Pioneer AVIC-Z2/XU/UC Service Manual page 230

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• Select "7. NATURAL PICTURE", the image above will be displayed.
4-22. Initialization of backup variables
• Initialize backup variables for system reset.
• After displaying the testing screen, use [MAP] key to execute the test.
• After initialization, restart the system.
• Use [AV] key to return to the menu screen.
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