Read Panasonic KX-TC1245RUB Service Manual online
29 SCHEMATIC DIAGRAM (HANDSET)
RADIATION POWER
RX-SENSITIVITY
RX-SENSITIVITY
TERMINAL RX-SENSITIVITY
1
OUT
4
GND
3
VDD
6
VDD
5
IN
2
GND
DUP901
1
Z0.1
C913
1
K0.01
C912
1
R912
2.2
1
C914
NC
2
3
1
Q902
1
C915
K0.01
1
NC
R913
1
NC
R909
TXGND
1
VDD
2 T-E
3
T-C
4
F out
5
GND
6
OSC
OSC
DRIVE
IC901
1
3
2
NC
VOL901
1
R910
22
1
J22P
C908
1
R911
10
1
K0.01
C907
1
K0.01
C909
1
R907
100
1
K0.01
C910
1
R908
330
1
C906
J47P
1
C911
D10P
RF_PWR_CONT
TXPOWER
1
NC
JP806
1
0
JP807
TXVCO
1
K0.1
C834
1
Z1.0
C832
1
C833
K0.01
1
NC
C831
1
C830
Z0.1
X801
11.15MHz
56
CLK
51
GND
55
DATA
52
53
54
SIG OUT
49
PLL
50
Fin TX
7
VDD
6
5
4
3
1
EN
2
C DET
48
47
46
44
45
43
VcapRX
38
GND1
39
40
36
VDD1
37
42
41
26
27
28
25
24
23
E-DET
29
NOISE DTC
31
30
35
34
33
32
11
13
RX DATA OUT
12
VDD2
14
GND2
10
8
9
15
19
PE(GND)
20
GND3
17
18
16
22
21
MCU
SPLATTER
FILTER
FILTER
LD(TX/RX)
14 bit
programmable
counter
programmable
counter
ATT(0/2dB)
COMP
SG OUT
LD(TX)
LD(RX)
TX PD
RX PD
1st
MIX
MIX
1st LOCAL
OSILLATAR
OSILLATAR
2nd
MIX
MIX
10 bit
programmable
counter
programmable
counter
14 bit
programmable
counter
programmable
counter
/8
EXPANDER
SQ
5.5V REG
25mA max
25mA max
+0.5dB
FILTER
FILTER
TO SQ OUT
PRE AMP
SQ
RX-MUTE
ZAP
MIC
MUTE
MUTE
POWER
DOWN
DOWN
POWER
DOWN
DOWN
ZAP
LIMITTER
MIC AMP
LINE AMP
IC801
1
C829 G27P
1
C828 G39P
SIG_IN
PLL_DATA
PLL_CLOCK
SIGOUT
1
K0.1
C823
1
C827
K0.1
1
C824
K2200P
1
C825
J68P
1
R820
68K PSAVE
1
R603
2.2K
1
C826
NC
PLL_EN
1
C818
K0.1
PWR_SAVE
1
3
2
VOL802
5K
1
680K
R819
1
C819
K0.1
1
560
R816
1
3.3K
R814
+
C817
6.3V10
1
C816
K0.01
1
R818
0
1
10K
R817
1
220
R815
1
D801
NC
1
NC
C821
1
C815
Z0.1
PDOWN
+
C820
6.3V10
1
C813 Z0.1
1
R812 33K
1
C822
J22P
1
R811 10K
1
K4700P
C814
RX_DATA
SP4
SP3
SP1
SP2
1
R810
NC
1
3
2
VOL801
100K
MIC1
MIC2
+
-
MIC
1
C901
NC
1
R901
0
1
R902
1.0M
1
R903
68K
1
C904
K0.018
1
VD901
1
R904
47K
1
R905
47K
1
C902
K0.1
1
C903
