Brother LX-300 Service Manual page 170

13
Incorrect cutting position at document front or rear edge.
a. Defect in paper feed system.
b. Defect in paper sensor system.
Problem
a. Defect in paper Do gear holder and idle gear
feed system B move smoothly?
Does the rollers slip?
Is LF motor out of step?
b. Defect in paper Defective paper sensor
sensor system
Deformed actuator top?
Does the actuator top work
smoothly?
Check Item
Defective operation of
gear holder and idle
gear B.
Dirt or other foreign
matter stuck to rollers.
Defective driving roller
shaft.
Defective paper
sensor.
See
Defective actuator top.
Defective actuator top.
Cause Remedy
Apply KS64F silicon
grease to the four
idle gear B.
Replace the gear
holder and idle gear
B.
Clean the rollers.
Apply KS64F silicon
grease to the driving
roller shaft bearings.
Replace the paper
sensor.

-b.
Replace the actuator
top.
Replace the actuator
top.
7-20
See
Repair
Section
3.3.1
3.3.3
3.3.4
3.3.5
3.4
3.11
−−−
3.3.1
3.3.3
3.3.4
3.3.5
3.4
3.3.3
3.3.4
3.3.5
3.8
3.10