Figure 3-21 Indicators on the AR502EGRz-L
Numbe
r
Indicator/
Button
Color Description
1 and 2 4G/3G/2G
indicators
Green 2G indicator steady on: The wireless module is
working in 2G mode.
3G indicator steady on: The wireless module is
working in 3G mode.
2G and 3G indicators steady on: The wireless
module is working in 4G mode.
2G and 3G indicators off: The wireless module
does not work normally or is unregistered.
3 and 4 SIM Green Steady on: A SIM card is installed in the slot
and is working normally.
Off: No SIM card is installed in the slot.
5 ALM Red
l When no USB flash drive is connected to the
router, the ALM indicator works as the
system indicator:
– Steady red: A system fault has occurred
and requires manual intervention.
– Off: The system is running properly.
l When a USB flash drive is connected to the
router, the ALM indicator works as the USB
indicator:
Steady red: The system fails to be upgraded
or configured using the USB flash drive.
Huawei
AR500&AR510&AR531&AR550&1500&AR2500
Industrial Switch Routers
Hardware Description
3 Chassis
Issue 10 (2019-03-06) Copyright © Huawei Technologies Co., Ltd. 160
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