AM2020/AFP1010 Troubleshooting Guide 50432 Revision A 8/13/97
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Corrective Action:
1) Confirm that what is in Full System Programming actually matches what is
installed in the panel.
2) Verify that the ISIB is properly mated to the ICA-4L.
3) Check the software EPROM number on the ISIB and verify that it is compat
ible with the other system boards.
4) Replace the EPROM.
5) Try a new ISIB. If it still does not work. Try replacing the ICA-4L.
6) If the trouble is still present, replace the CPU.
7) If the trouble does not clear, call Notifier Technical Support.
Each time the system is powered up, the CPU performs a test of the nonvolatile
RAM chip. This test checks the write capability of the chip. If a problem is
detected writing to the chip, this trouble will be generated.
Corrective Action:
1) Contact Notifier Technical Support for a replacement nonvolatile RAM chip.
Trouble Codes T28, T38, T48,...etc. apply to Loop Interface Boards 1 through 10
respectively. This trouble means that either the style of wiring (Style 4 or 6)
attached to the Loop Interface Board does not match what has been pro-
grammed or there is a short circuit in the field wiring. This trouble could also be
an indication that one of the SLC loop drivers on the LIB board has failed.
Corrective Action:
1) Confirm that the loop wiring matches the LIB programming.
2) Remove the field wiring from the LIB (in case there is a short on the wiring).
3) If the trouble does not clear, replace the LIB board.
4) If the trouble persists, call Notifier Technical Support.
Trouble Codes T29, T39, T49,...etc. apply to Loop Interface Boards 1 through 10
respectively. This trouble means that either the style of wiring (Style 4 or 6)
attached to the Loop Interface Board does not match what has been pro-
grammed or there is a short circuit in the field wiring. This trouble could also be
an indication that one of the SLC loop drivers on the LIB board has failed.
Corrective Action:
1) Confirm that the loop wiring matches the LIB programming.
2) Remove the field wiring from the LIB (in case there is a short on the wiring).
3) If the trouble does not clear, replace the LIB board.
4) If the trouble persists, call Notifier Technical Support.
T23 Catastrophic CPU
Nonvolatile RAM Failure.
T28 Style "6" Field
Wiring Loop #1 or
LIB #1 Abnormal.
T28 = LIB #1 T38 = LIB #2
T48 = LIB #3 T58 = LIB #4
T68 = LIB #5 T78 = LIB #6
T88 = LIB #7 T98 = LIB #8
TA8 = LIB #9 TB8 = LIB #10
T29 Style "4" Field
Wiring Loop #1 or
LIB #1 Abnormal.
T29 = LIB #1 T39 = LIB #2
T49 = LIB #3 T59 = LIB #4
T69 = LIB #5 T79 = LIB #6
T89 = LIB #7 T99 = LIB #8
TA9 = LIB #9 TB9 = LIB#10
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