SHARP sfa58 Service Manual
SERVICE MANUAL
CODE: 00ZSFA58/SM1E
Reversing Automatic
Document Feeder
MODEL SF-A58
CONTENTS
[ 1 ] PRODUCT OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
[ 2 ] SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
[ 3 ] UNPACKING AND INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
[ 4 ] STRUCTURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
[ 5 ] OPERATIONAL DESCRIPTIONS (MECHANISM SECTION) . . . . . . . . . . . 7
[ 6 ] DISASSEMBLY, ASSEMBLY AND ADJUSTMENT . . . . . . . . . . . . . . . . . 18
[ 7 ] CONNECTOR LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
[ 8 ] REPLACEMENT PARTS AND MAINTENANCE . . . . . . . . . . . . . . . . . . . . 25
[ 9 ] TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
[10] CIRCUIT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
[11] CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
■ PARTS GUIDE
Parts marked with "!" is important for maintaining the safety of the set. Be sure to replace these parts with specified
ones for maintaining the safety and performance of the set.
This document has been published to be used
SHARP CORPORATION
for after sales service only.
The contents are subject to change without notice.
[1] PRODUCT OVERVIEW
The SF-A58 is a reversing automatic document feeder (RADF) for the
copier SF-2052. The SF-A56 is capable of automatically copying both
sides of document by inverting the document sheets up-side down,
while feeding them.
Even document sheets of different lengths and the same width may
be set in the document tray, an internal sensor in the ADF senses the
document size when the document is fed. The copier automatically
selects the proper copy paper corresponding to the document size
along with the appropriate magnification ratio.
If the appropriate copy paper, respective to the document size and
the magnification ratio, is not available, the copier stops copying and
indicates the required paper size on the display.
[Display]
• Document feed indicator: Lights when documents are set on
feed tray and indicates that RADF is
ready.
• Remove original indicator: When originals are placed manually,
the LED lights at the same time as
exposure of the last document sheet
is finished. The LED goes out when
the document feed cover is opened.
[3] UNPACKING AND
INSTALLATION
[2] SPECIFICATIONS
• Document setting direction: Face-up
• Document setting position: Center alignment
• Document transfer system: Belt drive
• Document feed sequence: Bottom take-up feeding
(Face-up discharge)
• Document size: A3 ∼ A5 (Portrait), 11" × 17" ∼
8-1/2" × 5-1/2"
• Document changing time: 0.46sec or less
(Excluding the first copy)
• Document weight: Thin paper mode; 35 ∼ 50g/m
Standard mode ; 51 ∼ 128g/m
• Max. No. of documents to be set:
50 sheets (A4, letter)
35 ∼ 80g/m2 (9 ∼ 21lb),
6.5mm thick or less
80 ∼ 128g/m2 (21 ∼ 33lb),
5mm thick or less
• Document stopper: Mechanical stopper (Duplex)
• Dimensions: SF-A56;
592 (W) × 521 (D) × 110 (H)mm
23-5/16" (W) × 20-33/64" (D) ×
4-11/32" (H)
SF-A17;
571 (W) × 521 (D) × 110 (H)mm
22-31/64" (W) × 20-33/64" (D) ×
4-11/32" (H)
• Weight: About 12kg
[Features]
• Document detection on tray (Irregular-sized documents are copied
without size recognition.)
• Recognized paper sizes: Inch series (USA/Canada):
11" × 17", 8-1/2" × 14", 8-1/2" ×
11", 8-1/2" × 11"R, 8-1/2" × 5-1/2"
Inch series (Other areas):
11" × 17", 8-1/2" × 14", 8-1/2" ×
11", 8-1/2" × 11"R, 8-1/2" × 51/2", 8-1/2" × 13"
AB series (Europe, UK):
A3, B4, A4, A4R, A5
AB series (Australia, Other areas):
A3, B4, A4, A4R, A5, 8-1/2" × 13"
Taiwan:
A3, B4, A4, A4R, B5, B5R
• Mixed document: Possible
• Document inversion: Automatic
2
2
1. Unpackin g
When unpacking, refer to the figure below.
2. Installation
– 1 –
Included parts
2. Mount the ADF onto the copier.
Remove the two cut-outs from the rear part of the upper cover of the
copier.
Cut-outs
Rear part of
upper cover
ADF tray
ADF mounting screws
(2 pcs.)
