MAINTENANCE
After total failure, the system ceases to operate and the green LED on the CPU/Memory CP may not flash.
Failure can also be verified by checking the LEDS on each CP.
If either a partial or total Common Control failure is detected, remove and then restore system power. This procedure forces the system to perform a warm restart.
If the failure exists after system restart, remove power again and reseat CP suspected of being faulty. (Be sure to press in all socketed devices to ensure a firm connection.) Restore system power. If a Common Control failure continues to exist, one of the CPs must be replaced. To determine which CP to replace, check the messages on the SAT and in the Error Log and check the LEDs on the CPs.
Common Control error messages sometimes appear on the SAT automatically during
For Release 1 systems, a Memory CP problem could be caused by (1) a fault in the frontplane connector to the Call Processor CP or (2) a problem on the Call Processor CP itself. A Memory CP problem does not necessarily indicate a fault in the Memory CP.
To replace a Common Control CP, follow the preceding instructions. Be sure to save translations on tape before removing power. For Release 1 systems, replacing either the Call Processor or Memory CP also requires that the frontplane connector be disconnected and then reconnected.
After replacing the CPU/Memory CP, it is mandatory to force a Cold Start or Limited Cold Start. The Cold Start initializes the new CPU/Memory CP with the system’s CP configuration as well as clears all status and error logs. Old information may have been stored on the replacement CP; therefore, you should then do a tape restore to restore to the original translations (Note! You must have a DTU to do this).
Circuit Pack Trouble
Most CP troubles result in user complaints. User complaints are discussed under “Clearing
