Nortel Communication Server 1000 Maintenance Manual page 159

Table 72
Clock controller commands
Command
DIS CC X
ENL CC X
SSCK X
TRCK XXX N
NTAK79/NTBK50 power on self-test
When power is applied to the NTAK79/NTBK50 2.0 Mb PRI circuit card,
the card performs a power-on self-test. The self-tests verify the operation
of most of the on-board hardware.
If all the self-tests pass, the upper five LEDs blink simultaneously three
times. If any of the self-tests fail, the LEDs do not blink. Only the OOS
LED illuminates. The corresponding error code is then printed on the TTY.
Self-test error codes
Table 73 "Self-test error codes" (page 159)
for the NTAK79/NTBK50 2.0 Mb PRI. These codes can be returned on
card power-up in the form "DTA105 L X" (where X is the failure code),
or during a self-test procedure in LD 60 as "DTI009 L X" (where X is the
error code).
Failure codes 1-14 are hardware failures on the NTAK79/NTBK50 card.
Codes 15-16 might be due to carrier span problems or lack of loopback
activation at the far end.
Table 73
Self-test error codes
Failure code
Copyright © 2003-2009 Nortel Networks
.
Action
Disable clock controller.
Enable clock controller.
Status of clock controller.
Set clock controller tracking where XXX can be:
PCK — track primary clock reference source
SCLK — track secondary clock reference source
FRUN — free run mode
Associated error
0
Self-test passed.
1
Self-test general failure.
2 LCAs failed to program correctly.
3
8031 code checksum failure.
4
8031 internal RAM failure.
5
8031 external RAM failure.
6
PAD RAM failure.
7
AO7 signaling interface failure.
Nortel Communication Server 1000
ISDN Primary Rate Interface Maintenance
NN43001-717 03.01
11 May 2009
System PRI maintenance tools 159
lists the self-test failure codes