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Model
KX-TC1205RUB KX-TC1205RUW KX-TC1205RUS KX-TC1205RUF
Pages
69
Size
1.76 MB
Type
PDF
Document
Service Manual
Brand
Device
Telephone / TELEPHONE EQUIPMENT
File
kx-tc1205rub-kx-tc1205ruw-kx-tc1205rus-kx-tc1205ru.pdf
Date
PREV: Panasonic KX-TC1200RMB Service Manual

Panasonic KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF Service Manual ▷ View online

26.2. RF Unit (Base Unit)
RX
TX
4.4V
450kHz
10.7MHz
2.1V
4.8V
0V
0V
KX-TC1205RUB/W/S/F  SCHEMATIC DIAGRAM (RF Unit (Base Unit))
VREF
IST Mix IN
VCC2
VCO CONT
VCO1
VCO2
C-RECT
RX CP
TX CP
PLL GND
TX IN
VCC3 LO1
LO2
S-OUT CLK
DATA STB
FL-OUT
FL-IN
COMP
OUT
C-NF
AF
OUT
REF
IN
AF-IN
REF
OUT
EXP OUT
REC IN
RO1
RO2
BAT. ALM
RSSI
DATA O/P
DATA I/P
FIL-IN
F OUT
DET.
OUT
QUAD
IF
OUT
GND2
DEC
IF
IN
VCC1
2ND
MIX
OUT
N-REC
2ND
MIX
IN
E-REC
IST
MIX
OUT
IFT\7
RX DATA
GND
CR-DET
RF-DATA
VTX
TX DATA
RF-STB
COMP
EXPO
VERG
RF-CLK
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
C104
39P
C0603
R28
NA
R0603
R29
0
R0603
R27
56
R0603
R19
120K
R0603
R32
1M
R0603
R20
4M7
R0603
C129
104
C0603
IC4
4
3
2
1
5
6
7
8
R190
10K
R0603
C128
104
C0603
C133
39P
C0603
R12
100
R0603
C23
103
C0603
R39
NA
R0603
C109
682
C0603
R176
0
R0603
+
C50
22U/16V
EC5/5
R156
47
R0603
R18
4K7
R0603
R155
47
R0603
R154
0
R0603
+
C103
47UF/10V
EC5/5
R194
0
R0603
C13
NA
C0603
C47
103
C0603
C2
473
C0603
Q1
TO-92\EBC
R2
330
R0603
R5
10K
R0603
R4
8K2
R0603
R24
10K
R0603
C43
104
C0603
R17
0
R0603
L1
2.2uH
L7.5
R54
NA
R0603
C36
100P
C0603
VC1
20P
C40
27P
C0603
R8
10K
R0603
C28
104
C0603
C52
223
C0603
C29
104
C0603
R26
47K
R0603
ZD11
15V/0.5W
ZD7.5
R13
62K
R0603
R51
1K8
R0603
R44
100K
R0603
R49
47K
R0603
R170
1K
R0603
R174
1K
L10
R173
1K
L10
C12
103
C0603
C34
470P
C0603
T1
1431
IFT\7
1
3
R50
8K2
R0603
DPX1
0830
DUP\5P
3
4
2
5
1
ANT
GRX
GTX
RX
TX
R3
15K
R0603
C6
104
C0603
R21
47K
R0603
C33
100P
C0603
T5
1436
IFT\7
4
5
3
2
1
R1
47
R0603
C45
682
C0603
T6
1961
IFT\7
+
C41
47U/10V
EC5/5
C53
12P
C0603
Q3
SOT-23\ECB
R43
39K
R0603
DV1
VCD2
C61
104
C0603
R31
47K
R0603
R38
82K
R0603
R36
220K
R0603
C125
10P
C0603
R30
100K
R0603
X1
