Testing The Leds - Nortel Passport 15000 Hardware Description

Testing the LEDs

Testing the operation of LEDs of a Passport 15000 or 20000 has no effect on
switch performance. During the test, the LEDs remain lit amber together for
about 10 seconds. If none of the LEDs is lit, no CPs are installed.
If a LED does not light, then one or more of the following conditions is
occurring:
• the green LED is burned out and software can verify if the part is actually
operational
• there is a problem in a cable assembly or a connection between the BIP
and the PIMs
• there is a problem with one of the power feeds to the BIP, but this means
a series of hardware LEDs would not be lit
• there is a problem in the backplane of the shelf
When the BIP is the power distribution unit for a Passport 15000, pressing the
LED test button verifies the operation of the LEDs on the alarm module.
When the BIP is the power distribution unit for a Passport 20000, pressing the
LED test button verifies the operation of the LEDs of other hardware parts by
lighting all of them on:
• the BIMs and alarm module of the BIP
• the cooling unit or units
• the fabrics in one or both switches
The PIM LEDs are indicators of power on or off and are not included in the
LED tests.
Chapter 7 Using status indicator LEDs and sounds 347
Passport 15000, 20000 Hardware Description 5.2S2