Panasonic KX-TCA275RU Service Manual ▷ View online
49
KX-TCA275RU
D1
RA5
1
CN2
SW11
R2 C3
RA4
RA3 RA2
RA1
SW10
SW40
SW1
SW00
SW30
SW20
SW01
SW31
SW50
SW41
SW42
SW32
SW52
SW02
SW21
SW51
SW22
SW12
SW53
SW23
SW43
SW13
CN9
SW03
SW33
D23
R82
D24
D25
R83
R84
R85
D26
R81
D22
R80
D21
D20
R79
D19
R78
R77
D18
R76
D17
D10
R51
D9
R50
R49
D8
R48
D7
R45
D4
D6
R47
D3
R44
D5
R46
KX-TCA275RU CIRCUIT BOARD (HANDSET) Bottom View
AF VOLT
METER
METER
OSCILLO
SCOPE
SCOPE
32
Ω
50
KX-TCA275RU
11.2.3. Adjustment (Charger Unit)
Note:
After the measuring, sock up the solder of TP.
11.2.4. Adjustment Standard (Charger Unit)
When connecting the Simulator Equipments for checking, please refer to below.
11.2.4.1. Flow Solder Side View
11.3. RF Specification (Handset)
**: Refer to Adjustment (Handset) (P.46)
Items
Adjustment
Point
Procedure
Check or
Replace Parts
(A) Charging Check
-
1. Connect Charge Contact 30
Ω/2W register between charge+ and charge-.
2. Measure and confirm voltage across the register is 5.1V±0.2V.
CN1
CK1
CK3
IP1
C1
R1
C2
C6
R8
C4
C5
C3
D1
R6
CK2
CK7
CK6
CK5
CK4
R7
R5
R4
R3
R2
Q1
Q2
PbF
PSUP1712Z
A
KX-TCA275RU CIRCUIT BOARD
(CHARGER UNIT) Component View
Digital Volt Meter
30
Ω
DC POWER
6.5V
GND
GND
2 Watts
Item
Value
Refer to -. **
Remarks
Modulation
360 kHz/div~380 kHz/div
Adjustment (Handset) (I)
Data type: Fig31
RSSI Level
0x08 hex±8 hex (at -93dBm)
0x1D hex±8 hex (at -63dBm)
0x1D hex±8 hex (at -63dBm)
Adjustment (Handset) (J)
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KX-TCA275RU
11.4. How to Check the Handset Speaker
1. Prepare the digital voltmeter, and set the selector knob to ohm meter.
2. Put the probes at the speaker terminals as shown below.
2. Put the probes at the speaker terminals as shown below.
11.5. How to Check the Handset Receiver
1. Prepare the digital voltmeter, and set the selector knob to ohm meter.
1. Put the probes at the receiver terminals as shown below.
1. Put the probes at the receiver terminals as shown below.
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KX-TCA275RU
11.6. Frequency Table (MHz)
Channel No
Transmit / Receive Frequency
0
1897.344
1
1895.616
2
1893.888
3
1892.160
4
1890.432
5
1888.704
6
1886.976
7
1885.248
8
1883.520
9
1881.792
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