11.15MHZ
XTAL\10A
R9
NA
R0603
C54
2P
C0603
C44
105
C0603
C37
150P
C0603
R25
68K
R0603
C24
223
C0603
R52
2M2
R0603
L10
1.2uH
L10
+
C1
47UF/10V
EC5/5
C35
18P
C0603
C11
473
C0603
C8
104
C0603
CF2
450
FILTER\2
1
5
2
3
4
+
C38
1U/16V
EC5/5
C7
102
C0603
CF1 10.7MHZ
FILTER\1
1
3
2
R14
R0603
10K
C26
7P
C0603
C16
27P
C0603
R23
56K
R0603
+
C15
2U2/50V
EC5/5
+
C30
2U2/50V
EC5/5
C18
473
C0603
+
C17
10U/16V
EC5/5
C19
102
C0603
C31
103
C0603
R15
R0603
5K6
T2
1437
4
6
3
2
1
+
C20
2U2/50V
EC5/5
R16
15K
R0603
C27
103
C0603
C55
103
C0603
R22
4K7
R0603
+
C42
2U2 50V
EC5/5
R41
R0603
47K
R46
2K2
R0603
R33
0
R0603
IC1
39
40
41
42
24
22
23
21
43
44
45
46
47
48
1
2
3
4
5
6
7
8
9
10
11
12
13
14
20
19
18
17
16
15
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
24
22
23
21
43
44
45
46
47
48
1
2
3
4
5
6
7
8
9
10
11
12
13
14
20
19
18
17
16
15
25
26
27
28
29
30
31
32
33
34
35
36
37
38
Q5
SOT-23
Q2
SOT-23
C60
18P
C0603
C39
103
C0603
R45
330K
R0603
C25
822
C0603
C48
223
C0603
C57
39P
C0603
C62
39P
C0603
C59
39P
C0603
R56
2K2
R0603
R37
100
R0603
L12
750nH
L1206
R48
22K
R0603
C58
682
C0603
R40
22K
R0603
R175
NA
R0603
C51
103
C0603
C10
470P
C0603
C9
470P
C0603
R10
39K
R0603
R7
330K
R0603
R6
10K
R0603
R193
100K
R0603
R191
68K
R0603
R192
120K
R0603
R47
NA
R0603
C131
104
C0603
+
C32
2U2/50V
EC5/5
C4
103
C0603
C22
103
C0603
ANT1
ANTENNA
PAD3
R53
15K
R0603
R42
10K
R0603
R35
100
R0603
C130
10uF
C0603
C5
NA
C0603
C46
102
C0603
C14
NA
C0603
C56
18P
C0603
R55
680
R0603
Q4
SOT-23\
ECB
C49
103
C0603
C110
47P
R0603
R34
NA
R0603
CH+
A
VREG
VB 
KX-
TC120
5RUB
/
KX-TC
1205R
U
W
/
KX-TC
1205R
US
/
KX-
TC120
5RUF
61
27 SCHEMATIC DIAGRAM (Handset)
27.1. Handset
KX-TC1205RUB/W/S/F  SCHEMATIC DIAGRAM (Handset)
TALK
RECHG
CHARGE DET
RX DATA
RESET
TALK LED
LOW LED
BACKLED
BUZ CNTL
ALERT
RX PWR
DATA
CLOCK
COL0
ROW1
ROW2
ROW3
ROW4
COL1
COL2
COL3
TX DATA
ROW5
ROW0
TES
T
XIN
XOU
T
VDD
CR-DET
ROW0
ROW5
ROW3
ROW2
ROW1
ROW4
ROW5
ROW4
ROW3
ROW2
ROW1
ROW0
CHG+
CHG-
VBAT
TP
TP
TP
TP
TP
TP
TP
R111
1K
R0603
R104
NA
R0603
L7
120 OHM COIL SMD
R0805
X3
4.0 MHZ
XTAL\10
+
C63
100uF/10V
EC4\2.5
MINI
R64
10K R0603
C68
NA
C0603
C67
NA
C0603
R56
2K2
