Read Panasonic KX-TC1215RUB Service Manual online
33 SCHEMATIC DIAGRAM (BASE UNIT)
TP13
C801
1000P
TP14
R810
0
C807
Z0.1
C865
K0.01
R824
10K
C833
J56P
R817
27K
OSC
REF
DRIVEWR
IC802
1
2
3
4
5
6
R815
180K
C815
K0.01
C812
J120P
R802
330
C822
K0.01
R820
6.8K
6.8K
R827 82K
R862
470
R822
2.2K
DUP801
NC
3
VDD
4 OUT
1
IN
2
GND
C829
Z0.1
CF802
5
4
3
2
1
C819 Z0.1
C821
K0.047
C825
K1500P
TXPOW
R806
100K
C841
J18P
DET
R805
6.8K
D804
R865
220
EXPANDER
MCU
MIC
MUTE
10 Bit
programmable
counter
RESET
14 Bit
programmable
counter
SQ
VSS
1st LOCAL
TX PD
PLL REG
OSCILLATOR
1st MIX
LD(TX/RX)
2nd
MIX
LD(RX)
DATA
AMP
RX PD
8
14 Bit
programmable
counter
IF
LD(TX)
CLK
DATA
EN
LIMITTER
Vcc2
GND2
FinTX
SIG OUT
X TAL OSC
C DET
VcapRX
POWER
DOWN
ZAP
GND1
VCC1
NC
DET
E DET
PE(GND)
3
GND3
SQ OUT
RX D
A
T
A
OUT
TO SQ OUT
FILTER
PREAMP
RXMUTE
MICAMP
COMP
SPLATTER
FILTER
LINEAMP
LINEMUTE
5.5V REG
25mA max
NC
ATT(0/2dB)
Vin
0.5dB
NDET
IC801
1
2
3
4
5
6
7
8
9
10 11 12 13 14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
C834
Z0.1
C843
K0.01
C813
J120P
C835
G39P
C814
K0.01
C838
16V10
R809
15K
CF801
C842
K0.01
C839
50V2.2
C891
J22p
R818
82K
C820
K0.022
R807
33K
R856
22K
K0.01
C805
IFOUT
C810
J68P
C864
K0.1
C830
J33P
X801
11.15MHz
RXANT
C804
K0.01
K0.01
C806
K0.1
C856
K0.022
C863 Z0.1
RXDT
C824
J270P
R821
10K
TXVCO
R864
220
220
TXANT
C831
Z0.1
C811
Z0.1
C832
K5600P
9VREG
C826
Z0.1
L851
1
2
3
4
5
6
7
K0.01
C854
RXVCO
R860
10
10
C809
Z0.1
C840
K0.22
C816
K1200P
C837
K0.01
C818
K560P
C828
K0.01
R813
18K
R804
220K
220K
L801
1
2
3
4
5
6
7
C836 G27P
C866
16V22
DUP802
2
GND
3
VDD
4
GND
1
IN
5
GND
6
OUT
RXGND
DUP803
NC
3
VDD
4 IN
1
OUT
OUT
2
GND
22K
R814
C867
NC
Q856
R919
10
10
C895
K0.01
C896
J100P
C855
K820p
C870
K820P
R855
100K
R866
470K
C852
K0.1
DUP804
2
GND
3
VDD
7
GND
1
OUT
IN
6
4
TrOUT
5
TrIN
C827
16V47
16V47
L802
1.2uH
J8860
C847
K0.01
K0.01
C868
0
Q354
C808
16V10
R918
820
R920
22K
NC
C802
C844
NC
C817
NC
C894
NC
C845
NC
L804
NC
R803
NC
R808
NC
VR3
NC
VR4
NC
TXGND
SQL
J39P
C859
K0.01
C860
K0.01
C853
K0.01
C861
J22P
C857
K3300P
C858
C846
Z0.1
K0.01
C862
10K
R852
68
R801
100K
R240
100K
R615
15K
R819
47K
R857
22
R859
4.7K
R608
4.7K
R610
4.7K
R609
100K
R614
3.3K
R858
1.0M
R854
100K
R853
D851
VR2
100K
C823
K4700P
180K
R828
C848
NC
C849
NC
C850
NC
C893
NC
JP2
NC
Q202
100K
R238
10K
R239
R811
NC
VR1
100K
100K
L803
0.47uH
J887
NC
Q855
Q858
C897
2200P
MDM_CLK
MDM_DATA
MDM_DR
MDM_STD
RELAY
0
R730
D805
1kHz
1kHz
9V
5V
DTMF
TX AF=
-14.5dBm
-14.5dBm
-6.5dBm
-31dBm
-30
dBm
dBm
-37
dBm
dBm
-35dBm
LINE
MOD
TX
MOD
TX
-50dBm
RX AF=
-18dBm
-18dBm
RX AF=
-18.5dBm
-18.5dBm
RX AF=
-19dBm
-19dBm
TX AF=-48.5dBm
TX RF=
-4dBm
-4dBm
TX RF=-6.5dBm
TX RF=
8dBm
8dBm
TX RF=
-7dBm
-7dBm
49.97MHz
60dB
60dB
µ
V emf
1kHz 3kHz Mod
TX AF=
-11dBm
-11dBm
TX RF
12dBm
12dBm
-27dBm
(1)
(2)
(3)
(4)
(5)
(5)
(6)
(7)
(8)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(16)
(17)
(18)
(19)
(19)
(20)
(21)
(22)
74
KX-TC1215RUB
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