User's Manual

Table Of Contents

EX7100 Technical Manual - Module Descriptions

Removal of the Transmitter module

1. Remove the CPU sub-module as previously described.

Remove the following connectors from the Transmitter PCB

PL101 (DC input), PL103 (connection to the PA), and PL107 (SMB connector, “Tx

RF out).

2. Remove the three stand-offs and the three M3 screws and washers that hold the

Transmitter module into the casting, then remove the Transmitter module, keeping

all fastenings in a safe place.

3. Carefully position the new Transmitter PCB into the casting taking care not to flex the

PCB as this can cause damage to the surface mounted components. Replace the

stand-offs and M3 PCB mounting screws and washers. Tighten the screws carefully.

4. Replace the CPU sub-module as previously described and reconnect connectors

PL101, PL103 and PL107 on the Transmitter module. Ensure that all cables are run

as they were prior to removal.

5. Inspect the EX7100 terminal to ensure that it is free of foreign material. Remove and

clean as required.

6. Connect the antenna to the terminal. (Caution:

do not proceed until this is done to

avoid damage to the PA module). Apply power to the EX7100 rear panel and switch

the terminal on.

7. If necessary, retune the Transmitter output filter (refer to Section 7.4.3 above).

8. Set the Transmitter, Receiver and RF Power Amplifier module configuration variables

(refer to Section 3 as required).

9. Return to normal operating mode and check that the link is correctly established. If

not refer to Section 7.4.2 above and Section 5 “Troubleshooting” as required.

10. Replace the bottom cover, taking care to tighten every screw. No screws should be

left over at the end of the job.

11. Re-install the EX7100 back into its rack and re-connect all necessary power,

signalling and antenna cabling.