Optical Drive and Library SCSI-2 Command Reference

Jukebox SCSI-2 Command Set
Send Diagnostic Command (1DH)
Chapter 3 3-35
Jukebox SCSI-2 CommandsJukebox SCSI-2 Commands
Send Diagnostic Command (1DH)
This command causes the library to perform certain predefined
diagnostic test/exercise routines.
The Request Sense (Table 3-5 on page 3-8) and the Receive Diagnostic
Results (Table 3-29 on page 3-33) commands can be used to get the
results of a test.
SelfTst When set to 1, the Poweron Selftest runs. This selftest
is equivalent to running Test Sequence 1, the Poweron
Sequence. The parameter list length must be 0.
When set to 0, the diagnostic specified in the parameter
list is run.
DevOfL Must be set to 1 for any test other than Selftest.
UnitOfl Must be set to 1 for any test other than Selftest.
Parameter List
Length The number of parameter bytes in the Data Out Phase
that describes the test to be run. The valid range is
between 2 and 10, although this value must be 0 if the
Selftest bit is set to 1. See Table 3-32 on page 3-36.
Table 3-31 Send Diagnostic Command CDB
Byte 7 6 5 4 3 2 1 0
0 Operation Code (1DH)
1 Logical Unit Number
(0)
Reserved (0) SelfTst DevOfL UnitOfl
2 Reserved (0)
3 Parameter List Length (MSByte)
4 Parameter List Length (LSByte)
5 Control Byte (0)