Oki MJ-1038 User manual

MC770 / MC770+ / MC780 / MC780+
MPS3537mc / MPS3537mc+
MPS4242mc / MPS4242mc+
MJ-1038 Inner Finisher
Service Manual
060313A

45372301TH Rev.1 ii /
Oki Data CONFIDENTIAL
Document Revision History
Rev.No. Date
Corrected items Person in
charge
No. Page Description of change
1 2013-04-10 ISSUE P2E1 T. Asaba

45372301TH Rev.1 iii /
Oki Data CONFIDENTIAL
TRADEMARKS
• MolykoteisaregisteredtrademarkofDowCorningCorporation.
• Othercompanynamesandproductnamesinthismanualarethetrademarksoftheirrespective
companies.
© 2013 OKI DATA CORPORATION All rights reserved
Under the copyright laws, this manual cannot be reproduced in any form without prior written
permission of OKI DATA CORPORATION.

45372301TH Rev.1 iv /
Oki Data CONFIDENTIAL
General Precautions for Installation/Servicing/Maintenance for
MJ-1038
The installation and service shall be done by a qualified service
technician.
1. When installing the MJ-1038, be sure to follow the instructions described in the “Unpacking/
Set-Up Procedure for the MJ-1038”.
2. The MJ-1038 should be installed by an authorized/qualified person.
3. The Finisher is quite heavy; MJ-1038 weighs approximately 8.3 kg (18.29 lb.), therefore pay
full attention when handling it.
4. Before starting installation, servicing or maintenance work, be sure to turn OFF and unplug
the equipment first.
5. Be sure to fix and plug in the power cable securely after the installation so that no one trips
over it.
6. The equipment shall be installed near the socket outlet and shall be easily accessible.
7. Unplug the power cable and clean the area around the prongs of the plug and socket outlet
once a year or more. A fire may occur when dust lies on this area.
8. When servicing or maintaining the MJ-1038, be careful about the rotating or operation
sections such as gears, pulleys, sprockets, cams, belts, etc.
9. 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, harnesses to the wrong places.
10.Basically, the machine should not be operated with any parts removed or disassembled.
11. When servicing the equipment with the power turned ON, be sure not to touch live sections
and rotating/operating sections.
12.Delicate parts for preventing safety hazard problems (such as switches, sensors, etc. if any)
should be handled/installed/adjusted correctly.
13.Tools and instruments
- Use designated jigs and tools.
- Use recommended measuring instruments or equivalents.
14.Use the wrist band to avoid static electric shock by touching the ungrounded metallic parts.
The PC board must be stored in antistatic envelope 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 cable plug of the equipment and make sure
that there is no uninsulated charged objects in the vicinity.
15.For the recovery and disposal of used MJ-1038, consumable parts and packing materials,
follow the relevant local regulations/rules.

45372301TH Rev.1 v /
Oki Data CONFIDENTIAL
[1]
[2]
16.After completing installation, servicing and maintenance of the MJ-1038, return the MJ-1038
to its original state, and check operation.
17. When the MJ-1038 is removed from the equipment due to malfunction or other reasons but
no substitute machine is to be installed, be sure to remove all the installation hardware from
the equipment as well.
18.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.
[1] Identification label
[2] Warning for elevating behavior of tray

45372301TH Rev.1 vi /
Oki Data CONFIDENTIAL
CONTENTS
1. SPECIFICATIONS, ACCESSORY AND CONSUMABLES ...............................1-1
1.1 Specifications............................................................................................... 1-1
1.2 Accessory ....................................................................................................1-3
1.3 Consumables ...............................................................................................1-4
2. GENERAL DESCRIPTION ................................................................................2-1
2.1 Main Components........................................................................................ 2-1
2.2 Sectional View .............................................................................................2-2
2.3 Electric Parts Layout ....................................................................................2-4
2.4 Symbols and Functions of Various Components .........................................2-6
2.5 Diagram of Signal Blocks.............................................................................2-8
3. DESCRIPTION OF OPERATIONS.....................................................................3-1
3.1 Basic Operations..........................................................................................3-1
3.1.1 Specifications............................................................................................................3-1
3.1.2 Transport drive system - General description.......................................................... 3-2
3.1.3 Jam detection .......................................................................................................... 3-9
4. DISASSEMBLY AND INSTALLATION ..............................................................4-1
4.1 Disassembly and Replacement of Covers ...................................................4-1
4.1.1 Upper cover ..............................................................................................................4-1
4.1.2 Front cover................................................................................................................4-1
4.1.3 Rear cover ............................................................................................................... 4-2
4.2 Disassembly and Replacement of Sensors and Switches ...........................4-3
4.2.1 Guide upper ASSY................................................................................................... 4-3
4.2.2 Guide rear ASSY ..................................................................................................... 4-3
4.2.3 Entrance transport sensor (S1)................................................................................ 4-6
4.2.4 Exit transport sensor (S2)........................................................................................ 4-6
4.2.5 Front alignment plate home position sensor (S4).....................................................4-7
4.2.6 Rear alignment plate home position sensor (S5) .....................................................4-7
4.2.7 Ejector home position sensor (S7) .......................................................................... 4-8
4.2.8 Ejector encoder sensor (S8)...................................................................................4-10
4.2.9 Stapler paper sensor (S14).....................................................................................4-13
4.2.10 Stack home position sensor (S9) ...........................................................................4-15
4.2.11 Paper support home position sensor (S6)..............................................................4-17
4.2.12 Door switch (SW2)................................................................................................. 4-20
4.2.13 Stacker tray lower limit switch (SW1)..................................................................... 4-20
4.2.14 Lever path home position sensor (S15) ................................................................. 4-21
4.3 Disassembly and Replacement of motors..................................................4-22
4.3.1 Entrance transport motor (M1)............................................................................... 4-22
4.3.2 Exit transport motor (M2)....................................................................................... 4-22
4.3.3 Front alignment motor (M4) ................................................................................... 4-23
4.3.4 Rear alignment motor (M5).................................................................................... 4-25
4.3.5 Paddle motor (M3) ................................................................................................. 4-27
4.3.6 Paper support motor (M6) ..................................................................................... 4-28
4.3.7 Ejector motor (M7) ................................................................................................. 4-31
4.3.8 Stacker motor (M8) ................................................................................................ 4-34
4.3.9 Lever path motor (M10).......................................................................................... 4-35

