Bird Technologies Group 5PI616550 Manuale Utente
Manual 7-9415-1.4 Page 22
TX RX Systems Inc. 08/31/06
61-65-50 UserMan page 22 of 24
3) Reverse steps 2 and 1 to install the replace-
ment assembly. When replacing the RF cables
do not overtighten the SMA connectors. They
should be tightened just slightly more than hand
tight or to the specification of 7 in/lbs.
do not overtighten the SMA connectors. They
should be tightened just slightly more than hand
tight or to the specification of 7 in/lbs.
Card Cage Replacement
To replace the card cage follow the steps listed
below in sequential order. The required tools are a
#1 Phillips screwdriver with an extended shaft to
reach down far enough into the unit to loosen the
mounting screws.
To replace the card cage follow the steps listed
below in sequential order. The required tools are a
#1 Phillips screwdriver with an extended shaft to
reach down far enough into the unit to loosen the
mounting screws.
Note: Power to the SB II cabinet must
be turned OFF during the card cage
replacement process.
be turned OFF during the card cage
replacement process.
1) Disconnect the display/user interface assembly.
2) Disconnect 4 cables at the backplane of the
card cage which are assessable with the dis-
play/user interface board out of the way.
play/user interface board out of the way.
3) Remove the row of Phillips screws which hold
the card cage to the back plate. There is a row
of screws at the top and bottom of the cage.
of screws at the top and bottom of the cage.
4) To install a replacement cage perform steps 3
through 1 in reverse order.
RECOMMENDED SPARES
It is recommended that one spare of each of the
following assemblies be kept on hand for emer-
gency repair purposes; Power Supply 8-20667,
Uplink/Downlink Power Amplifier 3-20807, Mid
Level Amplifier Card 3-19576, Low Level Amplifier
Card 3-19935, Low Gain Amplifier Card 3-20294,
and Half-Gain Low-Level Amplifier Card 3-21035,
Attenuator Card 3-20208, Power Distribution Card
3-19833, Controller Card 3-19832, and the Display/
User Interface Assembly 3-19831.
following assemblies be kept on hand for emer-
gency repair purposes; Power Supply 8-20667,
Uplink/Downlink Power Amplifier 3-20807, Mid
Level Amplifier Card 3-19576, Low Level Amplifier
Card 3-19935, Low Gain Amplifier Card 3-20294,
and Half-Gain Low-Level Amplifier Card 3-21035,
Attenuator Card 3-20208, Power Distribution Card
3-19833, Controller Card 3-19832, and the Display/
User Interface Assembly 3-19831.
NOTE
Figure 13: Disconnecting the display/user interface assembly from the card cage.
Disconnect
ribbon cable
here