Kenwood TK-80 Service Manual page 97

K
TK-80
TO PLL-W1
NBI NBG
W1
1
AGC
RXB
8F
C122
7.8V
C126
0.01u
L50
R69
0.1u
100
RXS
3.7V
Q18
RU201
2.8V
TH1
C123
5k
0.01u
1.9V
R68
10k
R : 0V
T : 8.0V
Q20
2SC2712(Y)
SWITCHING
R223
1k
C259
10u16
ALC
CKY
Q24 R : 0V
T : 5.3V
AMPLIFIER
R : -2.1V
TXS
T : 2.7V
Q24
3SK131(M)
TH3
R : 0V
3k
T : 2.1V
R126
1k
R : 1.9V
T : 1.9V
R134
22k
ALC
8F
IC14
NJM2904M
AMPLIFIER
R394
2.2k
1 8
TGC
7
2
6
3
4 5 R397
MMU2
0V
100k
C372
0.01u
AMUT
D81
MMU1
1SS355
4
TGC
CAR
R403
100k
R404
D79 D83
4.7k
TP6
1SS355 1SS355
Q75
2SC2712(Y)
SWITCHING
MIC
MICO
D79,81-83
REVERSE-FLOW
PREVENTION
5
3
AMB
TXB
14AF
5A
8A
RBK
86
X57-466 (TX-RX) 3/4
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L
SCHEMATIC DIAGRAM
C131 R83
2
0.01u 1.2k
D34
R80
DAN235K
1.2k
L52
0.1u
Q18,19 100u
AMPLIFIER
7.6V
L51
Q19
3SK131
(M)
7.1V
2.75V
C129
R78
4.7k 0.01u
R : 0.7V
R221
T : 0V
100
4.5V
C261 R225
10u16 100
+
R213
Q40 100
2SK208(GR)
+
0.56V
AMPLIFIER
C255
10u16
+
TP7
C177
0.01u
4
D44
REVERSE-FLOW
PREVENTION
D44
R117
1SS355
33k
-6V
2
LED
VAF
15
3
5
5.0V
R261
4.7k
4
4
AMUT
16
SWITCHING
IC8
TC4S66F
VDD
5
VSS
3
manuals search engine
M
D36 D37
DAP236K DAN235K
R94
0
D32
DAP236K
2.1V
C135
0.01u
Q21
D38
2SC2712(Y)
DAP236K
AMPLIFIER
D39
DAP236K
D32,34-43
SWITCHING
AF
1
R217 C256
2.2k 10u16 ANO
2
+
1.6V
6
4.1V
Q39
2SC2712(Y)
1.0V
AMPLIFIER 4
6
4
SWITCHING
IC3
BU4066BCFV
AFC 1 14
9
2 13
3 12
C280
0.1u
4 11
5 10
6 9
7 8
C277
0.033u
Q47
DTA124EK
SWITCHING
ABK
3 5
PAC
D84,85
REVERSE-FLOW PREVENTION
1.2V 7.6V
1.4V
0V
0V 1.2V
R285
6.6V
100
TP5
C323
2.2u10 R287
+
22k
D59
HSM88AS
C412
R293 1u R291
3.3k 100k
AM
: 2.6V
DETECTION
Q54
2SC2712(Y)
AMPLIFIER
AM : 0.6V
5
3
N
TX-RX UNIT (TX-RX SECTION) (X57-4660-21)
10.695M MCF
D40
C147 R97 XF3 XF3 C151
DAP236K
0.01u 680 1/2 2/2 0.01u
R98 R385
100 100
7.9V
OPTION
SSB W
C154 R102 C157
0.01u 330 0.01u
R386
R103 100
100
10.695M MCF
D42
XF2
C160 R107 C163
DAP236K
0.01u 390 0.01u
R108 R387
100 100
0.15V
OPTION
CW
C166 R112 R115 C169
0.01u 470 220 0.01u
R388
R113 100
100
7.9V
Q48
AMPLIFIER
Q49
SWITCHING
4.1V
C284 R257
0.1u 3.3k
2.5V
Q48
2SC2712(Y)
2.0V
Q49
2SD1757K
IC9
UPC1313HA
MIC
AMPLIFIER
R282 R284
10k 10k
VR11
C317
10k
100p
R424
10k
Q85
DTC143TK
R417
Q84
15k
DTC114EK
C320
2.2u50 R359 R281
+
10k 8.2k
C407
0.022u
R416
Q52
DTC114EK 5.6k
SWITCHING
O
TXB
10.695M RX
AGC
RXB
D41
DAP236K
R95
BMDO
0
IF1
1
7.9V
IF2
2
D43
DAP236K
4
IF3
3
IF4
4
4
AMB
SCB
SSBCW
6
AM
8F
TXB
BZ
VR9
47k
BMDI
7
SIDE
VR10 C311
47k 2200p
4.0V
7.9V
Q79
2SC2712
4.3V
(Y)
AMPLIFIER
13
C406
14
2200p
MIC
5
3
AMB
14AF
5A
8A
RBK