Toshiba Copier MD 0101 User Manual

General Precautions for Installation/Servicing/Maintenance for the MD-0101  
The installation and service should be done by a qualified service technician.  
1. When installing the MD-0101 to the Plain Paper Copier, be sure to follow the instructions described in  
the “Unpacking/Set-Up Procedure for the MD-0101” booklet which comes with each unit of the  
MD-0101.  
2. The MD-0101 should be installed by an authorized/qualified person.  
3. Before starting installation, servicing or maintenance work, be sure to turn off and unplug the copier  
first.  
4. When servcing or maintaining the MD-0101, be careful about the rotating or operation sections such  
as gear, pulleys, sprockets, cams, belts, etc.  
5. When parts are disassembled, reassembly is basically the reverse of disassembly unless otherwise  
noted in this manual or other related materials. Be careful not to reassemble small parts such as  
screws, washers, pins, E-rings, toothed washers to the wrong places.  
6. Basically, the machine should not be operated with any parts removed or disassembled.  
7. Delicate parts for preventing safety hazard problems (such as breakers, thermofuses, fuses, door  
switches, sensors, etc. if any) should be handled/installed/adjusted correctly.  
8. Use suitable measuring instruments and tools.  
9. During servicing or maintenance work, be sure to check the serial No. plate and other cautionary  
labels (if any) to see if they are clean and firmly fixed. If not, take appropriate actions.  
10. The PC board must be stored in an anti-electrostatic bag and handled carefully using a wristband,  
because the ICs on it may be damaged due to static electricity. Before using the wrist band, pull out  
the power cord plug of the copier and make sure that there is no uninsulated charged objects in the  
vicinity.  
11. For the recovery and disposal of used MD-0101, consumable parts and packing materials, it is  
recommended that the relevant local regulations/rules should be followed.  
12. After completing installation, servicing and maintenance of the MD-0101, return the MD-0101 to its  
original state, and check operation.  
Copyright 2000  
TOSHIBA TEC CORPORATION  
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1. SPECIFICATIONS  
Function  
: Stackless unit for duplex printing  
Paper  
: Size A3 to A5-R/LD to ST-R  
: Thickness Normal paper 64 to 80g/m2 (17 to 21 lbs)  
Transport speed  
: 92 mm/sec. (DP1600 series)  
: 124 mm/sec. (DP2000/2500 series)  
Dimensions  
Weight  
: 101 (W) x 488 (D) x 345 (H) mm  
: Approx. 4.3 kg  
Power supply  
: 5VDC, 24VDC (Supplied from copier)  
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MD-0101 SPECIFICATION  
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2. OUTLINE  
2.1 Names of Various Components  
Release lever  
ADU 02-01-01  
ADU paper guide assembly  
ADU release hook F  
Connection cable  
ADU release hook R  
ADU 02-01-02  
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MD-0101 OUTLINE  
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2.2 Layout of Electrical Parts  
SW1  
SEN2  
M2  
SEN1  
ADU (PWA-F-ADU)  
M1  
ADU 02-02-01  
Symbols and functions of various devices  
Symbol  
SEN1  
Name  
Function  
FED1-SEN  
Detects the transport of paper (Lower).  
ADU paper jam sensor (Lower)  
FED2-SEN  
SEN2  
SW1  
M1  
Detects the transport of paper (Upper).  
ADU paper jam sensor (Upper)  
ADUCOV-SW  
Detection of cover open/close status during jam  
processing, etc.  
ADU cover open switch  
FED1-MOT  
Drives the roller to transport paper (Lower).  
ADU motor (Lower)  
FED2-MOT  
M2  
Drives the roller to transport paper (Upper).  
ADU motor (Upper)  
PWA-F-ADU  
ADU  
PWA which relays the sensor signals and drives  
the motor.  
