(1)Block the related cells.
1) Start the site maintenance terminal system.
2) Click Cell and then double-click Change Cell Management State in the right pane to show the Change Cell Management State dialog box.
3) Select LOCKED. Determine the blocking priority and the response time according to the fault level and the actual requirements.
4) Click OK.
(2) Remove the TMA jumpers.
1) Cut a few rifts on the waterproof clay near the point of contact between the antenna and the jumper with a paper knife.
2) Scratch off the clay with fingers or a paper knife.
3) Remove the TMA jumpers.
(3) Remove the faulty TMA.
? If the TMA is fixed on a steel tower or pole by a steel fastening bracket, loosen the bolts at one end of the fastening bracket. Then pull out the other end from the gap under the bolt to free the TMA.
? If the TMA is fixed on the wall surface with expansion bolts, unscrew the bolts and remove the spring washers, flat washers, and TMA.
(4) Install a new TMA.
Install the new TMA at or near the original position and ensure that it is well grounded.
[note]After the expansion bolt is removed, it cannot be used again. You need to use a new expansion bolt to install the TMA.[/note]
(5) Install the jumpers to the new TMA.
Install the jumpers to the new TMA.
(6) Check whether the TMA is installed correctly.
If all the items listed as follows are confirmed, go to step 8. If any one is not confirmed, go to
? The connectors to the TMA are correct.
? The VSWR measured with the radio analyzer at the related jumper port on the cabinet top is less than 1.5.
(7) Troubleshooting.
Find the reasons for the faults by checking the items listed in step 6 in section 3.2.3 "Procedure " and handle the problems. If the VSWR is higher than 1.5, use a SiteMaster to locate the problem.
(8) Waterproof the outdoor connectors.
Ensure that the point of contact between the antenna and the jumpers is waterproof.
(9) Unblock the related cells.
In the Change Cell Management State dialog box, click UNLOCKED, and click OK.