Power-On Self Test Execution. 2 - HP Series 37 Reference Manual

Operating Instructions
POWER-ON SELF TEST EXECUTION
Immediately upon powering on the CPU, Power-on Self Test begins execution. The LED display will flash
"0", "I ", and "2" ( the "2" may not be visible) as the first Series of tests are loaded into the WCS. Then a
"5", indicating card 5 of the CPU, is displayed as the CPU tests He executed. Upon successful completion
of the CPU tests, a "B" will be displayed as the memory tests a.e executed. Upon successful completion of
the memory test, a "C" will be displayed as all of the I/O cards in the system are tested and the System
Console is speed sensed. If any of the tests fail, the failing assembly will be indicated in the LEOs as well
as on the System Console if the console path is operational. Table 2- 2 lists the LFO indications and error
conditions.
If PON completed without error, and Auto Warmstart was enabled, control will be passed to the loader
code.
If PON looping was previously specified from the test mode, the Power·-on Self Te,,! will be looped until
the loop count rearhes O. However, if the keyswitch was changed to the" 1" (NORMAL) position, the
looping feature is disabled and PON will be executed only once. When all tests have been successfully
completed Maintenance Mode is entered. The following prompt is displayed:
H
for
heip->
If any errors are reported on either the LED or the System Console contact your local HP Service
Representative.
LED Indication
Flashing "B"
Flashirig
"c"
Flashing
"c"
followed by
Flashing" I"
Flashing "5"
or
Steady "5"
Flashing "n"
Flashing "E"
followed by
Flashing "n"
Steady "0"
Steady "1"
Steady "21;
NOV 84
2-2
I
Table 2-2. LED IndicatIOns and Error Conditions
Meaning
Memory Test failed.
Console Failed to Speed Sense.
The Console TIC is bad.
The CPU card failed.
The Card in Slot n failed.
For each card in slot n of the extender that failed.
Processor is not executing micro-instructions or looping on first ones.
Proces<or hung in the initial WCS b00tup from RO\f
Initial WCS boot up from ROM failed the data integrity test.
A retry is being attempted.