Figure 9-39. Uhf (403-470 Mhz) Receiver Back End Schematic Diagram - Motorola HT Series Detailed Service Manual

UHF Band 1 Circuit Board/Schematic Diagrams and Parts List (PCB 8480450Z14)
FL301
XTAL
C323
L311
150pF
750nH
6 OUT 3
IN
IF
C324
20pF
L331
2.20uH
Vdd_FILTERED
C382
10uF
(SOURCE)
C344
0.1uF
C329
0.1uF
C342
1uF
C341
1uF
C340
1uF
C339
1uF
C356
Vdd_FILTERED .022uF
C337
L314
100pF
2.2uH
C336
0.1uF R5
R314
3K
R313 C328
C326
0.1uF
.01uF 330
C327
R311
100pF
C330
30K
10pF
R312
C325
R351
Q302
2.4K
.01uF
0
R352
3.3K L330
R315
680nH
12K
R343
10
Vdda
C348
C347 C346
0.1uF
0.1uF 0.1uF
C343
0.22uF
C357
0.22uF
C358
1200pF
37
C359
C4P
38
C3P 0.1uF
MLPD_CR
39 24
C334
C2P
40 BRP_OFF 23
.022uF
C1P
BROWN_VCC
41 22
GREEN_VCC FREF
42 21
MIX_BYP
GND
43 20
U301
LVZIF_SEL
GREEN_VSS CEX
44 19
32D83
BLUE_VSS CLK
45 18
BLUE_VCC DATA
46 17
MIX_IN TESTA
47 16
PREAMP_OUT IOUT
48 15
PRE_AGC GOLD_VSS
14
COL
13
C355
0.33uF
C338
15pF
RSSI
C360
DA
.022uF
SH323
SHIELD
C361
.01uF
1
CRYSTAL FILTER SHEILD
DEMOD
R350
C345
100K
0.1uF
C390
100pF
DB
R344
12K
C383
Q320
100pF
BFQ67W
C352
Vdd_FILTERED
12pF
2
C349
C351
.022uF
20pF
16.8MHz
C350
330pF
CLK
DATA
C362
.022uF
C363
2.2uF
SH321 SH322
SHIELD SHIELD
1 1
LVZIF TOP SHIELD LVZIF BTM SHEILD

Figure 9-39. UHF (403-470 MHz) Receiver Back End Schematic Diagram

9-51
R355 R345
10K
0
C384
3
56pF
1
C353
R346
43pF
56K
C385
L332
C354
56pF
R324 100nH
47pF
2K
L325
2.20uH
R320
CR310
1K
R321 C364 R322
2.4K .01uF
200K
M301
ZMY0130014-E