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OFFSET TRAY
MJ-5002
File No. 31100015
General Precautions for Installation/Servicing/Maintenance for the MJ-5002
The installation and service should be done by a qualified service technician.
1. When installing the MJ-5002 to the Plain Paper Copier, be sure to follow the instructions described in
the "Unpacking/Set-Up Procedure for the MJ-5002" booklet which comes with each unit of the
MJ-5002.
2. The MJ-5002 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 MJ-5002, 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 MJ-5002, consumable parts and packing materials, it is rec-
ommended that the relevant local regulations/rules should be followed.
12. After completing installation, servicing and maintenance of the MJ-5002, return the MJ-5002 to its
original state, and check operation.
Copyright 2000
TOSHIBA TEC CORPORATION
CONTENTS
1. SPECIFICATIONS ...................................................................................................... 1-1
2. OUTLINE .................................................................................................................... 2-1
2.1 Names of Various Components ......................................................................................... 2-1
2.2 Layout of Electrical Parts .................................................................................................. 2-2
2.3 Harness Connection Diagram ............................................................................................ 2-3
2.4 Board Assembly ............................................................................................................... 2-4
3. OPARATIONAL DESCRIPTION ................................................................................ 3-1
3.1 General Operation ............................................................................................................. 3-1
3.2 Block Diagram .................................................................................................................. 3-1
3.3 Detection of Abnormal Status ........................................................................................... 3-2
3.3.1 Cover open/Close detection ................................................................................... 3-2
3.3.2 Paper jam detection ............................................................................................... 3-2
3.3.3 Stacker full detection ............................................................................................. 3-2
3.4 Flow Charts ...................................................................................................................... 3-3
4. MECHANICAL DESCRIPTION.................................................................................. 4-1
4.1 Paper Feed System .......................................................................................................... 4-1
4.2 Paper Transport ................................................................................................................. 4-1
4.3 Flap Function .................................................................................................................... 4-1
4.4 Drive System .................................................................................................................... 4-2
5. CIRCUIT DESCRIPTION ........................................................................................... 5-1
5.1 PWA Block Diagram ......................................................................................................... 5-1
5.2 Meaning of Signals ........................................................................................................... 5-2
5.3 Timing Charts ................................................................................................................... 5-3
6. DISASSEMBLY AND REPLACEMENT ..................................................................... 6-1
October 2000