ADU PWA  
MD-0101 OUTLINE  
2 - 2  
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2.3 Harness Connection Diagram  
ADU 02-03-01  
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MD-0101 OUTLINE  
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2.4 Board Assembly  
1
1
6
6
3
1
1
2
CN215  
3
1
IC2  
CN216  
JP4  
CN214  
CN213  
STK672-210  
STK672-210  
>
PF-WP  
<
JP2  
CN217  
JP3  
1
12  
JP1  
IC1  
12  
1
C4  
R2  
C8  
C7  
JP10  
R4  
R3  
R6  
R10  
R11  
R12  
R13  
R14  
R15  
R16  
R17  
JP8  
JP9  
C2  
C6  
C3  
R7  
R8  
R5  
R9  
C1  
R1  
1
15  
CN212  
CN211  
4
1
JP11  
RV  
PD  
ADU 02-04-01  
MD-0101 OUTLINE  
2 - 4  
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3. OPERATIONAL DESCRIPTION  
3.1 General Operation  
The ADU is a unit which turns over printed paper. Installation of the unit enables duplex printing on paper.  
No paper can be stacked in the ADU.  
3.2 Block Diagram  
ADU  
FDMA-D  
(
)
)
M
M
ADU motor Lower  
PFC  
PWA  
EXMA-D  
+24V  
(
ADU motor Upper  
ADU  
PWA  
ADUFL  
ADUFU  
(
)
)
ADU paper jam sensor Lower  
(
ADU paper jam sensor Upper  
ADUCOVSW  
ADU cover open switch  
ADU 03-02-01  
The ADU has three sensors and two motors as shown above. One-side-printed paper passes through  
the ADU unit to be turned over and returned to the copier. The motor drive circuits (IC1, IC2) only are  
installed on the ADU PWA.  
The motor signals (EXM-A - D, FDM-A - D) are amplified by IC1 and IC2 and drive the motors. The signal  
of each sensor passes through the ADU PWA and is connected as it is to the PFC PWA.  
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MD-0101 OPERATIONAL DESCRIPTION  
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3.3 Detection of Abnormal Status  
3.3.1 Cover open/close detection  
When the ADU cover open sensor detects the open state of the cover, the detection signal is sent to the  
copier to stop the transport of paper.  
3.3.2 Paper jam detection  
When the one-side-printed paper is loaded into the ADU, the ADU paper jam sensors (upper/lower) turn  
ON (at “High” level) for a fixed time. If the ADU paper jam sensors (upper/lower) do not turn ON or their  
ON time is too long, the program will judge it to be paper jamming and stop the operation. The paper  
jamming can be cleared by opening the ADU and removing the paper.  
MD-0101 OPERATIONAL DESCRIPTION  
3 - 2  
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3.4 Flow Chart  
Start button ON  
Scanning of document  
NO  
All scanning?  
Change of document  
Start button ON  
YES  
Cassette feed  
Copy  
Transport to ADU  
Feed from ADU  
Copy  
Ejection  
NO  
Final copy  
YES  
End  
ADU 03-04-01  
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MD-0101 OPERATIONAL DESCRIPTION  
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4. MECHANICAL DESCRIPTION  
4.1 Paper Feed System  
Exit roller  
Flow of paper  
ADU paper jam sensor (Upper)  
Copier  
ADU  
ADU paper jam sensor (Lower)  
ADU 04-01-01  
The ADU has one transport path as shown above and paper enters the ADU from the top and comes out  
from the bottom. Paper is not stacked in the ADU but the ADU only transports the paper by using the two  
motors.  
Flow of Paper  
The flow of paper is as follows:  
The one-side-printed paper reversed at the exit unit.  
The roller in the exit unit reversely turns to draw the paper into the ADU.  
The paper having passed through the ADU is loaded again into the copier from the bottom of the  
ADU.  
ADU 04-04-02  
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MD-0101 MECHANICAL DESCRIPTION  
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Printing takes place on the back of the paper and the paper is ejected.  
