Optical Drive and Library SCSI-2 Command Reference
Autochanger Error Codes
Additional Sense Data Format for Error Recovery
Appendix B B-17
 Autochanger Error Codes
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.










