Tait International Limited TBCK4B Manual Do Utilizador
DRAFT 4
TB9400 Installation and Operation Manual
Replacing Modules
95
© Tait Electronics Limited September 2011
8.2
Preliminary Disassembly
Hot-pluggable
Modules
Modules
The reciter, PA and front panel are hot-pluggable and can be removed
without powering down the whole
without powering down the whole
base station
. These modules can also be
removed without disrupting the system control bus communications with
the other modules in the subrack.
the other modules in the subrack.
Important
Before removing a PA, first disconnect the DC input, trans-
mit forward input and transmit reverse output, followed by
the RF output. After refitting the PA, reconnect the RF
output first, followed by the transmit forward input, trans-
mit reverse output, and then the DC input.
mit forward input and transmit reverse output, followed by
the RF output. After refitting the PA, reconnect the RF
output first, followed by the transmit forward input, trans-
mit reverse output, and then the DC input.
Disconnecting the
Power
Power
If you want to disconnect the power before working on the
base station
,
follow these steps.
Caution
Before disconnecting the battery supply leads from
the PMU, open the circuit breaker or disconnect the
supply leads from the battery.
the PMU, open the circuit breaker or disconnect the
supply leads from the battery.
1.
Turn off the AC
b
and DC
c
switches at the rear of the PMU.
2.
Also at the rear of the PMU disconnect the mains
d
and battery
e
supply leads, and the auxiliary DC supply lead
f
(if fitted).
b
c
d
e
f