(6) Loosen the three captive screws on the
(3) Loosen the twelve 1/4-turn fasteners
outside of the chassis which secure the module to the
which secure the bottom cover.
left side.
(4) Remove the cover.
(7) Remove the module from the chassis.
(5) Under the chassis, unplug the module
(8) Replace the module by performing steps
cable connector P1 from the chassis socket, XA19 (fig.
(1) through (7) above in reverse order.
g. Removal and Replacement of High Voltage
(6) From the outside left side of the unit,
remove the six screws which secure the module.
(7) Remove the module from the chassis.
(8) Replace the module by performing steps
(1) Loosen the eight captive screws on the
(1) through (7) above in reverse order.
front panel of the power supply.
j.
Removal and Replacement of Power Supply
(2) Open the power supply drawer.
(3) Loosen the twelve 1/4-turn fasteners
(1) Loosen the eight captive screws on the
which secure the top cover and remove the top cover.
front panel of the power supply.
(4) Loosen the twelve 1/4-turn fasteners
(2) Open the power supply drawer.
which secure the bottom cover and remove the bottom
(3) Loosen the twelve 1/4-turn fasteners
cover.
which secure the top cover.
(4) Remove the top cover.
remove the two nuts and washers which secure the two
(5) Remove two screws from the right side
high voltage leads.
module holding strap.
(6) From under the chassis, remove the four
(6) Remove the strap.
screws which secure the module to the chassis.
(7) Loosen the captive screws securing
NOTE
modules A6, A8, A10 and A12 to the chassis.
When removing module A14 it will be
(8) Remove modules A6, A8, A10 and A12.
necessary to loosen the capacitor C1
(9) From the right outside of the chassis,
mounting bracket in order to have
remove the four screws which secure the blower and
access to the module screws on the
mounting ring.
bottom of the chassis. Remove the
(10) Lift the blower and mounting ring part way
four screws holding the capacitor
out of the chassis.
bracket and move the capacitor
(11) Slide back the insulating boot and then tag
aside.
the three wires to the blower; use the yellow dot as a
(7) Remove the module from the chassis.
reference point.
(8) Replace the module by performing steps
(12) Remove the three screws which secure
(1) through (7) above in reverse order.
the wires to the blower and remove the wires; remove
h. Removal and Replacement of Filament Module
the blower from the chassis.
(13) Separate the mounting ring from the
(1) Loosen the eight captive screws on the
blower by loosening the four screws and the clamps
front panel of the power supply.
which secure it.
(2) Open the power supply drawer.
(14) Replace the blower by performing steps
(3) Loosen the twelve 1/4-turn fasteners
(1) through (13) above in reverse order.
which secure the top cover.
(4) Remove the top cover.
5.21.
Removal and Replacement of Power Supply
(5) Unscrew and disconnect the three high
voltage connectors from the rear of the module.
a. On the power distribution panel place the
(6) Loosen the four captive screws which
associated PA circuit breaker to the OFF position.
secure the module to the chassis.
Check that the AC POWER indicator on the power
(7) Remove the module from the chassis.
supply is extinguished.
(8) Replace the module by performing steps
b. On the power supply place the START and
(1) through (7) above in reverse order.
BLOWER circuit breakers to the OFF position and the
OPERATE-STANDBY switch to the STANDBY position.
i.
Removal and Replacement of Start Module
c. Loosen the eight captive screws on the front
panel of the power supply.
(1) Loosen the eight captive screws on the
d. Pull on the two handles to extend the power
front panel of the power supply.
supply from the rack.
(2) Open the power supply drawer.
5-31