Kenwood TK-3360 Service Manual page 50

U
TK-3360
TMP
R:2.1V
TX/RX
T:2.1V
RF SW
C201
D18 C220
R237
0
HSC277
47p 470p
TX/RX
SSM6L05FU-F
RF SW
PDSW
50T
DC SW
R:3.3V Q301
RT1N140U-T111
T:0V
R301
0
R306
50T
4.7k
+B
R:3.3V
50T
T:0V
PDSW
DCSW
APCSW
PC/BPF
50V
OPTDET
PTT/RXD
TXD
50M
33M
50R
R:5.0V
T:0V
R437 L408 L410
18n 15n
4.7k
C444 C494
2p(B) 3.5p(B)
BPF
L409
270n
MIXER
Q406
3SK318
R438
R:3.0V
1k
T:0V
C445
12p
VOXSW
AUDIO
MICM
VOXM
EXTMICSW
AFSW
MICFB
VOX
SB
PTT
50
X57-779 (A/3) 5/6
V
SCHEMATIC DIAGRAM /
R203 R206
220 8.2k
RF AMP
R:0V
T:1.7V Q201
2SC5636
R240
0
R:0V
T:1.2V
PD 5T SW
Q202
H:3.0V R:0V
L:2.4V T:4.9V
R303 R308
560 1.8k
PROTECT
Q303
2SK1830F
DC SW
R:3.4V
T:0V
C456
R445 C455
0 470p
470p
C452
470p
MICM
VOXM
MICFB
VOX
W X
原理图
R211 R213
1k 1.5k
R:0V
PRE DRIVE AMP
T:1.2V
Q203
2SC4926YD
C206 C209
12p 22p
R:0V
T:0.8V
3.1V
R314 R315
470k(D) 10k
COMPARATOR(APC)
IC301
C308
NJM2904RB1-ZB
10p 1
AoUT V+
R311 2
A-IN BoUT
150k(D) 3
A+IN B-IN
4
GND B+IN
R312
150k(D)
7.5V
DC SW
Q304
RT1N141U-T111
R:0V
T:3.4V
C896
0.047u
CURRENT
STEERING
D807
2SC4116(GR)F
KDR731
MIC AGC
R906
C897
1k
0.47u
C898
R907
0.47u
2.7k
D808
CURRENT
KDR731
STEERING
2SA1586(Y,GR)F
MICM
Q809
KTC4075E(Y,GR)
AGC
CURRENT
STEERING
D809
KDR731
R903
C904
100
0.47u
Q808
2SK1830F
VOX AMP
3.3V
33M
Y
TX-RX UNIT (X57-7790-11) (A/3)
TX
C215
R217 C217
6p 12 470p
DC SW
8 R318
Q306
RT1P441U-T111
7 470k
6
5
DC SW
R317
Q305
0 2SK1824-A
C909
R910 R912
10k
0
0.047u
AGC
Q810
CURRENT
STEERING
Q811
D810
MC2850
AGC
R908
100k
R909 1M
C907 47p
VOX AMP
IC814
TC75S51FE(F)
4 3
oUT IN-
2
VSS
5 1
VDD IN+
2SK1830F
33M
C908
470p
VOXSW
TMP
50T
PC/BPF
50V
OPTDET
PTT/RXD
TXD
50M
33M
50R
MICI
VOX SW
Q812
AUDIO
EXTMICSW
AFSW
SB
PTT