Paper Feed Service Check - Lexmark 3350 - X Color Inkjet Service Manual

4479-XXX

Paper feed service check

If the All-In-One does not have paper jam problems, continue with this
service check. If the All-In-One has a paper jam problem, examine the
printer for the following before you begin the service check:
•
Check the entire paper path for obstructions.
•
Ensure there is not too much paper in the sheet feeder.
•
Ensure the correct type of paper is being used.
•
Check for static in the paper.
FRU
• Paper Feed
Motor
• System Board
Automatic Sheet
Feeder Assembly
2-16
Service Manual
Action
Run the "Power-On Self Test (POST) sequence" on
page 2-1.
A noisy or chattering motor or a motor that fails to turn
can be caused by:
• A broken circuit or short-circuit in the motor
• A bind in the paper feed mechanism
Disconnect paper feed motor cable J2 from the system
board and check for approximately 5 ohms between
the two wires on the paper feed motor. If the reading is
incorrect, replace the print engine. Go to
removal" on page
check for approximately 29 V dc at connector J2 on
pins 1 and 2. If the voltage is incorrect, replace the
system board. Go to
page 4-17.
Although the paper feeds in one direction, the paper
feed motor turns in two directions. If the paper feed
motor turns in one direction only, replace the system
board. Go to "System board removal" on page
Binds in the paper feed motor or gear train can cause
intermittent false paper jam errors. Remove the paper
feed motor and check the shaft for binds. Also check
for a loose or worn motor gear. If the gear is defective,
replace the print engine. Go to
removal" on page
Check the pick roller for wear. If the pick roller is worn
and causing a paper feed problem, replace the print
engine. Go to "Print engine removal" on page
4-13. If the reading is correct,
"System board removal" on
"Print engine
4-13.
"Print engine
4-17.
4-13.