Archive 90451 Manuals

Manuals and User Guides for Archive 90451. We have 1 Archive 90451 manual available for free PDF download: Maintenance Manual

Archive 90451 Maintenance Manual (137 pages)

Brand: Archive | Category: Cassette Player | Size: 4 MB

Table of Contents
3
Paragraph
4
Title Page
4
List of Tables
7
Introduction
9
Physical Description I
9
Scope
9
Basic Drive
10
Controller
10
Functional Description
10
The ARCHIVE Intelligent Cartridge Tape Drive
10
SIDEWINDER Performance Specifications
11
Specifications
11
Environmental Specifications
12
Power Specifications
12
Physical Specifications
13
Suggested Maintenance Tools
13
General Information
15
Host Generated Signals
15
Input Signal Pin Assignments and Signal Description
15
Operation
15
Drive Generated Signals
16
Output Signal Pin Assignments and Signal Description
17
Tape Format
17
Tape Format Description
18
Tape Tracks, Serpentine
18
Data Bus Commands
19
Host Data Bus Commands
19
Power Connector
19
Cleaning
21
Preventive Maintenance
21
Soft Error Statistics
21
Field Troubleshooting
23
General Information
23
Troubleshooting
24
Equipment Required
27
Field Checks and Adjustments
27
General Information
27
Read Test
27
Write Test
27
Master Drive
29
Master Drive Cleaning
29
Master Drive Verification
29
Purpose
29
Basic Drive Removal and Replacment
31
Field Removal and Replacement
31
General Information
31
Main Board
31
Drive Motor with Fan Assembly
33
Drive Motor Without Fan Assembly
33
Motor (Without Fan) Removal Diagram
34
Intelligent Controller Removal and Replacement
36
Sensor Block and Switch Replacement
36
Basic Drive Depot Maintenance
39
Overview
39
Section I
39
Theory of Operation
39
Z Simplified Basic Drive Data Flow
39
Basic Drive Control and Motor Circuits Block Diagram
40
Power Circuits
42
Write Circuits Block Diagram
43
Clock Circuits
44
Power-Up and Reset
44
Select Circuits
44
Stepper Circuits
44
Capstan Motor Control
45
Track Selection Circuits
45
Motor Driver Board
46
Write Circuits
47
Performance Testing
49
Read Check
49
Scope
49
Testing Suspected Drives
49
Write Check
49
Read Check for Serviceability
50
Testing Reparied Drives
50
Write Check for Serviceability
50
General Precautions
51
Removal and Replacement
51
Repair Procedures
51
Troubleshooting Tips
51
Field Replaceable Parts
52
Stepper Motor and Read/Write Head
52
Controller/Host Interface
53
Intelligent Controller Depot Maintenance
53
Online
53
Overview
53
Section I
53
Request
54
Reset
54
XFER (Transfer)
54
ACK (Acknowledge)
55
DIRC (Direction)
55
Ready
55
Reset Timing Diagram
55
Controller Data Flow
56
Exception
56
Host Commands
56
Intelligent Controller Block Diagram
57
Select Command Data
58
5-Volt Detect
59
Data Bus Circuits
59
Online Control
59
Reset Control
59
Command Common Data Flow
60
Request Control
60
Select Command Data Flow
60
Position Command Data Flow
61
Select Command Timing Diagram
61
Position Command Timing Diagram
62
Write Data Command Data Flow
62
Write Repositioning Diagram
64
Read-Af Ter-Write Error Sequence Diagram
66
Write File Mark Command Data Flow
66
Write File Mark Command Timing Diagram
68
Read File Mark Data Flow
69
Read Data Command Timing Diagram
70
Read Status Command Data Flow
72
Host Sequencer
73
Read Sequencer
74
Buffer Address Counters
75
Read Operation Data Flow
76
The Write Logic Data Flow
76
Write Operation Data Flow
76
Read Logic Data Flow
79
The Phase Locked Loop and Data Separator
80
Read Sequencer
82
Performance Testing
86
Read Check
86
Scope
86
Testing Suspected Intelligent Controllers
86
Write Check
86
Read Check for Serviceability
87
Testing Repaired Intelligent Controllers
87
Write Check for Serviceability
87
General Precautions
88
Repair Procedures
88
Scope
88
Troubleshooting Tips
88
Parts Lists
91
Assembly, Main PWB Parts List
94
Al-3 Assembly Motor PWB
98
Al-4 Intelligent Controller Board Parts List
100
A2.1 Scope A2-1
107
Logic Diagrams
107
Mnemonic Glossary
107
Appendix III

119
- Adjustment and Alignment Check Procedure
  119
- Electrical Adjustments
  120
- Basic Operations
  125

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