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Toshiba 1550 Service Manual

Toshiba 1550
212 pages
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SERVICE MANUAL
PLAIN PAPER COPIER
PAPER FEEDING UNIT
1550,1560
MY-1004
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Copyright TOSHIBA CORPORATION 1998
ALL RIGHTS RESERVED

Table of Contents

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Toshiba 1550 Specifications

General IconGeneral
BrandToshiba
Model1550
CategoryCopier
LanguageEnglish

Summary

GENERAL PRECAUTIONS REGARDING THE INSTALLATION AND THE SERVICE OF THE 1550/1560/MY-1004

Transportation and Installation

Procedures for safely transporting and installing the copier unit.

Installation

Guidelines for proper installation, including power and placement requirements.

Service of Machines

Safety precautions and best practices to follow during machine servicing.

SPECIFICATIONS, ACCESSORIES AND OPTIONS

Specifications

Detailed technical specifications for the 1550 and 1560 copier models.

Accessories

Lists optional accessories available for the copier, with part numbers.

Options and Supplies

Details available options and consumable supplies for the copier model.

OUTLINE OF THE MACHINE

Sectional Views and Electrical Parts Location Diagram

Visual diagrams showing sectional views and location of electrical parts within the machine.

Electrical Parts Location Diagrams

Identifies the location of various electrical components within the machine's circuitry.

Removing Covers and Electrical Parts

Removing Covers

Step-by-step instructions for removing various external covers of the machine.

Removal and Installation of Electrical Parts

Procedures for removing and installing specific electrical components like PC boards and motors.

COPYING PROCESS

Copying Process Details

Explains the step-by-step process of how the copier creates an image.

ED-1550/1560 Copying Process

Details the specific copying process steps and components for models ED-1550/1560.

COPIER OPERATION

Operation Outline

Provides a general overview of the copier's operational modes and functions.

Description of Operation

Explains the operational sequences for warm-up, standby, and various copying modes.

Fault Detection

Describes how faults are detected and indicated, and their classification.

Flow Charts

Presents flowcharts illustrating operational sequences and fault handling logic.

DISPLAY UNIT

Control Panel and Indication Panel

Details the components and functions of the copier's control panel and display.

Items Displayed on Control Panel

Explains the meaning of various symbols and indicators shown on the control panel.

Relationship between Machine Condition and Operator’s Action

Maps machine conditions to the corresponding operator actions and key functionalities.

DRIVE MECHANISM

Construction

Explains the mechanical construction and layout of the copier's drive system.

Explanation of Functions

Details the functions of the various drive components and their roles.

Disassembly and Replacement

Provides instructions for disassembling and replacing key drive mechanism parts.

OPTICAL SYSTEM

Construction

Describes the physical layout and components of the copier's optical system.

Explanation of Operation

Explains how the scanning, mirror, and lens motors operate the optical system.

Disassembly and Replacement

Provides procedures for removing and replacing components within the optical system.

FEEDER UNIT

Construction

Details the mechanical construction of the upper and lower paper feeder units.

Explanation of Operation

Details the paper feeding operations and jam detection/clearing procedures.

Disassembly and Replacement

Provides instructions for disassembling and replacing parts of the paper feeder unit.

DRUM-RELATED SECTION

Construction

Describes the physical construction of the drum and related components.

Explanation of Functions

Explains the functions of the main charger, discharge lamp, and transfer/separation chargers.

Disassembly and Replacement

Provides procedures for disassembling and replacing drum-related components.

DEVELOPER UNIT

Construction

Details the mechanical construction of the developer unit.

Drive System

Explains the drive system for the magnetic roller, mixers, and toner cartridge.

Disassembly and Replacement

Provides instructions for disassembling and replacing developer unit components.

CLEANER UNIT (Shares Part of the Process Unit)

Construction

Describes the physical construction of the cleaner unit.

Explanation of Functions

Explains the functions of the main blade, recovery blade, and toner recovery auger.

Disassembly and Replacement

Provides procedures for disassembling and replacing cleaner unit components.

FUSER AND PAPER EXIT SECTION

Construction

Details the construction of the fuser and paper exit sections, including rollers and lamps.

Explanation of Operation

Explains the operation of the fuser unit for fixing toner and the paper exit section.

Disassembly and Replacement

Provides procedures for disassembling and replacing components of the fuser and paper exit sections.

OPTIONAL PAPER FEEDING UNIT (MY-1004)

Specifications

Lists the technical specifications for the optional paper feeding unit MY-1004.

General Description

Provides a general overview and identifies the main components of the paper feeding unit.

Functions and Operation

Explains the paper feeding operations and jam detection/clearing procedures.

Disassembly and Replacement

Details procedures for disassembling and replacing covers and parts of the paper feeding unit.

ELECTRIC CIRCUIT DIAGRAM

Logic Circuit

Detailed logic circuit diagram for the 1550 model, showing PWA-F-LGC connections.

Control Panel Circuit

Shows the circuit diagram for the control panel (PWA-F-PNL) of the copier.

Power Supply Circuit

Illustrates the power supply circuit diagram, detailing DC and AC outputs.

PC BOARD ASSEMBLY

PWA-F-LGC

Shows the physical layout of the PWA-F-LGC PC board.

PWA-F-FUS

Shows the physical layout of the PWA-F-FUS PC board.

PWA-F-PNL

Shows the physical layout of the PWA-F-PNL PC board.

PWA-F-AES

Shows the physical layout of the PWA-F-AES PC board.

PWA-F-LRG

Shows the physical layout of the PWA-F-LRG PC board.

HARNESS CONNECTION DIAGRAM

AC Harness Connection Diagram

Illustrates the harness connections for the AC control circuit of the copier.

DC Harness Connection Diagram

Shows the DC harness connections for the 1550 model, listing component symbols.

UNPACKING PROCEDURE

Unpacking and Set-up Procedure for the 1550

Step-by-step guide for unpacking and setting up the 1550 model copier.

Adjustment Procedure

Details the procedure for automatically adjusting the auto-toner sensor.

Final Operation Check

Outlines checks to perform after setup to ensure proper operation and image quality.

Changing the Image Settings

Explains how to adjust light distribution for optimal image quality.

Exposure adjustment

Guides users on manually adjusting exposure settings for the 100% reproduction ratio.

Automatic adjustment of auto exposure (50%, 100%, 154% and 200%)

Describes the automatic process for adjusting exposure across multiple reproduction ratios.

Manual adjustment of exposure

Provides manual adjustment procedures for exposure based on specific codes and modes.

Changing the Paper Size of the Cassette

Instructions on how to change the paper size settings within the cassette.

Procedure for Installing the Toner Cartridge

Step-by-step guide for safely installing a new toner cartridge into the copier.

Unpacking and Set-up Procedure for the Paper Feeding Unit MY-1004

Instructions for unpacking and setting up the optional paper feeding unit MY-1004.

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