Kenwood TK-2212 Service Manual page 41

K
TK-2212/2217
TX-RX UNIT (X57-7120-XX)
4.74V
IC2
UPB1509GV
1
C81 VCC1
VCC2
15p 2
IN
OUT
C82 3
IN
SW2
1000p 4
GND
SW1
VCO 1/2 DIVIDER
DCSW
APCSW
OSCIN
5C
B
5T
5R
R902
4.7k
Q901
2SK1824
RX_W/N
W/N SW/TX
TX_W/N
DTMF
DTRLOADN
STD
DIR
TDATA/DTRCLK
DI/O
SCLK
ROF/FD
TCLK/DTRDO
XIN
R422
XOUT
1k
BSHIFT ON:4.95V
OFF:0V
Q407
2SK1830
BSHIFT
EEPCLK
EEPDAT
EEPROM
IC406
AT24128N10SI27
1 8
A0 VCC
2 7
A1
WP
3 6
R424
A2 SCL
4 5
R425
GND SDA
RSSI
BUSY
TMH
VOX
5M
AFCONT
OPTDET
RXD/PTT
TXD
PCTV
MIC_MUTE
QT/DQT_IN
PTTSW
SB
X57-712 3/4
L
SCHEMATIC DIAGRAM
RF AMP
Q9 4.6V
8
2.2V
2SC5108(Y)
C83
7 *
6
R:1.65V
T:1.05V
5
C213
0.1u
C210
R208
82k
470p
R210
3.3k
R211
W/N SW/RX
Q202
3.3k
RT1P441U
W:0.011V
N:4.98V
C215
1000p
C450
X3
0.01u
L77-1633-05
C432 7.37MHz C435
R423 R410 R409
Q408
5p 0 5p
0 0
2SK1830
Q407,408
BEAT SHIFT SW
47k
47k
M
D101,202
TX/RX
RF SW
D101
C87 C101
10p 1000p
HSC277
R:0.1V
T:1.88V
5R
CF201
R:2.84V
L72-0958-05
T:0.03V
FM IF
SYSTEM
IC201
TA31136FN
C219 R216
120k
33p
Q203
2SC4649(N,P)
IF AMP
R301
47k
IC407
TC7W74FU
1
8
CK VCC
2
7
D PR
3 6
Q CLR
C451
4 5
GND Q
0.01u
FREQUENCY DIVIDER
C452
1000p
3.6864MHz CLK
X57-7120-XX L202
TK-2212 K,M
-10
TK-2217 M
-21 TK-2217 M3
N O
T:4.9V
R108 C108
T:1.11V
1.5k
39p
RF AMP
R103 C104
Q102
2SC4926YD
0 39p
L205
L202 *
*
C233 C237
*
2p(B)
(B)
MCF
XF201
L71-0619-05
38.85 MHz
C231
C224 R218
oUT IN
560 2 1 0.01u
0.01u
C302 R304
0.01u 560k
C312
12p
C315
1u
10
DTRLoADN
AGND
TCLK/DTRDo
11
TDATA/DTRCLK RXIN
12
DI/o
RXINo
R306 13 IC301
RDF/FD AQUA-L FILTERo
1k 14
AUDIO PROCESSOR
SCLK
EXPoUT
15
DIR
RXAFIN
16
XoUT RXAF
C309 C313
120p
82p
R310
R313
D301
RB706F-40
390k 100k
C311
R314 10k
1u
C310 0.068u
DETECTOR
L205 C83 C230 C235 C237 R111 R112
39n 68n 33p 8p 9p 5p 330 18
27n 47n 1000p 3p 2p 3p 220 22
R112
*
5T
DCSW
APCSW
B
RX LO1
5R
TX_W/N
R316
120k
5M
LIMLV
32
31
RXIN
30
RXINO
29
FILTERO
28
EXPOUT
27
RXAFIN
26
RXAF
DTRAIN
* C316
R311 12k
AFCONT
OPTDET
RXD/PTT
TXD
PCTV
MIC_MUTE
QT/DQT_IN
PTTSW
SB
R113 C316
330 0.047u
220 0.1u