7DQGEHUJ'DWD 6&6,&RPPDQGV
7DQGEHUJ'/73URGXFW0DQXDO 
5(&(,9(',$*1267,&5(68/76&RPPDQG&KFRQWLQXHG
The following data is returned by the drive as a result of the RECEIVE
DIAGNOSTIC command. Note that a REQUEST SENSE command should be
used to obtain more detailed information following a CHECK CONDITION on a
SEND DIAGNOSTIC command.
Bit
Byte
76543210
0 Controller Present Flag
1 Controller Error Flag
2 Drive Present Flag
3 Drive Error Flag
4 Media Loader Present Flag
5 Media Loader Error Flag
)LJXUH±5(&(,9(',$*1267,&5(68/76²'DWD)RUPDW
This information indicates which of the main components of the tape drive
subsystem may have failed diagnostic testing.
127(
Running BHC Diagnostics via the SEND DIAGNOSTIC command will not
have any affect on the flags in Bytes 0 – 5. Note that the BHC feature is
provided for use only by a trained service provider.