Copier side  
ADU motor (Upper)  
Flow of paper  
ADU motor (Lower)  
ADU 04-02-01  
4.2 Drive System  
In the ADU, paper is transported by two pulse motors.The ADU motor (upper) drives the upper roller and  
the exit roller of the copier as a result of changing (moving) the gear on the copier side, thereby drawing  
in the one-side-printed paper from the copier.  
The paper drawn into the ADU is fed into the copier again from the ADU (bottom) by the roller driven by  
the ADU motor (lower). The central roller is driven by the ADU motor (lower) through the belt.  
MD-0101 MECHANICAL DESCRIPTION  
4 - 2  
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5. CIRCUIT DESCRIPTION  
5.1 PWA Block Diagram  
ADU PWA  
+24V  
1
2
3
4
5
6
1
EXM-D  
EXM-B  
9
8
7
6
4
5
2
3
EXMA  
EXMB  
EXMC  
EXMD  
A
A1  
A0  
B1  
B0  
ADU motor  
2
AB  
B
(
)
Upper  
IC2  
3
EXM-C  
Motor driver  
4
EXM-A  
BB  
VREF  
SP  
5
ADUCOVSW  
ADUFU  
12  
11  
+5V  
1
2
6
R6  
R7,R8  
ADU cover open switch  
ADU paper jam sensor  
7
ADCNT  
SG  
SG  
PFC  
PWA  
8
SG  
9
+5V  
1
2
3
SG  
10  
11  
14  
15  
14  
15  
ADUFL  
(
)
Lower  
+5V  
NC  
FDM-A  
9
8
7
6
4
5
2
3
A
A1  
A0  
B1  
B0  
FDM-C  
FDM-B  
FDM-D  
1
2
3
AB  
B
IC1  
SG  
ADU paper jam sensor  
Motor driver  
(
)
Upper  
+5V  
BB  
VREF  
12  
SP  
11  
+5V  
+24V  
1
2
3
4
+24V  
+24V  
R14 R15,R16  
1
2
3
4
5
6
FDMA  
FDMB  
FDMC  
FDMD  
PFC  
PWA  
ADU motor  
PG  
PG  
(
)
Lower  
ADU 05-01-01  
The ADU PWA has the motor driving IC only and the other signals pass through the PWA.  
IC1 and IC2 are driver IC’s for the stepping motors and drive the ADU motors (upper/lower) on the output  
side according to the input signals. IC1 drives the ADU motor (lower), and IC2 the ADU motor (upper).  
Vref is the input to determine the value of the current which flows through each motor. The input voltage  
there determines the load (current value) to the motor.  
ADCNT is a signal which detects connection of the ADU and connected to GND. When its connector is  
attached, the signal goes LOW so that the copier can confirm its connection.  
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MD-0101 CIRCUIT DESCRIPTION  
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5.2 Meaning of Signals  
Signal name  
ADUFL  
Part name  
ADU paper jam  
sensor (Lower)  
ADU paper jam  
sensor (Upper)  
Functional description  
Detects the transport of  
paper (Lower)  
Status  
Note  
High: Paper present Photo sensor  
ADUFU  
Detects the transport of  
paper (Upper)  
High: Paper present Photo sensor  
ADUCOVSW ADU cover  
open switch  
Detection of cover  
High: Open  
Push switch  
open/close status during  
jam processing, etc.  
Drives the roller to transport  
paper (Upper)  
EXMA-D  
FDMA-D  
ADU motor  
(Upper)  
-
-
PM type  
pulse motor  
PM type  
ADU motor  
(Lower)  
Drives the roller to transport  
paper (Lower)  
pulse motor  
The ADU cover open switch is a switch which detects the open or close state of the cover. A push switch  
is used for the switch. The signal goes LOW when the cover is closed, and HIGH when it is open.  
The ADU paper jam sensor (upper/lower) detects the presence or absence of paper in the transfer path.  
Photo sensors are used for the sensors. When paper passes, the sensor arm in the transfer path is  
pressed to turn on the sensor.  
