Owner`s manual

Troubleshooting 4–5
4.2 Recovering from a Disk ISE Fault Condition
The RF72 disk ISE contains sophisticated circuits to detect and report
fault conditions. These faults are reported through a fault code display on
the SF72 storage enclosure OCP. The Digital Customer Services engineer
uses these codes and other error reporting mechanisms in the disk ISE to
pinpoint the source of a fault and return your RF72 to service in the least
amount of time.
If the Fault indicator illuminates to signal that the disk ISE has detected
a fault, perform the following steps to obtain an error code and clear the
fault:
1. Press the Fault button once. This causes the disk ISE to display an
error code at the disk ISE’s indicator set on the SF72 OCP.
The error code is displayed as a binary number in flashing lights
across the indicator set. A flashing indicator signifies a 1; a dark
indicator signifies a 0. The most significant bit of the binary number
is displayed on the Ready indicator. The Fault indicator counts as the
fifth most significant bit in this display.
2. Record this binary number for later reference by your Digital
Customer Services engineer.
3. Press the Fault indicator again. This commands the disk ISE to clear
the fault and return to normal operation. If the fault clears, you may
resume operation. Record the occurrence of the fault in the system log
as it may become relevant in future system fault analysis. If the fault
recurs, call Digital Customer Services.