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Same as newer Service Mode entry code except you end it with #,#, "C" <--Hold down C for like 5 seconds, and when you release it, it will go to "screen Service mode".
Go down to "Screen Device settings" and then at the bottom of that page will be "Panel Self Check".....touch that and it will bring you to a screen to let you choose between calibration, LED test, etc..
One thing to try is a power cycle clear. It shouldn't hurt and it may help. Turn the main power OFF and unplug the power supply cord. Push the main power switch ON again to discharge the residual charge. Plug the power cord back in. If the Touch Panel Calibration is off because the memory used to store the setting has been corrupted by a power surge or a static discharge this might clear it.
The touch screen will away be available if not in parts manual check for lasted on my ricoh don't forget tdc2 only gets updated with new patch and the latest manual may not be on there
Regards Mark
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