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Star Micronics NX-1500 User Manual

Star Micronics NX-1500
106 pages
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– 60 –
TROUBLESHOOTING
Check or replace
1) IC201
2) D201
Check or replace.
1) IC202
2) TR201
3) ZD201
YES
YES
YES
YES
YES
Replace
Transformer.
The no load voltages are below:
ACS1 About AC30V
ACS2 About AC9V
START
Fuse F1
is blown?
NO
ACS1 and
ACS2 are
supplied?
NO
Replace
Transformer.
Check operation.
END
Replace Fuse F1
Fuse is
blown again?
NO
Connect the
connector CN201.
Fuse F201
is blown?
NO
Fuse F202
is blown?
NO
4-2. Power Supply Circuit Abnormal
(1) Remove connectors CN201 of the main logic board.

Table of Contents

Questions and Answers:

Star Micronics NX-1500 Specifications

General IconGeneral
BrandStar Micronics
ModelNX-1500
CategoryPrinter
LanguageEnglish

Summary

Introduction

Model and Market Information

Identifies printer models and target markets.

Manual Structure Overview

Outlines the main sections and topics covered in the manual.

Edition History

Lists the publication dates of different manual editions.

Chapter 1 General Specifications

General Specifications Details

Core printer specifications including speed, paper feed, and character sets.

External Appearance and Composition

Describes the physical layout and components of the printer.

DIP Switch Settings

Explains the function of DIP switches for configuration.

Parallel Interface

Covers specifications, signals, and timing for parallel connectivity.

Serial Interface (Option)

Details specifications, signals, and DIP settings for serial connectivity.

Chapter 2 Theory of Operation

Block Diagram and Main Logic Board

Overview of printer architecture and logic board functions.

Data Input Operations

Explains parallel and serial data input methods and handshake.

Operational Flow Charts

Details editing, printing, and overall printer operation flow.

Drive Circuits and Control

Explains operation of carriage, paper feed motors, and print head control.

Printer Mechanisms

Describes print head, carriage, ribbon feed, and paper feed mechanisms.

Detectors

Explains the function of various printer sensors.

Chapter 3 Adjustments

Gap Adjustment Between Print Head and Platen

Procedure for measuring and adjusting the print head gap.

Timing Belt Tension Adjustment

Method for adjusting the timing belt tension.

Home Position Detector Adjustment

Steps to adjust the home position detector.

Chapter 4 Parts Replacement

Precautions for Disassembly and Reassembly

Important safety and assembly notes before servicing.

Upper Case Unit Replacement

Steps to remove and replace the printer's upper case.

Control Panel Board Replacement

Procedure for replacing the control panel board.

Main Logic Board Replacement

Steps for removing and replacing the main logic board.

Fuse Board Unit and Fuses Replacement

Instructions for replacing the fuse board and individual fuses.

Print Head Replacement

Procedure to remove, replace, and adjust the print head.

Motor Unit Replacements

Guides for replacing paper feed and carriage motor units.

Bail Roller Shaft and Platen Unit Replacement

Steps for replacing bail roller shaft and platen units.

Tractor Unit Replacement

Procedure for removing and replacing the tractor unit.

Chapter 5 Maintenance and Lubrication

Printer Cleaning Procedures

Instructions for cleaning the printer's exterior and interior.

Maintenance Checks

Outlines daily and periodic checks for printer upkeep.

Lubrication Guidelines

Recommends lubricants, methods, and frequency for printer lubrication.

Lubricated Areas Identification

Identifies specific points requiring lubrication with diagrams.

Chapter 6 Troubleshooting

Troubleshooting Procedures

General strategy for diagnosing and repairing printer issues.

Unit Replacement Flow Chart

A chart guiding unit replacement based on symptoms.

Repair by Unit Replacement

A flowchart detailing the unit replacement process.

Repair by Parts Replacement

Flowcharts for diagnosing and replacing specific faulty parts.

Chapter 7 Parts List

How to Use the Parts List

Explains the structure and conventions of the parts list.

Printer Assembly and Mechanism Parts

Detailed diagrams and lists for printer assembly and mechanism components.

Sub-assemblies and Wiring

Illustrations and parts for sub-assemblies like case, interface, and frame units.

Logic Boards and Control Panel Parts

Circuit diagrams, component layouts, and parts lists for logic and control boards.

Interface and Buffer Board Parts

Schematics and component lists for parallel and serial interface boards.

Waveform Analysis

Oscilloscope waveforms illustrating printer signal operations.

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