The problem is probably caused by communication difficulties between the SCSI host adapter and the recorder. If you have an SCSI host adapter with its own BIOS (in particular Adaptec 2940/3940 or 2940UW) and you find the following options in the controller BIOS (generally by pressing Ctrl+A when starting up the computer), try entering the following settings for the SCSI ID (device number) of your recorder (e.g. ID no. 5): 5):