ZXG10 BS21 (V2.2) Compact Outdoor BTS for GSM Maintenance Manual
192
Confidential and Proprietary Information of ZTE CORPORATION
3.
Procedure
i.
Power off all the ETRM modules on the PSM module panel.
ii.
Strip off the 3-layer waterproof tape of the old tower amplifier by
the paper knife and sharp nose pliers, and remove the old tower
amplifier from the fixing clamp by the socket wrench.
Note:
Take care not to damage the insulation sleeve of the jumper.
iii.
Put the replaced faulty tower amplifier in a damp-proof bag, label it
and mark the type and fault. Store it properly in the carton. Label
the carton for easy identification and handling in the future.
iv.
Lift the new tower amplifier to the destination location with the
lifting tools.
v.
Fix it on the fixing clamp.
vi.
Connect end IN of the tower amplifier to the antenna jumper and
end OUT to the 7/8” feeder jumper. Reverse connection is
forbidden.
vii.
At the receiving interface of the AEM, use the current gear of the
multimeter to measure whether there is 60mA ~ 200mA current.
And then make waterproof treatments to the connectors.
Note:
Put two ends of the tower amplifier downwards to keep water out.
viii.
Power on all the ETRM modules again on the PSM module panel.
4.
Confirmation after replacement
i.
Observe the running status of the ETRM and AEM. If the indicator is
normal, the replacement is basically successfully.
ii.
Make a test call to check whether the BS runs normally after the
replacement.
Antenna Replacement
1.
Tools
i.
Adjustable wrenches
ii.
Paper knife
iii.
Sharp nose pliers
iv.
Diagonal pliers
v.
compass
vi.
Angle instrument
vii.
Lifting tools
viii.
Tools for safely climbing
