Ricoh SP 8400DN Field Service Manual page 1772

Ricoh a3 size black and white laser printer.

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[B]: PET film

[C]: Transparent conductive film

[D]: Base glass

[E]: LCD panel

Self-Check (multi-touch calibration) mechanism

With the Multi-touch calibration in the self-check function, the touch panel is automatically calibrated using the

results of touches to the top left and bottom right positions.

The values of "EVR_X", "EVR_Y", "X_MAX", and "Y_MAX" are used for internal processing. They do not

indicate the positions or distance of the touched points. There is no problem unless there is a huge difference

between the values of the first calibration and the second calibration.

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