Huawei DBS3900 Installation Manual page 131

LampSite
Site Maintenance Guide
Item
Indicators
Electrostatic
discharge (ESD)
wrist strap
Maintenance Items for the Power System and Grounding System
Table 2-3
Table 2-3 Maintenance items for the power system and grounding system
Item
Power cables
Voltage
PGND cables
Issue 05 (2015-01-15)
Check Frequency
Monthly or quarterly
Quarterly
lists the maintenance items for the power system and grounding system.
Check Frequency
Monthly or quarterly
Monthly or quarterly
Monthly or quarterly
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Copyright © Huawei Technologies Co., Ltd.
2 RHUB3908 Maintenance Items
Operation
Check whether the
indicators on the
equipment are
working properly.
Check the ESD wrist
strap in either of the
following ways:
l Use an ESD wrist
strap tester to
check the ESD
wrist strap.
l Use a multimeter
to test the ground
resistance of the
ESD wrist strap.
Operation
Check the power
cable connections.
Use a multimeter to
measure the voltage
of the power supply.
Checks whether the
PGND cables and
ground bar are
securely connected.
Reference
Standard
For details about the
indicator status, see
RHUB3908 Ports
and Indicators in
LampSite Hardware
Description.
If you use an ESD
wrist strap tester, the
GOOD indicator is
on. If you use a
multimeter, the
ground resistance of
the ESD wrist strap
ranges from 0.75
ohms to 10 ohms.
Reference
Standard
The power cables are
securely connected
and not deteriorating.
The joints are not
corroded.
The voltage is in the
permissible range.
The joints are secure
and not corroded.
The PGND cables
and ground bar are
not deteriorated and
are protected from
corrosion.
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