Panasonic KX-FP70CX Service Manual page 67

11.1.4. Memory Clear Specification
1
* Execute Service Mode #550 when you want to reset the all setting data keeping the user information.
2
* Execute Service Mode #710 to clear the user information in case that Main Unit is recycled.
Note:
• Please restart a power supply after clearing a memory.
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KX-FP701CX/KX-FP702CX