HP 7942 Service Manual page 86

READOUT
(HEX)
2E
2F
30
31
32
33
34
35
36
37
38
39
3A
3B
3C
Table 4- 2. Disc Drive (Unit 0) Self -Test Subtest List (Continued)
SUBTEST
Service Information
7942 and 7946
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.
While attempting a write then read of one sector on surface 2, either the seek
or the write failed.
While attempting a write and then read of one sector on surface 2, either the
read failed, or the data read did not match that written.
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 diff eren t from that written.
While attempting a write then read of one sector on surface 3, either the seek
or the wri te failed.
While attempting a write and then read of one sector on surface 3, either the
read failed, or the data read did not match that written.
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.
While attempting a write then read of one sector on surface 4, either the seek
or the wri te failed.
While attempting a write and then read of one sector on surface 4, either the
read failed, or the data read did not match that written.
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.
While attempting a write then read of one sector on surface 5, either the seek
or the wri te failed.
While attempting a write and then read of one sector on surface 5, either the
read failed, or the data read did not match that written.
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.
While attempting a write then read of one sector on surface 6, either the seek
or the wri te failed.
While attempting a write and then read of one sector on surface 6, either the
read failed, or the data read did not match that written.
4-17