4-6
4.3.8 High Voltage Power Supply Removal
and Replacement
High Voltage Power Supply Board Removal:
1) Remove Top Cover. Position Transformer
Board in its servicing position to gain access
to screws. If desired, remove the Low
Voltage Power Supply.
2) Unlatch the Mains Power Cable, RF Amp
Cable, and Output Board Ribbon Cable.
3) Loosen the two screws holding the edge of
the board to the chassis.
4) Remove the screw to the handle, the screw to
the back panel, the two screws on the bottom
of the heatsink and slide out the heatsink with
the board attached.
High Voltage Power Supply Board Replacement:
1) Slide board with heatsink back into its previ-
ous position on the sheet metal chassis. The
heatsink has two pins that align into holes on
the sheet metal chassis.
2) Reinstall and tighten the six screws and latch
the three cables.
Note: Observe the position of the insulating sheet
under the High Voltage Power Supply. If the
insulating sheet is removed, replace it as shown.
It is important to maintain its function as a
dielectric barrier and to protect the ribbon cable
from the leads of the High Voltage Power Supply
Board.
Insulating Sheet
4.3.9 Rear Panel with Board Removal and
Replacement
Rear Panel with Back Panel Board Removal:
1) Remove Top Cover.
2) Unlatch the Ribbon Cable.
3) Remove the four screws on the bottom of the
Rear Panel, and the three screws shown on
the Rear Panel.
4) Slide the Rear Panel with Back Panel Board
back toward the handle and then down to
remove.
