Contrex M-Traverse Manuel d'utilisateur télécharger pdf (Page 146)

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EPROM CHIP REPLACEMENT

The EPROM (Erasable Programmable Read Only Memory) chip is the software for the

M–Traverse. See Figure 4-5 for the EPROM's location on the CPU Board.

To replace the EPROM chip:

• Make a record of your current Control Parameter values; the replacement

chip contains default values that will replace your current values when you

perform the Clear/7 step.

• Turn off the power to the M–Traverse.

• Ground yourself - Static electricity can damage the CPU board and the

EPROM chip.

• Remove the back panel.

• Pull out the CPU board.

• Locate the EPROM chip and note the orientation of the Pin 1 Indicator.

• Carefully pry the EPROM that is being replaced from the socket.

• Carefully install the replacement EPROM in the socket, using the Pin 1

Indicator for correct placement. Be careful not to bend the EPROM pins.

NOTE: Incorrect placement can damage the EPROM.

• Replace the CPU board.

• Replace the back panel.

• Press “Clear” and “7” and apply power to the M–Traverse simultaneously.

• The M–Traverse restores the factory default settings and automatically

performs the Power Up diagnostic routines.

• Reenter your Code Parameters values.

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Contrex M-Traverse Manuel d'utilisateur Page 146