HP 7942 Service Manual page 87

Service Inf or rna tion
7942 and 7946
READOUT
(HEX)
3D
3E thru 55
56
57
58
59
SA
5B
5C
5D
5E
SF
60
61
62
63
64
4-18
Table 4- 2. Disc Drive (Unit 0) Self -Test Subtest List (Continued)
SUBTEST
After a successful write then read of one sector on every surface (with a
unique pattern for each surface), test produced a seek failure, a read failure,
or data different from that written.
Reserved for future use.
While attempting to read two sectors at the OD, either the seek or the read
failed.
While attempting a write then read of two sectors at the OD, either the seek
or the write failed.
While attempting a write then read of two sectors at the OD, either the read
failed, or the data read did not match that written.
While attempting to read one sector at the inner diameter (lD), either the
seek or the read failed.
While attempting a write then read of one sector at the ID, either the seek or
the wri te failed.
While attempting a write then read of one sector at the ID, either the read
failed, or the data read did not match that written.
While attempting to read two sectors at the ID, either. the seek or the read
failed.
While attempting a write then read of two sectors at the ID, either the seek
or the write failed.
While attempting a write then read of two sectors at the ID, either the read
failed, or the data read did not match that written.
GROUP 6
A read command was issued for a non -existent sector. The expected ID not
found error was not detected.
A read was performed with the DMA disabled. The expected overrun in
condition was not detected.
The drive was deselected and a seek command issued. The expected command
aborted status was not detected.
ECC correctable test, write full operation failed.
ECC correctable test, read operation failed or the data was miscorrected.
ECC uncorrectable test, write full operation failed.