Ntak20 Power On Self-Test; Ntak93 Self-Test - Nortel Meridian 1 Option 11C Manual

Page 58 of 100 DTI/PRI Maintenance

NTAK20 power on self-test

NTAK93 self-test

553-3011-310 Standard 13.00
Table 17 on page 58 provides the state of the NTAK09 LEDs during the
self-test procedure.
Table 17
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 will turn green
or flashing 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.
January 2002
LED State
Top five LEDs on for eleven seconds
Top five LEDs go off 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