Panasonic KX-TCA275RU Service Manual ▷ View online
57
KX-TCA275RU
KX-TCA275
RU HANDSET SCHEMATIC DIAGRAM (2/2)
(2)
(3)
(4)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(19)
(20)
(21)
(21)
(22)
(23)(24)
(25)
(26)
(26)
(27)
(28)
(29)
(30)
(1)
7
8
11
10
9
LDO1_CTRL
LDO1_SNS
MIC_BIAS
RXDA
SYEN
SYDA
SYDA
SYCL
RXDSG
RSSI
PSEL
PAON
TXDA
RFCONT
SYRI
C34
6.3V KB 22u
C33
6.3V KB 22u
IC5
1
SUSPEND
2
BIAS-IN
3
BIAS-OUT
4
IN
5
OUT1
6
VCC
7
GND
8
OUT2
R32
F43k
F43k
R33
F18k
Q10
CN10
1
2
2
4
3
5
Q17
1
6
2
Q14
Q11
1
2
2
5
6
Q13
D3.0V
5.0V
C28
10V 1u
10V 1u
BATT
C22
Z0.1
C26
1000p
L4
C29
Z1u
C27
10V 1u
D1.8V
C24 0.068u
AG
C21
0.068u
C23
10p
C30
NC
D15
C25
6.3V KB 22u
R38
470k
R35
270k
BATT
D16
R30
68k
R31
68k
R37
10k
10k
D3.0V
R36
100k
R39
100k
R34
1M
R41
27k
C31
NC
NC
AG
R52
2.2K
2.2K
AG
R40
330
C36
10p
10p
C37
6.3V KB 22u
6.3V KB 22u
R43
100
C38
K0.1u
R53
10k
10k
C44
J47p
C49 10p
C40
Z0.1
R58
68k
C48 K470p
C46
10p
C41
Z 2.2u
C42
10p
R56
120
C53
10p
C67
10p
BATT
C60
10p
10p
C56
10p
C62
NC
NC
R67
0
C54
Z0.1
C65
10p
10p
CN1
HEADSET_JACK
1
2
3
4
5
RF_GND
R66
NC
AG
R59
47k
R64
47k
R65
82k
R60
56k
56k
D3.0V
R57
100k
C69
10p
AG
CN9
1
2
2
R70
33
R69
33
C58
10p
C57
10p
AG
AG
AG
C39
10p
AG
R72
0
0
C68
10p
R61
NC
BATT
C66
NC
C51
NC
C63
NC
C50
NC
IC6
NC
1
SUSPEND
2
BIAS-IN
3
BIAS-OUT
4
IN
5
OUT1
6
VCC
7
GND
8
OUT2
C45
NC
NC
R55
10k
C47
NC
C52
NC
R68
NC
C55
NC
C59
NC
C43
NC
R54
NC
R42
0
R71
NC
R62
1
R63
1
C64
10p
D7
D5
D10
D6
D3
D8
D4
D9
D3.0V
R45
120
R44
120
R46
120
R47
120
R48
120
R49
120
R50
120
R51
120
Q12
E
C
B
PSEL
SYDA
RXDA
RXDSG
TXDA
SYEN
PAON
SYRI
RSSI
SYCL
BATT
BATT
RFCONT
C110
6.3V/100
C61
ESD
R74
10k
C122
10p
CN8
1
2
2
D17
D18
D19
D20
D21
D22
D23
D24
D25
D26
D3.0V
R76
120
R77
120
R78
120
R79
120
R80
120
R81
120
R82
120
R83
120
R84
120
R85
120
D3.0V
CK18
SYRI
CK11
CK12
CK14
CK13
CK15
CK16
CK10
IC4
1
D1
2
D2
3
G
4
S
5
D3
6
D4
C72
Z0.1
C70
2200p
C35
0.1u
0.1u
R29
R75
10k
POS1
+
-
EN:Low Output OFF
High Output ON
+
MIC (1JM)
-
Rear Speaker
Receiver
To RF BLOCK
Sub-PCB
D
