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KX-TGC210LAB/KX-TGC212LAB/KX-TGC213LAB/KX-TGC220LAB/KX-TGC222LAB/KX-TGC223LAB/KX-TGCA20LAB
10.1.5.2. Handset
Cross Reference:
Power Supply Circuit/Reset Circuit
Note:
(*1) Refer to
Troubleshooting by Handset
To see the frequency, execute the command “SFR“, then check the TP_CKM (IC1-55pin).
To adjust frequency, send command “SFR
“ until the frequency counter becomes10.368 MHz±55HZ.
Things to Do after Replacing IC or X'tal
(P.53) for Handset.
Check around
Power Supply Circuit/Reset Circuit
.
Check BBIC (IC1)
Does Handset make link with Base Unit?
(Correct working unit)
Check around X1 and adjust clock frequency.
NO
NO
NO
NO
Is the voltage of "1.8V" about 1.8 V?
YES
YES
YES
YES
Is the voltage of CP3V about 3.0 V?
Does the RF clock (CLK) oscillate: 10.368 MHz
in Handset Test Mode?
YES
Is the voltage of CP2.8V about 2.8 V?
Handset is OK. Check Base Unit.
YES
OK
Check the RF part.
NO
NO
NO
Adjust 1.8V voltage to 1.8 V.
Is the voltage of CP4V about 4.0V?
(When LED is ON)
Check D3