Digital Equipment DEC 3000 500X AXP, Service Information, Page: 17 / 112

Front View,
Continued
Table 1–1 DEC 3000 Model 500X AXP System (Front)
This Feature... Lets You...
!
, and
"
Removable media device
slots
Access devices that use removable storage media,
such as diskettes, compact disks, cassette tapes, or
cartridge tapes.
# DC OK light Check that all dc voltages are present on the power
supply.
$
On/Off switch Turn the system unit on ( | ) and off (0).
%
Fan failure indicator light Check whether a fan has failed.
&
Halt button Put the system in console mode.
' Diagnostic display View error codes that indicate potential system
problems.
(
Microphone input jack Connect for a microphone.
)
Speaker output jack Connect a speaker or headphone for audio output.
+>
Telephone jack Connect a telephone handset.
+?
Audio input jack Connect an audio input line.
1–7