The ADU motor (lower) and ADU motor (upper) are 2-phase excitation PM type pulse motors (stepping  
motors) and operate according to the drive signals from the driver IC’s (IC1, IC2).  
MD-0101 CIRCUIT DESCRIPTION  
5 - 2  
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5.3 Timing Chart  
ADU 05-03-01  
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6. DISASSEMBLY AND REPLACEMENT  
[A] ADU hinge cover F/R  
1. Remove 2 screws and detach ADU hinge cover  
F.  
Screw  
ADU hinge cover F  
223  
Screw  
Fig. 6-1  
2. Remove 2 screws and detach ADU hinge cover  
R.  
ADU hinge  
cover R  
Screw  
224  
Screw  
Fig. 6-2  
[B] ADU paper guide assembly  
1. Pull ADU release lever to release one hook and  
open ADU.  
ADU release lever  
ADU  
225  
Fig. 6-3  
ADU paper guide assembly  
Hook  
2. Release 2 hooks and remove ADU paper guide  
assembly.  
226  
Fig. 6-4  
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[C] ADU  
1. Detach ADU hinge cover F. (See Fig. 6-1)  
2. Detach ADU hinge cover R. (See Fig. 6-2)  
3. Remove one screw and detach harness fixing  
plate.  
Screw  
Harness fixing plate  
227-1  
Fig. 6-5  
4. Remove one screw, detach the ground wire and  
the connector.  
Screw  
Connector  
Ground wire  
227-2  
Fig. 6-6  
5. Remove stopper from ADU hinge F.  
Snap pin  
ADU hinge F  
228  
Fig. 6-7  
6. Open ADU, remove one screw, and remove  
plate A.  
Screw  
Plate A  
ADU  
229  
Fig. 6-8  
MD-0101 DISASSEMBLY AND REPLACEMENT  
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7. Release one hook and detach the wire.  
8. Release 2 hinges and remove ADU.  
Wire  
ADU  
230  
Fig. 6-9  
Screw  
[D] ADU cover  
Wire  
ADU hook cover R  
1. Detach ADU hinge cover F. (See Fig. 6-1)  
2. Detach ADU hinge cover R. (See Fig. 6-2)  
3. Remove ADU. (See Fig. 6-5 to 6-9)  
4. Remove 2 screws, release one hook and wire,  
and detach ADU hook cover R.  
Hook  
231  
Fig. 6-10  
5. Release 2 hooks, detach one connector, and  
remove ADU cover open sensor.  
ADU cover  
open sensor  
Connector  
Hook  
232  
Fig. 6-11  
Screw  
6. Remove 4 screws and detach ADU cover.  
Screw  
ADU cover  
233  
Fig. 6-12  
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Clamp  
Screw  
[E] ADU PWA  
1. Detach ADU hinge cover F. (See Fig. 6-1)  
2. Detach ADU hinge cover R. (See Fig. 6-2)  
3. Remove ADU. (See Fig. 6-5 to 6-9)  
4. Detach ADU cover. (See Fig. 6-10 to 6-12)  
5. Remove 4 screws, release the harness from the  
clamp, and detach PWA cover.  
PWA cover  
Screw  
Clamp  
234  
Fig. 6-13  
6. Detach all the connectors from ADU PWA, re-  
lease 4 locking supports, and remove ADU  
PWA.  
Locking support  
ADU PWA  
235  
Fig. 6-14  
CN216  
[F] ADU motor  
1. Detach ADU hinge cover F. (See Fig. 6-1)  
2. Detach ADU hinge cover R. (See Fig. 6-2)  
3. Remove ADU. (See Fig. 6-5 to 6-9)  
4. Detach ADU cover. (See Fig. 6-10 to 6-12)  
5. Detach one connector from ADU PWA (CN216),  
remove 2 screws, remove ADU motor by slid-  
ing in the direction of the arrow.  
ADU motor  
Connector  
ADU motor  
Screw  
Note: Apply 0.1g of GREASE (X5-6020) to the  
gear tooth surface.  