F
E
C
B
A
H
G
3
4
C
E
B
10:D
10:E
7:B
58
KX-TCA275RU
13.2. Handset (RF Unit)
KX-TCA275
RU
RF UNIT SCHEMATIC DIAGRAM
D
F
E
C
B
A
4
7
6
2
81
0
9
C630
8p
R626
220
C622 12p
R605
1k
R615 2.7k
R606
1k
C646 0.1
C605 10p
TXDA
R611
3.9k
SYEN
C620 12p
L608
2.7nH
IC602
1
PO
2
PSEL
3
PAON
4
VCC
5
PI
6
PIX
7
PSET
8
VCCS
9
PRAMP
10
POX
C665
8p
PAON
L620
10nH
C671
10p
FIL601
1
2
3
4
C647
10p
C610
12p
L602 4.7nH
C621 12p
R607
1k
RXDA
L617
8.2nH
C682 0.01
L614
5.6nH
L621
10nH
C651
68p
C625 47p
R610 10k
C632 3p
R604 8.2k
JP601
C652
2p
C604 0.01
C657 8p
C674
NC
C681
0.01
R645
330
R632
F.B
L601
4.7nH
SYRI
FB603
F.B
C601 2200p
R633
10
C608 1000p
C677 1.0u
IC603
1
EN2
2
VIN
3
EN1
4
VSS
5
VOUT1
6
VOUT2
C666
0
R634
10
TP601
C654
10p
C633
3p
C648
10p
R603
2.7k
FB606
F.B
C603
10p
C656 1.5p
RSSI
C653
2p
C683
10p
R614
22k
PSEL
C607 0.01
C634
3p
C609 0.01
C673
0
BATT
C606 8p
C642
10p
BATT
C650
8p
R623
560
L610
3.3nH
C649
10p
C670 5.6nH
C643
10p
R612 1.2k
C660
10p
C645
1p
IC601
1
NC1
2
DR
3
DRX
4
NC4
5
NC5
6
DIREF
7
VCCRXRF
8
GNDRXRF
9
RF
10
RFX
11
RXON
12
VCC1
13
BPNP
14
VCCPLL
15
VCCBG1
16
GNDREG1
17
TXDA
18
GNDPLL
19
RSSI
20
RXDSG
21
SYRI
22
SYCL
23
SYDA
24
SYEN
25
ICHP
26
PD
27
GNDTX
28
VCOK2
29
VCOK1
30
GNDREG2
31
VCC2
32
GNDRXIF
33
GNDC
34
RXDA
35
VCCRXIF
36
PF
37
SHR
38
SHC
C624 1000p
L611
3.3nH
RFCONT
L605
27nH
L616
27nH
BATT
SYDA
C684
10p
C626 0.01
L603
27nH
C627 10p
C680 NC
SYCL
C623
12p
R613 27nH
L615
5.6nH
R625
270
C672
10p
R608
1k
C631
8p
RXDSG
L606
2.7nH
C676
1.0u
L631
27nH
C675 1.0u
CK601
CK602
C690
8p
D601
D602
L630
47nH
L632
0
C691
1p
C678
10p
1
2
8:A
8:B
5
3
8:B
1
Refer to
the jumper-land nearby the TP601 (RF test point)
59
KX-TCA275RU
13.3. Charger Unit
CN1
1
2
C K 1
C K 3
C K 2
C K 6
C K 7
IP1
D1
CHRG+
CHRG-
Q2
NC
NC
S
D
G
C6
1500p
Q1
NC
C5
NC
C4
NC
R3
22
R4
22
R5
22
R2
22
C K 5
C K 4
C3
NC
C2
NC
C1
NC
R8
0
R7
NC
R6
NC
R1
NC
KX-TCA275
RU CHARGER UNIT SCHEMATIC DIAGRAM
60
KX-TCA275RU
Memo
Click on the first or last page to see other KX-TCA275RU service manuals if exist.