Manuali utente per Toshiba 353

Sommario

• GENERAL PRECAUTIONS REGARDING THE INSTALLATION

  3
• CONTENTS

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• 1. SPECIFICATIONS / ACCESSORIES / OPTIONS / SUPPLIES

  9
  • 1.1 Specifications

    9
  • 1.2 Accessories

    13
  • 1.3 Options

    14
    • 1.3.1 e-STUDIO350/450

      14
    • 1.3.2 e-STUDIO352/353/452/453

      15
  • 1.4 Supplies

    17
  • 1.5 System List

    18
    • 1.5.1 e-STUDIO350/450

      18
    • 1.5.2 e-STUDIO352/353/452/453

      19
• 2. OUTLINE OF THE MACHINE

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  • 2.1 Sectional View

    21
  • 2.2 Electric Parts Layout

    25
  • 2.3 Symbols and Functions of Various Components

    35
  • 2.4 General Description

    42
    • 2.4.1 System block diagram

      42
    • 2.4.2 Construction of boards

      44
  • 2.5 Installation and Replacement of

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    • 2.5.1 External covers

      47
    • 2.5.2 PC boards

      53
  • 2.6 Options

    61
• 3. COPY PROCESS

  83
  • 3.1 General Description of Copying Process

    83
  • 3.2 Details of Copying Process

    84
  • 3.3 Comparison with DP4500/3500

    92
• 4. GENERAL OPERATION

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  • 4.1 Overview of Operation

    93
  • 4.2 Description of Operation

    93
    • 4.2.1 Warming-up

      93
    • 4.2.2 Ready state (ready for copying)

      94
    • 4.2.3 Drawer feed copying (Upper drawer paper feeding)

      94
    • 4.2.4 Bypass feed copying

      97
    • 4.2.5 Interruption copying

      97
  • 4.3 Detection of Abnormality

    98
    • 4.3.1 Types of abnormality

      98
    • 4.3.2 Description of abnormality

      99
  • 4.4 Flow Chart

    104
    • 4.4.1 Immediately after the power is turned ON

      104
    • 4.4.2 Automatic paper feed copying

      106
• 5. CONTROL PANEL

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  • 5.1 Control Panel and Display Panel

    109
  • 5.2 Items Shown on the Display Panel

    110
    • 5.2.1 Display

      111
  • 5.3 Relation between the Equipment State and Operator’s Operation

    116
  • 5.4 Description of Operation

    117
    • 5.4.1 Dot matrix LCD circuit

      117
    • 5.4.2 LED display circuit

      119
  • 5.5 Disassembly and Replacement

    120
• 6. SCANNER

  123
  • 6.1 Function

    123
  • 6.2 Construction

    124
  • 6.3 Description of Operation

    126
    • 6.3.1 Scan motor

      126
    • 6.3.2 Scanning drive circuit

      127
    • 6.3.3 Initialization at power-ON

      129
  • 6.4 Control of Exposure Lamp

    130
    • 6.4.1 General description

      130
    • 6.4.2 Exposure lamp

      131
    • 6.4.3 Control circuit for the exposure lamp

      132
  • 6.5 General Description of CCD Control

    133
    • 6.5.1 Opto-electronic conversion

      133
    • 6.5.2 Shading correction

      133
  • 6.6 Automatic Original Size Detection Circuit

    134
    • 6.6.1 Principle of original size detection

      134
    • 6.6.2 Process of detection of original size

      134
  • 6.7 Disassembly and Replacement

    138
• 7. IMAGE PROCESSING

  147
  • 7.1 General Description

    147
  • 7.2 Configuration

    149
  • 7.3 SLG Board

    150
    • 7.3.1 Features

      150
    • 7.3.2 Functions of image processing circuit

      151
  • 7.4 LGC Board

    155
    • 7.4.1 Features

      155
    • 7.4.2 Functions of image processing circuit

      155
  • 7.5 Laser Driving PC Board (LDR board)

    156
• 8. LASER OPTICAL UNIT

  157
  • 8.1 General Description

    157
  • 8.2 Structure

    159
  • 8.3 Laser Diode

    163
  • 8.4 Laser Optical Unit Cooling Fan

    164
  • 8.5 Polygonal Motor

    164
  • 8.6 Disassembly and Replacement

    165
• 9. PAPER FEEDING SYSTEM

  167
  • 9.1 Functions

    167
  • 9.2 Operation

    171
    • 9.2.1 Operation of bypass pickup roller

      171
    • 9.2.2 Operation of drawer pickup roller

      171
    • 9.2.3 Separation of paper

      172
    • 9.2.4 General operation

      173
  • 9.3 Drive Circuit of Tray-up Motor

    175
  • 9.4 Disassembly and Replacement

    176
• 10. DRIVE SYSTEM

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  • 10.1 General Description

    197
  • 10.2 Functions

    197
  • 10.3 Main Motor

    198
    • 10.3.1 Main motor drive

      198
    • 10.3.2 Control signals

      199
  • 10.4 Disassembly and Replacement

    200
• 11. DRUM RELATED SECTION

  203
  • 11.1 Configuration

    203
  • 11.2 Functions

    204
  • 11.3 Output Control Circuits of High-Voltage Transformer

    207
    • 11.3.1 Overview

      207
    • 11.3.2 Description of operations

      207
  • 11.4 Drum Temperature Detection Circuit

    209
  • 11.5 Temperature/Humidity Sensor

    210
    • 11.5.1 General description

      210
    • 11.5.2 Construction

      210
  • 11.6 Disassembly and Replacement

    211
• 12. DEVELOPMENT SYSTEM

  223
  • 12.1 Configuration

    223
  • 12.2 Functions

    224
  • 12.3 Drive Circuit of Toner Motor

    225
  • 12.4 Auto-Toner Circuit

    226
    • 12.4.1 General description

      226
    • 12.4.2 Function of auto-toner sensor

      227
    • 12.4.3 Adjustment using the temperature / humidity sensor

      229
    • 12.4.4 Adjustment using the drum thermistor

      229
  • 12.5 Disassembly and Replacement

    230
• 13. FUSER UNIT / PAPER EXIT SECTION

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  • 13.1 General Description

    239
  • 13.2 Operation

    239
  • 13.3 Functions

    240
  • 13.4 Heater Control Circuit

    242
    • 13.4.1 Configuration

      242
    • 13.4.2 Heating principle of IH Heater

      243
    • 13.4.3 IH control circuit interface

      244
    • 13.4.4 Relation between system configuration and IH output

      245
    • 13.4.5 Temperature detection section

      246
    • 13.4.6 Abnormality in the IH control circuit

      251
  • 13.5 Control Circuit of Exit Motor

    253
  • 13.7 Disassembly and Replacement

    254
• 14. AUTOMATIC DUPLEXING UNIT (ADU)

  265
  • 14.1 General Description

    265
  • 14.2 Description of Operations

    266
  • 14.3 Drive of ADU

    272
  • 14.4 Flow Chart

    273
  • 14.5 Disassembly and Replacement

    275
• 15. POWER SUPPLY UNIT

  285
  • 15.1 Construction

    285
  • 15.2 Operation of DC Output Circuits

    285
  • 15.3 Output Channel

    286
  • 15.4 Fuse

    288
  • 15.5 Configuration of Power Supply Unit

    289
  • 15.6 Sequence of Power Supply

    290
  • 15.7 AC Wire Harness

    291
• 16. PC BOARDS

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