Brother LX-300 Service Manual page 153

Is trimming normal?
Yes
Is X-cutter operation
normal?
Yes
Is automatic
operation normal?
Yes
END
No
No
No
7-3

Abnormal trimming.
a. Defective trimming (TR-I) switch.
b. Defective trimming (SG) motor.
c. Defective trimming (TR-G) switch
d. Defective T-cutter.

Nothing happens when switches are pressed
(LED indicators do not light).
a. Defective switch or push switch on the
Switch PCB.
b. Defective LED on the Switch PCB.

Abnormal X-cutter operation.
a. Defective X-cutter position switch.
b. Defective X-cutter DC motor.
c. Defective X-cutter.

Nothing happens when switches are pressed
(LED indicators do not light).
a. Defective switch or push switch on the
Switch PCB.
b. Defective LED on the Switch PCB.
Problem during automatic operation.
See page 7-12.
See page 7-6.
See page 7-14.
See page 7-6.