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 –
B. Original size detection
The original size is detected in three ways of different purposes.
1) Original size detection by the original set tray
The original size detection by the original set tray is used in automatic
paper size and automatic magnification selection mode, in order to
recognize the original size when the original is set on the original tray,
allowing the automatic selection of paper size and magnification ratio
of copy.
When originals composed of sheets of different sizes are set, this
detection method recognizes the largest sheet as the original size,
which is determined by the width measured by the original width
volume (DWVR) and the length measured by the original length sensors (DLS1, DLS2, DLS3).
The original size is determined in the timing of original sensing by the
original set sensor (DSS).
DLS3
DLS1
DWVR
DLS2
Sensor state for original size (Size detection on the tray)
Setting of
original tray
and
destination
AB series
Inch series
Original size and
set direction
A5 5 ● ——
B5 6 ● ——
A5R 3 ● ——
A4 7 ● ——
B5R 4 | ——
A4R 5 | ——
8.5" × 13" 5 | ——
B4 6 | ——
A3 7 | ——
8.5" × 5.5" 1 ●●—
8.5" × 5.5"R 0 ●●—
11" × 8.5" 2 ●●—
11" × 8.5R" 1 | ● —
8.5" × 13" 1 ||—
8.5" × 14" 1 ||—
11" × 17" 2 ||—
(Detection level or |: ON ●: OFF )
DWVR DLS1 DLS2 DLS3
Sensor state
Sensor state for original size (Size detection on the tray)
Setting of
original tray
and
destination
Foolscap
conforming
AB series
Foolscap
conforming
inch series
Original size and
set direction
A5 5 ●●—
B5 6 ●●—
A5R 3 ●●—
A4 7 ●●—
B5R 4 | ● —
A4R 5 | ● —
8.5" × 13" 5 ||—
B4 6 ||—
A3 7 ||—
8.5" × 5.5" 1 ●●●
8.5" × 5.5"R 0 ●●●
11" × 8.5" 2 ●●●
11" × 8.5R" 1 | ●●
8.5" × 13" 1 ||●
8.5" × 14" 1 |||
11" × 17" 2 |||
(Detection level or |: ON ●: OFF )
DWVR DLS1 DLS2 DLS3
Sensor state
– 15 –
2) Original size detection by the original width sensor
(DWS) in the paper feed section
The original size detection by the original width sensor (DWS) in the
paper feed section is used in automatic paper size and automatic
magnification ration selection mode to determine whether the original
is A4 or A5 (11" x 8.5" or 8.5" x 5.5").
When originals composed of stacked sheets of different sizes are set
in the original tray, the original size cannot be detected by the sensors in the original tray. Therefore, this function is provided to sense
the original size when preliminary paper feed is completed, as far as
originals of A4 or A5 size (11" x 8.5" or 8.5" x 5.5") (portrait) is
concerned. Consequently, if A4- and A5-size (11" x 8.5" or 8.5" x
5.5") originals (portrait) are stacked and set in the original tray, the
original size detection by the paper feed section original width sensor
(DWS) has the priority over the original size detection by the original
set tray.
When A4- and A5-size (11" x 8.5" and 8.5" x 5.5") originals (portrait)
are stacked and set in the original tray, the original length sensors
(DSL1, DSL2, DLS3) are not actuated. Therefore, the original width is
sensed by the paper feed section original width sensor (DWS) to
judge A4 or A5 (11" x 8.5" or 8.5" x 5.5").
Paper feed section original width sensor (DWS)
A4
B5
Paper feed section original width sensor (DWS)
11"x8.5"
8.5"x5.5"
Paper feed section original width sensor (DWS)
Paper feed section original width sensor (DWS) status
Original size
A4 |
B5 ●
|: Output LOW (Detection)
●: Output HIGH
Paper feed section original width sensor (DWS)
Paper feed section original width sensor (DWS) status
Original size
11" × 8.5" |
8.5" × 5.5" ●
– 16 –
|: Output LOW (Detection)
●: Output HIGH
3) Original size detection by the paper feed motor
rotation sensor (DFMRS)
This function compensates for the inaccuracy of the original size
recognition in the original tray when originals of different sizes are
stacked in the original tray. That is, results of this function has priority
over the original size detection in the original tray. The pulses of the
slit disc rotation of the feed motor (DFM) are counted in the period
before the rear edge of original is sensed (DFD output LOW) by the
original feed sensor after the feed motor (DFM) has started reverse
rotation, that is, after the resist roller has started rotating and feeding
of original from the fed section to the transport section has been
started, to determine the original length.
To improve detection accuracy, the original width is sensed also by
the paper feed section original width sensor (DWS).
A) Resist roller rotation start (The original is fed from the paper feed
section.)
Original feed sensor (DFS)
A
Resist roller
B) Original feed sensor (DFD) detects the original rear edge.
Original feed sensor (DFD)
B
Resist roller
The paper feed motor rotation sensor (DFMRS) counts the number of
rotations of the paper feed motor (DFM) between A and B to judge
the original length.
– 17 –
[6] DISASSEMBLY, ASSEMBLY AND
2. Belt unit dis asse mb ly
ADJUSTMENT
* Descriptions in this chapter excludes simple disassembly and as-
sembly operations. Refer to the parts guide for the disassembly ad
assembly of parts which are not explained here.
* Refer to the description in [7] ACTUAL WIRING DIAGRAM for the
processing of the wiring during assembly.
1. Transport section opening
1 Loosen two screws which are fixing the hinge stopper to allow the
hinge stopper to move.
2 Slide the hinge stopper downward by using the step screw, fit the
dove with the hole and tighten the two fixing screws which were
loosen before.
3 Open the transport section.
1 Open the transport section.
2 Remove two screws as shown in the figure below, and remove the
belt unit as shown with arrow A and arrow B in this sequence.
A
Screw
(Loosen.)
Belt unit
Screw (Loosen.)
Hinge stopper (Move down.)
B
– 18 –
3. Paper feed unit disassembly
4. Paper exit un it dis asse mb ly
1 Open the transport section.
2 Remove the tray. (Refer to the installing procedure.)
3 Remove four screw which are fixing the lower cover, and remove
the blower cover.
4 Remove the five fixing screws of the paper feed unit, open the
paper feed cover, and remove the fixing screw.
Paper feed
cover
Paper feed unit
fixing screw
(Loosen.)
Paper feed unit
fixing screws
1 Open the transport section and remove the lower cover.
2 Remove the five fixing screw of the paper exit unit.
3 Remove the paper exit unit harness connector from the control
PWB, and pull out the harness from the edge saddle shown in the
figure below. Then remove the paper exit unit.
Edge saddle
Screw
Screw
Reverse
unit
Paper feed unit
Lower cover
5 Remove the paper feed motor drive belt, and remove the four
harness connectors. Then remove the paper feed unit.
Harness
connector
(Remove.)
Paper feed
unit
Paper feed motor
drive belt (Remove.)
Paper feed
motor
5. Separation roller disassembly
1 Open the paper feed cover.
2 Remove two fixing screws of the separation unit, and remove the
separation unit.
Screw (Remove.)
Separation unit
– 19 –
3 Remove two screws from the separation unit, and remove the
separation roller holder unit.
Screw
(Remove.)
Separation roller
holder unit
4 Remove two springs from the separation roller holder, and remove
the bearing and the slide bearing. Remove the separation roller
and the spring clutch.
Spring
(Remove.)
Slide shaft
bearing
Separation roller
Spring clutch
6. Semi-circular roller, paper feed roller
disassembly
1 Open the paper feed cover.
2 Loosen two fixing screws of the tray guide top, and remove two
fixing screws of the side.
3 Remove the harness from the tray guide upper, and remove the
tray guide.
(Be careful not to scratch the harness.)
Side fixing screw
(Remove.)
Tray guide
Side fixing
screw
(Remove.)
Harness
(Remove.)
4 Remove the snaps from the both ends of the pickup shaft and the
separation shaft. (2 kinds of snaps)
5 Remove the pickup shaft bearing and the separation shaft bearing
on the front frame side.
6 Slide the pickup shaft toward the rear frame, and pull out the front
frame side from the chassis.
7 Remove the shaft stopper and the parallel pin from the pickup
shaft and remove the semi-circular shaft.
8 Slide the separation shaft toward the rear frame, and pull out the
front frame side from the chassis.
9 Remove the shaft stopper from the separation shaft, and remove
the paper feed roller.
Top fixing screw
(Remove.)
Bearing
Snap
Shaft bearing
– 20 –
Shaft stop
Pickup shaft
Snap
Rear frame
side
Semi-circular roller
Parallel pin
Shaft stop
Paper feed
roller
Front frame
side
Separation shaft
7. Open/close switch attachment
When closing t he t ransport section from the open state, adjust the
DF open SW plate so that the clearance between the glass surface
and the DF spacers L and R (front side) is 10 ∼ 40mm. Then tighten
the fixing screw.
10~40mm
Microswitch
Fixing
screw
DF open SW plate
[Note for assembly]
1 When installing the original transport belt, put the right and left in
parallel, and allow the same clearance between the spacer and
the belt in the front side and in the rear side.
Spacer
Belt unit
Spacer
2 Check that the original transport belt is not on the belt guide.
Spacer
Spacer
8. Original transport belt replacement
1 Remove the belt unit.
2 Remove the two screws shown in the figure below to allow the
belt tension plate to be moved. Remove the transport belt with the
left and the right in parallel.
Original
transport
belt
Screw
(Remove.)
