HP Surestore 80fx Optical Drive and Library SCSI-2 Command Reference - Page 222

Jukebox SCSI-2 Commands Jukebox SCSI-2 Command Set Send Diagnostic Command (1DH) Table 3-31 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. Send Diagnostic Command CDB Byte 7 6 5 4 3 2 1 0 0 Operation Code (1DH) 1 Logical Unit Number Reserved (0) SelfTst DevOfL UnitOfl (0) 2 Reserved (0) 3 Parameter List Length (MSByte) 4 Parameter List Length (LSByte) 5 Control Byte (0) 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. Chapter 3 3-35