Installation Guide

2 = Stack number indicator 5 = Console port
3 = Management port 6 = Stacking ports
The rear panel of the Summit X770-32q switch includes:
• Five replaceable fan modules
• Two power supply bays for either AC or DC power supplies (see Summit 550 W AC and DC Power
Supplies on page 188).
• Two mini-BNC connectors labeled OUT for connecting a Building Integrated Timing Supply (BITS) or
GPS timing source:
◦ 1 PPS frame output
◦ 10 MHz output
1
2
3
1 = Fan modules 3 = mini-BNC connectors
2 = Power supply
Summit X770 Series Switch LEDs
The following sections describe the meanings of the LEDs on the Summit X770 series switches.
Table 60: X770 Front Panel LEDs
Label or Type Color/State Meaning
M (Management) Slow blinking green (1 Hz) Normal operation
Fast blinking green (2 Hz) Power-on self test (POST) in progress
or
Switch diagnostics are running
Steady green POST passed: system is booting image
Blinking amber System is disabled: POST failed or system
overheated
O No external power is attached
FAN
1, 2, 3, 4, 5
Steady green Normal operation.
Blinking amber Failure.
O No power.
Summit X770 Series Switch LEDs Summit Switches
156 Summit Family Hardware Installation Guide