Belt guide
Transport belt
Transport belt
Belt guide
Belt tension plate
– 21 –
[7] CONNECTOR LAYOUT
2. Paper feed motor peripheral
1. Control PWB peripheral
IF harness
Control PWB
RU harness
Control PWB
Paper feed motor (DFM)
Paper feed motor
rotation sensor
Original set
sensor (DSS)
TR2 harness
Drive F harness
Paper feed
guide switch
(FGOD)
ASM-earth lead W
SENSOR 2 harness
SENSOR harness
Drive R harness
Drive I/F harness
Control PWB
TR1 harness
SNR harness
SENSOR I/F
harness
Transport motor (DTM)
LED harness
SENSOR I/F
harness
Drive I/F harness
Paper feed motor
(DFM)
Paper feed motor rotation
sensor (DRMRS)
3. Paper feed section (Front side)
SENSOR 2
harness
– 22 –
SOL harness
Paper feed solenoid (DFSOL)
4. Paper feed unit
ASM-sensor 2
Original feed
sensor (DFD)
ASM-SOL
ASM-earth lead W
Original width
sensor (DWS)
7. Reverse un it sectio n
(Reversing sensor peripheral)
Reversing guide
switch (TGOD)
ASM-RU
Original timing sensor (DTD)
5. Reverse un it sect io n (Fro nt side)
RU harness
Reverse solenoid (DRSOL)
6. Reverse un it sect io n (Rear side )
Reversing guide
switch (TGOD)
Reversing
motor (DRM)
Reversing sensor (RDD)
8. Paper feed section in the DF cover
ASM-LED
LED PWB
ASM-drive F
ASM-LED
Control PWB
ASM-RU
ASM-drive R
ASM-TR2
ASM-sensor 2
ASM-sensor 1
– 23 –
9. ADF open/clo se switch peripheral
ADF open/close switch (AUOD)
3) Inch series (Conforming to other than 13")
AB series (Conforming to 13")
ASM-TRAY
Original length
sensor 1 (DLS1)
ASM-drive IF
10. Tray inside
1) Inch series (Conforming to 13")
Original length
sensor 3 (DLS3)
Original length
sensor 2 (DLS2)
Original length
sensor 1 (DLS1)
ASM-LED
ASM-TRAY2234
Original width volume
sensor (DWVR)
Original width volume
sensor (DWVR)
2) AB series (Conforming to other than 13")
ASM-TRAY
Original length
sensor 2 (DLS2)
Original length
sensor 1 (DLS1)
Original width volume
sensor (DWVR)
– 24 –
[8] REPLACEMENT PARTS AND
4. Test mode
MAINTENANCE
1. Replacement parts
Part name Replacement timing
Separation roller 100K copies
Transport belt 100K copies
2. Maintenance parts (Cleaning at every
10K copies)
Clean the parts shown in the table below at maintenance as specified
in the table.
Part name Cleaning method
Original set sensor (DSS) Air blow
Original feed sensor (DFD) Air blow
Original timing sensor (DTD) Air blow
Original width sensor (DWS) Air blow
Paper exit sensor (DES) Air blow
Reverse sensor (RDD) Air blow
Paper feed roller Wipe with alcohol.
Semi-circular roller Wipe with alcohol.
Resist roller Wipe with alcohol.
Paper exit roller Wipe with alcohol.
Reverse roller Wipe with alcohol.
3. DIP switch
The DIP switch on the control PWB shown below allows the individual
operation check of the RADF (ADF).
(1) Control PWB outline
LED
Push switch
DIP seitch (5-pole)
EPROM
(1) Details of the test modes
To enter the test mode, supply the power while pressing the push
switch on the control PWB.
If DIP switch 3 is OFF when supplying the power, the destination is
set to Inch series. If ON, AB series.
If DIP switch 4 is OFF, the normal paper mode, and if ON, the thin
paper mode.
If DIP switch 1 is ON, the transport speed is set to the medium speed.
If DIP switch 5 is ON, the low speed mode. If DIP switch 1 and 5 are
ON, or OFF, the high speed mode.
[Mode setting by the switches when supplying the power]
Switch ON OFF
Push switch
DIP switch 3 AB series destination Inch series destination
DIP switch 4
[Transport speed setting by the switches when supplying the power]
DIP switch 1 DIP switch 5 Transport speed
OFF OFF High speed: 867 [mm/sec]
ON OFF Medium speed: 800 [mm/sec]
OFF ON Low speed: 700 [mm/sec]
ON ON High speed: 867 [mm/sec]
* The above setting is valid only when supplying the power. To
change the mode, be sure to supply the power.
RADF signal unit
operation test mode
Thin paper feed mode Normal paper feed
PPC connection mode
mode
(2) Kinds of test modes
The operation mode is set by the DIP switch state when opening/closing the DF. To change the mode, set the DIP switch and
open/close the DF.
[Kinds]
1 Single paper feed mode
2 Duplex paper feed mode
3 Single aging mode
4 Duplex aging mode
5 Load check mode
2
6 E
PROM initializing + all sensors adjustment mode
7 Each sensor A/D change mode
8 Resist sensor adjustment mode
9 Timing sensor adjustment mode
F Paper exit sensor adjustment mode
(2) DIP switch outline
ON
OFF
SW No.1 2 3 4 5
– 25 –
3. Error kinds
The kinds of JAM/error and the LED display examples are shown in
the table below.
JAM/motor lock errors are canceled by opening/closing the DF after
JAM treatment or by supplying the power again.
JAM, error kinds LED display
Not-reached/remaining JAM in
the paper feed section
Not-reached/remaining JAM in
the paper exit section
Paper feed motor lock error REMOVE ORIGINAL LED
Resist/timing sensor
adjustment error (When
supplying power/starting paper
feed)
Paper exit sensor adjustment
error (When supplying
power/starting paper feed)
Sensor adjustment D/A output
upper limit error (Adjustment
mode)
Sensor adjustment D/A output
lower limit error (Adjustment
mode)
REMOVE ORIGINAL LED
blinks at the cycle of 1000msec.
ADF FEED LED blinks at the
cycle of 1000msec.
blinks at the cycle of 2000msec.
REMOVE ORIGINAL LED
blinks at the cycle of 100msec.
ADF FEED LED blinks at the
cycle of 100msec.
ADF FEED LED blinks at the
cycle of 100msec.
REMOVE ORIGINAL LED
blinks at the cycle of 100msec.
3 Single aging mode
ON
OFF
SW No.1 2 3 4 5
When the push switch is pressed, aging is started. The operation
is made when the size of the original on the original paper feed
tray is detected. It is made for each size.
4 Duplex aging mode
ON
OFF
SW No.1 2 3 4 5
When the push switch is pressed, aging is started. The operation
is made when the size of the original on the original paper feed
tray is detected. It is made for each size.
5 Load check mode
ON
4. Each test mode and JAM error
Set the DIP switch on the control PWB and open/close the DF to set
to each mode. The original size and normal paper/thin paper mode
settings are made when supplying the power.
When a JAM or an error occurs, the LED shows the cause. the JAM
or error is canceled by opening/closing the DF after removing the
JAM or by supplying the power again.
1 Single paper feed mode
ON
OFF
SW No.1 2 3 4 5
When an original is set on the paper feed tray, the original feed
LED lights up. When the push switch is pressed, the original on
the paper feed tray is fed. is
2 Duplex paper feed mode
ON
OFF
SW No.1 2 3 4 5
When an original is set on the paper feed tray, the original feed
LED lights up. When the push switch is pressed, the original on
the paper feed tray is fed.
JAM, error kind LED display
Not-reached/remaining JAM
in the paper feed section
Not-reached/remaining JAM
in the paper exit section
Paper feed motor lock error REMOVE ORIGINAL LED blinks
REMOVE ORIGINAL LED blinks
at the cycle of 1000msec.
ADF FEED LED blinks at the cycle
of 1000msec.
at the cycle of 2000msec.
OFF
SW No.1 2 3 4 5
Every time when the push switch is pressed, the operation is
performed in the sequence of 1 ∼ Q.
1 Original feed LED ON/Original remaining LED ON/Paper feed
solenoid ON
↓
2 Reverse solenoid ON, Paper feed solenoid OFF
↓
3 Original feed LED OFF, Original remaining LED OFF, reverse
solenoid OFF
↓
4 Original feed LED ON, Original remaining LED ON, paper feed
solenoid ON, Paper feed motor forward rotation 450mm/s
(preliminary paper feed)
↓
5 Original feed LED OFF, Original remaining LED OFF, paper
feed solenoid OFF, Paper feed motor OFF
↓
6 Original feed LED ON, Original remaining LED OFF, paper
feed motor reverse rotation 450mm/s (2-step first taking)
↓
7 Original feed LED OFF, Original remaining LED OFF, Paper
feed motor OFF
↓
8 Original feed LED ON, Original remaining LED ON, Paper feed
motor reverse rotation 850mm/s (Paper feed operation)
↓
9 Original feed LED OFF, Original remaining LED OFF, Paper
feed motor OFF
↓
F Original feed LED ON, Original remaining LED ON, Transport
motor forward rotation 867mm/s
↓
– 26 –
G Original feed LED OFF, Original remaining LED OFF,
Transport motor OFF
↓
H Original feed LED ON, Original remaining LED ON, Transport
motor reverse rotation 867mm/s
↓
I Original feed LED OFF, Original remaining LED OFF,
Transport motor OFF
↓
J Original feed LED ON, Original remaining LED ON, Reverse
motor forward rotation 867mm/s (Reverse operation)
↓
K Original feed LED OFF, Original remaining LED OFF, Reverse
motor OFF
↓
L Original feed LED ON, Original remaining LED ON, Reverse
motor forward rotation 867mm/s
↓
M Reverse motor speed reduction 867 → 297mm/s (Paper exit
speed reduction operation)
↓
N Original feed LED OFF, Original remaining LED OFF, Reverse
motor OFF
↓
O Original feed LED ON, Original remaining LED ON, Reverse
motor forward rotation 867mm/s
↓
P Reverse motor speed reduction 867 → 297mm/s (Paper exit
speed reduction operation)
↓
Q Original feed LED OFF, Original remaining LED OFF, Reverse
motor OFF
↓
Return to 1.
JAM, error kinds LED display
Paper feed motor lock
error
2
6 E
PROM initializing + all sensors adjustment mode
ON
REMOVE ORIGINAL LED blinks
at the cycle of 2000msec.
7 Each sensor A/D change mode
ON
OFF
SW No.1 2 3 4 5
When the push switch is pressed, a measurement is started. At
that time, LED blinks at the cycle of 100msec.
This mode checks the A/D value when the D/A output of the resist
sensor and the timing sensor is changed to 0 ∼ 255 (0[V] ∼ 5[V]).
The measurement program (PDP300.EXE) is required.
When each sensor A/D change mode is started, the D/A value of
the resist sensor and the timing sensor is changed. The A/D value
at that time is sent and at the completion of the operation, the
LCD turns ON.
8 Resist sensor adjustment mode
9 Timing sensor adjustment mode
F Paper exit sensor adjustment mode
When the DIP switch on the control PWB is set to either of the
following and the DF is opened and closed. each sensor adjustment mode is set.
Only the sensors which are set with the DIP switch are adjusted.
To adjust two or more sensors, open and close the DF again after
setting the DIP switch.
Before starting the sensor adjustment, check that there is no JAM
and that the DF is closed.
