Lexmark C 950 Service Manual

Connector locations 5-49
  5058-030
Go Back Previous
Next
High capacity feeder 1
Plug/JackCalloutPlug/jack descriptionConnects to
  J678   10  Lower engine PCBAHCF controller card PCBA 
  J800   11  
  PF/JF54   2 Sensor (tray 5 feed out)HCF controller card PCBA 
  PF/JF56   9 HCF feed lift motorHCF controller card PCBA 
  PF/JF56A   9 Sensor (tray 5 media out)HCF controller card PCBA 
  PF/JF56B   9 HCF controller card PCBA• Sensor (tray 5 media level)
• Sensor (tray 5 pre-feed)
  PF/JF58   1 HCF feed...

5-50  Service Manual 5058-030  
Go Back Previous
Next
High capacity feeder 2
Plug/JackCalloutPlug/jack descriptionConnects to
  PF/JF01   4 HCF controller card PCBA• Sensor (HCF media size)
• Sensor (tray 5 feed out)
  PF/JF02   5 HCF controller card PCBA• Sensor (tray 5 media out)
• Sensor (tray 5 pre-feed)
• Sensor (tray 5 media level)
  PF/JF03   6 HCF controller card PCBA• Lower engine PCBA
• Upper engine PCBA
  PF/JF04   7 HCF controller card PCBABase printer
  PF/JF05   8 HCF controller card...

Preventive maintenance 6-1
  5058-030
Go Back Previous
Next
6.  Preventive maintenance
This chapter describes procedures for printer preventive maintenance. Follow these recommendations to help 
prevent problems and maintain optimum performance.
Inspection guide
The purpose of this inspection guide is to aid you in identifying the intervals, based on page count, at which parts 
must be inspected (for visible physical damage), cleaned, or replaced. 
As you service the machine, check the following:...

6-2  Service Manual 5058-030  
Go Back Previous
Next
Lubrication specifications
Lubricate only when parts are replaced or as needed, not on a scheduled basis. Use of lubricants other than 
those specified can cause premature failure. Some unauthorized lubricants may chemically attack 
polycarbonate parts. Use IBM no. 10 oil, P/N 1280443 (Approved equivalents: Mobil DTE27, Shell Tellus 100, 
Fuchs Renolin MR30), IBM no. 23 grease (Approved equivalent Shell Darina 1), and grease, P/N 99A0394 to 
lubricate...

Preventive maintenance 6-3
  5058-030
Go Back Previous
Next
Scheduled maintenance
The LCD displays 80 scheduled maintenance (xxxK) when it reaches 160K, 320K and 480K page counts. It is 
necessary to replace the appropriate maintenance kit at this interval to maintain the print quality and reliability of 
the printer. 
The LCD displays 80 scheduled maintenance (80K) when multiple jams occur from a specific media feeder after 
the counter exceeds 80K. It is necessary to replace the media feed rollers at...

6-4  Service Manual 5058-030  
Go Back Previous
Next
After replacing the kit, the maintenance count must be reset to zero to clear the “80 scheduled maintenance” 
message. 
To reset the maintenance count
1.Turn off the printer.
2.Enter the Configuration Menu.
2.1Press and hold the 2 and 6 buttons simultaneously.
2.2Turn on the printer.
2.3Release the buttons after 10 seconds. The Configuration Menu appears on the LCD.
3.Touch Reset Maintenance Counter from the Configuration Menu. 
4.From the options...

Preventive maintenance 6-5
  5058-030
Go Back Previous
Next
Cleaning the printer
Cleaning the exterior of the printer
1.Make sure that the printer is turned off and unplugged from the electrical outlet.
2.Remove paper from the standard exit bin.
3.Dampen a clean, lint-free cloth with water.
Warning:  Do not use household cleaners or detergents, as they may damage the finish of the printer.
4.Wipe only the outside of the printer, making sure to include the standard exit bin.
Warning:  Do not use household...

6-6  Service Manual 5058-030  
Go Back Previous
Next
Cleaning the printhead lenses
Clean the printhead lenses when you encounter print quality problems.
1.Open the front door.
2.Slide the release lever to the left to unlock the cover. 

Preventive maintenance 6-7
  5058-030
Go Back Previous
Next
3.Open the cover.
Warning:  To avoid overexposing the photoconductor unit, do not leave the cover open for more than 10 
minutes.
4.Locate the printhead wipers. 

6-8  Service Manual 5058-030  
Go Back Previous
Next
5.Gently pull the printhead wipers out until it stops, and then slowly slide them back into place.
6.Close the cover.
3x
3x
3x