Kenwood TK-290-11B Service Manual page 43

P
TX-RX UNIT (X57-6132-70)
5C
5R
RXOUT
RXIN
TONE
5T
5M
C631
0.1u
MIC
MOD
T/R
ETS2
ETS1
AUDIH
DET
Q
SCHEMATIC DIAGRAM
C608 R616
0.01u 10k
R639 C626 R647
34
VSSD
91k 0.1u 0
(0.5%)
VSSA
C629
C633
MSKST
0.01u
0.01u
PWRoP
PWRoN
PWRGS
C630
PWRIN
0.01u
C621
EXPo
0.1u
C632
ECHG
0.1u
EXPGS
44
EXPIN
C627
1200p(J)
R633 R634
150k 15k
R643
560k
1 CoMMoN 8
VCC
2 INH 7
CH0
3 VEE 6
CH1
4 GND 5 ETS1
A
IC608
TC7W53FU-F
ANALOG SWITCH
R648
91k
(0.5%)
C674
0.22u
R
X600
3.579545MHz C664
0.1u
22
STB
VDDD
VDDA
TXFI
CMPo
IC607
TC35453FG
CCHG
AUDIO PROCESSOR
CoMPIN
ALCo
CALC
R661
MICGS
39k
12
MICIN
C647
0.1u
R631
200k
1 CoMMoN 8
VCC
2 INH 7
C642
CH0
3 VEE 6
CH1
150p
4 GND 5
A
IC609
R655 R658
TC7W53FU-F
470k 220k
R680
100k
R684 R685
47k 390k
S
TK-290-11B
R662
47
5.0V
5.0V
Q601
2SK1824-A
MUTE
SWITCH
C650 0.1u
C651 0.1u
C678
R:1.9V
0.1u
T:1.4V
S:0V
Q602
2SK1824-A
DC SWITCH
R,T:1.8V
S:0V
1.3V
R653
180k
C682
0.1u
D601
MA3J742
VOLTAGE
CLAMP
R659 C643 1200p
10k ETS2
ANALOG SWITCH
R682 R683
100k 100k
C672
220p
IC610
TC75W51FUF
ACTIVE FILTER/
AF AMPLIFIER
T
5C
TONE
5T
5M
MOD
T/R
5R
DET
37
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