Using Status Indicator Leds And Sounds - Nortel Passport 15000 Hardware Description

Chapter 7

Using status indicator LEDs and sounds

The status of hardware equipment on a Passport 15000 or 20000 switch is
indicated by a system of colored and shaped LEDs. A lit LED indicates one
status in one color. On the same type of part or assembly, the LED is always
in the same position relative to its mates. While the equipment is powered,
there is always one LED that is lit.
The status of most of the hardware equipment on a Passport 15000 or
Passport 20000 can also be checked in software. The 241-5701-520 Passport
7400, 15000, 20000 Troubleshooting and Testing describes the procedures for
verifying hardware status.
The number of LEDs for hardware status varies between parts. For the
descriptions and locations of the LEDs, see the appropriate section:
• "Follow-me LEDs" (page 344)
• "Status LEDs of a BIP alarm module" (page 346)
• "Status LEDs of a BIM" (page 349)
• "Status LEDs of a PIM" (page 350)
• "Status LEDs of a fabric" (page 352)
• "Status LEDs of a CP or an FP card" (page 356)
• "Status LEDs of a cooling unit fan" (page 362)
• "Status LEDs of a sparing panel" (page 365)
• "Turning off the audible alarm" (page 366)
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