R0603
R54
100K
R0603
R74
100K
R0603
R84
1M
R0603
C71
33P
C0603
R78
100K
R0603
R68
10K R0603
R70
2K2 R0603
R75
100K
R0603
R60
2K2 R0603
R62
2K2 R0603
R66
2K2 R0603
R57
3K3
R0603
R59
2K2 R0603
R55
39
R0603
BZ1
BZ
BZ12
1
2
C74
473
C0603
R87
100K
R0603
R86
100K
R0603
R85
1K
R0603
C69
104
C0603
C72
104
C0603
D1
D\362
ZD3
5V6 0.5W
ZD7.5
R65
330
R0603
R76
100K
R0603
R63
10K R0603
R67
2K2 R0603
R61
330
R0603
R72
1M
R0603
R80
NA
R0603
R58
47
R0603
C70
33P
C0603
LED5
GREEN
LED\SQ
LED6
RED
LEC\SQ
R83
0
R0603
R71
NA
R0603
R73
NA
R0603
R81
1M
R0603
Q7
STO-23
BATT1
3V6/300mA
CNT2P\2.5
1
2
C73
104
C0603
Q11
SOT-23
R79
1M
R0603
R77
10K R0603
LED1
GREEN
LED\SQ
LED2 LED3
GREEN
LED\SQ
GREEN
LED\SQ
LED4
GREEN
LED\SQ
L5
12uH
L7.5
Q9
SOT-23
K6
PAUSE
1
2
K9
0
1
2
K12
8
1
2
K18
2
1
2
K2
FLASH
1
2
IC2
QFP-44P
32
31
30
29
27
26
25
24
1
2
3
4
5
6
7
8
9
10
11
28
33
12
13
14
15
16
17
18
19
20
21
22
23
34
35
36
37
38
39
40
41
42
43
44
P13
P12
P11
P10
P50
P67
P66
P65
P73
P72
P71
P70
P07
P06
P05
P04
P03
P02
P01
P51
P14
P00
TEST
RESET
XIN
XOUT
VSS
NC
P60
P61
P62
P63
P64
P15
P16
P17
P20
XTIN
XTOUT
VDD
P77
P76
P75
P74
K15
5
1
2
K7
CH
1
2
K10 #
1
2
K13 9
1
2
K16 6
1
2
K19 3
1
2
K4
REDIAL
KP\RO\4.5C
1
2
K1
RINGER
1
2
K22 DIRT
1
2
K21
AUTO
1
2
K20
TALK
1
2
K3
LOUD
1
2
K5
PROG
1
2
K8
*
1
2
K11
7
1
2
K14
4
1
2
K17
1
1
2
X2
32.768KHz
XTAL\2R
C65
15P
C0603
C66
15P
C0603
L3
12uH
L4
C64
103
C0603
L4
12u
H
L7.5
L2
12uH
L4
R53
82
R0603
Q8
SOT-23
R82
0
R0603
R69
2K2 R0603
R105
10K R0603
R112 1K
R0603
D3
D\362
ZD1
10V 0.5W
D\362
C86
104
C0603
D2
D\362
C84
102
C0603
RX DATA
RF-CLK
RF-DATA
RSSI
VOL1
VOL2
TX DATA
VTX
RF-STB
R91(LOW BATT)
3.9V
0V
0V
0V
3.9V
3.9V
0V
3.9V to 0V
While charging
0V to 5V 
While charging
2Vp-p
4MHz
3.5Vp-p
32.768kHz
KX-
TC120
5RUB
/
KX-TC
1205R
U
W
/
KX-TC
1205R
US
/
KX-
TC120
5RUF
62
27.2. RF Unit (Handset)
RX
TX
KX-TC1205RUB/W/S/F  SCHEMATIC DIAGRAM (Handset (RF Unit))
IC1
VREF
IST Mix IN
VCC2
VCO CONT
VCO1
VCO2
C-RECT
RX CP
TX CP
PLL GND
TX IN
VCC3
LO1
LO2
S-OUT
DATA
STB
FL-OUT
FL-IN
COMP
OUT
C-NF
AF
OUT
REF
IN
AF-IN
REF
OUT
EXP OUT
REC IN
RO1
RO2
BAT. ALM
RSSI
DATA O/P
DATA I/P
FIL-IN
F OUT
DET.
