Toshiba GD-1221 User Manuals

Table of Contents

• CONTENTS

  5
• 1. SPECIFICATIONS AND OUTLINE OF SYSTEM

  7
  • 1.1 FAX Options

    7
  • 1.2 Specifications

    8
  • 1.3 Features

    11
  • 1.4 Accessories and Parts

    14
  • 1.5 Options

    15
  • 1.6 System List

    16
  • 1.7 Units and Components

    17
  • 1.8 Layout of PC Boards

    18
• 2. LSU-RELATED FUNCTIONS

  19
  • 2.1 Recording paper size

    19
  • 2.2 Effective recording area

    20
  • 2.3 Print mode

    22
  • 2.4 Recording paper selection algorithm and print algorithm

    23
    • 2.4.1 Recording paper selection algorithm

      23
    • 2.4.2 Print algorithm

      23
  • 2.5 Error processing

    32
  • 2.6 Limitations on reception print

    33
• 3. DIALING/COMMUNICATION CONTROL

  35
  • 3.1 Circuit Connection and Procedure to Change Mode

    35
    • 3.1.1 Dial call-up transmission to a telephone circuit

      35
    • 3.1.2 Selection of the communication mode

      36
    • 3.1.3 Procedure to select the transmission mode

      36
  • 3.2 Signaling System Diagram and Signal Forms

    37
    • 3.2.1 Circuit control signals

      37
    • 3.2.2 Communication with the binary signals

      38
    • 3.2.3 V.8/V.34 communication sequence

      46
  • 3.3 FAX Automatic Switching

    59
    • 3.3.1 General functions

      59
    • 3.3.2 TEL mode

      59
    • 3.3.3 FAX mode

      59
• 4. ELECTRICAL CIRCUITS

  61
  • 4.1 Configuration

    61
  • 4.2 Description of Circuits

    62
    • 4.2.1 Configuration

      62
    • 4.2.2 Line path switching control circuit

      64
    • 4.2.3 Dial pulse generation circuit

      66
    • 4.2.4 Line current detection circuit

      68
    • 4.2.5 CI detection circuit

      70
    • 4.2.6 Line monitor circuit

      72
  • 4.3 PC Boards

    75
• 5. INSTALLATION

  79
  • 5.1 Explanation to the Users

    79