SCSI-2 Differential Adapter Probable Tripped PTC Causes

The following list provides some suggestions of things to check when the PTC is tripped:

• A shorted terminator or cable. Check for bent pins on each connector and removable terminator.
• Intermittent PTC failures can be caused by incorrectly seated cable connectors. Reseat the connector and flex the cable in an attempt to duplicate the fault condition across C1.
• Plugging or unplugging a cable or terminator while the system is turned on (hot-plugging).
• A shorted device.
• Single-ended devices are attached to the differential SCSI bus.