43
KX-TGC220/KX-TGC222/KX-TGC223/KX-TGCA20
(
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
)/1 KHz to Line I/F and measure Receiving level at SP+
and SP-.
5. Confirm that the level is -10.0 dBm ± 3 dB (for NZ) or -9.0±3 dBm (for AL) and
that the distortion level is < 5 %.
(vol = Max at SP (8
Load))
IC1, C78, C79,
R76, R77
(
P
)
Charge Pump 3.0 V
Supply Confirmation
CP3V
1. Confirm that the voltage between testpoint CP3.0V and GND is 3.0 V ± 0.3 V. C30, C53, C29
(
Q
)
Charge Pump CP4V
Supply Confirmation
CP4V
1. Confirm that the voltage between testpoint CP4V and GND is 4.0 V ± 0.3 V.
(Power is supplied when LED in on)
C52, C55,
C30, C29
Items
Check
Point
Procedure
Check or
Replace Parts
Содержание KX-TGC220AL
Страница 10: ...10 KX TGC220 KX TGC222 KX TGC223 KX TGCA20 4 3 Block Diagram Base Unit_RF Part RXp RXn ANT1 TXp TXn ...
Страница 64: ...64 KX TGC220 KX TGC222 KX TGC223 KX TGCA20 Memo ...
Страница 69: ...69 KX TGC220 KX TGC222 KX TGC223 KX TGCA20 Memo ...
Страница 72: ...72 KX TGC220 KX TGC222 KX TGC223 KX TGCA20 Memo ...
Страница 76: ...76 KX TGC220 KX TGC222 KX TGC223 KX TGCA20 Memo ...