| 摘要 |
An information processing apparatus which has an apparatus main body having an operation panel and a display. A main control unit is detachably attached as a board into the apparatus main body and controls the whole apparatus such as a copying apparatus, a facsimile apparatus, or printer. A detecting circuit is provided for the apparatus main body and detects a connecting state of the operation panel of the apparatus main body and the main control unit. When the operation panel is not connected to the main control unit, the apparatus displays an error message by the display. The detecting circuit detects the connecting state by checking whether the operation panel has received an initialization command from the main control unit within a predetermined time after the turn-on of the power source or not.
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