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Sony UP-895MD Service Manual

Sony UP-895MD
84 pages
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VIDEO GRAPHIC PRINTER
UP-895
UP-895CE
UP-895MD
SERVICE MANUAL
1st Edition

Table of Contents

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Sony UP-895MD Specifications

General IconGeneral
BrandSony
ModelUP-895MD
CategoryPrinter
LanguageEnglish

Summary

Operating Instructions

Introduction and Overview

General introduction to the UP-895 printer, its features, and capabilities.

Preparation and Setup

Instructions for connecting, setting up the printer, and loading paper.

Paper Storage Guidelines

Guidelines for storing unused paper and printouts to maintain quality.

Operation and Printing

Details on loading paper, making printouts, copying, and managing print jobs.

Print Copying and Direction/Size Selection

How to copy printouts and select printing direction and image size.

Adjusting Contrast and Brightness

How to adjust contrast and brightness using front panel controls and DIP switches.

Remote Printer Control

Using remote control unit or foot switch for printer operation.

Precautions

Safety and Operation Precautions

Important safety measures for operating the printer, including installation and carriage safety.

Maintenance

Cleaning Procedures

Instructions for cleaning the printer's cabinet and thermal head.

Specifications

Printer Technical Specifications

Details on power, dimensions, thermal head, connectors, and supplied accessories.

Remote Connector Specifications

Pin assignment details for the remote connector.

Troubleshooting

Diagnosing Common Printer Problems

Diagnostic flowcharts for common issues like faulty prints, paper jams, or sensor errors.

Location and Function of Parts

Front Panel Controls and Indicators

Identifies and explains the function of front panel buttons, switches, and lamps.

Front Panel Slide Switches

Details on the function of sharpness, gamma, paper type, and smoothing switches.

Section 2 Service Information

Board Layout and Top Cover Removal

Diagram showing board locations and instructions for removing the top cover.

Removal of Major Printer Parts

Step-by-step procedures for removing key components like the mechanical block and boards.

Screw Tightening and Fan Motor Installation

Guidance on tightening screws and installing the fan motor during reassembly.

Section 3 Electrical Alignment

AGC and Video Level Adjustment Procedures

Procedures for adjusting AGC and video signal levels for optimal performance.

Brightness, Contrast, and Head Voltage Adjustments

Steps to adjust brightness, contrast, and head voltage for accurate print output.

Print Count History Initialization

Procedure to reset the printer's internal print count history.

Section 4 Circuit Operation Description

Circuit Overview and Video Processing

Overview of printer circuits, including video signal processing and A/D-D/A conversion.

Clock, Memory, and Head Control Circuits

Details on clock generation, memory management, and thermal head control circuits.

System Control Operations

How the system control IC manages keys, switches, motors, sensors, and other printer operations.

Thermal Head Operation Details

In-depth explanation of the thermal head's structure, basic operation, stair generation, and corrections.

Section 5 Troubleshooting

Diagnosing Common Printer Problems

Diagnostic flowcharts for common issues like faulty prints, paper jams, or sensor errors.

Section 6 Service Mode (Self-diagnostic Function)

Service Mode Functions

Procedures for printing test patterns, checking head/feed operation, and managing print history.

Section 7 Semiconductor Pin Assignments

Semiconductor Pin Configurations

Detailed pin configurations for diodes, LEDs, transistors, ICs, and other semiconductors.

Section 8 Spare Parts

Notes on Repair Parts and Selection

Guidelines for selecting and using spare parts, including warnings and standardization notes.

Exploded Views of Printer Assemblies

Diagrams illustrating the breakdown of major printer assemblies for part identification.

Electrical Parts Lists by Board

Lists of electronic components for each circuit board (KY-454, MA-99, SU-52, SE-531, SE-532).

Frame Components and Accessories

List of frame parts, packing materials, and supplied accessories for the printer.

Section 9 Block Diagram

Printer System Block Diagrams

Schematic diagrams illustrating the functional blocks and interconnections of the printer system.

Section 10 Schematic Diagrams and Board Layouts

Circuit Schematics for Printer Boards

Detailed circuit diagrams for the printer's main boards and assemblies.

Circuit Board Layouts

Physical component layout diagrams for various circuit boards.

Safety Checks After Service

Leakage Test Procedure

Methods for measuring AC leakage current from exposed metal parts.

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