Cisco Explorer Series Staging Manual page 131

Stage LED Indicators
11 For Service
Disconnect (brick)
mode, the left LED
blinks eight times,
pauses for half a
second, and repeats.
For normal
operation, the left
LED blinks four
times, pauses, then
repeats only once.
734375 Rev H
TV Monitor
DHCTs with Three LED Indicators
Description
The DHCT (or host) is in either
Service Disconnect mode or
standard mode.
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