ON
OFF
SW No.1 2 3 4 5
ON
OFF
SW No.1 2 3 4 5
OFF
SW No.1 2 3 4 5
When the push switch is pressed, E2PROM initializing is performed. At that time, ADF FEED LED blinks at the cycle of
100msec.
When E2PROM initializing is completed, ADF FEED LED turns
ON. In the case of E2PROM initializing error, ADF FEED LED
blinks at the cycle of 2000msec.
Then the adjustments of all the sensors are started. At that time,
REMOVE ORIGINAL LED blinks at the cycle of 100msec.
When the adjustments of all the sensors are completed. REMOVE
ORIGINAL LED turns ON. In the case of a sensor adjustment
error, REMOVE ORIGINAL LED blinks at the cycle of 2000msec.
* Only when E2PROM initializing is completed successfully, the
adjustments of all the sensors are performed.
JAM, error kind LED display
E2PROM initializing error ADF FEED LED blinks at the
cycle of 2000msec.
Sensor adjustment error REMOVE ORIGINAL LED blinks
at the cycle of 2000msec.
– 27 –
ON
OFF
SW No.1 2 3 4 5
When the push switch is pressed, each sensor adjustment is
started. At that time, LED blinks at the cycle of 100msec.
After completion of the sensor adjustment, LED turns ON. In case
of an sensor adjustment error, LED blinks at the cycle of
100msec.
JAM, error kind LED display
Sensor adjustment
upper limit error
Sensor adjustment
lower limit error
REMOVE ORIGINAL LED goes off.
ADF FEED LED blinks at the cycle of
100msec.
REMOVE ORIGINAL LED blinks at the
cycle of 100msec.
ADF FEED LED goes off.
[9] TROUBLESHOOTING
A. ADF does not operate. B. Motor error (DFM)
A
B
Is the interface
harness connected
properly ?
YES
Is DC5V
supplied between
CN6-3 and -4 ?
YES
Is DC24V
supplied between
CN6-1 and -2 ?
YES
Is the original set
display lighted ?
YES
Replace the control
PWB.
NO
NO
NO
NO
Connect the harness.
Is the harness
conducting ?
Check the copier PPC or
replace the ADF PEB.
E
Replace the harness.
YES
Is the load
at the motor shaft
normal ?
YES
Does the
motor rotate even
slightly ?
YES
Is the motor
clock sensor output
normal ?
Replace the control
PWB.
NO
NO
NO
Adjust the mechanism load
and the drive system, and
remove foreign materials.
Is a voltage
supplied between
CN5-1 and -2 ?
YES
E
Is a voltage
supplied between
CN5-1 and
CN5-2 ?
NO
NO
Connect the
harness.
YES
Is the
harness
conducting ?
NO
Replace the
harness.
Replace the
motor.
YES
Replace the
control PWB.
– 28 –
C. Motor error (DTM, DRM) D. Sensor error (DFD, DTD RDD)
C
Is the motor
harness connected
properly ?
YES
Is the load
at the motor shaft
normal ?
YES
Is the harness
conducting ?
YES
Are the motor
connector pins (*)
conducting
normally ?
YES
NO
Connect the harness
properly.
Adjust the mechanism load
NO
and the drive system, and
remove foreign materials.
NO
Replace the harness.
NO
NO
D
Is the sensor
harness connected
properly ?
YES
Is the mirror
free from paper
dust or dirt ?
YES
Is the automatic
adjustment performed
properly ?
YES
Replace the control
PWB.
NO
Connect the harness
properly.
NO
NO
Clean the mirror.
Is the harness
conducting?
Replace the sensor.
Replace the harness.
NO
YES
Replace the PWB.
(*) DTM: Between CN4-5 and CN4-3, -4
Between CN 4-6 and CN4-1, -2
DRM: Between CN7-3 and CN4-7, -8
Between CN7-4 and CN4-5, -6
Replace the motor.
– 29 –
E. Sensor error (DLS1, DLS2, DLS3, DSS,
DWS, DFMRS)
F. Solenoid error (DFSOL, DRSOL)
E
Is the sensor
harness connected
properly ?
YES
Is the harness
conducting ?
YES
Is the control
PWB sensor output
normal ?
YES
Replace the control
PWB.
NO
NO
NO
Connect the harness
properly.
Replace the harness.
Replace the sensor.
F
DRSOL
DRSOL
Is the
solenoid positioned
properly ?
YES
Are the coils
conducting ?
YES
Is the
harness connected
properly ?
YES
Is the harness
conducting ?
YES
NO
NO
Replace the solenoid.
NO
Connect the harness.
NO
Replace the harness.
Adjust.
Replace the control
PWB.
G. Originals cannot be fed.
G
Are the rollers
in the paper feed
section free from
paper dust or
dirt?
YES
Does the
semi-circular roller
rotate ?
YES
NO
Adjust the mechanism load
NO
and the drive system and
remove foreign materials.
B
– 30 –
F
H. Originals cannot be reversed. I. Paper jam
H
Is the roller in
the reversing section
free from paper dust
or dirt ?
YES
Does the
reversing roller
rotate ?
YES
Does the
solenoid operate
properly ?
YES
Is the
reversing sensor
output normal ?
YES
Replace the control
PWB.
NO
NO
NO
Adjust the mechanism load
NO
and the drive system and
remove foreign materials.
C
F
D
I
Is the
machine free from
paper jam ?
YES
Is the
original feed sensor
(DFD) normal ?
YES
Is the
original width sensor
(DWS) normal ?
YES
Is the
original reversing
sensor(RDD)
normal ?
YES
Is the
original timing sensor
(DTD) normal ?
NO
Visually check and
remove the paper jam.
NO
NO
NO
NO
D
E
F
D
YES
Replace the control
PWB.
– 31 –
[10] ELECTRICAL SECTION
1. Genera l
This circuit controls feeding, stopping, and reversing of the original. It is composed of sensors, switches, the circuit which processes signals from the
copier PPC, the circuit which drives motors, solenoids, and clutches, the CPU, the G/A and its peripheral circuits.
2. Block diagram
DFD
DTD
DFMRS
DWS
DLS1
DLS2
DLS3
TXD
RXD
DTR
DSR
RES
SGND
Communication
I/O circuit
Original feed
sensor input
circuit
Timing sensor
input circuit
DIP switch
push switch
Paper feed motor
rotation sensor
input circuit
Original width
sensor input
circuit
Original length
sensor input
circuit
CPU
(IC11)
Display LED
lighting circuit
Transport
motor drive
circuit
Paper exit
reverse motor
drive circuit
EEPROM
(IC3)
DATA BUS
ADRESS DATA BUS
Reset circuit
Address
latch
(IC2)
A
B
Oscillation
circuit
5.0MHz
ADRESS BUS
ROM
(IC2)
G/A
(IC7)
ADF FEED lamp
REMOTE DOCUMENT lamp
Paper feed
motor drive
circuit
Current
control circuit
Paper feed
solenoid drive
circuit
Reverse
solenoid drive
circuit
A
DFSOL
DRSOL
DFM
DTM
RDD
DSS
DWVR
AUOD
FGOD
TGOD
Reverse
sensor input
circuit
Original set
sensor input
circuit
Original width
volume input
circuit
Cover
open/close
switch input
circuit
Oscillation
circuit
9.83MHz
– 32 –
DC+24V
+5V
SGND
PGND
B
Power input
circuit
Rush current
prevention
circuit
DRM
FD+24V
DC+24V
+5V
3. Operations
A. Sensor input circuit
[a] Original timing sensor (DTD)
The original timing sensor is a reflection type sensor, and the LED and the photo transistor are integrated into one. Infrared light emitted from the
LED is reflected by the mirror on the opposite side, and the reflected light enters the photo transistor to increase the photo current in the photo
transistor, detecting "No original."
On the other hand, if there is an original between the LED and the mirror, there is no reflection from the mirror. Therefore the photo current does not
increase and the original is detected.
This circuit is also provided with the automatic adjustment function.
The LED cathode is connected to the voltage-current conversion circuit composed of the operation amp (IC13), Q3, and R94. The current value is
controlled with the D-A output (analog voltage output) from the CPU. That is, the operation is made so that the CPU D-A output value (IC11-67 pin)
is equal to IC13 2 pin input voltage (the voltage drop of LED current by R94).
When, therefore, the D-A output value is changed, the current value is also changed.
On the other hand, the photo current of the photo transistor is converted into a voltage value by load resistor R95, and is inputted to IC9 4 pin and
the CPU 57 pin through the noise filter composed of R10 and C19.
R78, R80, R45, and IC9 form a voltage comparator, which compares the input voltage from the sensor with the threshold voltage (about 2V)
generated by dividing +24V with R78 and R80.
When the sensor input voltage exceeds the threshold voltage, the output of IC9 2pin turns LOW, being inputted to the CPU 72 pin as "No original"
signal.
The CPU 57 pin is an A-D input pin, which converts an analog voltage into a digital value inside the CPU. Since the sensitivity of a sensor generally
varies, it is automatically adjusted with the sensitivity at "No original" as the reference voltage. That is, the sensor voltage at "No original" is A-D
inputted to change the D-A output voltage, varying the LED current (LED light intensity) and controlling by the CPU so that the sensor voltage is the
specified constant level.
The D-A output value at that time is unique to every machine, and is stored in the EEPROM (IC3).
Original timing
sensor DTD
PH110M
TLN119B
173979-3
3
+5V
2
DTD
1
DTDLED
CN20-3
CN20-2
CN20-1
+5v
DTDLED
DTD
+5V
1
3
2SC2712
AN+24V
AGND
R95
3.0K
R10
10K
C19
0.10µ F
AGND
2
1-173981-0
CN3-1
CN3-3
CN3-2
Original timing sensor input circuit
Q3
R78
22K
R80
2.0K
5
4
R86
10K
R45
100K
IC9-1
µ PC339G2
IC13-1
1
µ PC358G2
2
CPU
(IC11)
TP7
3
2
R94
100
C5
1000PF
+5V
R53
4.7K
TP8
TP11
67
72
57
ANO0
P21/INTP0
P71/ANI1
– 33 –
[b] Original feed sensor (DFD)
The original feed sensor is a reflection type sensor, and the LED and the photo transistor form a pair. Infrared light emitted from the LED is reflected
by the mirror on the opposite side, and the reflected light enters the photo transistor to increase the photo current in the photo transistor, detecting
"No original."
On the other hand, if there is an original between the LED and the mirror, there is no reflection from the mirror. Therefore the photo current does not
increase and the original is detected.
This circuit is also provided with the automatic adjustment function.
