Panasonic KX-TCD410SLS Service Manual page 36

The base unit does not respond to a call from handset.
The base unit does not transmit or the transmit frequency is off.
The transmit frequency is off.
The transmit power output is low, and the operating distance between
base unit and handset is less than normal.
The reception sensitivity of base unit is low with noise.
The transmit level is high or low.
The reception level is high or low.
The unit does not link.
The unit cannot charge.
* : Refer to Adjustment
14.1. Adjustment
Please follow the items below when BBIC or EEPROM are replaced.
Items
(A) 2.65V Supply
Confirmation
Symptom
()
Adjustment
Point
1. Confirm that the voltage between TP187 and GND is 2.65V ± 0.2V.
-
Procedure*
36
Remedy
Make adjustments in item
(I)~(M)
Make adjustments in item
(H)~(J), (L)
Make confirmation in item
(H)~(J), (L)
Make confirmation in item
Make confirmation in item
Make adjustments in item
Make adjustments in item
Make confirmation in item
Make confirmation in item
Check
IC2,Q8,C23
C24,C25,C2
C27,C38,R3
R36,D5,C41
R41,R42,Q
C40,D4,X1
C32,C33,C3