Teledyne HPAC-2005, Руководство по эксплуатации

Страница: 71 / 156

3 RU SSPA Chassis Operations Manual 205356 REV T 71
Reflected Power ports. Lastly, remove the four (4) 4-40 x 3/8” socket head cap screws,
with lock and flat washers, that secure the M&C ribbon cable to the module, and
disconnect the ribbon cable from the M&C port.
The SSPA module is secured to the heat sink plate by ten (10) 6-32 x 1-3/8” socket
head cap screws. The module is also attached to the waveguide output via socket
head cap screws [Four (4) 6-32 x 5/8” for Ku-band; eight (8) 10-32 x 5/8” for C-band]
with flat and lock washers. These must all be removed before the SSPA module can
be removed from the chassis.
3.1.3 Power Supply Module Removal
Certain 3RU SSPA Chassis use an internal power
supply module, which may be removed from the
front panel.
To remove a power supply module, simply loosen
the retaining screw on the front panel by turning
counter-clockwise then flip the top of the retaining
clasp away from the module. Grasp the handle and
pull the module firmly out of the power supply
chassis. See
Figure 3-9
.
To replace a module, slide the new unit slowly into
the empty slot in the housing until it is properly
seated, taking care not to slam or unnecessarily
force the unit into the slot. Secure the module by flipping the retaining clasp up until it
is flush with the module, then tighten the retaining screw.
3.1.3.1 External N+1 Redundant Power Supply
Amplifiers may be configured with an external N+1 redundant power supply. Each
power supply chassis can house up to four (4) power supply modules, and is fitted with
one more power supply module than necessary to power the amplifier.
A power supply modules can be removed and replaced from the power supply chassis
without taking the amplifier offline.
To remove a power supply module, lift up on the restraining tab on the front panel.
Grasp the handle and pull the module firmly out of the power supply chassis.
To install the power supply modules into the chassis, place a module into one of the
empty bays of the chassis making sure that the release knob is located at the lower left
side of the opening and the handle is at the top. Slide the module slowly into an empty
slot in the chassis until it is properly seated, taking care not to slam or unnecessarily
force the unit into the slot.
Figure 3-9: Remove Power
Supply Module