Drive Circuit Of Main Motor - Toshiba e-STUDIO281c Service Manual

9.2.2

Drive circuit of main motor

LGC board
Gate array
Signal level of motor circuit
Signal
MAMON
MAMBK
MAMCW
MAMGA
MAMCK
MAMPL
* 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.
© 2005 - 2008 TOSHIBA TEC CORPORATION All rights reserved
#1
+5.1V
Fig. 9-2
Level "L" Level "H"
ON OFF
Braking Normal
CW CCW
Low speed High speed
— —
Locked Unlocked
9 - 3
+24V
MAMON
MAMBK
MAMCW
MAMGA
MAMCK
MAMPL
Main motor
Remarks
Main motor ON signal
Main motor brake signal
Main motor rotational direction signal
Main motor speed switching signal
Main motor reference clock signal
Main motor PLL signal
e-STUDIO281c/351c/451c
DRIVE SYSTEM
9