User`s manual

AEC-67160M Ultra160 SCSI Adapter

Chapter 4 Troubleshooting

If you install the AEC-67160M and it does not function properly, follow the

troubleshooting below.

1. Check power supply.

When starting to check the malfunction devices, you should check the

power status (ON / OFF).

2. Check host adapter.

Verify the adapter card is seated in its slot on the motherboard.

3. Check all connectors and cables.

Check power connector, SCSI connector, IDE connector, device power

connector, and ribbon cable are connected well. Ribbon cables are easily

damaged because of un-proper fold. You can try a new cable known to be

good. Make sure no connector pins are bent. Verify pin 1 on the interface

cable is aligned with pin 1 on the drive and host adapter.

4. SCSI ID conflict.

If you have multiple SCSI devices, please make sure that ID of the SCSI

device do not duplicate. To reduce the chance the ID switch malfunction, it

is recommended to test it individually.

5. Poor external cable problems.

This may happen if the daisy chained with many SCSI device and some of

the external cables are not the high density 50 pins (or 68pins UW-SCSI)

cables. The 25pin to 50 pins SCSI cable has weak grounding, so if the

daisy chained with more SCSI device to system through the 25/50 pins

SCSI cable and having intermittent failure, it is recommended that you

change this cable with another better quality one.