User's Manual

5-39
5.16 OC3/STM-1/ETH I/O INTERFACE REMOVAL AND REPLACEMENT
Use this procedure to remove and replace DX-35P OC3/STM-1 or DX-35R/S ETH I/O
Interface module.
a If radio is protected (hot-standby, space diversity, or frequency diversity,
use front panel OVRD controls on AE-37( ) Controller to lock on-line
XMTR, RCVR, and I/O (opposite side from failed I/O) on line.
b On front panel of controller module, press and hold ACO LT/OVRD switch
in
ACO LT (lamp test) position until TX, RX , and I/O On LINE LEDs on
front of controller flash (approximately 5 seconds wait).
c Release ACO LT/OVRD switch.
d Disconnect cables.
e Remove I/O Interface module from shelf.
f Install replacement I/O Interface module in shelf.
g Connect cables.
h On AE-37( ) Controller, toggle OVRD switch to disable override (unlocks
on-line XMTR and restores automatic switching functions).
i STOP. This procedure is complete.