Ntak20 Power On Self-Test; Ntak93 Self-Test - Nortel Enterprise 1000 Reference Manual

Page 138 of 236

NTAK20 power on self-test

NTAK93 self-test

553-3023-211 Standard 1.00 June 2001
NTAK09 1.5 Mb DTI/PRI card
Table 30 provides the state of the NTAK09 LEDs during the self-test
procedure.
Table 30
NTAK09 LED states during self-test
Action
Power up system
Self-test in progress
The clock controller daughterboard LED is the second LED from the bottom
on the faceplate of the NTAK09 DTI/PRI card.
When power is applied to the NTAK20 clock controller, the LED is initially
off for two seconds. If the self-test passes, the LED turns red and flashes on
and off twice.
When the self-test is completed, the LED will remain red until the clock
controller is enabled. When enabled, the clock controller LED either turns
green or flashes green.
The NTAK93 DCHI daughterboard LED is the bottom LED on the faceplate
of the NTAK09 DTI/PRI card.
The NTAK93 DCHI daughterboard does not perform a self-test when power
is applied to it. When power is applied, it will turn red and remain steadily lit,
indicating the DCH is disabled. When the DCH is enabled, the LED will turn
green and remain steadily lit.
Self-tests of the NTAK93 daughterboard are invoked manually by commands
in LD 96.
LED State
Top five LEDs light for eleven seconds
Top five LEDs go out for one second
If the self-test passes, the top five LEDs flash
on and off three times.
If the self-test detects a partial failure, the top
five LEDs flash on and off five times
When the self-test is completed, the LEDs are
set to their appropriate states