AT&T System 25 - Manual (Page 214)

MAINTENANCE
ERROR MESSAGE
AND DESCRIPTION
POSSIBLE SOLUTION
Illegal Instruction: This error is The Problem could be with the
logged when an illegal instruction ROM on the CPU/Memory CP. If
is encountered by the CPU. the problem persists, check or
replace CP.
Illegal Interrupt: CPU/Memory CP The CP may still pass the power-
problem. up test for the ROM. Check or
replace the CPU/Memory CF.
Illegal Port Command: (STARLAN Recoverable; no action required.
Interface CP) This error is an
isolated transient condition.
Illegal Port Interrupt: (STAR LAN Normally, this is a isolated
Interface CP) This error is an transient condition that i s
isolated transient condition. recoverable; however, if problem
occurs
t o o frequently, a
permanent alarm will be
generated. If problem persists,
check or replace CP.
Internal RAM Failure: Port CP Check port CF.
error while running background
non-destructive i n t e r n a l R A M
t e s t s .
I n t e r n a l Sanity Timeout: If the reset is not successful,
(STARLAN Interface CP) This reseat board. If the reseat fails,
error resets the CP. replace the CP.
Invalid Board Message: The port If the problem persists, check or
CP sent an up-link message that replace the port CP.
is not in the expected message
s e t .
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