9-10
Schematics, Board Overlays, and Parts Lists – UHF
: Transceiver (RF) Section
May 28, 2008
6871620L01-C
Figure 9-9. UHF Frequency Generation Unit (Synthesizer) Circuit – 1 of 3
V5A
2416307H01
L209
680nH
VSF_VCO
V3A
CLK
CSX
VSF
SCEN
DATA
V5A
V3A
R1
R2
Q200
4813973A42
V3A
3
AD5320BRT
U203
V3A
R218
10K
4
D
I
N
2
GND
5
SCLK
6
SYNC
VDD
1
VOUT
SSFS
SSTD
SSCK
3
I
N
2
6
OS
OUT
5
7
SHDN
4
VDD
MAX7414
FL200
CLK
8
1
COM
GND
C221
0
.
10uF
V3A
R216
8
.
2K
0
.
10uF
C215
VSF
C337
220pF
56K
R205
C220
10uF
R204
62K
NC
NC
NC
NC
NC
NC
NC
G6
F10
F7
D10
B10
G5
G10
H10
E10
H1
G4
D7
A7
F1
G1
D6
F4
NC
D5
E4
K8
E7
L208
2
.
2uH
C233
0
.
10uF
4
VCC
VCONT
1
GND
2
5
NC1
NC2
6
NC3
7
8
NC4
3
OUTPUT
16
.
8MHz
1XTV168000VAA
Y200
V3A
10K
R215
C235
100pF
33K
R208
C236
1000pF
.
01uF
C234
R201
33K
L202
2
.
2uH
V5A
XTAL2
VDD3
VMULT1
VMULT2
VMULT3
VMULT4
VRO
WARP
XTAL1
SFOUT
TEST1
TEST2
VBYPASS
VCP
VDD
VDD1
VDD2
NC2
NC3
PRE
I
N
PVREF
REFSEL
SFBASE
SFCAP
SF
I
N
GND3
I
ADAPT
I
NDMULT
I
OUT
LOCK
MOD
I
N
MODOUT
NC1
CPB1
CPB2
DATA
EN_CEX
FREFOUT
GND
GND1
GND2
ADAPTSW
AUX1
AUX2
AUX3
AUX4
CCOMP
CLK_CLK
35U92
U202
V5A
A10
K2
A2
D4
K7
C10
0
.
10uF
C211
V3A
2
.
2uH
L204
0
.
10uF
C210
C250
0
.
10uF
L203
2
.
2uH
V5A
V3A
NC
NC
K10
K4
K3
K1
J1
J10
K9
G7
A9
A8
A4
K5
A5
E1
A6
K6
A3
A1
B1
C1
D1
NC
NC
NC
NC
NC
NC
NC
8
.
2K
R220
R221
AUX2
6
.
8K
C207
0
.
10uF
10uF
C206
C200
100pF
VCP
0
.
10uF
C208
0
.
10uF
C205
0
.
10uF
C201
0
.
10uF
C202
K1
K2
K3
A1
A2
A3
A1
A2
A3
K1
K2
K3
3
2
1
4
5
6
D202
5
6
3
2
1
D201
4
V3A
L201
2
.
2uH
2
.
2uF
C203
C204
0
.
10uF
1
TP201
TEST_PO
I
NT
AUX3
VCTRL
C227
0
.
1uF
0
.
1uF
C224
0
.
1uF
C225
0
.
1uF
C226
0
.
1uF
C242
C241
0
.
1uF
C229
100pF
10K
R213
LOCK
F168
1K
R267
C222
4700pF
2000pF
C219
C218
.
033uF
.
047uF
C217
R217
332
R210
332
182
R212
L207
1uH
2
1
C231
.
01uF
10uF
C232
VSF
C230
100pF
R202
2K
2
LMH6723
U201
4
3
1
5
C209
0
.
10uF
L205
1uH
100
R207
C214
100pF
C213
1000pF
PRESC
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: ......