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KX-TG7731S/KX-TG7732S/KX-TG7733S/KX-TGA470S
10.1.5. Check Link
10.1.5.1. Base Unit
Cross Reference:
Power Supply Circuit/Reset Circuit
(P.14)
Check the RF part
(P.41)
Note:
*1 How to 3.0V:
Execute the command "VDA"
Refer to
Things to Do after Replacing IC or X'tal
(P.63) for Base Unit.
*2 How to adjust the frequency of X501:
To see the frequency, execute the command “SFR“, then check the TP_CKM (IC501-57pin).
To adjust frequency, send command “SFR
“until the frequency counter becomes13.824 MHZ±55HZ.
Check around
Power Supply Circuit
.
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 VDD3 about 3.0V?
Check the RF part
Does the RF clock (CLK) oscillate at 10.368 MHz in
Base Unit Test Mode?
YES
Is the voltage of VDD1 about 1.8V?
YES
Base Unit is OK. Check Handset.
*2