Service Manual

GSM-204-523
Replacing a SURF module
31st Oct 01
Maintenance Information: Horizon macro outdoor
68P02902W04-A
CONTROLLED INTRODUCTION
Maint. 3–33
Installing a replacement SURF module
To install a replacement SURF:
1. Transfer the protective caps on the RF connectors from the replacement
module to the faulty module.
2. Insert the replacement SURF module firmly into place. Take care to avoid
trapping cables as the module is seated.
3. Tighten the four captive M6 torx screws to the correct torque (see
Overview of FRU replacement procedures in this chapter).
4. Reconnect the coaxial RF cables to the positions noted in the removal
procedure. Tighten to the correct torque (see Overview of FRU
replacement procedures in this chapter).
5. Reset the SURF circuit breaker button on the CBM.
6. Reset the CTU circuit breaker buttons on the CBM. Each RADIO STATUS
LED will flash green for about two minutes and then remain lit.
7. Enable the CTU transmit RF power by using the ins_device command
at the OMC-R, or from a PC connected to the MCUF. The Tx STATUS
LED (yellow) will be lit if the CTU is transmitting.
8. Notify the OMC-R of base station availability and log the maintenance
activity.
The SURF module is now installed and operational.