PANASONIC KX-tcd951 Service manual

KX-TCD951GB/KX-TCD955GC KX-TCD951GB/KX-TCD955GC

CIRCUIT BOARD AND WIRING CONNECTION DIAGRAM (BASE UNIT)

12

3456

(Component View)

7

8 9 10 11 12

(Flow slder Side View)

A

49 42

1

16

41

J1

16

J2

SA4

B

JMP1

JMP3

JMP4

SA3

R69
C43

27

C45

C148

R122

R112

100

C142

R73

T11

R52 R51

C28

R43

RL1

D1

JMP16

T2

1

IC6

C156

C44

R4

C127

R136

R113

16 1

R74

T12

T13

R72

C29

C47

R66

1

32

R54

IC1

R55

R53
R71

IC2C145

IC201

C

R114

15

D

C136

BUZ101

18

E

F

IC103

T103

R104

T102

G

D103

D12

D102

R103

JMP206
JMP205
JMP204
JMP203
JMP202
JMP201

R117

R118

C137

R119

D101

C101

C146

C151

C116

R102

T101

C141

R101

R116

C106

R107

C125

C118
C117
C110

R109

R110

C111

X101

C105

C143

R105

R115

C104 C102

IC101 IC102

C150

C104

C115

C107

C114

R111

R131

8

IC104

C27

1

R49

R70

C50

C139

C144

C154

R41

C103

R106

C152

C113

D104

C140

1

R121

C108

2616

C147

C109

JMP12

L1

T1
R1

R2

C25

D10

C48

R56

T16

JMP21

SA2SA1

1

T8

R36

R57

C32

ICT

JMP7

JMP18

JMP17

C2

C1

T9

R58

C33

R65

L2

R3

JMP6

JMP5

JMP8 JMP9 JMP15

L3

JMP19

JMP20

R7

R8C4

C17

R5

R6

C18

C3

C19

D2

R24

R23

C20

D3D4

R25

R30

D9
C36

R35

R39

R40

R59

L5

C26

D11 D13

R62

R63R64

JMP10

C5

C16

D8

C10

R13

R60

C34

T14

C37

T15

JMP13 JMP14

JMP22

D6 D7

R9

C7
R10

R15
R18

IC3

R17

1

R26

T4

R28

T5

R29

C21

C35

T6

R31

R32

R34

R33

DL

R61

C38

DE

C8C6

R11

R16

C22

C39

R27
R120

T7

C9

R12
C11

C15

R21 R19

R22

R20

PWR

GND

I/O

LI

C40

IC7

C41

C42

C12C14

IC4

C13

D105

R68R67

1

1

J3J4

K101

PQUP10924Z

H

15

KX-TCD951GB/KX-TCD955GC KX-TCD951GB/KX-TCD955GC

SCHEMATIC DIAGRAM (BASE UNIT)

12

A

B

C

3456

7

8 9 10 11 12

D

E

F

G

H

Note:

1. DC voltage measurements are taken with electronic
voltmeter from negative voltage line.

Important Safety Notice:
Components identified by mark have special characteristics
impotant for safety. When replacing any of these components, use
only manufacturer's specified parts.

This schematic diagram may be modified at
any time with development of new technology.

17

KX-TCD951GB/KX-TCD955GC KX-TCD951GB/KX-TCD955GC

SCHEMATIC DIAGRAM (HANDSET)

12

A

B

C

3456

7

8 9 10 11 12

D

E

F

G

H

Note:

1. DC voltage measurements are taken with electronic
voltmeter from negative voltage line.

This schematic diagram may be modified at
any time with development of new technology.

18

KX-TCD951GB/KX-TCD955GC KX-TCD951GB/KX-TCD955GC

CIRCUIT BOARD AND WIRING CONNECTION DIAGRAM (HANDSET)

12

3456

(Component View)

A

B

M1

K22

K21 K18 K15 K12

K20 K17 K14 K11

C

K1 K19 K16 K13 K10

D

K8 K4

K7

K6 K2

K9

K5

7

D8

D9

K3

D10

8 9 10 11 12

LS12 LS11

C57

TP66

J9 J10

TP68

TP69

TP70

TP67

R46

TP81

C69

C61
C62
C63
C64
R43

JMP2

C59

JMP1

C58

R41
C60

TP76

C70

TP74

TP73

TP80
TP79
TP78
TP77

JMP3
R42

TP72
TP71

R39

TP75

R40

PQUP10927Z

LS22 LS21

TP101

E

R16

R17

F

D4

D5

C75
C74

G

D3

D2

J4

J2

L2

C25

R27

C24

R28

C68

C26

R3

R1

T1

D6 D7

C1

L1

J3

T2

R50
R2

J1

R5

D14

C2

R48

IC3

C73

C4

R31

C22

C65

C68

C67

C21

C30

R32

D15
D1

D13

F1

J5 J7 J6 J8

R47

R6

C18

R29

R26
C16

T3

R30

C19

C27

C8
R14

R15

C7

C9

R25
R24

C29

R22R4

C17

C6

C20

C52

C15

R23

R38

C54

C28

T5

R37

R7

C5

R18
R19

C10

H

(Flow slder Side View)

R36

C37

C56

D11

R49

IC1

C55

C51
C50

C53

IC2

R20

C13C14

C11

R21

BZ1

D 12

C12

C71

C3

X1

C35

R51

R33

R9

R44

C39

R11

R34

R13

PQUP10927Z

C47
C48

T4

R10

R35

R12

R8

A102

A101

RFM1

19

42

RF149RF2

1.89GHz

112.32MHz

ANT SW13
ANT SW240

Tx/Rx SWITCH2

PA RAMP

39

GND
GND
GND
GND

PLL ENABLE

PLL DATA

PLL CLOCK

Tx DATA

Vcc OC

PLL PWR DWN

NC

SAW

BPF

IF

Amp

IF

Amp

Det.

Data

LPF

Rx DATA

29

BPF

TR SwitchAnt. Switch

RF

Amp

BPF

Mixer

BLOCK DIAGRAM RF UNIT (B ASE UNIT)

BPF=Bandpass Filter
LPF=Low Pass Filter

1.89GHz

P.A.

Vcc PA (4V)5,4

28

29

30

31

32

26

GND27GND

25
24
23
22
21
20
19
18
17
16

GND15NC14NC13PLL PD12NC11GND10GND9

Rx DATA

RSSI

SLICE OUT

SLICE CTRL

PA

Switch

33

34

GND

GND35GND36GND37GND

SYS CLOCK

RF ON8

GND7

38

39

PA RAMP

GND6

Vcc PA5

Vcc PA4

ANT SW13

Tx

Buffer

40

41

42

GND

43
44

ANT SW2

45
46
47
48
49

Tx/Rx SWITCH2

GND1

RF2
GND
GND
GND
GND
GND
GND
RF1

Doubler

PLL PWR DWN

17

945MHz

VCO Buff.

RSSI

Phase-Lock-Loop

DC Contr.

Rx/Tx

DC

Comp

4V-FILT

3V

10.368MHz

3V

Reg.

SLICE OUT

31

SLICE CTRL

30

RSSI

32

SYS CLOCK

34

PLL ENABLE

22

PLL DATA

21

PLL CLOCK

20

PLL PD

12

18

Vcc OC
RF ON8

Tx DATA

19

KX-TCD951GB/KX-TCD955GC KX-TCD951GB/KX-TCD955GC

20

Fig. 17

1. R.F. SECTION (SEE BLOCK DIAGRAM Fig. 17)

CIRCUIT OPERATION (BASE UNIT)