Table of Contents
Advertisement
TROUBLESHOOTING
Self test
Self test routines can be initiated in 3 different ways and test the 2 different portions of the con-
troller board (3 1/2 -inch drive and the 5 1/4 -inch Winchester drive). Self tests are initiated as
follows:
1. At power-on a selftest of the processor, ROM, HP-IB chip, microprocessor RAM, buffer RAM,
and both drives is performed. The hard disc test includes reading and writing sectors, comparing
each byte written, seeking back and forth from track 0 to the maximum track, checking the
spindle speed, and checking that the ECC chip functions correctly by introducing errors and
correcting them.
2. With a host, the Initiate Diagnostic command can be given.lt runs a test similar to those at
power on.
A switch and/or jumper can be set which causes the HP 9133/340 to go into the diagnostic test
mode.
It
interprets the 4 bit HP-IB switch as a self test to perform. The LED is blinked (to show
that it works) and then the test, as selected by the address switch setting, is performed. A suc-
cessful test is indicated by the LED blinking. A failure causes the LED to stay on. The test
results are displayed for 5 seconds. If the test jumper (JMP8) is left on (0), the same test will be
performed again. When the service test jumper is no longer in the diagnostic test position, the
HP 9133/340 will go through the power-up sequence and will again be in the peripheral mode
of operation, waiting for commands over HP-IB.
The following table illustrates how to select the 'desired test using the HP-IB address switch and
the SELECT TEST jumper (JMP9).
TABLE 1
HB-IB
SELECT
SELECTED
ADDRESS
S~J
TEST JUMPER
TEST
0
0
0
-1
0
1
: ... 2
0
2
3
0
3
4
0
4
5
0
5
6
0
6
7
0
7
0
1
8
1
1
9
2
1
10
3
11
4
12
5
13
6
14
7
15
4-3
Advertisement
Table of Contents
