Sharp AR-D17-19 (serv.man2) Service Manual ▷ View online
AR-D17/D18/D19 MACHINE OPERATIONS 4 - 1
[4] MACHINE OPERATIONS
1. Cassette operation
• When a cassette is inserted, DLM1 (lift-up motor) rotates to lift up the cassette plate.
• If the tray is ready to feed paper (DLUD1 is ON and DPED is ON), after reception of the JOB start, paper is fed to DPPD1 by the desk motor (DM),
the transport clutch (DTRC), the paper feed clutch (DPFC1), the pickup solenoid (DPFS1), and the cassette paper feed unit.
A. Lift operation
When a cassette is inserted, the lift-up motor is turned on to lift the
rotating plate, and is stopped at the paper feed position. (Upper limit
sensor: ON position of DLUD)
rotating plate, and is stopped at the paper feed position. (Upper limit
sensor: ON position of DLUD)
The lift-up motor output is as shown below:
B. Paper feed operation
If the tray is in the paper feed ready position (upper limit sensor: at ON
position of DLUD) and there is some paper in the tray, paper feed can
be performed.
position of DLUD) and there is some paper in the tray, paper feed can
be performed.
Paper feed is performed by the transport motor (DM), the transport
clutch (DTRC), and paper feed clutch (DPFC), and the paper feed
solenoid (DPFS) at the following timing.
clutch (DTRC), and paper feed clutch (DPFC), and the paper feed
solenoid (DPFS) at the following timing.
CN-E (14pin)
14
15
/DLUD1
NC.
16
GND
9
10
/DLUD1
DCSPS1
11
12
+24V
DPED1
13
+5V
4
5
DCSS12
DLM1B
6
7
DCSS13
DML1B
8
DCSS14
1
2
/DPFS1
DCSS11
3
/DPFC1
14
GND
9
10
+5V
GND
11
12
+24V
GND
13
+24V
4
5
/DDPOD
/DTRC
6
7
/DMEN
/DMCK
8
/DMLOK
1
2
/DPPD1
/DPPD2
3
/DPPD3
16 14
/DLUD3
DPED3
12
DCSPS3
22 20
DLM2B
/DPFC3
18
/DPFS3
10 8
/DLUD3
DCSS34
6
4
DCSS32
DCSS24
2
DCSS22
15 13
/DLUD2
DPED2
11
DCSPS2
21 19
DLM2A
/DPFC2
17
/DPFS2
24
+24V
30 28
GND
GND
26
+24V
23
DLM3A
29 27
+5V
+5V
25
DLM3B
9
7
/DLUD2
DCSS33
5
3
DCSS31
DCSS23
1
DCSS21
CN-C (30pin)
AR-D18/D19
AR-D17
CN-D (16pin)
Desk control PWB
1
2
3
GND
/DPPD1
+5V
1
2
3
4
5
+24V
GND
/DMEN
/DMLOK
/DMCK
1
2
+24V
/DTRC
DLM1
PFD PWB
DPPD1
DPED1
DLUD1
DM
DTRC
DCSPS1
DCSS11
DCSS12
DCSS12
DCSS13
DCSS14
DCSS14
CNA (16pin)
(6pin)
Cassette plate
Lift-up unit
DPFS1
DPFC1
Cassette paper feed unit
DLUMA
(Motor output)
(Motor output)
(Upper limit sensor)
DLUMB
DLUD
12ms
2ms
8ms
2ms
12ms
JOB start reception
JOB end reception
Preliminary paper
feed request reception
feed request reception
Acceleration
DMM
Speed
reduction
reduction
Speed
reduction
reduction
(Transport motor output)
DTRC
(Transport clutch)
DPFC1
(Paper feed clutch)
DPFS1
(Paper feed solenoid)
DPPD1
(Transport sensor)
TRC
(Machine TRC sync signal)
AR-D17/D18/D19 MACHINE OPERATIONS 4 - 2
2. Desk operation
A. Paper feed from the upper-stage cassette
B. paper feed from the mid-stage cassette or the
lower-stage cassette
Similarly in paper feed from the mid-stage cassette or the lower-stage
cassette, the transport motor speed is accelerated when the transport
sensor (DPPD1) is off, and the transport motor speed is reduced in the
proper timing when the DPPD1 is on with the next paper.
cassette, the transport motor speed is accelerated when the transport
sensor (DPPD1) is off, and the transport motor speed is reduced in the
proper timing when the DPPD1 is on with the next paper.
C. Paper empty detection
When the rotating late moves up and stops at the paper feed ready
position and in the paper feed operation, paper empty in the tray is
detected by the paper empty sensor (DPED).
position and in the paper feed operation, paper empty in the tray is
detected by the paper empty sensor (DPED).
1) The first paper feed starts.
Transports paper at a high speed.
Transports paper at a high speed.
2) When the transport sensor (DPPD1)
is on, the transport speed is reduced
to the process speed before reaching
the transport roller of the machine.
is on, the transport speed is reduced
to the process speed before reaching
the transport roller of the machine.
3) The second paper feed starts.
As the first paper still stays between
the desk and the machine, the
second paper is transported at the
process speed.