The LED cathode is connected to the voltage-current conversion circuit composed of the operation amp (IC13), Q3, and R94. The current value is
controlled with the D-A output (analog voltage output) from the CPU. That is, the operation is made so that the CPU D-A output value (IC11-68 pin)
is equal to IC13 6 pin input voltage (the voltage drop of LED current by R93).
When, therefore, the D-A output value is changed, the current value is also changed.
On the other hand, the photo current of the photo transistor is converted into a voltage value by emitter resistor R66, and is inputted to IC9 6 pin and
the CPU 56 pin through the noise filter composed of R101and C14.
R79, R81, R46, and IC9 form a voltage comparator, which compares the input voltage from the sensor with the threshold voltage (about 2V)
generated by dividing +24V with R79 and R81.
When the sensor input voltage exceeds the threshold voltage, the output of IC9 1pin turns LOW, being inputted to the CPU 73 pin as "No original"
signal.
The CPU 56 pin is an A-D input pin, which converts an analog voltage into a digital value inside the CPU. Since the sensitivity of a sensor generally
varies, it is automatically adjusted with the sensitivity at "No original" as the reference voltage. That is, the sensor voltage at "No original" is A-D
inputted to change the D-A output voltage, varying the LED current (LED light intensity) and controlling by the CPU so that the sensor voltage is the
specified constant level.
The D-A output value at that time is unique to every machine, and is stored in the EEPROM (IC3).
Original feed
sensor DFD
PH110M
TLN119B
1
2
3
173979-3
+5V
DFD
DFDLED
CN21-1
CN21-2
CN21-3
+5v
DFDLED
DFD
4
6
5
+5V
AGND
R66
9.1K
R11
10K
2SC2712
AN+24V
C14
0.10µ F
1-173981-0
CN3-4
CN3-6
CN3-5
Original feed sensor input circuit
Q4
AGND
R79
22K
R81
2.0K
R87
10K
7
6
R46
100K
IC9-2
µ PC339G2
IC13-2
1
µ PC358G2
1
CPU
TP9
(IC11)
5
6
R93
100
C6
1000PF
+5V
R54
4.7K
TP12
TP10
68
ANO1
73
P22/INTP1
56
P70/ANI0
– 34 –
[c] Reverse sensor (RDD)
The reverse sensor is a reflection type sensor, and the LED and the photo transistor are integrated into one. Infrared light emitted from the LED is
reflected by the mirror on the opposite side, and the reflected light enters the photo transistor to increase the photo current in the photo transistor,
detecting "No original."
On the other hand, if there is an original between the LED and the mirror, there is no reflection from the mirror. Therefore the photo current does not
increase and the original is detected.
This circuit is also provided with the automatic adjustment function.
The LED cathode is connected to the circuit composed of R107, R108, and Q17. A high level or a low level input is passed to the base of Q17 to
vary the LED light quantity.
The base of Q17 is connected to the CPU 49 pin. When the CPU outputs a low level signal, Q17 is turned off and all forward current in the LED
flows through R108.
On the contrary, when the CPU outputs a high level signal, Q17 is turned on and the forward current in the LED flows through R108 and R107 in
parallel. That is, the forward current in the LED becomes about 1.7 times greater, increasing the light quantity.
On the other hand, the output voltage of the photo transistor is inputted through the noise filter composed of R32 and C20 to IC9 10 pin.
IC9 and R48 form a voltage comparator, which compares the sensor output voltage inputted to 10 pin and the threshold voltage inputted to 11 pin.
When the sensor output voltage is lower than the threshold voltage, the output at IC9 13 pin turns HIGH and the "original present" signal is inputted
to the CPU (IC11) 75 pin.
Since the sensitivity of a sensor generally varies, it is automatically adjusted with the sensitivity at "No original" as the reference voltage. That is, the
sensor voltage at "No original" is reduced into 1/3 by R74 and R63 and inputted to the CPU 58 pin.
At that time, the base of Q17 is at LOW level and the light quantity of the LED is kept low. The CPU 58 pin is an A-D input pin, which allows
conversion of an analog voltage into a digital voltage in the CPU. When the sensor output voltage inputted to the CPU is in the rang e of 1V ∼ 4.5V,
the gate array outputs from 18 pin the PWM signal of the duty corresponding to the voltage inputted to the CPU 58 pin.
The PWM signal is inputted to the integral circuit composed of R31 and C46 and converted into an analog voltage to be inputted to IC14 3 pin.
The converted analog output is the same as the sensor output voltage inputted to the CPU.
C22, R7, R6, and IC14 form a non-reverse amplifier, which amplifies the analog voltage inputted to IC14 3 pin to be double and outputs from 1 pin.
The output voltage is inputted to IC9 11pin as the threshold voltage, and compared with the sensor output voltage. That is, the threshold value is set
to 2/3 of the HIGH level of each sensor output. When the sensor output voltage inputted to the CPU 58 pin is lower than 1V, the gate array 18 pin
outputs a HIGH level signal to increase light quantity of the LED. If the output voltage is increased to the range of 1V ∼ 4.5V by this, the threshold
value setting similar to the above is performed.
If the sensor output voltage remains lower than 1V even though the light quantity of the LED is increased, it is judged as a sensor error.
If the sensor output voltage inputted to the CPU 58 pin is greater than 4.5V, the threshold value cannot be set and it is judged as a sensor error.
The set threshold voltage and the logic of CPU 49 pin when setting are unique to each machine and stored in the EEPROM (IC3).
Reverse
sensor
RDD
PH110M
TLN119B
173979-3
3
AN+24V
2
RDD
1
RDDLED
CN36-3
CN36-2
CN36-1
173981-7
CN8-1
CN8-2
CN8-3
AN+24V
1
AN+24V
2
RDD
3
RDDLED
AGND
AGND
R6
10K
R108
3.3K
AGND
R7
10K
2
3
R107
2.2K
C22
0.010µ F
IC14-1
µ PC358G2
Reverse sensor input circuit
TP50
Q17
FA1L3M
1
AGND
R72
4.7K
C46
0.1µ F
TP47
R31
4.7K
R32
10K
R74
3.0K
AGND
AGND
C20
0.10µ F
R63
1.5K
R70
10K
10
11
AGND
IC9-4
13
µ PC339G2
R48
100K
C15
0.10µ F
+5V
+5V
D4
SB02-03Q
R64
10K
R73
4.7K
TP14
TP16
58
49
75
18
CPU
(IC11)
P72/ANI2
P12
P24/INTP3
G/A
(IC7)
PWM5
– 35 –
[d] Paper feed motor rotation sensor (DFMRS)
This sensor senses rotation of the paper feed motor, and is composed of the photo interrupter built in the amplifier and the slit disc attached to the
motor shaft. The pulse signals corresponding to the motor speed are obtained. the motor rotation speed is sensed from the frequency of the pulse
signals, and the motor rotation amount is sensed by counting the pulse numbers.
The input section of signals is a noise filter composed of R55, C24, and Schmidt trigger invertor, which processes signals.
Paper feed motor
rotation sensor
DFMRS
TLP1225(C5)
Constant voltage
power
VCC
VOUT
GND
+5V
+5v
DFMRS
SGND
+5V
6
5
4
CN2-6
CN2-5
CN2-4
173981-9
1
2
3
R56
4.7K
R55
4.7K
C24
3300PF
IC4-5
TC74HC14AF
TP13
1011
CPU
(IC11)
74
P23/INTP2/CI
Paper feed motor rotation sensor input circuit
[e] Tray original size sensor, volume circuit
This circuit senses the original size on the tray, and its sensor section is built in the tray.
The original width is sensed by the slide volume (DWVR), and the original length is sensed by the three photo interrupters (DLS1, DLS2, DLS3).
The DWVR varies the resistance of the variable resistor with the lever attached to the original guide, and the variation is sensed as the voltage
value.
The signal is analog-inputted to the CPU A-D input pin (IC11 59 pin). On the other hand, DSL1, DSL2, and DSL3 use the photo interrupter which is
integrated with the light emitting diode and the photo transistor. When there is an original, the lever-type actuator interrupts the optical path. The
signal is inputted through the noise filter to the CPU.
DSL1: IC11 62 pin
DSL2: IC11 63 pin
DSL3: IC11 78 pin
Original width
volume DWVR
Original length
sensor 1 DLS1
Original length
sensor 2 DLS2
Original length
sensor 3 DLS3
GP1A25LC
Constant voltage
power
GP1A25LC
Constant voltage
power
TLP1225(C5)
Constant voltage
power
VCC
VOUT
GND
VCC
VOUT
GND
VCC
VOUT
GND
1-173981-2
+5V
CN1-1
DWVR
CN1-2
GND
CN1-3
1-173981-2
1
2
3
1
2
3
1
2
3
CN1-4
CN1-6
CN1-5
1-173981-2
CN1-7
CN1-9
CN1-8
1-173981-2
CN1-10
CN1-12
CN1-11
+5V
DLS1
GND
+5V
DLS2
GND
+5V
DLS3
GND
+5V
1
2
3
+5V
+5V
+5V
+5V
R71
4.7K
R65
4.7K
R76
4.7K
R21
10K
R22
10K
R43
10K
4
6
5
7
9
8
10
12
11
C13
0.010µ F
C17
0.010µ F
C18
0.010µ F
C23
0.010µ F
TP13
R60
4.7K
R35
10K
R36
10K
R38
10K
59
62
63
78
CPU
(IC11)
P73/ANI3
P76/ANI6
P77/ANI7
P27/SI
Tray original size sensor circuit
[f] Original set sensor (DSS)
The DSS uses a photo interrupter which is integrated with a light emitting diode and a photo transistor. The signal is passed through the noise filter
composed of R23, C16, and Schmidt trigger invertor (IC4) to the gate array (IC7 53 pin), then passed through the data bus to the CPU.
Original set
sensor (DSS)
TLP1240(C5)
VCC
VOUT
GND
1
2
3
CN2-1
CN2-3
CN2-2
173981-9
+5V
DWS
SGND
Original set sensor input circuit
– 36 –
R101
180
1
3
2
R115
15K
R23
10K
C16
0.010µ F
IC4-4
9
TC74HC14AF
8
G/A
(IC7)
53
P0
[g] Original width sensor (DWS)
The DWS uses a photo interrupter which is integrated with a light emitting diode and a photo transistor. When there is an original, the lever-type
actuator interrupts the optical path.
