Toshiba e-STUDIO555 Service Manual page 330

[D] Original exit motor control circuit
This circuit controls the rotation/stoppage and the direction of rotation, excitation mode and motor
current of the original exit motor. The speed and direction of the motor rotation can be controlled by
inputting the drive clock signal (EMOT-CLK) and rotation direction signal (EMOT-CW). When the level
of the enabling signal (EMOT-ENB) is set to "L", the motor current is turned OFF regardless of the state
of other signals. Either the 1-2 phase excitation or W1-2 phase excitation can be selected by the
excitation switching signal (EMOT-MD1). The edge switching signal (EMOT-MD2) is used to specify the
switching timing for excitation phase either from when both the rising and decay edge of the CLK input
are detected or when only the rising edge is detected. The motor current value can be set discretionary
by changing the level of the reference setting signal (EMOT-REF).
[E] Original pickup solenoid control circuit
The pickup solenoid is a two-way solenoid that can be operated both in suction and recovery, and
driven by two transistors (Q14 and Q15) for each operation respectively. When the level of the PUSOL-
ON signal is set to "L", Q14 is turned ON, the power of 24V is applied to the coil for suction operation,
the solenoid is turned ON, and then the pickup roller goes down. When the level of the PUSOL-ON
signal is set to "L", Q15 is turned ON, the power of 24V is applied to the coil for recovery operation, the
solenoid is turned OFF, and then the pickup roller goes up.
e-STUDIO555/655/755/855
REVERSING AUTOMATIC DOCUMENT FEEDER (RADF)
Fig. 15-8
Fig. 15-9
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