HP 2600fx - Optical Disk Drive Command Reference Manual page 304

BFHm A Bad Find Home bit of 1 indicates the Find Home
algorithm was started while the optical sensors were
inoperable. (For Byte 26, this attempt refers to Retry
algorithm.)
FHR A Find Home Recalibration bit of 1 Find Home
algorithm was invoked to recalibrate the mechanism
(For Byte 26, this attempt refers to Retry algorithm and
for Byte 30 it refers to Recovery algorithm).
Retry Count The total number of retry attempts that were
performed.
Recovery Count The total number of recovery attempts that were
performed.
Valid A "0" indicates that this and the next two bytes contain
invalid data. Valid in bytes 41 and 44 are only set
during the Exchange Medium Command.
ErrEn An Error Encountered bit of 1 indicates an error
occurred while the picker was enroute to this element.
CartEl A Cartridge in Element bit of 1 indicates the cartridge
associated with this move is in this element.
UnexpMt An Element Unexpected Empty bit of 1 indicates this
element was unexpectedly empty.
UnexpFl An Element Unexpected Full bit of 1 indicates this
element was unexpectedly full.
CartInv A Cartridge Inverted bit of 1 indicates the cartridge is
inverted from its state before the operation began.
ElRty An Element Required Retry bit of 1 indicates an
operation in or out of this element required one or more
retries.
Source Element
Number The Element Number to which the Source Element Bit
Map (Byte 35) refers.
Destination Element
Number The Element Number to which the Destination Element
Bit Map (Byte 38) refers.
Appendix B
Autochanger Error Codes
Additional Sense Data Format for Error Recovery
B-17