The circuit composed of Q12, R100, R29, and R47 is the connector disconnection sense circuit. When the connectors are not disconnected, the
base voltage (5V) of Q12 is divided by R100 and the LED of the photo interrupter to be about 1.2V, conducting the transistor.
At that time, the photo transistor is turned off under "paper empty" state, and the collector current of Q12 flows into R47.
Therefore, the signal DWS turns HIGH by the value (about 4.5V) obtained by dividing +5V with R49 and R47. When in "Paper present," the photo
interrupter turns ON and the collector current of Q12 flows into the photo interrupter. As a result, signal DWS turns LOW.
On the other hand, when a connector is disconnected, the base voltage of Q12 becomes +5V, turning off the transistor. Therefore, signal DWS turns
LOW and it is judged as "Paper present."
Signals are inputted through the noise filter composed of R33 and C21 to the gate array (IC7 54 pin).
+5V
Q12
FN1L3M
R29
15K
R47
150K
R33
10K
TP24
C21
0.010µ F
R34
10K
G/A
(IC7)
54
P1
Original width
sensor DWS
TLP1240(C5)
VCC
VOUT
GND
R100
180
CN3-7
CN3-9
CN3-8
173981-9
+5V
DWS
SGND
7
9
8
1
2
3
Original width sensor input circuit
[h] Open/close switch (AUOD, FGOD, TGOD) input circuit (TGOD --- SF-A56 only)
This circuit senses open/close of the ADF unit, the paper feed guide, and the reverse guide, and is connected with three microswitches. Any switch
is closed when its open/close section is closed.
The FGOD directly opens/closes the power to the paper feed motor and the paper feed solenoid. If the FGOD is not closed, the power is not
supplied to the paper feed motor and the paper feed solenoid.
The AUOD and the TGOD are connected in series to +24V, and directly close the power to the drive sections except for the paper feed motor and
the paper feed solenoid. That is, the power is supplied to the drive sections except for the paper feed motor and the paper feed solenoid only when
the two switches (AUOD, TGOD) are closed.
When the paper feed guide open/close switch is turned on, +24V is applied to the cathode of ZD7, supplying the base current to Q8, conducting Q8,
supplying an open/close signal (a close signal in this case) to IC7 57 pin.
Operations in the other open/close switch circuits are the same as above, and each open/close signal is inputted to IC7.
R44 and C40 form a snubber circuit which absorbs an induced voltage generated when the open/close switch is opened during rotation of the DC
motor.
ADF open/close
switch AUOD
Reverse guide
open/close switch
TGOD
Paper feed guide
open/close switch
FGOD
CN30-2
CN30-1
CN31-1
CN31-2
CN29-2
CN29-1
DC+24V
AUOD
AUOD
TGOD
DC+24V
FGOD
+5V
R13
R40
10K
10K
2
CN5-8
1
CN5-7
1
CN7-1
2
CN7-2
2
CN5-6
1
CN5-5
DC+24V
AUOD
AUOD
TGOD
DC+24V
FGOD
8
7
1
2
6
5
DC+24V
FD+24V
ZD6
PGND
RD18MB1
18V
R44
4.7
C40
47µ F
ZD5
RD18MB1
18V
ZD7
18V
FA1L3N
Q7
RD18MB1
Q11
FA1L3N
Q8
FA1L3N
Open/close switch input circuit
R12
10K
G/A
(IC7)
56
P3
55
P2
57
P4
– 37 –
B. Solenoid drive circuit
[a] Paper feed solenoid (DFSOL), reverse solenoid (DRSOL) drive circuit
This circuit drives the weight plate which presses the bundle of originals on the tray, the paper feed solenoid which drives the paper feed section
shutter, and the reverse solenoid which drives the reverse guide to lead an original to the reverse path when reversing. The basic composition is the
same. The drive signal (ON at HIGH) from the gate array is inputted to the gate of FET (Q14, Q15).
The ON duty of the drive signal can be varied from 0 to 100% (255 steps). The frequency, however, is 20kHz.
G/A
(IC7)
PWM2
PWM1
+24V
D8
SS14
TP28
15
14
R88
1.0K
TP36
R82
1.0K
PGND
PGND
Q14
2SK1726
SS14
Q15
2SK1282-Z
FD+24V
D7
173981-7
4
+24V
CN8-4
5
DRSOL
CN8-5
DF1B-9P-2^5DSA
4
+24V
CN5-4
3
DFSOL
CN5-3
DRSOL
DFSOL
Reverse
solenoid
Paper feed
solenoid
Solenoid drive circuit
C. Other circuit
[a] EEPROM (IC3) circuit
This circuit serves as a memory to save the sensitivity data of the reflection type sensors, the adjustment values such as the original set position on
the original table, and the counter values such as the number of originals passed. Data communication with the CPU (IC11) is performed with the
3-wire serial interface.
The saved data are maintained even when the power is turned off.
IC3 1 pin is the chip select pin, which is driven to HIGH when data communication is performed.
2 pin is the serial lock pin, and the serial data are transmitted in synchronization with the clock inputted to this pin.
3 pin is the input pin of serial data from the CPU. 4 pin is the output pin of serial data from IC3.
D1, R50, and C1 form a circuit which keeps the power of IC3 at a constant level even when a sudden power drop occurs during data writing.
+5V
D1
R50
10
100µ F
E2ROM+5V
C1
6
7
R49
100K
IC3
ORG
NU
93LC46TSN
R4
4
DO
R3
1
*CS
R2
2
CLK
3
R1
DI
EEPROM circuit
SB02-030
22K
22K
22K
22K
+5V
CPU
60
51
52
50
(IC11)
P74/ANI4
P14
P15
P13
D3
R8
10K
R24
10K
R42
10K
R41
10K
– 38 –
[b] Reset circuit
This circuit generates reset signals for the CPU and the external G/A, and is composed of IC6 and its peripheral circuits.
IC6 is provided with the reset function activated when the power is turned on and when the power falls below +5V.
The reset state is maintained until a certain time passes from when the power voltage reaches about 4.3V after supplying the power. The reset
maintaining time depends on the capacity of C9.
This circuit is also provided with the watch-dog timer function.
The watch-dog timer is built in the G/A (IC7) It starts the operation (count down) when RES2 turns HIGH. When RES2 is driven LOW, the watch-dog
timer count value is reset to the initial value. It monitors hung-up or other abnormalities of the CPU.
For monitoring, data (initial values) are written from the CPU to the G/A once for every 5ms. (Resetting to the initial values every 5ms.) The data are
counted down inside the G/A. Since the values are reset to the initial values every 5ms, the count normally does not fall to zero. If, however, a
hung-up of the CPU occurs, the data are not reset to the initial values, and the counter becomes zero. At that time, a H signal is inputted to NMi pin
of the CPU from G/A, and reset is performed by the software, and retry is performed until the CPU is resumed.
CPU
37
38
39
7
NMI
CPU
(IC11)
*RESET
G/A
(IC7)
RES1
WDT
RES2
To main body via
interface cable
DF3-6P-2DSA
RESET
CN9-6
R30
10K
+5V
65
M51953BFP
R58
4.7K
+5V
R5
22K
Q5
2SC2712
IC5.3
65
NC
HD74LS06FP
TP18
+5V
R9
10K
TP23
C44
0.1µ F
C42
0.1µ F
+5V
R61
4.7K
6
R52
4.7K
C4
1000PF
D6
DSA010
C43
0.1µ F
IC6
COUT
C9
0.33µ F
+5V
VCC
GND
7
4
Reset circuit
[c] Paper feed motor (DFM) drive circuit
This circuit controls the paper feed motor rotation and stop and the rotating direction. It is composed of the G/A (IC7) and the exclusive hybrid IC
(IC10), etc.
The motor rotation, stop, and rotating direction are controlled by the combination of binary logics inputted to the G/A through the data bus from the
CPU.
This p rovides control signals to the G/A 65 ∼ 68 pins.
The G/A 65 pin and 66 pin are for the PWM output for speed control. (Normal rotation, 65 pin; reverse rotation, 66 pin)
These signals are inputted to IC10.
IC 10 is a hybrid IC including 4 power MOSFET’s, and drives the motor by taking the G/A output 65 ∼ 68 pins.
The mot or operat es as follows by the combination of 65 ∼ 68 pins.
— 65666768
Before start 0 0 0 0
CCW 0 PWM 1 0
CW PWM 0 0 1
Brake 0 0 1 1
In the brake mode, the both terminals of the motor are shorted, generating a great braking torque to stop the motor.
G/A
(IC7)
MIH1
MIL1
MIH2
MIL2
CHGCLK
67
65
68
66
72
C49
0.1µ F
+5V
IC10
14
INA
12
INB
15
INC
3
IND
1
CLK
13
VCC2
16
SG
4
PG1
OUT1-1
OUT1-2
OUT2-1
OUT2-2
VZ
VCC1-1
VCC1-2
PG2
5
STK681-050
10
11
6
7
2
9
8
72µ H
L1
SK-8MS-5W
72µ H
L2
SK-8MS-5W
FD+24V
C34
1µ F
PGND
C28
0.1µ F
DF1B-9P-2^5DSA
1
DFW1
CN5-1
2
DFW2
CN5-2
DFM
Paper feed
motor
To power control circuit
Paper feed motor drive circuit
– 39 –
[d] Transport motor (DTM) drive circuit
This circuit controls the transport motor rotation/stop, the rotating direction, and the motor current. It is composed of the CPU (IC11), the constant
current chopper system driver IC (IC8), and the G/A (IC7).
The motor rotating speed and the rotating direction are controlled with the stepping motor drive excitement pattern signals from the CPU (12 ∼ 15
pins).
The PWM (20KHz) signal from the G/A (17 pin) is divided and integrated by R113, bR116, and C39 to be converted into a constant voltage, which is
inputted to IC8 (9 pin, 11 pin) to set the motor current value.
By varying the PWM signal duty, a desired motor current value can be obtained.
[e] Reverse motor (DRM) drive circuit
This circuit controls the reverse motor rotation/stop, the rotating direction, and the motor current, and is composed of the CPU (IC11), the
constant-current chopper system driver IC (IC12), and the G/A (IC7).
The motor rotating speed and the rotating direction are controlled with the stepping motor drive excitement pattern signals from the CPU (16 ∼ 19
pins).
The PWM (20KHz) signal from the G/A (16 pin) is divided and integrated by R112, bR114, and C37 to be converted into a constant voltage, which is
inputted to IC12 (9 pin, 11 pin) to set the motor current value.
By varying the PWM signal duty, a desired motor current value can be obtained.