ADF securing screws
(2 pcs.)
Right cover
(1 pc.)
Tray securing screws
(2 pcs.)
Left cover
(1 pc.)
Unplug the copier and follow the procedure below.
1. Remove the document cover.
Open the document cover and lift it at a slight backward angle to
remove it.
Insert the left and right covers (included parts) into the holes from
which the document cover has been removed.
Document cover
Right cover
Install the two ADF mounting screws.
ADF mounting screws
Fit the ADF mounting screws into the holes in the hinges of the ADF
and secure the ADF with the two ADF securing screws.
ADF securing screws
Left cover
ADF mounting screw
ADF securing screw
– 2 –
3. Adjust the angle of ADF.
Loosen the two securing screws for the angle adjusting panel attached to the hinge angle and then fasten the loosened screws while
raising the angle adjusting panel completely.
NOTE:
Be sure to check that the protrusion of
the angle adjusting panel is securely
inserted into the long hole of the hinge.
Angle adjusting panel
securing screws
Long hole
Long hole
5. Connect the ADF tray connector.
Thread the M4 x 8 tray securing screws (includedparts) partway into
their holes, then connect the tray connector.
Tray connector
Tray
securing
screws
Connector on the ADF
6. Attach the ADF tray.
Loosen the two ADF tray securing screws, install the tray as shown in
the figure, and fasten the tray securing screws.
Hinge
Angle adjusting panel
NOTE: Be sure to check that the protrusion of the angle adjusting
panel is securely inserted into the long hole of the hinge.
4. Connect the ADF connector.
Remove the connector cover from the copier’s rear cover.
Next, connect the ADF connector to the connector on the copier.
Connector on the copier
ADF connector
Connector cover
Tray
securing
screws
Tray
Plug the copier into a grounded outlet and turn the
power switch on.Then, follow the procedure below.
7. Set the mode.
• Perform the following key operations on the copier to set the
mode.
C0 2
0
1
6
– 3 –
Select an adequate number
from the display of the operation
panel using the 10-key pad.
to set the
mode.
8. Adjust the center of the copy.
Set an original in the ADF tray and make a copy.
When the copy is off center as shown in Fig. 1 or Fig. 2, loosen the
two tray securing screws and adjust the tray by moving it in direction
A or B as shown in the figure.
Mark Tray securing screw
BA
• When off center as shown in fig. 1
Move the tray in direction A and secure it with the two mounting
screws.
Make a copy to check whether it is centered properly.
Fig. 1
Center of copy paper
Setup example
(1) If the leading edge of the original was not fed all the way to the
stopper, enter value which will move the original toward the stopper side.
7, 6, 5, 4...
Original
Stopper
Glass
(2) If the copy image at the leading edge was distorted, enter value
which will move the original toward the glass side.
9, 10, 11...
Original
Stopper
Glass
(3) If the original overrode the stopper, enter value which will move
the original toward the glass side.
9, 10, 11, 12 ...
Original
Stopper
Glass
Center of original image (first copy)
• When off center as shown in fig. 2
Move the tray in direction B and secure it with the two mounting
screws.
Make a copy to check whether it is centered properly.
Fig. 2
Center of original image (first copy)
Center of copy paper
9. Adjust the position of the leading edge of originals
• The position of the leading edge of originals fed from the ADF can
be determined using test command 53 .
• Although the leading edge has been factory set to stop at location
8, it may need to be adjusted depending on the type of originals.
The leading edge position can be adjusted within a range of 8 mm
(8 steps) on the stopper side and 7 mm (7 steps) on the glass side
in 1 mm increments.
Adjustment can be done separately for the one-sided, two-sided,
and thin paper modes.
0
234567
1
8
10 11 12 13 14 15
9
• After selecting test command 53 , enter a selected set value be-
tween 0 and 15 using the copier keys.
C
Set to between 0 and 15 as dictated
by the copier's performance.
The factory setting is "8".
