Lexmark 4227 - Forms Printer B/W Dot-matrix Service Manual page 38

4227-300
FRU
2 Paper Feed
3 Gear Train
4 Combination Lock
Mechanism
5 Left and Right
Hoppers
6 Pick Rollers
Paper Guides
Feed Rollers
2-14
Service Manual
Action
If the paper does not feed, do the following:
• Remove the ASF.
• Be sure the base printer feeds paper
correctly.
• If it does not feed paper correctly, go to the
"Paper feed service check" on page
2-21
.
Be sure the ASF drive gear on the inside of the
printer's right frame rotates.
Inspect the right side gear train for damage or
debris.
Remove the ASF right cover and ensure that
all gears are in good condition.
Install the ASF and press FormFeed.
If the pick drive shaft does not rotate, replace
the combination lock mechanism.
If the ASF pick rollers rotate but a single sheet
is not picked, inspect the springs and corner
separators on the left and right hoppers.
Make sure the paper load lever is in the correct
position.
Paper skew can be caused by worn, dirty, or
binding pick and feed rollers. Remove the Auto
Sheet Feeder, load paper, and hand cycle the
feeder while observing the pick and feed
rollers. If the skew problem is in the base
machine, examine all feed rollers for wear.