36
KX-TG4221N/KX-TG4222N/KX-TG4223N/KX-TG313SK/KX-TG4224N/KX-TG4225N/KX-TGA421N
10.1.5.2. Handset
Cross Reference:
Power Supply Circuit/Reset Circuit
Note:
*1 How to adjust the frequency of X1:
To see the frequency, execute the command “SFR“, then check the TP_CKM (IC5-52pin).
To adjust frequency, send command “SFR
“ until the frequency counter becomes10.368 MHz±55HZ.
Refer to
Things to Do after Replacing IC or X'tal
Check around
Power Supply Circuit/Reset Circuit
.
Does Handset make link with Base Unit?
(Correct working unit)
Check around X1 and RF module and adjust
clock frequency.
NO
NO
NO
NO
Is the voltage of TP VBAT about 2.2~2.8 V?
Is the voltage of TP 1.8V about 1.8 V?
YES
YES
YES
YES
Is the voltage of 36 Pin (IC5) about 2.2~2.8 V?
Does the RF clock (CLK) oscillate: 10.368 MHz
in Handset Test Mode?
Handset is OK. Check Base Unit.
YES
NO
Check the RF part
Check the batteries.
*1
Содержание KX-TG4221N
Страница 65: ...65 KX TG4221N KX TG4222N KX TG4223N KX TG313SK KX TG4224N KX TG4225N KX TGA421N Memo ...
Страница 68: ...68 KX TG4221N KX TG4222N KX TG4223N KX TG313SK KX TG4224N KX TG4225N KX TGA421N Memo ...
Страница 72: ...72 KX TG4221N KX TG4222N KX TG4223N KX TG313SK KX TG4224N KX TG4225N KX TGA421N Memo ...