REMOVE:
(Remove steps are prefixed
by the letter "R").
Disconnect cable
Ra
from XMTR RF
OUT connector.
P/O SHELF
Disconnect RF OUT
Rd
cable.
Tilt top of PA forward
Re
approx 45˚ to clear RF
OUT connector.
Remove PA from card
Rf
cage.
Figure 5 - 27 UD-51( ) Power Amplifier Removal and Replacement
5-66
P/O SHELF
RF OUT
FRONT PANEL
DC MON
GND
PWR ALM
TEMP ALM
DC MON ADJ
PWR ALM ADJ
10.5V DC
POWER AMPLIFIER
RF
MON
RF
IN
Loosen thumbscrews
Rb
and remove front panel.
Loosen mounting screws
Rc
and slide PA toward front
of card cage to access
RF OUT connector.
INSTALL:
(Install steps are prefixed
by the letter "I".
Install replacement PA
Ia
in shelf and tighten
mounting screws
(torque to 19 in. lbs).
Connect RF OUT
Ib
cable.
Connect RF IN cable
Ic
to XMTR RF OUT
connector.
Reinstall PA front
Id
panel and tighten
thumbscrews.
MDR-1066
09/08/05