Maintenance Object Repair Procedure
555-233-142
8-1232 Issue 1 May 2002
s. Error Types 1400, 1401 — Echo Cancellation errors are logged when:
■ Error 1400 - Echo canceller function failed. The Echo Canceller
Function test, which is executed by firmware, failed.
■ Error 1401 - Echo canceller memory failed. The Echo Canceller
Memory test, which is executed by firmware, failed.
Echo Cancellation is no longer being supplied by the board. Clear the
alarm using the following commands: busyout board UUCSS, test board
UUCSS long, release board UUCSS. If Test #1420 (Echo Canceler test)
fails, replace the circuit pack.
t. Error type 1537 — LAN Bus Timeout Error. This error occurs when the
circuit pack transmits too many bytes on the LAN bus for a single frame.
This condition may be caused by an on-board fault or by faulty data
received on one of the circuit pack’s external ports. If any of the ports on
this circuit pack are alarmed, refer to the repair procedures for those MOs.
If the error occurs three times within 10 minutes, the board is isolated from
the Packet bus and the board alarmed. To clear the alarm and restore the
board to the Packet bus, use the commands busyout board UUCSS,
reset board UUCSS, test board UUCSS long, release board UUCSS.
If the problem persists, and there are no PKT-BUS alarms or port alarms,
then replace the circuit pack.
u. Error Type 1538 — The hyperactive circuit pack is out-of-service and may
exhibit one or more of the following symptoms:
■ The common circuit pack level tests such as Test #50 and/or
Test #52 abort with error code 2000.
■ The tests run on the ports of this circuit pack return a NO-BOARD
result.
■ A busyout/release of the circuit pack has no effect on test results.
■ A list configuration command shows that the circuit pack and ports
are properly installed.
The circuit pack is isolated from the system and every trunk or port on this
circuit pack is placed into the out-of-service state. The system will try to
restore the circuit pack within 20-30 minutes. When no faults are detected
for 20-30 minutes, the UDS1 Interface circuit pack is restored to normal
operation. Every trunk or port of the UDS1 Interface circuit pack is then
returned to the in-service state.
If either the board is not restored to normal operation or the error recurs
after the board was restored to normal operation, escalate the problem.
v. Error Types 3073 to 3160 — For later releases of G3V4 and beyond, only
Error Type 3073 shows that this board is receiving slips and the AUX data
shows the last slip count reported.
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