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Top Page > Hardware Guide > Installing Options > Available Options > Caution when re-installing the controller board

Caution when re-installing the controller board

This section describes handling the controller board when installing options.

If you slide out the controller board to install units, carefully read the instruction to re-install the controller board.

The following may occur if the controller board is not properly installed:
- all control panel indicators are lit.
- no control panel indicators is lit.
- the error message appears on the display.