Panasonic KX-TG2511CAM Service Manual page 41

Items
(K)* Frequency Offset Confir-
mation
(L)* Frequency Drift Confir-
mation
(M)* Sensitivity Receiver
Confirmation
(N)* Power RAMP Confirma-
tion
(O) Audio Check and Confir-
mation
(P) SP phone Audio Check
and Confirmation
(Q) Charge Pump 3.0V
Supply Confirmation
(R) Charge Pump 4.0V
Supply Confirmation
Check
Point
- Follow steps 1 to 3 of (I).
4.Confirm that the frequency Offset is < ± 50 kHz.
- Follow steps 1 to 3 of (I).
4.Confirm that the frequency Drift is < ± 35 kHz/ms.
- Follow steps 1 to 3 of (I).
4.Set DECT tester power to -88 dBm.
5.Confirm that the BER is < 1000 ppm.
- Follow steps 1 to 3 of (I).
4.Confirm that Power RAMP is matching.
- 1. Link to BASE which is connected to Line Simulator.
2. Set line voltage to 48V and line current to 50mA.
3. Input -45dBm(600.)/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 (600. Load).
5. Input -23dBm(600.)/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 -22dBm ± 2 dBm and that the distortion level is <5% at
Receiver (150. Load).
- 1. Link to Base which is connected to Line Simulator.
2. Set line voltage to 48V and line current to 50mA.
3. Set the handset off-hook using SP-Phone key.
4. Input -23 dBm(600.)/1KHz to Line I/F and measure Receiving level at SP+ and
SP-.
5. Confirm that the level is -11.0 dBm ± 2 dBm and that the distortion level is <
5%. (vol = 3)
CP3.0V 1. Confirm that the voltage between testpoint CP3.0V and GND is 3.0 ± 0.3.
CP4.0V 1. Confirm that the voltage between testpoint CP4.0V and GND is 4.0V ± 0.3V.
Procedure
41
KX-TG2511CA/KX-TG2512CA/KX-TGA250RU
Check or
Replace Parts
IC1,
C802~C806,
C808~C814,
C819~C820,
C822,
C825~C827,
C834,
C860~C864,
L801~L804,
DA801,
R801~R808
IC1,
C802~C806,
C808~C814,
C819~C820,
C822,
C825~C827,
C834,
C860~C864,
L801~L804,
DA801,
R801~R808
IC1,
C802~C806,
C808~C814,
C819~C820,
C822,
C825~C827,
C834,
C860~C864,
L801~L804,
DA801,
R801~R808
IC1,
C802~C806,
C808~C814,
C819~C820,
C822,
C825~C827,
C834,
C860~C864,
L801~L804,
DA801,
R801~R808
IC1, C12, C96,
C97, R215,
R27, RA4,
C11, C13,
R28, D3, D4,
MIC, R73, R74
IC1, C12, C73,
D13, D14,
R73, R74,
MIC, C11,
C13, RA4,
R27, R28,
C96, C97,
R215, C72
C49, C52~C54
C50, C51, C55