Brother LX-300 Service Manual page 169

12
Incorrect cutting in Y direction.
a. Incorrect Y-direction cutting position.
b. Defective Y-cutter.
Problem
a. Incorrect Y- Does the right cutter move
direction when the mode is changed?
cutting position
Does the left cutter move
when the Y-carriage
moves?
Right cut position is always
displaced in one direction.
Left cut position is always
displaced in one direction.
Does Y-cutter arm move
smoothly?
b. Defective Y- Is the Y-cutter unit correctly
cutter installed?
Y-cutter makes jagged
cuts?
Check Item
Y-cutter guide R and
adjustment plate
incorrectly installed.
Y-cutter arm and Y-
cutter guide incorrectly
installed.
Incorrect adjustment
of slide plates.
Incorrect adjustment
of Y-sensor unit.
Defective Y-cutter arm
movement.
Incorrectly installed Y-
cutter unit.
Defective Y-cutter
unit.
Cause Remedy
Correctly
reassemble the
body cover.
Correctly
reassemble Y-cutter
arm.
Readjust.
Readjust the Y-
sensor unit.
Apply KS64F silicon
grease to Y-cutter
arm shaft and
sensor shaft.
Correctly install the
Y-cutter unit.
Replace Y-cutter
unit.
7-19
See
Repair
Section
3.3.3
3.3.4
3.3.5
3.7
4.12
−−−
−−−
3.3.1
3.3.3
3.3.4
3.3.5
3.4
4.18