Sense Data Error Recovery Methods5-20 C141-C010Table 5.4 Error recovery processing procedures (3 of 5)Recoverymethod Recovery processing procedure12 1) Set the "Number of Retries" value in the MODE SELECT parameters at the "Default"value.2) Reissue the original command (Retry). (Note)3) If the error is not recovered from after the first retry, issue the REZERO UNIT command.4) Reissue the original command (Retry). (Note)5) If the error is not recovered from, perform one of the following.• When the sense key is "HARDWARE ERROR [=4]," perform recovery method 1.• When the sense key is "MEDIUM ERROR [=3]," implement alternate blockallocation processing (shown in Section 6.4).Note When the original command is the REASSIGN BLOCKS command, it may benecessary to reconfigure the defect list. For details, see the description of theREASSIGN BLOCKS command (Section 3.3.2).13 1) Generate the RESET condition or issue a BUS DEVICE RESET message for the IDDthat reported this error.2) After waiting 2 seconds or longer, reissue the original command (Retry), and if thespindle motor's start mode is set on "Start by Command," issue the START instructionby the START/STOP UNIT command ("Immed" = 0) before retrying.3) If the retry procedure (() does not terminate normally, perform recovery method 1.14 1) The MODE SELECT parameter is initialized at the "Save" value (if the "Save" valuedoes not exist, the "Default" value), so when it is necessary to set the inherentparameter, issued the MODE SELECT command.2) Reissue the original command (Retry).15 1) When not linked from the SET LIMITS command, the cause of this error occurring isthat write operations at the setting terminal are prohibited, so cancel release that andissue the original command. If it is impossible to release the write protected switch atthe system, perform recovery method 2.2) When linked from the SET LIMITS command, perform recovery method 2.16 1) Issue the LOG SENSE command and read the "Current" values in the LOG SELECTparameters.2) If the parameters' values are appropriate, reissue the original command.Note This error could also be caused by a UNIT ATTENTION condition being generated,caused by a programming error of another INIT, so when the value in the parameterread in ( is illegal, recovery method 2 should be performed, or the operations of theother INITs should be confirmed.17 If the PRIORITY RESERVE command issued by another INIT is proper in the system, performthenecessary recovery processing in the system. If not, perform recovery method 2.
