Lexmark X73 4402-001 - Manual (Page 25)

Diagnostic Information 2-11
4402-001
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 problem,
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 J3 and check for approximately 5 ohms
between pins 3 and 4. If the reading is incorrect,
replace the print engine. Go to the
“Print Engine
Removal” on page 4-11 . If the reading is correct,
replace the system board. Go to the “System
Board Removal” on page 4-12 .