Send Diagnostic Command (1Dh) - HP 2600fx - Optical Disk Drive Command Reference Manual

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.
Table 3-31 Send Diagnostic Command CDB
Byte
0
1
2
3
4
5
SelfTst
DevOfL
UnitOfl
Parameter List
Length
Chapter 3
7 6 5
Logical Unit Number
(0)
Parameter List Length (MSByte)
Parameter List Length (LSByte)
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.
Must be set to 1 for any test other than Selftest.
Must be set to 1 for any test other than Selftest.
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.
Send Diagnostic Command (1DH)
4 3 2
Operation Code (1DH)
Reserved (0) SelfTst
Reserved (0)
Control Byte (0)
Jukebox SCSI-2 Command Set
1 0
DevOfL UnitOfl
3-35