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Note
"
If a self-test error occurs, do not boot the operating system. The integrity
of the system cannot be assured. Use the diagnostics to find and eliminate
the cause of the error if you cannot identify a problem with the self-test.
If the computer fails the self-test only when it is cabled to an A-Series I/O
extender, make sure the extender is powered on. Also, when the computer
is cabled to an HP 12025NB I/O Extender, turning off the power to the
extender causes a powerfail shutdown of the computer that may appear to
be a computer failure.
Revision
4022
and later of VCP uses the following scheme to display the four-byte long error code on the 8 LEOs.
Preceding each byte of information a "travelling" LED pattem is displayed to indicate which byte of information is
going to be displayed. For example, the following LED sequence is displayed for the error code
302 201 023 021.
See Table
3-4
for a definition of all the error codes.
Octal Code
LED Display
4 0 -
0000000.
One travelling LED is displayed, then
302
•• 0000.0
First byte of error message is displayed
4 0 -
000000 ••
Two travelling LEOs are displayed, then
201
.000000.
Second byte of error message is displayed
4 0 -
00000 •••
Three travelling LEOs are displayed, then
023
000.00 ••
Third byte of error message is displayed
4 0 -
0000 ••••
Four travelling LEOs are displayed, then
021
000.000.
Fourth byte of error message is displayed
Figure 3-1. Sample Display of Self-Test Test 2 Error Code
Table 3-3. Self-Test Pass Indications
Octal Code
LED Display
Definition
007±:+005
000001.1
VCP program is running; VCP console connected and waiting for user input.
002±:;000
000000.0
VCP program is running; VCP console is not connected, that is, VCP is waiting for
the VCP console to respond to the first ENQ-ACK handshake.
001
00000001
A boot loader is running.
000
OOOOOOOO
User software is running.
200
10000000
Loader error. Probably a checksum error; change media on loading device.
020
00010000
Running Diagnostic Design Language (DOL) Program.
1
=
lit LED; 0
=
unlit LED; •
=
flashing LED
Service
3-7
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