Read Panasonic KX-TG6811UAB / KX-TG6811UAM / KX-TG6812UAB / KX-TG6821UAB / KX-TGA681RUB / KX-TGA681RUM Service Manual online
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KX-TG6811UAB/KX-TG6811UAM/KX-TG6812UAB/KX-TG6821UAB/KX-TGA681RUB/KX-TGA681RUM
9.1.3.
Check Link
9.1.3.1.
Base Unit
Note:
(*1) Refer to Troubleshooting by Symptom (Base Unit) (P.39)
Cross Reference:
Check Point (Base Unit) (P.39)
Power Supply Circuit (P.13)
Check around Power Supply Circuit.
Adjust +3.0V voltage to 3.0 V.
Refer to Check Point...(B).
Refer to Check Point...(B).
Does Base Unit make link with normal working
Handset?
Handset?
Check around X501 and adjust clock frequency.
Refer to Check Point...(E) .
Refer to Check Point...(E) .
NO
NO
NO (*1)
NO
YES
YES
YES
YES
YES
NO
NO
NO
Replace with a new Circuit Board.
Is the modulation OK?
Refer to Check Point...(I) .
Refer to Check Point...(I) .
Is the voltage of VBAT about 3.0 V?
Refer to Check Point...(A).
Refer to Check Point...(A).
Is there CMD60 (: DECT Tester)?
Does the RF clock (CLK) oscillate at 13.824 MHz in
Base Unit Test Mode?
Refer to Check Point...(E) .
Base Unit Test Mode?
Refer to Check Point...(E) .
Is the voltage of +3.0V about 3.0 V?
YES
Is the NTP value OK?
Refer to Check Point...(H).
Refer to Check Point...(H).
Does Base Unit make link with CMD60 in Base Unit
Test Mode?
Refer to Check Point...(H).
Test Mode?
Refer to Check Point...(H).
NO
YES
Base Unit is OK. Check Handset.
YES
YES
Is the Frequency Offset OK?
Refer to Check Point...(J) .
Refer to Check Point...(J) .
NO
OK
NO
NO
Is the Sensitivity Receiver OK?
Refer to Check Point...(K).
Refer to Check Point...(K).
YES
Is the Power RAMP OK?
Refer to Check Point...(L) .
Refer to Check Point...(L) .
Replace with a new Circuit Board.
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