Inside the Type 146 Unit
Chapter Three: Overview
58
The HC High Power configuration
is with no jumper on JP3.
Shorting jumpers are stored on JP4.
The HC Low Power
configuration is with a
shorting jumper on JP3.
Figure 17: Jumper Placement on the Hot Cathode Board
12. Place the shorting jumper on JP3 to configure the board for a low power hot cathode.
13. Slide the board back inside the unit so that the connectors protrude through the opening
in the rear panel.
14. Line the board up so that the female connector on the board is directly over the male
connector on the mother board.
15. Gently push the board onto the male connector.
16. Turn the unit over so that it is bottom-side up.
17. Replace the Phillips screw that fastens the board to the 146 unit.
16. Replace the bottom cover by inserting it into the grooves provided, and firmly sliding it
towards the front of the unit. Replace the seven (7) screws that fasten the bottom cover.
The center screw on the bottom cover is slightly off center to avoid interfering with a
connector if a board is positioned in slot 5. Be sure to align the cover correctly.
17. Carefully turn the unit right-side up.
18. Replace the top cover by inserting it into the grooves provided, and firmly sliding it
towards the front of the unit. Replace the seven (7) screws that fasten the top cover.
The center screw on the top cover is slightly off center to avoid interfering with a
connector if a board is positioned in slot 5. Be sure to align the cover correctly.
19. Replace the four (4) Phillips screws on the outside corners of the rear panel.
20. Plug in the power cord.
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