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KX-TG6811CAB/KX-TG6811CAM/KX-TG6812CAB/KX-TG6821CAB/KX-TG6821CAM/KX-TG6822CAB/KX-TGA681RUB/KX-TGA681RUM
(N)
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. Input -45 dBm (600
2. Set line voltage to 48 V and line current to 50 mA.
3. Input -45 dBm (600
)/1 kHz to MIC of Handset. Measure the Level at Line I/F
and distortion level.
4. Confirm that the level is -4.5 dBm ± 5 dB and that the distortion level is < 5 %
at TEL Line (600
Load).
5. Input -20 dBm (600
)/1 kHz to Line I/F. Measure the Level at Receiver of
Handset and distortion level (Receive volume set to second position from
minimum).
minimum).
6. Confirm that the level is -23.5 dBm ± 4 dB and that the distortion level is < 5 %
at Receiver (34
Load).
IC1, C12, RA7,
C11, C13,
MIC, R23,
C42, C70, C71
(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
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 -10.5 dBm ± 3 dB and that the distortion level is < 5 %.
(vol = Max at SP (8
Load))
IC1, C72, C73,
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 CP 4.0V
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
(R)
Charge Pump CP2.8V
Supply Confirmation
CP2.8V
1. Confirm that the voltage between testpoint CPV2.8V and GND is 2.8V ± 0.3 V.
C30, C53,
C29, D3, C51
Items
Check
Point
Procedure
Check or
Replace Parts
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