Exit Motor Control Circuit - Toshiba e-STUDIO2330C Service Manual

16.5.3

Exit motor control circuit

The exit motor is a stepping motor driven by the control signal output from the engine CPU and ASIC
on the LGC board and rotates the exit roller.
The exit motor is driven by the pulse signal (EXTMA, EXTMB, EXTMC, EXTMD) output from the motor
driver. These pulse signals are formed based on the reference clock (EXMCK) and output only when
the enable signal (EXMEN) is a high level. Also, the rotation speed or direction of the motor can be
switched by changing the output timing of each pulse signal.
LGC board
EXMCK
IC49
EXMEN
Engine CPU
EXMCW
IC48
STMRST
ASIC
Signal
EXMCK Reference clock
EXMEN Enable signal
EXMCW Rotation direction signal
STMRST Reset signal
* CW: Clockwise rotation, CCW: Counter clockwise rotation viewing from the axis
e-STUDIO2330C/2820C/2830C/3520C/3530C/4520C
FUSER UNIT / PAPER EXIT SECTION
+5.1VB
IC37
Motor driver
IC25
SG
Fig. 16-7
Function
16 - 16
+24VD2 +24VD2
EXTMA
EXTMB
IC23
EXTMC
EXTMD
PG
Status
High level
---
ON
CCW
Normal operation
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Exit motor
Low level
---
OFF
CW
Reset