Panasonic KX-TG6611CXB Service Manual page 27

YES
Is the Frequency Drift OK?
Refer to Check Point...(L).
YES
Is the Sensitivity Receiver OK?
Refer to Check Point...(M).
YES
Is the Timing OK?
Refer to Check Point...(N).
YES
Is the Power RAMP OK?
Refer to Check Point...(O).
Cross Reference:
Check Point (Base Unit) (P.35)
KX-TG6611CXB/KX-TG6611CXS/KX-TG6612CXB/KX-TG6612CXS/KX-TGA661CXB/KX-TGA661CXS
NO
NO
NO
Replace with a new Circuit Board.
NO
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