User's Manual

2 – General Description
Chassis Controls and LEDs
59042-06 A 2-3
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2.1.1.2
Placing the Switch in Maintenance Mode
To place the switch in maintenance mode, do the following:
1. Isolate the switch from the fabric.
2. Press and hold the Maintenance button with a pointed tool for 2–4 seconds.
When the Input Power LED alone is illuminated, release the button.
3. After approximately 1 minute, the POST begins illuminating all chassis
LEDs.
4. When the POST is complete, the chassis LEDs extinguish leaving the Input
Power LED and the Heartbeat LED illuminated. The Heartbeat LED
illuminates continuously while the switch is in maintenance mode.
To exit maintenance mode and return to normal operation, momentarily press and
release the Maintenance button to reset the switch.
2.1.2
Chassis LEDs
The chassis LEDs shown in Figure 2-3 provide status information about switch
operation. Refer to ”Port LEDs” on page 2-5 for information about port LEDs.
Figure 2-3. Chassis LEDs
2.1.2.1
Over Temperature LED (Amber)
The Over Temperature LED provides status information about the air temperature
inside the switch. This LED illuminates to indicate that the switch logic circuitry is
overheating. Refer to Section 5 Diagnostics/Troubleshooting for information about
troubleshooting over temperature conditions.
Over Temperature LED
(Amber)
Fan Fail LED
(Amber)
Heartbeat LED
(Amber)
Input Power LED
(Green)