Panasonic KX-TG6561BXT Service Manual page 43

Items
(O)* Timing Confirmation
(P)* Power RAMP
Confirmation
(Q) Audio Check
(R) Charging Check
(S) 2.4V Supply Confirma-
tion VDD2
(T) TAM Operation
Confirmation
Check
Point
- Follow steps 1 to 6 of (J).
ANT 1 7.Confirm that the Timing accuracy is
• ± 5.0 ppm (When adjust the frequency of CLK in item (G)).
• ± 15 ppm (When do not adjust the frequency of CLK in item (G)).
- Follow steps 1 to 6 of (J).
7.Confirm that Power RAMP is matching.
- 1. Link with Handset which is connected to Line Simulator.
2. Set line voltage to 48V and line current to 50mA.
3. Input -45dBm(600Ω)/1kHz to MIC of Handset. Measure the Level at Line I/F
and distortion level.
4. Confirm that the level is -2.5dBm±2 dBm and that the distortion level is <5% at
TEL Line (600Ω Load).
5. Input -20dBm(600Ω)/1kHz to Line I/F. Measure the Level at Receiver of
Handset and distortion level (Receive volume set to second position from
minimum).
6. Confirm that the level is -24.0dBm±2 dBm and that the distortion level is <5%
at Receiver (34Ω Load).
1. Connect Charge Contact 12 Ω/2 W resistor between charge+ and charge-.
-
2. Measure and confirm voltage across the resistor is 3.3 V ± 0.3 V.
VDD2 1. Confirm that the voltage between test point VDD2 and GND is 2.5V ± 0.2V.
- 1. TAM Confirmation (Execute the command "sendchar VPI").
2. Confirm the returned Value (Value is "DC17EA 01").
Procedure
43
KX-TG6561BXT/KX-TGA651BXT
Check or
Replace Parts
IC501, C805,
C806, C810,
C814, C811,
C813, C812,
L809, C825,
C895, L897,
C894, R806,
C859, C896,
DA801, DA802,
C891, R891,
X501
IC501, C805,
C806, C810,
C814, C811,
C813, C812,
L809, C825,
C895, L897,
C894, R806,
C859, C896,
DA801, DA802,
C891, R891
P101, D101,
R141, R142,
Q142, R144,
R145, D141,
R162, R165,
Q161, R161,
R164, R163,
R167, R651,
R152, IC501,
C805, C806,
C810, C814,
C811, C813,
C812, L809,
C825, C895,
L897, C894,
R806, C859,
C896, DA801,
DA802, C891,
R891, C173,
Q171, C178,
R178, IC501
R55, R56, D22,
D23, D24, C623,
C624
IC7, Q9, C617
IC601, R601,
R602, R604,
R603, C601