AT&T 3B2 Off-Line Diagnostic Manual page 529
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Also See for 3B2:
- Maintenance reference manual (422 pages) ,
- Operation manual (415 pages) ,
- Manual (54 pages)
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Phase Descriptions
Phase #18 Tests
Test Number:
1
Function:
This test initializes the NEC chip with the specify command.
Procedure:
The specify command is used to initialize the NEC chip.
Hardware Tested:
The NEC chip is tested.
Data Returned:
The number of the test that failed, the actual data, and the expected data are
returned.
Notes:
None
Test Number:
2
Function:
This test returns the heads to cylinder O.
Procedure:
The heads are returned to cylinder
o.
Hardware Tested:
The XDC is tested.
Data Returned:
The number of the test that failed, the actual data, and the expected data are
returned.
Notes:
None
Test Number:
3
Function:
This test seeks to cylinder O.
Procedure:
A seek is made to cylinder
o.
Hardware Tested:
The XDC is tested.
Data Returned:
The number of the test that failed, the actual data, and the expected data are
returned.
Notes:
None
Test Number:
4
Function:
This test determines the physical size of the disk by reading sector O.
Procedure:
Sector 0 is read.
Hardware Tested:
The XDC is tested.
Data Returned:
The number of the test that failed, the actual data, and the expected data are
returned.
Notes:
None
EXPANSION DISK CONTROLLER DIAGNOSTICS
11-35
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