Operation Of Each Part - Brother LX-200 Service Manual

5.2 Operation of Each Part

This unit is operated by three 24 V stepping motors and one DC motor (for the X-cutter
unit). The operation of each motor shown in Fig. 5.1-1 is described below.
Paper feed motor (LF Motor)
This motor is used to feed the document and film and to eject the laminated
document.
The motor is a 42 mm dia. 48-step PM stepping motor. It is set to feed the
document and tape approximately 1 mm per 16 steps using 2-2 phase drive.
Trimming motor (TC Motor)
This motor conducts trimming operation and drives the Y-cutter vertical movement.
The motor is a 42 mm dia. 48-step PM stepping motor. 480 steps complete one
trimming operation. When the direction of motor rotation is reversed, 250 steps
complete the Y-cutter up and down movements.
Y-CA motor
This motor moves the Y-carriage to the edge of the document. The Y-cutter and
paper size sensor PCB are mounted on the Y-carriage. The motor is a 42 mm dia.
24-step PM stepping motor. It is set to feed the Y-carriage approximately 1 mm per
5 steps using 2-2 phase drive.
X-cutter (DC motor)
This 24V DC motor and two cutter position detector switches are mounted on the X-
cutter. The direction of cutter movement is determined by the direction of current
flow in the DC motor.
5-3