Availability:
     Level 4    , 'l'

  Quick Help:
     Scan Track for Servo Defects and ZAP, l[RdPositionOpt]

  Description:
    This command scans the target track for servo defects and ZAPs.

  Input Parameters:

    0 - Scan at Read Position option.
    
        If this parameter is entered, the scan will be performed at the read position,
        else the scan will be performed at the write position.
    
          Type:    Unsigned 8-bit value
    
          Range:   0 to 0xFF
    
          Default: None
    
  Output Data:

    If an error occurred, the following information will be displayed.
    
          "DiagError aaaaaaaa"
    
       where
    
          aaaaaaaa is the Diagnostic Error Code
    
  Revision History:

    0001.0000   Initial revision.
    0011.0000   Combined the PSG Diagnostic Error Codes (PSGDEC) and the Diagnostic External
                Test Service Error Codes (DETSEC) into a single set of Diagnostic Error Codes
                (DiagError).