3-44
VHF PCB and Schematics Diagram
G
G
G
G
G
G
G
G
G
G
G
G
G
.022uF
C3827
.022uF
SHIELD
SH3802
SHIELD
1
47nH
TX_INJ
47nH
L3822
VCO_MOD
C3805
4.7pF
4.7pF
4.7pF
4.7pF
SHIELD
1
C3801
SHIELD
SH3801
0
R3829
TX_INJ_1_VCO
0
BIAS_ADJ_1_VCO
15pF
C3825
15pF
1000pF
C3822
1000pF
62pF
C3809
15pF
220
15pF
C3836
220
R3803
C3812
0.1uF
0.1uF
100pF
C3806
100pF
47
R3822
47
D3831
NU
1K
1K
R3807
RX_INJ_1_VCO
10K
10K
56pF
56pF
R3836
R3823
C3824
33K
33K
4.7pF
C3826
4.7pF
C3833
4.7pF
4.7pF
C3823
.01uF
220
.01uF
R3821
220
VCTRL
NU
0
R3830
0
RX_INJ
NU
100K
100K
R3812
220
R3801
220
NU
47
R3834
47
6.8pF
C3835
6.8pF
R5_1_VCO
22pF
C3802
22pF
NU
L3824
1uH
47K
1uH
R3835
47K
R3816
1K
1K
1uH
L3826
1uH
C3808
15pF
15pF
47nH
47nH
VSF
L3823
100
100
R3828
1000pF
C3803
1000pF
10pF
NU
VSF
10pF
C3810
Vdda
.022uF
C3818
.022uF
12K
R3832
12K
R5
56nH
L3833
56nH
100nH
100nH
100
100
L3816
1000pF
R3802
C3842
1000pF
D3821
C3834
56pF
56pF
100nH
100nH
L3801
C3815
1000pF
1000pF
22
Q3801
22
R3806
68pF
C3830
68pF
100nH
100nH
L3825
R3818
0
NU
0
0
T5
R3817
0
R3831
10K
10K
100nH
100nH
0.1uF
PRESC
L3811
C3804
0.1uF
56nH
L3831
56nH
10K
R3804
10K
1
TX_IADJ
10
TX_OUT
13
TX_SWITCH
4
1
S
R
E
F
F
U
B
_
C
C
V
8
1
CI
G
O
L
_
C
C
V
6
RX_EMITTER
2
RX_IADJ
8
RX_OUT
7
RX_SWITCH
3
SUPER_FLTR
TRB_IN
19
16
TX_BASE
15
TX_EMITTER
4
COLL_RFIN
20
FLIP_IN
1
1
S
R
E
F
F
U
B
_
D
N
G
9
G
A
L
F
_
D
N
G
CI
G
O
L
_
D
N
G
7
1
12
PRESC_OUT
5
RX_BASE
U3801
50U5
4
50U54
10
10
R3808
1000pF
0.1uF
1000pF
C3832
.01uF
C3829
24K
R3805
24K
.01uF
C3821
.01uF
L3821
56nH
1uH
56nH
68nH
1uH
L3813
TRB
68nH
L3832
D3832
C3811
0.1uF
L3812
100nH
0.1uF
C3828
100nH
.01uF
0.1uF
TRB_1_VCO
R3826
18
18
33
R3825
33
220
C3816
R3833
220
6.8pF
6.8pF
BIAS_ADJ
VCO_MOD_1_VCO
100
R3811
100
22K
R3824
22K
27nH
PRESC_1_VCO
27nH
L3809
C3813
.01uF
.01uF
1uH
L3834
1uH
VSF
VHF (136-174MHz) Voltage Controlled Oscillator Schematic Diagram
8471021L01
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 ...