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Star Micronics NX-1000 series User Manual

Star Micronics NX-1000 series
151 pages
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DOT MATRIX PRINTER
NX-1000SERIES
LC-10SERIES
TECHNICAL MANUAL
[ NINTH EDITION ]

Table of Contents

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Star Micronics NX-1000 series Specifications

General IconGeneral
BrandStar Micronics
ModelNX-1000 series
CategoryPrinter
LanguageEnglish

Summary

Introduction

Printer Model and Manual Overview

Introduces the printer models covered and the manual's section breakdown.

Chapter 1: General Specifications

Parallel Type Specifications

Details the printing, paper, and interface specifications for parallel type printers.

Commodore Type Specifications

Details printing, character sets, and interface specs for Commodore type printers.

Printer Physical and Environmental Details

Covers printer physical dimensions, weight, power, environment, print head, and ribbon.

External Appearance and Composition

Describes the printer's external parts and internal composition diagrams.

DIP Switch Settings Configuration

Explains the function of DIP switches for parallel and Commodore type printers.

Connector Signals and Interfaces

Details pin assignments and functional descriptions for parallel and Commodore interfaces.

Chapter 2: Theory of Operation

Block Diagram and Main Logic Board

Explains the printer's block diagram and the functions of its main logic board components.

Data Input and Handshake Operations

Details the data input and handshake procedures for parallel and Commodore interfaces.

General Operation Flow Chart

Provides a flowchart illustrating the printer's editing and printing operations.

Motor Driving Circuits and Control

Describes the drive circuits and control signals for carriage and paper feed motors.

Reset, Protection, and Power Supply Circuits

Explains reset mechanisms, protection circuitry, and the power supply unit.

Printer Mechanisms Overview

Details the operational mechanisms of the print head, carriage, ribbon feed, paper feed, and detectors.

Chapter 3: Adjustments

Gap Adjustment: Print Head to Platen

Provides procedures for measuring and adjusting the gap between the print head and the platen.

Timing Belt Tension Adjustment

Details the method for adjusting the timing belt tension to the specified value.

Home Position and Colour Ribbon Holder Adjustments

Explains adjustments for home position detector and colour ribbon holder.

Chapter 4: Parts Replacement

Upper Case and Printer Mechanism Replacement

Instructions for removing and replacing the printer's upper case and main mechanism.

Logic Board, Power Supply, and Fuse Replacement

Procedures for replacing logic board, power supply unit, and fuses.

Print Head, Motor, and Other Unit Replacement

Steps for replacing print head, motors, platen, tractor, and detector units.

Chapter 5: Maintenance and Lubrication

Cleaning and Routine Checks

Procedures for cleaning the printer and performing daily and periodic checks.

Lubricant Recommendations and Application

Details recommended lubricants and the process for lubricating printer parts.

Lubricated Areas Identification

Illustrates the specific areas within the printer that require lubrication.

Chapter 6: Troubleshooting

Troubleshooting Strategy: Unit Replacement

Outlines initial repair steps and a flowchart for unit replacement based on problems.

Repair by Unit Replacement Flowcharts

Detailed flowcharts and guidance for troubleshooting by replacing major units.

Repair by Parts Replacement Flowcharts

Flowcharts for diagnosing and repairing issues by replacing specific components.

Chapter 7: Parts List (Ver. 1 and 1.5)

Printer Assembly and Mechanism Parts Lists

Comprehensive lists of parts for printer assembly and mechanism.

Sub-Assembly, Wiring, and Logic Board Parts Lists

Parts lists for sub-assemblies, wiring schemes, and logic boards.

Power Supply Unit Parts List and Waveforms

Details power supply unit parts, circuit diagrams, and oscilloscope waveform examples.

Chapter 8: Parts List (Ver.2)

Printer Assembly and Mechanism Parts Lists (Ver. 2)

Lists parts for the printer assembly and mechanism specific to Version 2.

Sub-Assembly, Wiring, and Logic Board Parts (Ver. 2)

Parts lists for sub-assemblies, wiring schemes, and logic boards for Version 2.

Power Supply Unit Parts List and Waveforms (Ver. 2)

Details parts for the Version 2 power supply unit and provides waveform information.

Appendix: Explanation of Principle ICs

Key IC Explanations: CPU, Gate Array, ROM, RAM

Explains the function and pin assignments of key ICs like CPU, Gate Array, ROM, and RAM.

Transistor Array and Voltage Detecting IC Explanations

Details the operation and characteristics of transistor arrays and voltage detecting ICs.

Transistor Component Diagrams

Provides diagrams and explanations for specific transistor components used in the printer.

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