary.
• The machine has got sharp edges inside. Be careful not to dam-
age fingers when servicing.
• Do not throw toner or a toner cartridge in a fire. Otherwise, toner 
may ignite and burn you.
• When replacing a lithium battery on a PWB, only use the speci -
fied replacement battery.
If  a  battery  of  different  specification  is  used, it ma y  cause a  
machine malfunction or breakdown.
• 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 otherwise cause a machine breakdown or malfunction.
2. Warning for servicing
• Be  sure  to  connect the  power  cord  only to a  power  outlet that  
meets the specified voltage and current requirements.
Avoid  complex w iring,  which  may  lead  to a  fire  or  an electric 
shock.
It may cause a fire or an electric shock.
• If  there is any abnormality such   as  a smoke or an abnor mal 
smell, interrupt the job and disconnect the power plug.
It may cause a fire or an electric shock.
• Be  sure to  connect  the  grounding  wire.  If an  electric  leakage 
occurs without grounding, a fire or an electric shock may result.
To  protect  the machine and the  power  unit fro m  lightening, 
grounding must be made.
• When connecting the grounding wire, never connect it to the fol-
lowing points.
  Gas tube
  Lightning conductor
  A water pipe or a water  faucet, which is not r ecognized as a 
  grounding object by the authorities.
  Grounding wire for telephone line
It may cause an explosion, a fire or an electric shock.
• Do not damage, break, or stress the power cord.
Do not put heavy objects on the power cable. Do not stress, forc-
ibly bend, or pull the power cord.
It may cause a fire or an electric shock.
• 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.
• Do  not place liqu ids  or  foreign  metallic  objects  inside  the 
machine.
It may cause a fire or an electric shock.
• Do not touch the power cord, insert the phone jack, oper ate the 
machine,  or  perform  service on  the  machine  with wet o r  oily 
hands.
It may cause an electric shock.
3. Note for installing site
Do not install the machine at the following sites.
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 condensation inside the machine, 
causing paper jam or copy dirt.
For operating and storing conditions, refer to the specifications 
described later.
Place of extreme vibrations
It may cause a breakdown.
Poorly ventilated place
An electrostatic type copier will produce ozone.
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 an ozone smell. Install the machine in a 
well ventilated place.
CAUTION
DOUBLE POLE/NEUTRAL FUSING
(200V series only)
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