+5V
+5V
A10
A20
B10
B20
A10
A20
B10
B20
C11
10µ F
2
3
6
7
12
NC
C10
10µ F
2
3
6
7
12
NC
+24V
+24V
DF1B-8P-2^5DSA
8
A
7
*A
6
B
5
*B
4
+24V
3
+24V
C54
100µ F
DF1B-6P-2^5DSA
4
A
3
*A
2
B
1
*B
5
+24V
6
+24V
C53
100µ F
CN7-8
CN7-7
CN7-6
CN7-5
CN7-4
CN7-3
CN4-4
CN4-3
CN4-2
CN4-1
CN4-5
CN4-6
Reverse
motor
DTM
Paper feed
motor
DRM
CPU
(IC11)
G/A
(IC7)
PWM3
PWM4
P04
P05
O06
P07
P00
P01
P02
P03
TP45
16
17
18
19
R112
68K
R114
9.1K
C37
0.1µ F
C33
100PF
TP43TP42
TP44
12
13
14
15
TP22TP33
R113
68K
16
17
R116
20K
C39
0.1µ F
C32
100PF
IC12
13
A1
15
A2
14
B1
16
B2
9
VREF
11
VREF
8
TD1
10
TD2
5
SG
4
PG
STK6712BMK4
PGND PGND
IC8
13
A1
15
A2
14
B1
16
B2
9
VREF
11
VREF
8
TD1
10
TD2
5
SG
4
PG
STK6713BMK4
PGND PGND
Transport motor/reverse motor drive circuit
– 40 –
[f] Paper feed motor (DFM) current limiting circuit
This circuit limits the motor start current to a constant level, and is composed of the resistor for detection of the current value and the voltage
comparator.
The negative voltage side of the paper feed motor is connected to the;pickup resistor composed of R97, R98, and R99, which converts the current
flowing in the driver circuit into a voltage value.
The converted voltage value is compared with the reference voltage by IC9 comparator.
The reference voltage is obtained by dividing the zenor voltage generated from R84 and ZD2 with R39 and R67. It is about 0.3V. When the
converted voltage value exceeds the reference voltage (about 2.8A in the current value), IC9 14 pin turns LOW and the signal is inputted to the G/A
62 pin, interrupting +24V supply to the motor. As a result, the current value is limited.
When the converted value falls below the reference value, +24V is supplied again to resume conduction to the motor.
Since the operating current of this circuit is considerably great,
it operates only when starting the motor and does not operate in the normal state.
G/A
(IC7)
MICUR
IC9-3
TP28
R37
10K
C7
1000PF
R20
10K
8
9
+5V
RD12MB2
ZD2
12V
R62
4.7K
µ PC339G2
FD+24V
PGND
14
R84
2.2K
R39
24K
R67
750
TP27
62
From paper feed motor
drive circuit
R99
R98
R97
0.39
0.39
0.39
PGND
Paper feed motor current control circuit
[g] Rush current limiting circuit
This circuit limits a rush current which flows into the current generation capacitors (C53, C54) in the transport motor (DTM)/reverse motor (DRM)
drive circuit, and is composed of the limiting resistor and the FET which allows to flow a constant current.
After closing the ADF open/close switch (AUOD) and the reverse guide open/close switch (TGOD) and until the cathode voltage of ZD3 reaches
16V, the base current is not supplied to Q10, which is kept OFF, driving IC4 3 pin HIGH.
At that time, the base current of Q9 is not supplied to turn off Q9, turning off Q3, flowing a current through R92.
On the other hand, when the cathode voltage of ZD3 exceeds 16V, the base current of Q10 flows to conduct the transistor, turning on Q13. As a
result, the current which was flowing through R92 flows through Q13 to cancel current limiting.
R25 is the discharging resistor which discharges electric charge in C53 and C54 when the ADF open/close switch (AUOD) or the reverse guide
open/close switch (TGOD) is opened.
DC+24V
Power supply
from main body
+5V
R68
4.7K
R105
20K
C56
0.22µ F
ZD3
16V
RD16MB2
Q10
FA1L3N
Rush current prevention circuit
– 41 –
R83
1.0K
13
TC74HC14AF
IC4-6
R92
4.7
2SJ265
12
Q13
R106
2.0K
FA1L3N
+24V
R25
4.7K
PGND
Q9
6
CN5-1
CN5-2
DFM1
DFM2
DF1B-9P-2^5DSA
101167298
IC10
42631
CDE FG HI
CONTROL PWB CIRCUIT DIAGRAM 1
Q2
+5V +5V
Q1
B
A
[11] CIRCUIT DIAGRAM
1
72µ HL272µ H
L1
SK-8MS-5W
OUT1-1
OUT1-2
INA
INB
AD (15 : 0)
Display LED
789
FN1L3N
FN1L3N
+5V
OUT2-1
INC
14
13
12
IC1
+5V
CN2-7
CN2-8
MDL1
MDL2
SB02-030
D1
2
SK-8MS-5W
OUT2-2VZVCC1-1
IND
CLK
IC2
TC74HC373AF
111347
R26
10K
CN2-9
SGND
+5V
E2ROM+5V
+5V
202210
*OCG1D2D3D4D5D6D7D
R49
R50
Paper feed motor
FD+24V
C34
1µ F
VCC1-2
VCC2
SG
13
16
C49
*CE
*OEA0A1A2A3A4A5A6A7A8A9
9876543
2569121516
1Q2Q3Q4Q5Q6Q7Q
012345678
173981-9
SB02-030
D3
22KR322KR222KR122K
R4
412
IC3
100K
C1
10
C28
0.1µ F
STK681-050
PG2
5
PG1
4
0.1µ F
0123456
1112131415
O0O1O2O3O4O5O6
19
8
131417
18
10K
10KR810K
R41
R42
SK
DO
*CS
ORG
6
100µ F
8Q
8D
3
7
PGND
252421
DI
TEST
5
+5V
7
17
18
16
A10
23226
9
1011121314
TP10
TP11
TP16
10K
R24
LE93C46M1
R99
0.39
R98
0.39
R97
0.39
10K
R20
C7
1000PF
TP40
8
9
IC9-3
14
µ PC339G2
R62
4.7K
+5V
TP27
61
62
63
64
65
66
67
68
70
71
72
74
75
76
77
78
79
80
10K
R28
10K
R27
LE27C256F
DSR
012
2345678 234567899
RDDLED
+5V
DWVR
OSC2
41
42
43
44
46
47
48
49
50
51
52
53
54
56
57
58
59
60
O7
A11
A13
A14
A12
27
+5V+5V
RA2-1
10K
x 8
RA1-1
10K
x 8
TP30
RDD
DFD
DTD
4
PGND
R37
10K
R84
2.2K
R39
24K
R67
750
FD+24V
ZD2
FGOD
AUOD
DWS
DSS
TGOD
+5V
60595857565554535150494847464544434241
P7P6P5P4P3P2P1
M1PWM
M1CUR
NC
NC
M1L1
M1L2
M1H1
M1H2
RD
WR
CHGCLK
A0
A1
A2
A3
A14
A15
ROMCS
NCNCD0D1D2D3D4D5D6D7XIN
123456789
1234567
0
R91
820
CST5 ~ OMGW
GL3PR8
LED1
+5V
3
67891011121314
4
5
40393837363534333231302928272625242322
P50/A8
P43/AD3
P44/AD4
P45/AD5
P46/AD6
P47/AD7
P42/AD2
P41/AD1
P40/AD0
ASTB
MODE
P10/PWM0
P11/PWM1
P12
P13
P14
P15
P16
P17
P70/ANI0
P71/ANI1
P72/ANI2
P73/ANI3
P74/ANI4
P75/ANI5
P76/ANI6
P77/ANI7
AVDD
AVREF1
AVSS
ANO0
61626364656667686970717273747576777879
DTR
DSL1
ANO1
+5V
DSL2
DTDDA
DFDDA
PGND
12V
RD12MB2
P0
S2B
S2A
S2Q
TCLK
TESTI1
TESTI0
BORROW
IC7
LSI-LC93043A-V54
XOUT
PWM1
PWM2
PWM3
1011121415161718192021
R90
R89
1.5K
P51/A9
PWM4
DFMPWM
DRMPWM
1.0M
15
P52/A10
P53/A11
P54/A12
P55/A13
P56/A14
P57/A15
IC11
µ PD78233GC-3B9
AVREF2
AVREF3
P20/NMI
P21/INTP0
P22/INTP1
P23/INTP2/CI
P24/INTP3
DFDOUT
DFMRS
RDDOUT
DTDOUT
WDT
S1B
S1Q
PWM5
PWM6
RDDPWM
P60/A16
P25/INTP4/ASCK
3
Reverse solenoid
Paper feed solenoid
8
CN8-5
CN5-4
CN5-3
CN5-4
173981-7
DRSOL
+24V
DFSOL
+24V
4
5
+24V
D8
SS14
NC
NC
S1A
40
RES2
39
WDT
38
RES1
37
M2CLKB
36
M2CLKA
35
M2CLK0
34
M2DIR
33
M2CUR
32
M2PWM
30
M2H2
28
M2H1
27
M2L2
26
M2L1
25
NC
24
NC
23
PWM7
PWM8
FANPWM
DF1B-9P-2^5DSA
