Determining Where to Start

Use the following to determine the adapter configuration and select the proper procedure:

• If there are external cables attached to the adapter, start with the "External Bus PTC Isolation Procedure" for your type adapter. The procedures are found in this chapter.
• If there are no external cables attached, start with the Internal SCSI-2 Single-Ended Bus PTC Isolation Procedure.
• If there is a combination of external and internal cables start with the "External Bus PTC Isolation Procedure" for your type adapter. The procedures are found in this chapter. If this procedure does not resolve the problem, continue with the "Internal Bus PTC Isolation Procedure" for your type adapter. The procedures are found in this chapter.