5
Checking the Hardware Installation
Check Items for Cable Installation
b
NO.
Check Item
1
All cables are connected securely and reliably. Pay special attention to the communication cable
connections and cable connections at the bottom of the cabinet.
2
Different types of cable, such as power cables, PGND cables, feeders, optical fibers, and signal cables
are separately bound.
3
The connectors of the RF cables are fixed in position. An incorrect connection may cause an abnormal
voltage standing wave ratio (VSWR).
6
Check Items for Electrical Connections
c
NO.
Check Item
1
All self-made PGND cables are copper-based with the proper wire diameters. No breaking device such
as a switch or fuse is allowed for the electric connection of the grounding system. No short circuit is
allowed.
2
The PGND cable is securely connected and the AC lead-in cable and cables in the cabinet are correctly
connected according to the electrical design of the power system. The screws are tightened. In addition,
the inputs or outputs are not short-circuited.
3
The redundant part of the power cable or PGND cable is cut rather than coiled.
4
The terminals at two ends of each power cable or PGND cable are securely soldered or crimped.
5
The bare wires and the terminal handles at the wiring terminals are coated with heat shrink tubing.
6
A flat washer and a spring washer are well mounted on each OT terminal.
Checking the Power-on State of a BBU
Indicators
NOTICE
•
The device must be powered on within seven days because it is unpacked. The power-off duration cannot exceed 48 hours
in the later maintenance.
•
The power supply switch on the right side of the BBU is turned off.
Board
Indicator
Normal Status
PMU
RUN
Blinking
ALM
Off
PSU
Power supply
Steady green
Faulty
Off
UMPT,
LMPT,
UBBP,
LBBPd4
RUN
On for 1s and off for
1s
ALM
Off
ACT
On
UPEU
RUN
On
FAN
STATE
Blinking green (on
for 1s and off for 1s)
Start
Turn on the external power switch
End
Are the external
input power in the BBU
normal?
Power on the BBU
No
No
Rectify faults
Rectify faults
Yes
Yes
Are the LEDs on
the boards in the
BBU normal?
