Toshiba 4560 Service Manual page 62

Note: Main motor and transport motor control signals
Signal
Control signal
CW/CCW
MOT-ON signal
6.4.2 Control signals
(1) CW/CCW signal (LGC
Switches the rotation direction of motor.
When this signal becomes "L" level, the main motor rotates counterclockwise as viewed from the
rear side, and drives the developer unit, drum, heat roller, etc.
When this signal is "H" level, the transport motor rotates clockwise as viewed from the rear side,
and drives the transport-roller.
(2) PLL-OK signal (MOT
When the cycle of FG pulse deviation from the reference frequency is within fixed range, this state
is specified as lock range (normal rotation), and this PLL-OK signal becomes "L" level. Also, at this
time, the LED "ED1" light comes ON.
(3) F-MOT-REF signal (LGC
This signal is a reference clock signal for the motor to rotate at a fixed speed.
(4) MOT-FG signal
Generates the FG signal during motor rotation
(5) MOT-BRK signal (LGC
When it becomes "L" level, the motor rotation is broken down.
(6) MOT-ON signal (LGC
This signal is motor ON/OFF control signal.
When it becomes "L" level, the main motor rotates.
When it becomes "H" level, the transport motor rotates.
Signal level of motor circuit
Signal names and connector
J43
Main motor
MAIN-CW/CCW
MAINMOT-ON
* The signal names indicate a level in the connector J43, respectively.
Nov. 1997 © TOSHIBA
Main motor
M1
MAIN-CW/CCW
MAIN MOT-ON
MOT: Input)
LGC: Output)
MOT: Input)
MOT: Input)
MOT: Input)
J549
Transport motor
FEED-CW/CCW
PLL-OK
F-MOT-REF
MOT-FG
MOT-BRK
FEEDMTR-ON
Transport motor
M16
FEED-CW/CCW
FEED MTR-ON
"H" level
CW direction
Defective control
Reference clock
Rotation pulse signal
Brake OFF
Main motor OFF
Transport motor ON Transport motor OFF
6 - 7
"L" level
CCW direction
Normal
Brake ON
Main motor ON
4560/4570 DRIVE