0/
0/
1
(a)
(b)
5 3
(a)
(b)
One-sided mode
Two-sided mode
8mm
Stopper
View from the operator side
7mm
Glass
– 4 –
[4] STRUCTURE
A. External fitting
Original guide
Original feed cover
Display lamp
B. Mechanism
Original stopper
Separation
roller
A21 weight plate
Semi-circular roller
Original support
Original transport
cover
Original exit section
cover
Paper exit roller
Flapper
C. PWB distribution
Control PWB
Original reverse
sensor PWB
Original timing
sensor PWB
Reverse sensor
PWB (SF-A56 only)
LED PWB
Resist
roller
Transport belt
drive roller
Paper feed roller
Original transport belt
transport belt
follower roller
Reverse
roller
D. Motors, solenoids, and clutches
■ Motors
Code Name Type Functions and operations Contact/output
DFM Paper feed motor DC motor Drives the pickup roller, the separation roller,
DTM Transport motor Stepping motor Drives the transport belt roller.
DRM Reverse motor Stepping motor Drives the reverse roller and the paper exit roller.
DFSOL Paper feed solenoid DC solenoid Presses the paper feed section weight plate onto
DRSOL Reverse solenoid DC solenoid Drives the reverse flapper to select the paper
DTM
(Transport motor)
and the resist roller.
the original and opens/closes the shutter.
exit path or the reverse feed path.
DRM
(Reverse motor))
When this is ON, the weight
plate and the shutter fall.
When this is ON, the reverse
path is selected.
DFM
(Paper feed motor)
DRSOL
(Reverse solenoid)
DFSOL
(Paper feed solenoid)
– 5 –
E. Sensor s, swit ch es, det ect or s
DSS
(Original set sensor)
AUOD
(ADF open/close sensor)
DFMRS
(Paper feed motor
rotation sensor)
FGOD
(Paper feed
guide switch)
DWS
(Original width sensor)
DLS1
(Original length sensor 1)
DTD
(Original timing sensor)
DFD
(Original feed sensor)
DLS3
(Original length sensor 3)
TGOD
(Reverse guide switch)
DLS2
(Original length sensor 2)
RDD
(Reverse sensor)
DWVR
(Original width volume)
Code Name Type Functions and operations Contact/output
DFD Original feed sensor Reflection sensor Turns HIGH when the original lead edge
is fed just in front of the resist roller.
DTD Original timing sensor Reflection sensor Turns HIGH when the original lead edge
is transported from the paper feed section
to the vicinity of the transport belt.
RDD Reverse sensor Reflection sensor Turns HIGH when the original lead edge
is transported to the reverse/paper exit
path.
DWVR Original width volume Slide volume Original width detection on the tray
DLS1 Original length sensor 1 Photo interrupter Original length detection on the tray HIGH when the original is
DLS2 Original length sensor 2 Photo interrupter Original length detection on the tray HIGH when the original is
DLS3 Original length sensor 3 Photo interrupter Original length detection on the tray HIGH when the original is
DSS Original set sensor Photo interrupter Original detection on the tray HIGH when the original is
DFMRS Paper feed motor rotation sensor Photo interrupter Paper feed motor rotation detection Pulse output
DWS Original width sensor Photo interrupter Original width detection LOW when the original is
AUOD ADF open/close sensor Microswitch ADF unit open/close detection LOW when closed.
FGOD Paper feed guide switch Microswitch Paper feed cover open/close detection LOW when closed.
TGOD Reverse guide switch Microswitch Reverse cover open/close detection LOW when closed.
DES Paper exit sensor Photo interrupter Turns HIGH when the original lead edge
is transported to the paper exit path
HIGH when the original is
sensed.
HIGH when the original is
sensed.
HIGH when the original is
sensed.
sensed.
sensed.
sensed.
sensed.
sensed.
HIGH when the original is
sensed.
– 6 –
[5] OPERATIONAL DESCRIPTIONS
(MECHANISM SECTION)
A. Operation flowchart
The figures at right show the transport path of an original from the
original setting, through paper feed, copying, to paper exit. For details
of operations, refer to the operation process.
1) ADF mode (single copy mode) copying
START
↓
Step 01: The transport section is closed. (AUOD OFF)
↓
Step 02: An original is set on the original tray. (DSD output HIGH)
↓
Step 03: Original feed display ON
↓
Step 04: Print SW ON
↓
(Preliminary
paper feed):
↓
* A Step 05: Paper feed motor (DFM) forward rotation
↓
Step 06: Reverse motor (DRM) forward rotation (Reverse roller,
↓
Step 07: Transport motor (DTM) forward rotation
↓
For the first original, dummy paper exit is performed.
