46
KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM
(
K
)*
Frequency Offset
Confirmation
-
Follow steps 1 to 3 of
(I)
.
4.Confirm that the frequency Offset is < ± 50 kHz.
IC1,
C802~C806,
C808~C814,
C819~C820,
C822,
C825~C827,
C834,
C860~C864,
L801~L804,
DA801,
R801~R808
(
L
)*
Frequency Drift
Confirmation
-
Follow steps 1 to 3 of
(I)
.
4.Confirm that the frequency Drift is < ± 35 kHz/ms.
IC1,
C802~C806,
C808~C814,
C819~C820,
C822,
C825~C827,
C834,
C860~C864,
L801~L804,
DA801,
R801~R808
(
M
)*
Sensitivity Receiver
Confirmation
-
Follow steps 1 to 3 of
(I)
.
4.Set DECT tester power to -88 dBm.
5.Confirm that the BER is < 1000 ppm.
IC1,
C802~C806,
C808~C814,
C819~C820,
C822,
C825~C827,
C834,
C860~C864,
L801~L804,
DA801,
R801~R808
(
N
)*
Power RAMP
Confirmation
-
Follow steps 1 to 3 of
(I)
.
4.Confirm that Power RAMP is matching.
IC1,
C802~C806,
C808~C814,
C819~C820,
C822,
C825~C827,
C834,
C860~C864,
L801~L804,
DA801,
R801~R808
(
O
)
Audio Check and
Confirmation
-
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
Ω
)/1kHz to MIC of Handset. Measure the Level at Line I/F
and distortion level.
4. Confirm that the level is -1.0dBm±2 dBm and that the distortion level is<5% at
TEL Line (600
Ω
Load).
5. Input -20dBm(600
Ω
)/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 -25dBm±2 dBm and that the distortion level is <5% at
Receiver (110
Ω
Load).
IC1, C12, C96,
C97, R215,
R27, RA4,
C11, C13,
R28, D3, D4,
MIC, R73, R74
(
P
) SP phone Audio Check
and Confirmation
-
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 -25 dBm(600
Ω
)/1KHz to Line I/F and measure Receiving level at SP+
and SP-.
5. Confirm that the level is -9.5 dBm ± 2 dBm and that the distortion level is < 5%.
(vol = 3)
IC1, C12, C73,
D13, D14,
R73, R74,
MIC, C11,
C13, RA4,
R27, R28,
C96, C97,
R215, C72
(
Q
)
Charge Pump 3.0V
Supply Confirmation
CP3.0V
1. Confirm that the voltage between testpoint CP3.0V and GND is 3.0±0.3V.
C49, C52~C54
(
R
)
Charge Pump 4.0V
Supply Confirmation
CP4.0V
1. Confirm that the voltage between testpoint CP4.0V and GND is 4.0V±0.3V.
C50, C51,
C55
Items
Check
Point
Procedure
Check or
Replace Parts