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Basic Troubleshooting 5-1
Chapter 5
Basic Troubleshooting
5.1 LED Error Indicators
There are system LED indicators are on both the front and back of the
AlphaServer DS20L, and each of the network connectors has status
LEDs.
Figure 1-2 in the first chapter identifies the system LED indicators on the front
of the system.
Table 5–1 Front System LED Status Indicators
LED Function
1
Steady red when system failure needs attention.
Off when the system is functioning properly.
2 Blinks amber to indicate system activity.
3
Blinks green when the system is in Standby mode.
Glows green to indicate that system power is on.
- AlphaServer DS20L 1
- Contents 5
- Preface 11
- Documentation Titles 12
- Information on the Internet 12
- Chapter 1 13
- Overview 13
- 1.2 Specifications 16
- Figure 1-1 Power Connectors 17
- 1.2.3 Environmental 18
- 1.2.3.1 Safety 19
- 1.2.3.2 EMC 19
- 1.2.4 Physical 20
- 1.2.5 Acoustical 21
- 1.3.3 Halt Button 24
- 10 56789 4 25
- Chapter 2 29
- Installation and Options 29
- Figure 2-1 Rear Connectors 30
- 2.2 Installing Options 31
- 2.3 Removal from a Rack 32
- 2.3.3 PCI Options 36
- . Remove the 36
- 2.3.5 CD-ROM 42
- TOP VIEW 43
- Chapter 3 45
- Operation 45
- 3.1.4 Alpha SRM Console 46
- 3.1.5 Power-Up Display 47
- 3.2 Operating Systems 48
- 3.2.1.1 auto_action 49
- 3.2.1.2 bootdef_dev 50
- 3.2.1.3 boot_file 51
- 3.2.1.4 boot_osflags 52
- 3.2.2 Booting Tru64 UNIX 56
- 3.3 Updating Firmware 65
- 1. Start LFU 66
- 3.3.2 LFU Commands 69
- Chapter 4 73
- Remote Management 73
- 4.2 Basic Remote Control 74
- 4.3 The WOL Utility 75
- 4.3.1 Operation 76
- 4.3.2 Restrictions 77
- 4.3.3 Commands 77
- 4.3.4 Exit Status 77
- 4.3.5 Error Conditions 77
- 4.3.6 Examples 78
- 4.3.7 Environment Variables 79
- Chapter 5 81
- Basic Troubleshooting 81
- 5.2 Halting the System 83
- 5.4 Fan Status Display 86
- Figure 5-3 Fan Locations 87
- Appendix A 89
- SRM Console 89
- A.3 Command Summary 92
- A.3.1 Commands: Syntax 94
- A.4 Show Commands 97
- A.4.2 Show Device 99
- A.4.3 Show hwrpb 101
- SRM Console A-15 103
- SRM Console A-17 105
- A.4.4 Show IDE 106
- A.4.5 Show Memory 107
- A.4.6 Show PAL 107
- A.4.7 Show Power 108
- SRM Console A-21 109
- A.4.8 Show Version 110
- See Example A–10 112
- Example A– 11 Boot Command 114
- A.8 Testing the System 116
- SRM Console A-29 117
- A.9 Set Commands 118
- A.9.2 Set Secure 119
- A.10 Secure Mode 120
- A.11 Clear Password 121
- A.13 Updating Firmware 123
- A.15.1 set envar 125
- A.15.2 show envar 126
- SRM Console A-41 129
- A.17 Reading a File 130
- A.19 Finding Help 132
- A.20.1 ac_action 135
- A.20.2 auto_action 135
- A.20.3 bootdef_dev 136
- A.20.4 boot_osflags 136
- A.20.5 com1_baud 137
- A.20.6 ew*0_mode 138
- A.20.7 ew*0_protocols 138
- A.20.8 os_type 139
- A.20.9 password 139
- A.20.10 pci_parity 140
- A.20.11 pk*0_fast 140
- A.20.12 pk*0_host_id 141
- A.20.14 sysvar 142
- A.20.15 tt_allow_login 142
- A.20.16 wol_enable 143
- Index-1 145
- Index-2 146
- Index-3 147
- Index-4 148
- Index-5 149
- Index-6 150
- Index-7 151
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