K0.022
TX_DATA
1
J27P
C905
1
R906
2.2K
1
3
2
4
5
6
7
T901
2
3
1
Q901
TX_PWR
1
R821
0
1
R822
12K
1
R823
10K
1
R824
0
1
C837
K4700P
1
R825
22K
1
3
2
4
5
6
7
T801
1
C838
0
1
C845
0
1
D803
NC
1
C840
NC
1
R827
68
1
JP801
0
+
C842
6.3V10
1
C843
Z0.1
1
IN
4
GND
3
VDD
5
GND
6
OUT
2
GND
DUP801
1
JP802 NC
1
NC
L802
1
L803 2.2uH
1
NC
C839
1
NC
C844
1
K0.01
C846
1
NC
C847
1
Z0.1
C848
1
K0.01
C849
1
R828
0
3
1
2
CF801
10.7MHz
RXVCO
1
C835
NC
1
C836
J22P
RXGND
ANTENA
1
D802
NC
1
R826
NC
1
R829
NC
1
R830
330
1
3
2
4
5
6
7
NC
T802
1
IN
3
VDD
2
GND
4
OUT
NC
DUP802
RFRX
SET SPEC(10CH)
ANT
1
C841
NC
1
0
JP805
1
L801
0.82uH
BAT-LOW
NOISE-SQ
3m
3m
3m
CONSUMPUTION
CHARGE
CHARGE
TALK
NORMAL
NORMAL
NC
NC
NC
NC
NC
NC
NC
3KHzdev / 1KHz , 60dB
-50dBm / 1KHz
CONDITION
ITEM
DATA-MOD
SP-OUT
SP-OUT
MIC-MOD
TX-POWER
RX-VCO
TX-VCO
DATA
1.5V
1.1V
1.5V
1.1V
0dBuVemf
1.9KHzdev
5.5KHzdev
-21dBm/VOL-M
5.5KHzdev
-21dBm/VOL-M
10dBm
1
K470P
C804
1
R805 47K
1
R804
0
1
390K
R801
1
J120P
C801
1
C802 J120P
1
K0.047
C808
1
K0.1
C809
1
K0.1
C812
1
C852
Z0.1
1
C851
Z0.1
1
C850
Z0.1
NDTC
IFOUT
IFGND
1
J68P
C853
1
K0.1
C854
1
3
4
5
2
CF802
1
R831
1.0K
+
C855
6.3V10
1
750
R832
1
0
JP804
1
0
JP803
DTCOUT
1
K0.1
C810
1
K0.1
C807
1
K4700P
C806
1
K0.1
C803
1
R806 39K
1
R807 5.6K
1
0
R808
1
22K
R803
1
C805
NC
1
C811
K0.01
1
15K
R809
1
18K
R802
30.3MHz
60dBuVemf
1kHz/3kHz MOD
60dBuVemf
1kHz/3kHz MOD
RF MIC-MOD
=3.2kHz dev
=3.2kHz dev
RXRF=-48.7dBm
TXRF=6.0dBm
TXRF=6.0dBm
RXRF=-81.0dBm
RXRF=-35.7dBm
RXRF=-39.4dBm
RXRF=-19.7dBm
RXRF=-45.1dBm
30.3MHz
30.3MHz
RXRF=-21.3dBm
RXAF=-18.9dBm
RXAF=-27.3dBm
-22.0dBm
RXAF=-19.4dBm
10.7MHz
RXAF=-34.5dBm
40MHz
1kHz
1kHz
450kHz
TXRF=6.2dBm
40MHz
40MHz
TXRF=0dBm
40MHz
40MHz
TXRF=-11.6dBm
-40dBm
1kHz
1kHz
TXRF=10.0dBm
TXAF=-14.0dBm
1kHz
1kHz
TXAF=-57.2dBm
1kHz
1kHz
RX DATA
500Hz/1kHz
3.5V
500Hz/1kHz
3.5V
RXAF=-27.7dBm
(1)
(2)
(3)
(4)
(5)
(6)
80
KX-TC1245RUB
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