Panasonic KX-TCD951GB / KX-TCD955GC Service Manual ▷ View online
KX-TCD951GB/KX-TCD955GC
KX-TCD951GB/KX-TCD955GC
17
1
2
3
4
5
6
7
8
9
10
11
12
G
F
E
D
C
B
A
H
SCHEMATIC DIAGRAM (BASE UNIT)
Note:
1. DC voltage measurements are taken with electronic
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.
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.
any time with development of new technology.
KX-TCD951GB/KX-TCD955GC
KX-TCD951GB/KX-TCD955GC
18
1
2
3
4
5
6
7
8
9
10
11
12
G
F
E
D
C
B
A
H
Note:
1. DC voltage measurements are taken with electronic
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.
any time with development of new technology.
SCHEMATIC DIAGRAM (HANDSET)
KX-TCD951GB/KX-TCD955GC
KX-TCD951GB/KX-TCD955GC
1
2
3
4
5
6
7
8
9
10
11
12
G
F
E
D
C
B
A
H
19
CIRCUIT BOARD AND WIRING CONNECTION DIAGRAM (HANDSET)
(Component View)
(Flow slder Side View)
K22
K20
K17
K14
K11
M1
K1
K19
K16
K13
K10
K21
K18
K15
K12
K8
K4
K9
K5
K6
K2
K3
D8
D9
D10
J9
J10
C57
TP66
TP81
TP74
TP73
TP72
TP71
TP80
TP101
TP79
TP78
TP78
TP77
TP76
TP68
TP69
TP70
TP67
TP75
R46
C69
JMP2 C70
JMP3
R42
JMP1
C59
C58
LS22
LS21
LS12
LS11
R41
C60
C61
C62
C63
C64
R43
C63
C64
R43
R39
R40
K7
PQUP10927Z
R17
J2
J4
L2
D4
D5
C75
C74
C25
R27
R28
R28
C24
C68
C26
T2
D14
IC3
R48
R47
T3
R6
C4
R31
C65
C68
C22
R29
R50
R2
R2
R1
T1
R3
C1
L1
D2
D3
J1
D6
D7
F1
C2
D1
D15
C67
C30
C21
R26
C16
R32
C18
C19
D13
J5
J7
J6
J8
T5
C10
D11
IC2
BZ1
R8
T4
R12
RFM1
A102
A101
PQUP10927Z
R13
R11
C39
R34
R44
R9
R33
C35
R51
C47
C3
R10
R35
C13
C14
R20
C11
C71
R21
C12
D 12
X1
C48
C55
C5
R18
C28
R19
R23
C17
C15
C29
C52
R24
R25 C20
IC1
C9
C7
R15
R14
C8
R38
R37
C56
C54
C37
R36
C51
C50
C53
C6
C27
R7
R49
R30
R22
R4
R5
J3
C73
R16
KX-TCD951GB/KX-TCD955GC
KX-TCD951GB/KX-TCD955GC
20
BLOCK DIAGRAM RF UNIT (BASE UNIT)
Fig. 17
CIRCUIT OPERATION (BASE UNIT)
1. R.F. SECTION (SEE BLOCK DIAGRAM Fig. 17)
Doubler
BPF
1.89GHz
TR Switch
Ant. Switch
RF
Amp
112.32MHz
BPF
BPF=Bandpass Filter
LPF=Low Pass Filter
Mixer
Phase-Lock-Loop
Tx
Buffer
PA
Switch
P.A.
SAW
BPF
IF
Amp
RSSI
DC
Comp
IF
Amp
Det.
VCO
Buff.
DC Contr.
Rx/Tx
3V
Reg.
3V
Data
LPF
945MHz
1.89GHz
10.368MHz
4V-FILT
SLICE OUT
31
SLICE CTRL
30
RSSI
32
SYS CLOCK
34
PLL ENABLE
22
PLL DATA
21
PLL CLOCK
20
PLL PD
12
Vcc OC
18
RF ON
8
Rx DATA
29
Tx DATA
19
Vcc PA (4V)
5
,
4
PLL PWR DWN
17
Tx/Rx SWITCH
2
ANT SW2
40
ANT SW1
3
PA RAMP
39
RF1
49
RF2
42
RF2
42
GND
43
GND
44
GND
45
GND
46
GND
47
GND
48
RF1
49
GND
15
NC
14
NC
13
PLL PD
12
NC
11
GND
10
GND
9
RF ON
8
GND
7
GND
6
Vcc PA
5
Vcc PA
4
ANT SW1
3
Tx/Rx SWITCH
2
GND
1
GND
26
GND
27
GND
28
Rx DATA
29
SLICE CTRL
30
SLICE OUT
31
RSSI
32
GND
33
SYS CLOCK
34
GND
35
GND
36
GND
37
GND
38
PA RAMP
39
ANT SW2
40
GND
41
GND
25
GND
24
GND
23
PLL ENABLE
22
PLL DATA
21
PLL CLOCK
20
Tx DATA
19
Vcc OC
18
PLL PWR DWN
17
NC
16
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