Motorola pro7100 Manuel de service Page 100
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Noté. / 5. Basé sur avis des utilisateurs
4-34
C3035
20pF
D3001
1
2
3
IO3
IO4
5.1pF
C3033
D3031
IO1
IO2
FECNTL_1_VHF_FE_1VLTG
RXIN_VHF_FE_1
1
2
9V3_VHF_FE_1
XFMRXFMR
T3001
4
6
3
R3035
4
6
3
1
2
NU
0
XFMR
T3002
L3034
R3031
NU
33nH
51
560
R3021
C3003
.0033uF
SP_2_3
C3021
9V3
120pF
1K
R3012
C3001
C3013
4.7pF
56pF
D3004
12
3
SP_3_2
SP_3_1
82pF
C3034
NU
18pF
C3031
SP_1_3
0
R3033
K9V1__VHF_FE_1
C3002
RXIN
9.1pF
56pF
C3004
.0033uF
C3011
R3003
SP_2_1
1K
SP_1_2
SP_1_1
.001uF
C3012
C3022
R3013
.01uF
3.3K
Q3002
R3004
1.5K
.001uF
C3008
SP_4_1
SP_4_3
10
NU
R3030
4.7K
R3011
C3009
R3005
330pF
NU
10K
330pF
C3010
390
R3008
R3007
12
390
R3006
470nH
L3002
C3005
820
NU
100pF
R3034
SP_2_2
SP_4_2
R3009
SP_3_3
100K
10
R3015
IF_VHF_FE_1
C3014
7.5pF
560
R3002
C3007
.0033uF
.001uF
C3019
150nH
L3032
56pF
C3006
Q3001
820
NU
R3032
R3036
NU
1K
51
R3014
D3003
100K
R3001
.001uF
C3020
C3016
R3010
100pF
30
680
R3018
43pF
C3017
100
100
R3017
R3016
R3000
1.5K
C3018
K9V1
1
2
3
NU
4.7pF
FECNTL_1
D3000
9V3_VHF_FE_2
IF
RXINJ
C3032
.0033uF
NU
13pF
C3000
C3024C3023
NU
3300pF
NU
330pF
47K
R3019
RXINJ_VHF_FE_1
56pF
C3015
NC_D3000_1
C3025
2.7pF
NU
150nH
NU
L3025
In case of interference caused by
strong offchannel inband carriers,
remove R3018 . This will improve
intermodulation performance, but will
decrease specified RX sensitivity.
For critical basestation applications
remove R3018, R3016, R3017. This
will further improve intermodulation
performance but will further decrease
specified RX sensitivity.
Note1:
3,6VDC
3,0 -7,5VDC
L3031
560nH
Figure 4-20. VHF (136-174MHz) Receiver Front End Schematic Diagram
- Professional Radio 1
- Computer Software Copyrights 2
- SAFETY INFORMATION 3
- W A R N I N G 4
- C a u t i o n 4
- Safety-3 5
- Safety-4 6
- Relabeling 6
- TABLE OF CONTENTS 7
- Chapter 3 Maintenance 9
- List of Figures 9
- List of Tables 10
- Chapter 1 11
- Introduction 11
- 1.3 Related Documents 12
- 1.4 Technical Support 12
- 1.5 Warranty and Repairs 12
- 1.7 Radio Model Information 14
- Chapter 2 15
- Theory of Operation 15
- 2-2 Theory of Operation 16
- 2.2.2 Automatic On/Off 17
- 2.2.3 Emergency 18
- 2.2.4 Mechanical On/Off 18
- 2.2.5 Ignition 18
- Theory of Operation 2-5 19
- 2.2.8 SBEP Serial Interface 20
- Theory of Operation 2-7 21
- 2-8 Theory of Operation 22
- 2.3.2 Transmit Audio Circuits 23
- 2.3.3 Microphone Input Path 23
- 2-10 Theory of Operation 24
- Theory of Operation 2-11 25
- 2.3.4.2 High Speed Data 26
- 2.3.5 Receive Audio Circuits 27
- 2.3.5.1 Squelch Detect 27
- 2-14 Theory of Operation 28
- 2.3.5.4 Handset Audio 29
- ASFIC_CMP 30
- 2.3.6.3 Voice Storage Option 31
- Theory of Operation 2-19 33
- 2.5.1 Power Controlled Stage 34
- 2.5.2 Pre-Driver Stage 34
- Theory of Operation 2-21 35
- 2.6 Frequency Synthesis 36
- Theory of Operation 2-23 37
- 2-24 Theory of Operation 38
- 2.6.4 Synthesizer Operation 39
- Theory of Operation 2-27 41
- 2.8.1 Power Controlled Stage 42
- 2.8.2 Pre-Driver Stage 42
- 2.8.3 Driver Stage 43
- 2.8.4 Final Stage 43
- 2.8.5 Directional Coupler 43
- 2.8.6 Antenna Switch 43
- 2.8.7 Harmonic Filter 43
- 2.9 Frequency Synthesis 44
- Theory of Operation 2-31 45
- 2.9.4 Synthesizer Operation 47
- 2.10.1 Power Supplies 48
- 2.10.2 Power On/Off 48
- 2.10.3 Microprocessor Circuit 48
- 2.10.4 SBEP Serial Interface 49
- 2.10.5 Keypad Keys 49
- 2.10.8 Speaker 50
- 2.11.1 Power Supplies 51
- 2.11.2 Power On / Off 51
- 2.11.3 Microprocessor Circuit 51
- 2.11.4 SBEP Serial Interface 52
- 2.11.5 Keypad Keys 52
- Theory of Operation 2-39 53
- 2.11.9 Speaker 54
- Chapter 3 55
- Maintenance 55
- Maintenance 3-3 57
- 3-4 Maintenance 58
- Table 3-1 59
- 60
- Maintenance 3-7 61
- 3-8 Maintenance 62
- Mobile Synthesizer Section 63
- 3-10 Maintenance 64
- 3.9 VCO Troubleshooting Chart 65
- 3-12 Maintenance 66
- Chapter 4 67
- 6-LAYER CIRCUIT 68
- COPPER STEPS IN PROPER 68
- LAYER SEQUENCE 68
- BOARD DETAIL VIEWING 68
- ZWG0130113 70
- ZWG0130239 71
- ZWG0130240 72
- ZWG0130136 75
- ZWG0130137 76
- ZWG0130241 77
- ZWG0130242 78
- BACKLIGHT GREEN 79
- U0971 Display Driver 80
- ZWG0130229-A 84
- ZWG0130230 A 85
- ASFIC CMP 86
- ZWG0130231-A 86
- ZWG0130232-A 87
- ZWG0130272 91
- ZWG0130270 92
- ZWG0130271 93
- ZWG0130227P 99
- 3,0 -7,5VDC 100
- (SOURCE) 102
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