Panasonic KX-PRL260B Service Manual page 37

10.1.5.2. Handset
Does Handset link with Base Unit?
(Properly working unit)
NO
Is the voltage of TP VBAT about 2.2~2.8 V?
YES
Is the voltage of +1.8 V about 1.8 V?
YES
Does the RF clock (CLK) oscillate: 10.368 MHz
in Handset Test Mode?
YES
Check the RF part
Cross Reference:
Power Supply Circuit/Reset Circuit (P.22)
Check the RF part (P.38)
Note:
Refer to Things to Do after Replacing IC or X'tal (P.52)(P.61) for Handset.
*1 How to adjust the frequency of X1:
To see the frequency, execute the command "SFR", then check the TP_CKM (IC1-49pin).
To adjust frequency, send command "SFR
YES
Handset is OK. Check Base Unit.
NO
Check the batteries.
NO
Check around Power Supply Circuit/Reset Circuit.
NO Check around X1 and RF module and adjust
clock frequency.
"until the frequency counter becomes10.368 MHz±55 HZ.
37
KX-PRL260/KX-PRL262/KX-PRD260/KX-PRD262/KX-PRLA20
*1