Toshiba e-studio281c - Drive Circuit of Main Motor

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DRIVE SYSTEM
9 - 3
9.2.2 Drive circuit of main motor
Fig. 9-2
Signal level of motor circuit
* CCW: forward rotation CW: backward rotation
• The control signal from LGC controls the operations of the main motor (M6), such as switching of
ON/OFF, a rotational direction, a rotational speed, etc. The rotational speed is decided by clock fre-
quency output at the main motor (M6). The speed is lowered to the range from 1/2 to 1/3 at the
Thick Paper / OHP Film Mode. This switching is performed between the completion of the 1st trans-
fer and that of the 2nd transfer.
Signal Level “L” Level “H” Remarks
MAMON ON OFF Main motor ON signal
MAMBK Braking Normal Main motor brake signal
MAMCW CW CCW Main motor rotational direction signal
MAMGA Low speed High speed Main motor speed switching signal
MAMCK — — Main motor reference clock signal
MAMPL Locked Unlocked Main motor PLL signal
LGC board
Main motor
MAMON
MAMBK
+24V
+5.1V
MAMCW
MAMGA
MAMCK
MAMPL
Gate array
#1