Mechanical Operations - Muratec MFX-2500 Field Engineering Manual

6.7.1.6 Mechanical Operations

6.7.1.6.1 Switchback Mechanism
(1) Switchback Operation
The Paper Exit Roller reverses the direction of feeding the 1-sided copy into the Duplex Unit (switchback
operation). This switchback operation by the Paper Exit Roller is accomplished by changing the direction
of rotation of the Switchback Motor whose drive is transmitted via a gear train. When the motor is turned
forward, the paper is fed out of the machine. When the motor is turned backward, the paper is fed into the
Duplex Unit.
Feeding the paper into duplex unit
(2) Paper Exit Roller Drive Coupling Mechanism
When the Duplex Unit is mounted, the tip of the Duplex Unit Lever raises the Idle Lever to disconnect the
drive from the machine (Fusing Roller) and, instead, provides the Paper Exit Roller with the drive from the
Switchback Motor.
Paper exit roller
(3) Switchback Motor Control
The Switchback Motor is a two-phase stepping motor. Its direction of rotation and speed are controlled by
applying pulse signals output from pins 1 to 4 of PJ3A to the motor.
Paper exit sensor PC3
Paper exit roller
Duplex unit lever
6-78
Idle lever
Switchback
motor M1