Drive Circuit Of Tray-Up Motor - Toshiba e-STUDIO200L/230/280 SERIES Service Manual

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
Engine-
CPU
IC22
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).
June 2004 © TOSHIBA TEC
ASIC
TD62385
PA7
IC24
IC48
PA6
Fig.9-7
9 - 11
LGC board
1 3
TA8428
M
Tray-up motor
2 5
IC17
e-STUDIO200L/230/280 PAPER FEEDING SYSTEM
9