OUT
QUAD
IF
OUT
GND2
DEC
IF
IN
VCC1
2ND
MIX
OUT
N-REC
2ND
MIX
IN
E-REC
IST
MIX
OUT
IFT\7
VR8
RX DATA
GND
CLK
VOL1
VOL2
VB
RSSI
IC2-22
RF-STB
RF-DATA
RF-CLK
VTX
TXDATA
VBAT
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
R99
4K7
R0603
C60
27P
C0603
R21
82K
R0603
C80
103
C0603
C79
103
C0603
C78
103
C0603
REC1
SD153
SIP2
R97
R0603
100K
R110
1K
R0603
R109
1K
R0603
R108
1K
R0603
C22
39P
C0603
Q1
SOT-23\EBC
R10
R0603
82K
C87
N/A
C0603
MC1
MIC
+
C51
10U/16V
EC5/2.5
R36
2K
R0603
C88
104
C0603
C3
39P
C0603
C20
NA
C0603
R107
2K2
R0603
C85
105
C0603
C10
NA
C0603
C50
103
C0603
C2
473
C0603
C52
103
C0603
R1
330
R0603
R5
10K
R0603
R3
6K8
R0603
L1
0.68UH
L7.5
R26
10K
R0603
C44
105
C0603
R15
0
R0603
C41
22P
C0603
VC1
20P
C32
104
C0603
Q2
SOT-23\ECB
Q3
SOT-23\ECB
R20
1K8
R0603
R18
10K
R0603
C38
100P
C0603
R6
10K
R0603
C28
6800P
C0603
R29
6K8
R0603
C53
223
C0603
C27
104
C0603
R13
12K
R0603
C23
102
C0603
R9
82K
R0603
C30
104
C0603
R16
10K
R0603
R51
2K7
R0603
R45
100K
R0603
R49
47K
R0603
C9
103
C0603
27P
C0603
C35
680P
C0603
T1
1431
IFT\7
1
3
R50
8K2
R0603
DPX1
DPX0830
DUP\25P
3
4
2
5
1
ANT
GRX
GTX
RX
TX
R2
15K
R0603
T5
1856
IFT\7
4
5
3
2
1
C5
104
C0603
R8
220K
R0603
R19
4K7
R0603
C34
100P
C0603
R106
150
R0603
C47
682
C0603
T6
1960
IFT\7
+
C42
47U/10V
EC5/2.5
C54
10P
C0603
Q5
SOT-23\EBC
R44
39K
R0603
DV1
VCD2
C61
104
C0603
R41
68K
R0603
R39
220K
R0603
R35 47K
R0603
R34
220K
R0603
C56
1P
C0603
X1
10.245MHZ
XTAL\10A
R7
NA
R0603
C46
NA
C0603
C39
150P
C0603
R28
120K
R0603
C21
223
C0603
L6
1.8uH
L7.5
+
C1
47UF/10V
EC5/2.5
C8
473
C0603
C36
18P
C0603
C6
102
C0603
CF2
455E
FILTER\2
1
5
2
3
4
+
C37
10U/16V
EC5/2.5
C7
104
C0603
CF1 10.7MHZ
FILTER\1
1
2
3
C24
22P
C0603
+
C12
2U2/50V
EC5/2.5
C13
27P
C0603
R25
56K
R0603
C16
473
C0603
+
C29
2.2U/50V
EC5/2.5
C17
102
C0603
+
C15
10U/16V
EC5/2.5
+
C18
2.2U/50V
EC5/2.5
R11
R0603
5K6
R17
5K1
R0603
T3
1440
4
6
3
2
1
R14
15K
R0603
C26
103
C0603
+
C43
2U2/50V
EC5/2.5
R24
4K7
R0603
R101 0
R0603
C55
103
C0603
R43
R0603
100K
R47
2K2
R0603
R38
0
R0603
Q6
SOT-23\EBC
39
40
41
42
24
22
23
21
43
44
45
46
47
48
1
2
3
4
5
6
7
8
9
10
11
12
13
14
20
19
18
17
16
15
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
24
22
23
21
43
44
45
46
47
48
1
2
3
4
5
6
7
8
9
10
11
12
13
14
20
19
18
17
16
15
25
26
27
28
29
30
31
32
33
34
35
36
37
38
Q4
SOT-23\ECB
C40
103
C0603
C59
27P
C0603
C62
56P
C0603
R52
680
R0603
R40
33
R0603
C11
NA
C0603
C14
103
C0603
R46
430K
R0603
C49
223
C0603
C57
15P
C0603
R48
22K
R0603
C58
103
C0603
R42
22K
R0603
R91
0 R0603
R96
0
R0603
R94
330K
R0603
R95 39K
R0603
R93
10K
R0603
C75
103
C0603
C76
470P
C0603
C77
470P
C0603
R12
220K
R0603
C31
103
C0603
R103
1M
R0603
ANT1
ANTENNA
PAD3
R102
333
C0603
R98
4M7
R0603
C45
683
C0603
R30
0
R0603
R37
1K
R0603
+
C48
47U/10V
EC5/2.5
R22
4K7
R0603
C33
104
C0603
R23
47K
R0603
450kHz
3.9V
0V
10.7MHz
2.1V
RX
3.9V
3.1V
(In Talk Mode)
TX
0V
KX-
TC120
5RUB
/
KX-TC
1205R
U
W
/
KX-TC
1205R
US
/
KX-
TC120
5RUF
63
KX-TC1205RUB / KX-TC1205R UW / KX-TC1205R US / KX-TC1205RUF
64
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