Uhf Receiver Back End Schematic Diagram - Motorola GP88s Service Manual

-42
9A
FL301
XTAL
TBD
C323
L311
150pF
750nH
6 3
IF
IN OUT
C324 R352
20pF 3.3K

UHF Receiver Back End Schematic Diagram

R343
L331
10
2.20uH
Vdd_FILTERED
C382
(SOURCE)
10uF
C348
C344
0.1uF
C329
0.1uF
C342
1uF
C341
1uF
C340
1uF
C339
1uF
C356
.022uF
Vdd_FILTERED
C337
L314
100pF
2.2uH
C336
C355
0.1uF
R5
0.33uF
R314
3K
C326
R313 C328
.01uF 330 0.1uF
C327
R311 100pF
30K C330
10pF
R312
C325
R351
5.6K
Q302
.01uF
0
L330
R315
680nH
12K
Vdda
C347
C346
0.1uF 0.1uF
0.1uF
C343
0.22uF
C357
0.22uF
C358
1200pF
37
C4P
C359
38
0.1uF
C3P
MLPD_CR
39 24
C334
C2P
BRP_OFF
40 23
.022uF
C1P
BROWN_VCC
41 22
GREEN_VCC
FREF
42 21
MIX_BYP
GND
43 20
U301 LVZIF_SEL
GREEN_VSS
CEX
44 32D83 19
CLK
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
C338
15pF
RSSI
DA
C360
.022uF
SH323
SHIELD
C361
.01uF
1
if
CRYSTAL FILTER SHEILD
DEMOD
R350
C345
100K
0.1uF
C390
100pF
DB
R344
12K
R355
0
C383
100pF
3
Q320
BFQ67W
C352
Vdd_FILTERED
12pF
2
C349
C351
.022uF
20pF
16.8MHz
R324
C350
2K
330pF
DATA
C362
.022uF
C363
2.2uF
SH321 SH322
SHIELD SHIELD
1 1 if
if
LVZIF BOTTOM SHIELD
LVZIF TOP SHIELD
Circuit Board/Schematic Diagrams and Parts List
R345
10K
C384
56pF
1
C353
43pF R346
56K
C385
L332
56pF
C354 100nH
47pF
L325
2.20uH
R320
CR310
1K
R321 C364
R322
.01uF
2.4K 200K
ZMY0130314-D