Mtu Diagnostic Specifications - Fujitsu M2488 Product Manual

M2488 PRODUCT GUIDE
This appendix contains the Magnetic Tape Unit (MTU) DIAG Specifications (SCSI/RS-232C).
H-1 OUTLINE
For the M2488 test routines, such as DIAGs for the life test and evaluation, are provided in the servo
microcode. Some routines that are used for factory automatic testing are provided as DIAGs.
This specifications describes how to activate the routines through SCSI or RS-232C interfaces, and how
to output the execution result.
H-2 HOW TO EXECUTE THE DIAG
H-2.1 SCSI interface
Activate the MTU DIAG from the SCSI interface using the SEND DIAGNOSTIC command. Output
the DIAG execution result data using the RECEIVE DIAGNOSTIC RESULTS command. The
parameter for activating the MTU DIAG requires 480 bytes. When the DIAG has been completed,
512 bytes of data are transferred as the execution result.
H-2.2 RS-232C interface
The MTU DIAG is activated from the RS-232C interface using an exclusive command. The DIAG
execution result data is also output to the RS-232C using the exclusive command. The MTU DIAG
activation parameter requires 480 bytes. After the DIAG has been completed, 512 bytes of data is
transferred with the results.
H-2.3 How to execute the DIAG for the MTU
The CP executes the DIAG for the MTU as follows:
1) Transfers the DIAG parameter to the servo microprocessor unit. (480 byte)
2) Activates the MTU DIAG.
3) Receives the DIAG result data.(512 byte)
For these commands, refer to the Drive Controller-Drive Firmware Interface Specification.
H-3 M2488 DIAG STRUCTURE
The M2488 diagnostic tests can be classified into five types:
1. RD/WRT: Ten diagnostic tests to check read and write
2. LD/UNLD: Two diagnostic tests to check loading and unloading
3. ACL TEST: Two diagnostic tests to check the autoloader
4. TESTMODE: Diagnostic test to measure operations
5. COMBINATION: Running test by combining up to ten commands
These tests are presented in the following tables.
April 1997
APPENDIX H

MTU DIAGNOSTIC SPECIFICATIONS

CG00000-011503 REV. A
MTU DIAGNOSTIC SPECIFICATIONS
H-1