As the first paper still stays between
the desk and the machine, the
second paper is transported at the
process speed.
Speed reduction to the process
speed must be completed
before reaching the transport
roller of the machine.
speed must be completed
before reaching the transport
roller of the machine.
DPPD1 on
Transport speed
(Process speed)
(Process speed)
Transport speed
(Process speed)
(Process speed)
Transport speed
(High speed)
4) When the transport sensor (DPPD1)
is off, the transport motor speed is
accelerated to transport the second
paper at a high speed.
is off, the transport motor speed is
accelerated to transport the second
paper at a high speed.
5) When the transport sensor (DPPD1)
is on, the distance from the previous
paper is sensed.
is on, the distance from the previous
paper is sensed.
6) The timing of reducing speed is varied
according to the distance from the
previous paper to adjust the distance.
However, speed reduction must be
completed before reaching the machine roller.
according to the distance from the
previous paper to adjust the distance.
However, speed reduction must be
completed before reaching the machine roller.
Distance
between paper
between paper
Speed reduction to the process
speed must be completed
before reaching the transport
roller of the machine.
speed must be completed
before reaching the transport
roller of the machine.
DPPD1 off
Pull out the machine.
(Process speed)
Transport speed
(Process speed)
(Process speed)
Transport speed
(High speed)
Transport
speed
(High speed)
DPPD1 on
Repeat 3) to 6).
AR-D17/D18/D19 MACHINE OPERATIONS 4 - 3
3. ADU operation
During duplex operation, after one side is finished, the paper is dis-
charged from the fuser unit and, due to the switching of the gate, sent
through the decurler unit (AR-RB1) and transported to the ADU unit.
charged from the fuser unit and, due to the switching of the gate, sent
through the decurler unit (AR-RB1) and transported to the ADU unit.
The paper is reversed by the reverse roller in PB1 and aligned in the
ADU, and transported to the transport section for copying on the sec-
ond side.
ADU, and transported to the transport section for copying on the sec-
ond side.
A. Initial operation
When the machine power is turned on, or when the ADU is detached,
the alignment plate of the ADU is initialized (moved to the home posi-
tion).
the alignment plate of the ADU is initialized (moved to the home posi-
tion).
When initialization is made with the home position sensor at the OFF
state, the alignment motor is rotated to the home position at initializing
start. When the home position sensor is turned on, the alignment motor
is stopped to terminate initialization.
state, the alignment motor is rotated to the home position at initializing
start. When the home position sensor is turned on, the alignment motor
is stopped to terminate initialization.
When initialization is made with the home position sensor at the ON
state, the alignment motor is rotated in the regulating direction at initial-
izing start, and the motor is stopped with the home position sensor at
the OFF state.
state, the alignment motor is rotated in the regulating direction at initial-
izing start, and the motor is stopped with the home position sensor at
the OFF state.
Then the alignment motor is rotated to the home position. When the
home position sensor is turned on, it is stopped to terminate initializa-
tion.
home position sensor is turned on, it is stopped to terminate initializa-
tion.
19 20
AP
AM/A
+24V
-ADU(OUT)
21 22
AP
AMB
+24V
-ADU(OUT)
23 24
AP
AM/B
/A
TRC
14 15
+24V
-ADU(OUT)
A
TM/B
16 17
+24V
-ADU(OUT)
AP
AMA
18
+24V
-ADU(OUT)
9 10
A
TMA
+24V
11 12
A
TM/A
+24V
-ADU(N)
13
A
TMB
4
5
/ADUDSET
APHPS
6
7
GND
GND
8
GND
1
2
/APPD1
+5V
3
/APPD2
CN-F (24pin)
Desk control PWB
Drawer connector (24pin)
CN-A (11pin)
CN-B (3pin)
Relay PWB
1
2
5
6
3
4
6
5
2
1
4
3
ATMA/
+24V
+24V
ATMB/
ATMA
ATMB
6
5
2
1
4
3
APAMA/
+24V
+24V
APAMB/
APAMA
APAMB
2
1
3
APPD1
GND
+5V
2
1
/ATRC
+24V
2
3
1
APHPS
+5V
GND
2
3
1
APPD2
+5V
GND
ATM
APPD1
APPD2
APAM
APHPS
ATRC
alignment
plate
plate
alignment
plate
plate
Idle roller
ADU roller
AR-D17/D18/D19 MACHINE OPERATIONS 4 - 4
B. Paper feed operation
(When two sheets of single-face documents of A4, LT, or smaller size are duplex-printed 6 copies.)
Cassette feed paper
ADU feed paper
(1)
(2)
(3)
(4)
(5)
(6)
Alignment
(7)
(8)
Alignment
(9)
(10)
(11)
(12)
Reverse
paper
exit
paper
exit
(17)
(18)
(19)
(20)
(21)
(22)
(23)
Reverse
paper
exit
paper
exit
Reverse
paper
exit
paper
exit
Reverse
paper
exit
paper
exit
(13)
(14)
(15)
(16)
Alignment
Alignment
Alignment
Reverse
paper
exit
paper
exit
Reverse
paper
exit
paper
exit
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