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DECbridge 628
Digital DECbridge 628 Manuals
Manuals and User Guides for Digital DECbridge 628. We have
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Digital DECbridge 628 manual available for free PDF download: Problem Solving
Digital Equipment DECbridge 628 Problem Solving (96 pages)
Brand:
Digital Equipment
| Category:
Network Hardware
| Size: 1 MB
Table of Contents
Table of Contents
5
Preface
15
1 Introduction
17
General Description
17
Decbridge 500/600 Series in a Sample Configuration
17
Decbridge 500/600 Series Units
18
Typical Decbridge 500/600 Series Unit (I/O Panel)
19
Logic Modules Used in the Decbridge 500/600 Series
20
2 Problem Solving
21
Introduction
21
Normal Power up
22
LED Indicators after Power up
23
Self-Test Diagnostics (Overview)
24
Recommended Approach to Problem Solving
25
Problem-Solving Tools and Components
26
Running the Self-Test Diagnostics
26
Visually Inspecting the Bridge
26
Visually Inspecting the Bridge
27
Interpreting the LED Indicators
29
Problem Solving Via the Leds
29
If the Problem Still Exists
33
Problem Solving a Power-Off Condition
34
Problem Solving the FDDI Interface
35
Performing Loopback Testing
38
Preparing the Unit for Loopback Testing
38
Installing the FDDI Loopback Connector(S)
39
Installing the FDDI Loopback Connectors
39
Installing the ni Loopback Connector(S)
40
Installing the ni Loopback Connectors
41
Running the Loopback Test and Observing the Results
42
Returning to Normal Operation
42
Measuring the FI Power
43
Measuring the FI Transmit Power (Multimode)
44
Measuring the FI Receive Power (Multimode)
45
FDDI Transmit and Receive Power Calculation
46
3 Removal and Replacement Procedures
47
Introduction
47
Decbridge 500/600 Series Field-Replaceable Units
48
Preparing the Bridge for Servicing
49
Field-Replaceable Units
49
Power Cord and Interface Cable Removal
50
Removing and Replacing the Frus
51
Tools Required
51
Removing and Replacing Logic Modules
51
Removing Logic Modules
52
Replacing Logic Modules
53
Logic Module Removal and Replacement
53
Removing and Replacing the Card Cage
55
Removing the Card Cage
55
Replacing the Card Cage
56
Card Cage Removal and Replacement
56
Removing and Replacing the Power Supply
57
Removing the Power Supply
57
Replacing the Power Supply
58
Power Supply Removal and Replacement
58
Removing and Replacing the Fan Assembly
59
Removing the Fan Assembly
60
Fan Assembly Removal and Replacement
60
Replacing the Fan Assembly
61
Removing and Replacing the Backplane
61
Removing the Backplane
62
Replacing the Backplane
62
Backplane Removal and Replacement
63
4 Technical Information
64
Physical Description
64
LED Indicators
64
Decbridge 500/600 Series Switches and Indicators
66
Switches and Indicators
66
Circuit Breaker
67
Configuration Switches
67
Thinwire Interface
68
Indicators
69
Block Diagram Description
72
Simplified Block Diagram
72
AP2 (or AP) Module Description
73
QM Module Description
73
Module Description
73
NI Module Description
74
Power Supply
74
Power Supply Shutdown
75
Thermal Protection
75
DC OK Output Signal
75
Fan Assembly
76
Product Specifications
77
Physical Specifications
77
Electrical Specifications
77
Environmental Specifications
78
Cabling Specifications
79
Cable Specifications
79
Configuration Guidelines
81
General Guidelines
81
Bridge-To-FDDI Guidelines
81
Bridge-To-802.3/Ethernet Guidelines
82
AUI Interface
82
FDDI Connection Information
85
FDDI Connection Rules
85
FDDI Connection Rules Matrix
85
FDDI Connector Keying
87
Related Documents
88
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