Huawei S7700 Hardware Description page 189

S7700 Smart Routing Switch
Hardware Description
Indicator/Button
ACT
Issue 02 (2012-09-10)
Color
Red
Green
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Description
If the indicator is on, it indicates that the board
is faulty.
If the indicator blinks every 2s (0.5 Hz), it
indicates that an alarm is generated because of
a fault on the CMU, fans or power.
If the indicator blinks every 0.25s, the output
power is insufficient.
Indicates the active CMU or the standby
CMU.
If the indicator is on, it indicates that the
CMU is the active one.
If the indicator is off, it indicates that the
CMU is the standby one.
7 List of Indicators
178