Oki 3390, Microline Printer, 3391 specifications

Page 62

3.3.1Printhead

(1)Open the access over.

(2)Pull up and rotate the head clamp 1 to unclamp the printhead 2 as shown fig. 3.3.1.

(3)Disconnect the printhead 2 from PC connector 3.

(4)To install, follow the removal steps in the reverse order.

Notes on installation:

(1)Insert the printhead 2 into the PC connector 3 while pushing it against the carriage frame

4.

(2)The head clamp 1 must surely be sandwiched between printhead 2 and carriage frame 4 as shown fig. 3.3.2.

(3)Be sure to check the gap between platen and printhead (See 4).

(4)Be careful not to touch the print head while it is very hot.

1

4

2

2

1

Figure 3.3.1

Figure 3.3.2

2

4

1

3

3 – 5

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Contents Printer Preface Table of Contents Appendix PCB Layout Spare Parts List Adjustment Cleaning and LubricationTroubleshooting and Repair Configuration Configuration Standard Printer ConfigurationOptions Page Theory of Operation Theory of Operation Electrical OperationAddress AD-BUS LSI MPU Clock CS1 MPURAS CASCG-N Eeprom Read cycle timing ReadWRL MPU Reset Nbsy Head Drive Timing Chart Pin 5~20 Time Page Hall AMP Input Output SPU SPV SPW Open Utility Mode PHASE-A PHASE-B Forward Reverse LSI Optd Opck NPA2 Oprd Optxd Opclk YES Powlev Temp Stop 119C Mode up Mode down Uses of output voltages and signals are described below Mechanical Operation Page When printing Page Page Page Range from 5 to Page Ribbon cartridge Drive gear Ink tank Page TOP RearBottom Bottom OFFTOP Page Paper Idle gear Change gear Pull tractor Drive gear Idle gear Platen gear Push tractor Page Page Bottom Open TOP Close Rear Bottom Rear Page Page Page Platen Ribbon protector Printhead Carriage frame assembly Rear TOP Bottom SW2 SW1 Page Park ASSEMBLE/DISASSEMBLE ASSEMBLY/DISASSEMBLY Precaution for Parts ReplacementService Tools Service toolsDisassembly/Reassembly Procedure Printer unitPage Page Page Page Page Page Page Page Page Claw Page Page Sensor Lock a Page Page Page Page Page Page Page Page Page Periodic Maintenance Adjustment Specification Drawing Measured With Adjust lever Confirm followings Friction Rotation of the push To confirm Tractor Ribbon feed To confirm Engagement Troubleshooting Flowcharts Cleaning and Lubrication CleaningCarriage shaft Lubrication Spare Parts List Items to Check Before Repair Troubleshooting and RepairTroubleshooting Table Printer mode display Lamp Display1/2 2/2 Page Printhead Signal Connector pin number Connection Circuit Check for Printhead and SP/LF MotorLF1 LF2 LF3 LF4SP-U SP-V SP-WTroubleshooting flow chart CN2 Page Page Pull up roller cover Platen Paper Ribon Protector Page Page Page Page Page Page SSD TXDRXD DTRPage Appendix a Appendix a BIT Image Graph is DOT Density Appendix aPCB Layout PCB listAppendix B Spare Parts List Upper Cover Assy Description Qty Remarks Printer General Assy Leop 1716 2931 Printer Unit Printer Unit Carriage Assy Carriage Option Assy Option Spare Parts LXHI-PCB RS232 I/F Appendix C Appendix C RS-232C Serial Interface Board General Circuit Description Operation DescriptionElement Description RAM If WRROM Page Communication Procedure Flowchart Mode aFigure C-2-3 Troubleshooting Troubleshooting FlowchartBefore Repairing a Fault Figure C-3-1 Figure C-3-3 Figure C-3-5 Local Test RTS CTS SSD DTR DSRPage People to People Technology
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3390, Microline Printer, 3391 specifications

The Oki 3391 Microline Printer embodies precision and versatility, making it an essential tool for various business applications. Built with a range of powerful features, this dot matrix printer excels in environments that require consistent, reliable printing. The Oki 3391 is a member of the Oki 3390 series, renowned for its robust design and technological advancements.

One of the standout characteristics of the Oki 3391 is its impressive printing speed. The printer operates at a rate of up to 550 characters per second, significantly boosting productivity in busy office settings. This speed allows users to handle high-volume print jobs efficiently, ensuring deadlines are consistently met. Additionally, the Oki 3391 offers page mode printing, which is ideal for multi-part forms, making it a popular choice for invoicing and record-keeping applications.

The Oki 3391 utilizes advanced print head technology, featuring a 24-pin mechanism that delivers high-quality text and graphics. This ensures that printed documents have clear, sharp details while maintaining a professional appearance. The printer supports various paper types and media sizes, from plain paper to labels and envelopes, enhancing its flexibility to meet diverse printing needs.

In terms of connectivity, the Oki 3391 is equipped with multiple interface options, including parallel and USB connections, facilitating easy integration into existing office setups. This versatility enables users to connect the printer to various devices, such as PCs and terminals, without hassle. Furthermore, the printer offers a range of emulations, ensuring compatibility with different software applications.

Durability and reliability are fundamental qualities of the Oki 3391. Designed to withstand high usage, it features robust components and is built for long-term operation, minimizing downtime. Its energy efficiency also aligns with modern environmental standards, making it a responsible choice for businesses looking to reduce their carbon footprint.

Overall, the Oki 3391 Microline Printer, part of the 3390 series, stands out for its speed, print quality, and durability. Its ability to handle various printing tasks while providing consistent performance makes it an invaluable asset for businesses that value efficiency and reliability in their document processing. Whether printing multi-part forms or daily reports, the Oki 3391 delivers exceptional results, making it a top contender in the dot matrix printer market.
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