PREFACE

This manual describes functions, theory of electrical and mechanical operations, maintenance, and repair of DLQ-3000.

The instructions and procedures included herein are intended for the experience repair technician, and attention should be given to the precautions on the preceding page. The chapters are organized as follows:

CHAPTER 1. PRODUCT DESCRIPTION

Provides a general product overview, lists specifications, and illustrates the main components of the printer.

CHAPTER 2. OPERATING PRINCIPLES

Describes the theory of printer operation.

CHAPTER 3. DISASSEMBLY AND ASSEMBLY

Includes a step-by-step guide for product disassembly and assembly.

CHAPTER 4. ADJUSTMENT

Includes a step-by-step guide for adjustment.

CHAPTER 5. TROUBLESHOOTING

Provides Epson-approved techniques for adjustment.

CHAPTER 6. MAINTENANCE

Describes preventive maintenance techniques and lists lubricants and adhesives required to service the equipment.

APPENDIX

Describes connector pin assignments, circuit diagrams, circuit board component layout and exploded diagram.

The contents of this manual are subject to change without notice.

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Epson DLQ-3000 service manual Preface

DLQ-3000 specifications

The Epson DLQ-3000 is a high-performance dot matrix printer that stands out for its reliability and efficiency, making it an ideal choice for businesses that require high-volume printing. Known for its rugged build and robust performance, this printer excels in production environments where continuous printing is essential.

One of the key features of the DLQ-3000 is its print speed. The printer can achieve a speed of up to 550 characters per second, ensuring that printed materials are produced rapidly. This speed is particularly beneficial for environments such as warehouses, shipping departments, and logistics firms, where time is of the essence.

The DLQ-3000 utilizes a 24-pin print head, which produces sharp, high-quality prints. The 24-pin technology allows for greater detail and clarity compared to standard 9-pin printers. This feature is particularly useful for printing barcodes, forms, and invoices, where precision is critical. The printer also offers a maximum print width of 136 columns, accommodating a variety of forms and documents.

Another notable characteristic of the Epson DLQ-3000 is its versatility. It supports various media types and sizes, ranging from multi-part forms to labels. This wide adaptability allows businesses to streamline their operations by using a single printer for multiple printing tasks.

In terms of connectivity, the DLQ-3000 features parallel and serial interfaces, as well as an optional USB interface. This multi-connectivity ensures compatibility with various devices, making it easy to integrate into existing systems. The printer's built-in emulations, including ESC/P and IBM Proprinter, facilitate seamless installation and operation across diverse computing environments.

Durability is another hallmark of the Epson DLQ-3000. Designed for high-duty cycles, it can handle heavy workloads without compromising performance. Its long-lasting ribbon also contributes to reduced operating costs, as users can expect fewer replacements, which is a vital factor for businesses mindful of their expenditure.

Operator convenience is enhanced with features such as easy ribbon replacement and an easy-to-use control panel, making the DLQ-3000 user-friendly.

In summary, the Epson DLQ-3000 is an exceptional choice for businesses seeking a reliable, high-speed dot matrix printer. Its combination of speed, versatility, and durability ensures it delivers consistent performance, making it a staple in high-demand printing environments.