Tandon TM848-2 Manuals

Manuals and User Guides for Tandon TM848-2. We have 2 Tandon TM848-2 manuals available for free PDF download: Operating And Service Manual

Tandon TM848-2 Operating And Service Manual (90 pages)

OEM DISK DRIVES 48 TRACKS PER INC

Brand: Tandon | Category: Floppy Disk Drive | Size: 3.97 MB

Table of Contents
3
1 Introduction

8
- Functional Description of the Drive
  8
- Physical Description of the Drive
  8
- Purpose of the Drive
  8
- Section I
  8
  - Introduction Tothetm848 Familyof Disk Drives
    8
- Diskettes
  9
- Incoming Inspection Checks and Procedures
  9
- Interface Circuit Specifications
  9
- Mechanical and Electrical Sepcifications
  9
- Mechanical and Electrical Specifications
  9
- Power Requirements
  9
- Interface Connections
  12
- Mounting the Drive
  12
- Cooling System Requirements
  13
- Diskette Care, Handling and Storage
  13
- Dust Cover
  13
- Hardware "1-6
  13
- TM848 Disk Drive Mounting Configuration
  13
- Components of the Drive
  14
- Operation of the Drive
  14
- Organization of the Drive
  14
- Write Protect
  14
- Drive Status Logic
  15
- Index Pulse
  15
- Data Electronics
  16
- Positioner Control
  16
- Spindle Drive System
  16
- TM848 Disk Drive Functional Block Diagram
  16
- FM Recording Magnetization Profiles
  17
- Write Operation Timing Diagram
  18
- Interface Electronics
  19
  - Interface Connector Pin Assignments, P13
    19
- Power Connector Pin Assignments
  19
- Read Timing Diagram
  19
- Drive Select
  21
- Input Line Terminations from Removable Resistor Pack
  21
- Power Connector Pin Assignments
  21
- Program Shunt
  21
- Terminated Lines
  21
- Circuit Board Assembly
  22
- General Control and Data Timing Requirements
  23
- Options
  24
  - Drive Select DS1--DS4
    25
  - Side Select Options Using Drive Select
    25
- User-Selectable Options
  24
- In Use from Drive Select
  25
- In Use from Head Load
  25
- Radial Ready
  25
- Ready Alternate Output Pad
  25
- Radial Index
  26
- Radial Ready Installation
  26
- Ready Modified
  26
- Disk Change
  27
- Diskette Lever Lock Latch Option
  27
- In Use Altenate Output Pad
  27
- Index Alternate Output Pad
  27
- Radial Index Installation
  27
- Two-Sided Diskette Installed
  27
- 1.19.19 Allow Write When Write Protected
  28
- Head Load Alternate Output Pad Option
  28
- Inhibit Write When Write Protected
  28
- Radial Head Load Signal Option
  28
- Stepper Power from Drive Select
  28
- Stepper Power from Head Load Line
  28
2 Introduction

30
3 Introduction

42
- Physical Description of the Circuit Board
  42
- Input Control Lines
  43
- Drive Interface Lines and Pin Connectors
  44
- Stepper Logic Truth Table
  46
  - Write Data Circuit Block Diagram
    47
- Trim Erase Diagram
  49
  - Side Select Schematic Diagram
    50
- Output Control Lines
  51
  - Index Schematic Diagram
    52
  - Track 00 Schematic Diagram
    53
  - Write Protect Schematic Diagram
    54
  - Read Circuit Block Diagram
    55
  - Troubleshooting Guide
    57
4 Introduction

57
- Not Ready And/Or no Index
  58
- Will Not Seek or Restore
  58
- Will Not Read
  59
- Will Not Write
  59
- Activity L.E.D. Inoperative
  60
- Drive Motor will Not Start When Door Latched
  60
- Drive Belt
  61
5 Introduction

