Canon CLC5000 Información técnica Pagina 256

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CHAPTER 2 NEW FUNCTIONS
COPYRIGHT
©
2001 CANON INC. 2000 2000 2000 2000 CANON CLC5000 REV.0 JAN. 2001
9.3.3 Controlling the Buffer Pass Motor
a.Outline
The buffer pass motor (M1, M3) is a 4-phase stepping motor.
It is turned on/off or its speed of rotation is changed by controlling the rest signal
(RESETB) and the output timing of the pulse signals A, A
*
, B, and B
*
b. Operations
The following five types of signals are sent by the host copier to the buffer pass driver
PCB to control the buffer pass motor (M1, M3):
Reset signal (RESETB)
Mode check signal (MODECH1, 2)
Motor rotation speed signal (CLK)
Vertical path switching signal (VLCNG)
Motor rotation enable signal (ENB)
In response to these five types of signals, the motor clock generation circuit determines
the speed of rotation, and sends control signals to the motor driver PCB.
In turn, the motor drive PCB then drives the buffer pass motor according to the control
signal it receives.
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