(Paper feed roller, semi-circular roller rotation)
Since the stopper is up, paper feed is not performed.
paper exit roller rotation)
(Transport belt, rotation)
* B: If there have been some originals on the tray, they
are discharged.
Original stopper
Separation
roller
A21 weight plate
Semi-circular roller
Transport belt
Resist
roller
1) Original set (2 sheets)
2) Preliminary paper feed
3) Preliminary paper feed
drive roller
Paper feed roller
Original transport belt
transport belt
follower roller
Paper exit roller
Flapper
Reverse
roller
* A Step 08: Paper feed motor (DFM) OFF
↓
Step 09: Paper feed motor (DFM) forward rotation
↓
* B Step 10: The reverse sensor (RDD) senses the lead edge of the
↓
Step 11: The original feed sensor (DFD) senses the lead edge of
↓
Step 12: Paper feed motor (DFD) OFF
↓
Step 13: Paper feed motor (DFM) reverse rotation
↓
Step 14: The original width sensor (DWS) senses the original
↓
Step 15: The original timing sensor (DTD) senses the original
↓
Step 16: Paper feed motor (DFM) OFF
↓
Paper feed solenoid (DFSOL) ON
(The weight plate and the stopper move down to press
the original onto the semi-circular roller.)
• Paper feed roller
• Semicircular roller rotation
The original feed is started.
discharged original.
(RDD output HIGH)
the original. (DFD output HIGH)
The original is stopped by the resist roller.
(Resist roller rotation)
The original lead edge is taken up by the resist roller.
width. (Output LOW)
lead edge. (DTD output HIGH)
(The original is stopped with its lead edge taken up by
the resist roller.)
* B Step 17: Reverse sensor (RDD) senses the paper exit rear edge.
↓
Step 18: Transport motor (DTM) OFF
↓
* A Step 19: Original discharge
↓
Step 20: Reverse motor (DRM) OFF
↓
(Paper feed)
↓
Step 21: Transport motor (DTM) forward rotation
↓
Step 22: Paper feed motor (DFM) reverse rotation
↓
* C Step 23: Paper feed solenoid (DFSOL) OFF
↓
Step 24: The original feed sensor (DFD) detects the original rear
↓
(RDD output LOW)
The transport belt is stopped.
(The reverse roller and the paper exit roller are stopped.)
(The transport belt rotates.)
(Resist roller rotation)
The original is sent to the transport section.
(The weight plate and the stopper move up.)
* C: If there is no original on the tray, move up the
stopper and the weight plate.
edge. (DFD output LOW)
– 7 –
Step 25: Original width sensor (DWS) output HIGH
↓
Step 26: Original timing sensor (DTD) senses the original rear
↓
Step 27: Transport motor (DTM) OFF
↓
Step 28: Copier mirror base scanning is started.
↓* D
DSS
↓
(Preliminary
paper feed)
↓
Step 29: Paper feed motor (DFM) forward rotation
↓
Step 30: The original feed sensor (DFD) senses the original lead
↓
Step 31: Paper feed motor (DFD) OFF
↓
Step 32: Paper feed motor (DFM) reverse rotation
↓
Step 33: The original width sensor (DWS) senses the original
↓
Step 34: The original timing sensor (DTD) senses the original
↓
Step 35: Paper feed motor (DFM) OFF
↓
Step 36: Copier mirror base scanning is stopped.
↓
(Paper exit)
↓
Step 37: Transport motor (DTM) forward rotation
↓
Step 38: Paper feed motor (DFM) reverse rotation
↓
* C Step 39: Paper feed solenoid (DFSOL) OFF
↓
Step 40: Paper feed sensor (DFD) senses the original rear edge.
↓
Step 42: Original width sensor (DWS) output HIGH
↓
edge. (DFD output LOW)
Paper feed motor (DFM) OFF
(The resist roller is stopped.)
(Transport belt, stops.)
Original stop
LOW (No original on the tray) → After completion of
scanning, go to step 61.
HIGH (There are some originals on the tray.)
↓
(Paper feed roller, semi-circular roller rotation)
The original feed is started.
edge. (DFD output HIGH)
The original is stopped by the resist roller.
(Resist roller rotation)
The original lead edge is taken up by the resist roller.
width.
(Output HIGH)
lead edge. (DTD output HIGH)
(The original is stopped with its lead edge taken up by
the resist roller.)
