Digital Equipment Digital AlphaStation 400 Series, User Information

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Contents
Passwords ..................................................................................................................... 1-13
2 System Overview
Introduction........................................................................................................................... 2-1
Motherboard.......................................................................................................................... 2-1
PCI Architecture............................................................................................................. 2-2
SCSI Controller .............................................................................................................. 2-2
Keyboard............................................................................................................................... 2-2
System Front View ................................................................................................................ 2-4
System Rear View ................................................................................................................. 2-6
3 Installing System Options
Introduction........................................................................................................................... 3-1
Removing the Side Panels ..................................................................................................... 3-1
System Unit Components ...................................................................................................... 3-3
Motherboard.......................................................................................................................... 3-4
Installing Additional System Memory ................................................................................... 3-6
Memory Configurations.................................................................................................. 3-6
Adding Memory Modules...................................................................................................... 3-7
Installing Expansion Boards .................................................................................................. 3-8
Adding Mass Storage Devices ............................................................................................. 3-10
Expansion Brackets ...................................................................................................... 3-10
SCSI Bus Length .......................................................................................................... 3-10
SCSI Addresses ............................................................................................................ 3-10
SCSI Termination ......................................................................................................... 3-11
Internal Termination .............................................................................................. 3-11
External Termination ............................................................................................. 3-11
Installing Devices in the Upper Drive Bay Area ........................................................... 3-12
Installing Devices in the Lower Drive Bay Area ........................................................... 3-17
4 Troubleshooting
Introduction........................................................................................................................... 4-1
Initial Troubleshooting .......................................................................................................... 4-1
Equipment Log...................................................................................................................... 4-2
General Troubleshooting ....................................................................................................... 4-2
Error Beep Codes .................................................................................................................. 4-7
Diagnostic LEDs ................................................................................................................... 4-7
Interpreting the LED Indicator Values ............................................................................ 4-8
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