DEC a-Series Installation And Setup Manual page 34

Troubleshooting
Table 3-1: System Troubleshooting, continued
Problem
System boots automatically
when you don't want it to.
Target boot device not
listed in the SRM display
system configuration.
No response to keyboard
commands.
3–6 Installation and Setup Guide
Possible Cause
System is set to autoboot.
Loose power and/or data
cable.
SCSI bus too long.
SCSI drive not set as drive
0.
SCSI termination is done
incorrectly.
Keyboard is password
protected.
Keyboard is not connected.
Keyboard is connected to
the mouse port.
Action
For DIGITAL UNIX or OpenVMS
users: When SRM starts, press [Ctrl/C]
to stop the autostart countdown. Type
>>>auto_action halt to change
a variable.
For Windows NT users: When
È
AlphaBIOS starts, press a to stop
the autostart countdown. Go to Setup
to change a variable.
Secure all signal and power cable
connections.
Alter SCSI bus to correct length in
compliance with the 1.5-meter
limitation for combined cable and
signals on the circuit board.
Reset SCSI drive as drive 0.
Terminate the extreme ends of each
signal.
Make sure that there are two, and only
two, terminators.
Make sure there is no extra
termination.
Check that there is active termination
only.
Enter the keyboard password, if
supported by your operating system.
Connect the keyboard to the keyboard
port.
Connect the keyboard to the keyboard
port.