Check Point (Charger Unit) - Panasonic KX-PRX120W Service Manual

KX-PRX120W/KX-PRXA10W
Items
(N)* Sensitivity Receiver
Confirmation
(O)* Timing Confirmation
(P)* Power RAMP
Confirmation
(Q) Audio Check
(S) 2.4V Supply
Confirmation VDD2
9.2.2.

Check Point (Charger Unit)

Items
(T) Charging Check
Note:
After the measuring, suck up the solder of TP.
The connection of adjustment equipment is as shown in Adjustment Standard (Charger Unit) (P.49).
Check
Point
- Follow steps 1 to 6 of (J).
ANTI_TP 7.Set DECT tester power to -88 dBm.
8.Confirm that the BER is < 1000 ppm.
- Follow steps 1 to 6 of (J).
ANTI_TP 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±5 dB 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 -30.0dBm± 4 dB and that the distortion level is <5%
at Receiver (Receiver Load).
VDD2 1. Confirm that the voltage between test point VDD2 and GND is 2.5V ± 0.2V.
Check
Point
- 1. Connect Charge Contact 10Ω/5W resistor between charge+ and charge-.
2. Measure and confirm voltage across the resistor is 5.0 V ± 0.3 V.
Procedure
Procedure
38
Check or
Replace Parts
IC7,
C802~C806,
C809~C813,
C820, C837,
C822, C823,
C825, C863,
C826, C864,
C851, C853,
DA801, DA802,
L802, L803,
C855~C858,
R806, R807,
R106, R109,
Q9, C617,R71
IC7,
C802~C806,
C809~C813,
C820, C837,
C822, C823,
C825, C863,
C826, C864,
C851, C853,
DA801, DA802,
L802, L803,
C855~C858,
R806, R807,
R106, R109,
Q9, C617,R71
IC7,
C802~C806,
C809~C813,
C820, C837,
C822, C823,
C825, C863,
C826, C864,
C851, C853,
DA801, DA802,
L802, L803,
C855~C858,
R806, R807,
R106, R109,
Q9, C617,R71
IC7, SA1, P1,
D3, Q3, Q4,
R14, R15, R16,
R17, D21, Q5,
R19, R20, C14,
C56, R117,
R116, R29,
C22
IC7, Q9, C617,
R71
Check or
Replace Parts
R1, F1