Paper Feed Motor Drive Circuit - Olympus OEP-3 Service Manual

3. Paper feed motor drive circuit

Motor drive circuit IC610 on the SE-539 board is controlled by the control signals at pins 99 and 100 of
IC5 (CPU) on the PRT-13 board. The motor is accelerated and decelerated by PWM control.
SE-539
+24V
C620
D605 D607
47uF
10E-2FD 10E-2FD
35V
C618
0.1uF
50V
R629
R628
2.2 2.2
+24GND
IC610
STA457C
CN605 7 2
CL620
VCC2 VCC1
6P 3 1
OUT1 B1
R630
4
4.7k
B2
CL621
7P 8 6
OUT2 B3
R631
9
4.7k
B4
GND2 GND1
10 5
+24GND +24GND +24GND
+24GND
D606 D608
10E-2FD 10E-2FD
4. Tray motor drive circuit
Motor drive circuit IC607 on the SE-539 board is controlled by the control signals at pins 8 and 9 of IC5
(CPU) on the PRT-13 board. The motor is accelerated and decelerated proportionally to the reference
voltage at pin 6 of IC11 on the PRT-13 board.
SE-539
TRAY_MOTOR_BLOCK
R651
IC607
BA6219B
8 7
VCC2 VCC1
2
CN604 IN1
OUT1
CL638
5P
C630
6P CL639 CD1
0.33uF
10
OUT2 IN2
CD2
VREF
GND
1
4-28
LOAD_MOTOR_BLOCK
C646
47uF
35V
R632
2.2k
LOAD_MTR0
R633
1.8k
TP612
Q612
2SC1623-T1-L5L6
CL626
8 9
R638
4.7k
IC605 (4/7)
SN74LV04ANSR
+24GND
14
+24V
3 VCC
1Y
R634
6
2Y
2.2k
8
3Y
R635
11
TP613
1.8k
Q613
4Y
2SC1623-T1-L5L6
CL627
GND
10 11 7
R640
4.7k
IC605 (5/7)
SN74LV04ANSR
+24GND
LOAD_MTR1
+12V
2.2
C640
C637
100uF
0.1uF
16V
+12GND
5
TP618 TP620 TP622
3
6
9
4
C641
C635 0.1uF
0.1uF
+12GND
+5V
IC611 IC612
SN74LV32ANSR
SN74LV32ANSR
14
1 3 VCC 1
R665
1A 1Y 1A
47k
2 2
1B 1B
R663
4 6 4
10k
2A 2Y 2A
5 5
R664
2B 2B
10k
9 8 9
3A 3Y 3A
10 10
R666
3B 3B
47k
12 11 12
4A 4Y 4A
13 13
4B 4B
GND
7
GND
C650 C651 C652
0.001uF 0.001uF
0.001uF
PRT-13
+5V
R677
R676
10k
10k CN610 CN601
CL645
28P 3P
CL646 29P 2P
CL647 30P 1P
PRT-13
CN610 CN601
IC5
26P 5P
99P
27P 4P
100P
C619 C621
0.1uF
100uF
25V
GND
R661
10k
R662
10k
C653
0.001uF
IC5
8P
9P
IC11
6P
OEP-3 V1 (UC)