Manx – a catalogue of online computer manuals
RA81 Disk Drive Maintenance Guide
| Company: | Digital Equipment Corporation |
| Part: | AA-M879B-TC |
| Date: | 1983 |
| Keywords: | |
Table of Contents
- 1 Introduction
- 1.1 Scope
- 1.2 Related Documentation
- 2 Removal and Replacement
- 3 Adjustments
- 3.1 Introduction
- 3.2 Belt Tension Adjustment
- 4 Drive-Resident Diagnostics
- 4.1 Introduction
- 4.2 Diagnostic Terminal Connection and Setup
- 4.3 Diagnostic Commands
- 4.4 Diagnostic Utility Commands
- 4.4.1 Diagnostic Loop Mode
- 4.5 Diagnostic Error Reports
- 4.6 Exiting Diagnostic Monitor Mode
- 5 Fault Isolation
- 5.1 Introduction
- 5.2 Subsystem Error Message Interpretation
- 5.2.1 Error Message Status Line Interpretation
- 5.2.2 Real-Time Drive State (RTDS) Interpretation
- 5.3 Troubleshooting Procedures and Tips
- 5.3.1 Basic Drive Troubleshooting
- 5.3.2 LED Indicators
- 5.3.3 Power Supply Troubleshooting
- 5.3.4 HDA Formatting Procedure
- 5.3.5 HDA Identification
- 5.3.6 HDA Fault Isolation
- 5.3.7 HDA Substitution Procedure
- 5.3.8 HDA Shipment Procedure
- 5.3.9 Write-Protect Function Test
- 5.3.10 Spindle Motor Thermal Time-outs
- 5.3.11 Changing a Drive Unit Number
- 5.3.12 RA81 Signal Diagram
- 5.4 RA81 Drive Check-out Procedures
- Appendix A Hexadecimal Number Conversions
- Appendix B Diagnostic Sequence Lists
- Appendix C Subsystem Run Diagnostics
- Appendix D Run Diag Test List
- Appendix E System Fault Codes
- Appendix F Front Panel Fault Identification
- Appendix G Error Code Troubleshooting Table
- Appendix H FRU Part Number List
- Appendix I Diagnostic Terminal Instructions