NEW BRUNSWICK SCIENTIFIC innova 3100, Manual To Operations

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Innova 3100 Š M1231-0050 User’s Guide
5.11 Replacing the Main 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 sides and
three on the bottom), and allow the front panel to lie on its face.
3. Remove the temperature control board:
a. Disconnect the harness wiring from connectors J101, J102, J103 and J104 ( see
Figure 13 below ).
b. Remove the three 1/4” screws, the two nylon flat washers and the temperature
sensor ground lug.
c. 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 .
Figure 13: Control Board Replacement
4. Disconnect the harness wiring from connectors J1 and J2.
5. Remove the three hex spacers and 2 5/16 inch hex nuts.
6. Remove the green wire and keypad ground lead.