How do I reset the microprocessor on the Pioneer DEH-S7200BHS?
Remove the front panel, then press the RESET button with a pointed instrument longer than 8 mm. The microprocessor should be reset before using the unit for the first time after installation, if the unit fails to operate properly, or when strange or incorrect messages appear on the display. (Page 5)
From the official Pioneer DEH-S7200BHS Car Receiver manual, page 5
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