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PAPER FEEDING SYSTEM
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9.3 Drive Circuit of Tray-up Motor
The tray-up motor (brush motor) is a motor to lift or lower the tray in the upper/lower drawer.
The tray-up motor is driven by the motor driver TA8428 (LGC board: IC17).
Circuit diagram of the tray-up motor
Fig. 9-7
The motor rotates or stops by the control signals from ASIC.
• When the PA7 (CLTRM-1A) of the ASIC becomes “H” and PA6 (CLTRM-0A) becomes “L” levels,
current flows into the motor coil and the motor is rotated.
• When both of PA7 (CLTRM-1A) and PA6 (CLTRM-0A) of the ASIC become “H” level, the motor is
braked and stopped.
• When both of PA7 (CLTRM-1A) and PA6 (CLTRM-0A) of ASIC become “L” level, the motor waits for
the next command (the motor is stopped).
M
ASIC
TD62385
TA8428
PA7
1
2
3
5
Tray-up motor
LGC board
PA6
IC48
Engine-
CPU
IC22
IC24
IC17
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