Toshiba E-STUDIO 550 Bedienungsanleitung

SERVICE MANUAL

e-STUDIO550/650/810

DIGITAL PLAIN PAPER COPIER

FileNo.31100202

(DP-5510/6510/8110)

2002-06

1. SPECIFICATIONS / ACCESSORIES /

OPTIONS / SUPPLIES

1.1. Specifications

1.2. Accessories

1.3. Options

1.4. Supplies

1.5. System List

TABLE OF CONTENTS

2. OUTLINE OFTHE MACHINE

2.1. Sectional View

2.2. Electric Parts Layout

2.3. Symbols and Functions of Various Components

2.4. Symbols and Functions of RADF Various

Components

2.5. System Block Layout

2.6. Disassembly and Replacement of Covers and PC

Boards

2.6.1. Covers

2.6.2. PC boards

3. COPY PROCESS

3.1. General Description

3.2. Details of Copy Process

3.3. Comparison of Copy Process to 6570/5570

4. GENERAL OPERATION

4.1. Overview of Operation

4.2. Operation

4.2.1. Warming-up

4.2.2. Standby state (ready for copying)

4.2.3. Cassette feed copying with [START] key ON

4.2.4. Bypass copying

4.2.5. Interrupt copying

4.3. Abnormality Detection

4.3.1. Abnormality classification

4.3.2. Abnormality description

4.4. Flow Chart

4.4.1. Power ON to ready

4.4.2. Automatic feed copying

5. CONTROL PANEL

5.1. Control Panel and Display Panel

5.2. Items Shown on Display Panel

5.2.1. Display during normal copying

5.2.2. Display in abnormal condition

5.3. Relation between Copier State and Operator's Action

5.4. Operation

5. 4. 1. Dot matrix LCD circuit

5.4.2. LED display circuit

5.5. Disassembly and Replacement

6. SCANNING SECTION

6.1. Function

6.2. Construction

6.3. Operation

6.3.1. Scanner motor

6.3.2. Two-phase motor drive circuit (fixed-current

type)

6.4. Control for Exposure Lamp

6.4.1. General description

6.4.2. Exposure lamp

6.4.3. Control circuit for exposure lamp

6.5. CCD control

6.5.1. Opto-electronic conversion

6.5.2. Shading correction

6.6. Automatic Original Size Detection Circuit

6.6.1. Principle of original size detection

6.6.2. Process of original size detection

6.7. Disassembly and Replacement

7. IMAGE PROCESSING

7.1. General Description

7.2. Image Processing Circuit

7.2.1. General description

7.2.2. Configuration

7.3. SLG Board (PWA-F-SLG-340)

7.3.1. Features

7.3.2. Functions of image processing circuit

7.4. PLG Board (PWA-F-PLG-340)

7.4.1. Features

7.4.2. Functions of image processing circuit

7.5. Scanning Section

7.6. Writing Section

8. LASER OPTICAL UNIT

8.1. General Description

8.2. Structure

8.3. Laser Diode

8.4. Disassembly and Replacement

9. PAPER FEEDING SYSTEM

9.1. General Description

9.2. Functions

9.3. Operation

9.3.1. Operation of bypass pickup roller

9.3.2. Operation of cassette pickup roller

9.3.3. Paper separation

9.3.4. General operation

9.4. Drive Circuit forTray-up Motor

9.5. Disassembly and Replacement

10. PROCESS RELATED SECTION

10. 1.

Construction

10. 2.

Functions

10. 3.

Charger Wire Cleaner Operational Circuit

10. 4.

High-voltageTransformer Output Control Circuit

10. 4. 1.

General description

10. 4. 2.

Operation

10. 5.

Surface Potential Sensor

10. 5. 1.

General description

10. 5. 2.

Construction

10. 5. 3.

Control method

10. 6.

Disassembly and Replacement

11. DRUM/CLEANER UNIT

11. 1.

Construction

11. 2.

Functions

11. 3.

DrumTemperature Detection Circuit

11. 4.

Image Quality Control

11. 4. 1.

General description

11. 4. 2.

Principle of sensor

11. 4. 3.

Outline of control

11. 4. 4.

Construction

11. 5.

Disassembly and Replacement

12. DEVELOPER UNIT

12. 1.

Construction

12. 2.

Functions

12. 3.

Developer Unit Drive

12. 4.

Motor Drive Circuit

12. 4. 1.

Tonermotor

12. 4. 2.

Developer motor

12. 5.

Auto-toner Sensor Circuit

12. 5. 1.

General description

12. 5. 2.

Operation of auto-toner sensor

12. 6.

Disassembly and Replacement

13. TRANSFER/TRANSPORT UNIT

13. 1.

General Description

13. 2.

Operation

13. 3.

Functions

13. 4.

Disassembly and Replacement

14. FUSER UNIT

14. 1.

General Description

14. 2.

Operation

14. 3.

Functions

14. 4.

Heater Control Circuit

14. 4. 1.

Configuration

14. 4. 2.

Heating principle of IH coil

14. 4. 3.

IH control circuit interface

14. 4. 4.

IH control circuit abnormalities

14. 4. 5.

Temperature detecting section

14. 4. 6.

Detection of open-circuited thermistors

14. 5.

Fuser Motor Drive

14. 5. 1.

Outline of operation

14. 5. 2.

Control signals

14. 6.

Disassembly and Replacement

15. EXIT/REVERSE SECTION

15. 1.

General Description

15. 2.

Operation

15. 3.

Disassembly and Replacement

16. REVERSING AUTOMATIC DOCUMENT

FEEDER (RADF)

16. 1.

General Description

16. 2.

Construction

16. 3.

Drive System

16. 4.

Signal Block Diagram

16. 5.

Operations

16. 5. 1.

A4 single-sided feeding

(Operational condition: A4 paper/Rreproduction ratio: 100%)

16. 5. 2.

A4 double-sided feeding

(Operational condition: A4 paper/Reproduction ratio: 100%)

16. 5. 3.

A3 single-sided feeding

(Operational condition: A3 paper/Reproduction ratio: 100%)

16. 5. 4.

A3 double-sided feeding

(Operational condition: A3 paper/Reproduction ratio: 100%)

16. 5. 5.

Single-sided feeding at mixed-original mode

(Operational condition: A4-R and FOLIO papers/Reproduction ratio: 100%)

16. 6.

Jams

16. 6. 1.

Jams at feeding section

16. 6. 2.

Jams at transporting section

16. 6. 3.

Jams at large original exit section

16. 6. 4.

Jams at small original reverse section

16. 6. 5.

Jams at small original exit section

16. 6. 6.

Jams at intermediate transport section

16. 7.

Erros

16. 8.

Original Size Detection

16. 8. 1.

Original size detection method

16. 8. 2.

Original size detection chart

16. 9.

Flow Chart

16.10.

Timing Chart

16.11.

Circuits

16.12.

Input/Output Signals

16.13.

Disassembly and Replacement

17. POWER SUPPLY UNIT

17. 1.

Construction

17. 2.

Operation of DC Output Circuits

17. 3.

Output Channel

17. 4.

Fuse

17. 5.

Configuration of Power Supply Unit

17. 6.

Power Supply Sequence

18. PC BOARDS

SERVICE HANDBOOK

File No.31110201

e-STUDIO550/650/810

DIGITAL PLAIN PAPER COPIER

(DP-5510/6510/8110)

2002-06

Andere Handbücher für e-STUDIO 550

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