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Codan 2110 series Repair Guide
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Brief descriptio
n
Ma
np
a
c
k
T
r
anscei
v
er 2
1
10
serie
s
Re
p
a
ir
Guide
21
General information
The transceiver uses double conversion in bot
h the Receive and T
r
ansmit modes. The
455
kHz sideband filter
, the 45
MHz BPF
,
th
e mixers MIX
1
and MIX
2
, and the local
oscillators VCO an
d REF OSC, are
common to both modes of operation.
NOTE
The information in this section shoul
d be read in conjunction with the
block diagram (Codan part number
03-01256
).
36
38
Table of Contents
Table of Contents
3
Index
11
Introduction
15
Overview of this Guide
15
How to Use this Guide
16
Board Replacement Philosophy
16
Disposal
16
Circuit Board Precautions
17
Transmitter Precautions
18
Probe Precautions
18
Contact Information
19
Ordering Information
21
Overview
23
General
24
Figure 1: the 2110 Series Manpack Transceiver
24
Connectors
25
Front Panel
25
Figure 3: Front View of the Handset Connector
26
Table 1: Pinouts of the Handset Connector
26
Figure 5: Front View of the 19-Way GPIO Connector (2110 Only)
28
Table 3: Pinouts of the 19-Way GPIO Connector (2110 Only)
28
Back Panel
30
Figure 7: Back Panel of the Transceiver Unit
30
Battery Pack
32
Figure 9: Front View of the Battery Pack
32
Figure 10: Front View of the Battery Connector on the Battery Pack
32
Table 6: Pinouts of the Battery Connector on the Battery Pack
32
Brief Description
34
General Information
37
Transmit Path
38
Front Panel PCB
38
Audio & Control PCB
38
RF/IF & Synthesiser PCB
39
PA & Filter PCB
39
Receive Path
39
Antenna Tuner PCB
39
Audio & Control PCB
39
Antenna Tuning Process
40
Synthesiser Operation
40
Control and Switching
40
Interconnection Diagrams and Listed Spares Drawings
41
Table 7: List of Drawings
41
Figure 2: Front Panel of the Transceiver (2110 Model Shown)
43
Figure 4: Front View of the External GPS Antenna Connector (2110 Only)
45
Figure 6: Front View of the 5-Way Connector (2110V Only)
47
Figure 8: Front View of the Battery Connector on the Transceiver Unit
49
Figure 11: RF/IF & Synthesiser PCB (08-06039-001)
62
Figure 12: PA & Filter PCB (08-06064-001)
62
Figure 13: Audio & Control PCB (08-06128-001)
64
Figure 14: Antenna Tuner PCB (08-06063-001)
64
Figure 15: Front Panel PCB (08-06129-001)
64
Table 8: Test Points for the RF/IF & Synthesiser PCB (08-06039-001)
66
PA & Filter PCB
69
Table 9: Test Points for the PA & Filter PCB (08-06064-001)
70
Audio & Control PCB
72
Table 10: Test Points for the Audio & Control PCB (08-06128-001)
74
Antenna Tuner PCB
76
Front Panel Assembly
78
Front Panel PCB
80
Repair Procedures, Tests, and Adjustments
83
Test Equipment
84
Figure 16: Setup for Artificial Antenna
85
Figure 17: Setup for RF Sampler
85
Table 13: Test Equipment
85
Setup of Test Equipment for 2110
86
Figure 18: Setup for 2110
86
Repair Procedures and Fault Diagnosis
87
General
87
Figure 19: Balance Control on the 0208
89
Mechanical Inspection
90
Operational Tests
91
Table 15: Default Settings for the Transceiver During Testing
92
Receive Tests
95
Transmit Tests
100
Table 16: 20/25 W Output Power Scale
103
Table 17: 4/5 W Output Power Scale
104
Figure 20: Acceptable Two-Tone RF Envelope
105
Figure 21: Defective Two-Tone RF Envelope (Typical Overbias of PA)
105
Figure 22: Defective Two-Tone RF Envelope (Typical Underbias of PA)
106
Figure 23: Defective Two-Tone RF Envelope (Typical Spurious-Related Problems)
106
Figure 24: Intermodulation Measurements Using a Spectrum Analyser
107
Disassembling the Transceiver
109
Figure 25: Removing the Housing from the Chassis
109
Adjustments
111
Adjusting Frequency
111
Adjusting the PA
111
Re-Assembling the Transceiver
115
Figure 26: Setup for Vacuum Test
116
Checking the Battery Charging Process
118
Figure 27: Typical Front Panel of a Battery Charger
119
Replacing Battery Cells
122
Figure 28: Connections between the Battery Cells and the Battery Monitor PCB
122
Replacing the Fuse in the Battery Pack
123
Flowcharts
125
Figure 29: Repair Flowchart
127
Figure 30: Disassembly Flowchart
129
Figure 31: Power on Fault Diagnosis Flowchart
131
Figure 32: Receive Fault Diagnosis Flowchart 1
133
Figure 33: Receive Fault Diagnosis Flowchart 2
135
Figure 34: Transmit Fault Diagnosis Flowchart 1
137
Figure 35: Transmit Fault Diagnosis Flowchart 2
139
Test Sheet for the 2110 Series Manpack Transceiver
141
Figure 36: GPS Receiver
147
Figure 37: Connector for External GPS Antenna
148
Table 20: Front Panel Assembly and Final Assembly with GPS Connector
148
Figure 38: Voice Encryptor
149
Figure 39: Filters
149
Standards and Icons
151
Definitions
152
Acronyms and Abbreviations
152
Glossary
154
Circuit Reference Designations
155
Units
156
Unit Multipliers
156
About this Issue
157
Specifications
159
General
159
Table 21: General Specifications
159
Receiver
161
Table 22: Receiver Specifications at 50 Antenna Connector
161
Transmitter
162
Antenna Tuner
163
GPS Connector
163
Other manuals for Codan 2110 series
Reference Manual
521 pages
Getting Started Guide
101 pages
4
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Codan 2110 series Specifications
General
Brand
Codan
Model
2110 series
Category
Transceiver
Language
English
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