Technical data

2.8.11 Audio Self-Test (T 11)
The function of the audio self-test is to test the system’s ability to send a beep
code to the speaker.
The following table lists the location of all audio functionality for the
VAXstation 4000 Model 60 and VLC systems:
VAXstation 4000 Model Audio Functionality Location
Model 60 Lights and switches module
VLC Graphics/audio frame buffer module
2.8.12 Synchronous Communication Self-Test (T 12) (Model 60 Only)
Note
If you use the Digital Services environment (SET DIAGENV 2), then
you must use an H3199 loopback.
Table 2–14 lists the tests that are included in the synchronous communication
self-test.
Table 2–14 Synchronous Communication Self-Test (12)
Self-Test Function
Checksum Checks the checksum; reads 128 KB ROM part and verifies
checksum.
Static RAM Checks the static RAM; writes, verifies, complements, verifies the
256 KB RAM.
MC68302 Performs the MC68302 test.
RAM Checks the RAM dual access; checks shared RAM bus arbitration.
EPROM Checks the EPROM dual access; checks EPROM bus arbitration.
Host interrupt Checks the host interrupt; verifies option can interrupt the CPU.
Host loopback Checks the host buffer loopback and interrupt; moves data from the
CPU to the communication option, loops it back and waits for an
interrupt.
Reset Resets the communication options and waits for an interrupt.
Refer to Section A.2.10 for a list of the synchronous communication test error
codes and to Section B.13 for a list of the synchronous communication test
diagnostic LED codes.
Diagnostic Testing 2–21