(Transport belt, rotation)
Reverse motor (DRM) rotation
Reverse roller, paper exit roller rotation
The original discharge is started.
(Resist roller rotation)
The original is sent to the transport section.
(The weight plate and the stopper move up.)
* C When there is no original on the tray, move up the
stopper and the weight plate.)
(DFD output LOW)
Original stopper
Separation
roller
Resist
roller
4) Paper feed
5) Original set (The third copy)
6) Preliminary paper feed
7) Preliminary paper feed
8) Paper exit feed
9) Paper exit feed
Step 43: Original timing sensor (DTD) senses the original rear
A21 weight plate
Semi-circular roller
Transport belt
drive roller
Paper feed roller
↓
edge. (DTD output LOW)
Paper feed motor (DFM) OFF
(Resist roller stop)
Paper exit roller
Original transport belt
transport belt
follower roller
Flapper
Reverse
roller
– 8 –
Step 44: Transport motor (DTM) OFF
↓
Step 45: Copier mirror base scanning is started.
* E ↓
DSS
↓
(Follows the preliminary
paper feed and the paper
exit procedures.)
↓
Step 46: Paper feed motor (DFM) forward rotation
↓
Step 47: Paper feed sensor (DFD) detects the original lead edge.
↓
Step 48: Paper feed motor (DFM) OFF
↓
Step 49: Paper feed motor reverse rotation
↓
Step 50: Reverse sensor (RDD) senses the discharged original
↓
Step 51: Original width sensor (DWS) senses the original width.
↓
Step 52: Original timing sensor (DTD) senses the original lead
↓
Step 53: Paper feed motor (DFM) OFF
↓
Step 54: (Original exit)
↓
Step 55: Reverse motor (DRM) OFF
↓
Step 56: Copier mirror base scan stop
→
(Paper exit process,
continued)
Step 57: Reverse sensor (RDD) senses the discharged original
↓
Step 58: (Original exit)
↓
Step 59: Reverse motor (DRM) OFF
↓
Step 60: Copier mirror base scan stop
→
(Paper exit)
Step 61: Transport motor (DTM) forward rotation
↓
(Transport belt, paper exit roller stop)
Original stop
LOW (There are no originals on the tray.)
→ Go to step 57 (Follows the paper exit procedure).
HIGH (Some original on the tray)
↓
(Paper feed roller, semicircular roller rotation)
(The original feed is started.)
(DFD output HIGH)
(The original is stopped by the resist roller.)
Resist roller rotation)
(The original lead edge is taken by the resist roller.)
lead edge. (RDD output LOW)
Reverse motor (DRM) rotation down
(Output LOW)
edge. (DTD output HIGH)
(The original lead edge is taken by the resist roller and
stopped.)
To Step 37.
rear edge. (RDD output LOW)
(Reverse roller, paper exit roller stop)
To Step 61: (Paper exit)
(Transport belt rotation)
Reverse motor (DRM) forward rotation
(Reverse roller, paper exit roller rotation)
(The original exit is started.)
Original stopper
Separation
roller
A21 weight plate
Semi-circular roller
Paper exit roller
Flapper
Transport belt
Resist
roller
10) Original set (the second copy)
11) Paper exit complete
12) Paper exit (The second original)
13) Paper exit complete
Step 62: Reverse sensor (RDD) senses the discharged original
Step 63: Reverse sensor (RDD) senses the discharged original
Step 64: (Original exit)
Step 65: Reverse motor (DRM) OFF
END
drive roller
Paper feed roller
↓
↓
↓
↓
lead edge. (RDD output HIGH)
rear edge. (RDD output LOW)
Transport motor (DTM) OFF
(Transport belt stop)
Reverse motor (DRM) rotation down)
(Reverse roller, paper exit roller stop)
Original transport belt
transport belt
follower roller
Reverse
roller
Note: * A: For the first original, the preliminary paper feed opera-
tion is performed.
* B: If there is an original in the original table from the begin-
ning, the original is discharged.
* C: If there is no original on the original tray, the wait plate
and the stopper are raised.
* D: If there is no original on the original tray, the original set
sensor (DSS) output becomes LOW.
