Receive Diagnostic Results Command; Diagnostic Data Return Bytes - Seagate ST8741J Maintenance Manual

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Testing SCSI Interface Drives
TABLE 2-8. TYPICAL INQUIRY DATA (Contd)
Byte/Bit 7
J
6
J
5
1
4
1
3
l
2
1
1
1
0
31 Product Identification
ASCII blank (20H)
32 Revision Number ASCII blank (20H)
33 Revision Number
ASCII blank (20H)
34** Revision Number First ASCII
*
(XXH)
35** Revision Number Second ASCII
*
(XXH)
* Drive capacity can be 736 MB, 850 MB, or 1.2 GB
** These two bytes indicate two-digit microcode revision
Receive Diagnostic Results Command
The RECEIVE DIAGNOSTIC RESULTS command requests that analysis
data be sent to the initiator following completion of a SEND
DIAGNOSTICS command. Diagnostic data return bytes are shown in
table 2-9.
TABLE 2-9. DIAGNOSTIC DATA RETURN BYTES
Byte Description
o
Additional Length (MSB)
1 Additional Length (LSB)
2 FRU Code (Most probable)
3 FRU Code
4 FRU Code
5 FRU Code (Least probable)
6 Error Code (MSB)
7 Error Code (LSB)
83325720 D
TROUBLE ANALYSIS
2-43