UHF2 PCB and Schematic Diagrams
3-55
TESTD
VAG
VAG_REF
VPP
RED_VCC
RED_VSS
ROSE_VCC
ROSE_VSS
RSSI_FLT
RSSI_OUT
TESTA
IOUT
LIM
MIX_BYP
MIX_IN
MLPD_CR
PHASE_LOCK
PREAMP_OUT
PRE_AGC
PRE_IN
EMIT
EXTBS
FREF
GND
GOLD_VCC
GOLD_VSS
GREEN_VCC
GREEN_VSS
C4M
C4P
CEX
CLK
COL
DATA
DEMOD_HF
DEMOD_OUT
BROWN_VCC
BRP_OFF
C1M
C1P
C2M
C2P
C3M
C3P
AFC
BASE
BLUE_VCC
BLUE_VSS
U301
32D83
16
15
24
21
20
14
19
18
13
17
22
23
32
25
30
29
31
26
36
28
27
33
34
35
42
46
47
48
41
43
37
40
39
38
45
44
8
9
3
1
2
5
4
11
6
10
7
12
0.1uF
C336
C356
.022uF
L314
2.2uH
C341
1uF
C339
1uF
C337
100pF
C340
1uF
1uF
C342
Vdd_FILTERED
R5
C355
0.33uF
100pF
C327
C328
0.1uF
2.4K
R312
C338
C330
15pF
10pF
R314
330
3K
R313
30K
R311
C326
.01uF
Q302
R351
0
3.3K
R352
12K
R315
680nH
L330
.01uF
C325
C323
150pF
20pF
C324
750nH
L311
GND2
4
GND3
5
OUT
3
IN
6
TBD
XTAL
FL301
GND
1
GND1
2
IF
10uF
C382
C348
0.1uF
0.1uF
C329
2.20uH
L331
R343
10
0.1uF
C344
Vdd_FILTERED
(SOURCE)
C343
0.22uF
0.1uF
C347
0.1uF
C346
Vdda
.022uF
C334
DB
0.1uF
C359
1200pF
C358
R344
12K
C383
100pF
0.22uF
C357
16.8MHz
Vdd_FILTERED
CLK
DATA
LVZIF_SEL
C350
330pF
C349
.022uF
2K
R324
C351
20pF
BFQ67W
Q320
1
3
2
12pF
C352
0
R355
43pF
C353
C362
.022uF
56pF
100nH
L332
C385
.01uF
C364
CR310
R320
1K
R321
2.4K
C363
2.2uF
2.20uH
L325
R346
56K
200K
R322
C354
47pF
100pF
C390
100K
R350
0.1uF
C345
DEMOD
DA
C361
10nF
C360
.022uF
RSSI
SH322
SHIELD
1
SH323
SHIELD
1
SH321
SHIELD
1
CRYSTAL FILTER SHIELD
LVZIF TOP SHIELD
LVZIF BTM SHIELD
C384
56pF
10K
R345
0.706V
2.683V
3.185V
2.628V
2.095V
UHF2 Receiver Back End Schematic Diagram
8485641Z02
Summary of Contents for GP-688
Page 5: ...Compact Professional Portable Radios Service Maintainability Issue July 2007 ...
Page 14: ...x THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 24: ...2 6 MAINTENANCE THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 32: ...3 8 SERVICE AIDS THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 34: ...4 2 POWER UP SELF TEST THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 38: ...iv THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 52: ...2 10 TROUBLESHOOTING CHARTS THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 64: ...3 12 CONTROLLER KEYPAD SCHEMATICS ...
Page 112: ...3 60 PCB and Schematic Drawings IP67 THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 116: ...3 64 PCB and Schematic Drawings IP67 THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 120: ...3 68 PCB and Schematic Drawings IP67 THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 147: ...Compact Professional Portable Radios VHF 136 174MHz Service Information Issue July 2007 ...
Page 150: ...iv ...
Page 172: ...2 10 TROUBLESHOOTING CHARTS THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 176: ...3 4 THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 192: ...3 20 VHF PCB Schematic Diagrams THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 240: ...iv THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 258: ...2 8 TROUBLESHOOTING CHARTS THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 284: ...3 26 UHF1 PCB and Scematics Diagrams THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 288: ...3 30 UHF1 PCB and Scematics Diagrams THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 302: ...3 44 UHF1 PCB and Schematic Diagrams THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 312: ...3 54 UHF1 PCB and Schematic Diagrams THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 318: ...3 60 UHF1 PCB and Schematic Diagrams THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 335: ...Compact Professional Portable Radios UHF2 450 527MHz Service Information Issue July 2007 ...
Page 338: ...iv THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 348: ...1 10 THEORY OF OPERATION THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 356: ...2 8 TROUBLESHOOTING CHARTS THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 360: ...3 4 UHF2 PCB SCHEMATICS PARTS LISTS THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 374: ...3 18 UHF2 PCB and Schematic Diagrams THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 378: ...3 22 UHF2 PCB and Schematic Diagrams THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 388: ...3 32 UHF2 PCB and Schematic Diagrams EPP THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 402: ...3 46 UHF2 PCB and Schemtaic Diagrams THIS PAGE INTENTIONALLY LEFT BLANK ...