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[e] Paper feed motor rotation sensor (DFMRS), transport motor rotation sensor (DTMRSA) input circuit
TLP1215(C1)
Transport motor
Constant voltage
power
rotation sensor
DTMRSA
TLP1215(C1)
Paper feed motor
Constant voltage
power
rotation sensor
DFMRS
This sensor senses rotation of the paper feed motor and the transport motor. It is composed of the photo interrupter with a built-in amplifier and the
slit disc attached to the motor shaft. Pulse signals are provided according to the motor rotation. The frequency of the pulse signal is used to detect
the motor speed. By counting the number of pulses, the motor rotation amount is
detected. Either sensor has the similar input section, and the signals are processed by the noise filter composed of R63 (R69) and C55 (C42).
[f] Tray original size detection circuit
TLP1215(C1)
CN17
Tray feed size
1
Constant voltage
VCC
power
sensor 2
2
VOUT
3
GND
DTMRSA
TLP1215(C1)
CN18
Tray feed size
Constant voltage
1
VCC
power
sensor 1
2
VOUT
3
GND
DFMRS
TLP1215(C2)
CN19
Original end
1
Constant voltage
VCC
sensor 1
power
2
VOUT
3
GND
DFMRS
This circuit is used to detect the original size on the tray. Its detecting section is included in the tray. The original width is detected with four lead
switches (DWS1 ∼ DWS4), and the original length is detected with two photo interrupters (DLS1, DLS2).
DWS1 ∼ DWS4 are contact switches which close the contacts when magnetic flux of the magnet attached to the original guide is detected. The
signals are passed in parallel through the noise filter to the CPU.
DWS1, 11 pin; DWS2, 10 pin; DWS3, 9 pin; DWS4, 8 pin
On the other hand, DLS1 and DLS2 use the photo interrupter which is integrated with the LED and the photo transistor. When there is an original,
the lever type actuator interrupts the light path. The signal is inputted through the noise filter to the G/A, then through the data path to the CPU.
DLS1, 55 pin; DLS2, 56 pin (IC13)
The original end sensor 1 (DED1) which senses the third original also uses the photo interrupter. It is inputted to the CPU. DED1, 57 pin (IC1)
+5V
DF3-8P-2DSA
1
4
VCC
CN11.4
+5V
2
5
VOUT
CN11.5
DTMRSA
3
6
GND
CN11.6
SGND
GND
Transport motor rotation sensor input circuit
CN21
+5V
DF11-28DP-2DSA
1
23
VCC
CN1.23
+5V
2
24
VOUT
CN1.24
DFMRS
3
25
GND
CN1.25
SGND
GND
Paper feed motor rotation sensor input circuit
+5 V
DF3-10P-2DS
+5V
1
CN203.1
+5V
2
CN203.2
DLS2
CN201-2
3
DWS1
CN203.3
SGND
CN201-3
DWS2
CN201-4
DWS3
GND
CN201-5
DWS4
CN201-17
CN201-8
CN201-7
CN201-9
+5 V
DF3-10P-2DS
2
CN202.2
+5V
4
CN202.4
DLS1
6
CN202.6
SGND
1
CN202.1
+5V
3
CN202.2
DED2
5
CN202.3
SGND
Lead switch PWB
GND
Tray original size detection circuit
+5V
1
R68
4.7K
CRG10G472J
2
R69
1
2
4.7K
CRG10G472J
C42
3300pF
CRM40B332K50PT
GND
+5V
1
R62
4.7K
CRG10G472J
2
R63
1
2
4.7K
CRG10G472J
C55
3300pF
CRM40B332K50PT
GND
+5 V
R 1 6
R15
R 1 7
R 1 4
2
2
DWS1
CN1-2
DWS1
3
3
DWS2
CN1-3
DWS2
4
4
DWS3
CN1-4
DWS3
5
5
DWS4
CN1-5
DWS4
17
17
+5 V
CN1-17
+5V
+5 V
+5 V
8
8
DLS1
CN1-8
DLS1
R54
7
7
DLS2
CN1-7
DLS2
9
9
DE D1
CN1-9
DED1
R59
Control PWB
– 25 –
TP49
1
49
50
S2Q
(To the paper feed motor
1
speed control circuit)
35
2
34
79
TP11
1
3
1
DFMRS
2
(To the paper feed motor
speed control circuit)
TP22 TP20
TP23 TP21
R49
R13
R48
R12
R47
R11
R46
R10
DEDAD
C5
C17
TP35
C4 C3
TP34 TP36
R45
R 5 6
R8
R 5 7
R9
R 5 5
R6
C7
C1
C6
S2B
S2Q
S2B
S2B
CPU
P32/EV3
CPU
P30/EV1
TP68
CPU
11
P50/DB0
10
P51/DB1
9
P52/DB2
8
P53/DB3
62
P43/AN3
G/A
55
P2/MP2
56
P3/MP3
57
P4/MP4
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