Paper Feeding Problems - Brother HL 1240 - B/W Laser Printer Service Manual

CHAPTER 6 TROUBLESHOOTING
4.3

Paper Feeding Problems

Even if the paper is printed and ejected without any problems such as paper jams, paper
feeding problems below may appear.
Users can clear these problems by following the 'User Check' items for each problem. Even if
the same problem occurs again, follow the procedures in the table below.
F-1 Double feeding
User Check
Check the paper used meets the recommended paper specifications.
Possible cause
Separation pad
F-2 Wrinkles or creases
User Check
(1) Check that paper is loaded into the paper cassette correctly.
(2) Check the paper used meets the recommended paper specifications.
(3) Try printing using the straight-through output path.
(4) Turn over the stack of paper in the cassette or try rotating the paper 180° in the cassette.
Possible cause
Paper
Fixing unit
entrance guide
Fixing unit
Step Check
1 Is the surface of the separation
pad worn out?
Step Check
1 Is the problem solved if new
paper is used?
2 Is the entrance guide dirty?
3 Is the pressure roller dirty?
Result
Yes
Result
Yes
Yes
Yes
No
6-12
Remedy
Replace the separation pad.
Remedy
Instruct the user how to store
paper so that it does not
absorb moisture.
Clean the entrance guide.
Clean the pressure roller.
Replace the fixing unit.