TM 11-5895-846-14
(2) Open the power supply drawer.
WARNING
(3) Loosen the twelve 1/4-turn fasteners
Voltages dangerous to life are
which secure the top cover.
present in the power supply
(4) Remove the top cover.
whenever the front panel AC POWER
(5) Remove two screws from the left side
indicator is illuminated.
On the
module holding strap.
power distribution panel, place the
(6) Remove the strap.
associated PA circuit breaker to the
(7) Loosen the two captive screws securing
OFF position. Check that the AC
the module to the chassis.
POWER indicator on the power
(8) Remove the module from the chassis.
supply is extinguished. On the power
(9) Replace the module by performing steps
supply, place the START and
(1) through (8) above in reverse order.
BLOWER circuit breakers to the OFF
d. Removal and Replacement of the Pulse
position and the OPERATE-STANDBY
switch to the STANDBY position.
(1) Loosen the eight captive screws on the
a. Removal and Replacement of Control and
front panel of the power supply.
(2) Open the power supply drawer.
(1) Loosen the eight captive screws on the
(3) Loosen the twelve 1/4-turn fasteners
front panel of the power supply.
which secure the top cover.
(2) Open the power supply drawer.
(4) Remove the top cover.
(3) Loosen the twelve /4-turn fasteners
(5) Remove the two screws from each of the
which secure the top cover.
two module holding straps.
(4) Remove the top cover.
(6) Remove the straps.
(5) Remove the two screws from the right
(7) Loosen the two captive screws securing
side module holding strap.
the module to the chassis.
(6) Remove the strap.
(8) Remove the module from the chassis.
(7) Loosen the two knurled captive screws
(9) Replace the module by performing steps
securing the module to the front panel.
(1) through (8) above in reverse order.
NOTE
e. Removal and Replacement of High Voltage
It may be necessary to remove
module A2 (step b below).
(1) Loosen the eight captive screws on the
(8) Remove the module from the chassis.
front panel of the power supply.
(9) Replace the module by performing steps
(2) Open the power supply drawer.
(1) through (8) above in reverse order.
(3) Loosen the twelve 1/4-turn fasteners
b. Removal and Replacement of Low Voltage
which secure the top cover.
(4) Remove the top cover.
(1) Loosen the eight captive screws on the
(5) Remove the two screws from the
front panel of the power supply.
applicable left side (A5, A7, A9, A11or right side (A6, A8,
(2) Open the power supply drawer.
A10, A12) module holding strap.
(3) Loosen the twelve 1/4-turn fasteners
(6) Remove the strap.
which secure the top cover.
(7) On the module to be removed, loosen the
(4) Remove the top cover.
two captive screws securing the module to the chassis.
(5) Remove the two screws which secure the
(8) Remove the module from the chassis.
right side module holding strap.
(9) Replace the module by performing steps
(6) Remove the strap.
(1) through (8) above in reverse order.
(7) Loosen the two captive screws which
f.
Removal and Replacement of High Voltage
secure the module to the chassis.
(8) Remove the module from the chassis.
(1) Loosen the eight captive screws on the
(9) Replace the module by performing steps
front panel of the power supply.
(1) through (8) above in reverse order.
(2) Open the power supply drawer.
Proceed to step 5-18J above.
(3) Loosen the twelve 1/4-turn fasteners
c. Removal and Replacement of High Voltage
which secure the top cover by turning each of them 1/4-
turn counterclockwise.
(1) Loosen the eight captive screws on the
(4) Remove the top cover.
front panel of the power supply.
(5) Unscrew and disconnect the three high
voltage connectors on the top edge of the module.
5-30