Panasonic KX-TG8162ALB Service Manual page 45

Items
(N) Audio Check and
Confirmation
(O) SP phone Audio Check
and Confirmation
(P) Charge Pump 3.0 V
Supply Confirmation
(Q) Charge Pump CP_LED
4.0V Supply
Confirmation
(R) Charge Pump CP2.8V
Supply Confirmation
(S) Headset Audio Check
and Confirmation
Check
Point
- 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 Ω)/1 kHz to MIC of Handset. Measure the Level at Line I/F
and distortion level.
4. Confirm that the level is -3 dBm ± 5 dB and that the distortion level is < 5 % at
TEL Line (600 Ω Load).
5. Input -20 dBm (600 Ω)/1 kHz 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 -24 dBm ± 4 dB and that the distortion level is < 5 % at
Receiver (34 Ω Load).
- 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 -8 dBm ± 3 dB and that the distortion level is < 5 %.
(vol = Max at SP (8 Ω Load))
CP3V 1. Confirm that the voltage between testpoint CP3.0V and GND is 3.0 V ± 0.3 V. C30, C53, C54
CP_LED 1. Confirm that the voltage between testpoint CP_LED and GND is 4.0 V ± 0.3 V.
(Power is supplied when LED in on)
CP2.8V 1. Confirm that the voltage between testpoint CPV2.8V and GND is 2.8V ± 0.3 V.
- 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 Ω)/1 kHz to MIC of Headset. Measure the Level at Line I/F
and distortion level.
4. Confirm that level is -8 dBm ± 3 dB and that the distortion level is < 5 % at TEL
Line (600 Ω Load).
5. Input -20 dBm (600 Ω)/1 KHz to Line I/F. Measure the Level at Receiver of
Headset and distortion level (Receive volume set to second position form
minimum).
6. Confirm that the level is -21.5 dBm ± 3 dB and that the distortion level is < 5 %
at Headset Receiver (150 Ω Load).
Procedure
45
KX-TG8162ALB/KX-TG8163ALB/KX-TGA815AZB
Check or
Replace Parts
IC1, C12, C96,
C97, R5, R27,
RA4, C11,
C13, R28, MIC
IC1, C12, C73,
D13, D14,
MIC, C11,
C13, RA4,
R27, R28,
C96, C97, R5,
C72, C73
C52, C55
C30, C53,
C54, D3, C51
IC1, R29, C37,
C180, R22,
C14, R25,
C16, C83,
C32, R80, L7,
L9, C87, C84,
CN4