User's Manual

Wideband Radio Head Field Replaceable Units
044-05251 Rev A 4-9
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 desribed 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
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, other-
wise FON will not be operational.
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