Service manual

Self-Tests
Each module on the <REFERENCE>(XMI) and VAXBI buses has its own
self-test resident in ROM, except for the now optional <REFERENCE>(xbi_
plus) modules. At power-up, initialization, booting, or system reset, each
module runs its own self-test. The processor self-test completes within 10
seconds. The memory test completes in less than 60 seconds. Results of
self-test are printed on the STF line of the console self-test display.
Other Power-Up Tests
Following the modules’ self-tests, two additional tests are run and
reported in the self-test display: CPU/memory interaction tests and
<REFERENCE>(xbi_plus) tests.
All CPUs that have passed self-test run the CPU/memory interaction test.
The CPU/memory interaction test checks that the processors can access
memory. Memory also has a self-test that tests actual memory locations.
The CPU/memory interaction test is the second test for memory and serves
as a check on the memory’s <REFERENCE>(XMI) interface and on some
CPU logic that can be tested only by accessing memory. Results are printed
on the ETF line of the self-test display.
The optional DWMBB modules are tested by the boot processor before it
queries the VAXBI options for the results of their self-tests. Results from
both are printed on the XBI lines on the self-test printout (see Example 2–1).
Operator-Invoked ROM-Based Diagnostics
From the console prompt, you can enter RBD mode and run ROM-
based diagnostics. There are five diagnostics for the <REFERENCE>(xyp)
and four for the <REFERENCE>(XRP). Common tests include self-tests,
CPU/memory interaction tests, DWMBB tests, and memory tests; the
<REFERENCE>(xyp) has an additional secondary cache test, and the
<REFERENCE>(XRP) has an additional vector interaction test. In RBD
mode, you have the capability of running tests other than those in the
default suite, running multiple passes of tests, and receiving an error report
with information about any failing tests.
VAX Diagnostic Supervisor (VAX/DS)
From the console prompt, you can boot VAX/DS in standalone mode from
the TK tape, a CD server, or other media and run level 3 diagnostics. From
the operating system, you can run VAX/DS in user mode and run level 2R
diagnostics. Level 2 VAX/DS diagnostics may be run either in standalone
or user mode. See Table 2–9 for a listing of VAX/DS diagnostics.
Diagnostics 2–3