CONTREX CX-1200 - Manual (Page 331)

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• The lids must be closed simultaneously to assure proper seating of the SOP component. If this is
not observed, the component will shift off center in the socket resulting in an unsatisfatory
electrical connection. Now, while maintaining a downward pressure on the lock, slide it
sideways to its locked position.
• Replace the CPU board and the back panel.
• Press the “Clear” key and the “9” key, then continue to press the keys while you apply power to
the CX-1200.
• The “Clear 9” procedure restores the factory default settings and automatically performs the
Power Up diagnostic routines.
• Reenter the values for your Control Parameters.