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HP 9800 SERIES Service Manual

HP 9800 SERIES
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1-10 General Information
Self-Test
During installation you may wish to check the electrical performance of the drive. The drive
can
be
checked with or without a disc installed. To conduct the self-test, follow this proce-
dure:
1.
Remove the front cover of the 9895A, thereby exposing two toggle switches
and
an
LED
display
on
the front edge of the controller (see Figure 1-4).
2.
Press
and
release the right-hand toggle switch. The LED's should now start blinking,
indicating that the self-test routine has begun.
3. The routine should terminate with only the right-most
LED
lit.
Any other result indi-
cates a failure. Try running the self-test several times to verify pass or failure. This
self-test verifies operation
of:
a. HP-IB interface chip (PHI),
b.
Read-only memory,
c.
Z80 processor,
d. Random access memory,
e. Serializer / deserializer,
f.
Encoder,
g.
Decoder,
h. Stepping circuit and mechanism,
i. Rotational timing
(if
disc installed).
If the drive fails self-test, turn to the troubleshooting section of Chapter 3.
A more elaborate test, the
read/write
self-test, is run using the following procedure:
1.
Install a write enabled, formatted, scratch disc in each drive.
2.
Press
and
hold the left-hand switch.
3. While holding the left-hand switch, press
and
release the right-hand switch.
4.
Release the left-hand switch.
Read/write
self-test should now start.
This routine writes
on
the disc
and
then reads back, comparing what it read with what it
wrote.
It
checks the
read/write
circuitry
and
the CRC generator / checker, as well as every-
thing checked by the previous routine.
A final check, the read-only self-test, may
be
run using the following procedure:
1. Install a formatted scratch disc in all drives.
2.
Press
and
hold the right-hand switch.

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HP 9800 SERIES Specifications

General IconGeneral
CategoryStorage
Series9800 SERIES
TypeDisk Array
Drive Types SupportedSAS, SSD
RAID Levels Supported0, 1, 5, 6, 10
Host ConnectivityFibre Channel, iSCSI, SAS
RedundancyRedundant power supplies and fans

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