– 9 –
2) RADF mode (duplex copy mode) copying
START
↓
Step 01: The transport section is closed. (AUOD ON)
↓
Step 02: An original is set on the original tray. (DSS output HIGH)
↓
Step 03: Original feed display ON
↓
Step 04: Print SW ON
↓
(Preliminary
paper feed):
↓
* A Step 05: Paper feed motor (DFM) forward rotation
↓
Step 06: Reverse motor (DRM) forward rotation
↓
Step 07: Transport motor (DTM) rotation
↓
* A Step 08: Paper feed motor (DFM) OFF
↓
Step 09: Paper feed motor (DFM) forward rotation
↓
* B Step 10: Reverse sensor (RDD) senses the lead edge of the
↓
Step 11: Original feed sensor (DFD) senses the lead edge of the
↓
Step 12: Paper feed motor (DFM) OFF
↓
Step 13: Paper feed motor (DFM) reverse rotation
↓
Step 14: Original width sensor (DWS) senses the original width.
↓
Step 15: Original timing sensor (DTD) senses the lead edge of
↓
Step 16: Paper feed motor (DFM) OFF
↓
* B Step 17: Reverse sensor (RDD) senses the rear edge of the
↓
Step 18: Transport motor (DTM) OFF
↓
* A: For the first original, dummy paper exit is
performed.
(Paper feed roller, semi-circular roller rotation)
Since the stopper is up, paper feed is not performed.
(Reverse roller, paper exit roller rotation)
(Transport belt rotation)
* B: If there has been an original on the tray, is
discharged.
Paper feed solenoid (DFSOL) ON
(The weight plate and the stopper move down to press
the original onto the semi-circular roller.)
(Paper feed roller, semi-circular roller rotation)
The original feed is started.
discharged original.
(RDD output HIGH)
discharged original. (DFD output HIGH)
The original is stopped by the resist roller.
(Resist roller rotation)
The lead edge of the original is taken up by the resist
roller.)
(Output LOW)
the original. (DTD output HIGH)
(The original is stopped with its lead edge taken up by
the resist roller.)
discharged original. (RDD output LOW)
Reverse motor (DRM) rpm down
(Transport stop)
Original stopper
Separation
roller
Resist
roller
1) Original set ((2 sheets)
2) Preliminary paper feed
3) Preliminary paper feed
* B Step 19: Original discharge
Step 20: Reverse motor (DRM) OFF
(Preliminary
paper feed):
Step 21: Transport motor (DTM) forward rotation
Step 22: Paper feed motor (DFM) reverse rotation
* C Step 23: Paper feed solenoid (DFSOL) OFF
A21 weight plate
Semi-circular roller
Transport belt
drive roller
Paper feed roller
↓
↓
↓
↓
↓
↓
(Reverse roller, paper exit roller stop)
(Paper feed reverse)
Transport motor, reverse motor (DRM) forward rotation
(Reverse roller, paper exit roller rotation)
(Resist roller rotation)
The original is sent to the transport section.
(The weight plate and the stopper move up.)
* C: If there is no original on the original tray, move up
Original transport belt
transport belt
follower roller
the stopper and the weight plate.
Paper exit roller
Flapper
Reverse
roller
– 10 –
Step 24: Original feed sensor (DFD)
↓
Step 25: Original width sensor (DWS) output HIGH
↓
Step 26: Original timing sensor (DTD) senses the rear edge of the
↓
Step 27: Reverse sensor (RDD) senses the lead edge of the
↓
Step 28: The lead edge of the original is moved counterclockwise
↓
Step 29: Transport motor (DTM) OFF
↓
Step 30: Reverse motor (RDM) OFF
↓
Step 31: Transport motor (DTM) OFF
↓
Step 32: Reverse motor (DRM) forward rotation
↓
Step 33: Reverse sensor (RDD) senses the rear edge of the
↓
Step 34: Reverse motor (DRM) OFF
↓
Step 35: Transport motor (DTM) OFF
↓
Step 36: Original stop
↓
Step 37: Copier mirror base scanning is started.
* D ↓
DSS output
↓
(Preliminary
paper feed)
↓
Step 38: Paper feed motor (DFM) forward rotation
↓
Step 39: Original feed sensor (DFD) senses the lead edge of the
↓
Step 40: Paper feed motor (DFM) OFF
↓
Step 41: Paper feed motor (DFM) forward rotation
↓
Step 42: Original width sensor (DWS) senses the original width.
