Renesas Single-Chip Microcomputer M37900T2-RPD-E Informações Técnicas descarregar pdf (Página 25)

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(3) Replacing the Oscillator Circuit Boards

Figures 3.5 and 3.6 show how to replace the oscillator circuit boards. For the position of the oscillator

circuit board, see Figure 2.2 of M37900T2-RPD-E User's Manual.

(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 circuit board (see Figure 3.6).

(3) Lift off the oscillator circuit board.

(4) Attach the J1 connector of another oscillator circuit board for replacement to the connector

J1 (or J2) of the interface board M37900T-PRT.

(5) Secure the oscillator circuit board to the interface board M37900T-PRT with the screw.

(6) Replace the upper cover and secure it with the four screws.

Figure 3.5 Removing the upper cover

CAUTION

When Removing the Upper Cover:

• Always shut OFF power when removing the upper cover or setting the switches.

Figure 3.6 Replacing the oscillator circuit boards

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