Panasonic KX-TG2511CAM, Service Manual

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KX-TG2511CA/KX-TG2512CA/KX-TGA250RU
9.2.2. Check Point (Charger Unit)
Note:
After the measuring, suck up the solder of TP.
The connection of adjustment equipment is as shown in
Adjustment Standard (Charger Unit) (P.50).
( Q ) Audio Check - 1. Link with Handset which is connected to Line Simulator.
2. Set line voltage to 48V and line current to 50mA.
3. Input -45dBm(600.)/1kHz to MIC of Handset. Measure the Level at Line I/F
and distortion level.
4. Confirm that the level is -2.5dBm ± 2 dBm and that the distortion level is <5%
at TEL Line (600. Load).
5. Input -23dBm(600.)/1kHz to Line I/F. Measure the Level at Receiver of Hand-
set and distortion level (Receive volume set to second position from mini-
mum).
6. Confirm that the level is -22 dBm ± 2 dBm and that the distortion level is < 5%
at Receiver (150. Load).
IC7, SA1, L1,
L2, D3, Q3, Q4,
R14, R15, R16,
R17, D21, Q5,
R19, R20, C14,
C56, R117,
R116, C141, R9,
C22, C23
( R ) Charging Check - 1. Connect Charge Contact 12
Ω
/2 W resistor between and charge-.
2. Measure and confirm voltage across the resistor is 3.3V ± 0.3V.
R55, R56, D22,
D23, D24, C623,
C624
( S ) 2.4V Supply Confirma-
tion VDD2
VDD2 1. Confirm that the voltage between test point VDD2 and GND is 2.5V ± 0.2V. IC7, Q9, C617
Items Check
Point
Procedure Check or
Replace Parts
( A ) Charging Check - 1. Connect Charge Contact 12
Ω
/2 W resistor between and charge-.
2. Measure and confirm voltage across the resistor is 3.1 V ± 0.3 V.
R1, F1
Items Check
Point
Procedure Check or
Replace Parts