Lexmark 4200 Series - Manual (Page 27)

Diagnostic information 2-11
4413-XXX
Paper feed service check
If your machine does not have paper jam problems, continue with
the service check. If your machine does have a paper jam, examine
it for the following before you begin the service check:
• Check the entire paper path for obstructions.
• Be sure there is not too much paper in the sheet feeder.
• Be sure the correct type of paper is being used.
• Check for static in the paper.
FRU Action
1 System Board Run the “Power-On Self Test (POST) sequence”
on page 2-1 . Replace parts as needed. To check
the paper feed motor, disconnect the paper feed
connector CN7 and check for approximately 4
ohms between pins 1 and 4. If the reading is
incorrect, replace the paper feed motor assembly
with gears. If the reading is correct, check
connector CN7 pins 1,2,3,4 for approximately 30
volts. If the voltage is incorrect, replace the system
board Go to the
“System board removal” on
page 4-19 .