NEW BRUNSWICK SCIENTIFIC innova 3100, Manual To Operations

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New Brunswick Scientific User’s Guide
7. Remove the two screws that fasten the heat sink to the front panel bracket.
8. Lift the board out of the front panel and disconnect the keypad connector from J4.
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NOTE:
Be careful not to lose the five ¼ inch spacers or the gray insulator.
9. Position the gray insulator on the solder side of the new main control board and
connect the keypad connector to J4.
10. Make sure the five ¼ inch spacers are in place on the mounting studs and mount
the new main control board.
11. Reinstall the two screws that fasten the heat sink to the front panel brackets, but do
not tighten at this time.
12. Reinstall the three hex spacers, and tighten.
13. Reinstall the keypad ground lead and the green wire from the main chassis.
14. Reinstall the two 5/16 inch hex nuts and tighten.
15. Tighten the two heat sink mounting screws.
16. Reconnect the harness wiring to connectors J1 and J2. Make sure that each
connector is properly positioned (keys mate and no pins remain exposed).
17. Reinstall the temperature control board:
a. Snap the temperature control board onto the main control board, making sure
the board-to-board connectors mate properly.
b. Reinstall one ¼ inch screw and the temperature sensor ground lug at the corner
near J103. Reinstall the two remaining ¼ inch screws and nylon flat washers.
c. Reconnect the harness wiring to connectors J101, J102, J103 and J104. Make
sure that each connector is properly positioned (keys mate and no pins remain
exposed).
18. Reinstall the front panel and secure with the five screws.
19. Connect the power cord to the rear of the shaker.
5.12 Replacing the Temperature Control Board
1. Switch the shaker OFF and disconnect the power cord.
2. Remove the five screws that hold the front panel (two screws on the side and three
on the bottom); allow the front panel to lie down on its face.
3. Disconnect the harness wiring from connectors J101, J102, J103 and J104 ( see
Figure 13 above ).
4. Remove the three ¼ inch screws, the two nylon flat washers and the temperature
sensor ground lug.
5. Disconnect the temperature control board from the main control board, being
careful not to damage the board-to-board connectors. Apply force perpendicular
to the plane of the board.
Do not lift from one end .
6. Snap the new temperature control board onto the main control board, making sure
the board-to-board connectors mate properly.