4
3
FD+24V
Q15
2SK1282-Z
D7
SS14
Q14
2SK1726
PGND
C42
0.1µ F
R88
R82
1.0K
TP28
TP36
2
PGND
TP23
R9
10K
+5V
IC5.3
RESET
+5V
+5V
65
NC
R5
22K
6
OUT
7
VCC
C
IC6
5
C4
GND
HD74LS06FP
1000PF
M51953BFP
4
C9
0.33µ F
WDT
1.0K
Reverse motor
CN7-3
CN7-4*BCN7-5BCN7-6*ACN7-7ACN7-8
+24V
+24V
7
A20
B10
B20
VREF
16911810
TP43TP42
R112
DRMPWM
OSC1
+24V
3
C54
100µ F
12
NC
TD1
TD2SGPG
5
4
C33
C37
0.1µ F
100PF
9.1K
R114
68K
CST9 ~
109876
12345
KSD05
SW1-1
SW1-2
87654
DF1B-8P-2^5DSA
10µ F
C11
236
A10
+5V
VCC
A1A2B1B2VREF
IC12
131514
TP45
21
P64/RD
P65/WR
P61/A17
P62/A18
P63/A19
P66/*WAIT
P67/*REFRQ
20
PO7
19
PO6
18
PO5
17
PO4
16
PO3
15
PO2
14
PO1
13
PO0
12
X1
10
X2
9
*RESET
RESET
7
P37/TO3
6
P36/TO2
5
P35/TO1
4
P34/TO0
3
P33/SO/SB0
2
P32/*SCK
1
P26/INTP5
P27/SI
P30/RXD
P31/TXD
80
DLS3
TXD
RXD
PGND
C10
+5V
STK6712BMK4
PGND
83MTW
PSW1
SW1-3
SW1-5
SW1-4
43215
DF1B-6P-2^5DSA
10µ F
236
A10
VCC
A1A2B1B2VREF
IC8
131514
TP44
3
4
SKHHPK
1
2
Transport motor
+24V
7
A20
B10
B20
VREF
16911810
TP22TP33
R113
DFMPWM
68K
1
+24V
CN4-5*BCN4-1BCN4-2*ACN4-3ACN4-4
6
TD1
C39
CN4-6
+24V
C53
TD2SGPG
5
0.1µ F
R116
4
15K
EFGHI
100µ F
PGND
12
NC
STK6713BMK4
PGND
C32
100PF
CD
B
A
6
5
4
3
2
1
– 42 –
6
5
4
3
2
1
IC4-1
R61
+5V
R59
R57
DF3-6P-2DSA
TXD
DTR
RXD
43
21
TC74HC14AF
IC4-2
C2
1000PF
R77
4.7K
12
IC5-1
HD74LS06FP
R51
4.7K
4.7K
4.7K
+5V
2345613
TXD
RXDCN9-3
DTR
DSR
RESET
SGND
CN9-2
CN9-4
CN9-5
CN9-6
CN9-1
Communication
signal
FGOD
C40
47µ F
R44
DSR
RESET
C44
0.1µ F
TC74HC14AF
TP18
Q5
HD74LS06FP
R58
AGND
2SC2712
4.7K
DC+24V
10K
R30
D6
DSA010
C43
0.1µ F
4.7K
0.010µ F
47µ F
PGND
CN6-2
+5V
PGND
B4P-VH
R52
D9
S1G
+5V
C12
DC+24V
C31
PGND
1
2
DC+24V
CN6-1
+5V
C3
1000PF
34
IC5-2
4.7K
C50
0.1µ F
+5V
C55
470µ F
ZD1
6.2V
RD6^2FB
GND
4
+5V
SGND
CN6-3
CN6-4
Power supply
4.7K
FD+24V
R25
+5V
R105
R68
14.7K
Q10
RD16MB2
ZD3
PGND
4.7K
PGND
+5V
IC4-6
20K
FA1L3N
16V
R92
TC74HC14AF
13
12
C56
0.22µ F
+24V
Q13
4.7
Q9
2.0K
R106
2SJ265
R83
1.0K
C8
1000PF
2
1
TGOD
AUOD
CN7-2
CN7-1
DF-1B-8P-2^5DSA
Reverse guide
open/close switch
+5V
R12
10K
Q8
AUOD
+5V
R13
10K
TGOD
R40
10K
Q11
FA1L3N
PGND
RD18MB1
ZD5
DC+24V
DF-1B-9P-2^5DSA
Q7
FA1L3N
RD18MB1
ZD6
18V
98765
NC
DC+24V
AUOD
CN5-9
CN5-8
CN5-7
ADF open/close
switch
FA1L3N
FA1L3N
RD18MB1
ZD7
18V
FD+24V
DC+24V
FGOD
CN5-6
CN5-5
Paper feed guide
Fan motor
18V
CN8-6
CN8-7
FAN
DC+24V
DC+24V
D10
S1G
Q16
RN1427
PGND
R85
1.0K
TP48
FANPWM
open/close switch
E2ROM+5V
AN+24V
+5V
C38
0.1µ F
AGND
C26
0.10µ F
C25
0.10µ F
C30
0.10µ F
C62
1.0µ F
C41
1.0µ F
C48 C61
1.0µ F 1.0µ F
C47
0.1µ F
C36
0.1µ F
C51
1.0µ F
C35
0.1µ F
C52
1.0µ F
C60
1.0µ F
C59
1.0µ F
C45
1.0µ F
C58
47µ F
EFGHI
7
IC14-2
6
5
DLS1
DWVR
TP38
R35
R60
CDE FG HI
4.7K
C13
0.010µ F
R21
R71
4.7K
+5V
6
8
HD74LS06FP
IC4-3
µ PC58G2
AGND
DLS2
R36
10K
10K
C18
C17
0.010µ F
10K
R22
10K
R65
4.7K
+5V
+5V
HD74LS06FP
IC5-4
5
9
DLS3
R38
10K
C23
0.010µ F
0.010µ F
R43
10K
R115
+5V
R76
4.7K
180
R101
B
+5V
1234657981012111
+5V
DLS3
DWVR
CN1-2
width VR
SGND
CN1-3
SGNDCN1-5
GP1A25LC
GP1A25LC
CN1-4
Original length
sensor 1
Original length
+5V
1-173981-2
CN1-1
A
Original
CONTROL PWB CIRCUIT DIAGRAM 2
+5VCN1-7
+5V
DLS1CN1-6
6
SGND
DLS2
SGNDCN1-8
TLP1240
TLP1225
CN1-10
CN1-12
CN1-11
CN1-9
Third sheet
sensor
sensor 2
5
12
IC5-6
13
DSS
8
TC74HC14AF
IC4-4
9
C16
R23
10K
15K
23798
+5V
DSS
SGND
CN2-1
CN2-3
CN2-2
Original set
sensor
10
HD74LS06FP
HD74LS06FP
IC5-5
11
DWS
R34
TP24
R33
0.010µ F
15K
R29
Q12
FN1L3M
+5V
180
R100
1213
+5V
DWS
SGND
TLP1240
173981-9
CN3-7
CN3-9
CN3-8NCCN3-10
Original width
sensor
4.7K
TC74HC14AF
C24
SGND
CN2-4
+5V
3300PF
D4
SB02-03Q
TP50
AN+24V
173981-7
RDD
R64
R70
R74
123
AN+24v
CN8-1
RDD
CN8-2
Reverse sensor
RDDLED
10K
C15
0.10µ F
AGND
10K
R63
1.5K
AGND
3.0K
R32
10K
Q17
R107
R108
RDDLED
CN8-3
FA1L3M
2.2K
3.3K
AGND
AN+24V
DC+24V
AGND
C29
0.10µ F
C57
4.7µ F
10
R118
2
RDDOUT
TP14
R73
4.7K
+5V
13
R48
µ PC339G2
100K
IC9-4
10
11
C20
0.10µ F
AGND
TP47
R72
4.7K
1
C22
0.010µ F
µ PC358G2
IC14-1
R7
10K
2
3
R6
10K
C46
0.10µ F
AGND
R31
4.7K
RDDPWM
CD
B
AGND
AGND
A
1
DTFDA
DTDDA
TP7
10K
C21
0.010µ F
10K
R47
150K
+5V
+5v
1-173981-0
CN3-1
DTDOUT
TP8
R53
4.7K
+5V
C5
1000PF
100
R94
3
2
IC13-1
1
µ PC358G2
R86
10K
Q3
2
2SC2712
IC9-1
R45
100K
5
4
R78
22K
AN+24V
R10
2
DTDLED
CN3-3
Original timing
sensor
DTD
CN3-2
TP9
DTD
µ PC339G2
R80
2.0K
AGND
C19
0.10µ F
10K
R95
2.0K
AGND
+5V
4
+5v
1-173981-0
1-173981-0
CN3-4
4
DFDOUT
TP12
R54
4.7K
+5V
C6
1000PF
100
R93
5
6
IC13-2
1
µ PC358G2
R87
10K
Q4
1
2SC2712
IC9-2
R46
100K
7
R79
22K
AN+24V
6
DFDLED
CN3-6
Original feed
sensor
3
DFMRS
TP13
10
DFD
IC4-5
11
µ PC339G2
6
R55
R81
2.0K
AGND
C14
0.10µ F
R11
10K
R56
4.7K
+5V
R66
9.1K
AGND
+5V
5
654
DFMRS
DFD
+5v
TLP1225
173981-9
CN2-6
CN2-5
CN3-5
Paper feed motor
rotation sensor
– 43 –
6
DFM
MA4565B02
Paper feed motor
(96) RD
(97) BE
CN26-1
CN26-2
DFM2
DFM1
CN25-1
CN25-2
RD (90)
BE (91)
(90) RD
CN24-1
DFM1
CN23-1
RD (82)
5
AUOD
SS-5T
DFSOL
RD
RD
(135) RD
(136) RD
CN41-1
CN41-2
FD+24V
DFSOL
CN40-1
CN40-2
LB (98)
OE (99)
ASM-SOL
(98) LB
(99) OE
CN28-1
CN28-2
DFSOL
FD+24V
CN27-1
CN27-2
LB (92)
OE (93)
(91) BE
(92) LB
(93) OE
CN24-2
CN24-3
CN24-4
DFM2
DFSOL
FD+24V
CN23-2
CN23-3
CN23-4
BE (83)
LB (84)
OE (85)
FGOD
TDS-10SL-102
Paper feed solenoid
FGOD
DC+24V
CN29-1
CN29-2
OE (94)
BN (95)
ASM-drive
(94) BN
(95) OE
CN24-5
CN24-6
FGOD
DC+24V
CN23-5
CN23-6
BN (86)
OE (87)
SS-5T
Paper feed
guide switch
AUOD
DC+24V
CN30-1
CN30-2
BE (88)
BK (89)
ASM-drive I/F
4
TGOD
ADF open/close
switch
AUOD
TGOD
CN31-1
CN31-2
BK (100)
OE (101)
DRM
KH56JM2B013
Reverse guide switch
(110) BE
(111) GN
(108) WE
(109) BK
(112) YW
(113) RD
CN33-3*BCN33-4
CN33-1
CN33-2
CN33-3
CN33-4
B
+24V
+24V
A
*A
CN32-3
CN32-1
CN32-2
CN32-4
CN32-5
CN32-6
BE (104)
GN (105)
BK (103)
WE (102)
RD (107)
YW (106)
ASM-Drive R
3
RDD
Reverse motor
AN+24V
RDD
CN34-3
CN34-2
LB (115)
LB (116)
LB (117)
DRSOL
TDS-06A-4013
Reverse sensor
RDDLED
CN34-1
ASM-RU
Reverse solenoid
RD
RD
(123) RD
(124) RD
CN38-1
CN38-2
DRSOL
+24V
CN37-2
CN37-1
LB (118)
LB (119)
2
NC
DC+24V
TXD
FGND
RXDCN39-6
+5V
DSR
RESET
