If you receive the symbolic FRU FWSCSI1, before replacing any system components do the following:

1. Ensure that the controller and each device on the SCSI bus is assigned a unique SCSI ID.
2. Ensure that the SCSI bus is properly terminated.
3. Ensure that the SCSI signal and power cables are securely connected and are not damaged.

The location code information is required to identify the ID of SCSI device failures as well as to indicate the location of the controller to which the device is attached. Check the system error logs to determine the location code information associated with the error code.

1. Replace the SCSI device. See Managing Devices, order number SA76-0107 for SCSI device FRU part numbers.
2. Replace the SCSI cable. See Site and Hardware Planning, order number SA76-0091 for SCSI cabling FRU part numbers.
3. Replace the SCSI controller. See Managing PCI adapters, order number SA76-0092 for SCSI PCI adapter FRU part numbers. If the failure is on an integrated SCSI controller, replace the I/O backplane (system backplane on certain systems), use the following table to determine the part number for the field replaceable unit (FRU):

   CCIN or FFC	Type and model	Part number	Description	Location code
   	9406-MMA, 9117-MMA	42R7352	I/O backplane	Un-P1

This ends the procedure.