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KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM
9.1.3.
Check Link
9.1.3.1.
Base Unit
Cross Reference:
Power Supply Circuit/Reset Circuit
(P.10)
Check the RF part
(P.35)
Note:
*1 How to 3.0V:
Execute the command "VDA"
Refer to Things to Do after Replacing IC or X'tal (P.xx) for Base Unit.
Check around
Power Supply Circuit
.
3.0V voltage to 3.0 V.
Does Base Unit make link with normal working
Handset?
Check around X501 and RF module and adjust
clock frequency.
NO
NO
NO
NO
YES
YES
Is the voltage of VBAT about 3.0 V?
Refer to
Check Point...(A)
Refer to
Check Point...(B)
Refer to
Check Point...(D)
Check the RF part
Does the RF clock (CLK) oscillate at 13.824 MHz in
Base Unit Test Mode?
YES
Is the voltage of VDDC about 1.2 V?
Is the voltage of +3.0V about 3.0 V?
Refer to
Check Point...(G)
YES
YES
Base Unit is OK. Check Handset.
NO
OK
*1
*2
NO
YES
YES
YES
YES
NO
NO
NO
Replace with a new Circuit Board.
Is the modulation OK?
Refer to
Check Point...(K)
.
Is there CMD60 (: DECT Tester)?
Is the NTP value OK?
Refer to
Check Point...(J)
.
Does Base Unit make link with CMD60 in Base Unit
Test Mode?
Refer to
Check Point...(J)
.
NO
YES
YES
Is the Frequency Offset OK?
Refer to
Check Point...(L)
.