SGND
PGND
DTR
CN39-1NCCN39-2
CN39-3
CN39-4
CN39-5
CN39-7
CN39-8
CN39-9
CN39-10
CN39-11
CN39-12
I/F cable
OE (130)
VT (125)
GN/YW(134)
BN (126)
RD (132)
PK (128)
LB (129)
GY (133)
BE (121)
YE (122)
ASM-IF
GN/YW
FGND
(134)
1
(82) RD
(83) BE
(84) LB
(85) OE
(86) BN
(87) OE
(88) BK
(89) BE
CN5-1
CN5-2
CN5-3
CN5-4
CN5-5
CN5-6
CN5-7
CN5-8NCCN5-9
DFM1
DFM2
DFSOL
FD+24V
FGOD
DC+24V
AUOD
DC+24V
+5V
DWVR
SGND
+5V
SGND
DLS1CN1-6
+5V
SGND
DLS2
+5V
SGND
DLS3
CN1-1
CN1-2
CN1-3
CN1-4
CN1-5
CN1-7
CN1-8
CN1-9
CN1-10
CN1-11
CN1-12
LB (1)
LB (2)
LB (3)
LB (4)
LB (5)
LB (6)
LB (7)
LB (8)
LB (9)
LB (10)
LB (11)
LB (12)
(1) LB
(2) LB
(3) LB
(4) LB
(5) LB
(6) LB
(7) LB
(8) LB
(9) LB
(10) LB
(11) LB
(12) LB
CN42-12
CN42-11
CN42-10
CN42-9
CN42-8
CN42-7
CN42-6
CN42-5
CN42-4
CN42-3
CN42-2
CN42-1
+5V
DWVR
SGND
+5VCN43-4
SGND
DLS1
+5V
SGND
DLS2
+5VCN43-10
SGND
DLS3
CN43-1
CN43-2
CN43-3
CN43-5
CN43-6
CN43-7
CN43-8
CN43-9
CN43-11
CN43-12
LB (13)
LB (14)
LB (15)
LB (16)
LB (17)
LB (18)
LB (19)
LB (20)
LB (21)
LB (22)
LB (23)
LB (24)
(13) LB
(14) LB
(15) LB
(16) LB
(17) LB
(18) LB
(19) LB
(20) LB
(21) LB
(22) LB
(23) LB
CDE FG HI
CN44-12
CN44-11
CN44-10
CN44-9
CN44-8
+5V
DWVR
SGND
+5V
SGND
CN45-1
CN45-2
CN45-3
CN45-4
CN45-5
LB (25)
LB (26)
LB (27)
LB (28)
LB (29)
(25) LB
(26) LB
B
A
WIRING SYSTEMATIC DIAGRAM
(27) LB
CN46-3
CN46-2
CN46-1
+5V
DWVR
SGND
CN47-1
CN47-2
CN47-3
LB (37)
LB (38
LB (39)
(28) LB
(29) LB
DWVR
(30) LB
CN48-1
CN48-2
CN48-3
(39) LB
+5V
SGND
DLS1
DLS1
GP1A25LC
Original length sensor 1
Original width volume
ASM-VR
(37) LB
(38) LB
6
(24) LB
CN44-7
CN44-6
CN44-5
CN44-4
CN44-3
CN44-2
CN44-1
DLS1
+5V
SGND
DLS2
+5V
SGND
DLS3
CN45-6
CN45-7
CN45-8
CN45-9
CN45-10
CN45-11
CN45-12
LB (30)
LB (31)
LB (32)
LB (33)
LB (34)
LB (35)
LB (36)
ASM-TRAY ASM-TR2 ASM-TR1
(31) LB
(32) LB
(33) LB
(34) LB
(35) LB
(35) LB
CN49-1
CN49-2
CN49-3
CN50-1
CN50-3
CN50-2
+5V
SGND
DLS2
+5V
SGND
DLS3
DLS3
DLS2
GP1A25LC
TLP1225(C5)
Original length sensor 2
5
(105) GN
(106) YW
PBA-CONTROL
(107) RD
(102) WE
(103) BK
(104) BE
(100) BK
(101) OE
CN7-1*ACN7-2
CN7-4*BCN7-5
CN7-3
CN7-6
CN7-7
CN7-8
B
+24V
AUOD
A
TGOD
+24V
(PWB-C)
+5V
SGND
CN2-1
CN2-2
LB (40)
LB (41)
LB (42)
SGND
DSS
SGND
DFMRS
+5V
MDL1
MDL2
CN2-9
CN2-3
CN2-4
CN2-5
CN2-6
CN2-7
CN2-8
LB (43)
LB (44)
LB (45)
LB (46)
LB (47)
LB (48)
ASM-SNR
(117) LB
(118) LB
(119) LB
(115) LB
(116) LB
CN8-1
CN8-2
CN8-4
CN8-5
CN8-3
CN8-6
CN8-7
DC+24V
FAN
+24V
DRSOL
AN+24V
RDD
RDDLED
+5V
CN13-1
LB (58)
(125) VT
(126) BN
(127) YW
(128) PK
(129) LB
(130) OE
(131) BE
(132) RD
(133) GY
CN9-1
CN9-2
CN9-3
CN9-4
CN9-5
CN9-6
CN6-1
CN6-2
CN6-3
CN6-4
SGND
TXD
RXD
DTR
DSR
RESET
DC+24V
PGND
+5V
SGND
*B
+24V
CN4-1BCN4-2*ACN4-3ACN4-4
OE (76)
+24V
CN4-5
CN4-6
BE (77)
YW (78)
RD (79)
WE (80)
BK (81)
DWS
DTD
DTDLED
CN13-2
CN13-3
LB (59)
LB (60)
NC
+5V
DFD
DFDLED
+5V
SGND
CN13-9
CN13-10
CN13-4
CN13-5
CN13-6
CN13-7
CN13-8
LB (61)
LB (62)
LB (63)
LB (64)
LB (65)
LB (66)
EFGHI
ASM-sensor I/F
(127)
BK
(58) LB
(59) LB
(60) LB
(61) LB
(62) LB
(63) LB
(64) LB
(65) LB
CN18-7
DTDLED
CN19-3
LB (69)
Original timing sensor
(67) LB
CN18-6
CN18-5
CN18-4
CN18-3
CN18-2
CN18-1
+5V
DFD
DFDLED
+5V
SGND
DWS
CN19-4
CN19-5
CN19-6
CN19-7
CN19-8
CN19-9
LB (70)
LB (71)
LB (72)
LB (73)
LB (74)
LB (75)
ASM-sensor 2
DTM
MOT-KH56KM2-017
Current (belt) motor
(70) LB
(71) LB
(72) LB
(73) LB
(74) LB
(75) LB
CN21-3
CN21-2
CN21-1
CN22-3
CN22-2
CN22-1
+5V
DFD
DFDLED
+5V
SGND
DWS
DFD
DWS
PBA-SENSOR
-2214
TLP1241N(CS)
Original width sensor
Original feed sensor
2
1
CD
B
A
(46) LB
(47) LB
(40) LB
(41) LB
(42) LB
(43) LB
(44) LB
(45) LB
CN11-6
CN11-5
CN11-4
CN11-3
CN11-2
CN11-1
+5V
SGND
DSS
SGND
DFMRS
+5V
CN12-1
CN12-2
CN12-3
CN12-4
CN12-5
CN12-6
LB (49)
LB (50)
LB (51)
LB (52)
LB (53)
LB (54)
ASM-sensor 1
(49) LB
(50) LB
(51) LB
(52) LB
(53) LB
(54) LB
CN13-3
CN13-2
CN13-1
CN14-3
CN14-2
CN14-1
+5V
SGND
DSS
SGND
DFMRS
+5V
DSS
DFMRS
TLP1240(C5)
Original length sensor 3
TLP1225(C5)
Original set sensor
4
(48) LB
CN15-3
CN15-2
CN15-1
MDL1CN16-1
MDL2
SGND
CN16-2
CN16-3
LB (55)
WE (56)
YW (57)
ASM-LED
(55) LB
(56) WE
(57) YW
CN17-3
CN17-2
CN17-1
MDL1
MDL2
SGND
LED
(PWB-D)
Paper feed motor rotation sensor
Display LED
(127)
CN18-9
CN18-8
BK
+5V
DTD
CN19-1
BK
ASM-grounding pin
(127)
CN19-2
LB (67)
LB (68)
(67) LB
(68) LB
(69) LB
CN20-3
CN20-2
CN20-1
+5V
DTD
DTDLED
DTD
PBA-SENSOR
-2214
3
– 44 –
CAUTION FOR BATTERY REPLACEMENT
(Danish) ADVARSEL !
Lithiumbatteri – Eksplosionsfare ved fejlagtig håndtering.
Udskiftning må kun ske med batteri
af samme fabrikat og type.
Levér det brugte batteri tilbage til leverandoren.
(English) Caution !
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type
recommended by the manufacturer.
Dispose of used batteries according to manufacturer’s instructions.
(Finnish) VAROITUS
Paristo voi räjähtää, jos se on virheellisesti asennettu.
Vaihda paristo ainoastaan laitevalmistajan suosittelemaan
tyyppiin. Hävitä käytetty paristo valmistajan ohjeiden
mukaisesti.
(French) ATTENTION
Il y a danger d’explosion s’ il y a remplacement incorrect
de la batterie. Remplacer uniquement avec une batterie du
même type ou d’un type équivalent recommandé par
Mettre au rebut les batteries usagées conformément aux
(Swedish) VARNING
Explosionsfara vid felaktigt batteribyte.
Använd samma batterityp eller en ekvivalent
typ som rekommenderas av apparattillverkaren.
Kassera använt batteri enligt fabrikantens
le constructeur.
instructions du fabricant.
instruktion.
q
COPYRIGHT C 1997 BY SHARP CORPORATION
All rights reserved.
Printed in Japan.
No part of this publication may be reproduced,
stored in a retrieval system, or transmitted,
in any form or by any means,
electronic, mechanical, photocopying, recording, or otherwise,
without prior written permission of the publisher.
SHARP CORPORATION
Printing & Reprographic Systems Group
Quality & Reliability Control Center
Yamatokoriyama, Nara 639-11, Japan
1997 September Printed in Japan S
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