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45
KX-PRW120W/KX-PRWA10W
(
O
)
SP phone Audio Check
and Confirmation
-
1. Link to Base which is connected to Line Simulator.
2. Set line voltage to 48 V and line current to 50 mA.
3. Set the handset off-hook using SP-Phone key.
4. Input -30 dBm (600
Ω
)/1 KHz to Line I/F and measure Receiving level at SP+
and SP-.
5. Confirm that the level is -7 dBm ± 3 dB and that the distortion level is < 5 %.
(vol = Max at SP (8
Ω
Load))
C1, C36, C37
(
P
)
DC/DC Converter 3.4V
Supply
+3.4V
1. Confirm that the voltage between tes3.4V and GND is 3.55V +/- 0.2V.
IC1, L3, Q8,
R20, C21,
R22, R21, C22
(
Q
)
Regulator 3.0 V Supply
Confirmation
CP3V
1. Confirm that the voltage between tes3.0V and GND is 3.0 V ± 0.2 V.
IC1, Q7, C42,
C43, R30,
R31, R32
(
R
) DC/DC Converter LED+
Supply Confirmation
LED+
1. Confirm that the voltage between testpoint LED+ and GND is 9.0V ± 0.5 V.
(Power is supplied when LED in on)
IC, L4, Q9,
C18, C24,
C25, R23, R24
Items
Check
Point
Procedure
Check or
Replace Parts
Содержание KX-PRW120W
Страница 70: ...70 KX PRW120W KX PRWA10W Memo ...
Страница 76: ...76 KX PRW120W KX PRWA10W Memo ...