HP 3000 Series Installation And Service Manual page 49

Maintenance
5-12. TROUBLESHOOTING
5-13. Customer-user Troubleshooting Procedures
If a malfunction is suspected, the customer user can verify
proper operation of the INP by initiating the self-test program
described in paragraphs 5-4 through 5-11. (Actually, the self
test is initiated automatically from time to time by the system
software during normal operations. When no malfunction is
reported, operations continue without the operator necessarily
being aware that a self test has occurred.)
I
CAUTION
I
Before manually initiating a self
test, be sure that no other
computer operations are in pro-
gress that may be destroyed by the
self-testing process.
There are two ways of manually initiating the self test. One way
is by using the INP Diagnostic/Support Monitor (DSM) to invoke
the self test. This technique requires a simple interactive
dialogue on a computer terminal between the customer user and
DSM. The custaner-user/DSM operations are described in the HP
30010A
I
30020A Intelligent Network Processor Diagnostic
Procedures Manual.
The other way of initiating the self test is to press the RESTART
switch. (Refer to the Installation Verification instructions in
Section II
fo~
details on this method of initiating the self
test. Also, the exact location of the INP within the card cage
can be obtained from the installation notation in the configur-
ation section of the System Support Log.)
The self test checks most of the circuitry of both INP PCA
boards. If, upon completion of the self test, the self-test LED
indicator lights (figure 5-1) are displaying 0 and 7 (only the
two lights at each end are lighted), there is no detectable hard-
ware malfunction within the INP PCA boards. If any other
combination of lights is being displayed or if you still suspect
a malfunction beyond the physical limits of the PCA boards, call
your Hewlett-Packard Customer Engineer (CE).
5-6