Lexmark 4090-001 manual Encoder Sensor Test

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4090-001

Encoder Sensor Test

This test disables the printer motors to allow you to manually move the carrier to verify the encoder is working correctly.

To run the test:

1.Turn the printer off and place a two pin jumper on connector J6 as shown below. (Pins 1 & 2)

2.Press and hold the Paper Feed button while turning the printer on, to start the test. Release the button when the printer completes POST. Turn power off or unplug the printer to stop the test.

The power light flashes as the carrier is moved. The busy light remains on for right to left, and blinks for left to right movement. With no carrier movement, the busy light indicates the direction of the last move. If the test fails, power off the printer and remove the carrier assembly without unplugging the printhead cable.

Power on the printer and check for +5 V dc at pins 1, 2 and 3 of the encoder card connector.

1.If voltage is not present, check the printhead cable for opens to the encoder card. If the printhead cable is good, replace the system board.

2.If voltage is present, check the sensor on the encoder card by monitoring pin 3 of the encoder card connector as you pass a piece of paper through the sensor. The voltage should go from +5 V dc to 0 V dc. Turn the power off and back on to make this check again. If the voltage at pin 3 does not change, replace the encoder card. If the symptom remains, replace the printhead cable.

Diagnostic Aids 3-2

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Contents 4090-001 4090-001 Contents Connector Locations Preventive Maintenance Preface Safety InformationSicherheitshinweise Consignes de SécuritéNorme di sicurezza Pautas de Seguridad SikkerhedsoplysningerInformações de Segurança Chinese Safety Information Korean Safety Information General Information Resolution and Print SpeedPower Consumption Maintenance ApproachAbbreviations Unique Tools Required For ServiceStart Diagnostic InformationPower-On Self Test Post Sequence Error Indicator TableSymptom Action Post Symptom TableCarrier Transport Problems Symptom Tables4090-001 Paper Feed Problems Service Checks Envelope Feed Service CheckFirst Print Line Service Check Maintenance Station Service Check Paper Feed Service Check Perform the ’Paper Path Service Check’ on Paper Path Service Check Power Service Check Parallel Port Service CheckPrint Quality Service Check Do not lubricate the carrier guide rod or Perform the ’Encoder Sensor Test’ on page 3-2. If Transport Service CheckDiagnostic Aids Encoder Sensor Test Initialize Error Log Paper Sensor Test Parallel Port Test Print Nvram Contents Test Handling ESD-Sensitive Parts Repair InformationAdjustments Removal ProceduresReleasing Plastic Latches Carrier Belt Removal Base Assembly RemovalCarrier Frame Assembly Removal Carrier Transport Motor Removal Encoder Strip Removal Code Module RemovalEdge Guide Asm and Paper Load Shaft Removal Encoder Card RemovalFeed Arm Assembly Removal Exit Drive Belt RemovalExit Roller Removal Gutter Pad Removal Front Cover RemovalInside Idler Gears Removal Large Feed Roll Removal Large Outside Gear Removal Left Side Frame Assembly Removal Manual Insert Tray Removal Maintenance Station Assembly RemovalMaintenance Wipers and Caps Removal Mid Frame Assembly RemovalPaper Feed Motor Removal Paper Guide and EOF Flag Assembly Removal4090-001 Power Supply Removal Paper Load Door RemovalPick Roll Hub, Shaft and Envelope Bucklers Removal Printhead Cable, Cradle & Paper Deflector Removal 4090-001 Printhead Rubber Backer Removal Printhead Carrier Assembly RemovalRear Cover Removal Right Side Frame Assembly RemovalSmall Feed Roll Shaft, Rollers & Paper Flap Removal Star Roller RemovalSystem Board Removal Connector Locations System Board Connectors Connector Connector Names Encoder Card ConnectorLubrication Specifications Preventive MaintenanceParts Catalog How To Use This Parts Catalog Assembly 1 Covers Asm Part Units Description Index Number Assembly 2 Frames 4090-001 Assembly 3 Paper Feed 4090-001 Assembly 4 Electronics 70G2695 System Board, W/O Code Module Assembly 4 Electronics 4090-001 Assembly 5 Carrier 4090-001 Assembly 6 Carrier Transport 4090-001 Assembly 7 Sheet Feeder 4090-001 Assembly 8 Maintenance Station 4090-001 Post Index4090-001

4090-001 specifications

The Lexmark 4090-001 is a robust and reliable printer that caters to the needs of high-volume printing environments. Known for its durability and efficiency, the Lexmark 4090-001 is often utilized in commercial settings where performance and quality are paramount.

One of the standout features of the Lexmark 4090-001 is its print speed, which is capable of delivering up to 120 characters per second. This rapid output makes it ideal for organizations that require fast and efficient printing solutions for invoices, reports, and other documents. Its high-speed performance does not compromise on the quality of the print; it produces clear and crisp text output, ensuring that important documents maintain a professional appearance.

The Lexmark 4090-001 utilizes a 24-pin dot matrix technology, which enhances the clarity and precision of printed characters and graphics. This technology is particularly beneficial for printing multi-part forms, where the device can effectively create multiple copies at once without sacrificing quality. The printer is engineered to handle a variety of media types, including labels, envelopes, and continuous forms, making it versatile and adaptable to diverse business needs.

Another characteristic of the Lexmark 4090-001 is its extensive connectivity options. It supports parallel and serial interfaces, allowing it to be easily integrated into existing network systems. This feature ensures that multiple users can access the printer simultaneously, boosting productivity in the workplace.

User-friendly design elements, such as a simple control panel and easy-loading mechanisms for paper, enhance operational efficiency. Maintenance is also simplified, which limits downtime and ensures that users can focus on their tasks without dealing with complex printer issues.

Furthermore, the Lexmark 4090-001 is built with longevity in mind. Its sturdy construction is designed to withstand the rigors of daily use, making it a cost-effective solution for businesses looking to invest in long-term printing capabilities.

In summary, the Lexmark 4090-001 combines high-speed printing, advanced dot matrix technology, versatile media handling, and user-friendly features, all wrapped in a robust design. It is an admirable choice for businesses that require consistent performance and exceptional print quality in a demanding work environment.
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