DISKDRV

The disk drive might be failing.

1. Is the device location information available in the Service Action Log?
   • No: Continue with the next step.
   • Yes: To exchange the failing item, see Disk unit recovery procedures. This ends the procedure.
2. Find the direct select address and the device address. See System reference code (SRC) address formats.
3. See Finding part locations and find the diagram of the system unit or expansion unit. Use the direct select address and the device address to find the location of the disk unit.
4. Is the SRC reported on the control panel?
   • No: Continue with the next step.
   • Yes: See Hardware SRC formats. The two rightmost characters of word 2 define the SRC format. Use the correct SRC format to locate the function that contains the characters tttt lmmm, where:
     • tttt = Type number
     • l = Level
     • mmm = Model

     Then go to step 6.

5. Remove the disk unit to determine the part number. To exchange the disk drive, see Disk unit recovery procedures. This ends the procedure.
6. Using the type information, go to Part number catalog to determine the part number. If you do not know the type, remove the disk unit to determine the part number. To exchange the disk drive, see Disk unit recovery procedures.