↓
Step 43: Original timing sensor (DTD) senses the lead edge of
↓
Senses the rear edge of the discharged original. (DFD
output LOW)
original.
(DTD output LOW)
Paper feed motor (DFM) OFF (Resist roller stop)
Reverse solenoid (DRSOL) ON (The flapper moves up.)
original. (RDD output HIGH)
by the flapper.
(Transport belt stop)
(Reverse roller, paper exit roller stop)
(Transport belt rotation)
(Reverse roller, paper exit roller rotation)
The original is transported to the paper feed section.
reverse original.
(RDD output LOW)
(Reverse roller, paper exit roller stop)
(Transport belt stop)
Reverse solenoid (DRSOL) OFF
(The flapper moves down.)
LOW (There is no original on the tray.) → After
completion of mirror base scanning, go to step 46.
(Reverse rotation)
HIGH (There is an original on the tray)
↓
(Paper feed roller, semi-circular roller rotation)
The original feed is started.
original.
(DFD output HIGH)
The original is stopped by the resist roller.
(Resist roller rotation)
The lead edge of the original is taken up by the resist
roller.
(Output LOW)
the original. (DTD output HIGH)
Original stopper
Separation
roller
Resist
roller
4) Paper feed reverse
5) Paper feed reverse (Reverse)
6) Paper feed reverse (Reverse transport)
7) Original set (Back copy of the first original)
8) Preliminary paper feed
A21 weight plate
Semi-circular roller
Transport belt
drive roller
Paper feed roller
Original transport belt
Paper exit roller
transport belt
follower roller
Flapper
Reverse
roller
– 11 –
Step 44: Paper feed motor (DFM) OFF
↓
Step 45: Copier mirror base scanning stop
↓
(Reverse
rotation)
↓
Step 46: Reverse solenoid (DRSOL) ON
↓
Step 47: Transport motor (DTM) forward rotation
↓
Step 48: Reverse sensor (RDD) senses the lead edge of the
↓
Step 49: The lead edge of the original is moved counterclockwise
↓
Step 50: Transport motor (DTM) OFF
↓
Step 51: Reverse motor (DRM) OFF
↓
Step 52: Transport motor (DRM) reverse rotation
↓
Step 53: Reverse motor (DRM) reverse rotation
↓
Step 54: Reverse sensor (RDD) senses the rear edge of the
↓
Step 55: Reverse motor (DRM) OFF
↓
Step 56: Transport motor (DTM) OFF
↓
Step 57: Reverse solenoid (DRSOL) OFF
↓
Step 58: Copier mirror base scanning start
↓
Step 59: Copier mirror base scanning stop
* E ↓
First-out
original
↓
(Paper exit
paper feed
reverse)
↓
Step 60: Transport motor (DTM) forward rotation
↓
Step 61: Paper feed motor (DFM) reverse rotation (Resist roller
↓
(The original is stopped with its lead edge taken up by
the resist roller.)
(The flapper moves up.)
(Transport motor rotation)
Reverse motor (DRM) forward rotation
(Rreverse roller, paper exit roller rotation)
original.
(RDD output HIGH)
by the flapper.
(Transport belt stop)
(Reverse roller, paper exit roller stop)
(Transport belt rotation)
(Reverse roller, paper exit roller rotation)
The original is transported to the paper feed section.
reversed original.
(RDD output LOW)
(Reverse roller, paper exit roller stop)
(Transport belt stop)
Original stop
(The flapper moves down)
NONE → After completion of mirror base scanning, go
to step 84.
YES
↓
(Transport belt rotation)
Reverse motor (DRM) forward rotation
Reverse roller, paper exit roller rotation)
The original is discharged.
rotation)
The original is sent to the transport section.
