Kenwood NX-800H Service Manual page 50

K
NX-800H
L6
R40
0 10u
L40
R41 L7
10u
0
R352
0
CV
R25 R29 R35 R37
0 0 390 10k
R : 3.07V
T : 3.05V
2
R346 R204
22k 47
R213
1k
W : 2.89V
N : 0.29V
W : 0.99V
C330
N : 1.09V
0.1u
D201
DAN235E
SW CF SW
(W/N) (W/N)
C332
Q201
RT1P141U 0.1u
-T111
SW
(W/N)
W : 0V
Q202 N : 3.29V
RT1N441U
-T111
W : 3.27V
N : 0.02V
2
1
50
X57-775 (A/2) 3/16
L
SCHEMATIC DIAGRAM
D3,7,9,10
FREQUENCY
CONTROL
D7
C50 R84
150p 0
1SV282-F
D4,8,11,12
FREQUENCY
CONTROL
C51 R85 D8
150p 0
1SV282-F
L41
C55
C54
0.1u
1u
IC5
TC75W51FK(F)
1.65V
R27 1 8
VDD
7
47k
1.65V
2
R34
3 6
4 5
1k
VSS
VCO MODULATION/
BUFFER AMP (CV)
4.86V
C215
L202
100p
560n
L204
R207 R332 C211
47n
330k 0 10p
C208
0.01u
Q203
0.66V
2SC5636
2nd LOCAL
BUFFER AMP (X3)
4.97V
WIDE
CF201
W : 0.99V
L72-1017-05
N : 1.09V
R343 C331
IN oUT
CF SW
0 0.1u
(W/N)
D202
DAN235E
Narrow
CF202
L72-1021-05
R344 IN oUT C333
0 0.1u
M
R : 3.21V
T : 0V
L19
220n
C66
RX VCO
7p
VCO
L18
C59
47p 35.5n
Q5
2SK508NV(K52)
L21
220n
C69
TX VCO
6p
VCO
C58 L17
28n
27p
Q6
2SK508NV(K52)
TX
MODULATION
Q7
SSM6L05FU-F
R56
R49
470k
68k
R82 R83
0 0
4.98V
Q4
4.21V
2SC5383-T111
RIPPLE
FILTER
4.87V
2
C220 C222 C223
47p 0.01u 0.01u
TK10931VTL-G
1
C210
OSC<B>
2
0.1u
OSC<E>
3
MIXo
R210 10
4
VCC
C225 R338 0
5
AMIFi
0.1u
C217 0.1u
6
AMIFdecp
R216 C228 0.1u
7
FMIFi
0
C218 4.7u 8
FMIFdecp1
C219 4.7u
9
FMIFdecp2
C227 82p
10
CD201 LIMo
11
QUADi
R219
12
L79-1850-05 FMDETo
10k
R215
3.3k
Q212
EMD9
SW (W/N)
2
1
N O
TX-RX UNIT (X57-7750-18) (A/2)
R58
180
0.74V
R62
C74
150k
0.5p
Q9
2SC5636
BUFFER AMP
(VCO)
R : 0V
T : 3.47V
R153
150
C76
0.5p
Q8
SSM3505FU-F
T/R SW
(VCO)
R : 0.02V
T : 3.31V
4.35V
IF IC
IC202
R345 C234
24
RFin
0 0.01u
23
GND
22 C232 0.1u
COMPo
R227 100k
21
COMPi
4.92V
R223
20
NAMPo
270k
C341 R334
19
NAMPi
1u 0
R230
18
AGC
1k
17
AGCAMPo
R234
16
RFAGCo
10k
15
RSSIo
14
AMSW
R228
13
AMDETo
22k
C79
TX
7p
3.94V
R237
100k
0.74V
RX
Q204
2SC3356(R23)
1st
IF AMP
2
1