Kenwood TK-361SA Service Manual page 31

F
TX-RX UNIT (X57-6900-21)
CV
D2,4,6,7
VCO OSCILLATION (TX)
FREQUENCY
D6
CONTROL
/TX VCO
HVC376B
L24 D7
R22 L10
100n
0
HVC376B
TX MODULATION
R25 C45 L12
R26 R31
22k 10k 1u 470k
VCO OSCILLATION (RX)
C902 R30
1u 82k
L11
100n
QTTCXO
PLL_UL
PLL_STB
PLL_DAT
PLL_CLK
B
5T
OSCIN
SP1
SP2
5R
5C
EN1
EN2
EN3
EN4
EN5
VCC
VSS
R421
51
OPTDET
52
1k
AF_CONT
53
CALLING ALERT SW
54
DTMF SW
55
56
57
58
59
60
VCC
VCC
61
62
VSS
VSS
63
GND
30622MAP490GU
64
GND
65
66
67
68
69
70
71
72 LEDTX
LEDTX
73 LEDRX
LEDRX
74 PF1
LOCK
75 PF2
SCAN
BATT
5T_C
5R_C
5C_C
RESET
INT
AF_CONT
SB
5M
PTT
OPTDET
G
SCHEMATIC DIAGRAM
T:3.37V
L19
220n
C64
C52 5p
L16
27n
7p
VCO/TX
Q4
2SK508NV(K52)
MODULATOR
R36
R34
1M 270k
R:3.4V
L18
D8
220n
HVC376B
C65
D9 C55
L17 7p
27n
12p
HVC376B
VCO/RX
D3,5,8,9 Q3
2SK508NV(K52)
FREQUENCY
CONTROL
/RX VCO
R447
12k
25
24
23
DTRLOADN
STD
22
QTVCO
DIR
21
TDATA/DTRCLK
20
DI/O
19
SCLK
18
RDF/FD
17
TCLK/DTRDO
16
INT
R419
15
VCC
MCU 14 47k
VCC
13
IC405
XIN
12
VSS
11
XOUT
10
RESET
9
8
BSHIFT
R420
7
GND
6 47k
BYTE
5
EEPCLK
4
EEPDAT
3
2
DTMF
1
PCTV
C431
0.01u
4.96V
H
R40
100
RF BUFFER AMP
Q6
0.72V 2SC5108(Y)F C78 C83
C73
33p 15p
0.5p
(B)
3.7V
DC SW/TX VCO
Q5
R:4.94V
RT1P430U
T:0.58V
L22
R:0.59V
T:4.94V
R37 Q7
RT1P430U
100
DC SW/RX VCO
C74
RIPPLE FILTER
0.5p
Q8
2SC5383-T111
CURRENT
STEERING
R901
4.7k
L404
R422
1k
BSHIFT ON:4.95V
C432
R423
OFF:0V
Q407
5p
2SK1830F
BEAT SHIFT SW
EEPROM
IC406
BR24L08F-W
1 8
A0
VCC
2 7
A1 WP
R424
6
3 47k
A2 SCL
4 5
GND SDA
R425
47k
I
TK-361SA
TX/RX
RF SW
C87 D101
4.73V
10p HSC277
3.4V
RF AMP
Q9
2SC4619(P,Q)
R:2.9V
T:3.0V
TX/RX
RF SW
R:2.87V
X2
BEAT SHIFT SW
L78-1414-05
7.3MHz Q408
C435
2SK1830F
0 5p
C302
R301
10k 270p
DETECTOR
D301
RB706F-40
R308
0
R354 R355
10k
10k
J
T:2.85V
C101 C102
12p
470p
L250
18n
C290
2p
(B)
TH_DET
DCSW
B
5T
APCSW
OSCIN
SP1
RX LO1
SP2
5R
5C
MOD
DTMF SW
CALLING ALERT SW
TX_W/N
DTRLOADN
STD
TCLK/DTRDO
TDATA/DTRCLK
DI/O
RDF/FD
SCLK
DIR
3.6864 MHz CLK
R426
XIN
1k
AMP3O
C354 R357
0.1u 0
PCTV
TXD
MIC_MUTE
QT/DQT_IN
BUSY
RSSI
AF_CONT
SB
5M
PTT
OPTDET
31
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