Panasonic KX-TCD220SLT Service Manual page 63

Items
(T) SP phone Audio Check
and Confirmation
Check
Point
- 1. Link to Base which is connected to Line Simulator.
2. Set line voltage to 48V and line current to 40mA.
3. Set the handset off-hook using SP-Phone key.
4. Input -25dBm/1KHz to Line I/F and measure Receiving level at SP1 and SP2.
5. Confirm that the level is -15.5dBm ± 2dBm and that the distortion level is < 5%.
(vol = 3)
Procedure
63
KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT
Check or
Replace Parts
IC1, C37, C68,
C91, R25,
R26, C20,
C12, C87,
C109, R85,
C103, C10,
C17, R86,
R29, R37,
R38, L6, L7,
C79, C78