Remex RFD4000-A Manuals

Manuals and User Guides for Remex RFD4000-A. We have 1 Remex RFD4000-A manual available for free PDF download: Technical Manual

Remex RFD4000-A Technical Manual

Remex RFD4000-A Technical Manual (124 pages)

Diskette Drive

Brand: Remex | Category: DC Drives | Size: 4 MB

Table of Contents

Table of Contents
5
Title Page
6
Equipment Description
13
General Description
13
RFD4000 Diskette Drive
13
- Options, Factory Installed
  14
- Options, Customer Installed
  15
Equipment Warranty
15
Maintenance Equipment Required but Not Supplied
15
Specifications
15
- Maintenance Equipment Required
  15
Diskette
17
Maintenance and Reliability
17
- Design Life
  17
- Recoverable Read Error
  17
- Non-Recoverable Read Error Rate
  17
Recording Format
17
IBM Track Format
20
Recording Format Using Index Recording
21
- Access Positioning Error Rate
  23
- Interchangeability
  23
Model Number Designation
23
1, .8 Model Number Designation
24
- Installation and Interface
  26
  - Unpacking
    26
Mounting
26
- Initial Adjustments
  26
  - Line Terminator
    26
  - Drive Select Jumpers
    27
- Power and System Connections
  27
Recommended Interface Circuits
27
Interface Signal and Connector Locations
29
- Double Density Design Considerations
  30
  - Double Frequency and Mfm Encoding Compared
    30
Double Frequency Encoding
30
MFM Encoding
31
- M 2 Mf Format Description
  34
- Operation
  36
Input-Output Signals
36
- Operator Controls
  36
Loading and Operating Instructions
36
- Power up Mode
  36
- Interface Signal Descriptions
  37
- Diskette Handling
  39
Power up and Seek Sequence
39
- Diskette Loading/Unloading
  40
Diskette Insertion
40
- Drive Selection
  41
- Track Positioning
  41
- Side Selection
  41
- Read Operation
  41
- Write Operation
  42
- Composite Sequence
  43
- Error Detection and Correction
  43
- Write Error
  43
Write Sequence
43
- Read Error
  45
  - Seek Errors
    45
  - Data Separator
    46
  - Sector Output
    46
- Factory Installed Options
  46
Data Separator Timing
47
Customer Installed Options
48
Trace and Jumper Locations
49
Trace and Jumper Locations
50
Block Diagram Description
56
- Diskette Drive Mechanism
  56
- Head Positioning Mechanism
  56
- Read/Write Head
  56
- Drive Electronics
  58
- Dignal Mnemonics
  59
Theory of Operation
56
Functional Description
59
- Read Circuits and Data Separator (Rfd4001 and Rfd2001)
  59
Read/Write/Erase Block Diagram
60
- Write Circuits
  61
Read Circuit and Data Separator Timing Diagram
62
- Erase Circuits
  63
- Step Motor Drive Circuits
  63
Stepper Motor Energizing Sequence
64
- Index/Sector Circuits
  65
- Write Protect Circuit
  66
- Disk Change Circuit
  66
Timing Diagram, Index and Sector Circuits
66
- Two-Sided Circuitry (Rfd400X Only)
  67
- Drive Select Logic
  67
Side Select Logic (Rfd4000 and Rfd4001 Only)
67
Door Closed Circuit
68
- Customer Installable Options
  68
  - Side Selection Utilizing Drive Select Lines
    68
  - 4.2.13.2 Radial Ready
    68
  - Radial Index and Sector
    69
  - Two Sided Status Output
    69
  - Disk Change Option
    69
Power up Reset
68
Drive Select Without Loading Heads or Enabling
69
- Drive Select Without Loading Heads or
  70
- Enabling Stepper Motor
  70
Radial Ready Circuit
69
Radial Index/Sector Circuits
70
- Loading Head
  71
Drive Select and Motor Enable Without Loading Head
71
- Enabling Step Motor
  72
Head Load Without Selecting Drive or Enabling Step Motor
72
- (Rfd400X Only)
  73
- Door Lock Latch
  73
- Write Protect Optional Use
  74
- Volt Option
  74
- Data Separation Option Select
  74
Stepper Motor
75
- Drive Mnemonics
  75
  - Maintenance
    76
  - General
    76
  - Maintenance Procedures
    76
    
    Read/Write Head Cleaning
    77
L Read/Write Head Cleaning, RFD400X Only
77
- Read/Write Head Cleaning, RFD200X Only
  77
  - Inspection and Maintenance Procedures
    78
  - Troubleshooting
    79
  - Troubleshooting Chart
    81
  - Electrical Adjustments
    83
    
    Track Alignment
    83
    
    Track Switch and Mechanical Stop Adjustment
    84
    
    Index Alignment
    85
    
    Write Protect Adjustment
    86
  - (Rfd4001 and Rfd2001 Only)
    87
  - R16 Crossover Detector Input DC Balance Adjustment
    87
Mechanical Adjustment
88
General 6_1
91
- Title Page
  91
Parts Replacement
91
Drive Motor Assembly Replacement
92
Motor Drive Belt Replacement
92
Printed Circuit Card Replacement
92
Hub Pulley Replacement
93
Index L.e.D. Assembly Replacement
93
- Optical Switch Replacement
  93
Carrier Assembly Replacement
94
Expanding Clutch Assembly Removal
94
Single-Sided
95
- Replacement
  95
- Drive Hub Replacement
  96
- Head Load Solenoid Replacement
  96
Parts List
97
General 8_1
115
Schematic Drawings
115

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