Original stopper
Separation
roller
Resist
roller
9) Preliminary paper feed
10) Reverse
11) Reverse
12) Reverse (Reverse transport)
13) Original set (Front copy of the first original)
14) Paper exit reverse
A21 weight plate
Semi-circular roller
Transport belt
drive roller
Paper feed roller
Original transport belt
Paper exit roller
transport belt
follower roller
Flapper
Reverse
roller
– 12 –
* C Step 62: Paper feed solenoid (DFSOL) OFF
↓
Step 63: Original feed sensor (DFD) senses the rear edge of the
↓
Step 64: Original width sensor (DWS) output LOW
↓
Step 65: Original timing sensor (DTD) senses the rear edge of the
↓
Step 66: Reverse sensor (RDD) senses the lead edge of the
↓
Step 67: Reverse sensor (RDD) senses the discharged original
↓
Step 68: Transport motor (DTM) OFF
↓
Step 69: (Original exit)
↓
Step 70: Reverse motor (DRM) OFF
↓
Step 71: Reverse solenoid (DRSOL) ON
↓
Step 72: Transport motor (DTM) forward rotation
↓
Step 73: Reverse sensor (RDD) senses the lead edge of the
↓
Step 74: The lead edge of the original is moved counterclockwise
↓
Step 75: Transport motor (DTM) OFF
↓
Step 76: Reverse motor (DRM) OFF
↓
Step 77: Transport motor (DTM) reverse rotation
↓
Step 78: Reverse motor (DRM) forward rotation
↓
Step 79: Reverse sensor (RDD) senses the rear edge of the
↓
Step 80: Reverse motor (DRM) OFF
↓
Step 81: Transport motor (DTM) off
↓
Step 82: Reverse solenoid (DRSOL) OFF
↓
(The weight plate and the stopper moves up.)
* C: When there is no original on the tray, move up the
stopper and the weight plate.
original.
(DFD output LOW)
original. (DTD output LOW)
discharged original.
(RDD output HIGH)
rear edge. (RDD output LOW)
(Transport belt stop)
(The original is stopped in the transport section.)
(Reverse roller, paper exit roller stop)
(The flapper moves up.)
(Transport belt rotation)
Reverse motor (DRM) forward rotation
(Reverse roller, paper exit roller rotation)
original.
(RDD) output HIGH)
by the flapper.
(Transport belt stop)
(Reverse roller, paper exit roller stop)
(Transport belt rotation)
(Reverse roller, paper exit roller stop)
The original is sent to the paper feed section.
reverse original. (RDD output LOW)
Reverse roller, paper exit roller stop
(Transport belt stop)
Original stop
(The flapper moves down.)
Original stopper
Separation
roller
Resist
roller
15) Paper exit reverse (Paper exit of the first original iscompleted)
16) Paper exit reverse (Reverse)
17) Paper exit reverse (Reverse)
18) Paper exit reverse (Reverse transport)
19) Original set (Back copy of the second original)
20) Reverse
A21 weight plate
Semi-circular roller
Transport belt
drive roller
Paper feed roller
Paper exit roller
Original transport belt
transport belt
follower roller
Flapper
Reverse
roller
– 13 –
Step 83: Copier mirror base scanning start
↓* D
DSS output
→
(Paper exit)
↓
Step 84: Transport motor (DTM) forward rotation
↓
Step 85: Reverse sensor (RDD) senses the lead edge of the
↓
Step 86: Reverse sensor (RDD) senses the rear edge of the
↓
Step 87: Original discharge
↓
Step 88: Reverse motor (DRM) OFF
↓
END
LOW (No original on the tray) → After completion of
mirror base scanning, go to step 46 (reverse).
HIGH (There is an original on the tray.)
↓
Go to step 38 (Preliminary paper feed).
(Transport belt rotation)
Reverse motor (DRM) forward rotation
(Reverse roller, paper exit roller rotation)
The original is discharged.
discharged original.
(RDD output HIGH)
discharged original.
(RDD output LOW)
Transport motor (DTM) OFF
(Transport belt stop)
Reverse motor (DRM) rpm down
(Reverse roller, paper exit roller stop)
Note: * A: For the first original, the preliminary paper feed opera-
tion is performed.
* B: When there is an original on the original tray in ad-
vance, it is discharged.
* C: When there is no original on the original tray, move up
the weight plate and the stopper.
* D: When there is no original on the original tray, the
original set sensor (DSS) output becomes LOW.
* E: It depends on whether there is any preliminary fed
original in step 38 ∼ step 44.
Original stopper
Separation
roller
Resist
roller
21) Reverse
22) Reverse (Reverse transport)
23) Original set (Front copy of the second original)
24) Paper exit
A21 weight plate
Semi-circular roller
Transport belt
drive roller
Paper feed roller
Original transport belt
Paper exit roller
transport belt
follower roller
Flapper
Reverse
roller
25) Paper exit complete
– 14 –
Loading...