Read Panasonic KX-TG5511CAB / KX-TG5511CAJ / KX-TGA550RUB / KX-TGA550RUJ / KX-TGA551RUB / KX-TGA551RUJ (serv.man2) Service Manual online
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KX-TG5511CA/KX-TGA550RU/KX-TGA551RU
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.51).
The connection of adjustment equipment is as shown in Adjustment Standard (Charger Unit) (P.51).
(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
2. Set line voltage to 48V and line current to 50mA.
3. Input -45dBm(600
Ω)/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
Ω Load).
5. Input -20dBm(600
Ω)/1kHz 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 -30.5dBm±2 dBm and that the distortion level is <5%
at Receiver (150
Ω 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 charge+ and charge-.
2. Measure and confirm voltage across the resistor is 3.3 V ± 0.3 V.
R55, R56, D22,
D23, D24, C623,
C624
(S)
2.4V Supply
Confirmation 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 charge+ 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
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