Kenwood NX-800H Service Manual page 81

F
TX-RX UNIT (X57-739X-XX) (A/2)
TEMP
SENSOR
IC1
LM73CIMKX-0
R918
4
SMBCLK VDD
5
100
ALERT GND
R919
6
SMBDAT ADDR
100
3.21V
X1
19.2MHz
VC VCC
GND oUTPUT
TCXO MOD
33C
2
1
G
SCHEMATIC DIAGRAM
3.31V
3
3.17V
2
1
BUFFER AMP
C92
(19.2MHz)
L1
0.01u
Q11
4.7u
2SK1215-E(E)
C88
0.01u 0V
0.64V
1.65V
R3
330k
IC2
LMC7101BIM5
1 OUTPUT 5
V-
1.65V
2
V+
R5 C11
3 4
INPUT+ INPUT-
220k 10u
BUFFER AMP
(TCXO MODULATION)
H
NX-800/800H
50C
C39
C34
12n
47p
FC-R : 7.08V
RIPPLE FC-T : 6.61V
FILTER
14.34V 13.72V
Q1
2SC5383-T111
R80 R81
0 0
14.30V
33C
C16 0.01u
C17 0.01u
3.31V
13
LD/PS2
L31
14
VCCcp 2
15
CPout2
16
R6 R10
/FVco
17
4.7k 0
FVco
18
VCCcp2
L32
3.31V
R12
4.7k
2
1
I
4.95V
R43
10
3p
L4
C49
1.44V
10p
0.92V
Q3
2SC5636
BUFFER AMP
(PLL FIN)
BYPASS
DIODE
D2
DA221
IC4
R36
LMC7101BIM5
10M
1 OUTPUT 5
V-
2
V+
R76
3 4
INPUT+ INPUT-
470k
BUFFER AMP
(VCO TUNE)
VCO TUNE
L35
L33
3.29V
IC3
PLL IC
4.97V
6
CPout1
5
VCCcp1
4
LD/PS1
3
/Fin
2
Fin
1
VCC
3.26V
C19 100p
C20 100p
C21 100p
X57-739 (A/2) 2/16
J
CV
R13
47k
2
1
81