Digital Equipment TA81 Manuals

Manuals and User Guides for Digital Equipment TA81. We have 1 Digital Equipment TA81 manual available for free PDF download: User Manual

Digital Equipment TA81 User Manual (141 pages)

Tape Subsystem

Brand: Digital Equipment | Category: I/O Systems | Size: 9 MB

Table of Contents
10
Introduction
15
Chapter 1 Subsystem Description
16
General
16
Related Documents
17
Unit Variations
19
Tape Transport
19
Basic Features
20
Special Features
20
Tape Path
20
Tape Media Requirements
22
Subsystem Overview and Specifications
22
Interface Cabling
22
Performance Evaluation
27
Tape Formats
27
GCR Representation of Data Written on Tape
28
Speed Modes and Speed Selection
29
TU81 Expected Performance
30
Performance Hints
31
Adaptive Speed Control and Buffering
33
Functional Description
34
Transport Control System
36
Interface System
36
TU81 Interface
36
TA81 Interface
37
Power Supply
37
Physical Description
38
Tape Deck
38
Air Bearings
38
Tape Deck Components
38
Magnetic Head Assembly
39
Major Transport Assemblies
39
Tape Cleaner
40
BOT/EOT Assembly
40
File Protect Sensor
40
Power Switch
40
Cover Interlock
40
Electronic Logic Cages
40
Pneumatic Pump/Air Filter
41
Power Supply and Cooling Fan
41
Control Panel
41
ASCII Port Test Panel
41
General
42
Control Panel
42
TU81 Control Panel
42
Operator Controls
43
Diagnostic Controls
43
Special Controls
43
Operator Controls
44
Diagnostic Controls
45
Special Controls
46
Port Switch Operation
47
ASCII Port Test Panel
47
Operator's Hints
47
Operating Procedure
47
Inserting the Write-Enable Ring
47
Threading and Loading the Tape
48
Write-Enable Ring
48
Unloading the Tape
50
Manual Mode
50
On-Line Mode
51
Pump Shutdown
51
Corrective Action
51
Corrective Actions
52
Chapter 3 Customer Diagnostics
53
General
53
Operator Troubleshooting
53
Error Reporting
54
Operator Diagnostic Procedure
54
Power-On Health Check
54
Diagnostic Test 01
55
Unit Number
57
Chapter 4 Care and Preventive Maintenance
58
Magnetic Tape Basics
58
Magnetic Tape Care
59
Tape Storage
60
Magnetic Tape Handling
61
Relative Size of Tape Contaminants
63
Customer Responsibilities
65
Customer Maintenance
65
Magnetic Tape Transport Cleaning Kit
66
Reflective Tape Markers
67
Cleaning the Transport
68
Magnetic Head/Tape Path Components
68
Magnetic Heads
69
Air 'Bearings
69
Inspection of Tapes and Equipment
70
Uneven (Stepped) and Even Wind
70
Long Term Storage
71
Shipping Magnetic Tapes
71
Accessories and Supplies
72
Ordering
72
Digital Repair Service
72
Chapter 5 Installation
75
General
75
Site Planning
75
Space Requirements
75
Power Requirements
76
Environmental Requirements and Limits
76
Tools Required
76
Unpacking and Inspection
76
Floor Loading and Routing
76
Unpacking
77
Unpacking the Transport
77
Removing the Transport from the Shipping Pallet
78
Inspection
79
Operation Preparations
80
Mechanical Installation
80
Rear Shipping Bracket
80
Removing the Front Shipping Bar
81
Cabinet Assembly
84
Rear Stabilizer Installation
85
Side Stabilizers
86
Electrical Connection
87
874 Power Controller
88
Grounding
89
TU81-To-Host Interfacing
89
Turnkey Configuration
91
TU81-To-Host External Cabling
91
Tape Deck Access and Internal Cabling
91
DD-On Configuration
92
Address Selection Scheme
95
UNIBUS Grant Continuity Card
96
UNIBUS NPG Jumper
97
Installing the I/O Cables on the CPU Bulkhead
98
TA81-To-HSC Interfacing
99
TA81 Interface Cabling
100
TA81 Cabling Connections
100
TA81-To-HSC External Cabling
101
TA81 Tape Deck Access and Internal Cabling
101
Resident Diagnostics
102
M8739 Status Checking
102
VAX-Based Diagnostics
102
VAX Data Reliability On-Line Diagnostic
103
Basic Operating Instructions
103
Acceptance Test Example
105
PDP-11-Based Diagnostics
106
Basic Operating Instructions
106
Hardware Parameters
107
Software Parameters
107
TA81 Acceptance Diagnostics
107
Resident Diagnostics
107
Subsystem Level Diagnostics
108
In-Line Exerciser (!LEXER)
108
Booting the HSC
109
Maximum Error Number
109
Running ILTAPE Example (Test 01)
110
Running ILTAPE Example (Test 05)
110
Introduction
111
Required Tools and Supplies
111
Parts List (Hardware Kit)
112
Carton Contents
113
If Parts Are Missing
114
If You Need Help
114
Before You Begin
114
Unpacking and Set up
117
Removing Ground Stud from Rear Door
118
Releasing Pivot Pin to Remove Rear Door
119
Removing Front Bezel
120
Mounting the Chassis Slide Brackets to the Right-Side Chassis Slide
121
Mounting the Chassis Slides to the Tape Drive's
122
Hole Locator (Right Side
123
Extended, Locked Chassis Slides
125
Securing the Disk Drive to the Chassis Slides
127
Adjusting the Filler Panel
129
Plugging in the Disk Drive's Power Cord
130
Routing the Disk Drive's Power Cord
131
Mounting the I/O Bulkhead Module
133
Routing the SDI Cables
135
SDI Cable Connections
136
Mounting the New Stability Label
138

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