Read Panasonic KX-TCD951GB / KX-TCD955GC Service Manual online
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
Click on the first or last page to see other KX-TCD951GB / KX-TCD955GC service manuals if exist.