236-1  
Fig. 6-15  
MD-0101 DISASSEMBLY AND REPLACEMENT  
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[G] ADU feed roller shaft upper/clutch 08S018-06CL  
1. Detach ADU hinge cover F. (See Fig. 6-1)  
2. Detach ADU hinge cover R. (See Fig. 6-2)  
3. Remove ADU paper guide assembly.  
(See Fig. 6-3 and 6-4)  
4. Remove ADU. (See Fig. 6-5 to 6-9)  
5. Detach ADU cover. (See Fig. 6-10 to 6-12)  
6. Detach PWB cover. (See Fig. 6-13)  
7. Remove 2 screws and remove ADU release le-  
ver.  
ADU release lever  
Screw  
236-2  
Fig. 6-16  
8. Release Spring, remove one screw, and remove  
ADU release hook R.  
ADU release  
hook R  
Screw  
Spring  
237  
Fig. 6-17  
ADU PWB  
9. Detach one connector from ADU PWA (CN216).  
10. Remove 4 screws, release one clamp, and re-  
move ADU motor bracket upper.  
CN216  
Clamp  
Harness  
238  
Screw  
Screw  
ADU motor bracket upper  
Fig. 6-18  
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11. Detach the E-ring, and remove clutch 08S018-  
06CL and bushing.  
E-ring  
Bushing  
Clutch 08S018-06CL  
239  
Fig. 6-19  
ADU feed roller  
shaft upper  
12. Detach stop ring, and remove bushing and ADU  
feed roller shaft upper.  
Bushing  
240  
Stop ring  
Pin  
Fig. 6-20  
Pulley  
[H] ADU feed roller shaft middle  
1. Detach ADU hinge cover F. (See Fig. 6-1)  
2. Detach ADU hinge cover R. (See Fig. 6-2)  
3. Remove ADU paper guide assembly.  
(See Fig. 6-3 and 6-4)  
Pulley  
Pin  
4. Remove ADU. (See Fig. 6-5 to 6-9)  
5. Detach ADU cover. (See Fig. 6-10 to 6-12)  
6. Detach PWA cover. (See Fig. 6-13)  
7. Remove ADU PWA. (See Fig. 6-14)  
8. Detach stop ring and remove pulley and timing  
belt.  
Stop ring  
Timing belt  
Pulley  
Stop ring  
241  
Fig. 6-21  
Note: Be sure to insert the pins when attaching.  
MD-0101 DISASSEMBLY AND REPLACEMENT  
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ADU feed roller  
shaft middle  
9. Detach stop ring, remove 2 bushings, and re-  
move ADU feed roller shaft middle.  
Stop ring  
Bushing  
Bushing  
242  
Fig. 6-22  
[I] ADU feed roller shaft lower/clutch 08S018-06CL  
1. Detach ADU hinge cover F. (See Fig. 6-1)  
2. Detach ADU hinge cover R. (See Fig. 6-2)  
3. Remove ADU paper guide assembly.  
(See Fig. 6-3 and 6-4)  
ADU PWA  
ADU motor  
bracket lower  
4. Remove ADU. (See Fig. 6-5 to 6-9)  
CN215  
5. Detach ADU cover. (See Fig. 6-10 to 6-12)  
6. Detach PWB cover. (See Fig. 6-13)  
7. Remove timing belt. (See Fig. 6-21)  
8. Detach one connector from ADU PWA (CN215).  
9. Remove 4 screws, release one clamp, and re-  
move ADU motor bracket lower.  
Clamp  
Harness  
Connector  
Screw  
243  
Fig. 6-23  
Bushing  
ADU feed roller  
shaft lower  
10. Detach the E-ring, remove clutch 08S018-06CL  
and 2 bushings, and remove ADU feed roller  
shaft lower.  
Clutch 08S018-06CL  
Bushing  
ADU feed roller  
shaft lower  
E-ring  
244  
Fig. 6-24  
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MD-0101 DISASSEMBLY AND REPLACEMENT  
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