HP 9114A Manual page 19

Available Test
0 NOG TEST CURRENTLY
1 RAM/ROM/FDC/PIA TEST:
2 HP-IL CHIP TEST:
3 WRITE/READ TEST:
TROUBLESHOOTING
This test tests all of the preceding chips
in the order indicated. The RAM is tested, the
the LED is blinked twice to indicate it passed;
the ROM is tested, then the LED is blinked three
times to indicate it passed, etc.
This is an interface loop-back test which tests
the ability of the HP-IL chip to send and receive
data. The supplied HP-IL cable must be connected
between the input and output of the HP-IL port.
A worst case pattern is written on the disc.
The data is then read and compared to the originally
written data.
[ cauTiON |
A blank disc should be inserted during this test, as the data
and format will be destroyed by the testing procedure.
4 VERIFY TEST:
5 SEEK TEST:
6 MOTOR SPEED:
7 FORMAT:
All sectors in the data area of the disc are checked
for CRC errors.
The track zero detector is checked while the head
is moved on and off of track zero.
The period of the index pulse is measured to check
motor speed accuracy.
The disc is formatted. Data patterns are written
and verified.
[CAUTION]
A blank disc should be inserted during this test, as the data
and format will be destroyed by the testing procedure.
NOTE
A disc must be in the drive to perform test 3 through 7. Ensure that the disc is not write protected and that
it 1s an initialized scratch disc.
4-5