61
- Replacement Procedures
  61
- Drive Motor
  62
  - Drive Belt and Spindle
    62
- Circuit Board
  63
  - Drive Motor and Related Parts
    63
- Cone Assembly
  64
  - Circuit Board Mounting Screws
    64
  - Cone Assembly Key Parts
    65
  - Cone Assembly Parts
    65
- Bridge Assembly
  66
- Diskette Lever
  66
- Bezel
  68
  - Bridge Assembly Additional Key Parts
    68
- Bezel and Related Parts
  68
- Activity L, E, D
  69
- Load Arm Assembly
  70
- Load Arm Assembly Key Parts
  70
  - Write Protect Sensor Assembly
    71
  - Track 00 Sensor Assembly Key Parts
    71
- Track 00 Sensor Assembly
  70
- Door Switch Assembly
  72
- Write Protect Sensor Assembly Key Parts
  72
- Door Switch Assembly Key Parts
  73
- Index Sensor Assembly
  73
- Index Sensor Assembly Key Parts, Top View
  73
  - Diskette Ejector Assembly
    74
- Index Sensor Assembly Key Parts, Bottom View
  74
  - Load Resistor Assembly
    75
- Diskette Ejector Assembly Key Parts
  75
- Load Resistor Assembly and Key Parts
  76
  - Stepper Band
    77
- Stepper Band Key Parts
  77
  - Stepper Motor Assembly
    78
- Stepper Band Additional Key Parts
  78
  - Head Carriage Assembly
    79
- Stepper Motor Assembly Key Parts
  79
  - Drawings
    81
Appendix I Printed Circuit Board Schematics and Assembly

88
Appendix II Recommended Spare Parts List

88

tandon TM848-2 Operating And Service Manual (90 pages)

48 TRACKS PER INC

Brand: tandon | Category: Storage | Size: 6.89 MB

Table of Contents
4
Mechanical and Electrical Specifications
9
TM848 Disk Drive Functional Block Diagram
16
Power Requirements
11
Figure
13
TM848 Disk Drive Mounting Configuration
13
Disk Change
14
2 Introduction

30
Section II I

42
- Printed Circuit Board O P E R a T Io N
  42
3 Introduction

42
Troubleshooting Guide

57
4 Introduction

57
- Not Ready And/Or no Index
  58
- Will Not See Kor Restore
  58
- Will Not Write
  59
- Will Not Read
  59
- Activity L.E.D. Inoperative
  59
- Drive Motor will Not Start When Door Latched
  60
5 Introduction

61
- Drive Motor
  61
  - Circuit Board
    61
- Cone Assembly
  61
- Drive Belt and Spindle
  62
- Drive Motor and Related Parts
  63
- Circuit Board Mounting Screws
  64
- Cone Assembly Key Parts
  65
- Cone Assembly Parts
  65
- Diskette Lever
  66
- Bridge Assembly
  66
- Diskette Lever Key Parts
  66
- Diskette Lever Adjustment
  67
- Bridge Assembly Key Parts
  67
- Bezel
  68
- Bridge Assembly Additional Key Parts
  68
- Bezel and Related Parts
  68
- I Activity L. E. D. Key Parts
  69
- Load Arm Assembly Key Parts
  70
- Track 00 Sensor
  71
- Track 00 Sensor Assembly Key Parts 5-1
  71
- Write Protect Sensor Assembly Key Parts
  72
- Door Switch Assembly Key Parts
  73
- Index Sensor Assembly Key Parts, Top View
  73
- Index Sensor Assembly Key Parts, Bottom View
  74
- Diskette Ejector Assembly Key Parts
  75
- Load Resistor Assembly and Key Parts 5-1
  76
- Stepper Band Key Parts 5-1
  77
- Stepper Band Additional Key Parts 5-1
  77
- Stepper Motor Assembly Key Parts
  79
- Printed Circuit Board
  81

Tandon Categories

Storage Floppy Disk Drive DC Drives

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Tandon TM848-2 Manuals

Tandon TM848-2 Operating And Service Manual (90 pages)

Table of Contents

1 Introduction

2 Introduction

3 Introduction

4 Introduction

5 Introduction

Appendix I Printed Circuit Board Schematics and Assembly

Appendix II Recommended Spare Parts List