Canon I Sensys Mf8550cdn User Guide

Is toner  running  low ?
Check how much toner is  left, and  replace  the  toner cartridges  as necessary.
Replacing Toner  Cartridges
Printouts Are Grayish
Is toner  running  low ?
Check how much toner is  left, and  replace  the  toner cartridges  as necessary.
Replacing Toner  Cartridges
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Paper Creases or Curls
Paper Creases
Is paper loaded correctly?
If  paper  is  not  loaded  below the  load limit line  or is  loaded  obliquely,  it may  crease.
Loading Paper
Are  you using paper that has absorbed moisture ?
Replace with appropriate paper.
Loading Paper
Are  you using appropriate paper?
Check usable  paper,  and  replace  with appropriate paper.
Paper
Paper Curls
Are  you using appropriate paper?
Check usable  paper,  and  replace  with appropriate paper.  Also, specify  the...

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Paper Is Fed Incorrectly
Printouts Are Skewed
Do the paper guides  align with the edges  of the paper?
If  the  paper  guides are  too loose or too tight, the  printouts are  skewed.
Loading Paper
Is the paper source the manual  feed slot ?
Load  the  paper  into the  paper  drawer.
Loading Paper in the Paper Drawer
Are  you printing on  curled envelopes?
Uncurl the  envelopes,  and  print again.
Loading Envelopes
If  the  envelopes are  not  fed properly  even after you have uncurled them,...

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When a Problem Cannot Be Solved
If  you cannot  solve a problem by referring to  the  information  in this chapter,  contact your local authorized  Canon  dealer or the  Canon
help line.
IMPORTANT
Do  not disassemble or repair  the machine yourself
If  you disassemble or repair  the  machine yourself, it may  not  be covered by warranty.
When Contacting  Canon
When  contacting us, have the  following  information  ready:Product name (MF8580Cdw  / MF8550Cdn / MF8540Cdn / MF8280Cw  / MF8230Cn)...

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Maintenance
This chapter  describes  upkeep of the  machine, including how to  clean  the  machine and  initialize settings.
Basic Cleaning Cleaning  the Machine
The machine becomes dirty  Exterior
Smudge marks appear  on  originals  or printouts 
Platen GlassFeeder
Streaks appear  on  printouts 
Fixing Unit
Print  quality  deteriorates 
Transfer Belt
Replacing Toner  Cartridges
If  you want to  check  the  remaining toner level  Replacing Toner  Cartridges
How  to  replace  toner cartridges...

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Cleaning the Machine
Regularly  clean  the  machine to  prevent  deterioration in printing quality  and  to  ensure  that  you use it safely  and  easily. Carefully read  the
safety instructions before you start cleaning. Maintenance and  Inspections
Where to Clean
Exterior  of the  machine and  ventilation slots
Exterior
Rollers  inside the  feeder
Feeder
Internal fixing unit  and  transfer belt
Fixing Unit
Transfer Belt
Platen  glass  and  the  underside  of the  feeder
Platen Glass...

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Exterior
Regularly  wipe  the  exterior of the  machine, especially  around the  ventilation slots, to  keep  the  machine in good condition.
Turn OFF  the machine, and  unplug  the power cord from the AC power outlet.
When  you turn  OFF  the  machine, data that  is  waiting  to  be printed is  deleted. Fax documents that  were received by using the
Memory Reception  function,  faxes that  are  waiting  to  be sent, and  reports that  are  automatically printed after sending and
receiving faxes...

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Platen Glass
Regularly  wipe  off  the  dust  from the  platen glass  and  the  underside  of the  feeder to  prevent  smudges to  be printed on  documents or
printouts.
Turn OFF  the machine, and  unplug  the power cord from the AC power outlet.
When  you turn  OFF  the  machine, data that  is  waiting  to  be printed is  deleted. Fax documents that  were received by using the
Memory Reception  function,  faxes that  are  waiting  to  be sent, and  reports that  are  automatically printed after...

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Feeder
Dust  and  graphite  powder  may  adhere  to  the  roller inside the  feeder and  cause  smudges to  appear  on  printouts.  To clean  the  feeder,
perform  the  following  procedure. To clean  the  feeder,  you need ten  sheets of plain  A4  or Letter size paper.  Set them in the  feeder before
performing the  following  procedure. 
Placing  Documents
Press  .
Use  /  to select ,  and  press  .
Select , and  press  .
Press  .
Cleaning  starts. When  the   message is  displayed...

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Fixing Unit
Dirt  may  adhere  to  the  fixing units inside the  machine and  cause  black streaks to  appear  on  printouts.  To clean  the  fixing unit, perform
the  following  procedure. Note that  you cannot  clean  the  fixing unit  when the  machine has documents waiting  to  be printed.  To clean  the
fixing unit, you need plain  A4  or Letter size paper.  Set the  paper  in the  paper  drawer or manual  feed  slot (
Loading Paper in the
Paper DrawerLoading Paper in the Manual Feed Slot )...