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(3) Replacing the Oscillator Circuit Boards
Figures 3.5 and 3.6 show how to replace the oscillator circuit board. For the location of the oscillator
circuit board, see Figure 2.2.
(1) Remove the four screws of both sides of this product and lift off the upper cover. (see Figure 3.5)
(2) Unscrew the screw connecting the oscillator board.
(3) Lift off the oscillator board.
(4) Insert the connector J1 of the oscillator board to the connector J1 (or J2) of the interface board
M37900T-PRT.
(5) Fix the oscillator circuit board to the M37900T-PRT board with the screw.
(6) Replace the upper cover and secure the four screws.
Figure 3.6 Replacing oscillator boards
Figure 3.5 Removing the upper cover
CAUTION
When Removing the Upper Cover:
•Always shut OFF power when removing the upper cover or replacing oscillator
boards.