Brother LX-300 Service Manual page 154

Problem during automatic operation.
Is document
correctly inserted?
Yes
Document width
detected correctly?
Yes
Cartridge detected
correctly?
Yes
Normal laminating
operation?
Yes
Y-cutting normal?
Yes
Correct X-cutting position?
Yes
Buzzer sounds
correctly?
Yes
END

Document cannot be correctly inserted.
No
a. Problem with input-side rollers.
b. Defective PST sensor (Photosensor) switch.
Document width cannot be detected correctly.
No
a. Defective Y-carriage (Y-CA) motor.
b. Defective Y-CA sensor (YCA-F).
c. Defective Y-cutter arm.

Cartridge size, film type cannot be detected correctly.
No
a. Defective cartridge type detector (CSIZE4) switch.
b. Defective cartridge type detector (CSIZE3) switch.

Lamination is not normal.
No
a. Defective film type (ENC) detector.
b. Defective document or film.

No cutting in Y direction.
No
a. Defective Trimmer Position Switch (SG-SW).
b. Abnormal Y-cutter vertical movement.

Incorrect cutting in Y direction.
a. Incorrect Y-direction cutting position.
b. Defective Y-cutter.

Incorrect cutting position at document front or rear
No
edge.
a. Defect in paper feed system.
b. Defect in PST sensor system.

Buzzer does not sound.
No
a. Defective buzzer circuit.
7-4
See page 7-15.
See page 7-16.
See page 7-21.
See page 7-17.
See page 7-18.
See page 7-19.
See page 7-20.
See page 7-23.