8-10
Schematics, Board Overlays, and Parts Lists – VHF
: Transceiver (RF) Section
May 28, 2008
6871620L01-C
Figure 8-9. VHF Frequency Generation Unit (Synthesizer) Circuit – 1 of 2
C230
3
1
5
2
NC
330pF
R216
U201
LMH6723
4
8.2K
R208
100pF
C229
C235
33K
100pF
C201
0.10uF
C205
0.10uF
V3A
V3A
100pF
C214
0.1uF
A3
6
K1
3
K2
2
K3
1
NC
C225
D202
4
A1
A2
5
C234
L207
2
1
.01uF
1uH
V3A
2.2uH
L202
.01uF
C231
2K
NC
R202
C206
10uF
V5A
0.10uF
C250
C219
2000pF
V5A
C213
1000pF
C220
NC
33K
R201
10uF
10K
R218
VSF
NC
NC
C218
.047uF
V3A
VSF
220pF
C337
2.2uH
L203
C209
220
R210
NC
0.10uF
C211
1000pF
NC
0.10uF
.047uF
NC
C236
V3A
C217
U203
AD5320BRT
DIN
4
D
N
G
2
SCLK
5
SYNC
6
D
D
V
3
VOUT
1
NC3
NC4
8
OUPUT
3
C
C
V
4
1
VCONT
Y200
DSA321SD
16.8MHz
2
D
N
G
NC1
5
6
NC2
7
A1
4
A2
5
A3
6
3
K1
2
K2
K3
1
D201
680
R217
0.1uF
R1
R2
Q200
NC
C227
CLK
COM
1
3
D
N
G
2
IN
OS
6
5
OUT
SHDN
7
D
D
V
4
10uF
FL200
MAX7414
8
C232
VMULT1
K4
VMULT2
K3
VMULT3
K1
VMULT4
J1
2
K
O
R
V
J10
WARP
XTAL1
K9
XTAL2
K10
TEST1
A9
A8
TEST2
G6
VBYPASS
P
C
V
2
A
D
D
V
4
D
7
K
1
D
D
V
0
1
C
2
D
D
V
0
1
A
3
D
D
V
NC3
F7
PREIN
D10
PVREF
B10
REFSEL
G5
SFBASE
G10
SFCAP
H10
SFIN
E10
SFOUT
G7
IADAPT
A4
INDMULT
K5
IOUT
A5
E1
LOCK
MODIN
H1
A6
MODOUT
NC1
G4
NC2
F10
A7
CPB2
DATA
F1
G1
EN_CEX
FREFOUT
K6
4
E
D
N
G
8
K
1
D
N
G
7
E
2
D
N
G
5
D
3
D
N
G
ADAPTSW
A3
AUX1
A1
AUX2
B1
AUX3
C1
D1
AUX4
CCOMP
D6
F4
CLK_CLK
D7
CPB1
V3A
U202
35U92
C242
0.1uF
R212
82
V5A
2.2uH
L208
C210
0.10uF
NC
1uH
L205
0.1uF
C241
V3A
0.10uF
C221
L201
0.1uF
C226
2.2uH
NC
R204
82K
R215
10K
C203
2.2uF
V5A
4700pF
C222
2.2uH
L204
C224
0.1uF
10K
R213
NC
C208
0.10uF
C202
0.10uF
NC
NC
NC
0.10uF
C233
0.10uF
C204
43K
0.10uF
NC
R205
NC
V3A
C215
C207
0.10uF
VCP
SCEN
CLK
CSX
R207
100
SSTD
SSCK
SSFS
DATA
LOCK
VCTRL
PRESC
AUX3
F168
V5A
V3A
Summary of Contents for ASTRO XTSTM 4000
Page 1: ...COLOR CHORDS 7 ASTRO XTSTM 4000 Portable Radio Detailed Service Manual ...
Page 2: ......
Page 16: ...May 28 2008 6871620L01 C xiv Commercial Warranty Notes ...
Page 22: ...May 28 2008 6871620L01 C 1 6 Introduction Notes ...
Page 26: ...May 28 2008 6871620L01 C 2 4 Radio Power Notes ...
Page 56: ...May 28 2008 6871620L01 C 3 30 Theory of Operation Notes ...
Page 100: ...May 28 2008 6871620L01 C 6 8 Troubleshooting Waveforms Notes ...
Page 194: ...May 28 2008 6871620L01 C B 2 Motorola Service Centers Notes ...
Page 204: ...May 28 2008 6871620L01 C Glossary 10 Glossary Notes ...
Page 209: ......