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9.3 TROUBLESHOOTING
A non-critical failure indicates an interruption potential in the LPS-O protection, but not a total loss. When a
non-critical failure occurs, the LPS-O non-critical alarm contact closes but the LED remains green. Turn off the
DC input power, then re-apply it. The WARN xxx message reappears if the failure still exists.
The non-critical failure message has the format WARN xxx. The xxx field is a numeric code that indicates the
nature of the failure. The WARN message remains on the display until a key is pressed or until the LPS-O
restarts successfully with no self-test failures. See Section 9.3.7 SERVICE SYSTEM STATUS FAILURES for
the list of warning codes and their meanings.
NOTE: As an alternative, the Information Status command can be used to display the warning type
directly on the LCD Display.
Use Section 9.3.7: SERVICE SYSTEM STATUS FAILURES or the Information Status command to isolate the
cause of the failure. Power down the LPS-O and replace the suspected board, if appropriate. Reapply power. If
the WARN message is gone the unit has been successfully repaired. If the message has changed, it is possi-
ble that another board requires replacement.
A system failure indicates a failure of a power system input or that the relay has been disabled by a user com-
mand. It is indicated by the closing of the non-critical alarm contact, by a red LED, or by the closing of the criti-
cal alarm contact. However, no LCD display is provided until the Information Status command is invoked.
Turn off and reapply the DC input power. The non-critical alarm contact is closed if the failure still exists. Use
the Information Status command to determine the cause of the trouble.
a) FAILURE MESSAGES: 960 CPU BOARD
•
FAIL-FLASH MEMORY
•
FAIL-STATIC RAM
•
FAIL-STATIC RAM CRC
•
FAIL-DPRAM 960 ACCESS
•
FAIL-I960 INTRPT CONTROLLER
•
FAIL-CPU TIMER
•
FAIL-CPU EEPROM
•
FAIL-CPU CAPRAM
•
FAIL-CPU RTC
•
FAIL-CPU WATCHDOG TIMER
9
•
FAIL-S/W PROT CONSTANTS
•
FAIL-S/W CONFG. LOGIC
•
FAIL-CONFIG S/W VERSION ERROR
•
FAIL-CPU SYSTEM IN RESET
•
FAIL-CPU SYSTEM SHUTDOWN
9-
6
9.3.5 SERVICING A NON-CRITICAL FAILURE
9.3.6 LOCATING THE DEFECTIVE BOARD
9.3.7 SERVICE SYSTEM STATUS FAILURES
•
FAIL-DO FEED BACK
•
FAIL-LUI LCD DISPLAY
•
FAIL-IRIGB
•
FAIL-TRIP CKT #1 CONTINUITY ERROR
•
FAIL-TRIP CKT #2 CONTINUITY ERROR
•
FAIL-TRIP CKT #3 CONTINUITY ERROR
•
FAIL-TRIP CKT #4 CONTINUITY ERROR
•
FAIL-TRIP CKT #5 CONTINUITY ERROR*
•
FAIL-TRIP CKT #6 CONTINUITY ERROR*
•
FAIL-CONFIG H/W MISMATCH
•
FAIL-NO DMA INTERRUPT
•
FAIL-RUNTIME SETTINGS AREA
•
FAIL-EEP CONTENTS ERROR
•
STAT-DO DISABLED HARDWARE
LPS-O Line Protection System
9 SERVICING
GE Power Management
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