45372301TH Rev.1 vii /
Oki Data CONFIDENTIAL
4.4 Disassembly and Replacement of transport system ..................................4-37
4.4.1 Entrance transport roller ........................................................................................ 4-37
4.4.2 Exit Transport roller................................................................................................ 4-38
4.4.3 Exit roller (PM)....................................................................................................... 4-39
4.4.4 Sub paddle............................................................................................................. 4-41
4.4.5 Main paddle (PM) .................................................................................................. 4-42
4.4.6 SCU paddle............................................................................................................ 4-43
4.5 Disassembly and Replacement of Others................................................. 4-45
4.5.1 Finisher control PC board ASSY............................................................................ 4-45
4.5.2 Finisher control PC board ...................................................................................... 4-45
4.5.3 Stapler ................................................................................................................... 4-46
5. ADJUSTMENT ...................................................................................................5-1
5.1 General description......................................................................................5-1
6. TROUBLESHOOTING .......................................................................................6-1
6.1 Troubleshooting............................................................................................6-1
6.2 Alarm.......................................................................................................... 6-14
7. PREVENTIVE MAINTENANCE (PM) / FIRMWARE UPDATE .......................... 7-1
7.1 PM Parts ...................................................................................................... 7-1
7.2 Consumables and Duration.......................................................................... 7-1
7.2.1 Finisher section.........................................................................................................7-1
7.3 Maintenance by Customers ......................................................................... 7-1
7.4 Maintenance and Inspection Points ............................................................. 7-1
7.5 Grease .........................................................................................................7-2
7.6 Firmware Update..........................................................................................7-2
8. ELECTRIC CIRCUIT ..........................................................................................8-1
8.1 Harness Diagram .........................................................................................8-1
8.2 Circuit Diagram ........................................................................................... 8-4
8.3 PC Boards................................................................................................... 8-9
8.4 Electric Signals .......................................................................................... 8-10
8.4.1 Finisher section.......................................................................................................8-10

45372301TH Rev.1 1-1 /
Oki Data CONFIDENTIAL
1. SPECIFICATIONS, ACCESSORY AND CONSUMABLES
1.1 Specifications
• Product Type Inner Finisher (1 trays)
• Paper Stacking Device Stationary Tray
• Paper Size A4, A5, B5, Executive, Folio, LG13", LG13.5", LG14", LT, Statement,
16K (184 × 260, 195 × 270, 197 × 273)
• Paper Basis Weight 64 - 220 g/m2(17 lb. Bond to 58 lb. Bond)
• Stacking Mode Simple, Offset, Staple and composite
• Dimensions W386.7 × D303.6* × H212 (mm)
  * without stacker tray.
• Gross Weight 8.3 kg (18.29 lb)
• Power Supply DC24V±10% and DC5V±5% supplied from the main equipment.
• Power Consumption DC24V 40W or less
5V 2.6W or less
• Stacking Type Facedown
• Stacking Height with
Operation Mode Sheets loaded Remarks
Non-Sort, Offset Minimum 500 sheets, or 71 mm STACK TRAY movement When using 80 g/m2
Staple STACK TRAY movement 71 mm, up to 20 continuous batches When using 80 g/m2
- Considered full when STACK TRAY reaches lower limit in excess of specifications noted here.
- Exceeding maximum number of continuous batches of staples is not covered by the warranty.
- The Tray movement is a 71 mm motion vertically from the Home position.
Fig. 1-1
71mm

45372301TH Rev.1 1-2 /
Oki Data CONFIDENTIAL
• Stapling Position
(45°)
5 ±2 mm5 ±2 mm
[1]
[1] Transport direction
Fig. 1-2
• Paper Size for stapling
Stapling Position Paper Size
Single A4,B5,Executive,Folio,LG13",LG13.5",LG14",LT,16K(184×260,195×
270, 197 × 273)
Stapling is not available for paper in sizes other than the above.
• Paper Basis Weight for stapling  64 - 220 g/m2
• Number of sheets that can be stapled
Paper Size 64 - 82 g/m2Paper 83 - 104 g/m2Paper 105 - 220 g/m2
Folio,LG13",LG13.5",LG14" 30 15 2 (Cover paper)
A4, B5, Executive, LT, 16K (184 × 260,
195 × 270, 197 × 273)
50 30 2 (Cover paper)
• Staple Loading   exclusive cartridge
• Manual Stapling   Function is not included

45372301TH Rev.1 1-3 /
Oki Data CONFIDENTIAL
1.2 Accessory
Symbol Name Quantity
B BKT MOUNT LEFT 1pc
D BKT MOUNT RIGHT 1pc
EStacker tray 1pc
FFilm 1 sheet
GFilm 2 sheets
aScrew: M3x6 6pc
fScrew: M4x6 2pc
gScrew: M3x10 2pc
Unpacking Instruction 1set
Fig. 1-3