User's Manual

Field Replaceable Units Wideband Radio Head
4-6 044-05251 Rev A
Field Replaceable Units
The following units can be replaced in the field on-site by a qualified technician with experience
maintaining RF equipment:
• FON
• PSU
• WRH
FON
To replace a FON PCBA, proceed as described in the Table 4-3.
Table 4-3 FON Replacement Procedure
PSU
To replace a PSU, proceed as desribed in the Table 4-4.
Table 4-4 PSU Replacement Procedure
Step Action
1 Open WRH door and secure
2 Locate power connector on FON and remove connector from PCBA
3 Verify all cables on FON are labeled before disconnecting, then disconnect all cables. CAUTION: Do
not look into the end of any fiber optic cable. Be sure to cap fiber optic cables to protect the con-
necting end from damage.
4 Remove screws securing FON PCBA to FOU and remove PCBA
5 Replace FON PCBA in reverse order and apply power
6 Connect PC to OM Online port, login to FON and verify configuration and IP address. NOTE: Make
sure ‘Fiberoptical’ classmark in the FON Status window is checked, otherwise FON will not be opera-
tional.
7 Close WRH door and secure
Step Action
1 Open WRH door and secure
2 Disconnect main power plug from PSU
3 Disconnect power cable bundle from PSU
4 Loosen screws securing PSU using a 5mm Allen key and remove.
NOTE: screws are designed to not be removed completely from PSU.
5 Replace PSU in reverse order and apply power
6 Close WRH door and secure