Yamaha A3000 Owner's Manual - Page 331
daisy-chain i.e., all devices other than the last device.
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Connecting external SCSI devices 3. Set the SCSI ID (0-7) of the external SCSI device. Select a SCSI ID that will not conflict with the other SCSI devices (including the A3000). When the A3000 is shipped from the factory, the SCSI ID is set to 6. When installing the internal hard disk, we suggest that you set the internal hard disk to a SCSI ID of 4. 4. Attach the terminator to the SCSI connector (the vacant one of the two SCSI connectors) of the last device in the daisy-chain. Alternatively, turn on the terminator switch of that device. 5. Make sure that the terminator switch is turned OFF for all other devices in the daisy-chain (i.e., all devices other than the last device). Important After installing a new hard disk or MO drive (or one which has been used by another computer device), connect your audio and MIDI devices, and turn on the external SCSI devices and the A3000. (If using an MO drive, insert the MO disk.) Then mount the disk (270), format it (254), and partition it into volumes (266). FYI Many articles and books concerning SCSI are available. However most of them discuss only the concepts or the specification, and do not tell you what to do if the system does not work when connected as described. The following paragraphs will provide more information about SCSI that will help you correct problems which may occur when SCSI devices are connected. Please read this material if you experience problems. Please be aware that when connecting SCSI devices, problems with termination and cabling can cause valuable data to be damaged. We regret that Yamaha can take no responsibility regarding any data which is lost. s Principles of termination Termination is the greatest source of potential problems in a SCSI system. Termination refers to an impedance-matched resistance which is connected to the bus to terminate the end of the data path. The "terminator" is the resistance required to provide termination. Appendix 329 Appendix