Kenwood TK-980 Service Manual page 22

K
TK-980/981
TX-RX UNIT : TX-RX SECTION(X57-6520-XX) (A/2)
RF SW
D18
C234 C401
2p(B)
HVC131
RF SW
D19
HVC131
C158
4p
R:8.00V
T:0V
KTA1298-P(Y)
C159
4p
R82
R:7.31V
T:7.95V
R83
R:4.83V
T:0V
Q10
LTC014EEBFS8
DC SW
8C
KEY
T/R
L34-4787-05
C104
0.01u
R S I S
R158
R:1.38V
T:2.13V
DM
POR
SB
W/N
IGN
OE
ES
DT
CK
5C
8.02V
C43
100p
AMPLIFIER
IC6
TA75W558FU-F
1 8
2 7
3 6
4 5
R:2.31V
T:3.61V
CODE3
SQ
AHK
LOK
IGN
HNC
PSW
BPO
X57-6520-XX (A/2) XF1
1 - 2 TK-980 L71-0525-05
-13 TK-981 L71-0583-05
22
X57-652(A/2) 3/4
L
SCHEMATIC DIAGRAM
RF AMP.
Q202
2SC3356-A(R24)
C235 C402 C403
2p(B) 2p(B) 2p(B)
R223
1k
DC SW DC SW
Q11
Q12
2SB1132(Q,R)
R:7.98V
T:7.21V
DC SW
Q13
LTC014EEBFS8
8.02V
L6
C157
0.1u
L10
1u
TP3
IC11
TA31136FNG
FM DEMODULATION
C103
0.1u
CF1
C461 C462 R159
0 0.1u 0.1u 0
R:5.03V
T:0V
SHIFT/STORE
SHIFT/STORE
REGISTER
REGISTER
IC7
BU4094BCFV BU4094BCFV
1 16 1
STRB VDD STRB
15
2 2
DATA OE DATA
14
3 3
CLK Q5 CLK
4 13 4
Q1 Q6 Q1
5 12 5
Q2 Q7 Q2
6 11 6
Q3 Q8 Q3
7 10 7
Q4 Q'S Q4
9
8 8
VSS QS VSS
CODE4
CF1 R79 R82 R83 R96
L72-0998-05 3 9 150 150 330
L72-0986-05 18 270 270 180
M
C249 C404 C405
10p 2p(B) 2p(B)
R:-0.36V
T:5.73V
R255
22
R256
22
R:-0.36V
T:7.82V
R:1.35V
C153
T:0V
10p
R:0.73V
T:0V
XF1
C92 R100 44.85M
0.01u
Q15
2SC2059K(P)
IF AMP.
C96
18p
5.09V
ST
C63 R76
15k
1u
IC8
16
VDD
15
OE
14
Q5
13
Q6
12
Q7
11
Q8
10
Q'S
AF MUTE
9
QS
SWITCH
Q8
DTC363EU
R60
4.7k
D11
DC SW
DAN202U
R100 R323 C84 C216 C219 C234
330 47 12p 1.5p(B) 11p 15p
150 68 22p 1p(B) 12p 100p
N
C330
RF AMP.
C275
Q204
2SK2596-E
R:0V
0.22u35
T:9.53V
C274
220p
C97
1 1000p
APC DRIVE
Q19
1 2SB1565(E,F)
Q17
2SC4116(GR)F
APC
PRE DRIVE
R:7.72V
T:0V
C219
Q203
MIXER
3SK255-A
D
G2
G1
S
R96
R:0.95V
T:0V
DC SW
Q205
LTC044EEBFS8
C171
100p
13.55V
AF AMP
7.50V
D16
REVERSE
CURRENT
PREVENTION
Q9
13.27V
LTA014YUBFS8
AF MUTE
SWITCH
CODE2 CODE1 OPT
13.34V
C253 C276 C330
6p 4.7u20 15p
8p 2.2u20 47p
O
R258
0
B
8T
8C
KEY
8R
8R
5.02V
PC
SB
5C
IGN
IC10
LA4422-E
IGN
TOF
PSW
PA