Read/Write Problems; Clearance For Service; Packaging For Return To Sony - Sony DDS-4 Product Description Manual

4. OPERATION
3. The drive powers up properly and loads and unloads tapes but will not respond to any SCSI commands.
A. If SCSI bus reset does not cause the drive to reset (same as power-on self test):
- Check the SCSI cable connectors
- Check SCSI cable pin one is aligned with the SCSI connector pin one
- Check for a broken cable or defective connector
- Try another known good SCSI device in the same location.
B. If SCSI bus reset causes the drive to reset then the problem is with the SCSI bus addressing or termination.
- Check that the SCSI bus ID jumper is set for the proper address
(See Section 3.1.1.)
- Check SCSI bus termination
The two SCSI devices at the ends of the bus should be terminated
No other units should have terminators installed
Note: The strength of the SCSI bus signals can be affected if too many terminators are installed (Signal drivers can be
damaged as well)

4. 5. 2. 2 Read/Write Problems

To prevent read/write errors, follow the cleaning recommendation in section 4.5.
If a read/write error occurs, a combination of the following steps should correct the problem.
- Remove the tape.
- Clean the drive with the DDS cleaning cartridge.
- Load a new tape in the drive.
- Retry the operation.
Note: If these steps do not correct the problem the drive may be defective and should be returned to Sony for service.

4. 5. 3 Clearance for Service

All servicing is performed only after removal of the SDT-10000/SDT-11000 from its mounting.
It is recommended that in mounting the drive into a chassis provisions should be made to allow easy access to the
mounting screws (see Figure 2-2).

4. 5. 4 Packaging for Return to Sony

The drive should be returned in its original packaging.
Sony will not take responsibility for shipping damage caused to an improperly packaged drive.
4 - 10 SONY SDT-10000/SDT-11000 DDS Tape Drive