Codan 9360 Operating manual

HF SSB Transceiver
9323, 9360, 9390 and 9780
Technical Service Manual
No part of this handbook may be reproduced, transcribed, translated into any
language or transmitted in any form whatsoever without the prior written consent
of Codan Pty Ltd
1994 Codan Pty Ltd.
Codan part number 15-02051 Issue 4, August 1997

Head Office
Codan Pty Ltd
ACN 007 590 605
81 Graves Street
Newton
South Australia 5074
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Facsimile [phone]
Email
[e-mail]
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http://www.codan.com.au
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Codan Pty Ltd
Suite 11A
2 Hardy Street
South Perth
Western Australia 6151
Telephone [phone]
Facsimile [phone]
Codan (UK) Ltd
Gostrey House
Union Road
Farnham, Surrey GU9 7PT
United Kingdom
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Facsimile [phone]
Telex 858355

HF SSB Transceiver 9323/9360/9390/9780 Technical Service Manual i
Table of contents
Index
1 About this manual
Standards and icons..............................................................................................1-2
Definitions............................................................................................................1-3
Acronyms and abbreviations.......................................................................1-3
Glossary......................................................................................................1-6
Circuit reference designations.....................................................................1-6
Units............................................................................................................1-7
Unit multipliers...........................................................................................1-8
About this issue....................................................................................................1-9
Associated documents.................................................................................1-9
Other documents.........................................................................................1-9
2 General information
Overview..............................................................................................................2-1
Front and rear panel diagrams..............................................................................2-2
Specifications.......................................................................................................2-5
General specifications.................................................................................2-5
Receiver specifications ...............................................................................2-7
Transmitter specifications...........................................................................2-8
Connectors..........................................................................................................2-10
Microphone...............................................................................................2-10
Remote control..........................................................................................2-10
Antenna control.........................................................................................2-11
External alarm...........................................................................................2-12
RS232 .......................................................................................................2-12
Loudspeaker..............................................................................................2-12
Option GP, general purpose......................................................................2-13
Option M, morse.......................................................................................2-13

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ii HF SSB Transceiver 9323/9360/9390/9780 Technical Service Manual
Programming cable....................................................................................2-13
Cloning cable.............................................................................................2-14
Options................................................................................................................2-15
3 Brief description
General..................................................................................................................3-2
Control and switching...........................................................................................3-3
Synthesiser............................................................................................................3-4
Receive path..........................................................................................................3-5
Transmit path........................................................................................................3-6
4 Technical description
Control and supply voltages .................................................................................4-1
Power on......................................................................................................4-1
Power off.....................................................................................................4-2
Supply voltages ...........................................................................................4-2
Receive/Transmit switching........................................................................4-4
Receiver................................................................................................................4-5
Input low-pass filters...................................................................................4-5
High-pass filters ..........................................................................................4-5
RF amplifier ................................................................................................4-5
LPF and first mixer .....................................................................................4-6
45 MHz band-pass filter..............................................................................4-6
Second mixer...............................................................................................4-6
Noise limiter................................................................................................4-6
455 kHz filter and IF amplifier....................................................................4-7
Demodulator................................................................................................4-7
Automatic gain control................................................................................4-7
Voice mute ..................................................................................................4-9
Volume control and audio output amplifier..............................................4-10
Low voltage Tx inhibit..............................................................................4-10
Transmitter exciter..............................................................................................4-11
Microphone amplifier/compressor............................................................4-11

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HF SSB Transceiver 9323/9360/9390/9780 Technical Service Manual iii
Modulator..................................................................................................4-12
455 kHz filter and first mixer ...................................................................4-12
45 MHz band-pass filter ...........................................................................4-13
Second mixer and exciter output filter......................................................4-13
Tune..........................................................................................................4-13
Local oscillators .................................................................................................4-15
General......................................................................................................4-15
VCO1 and phase lock loop (04–02972) ...................................................4-15
VCO1 and phase lock loop (04-03135)....................................................4-16
VCO2 and phase lock loop (04-02972)....................................................4-17
VCO2 and phase lock loop (04-03135)....................................................4-18
455 kHz local oscillator for USB/LSB (04-02972) ..................................4-18
455 kHz local oscillator for USB/LSB (04-03135) ..................................4-19
Clarifier.....................................................................................................4-20
Microprocessor and peripherals—transceiver....................................................4-21
Microprocessor .........................................................................................4-21
I2C buses ...................................................................................................4-22
Synthesiser bus..........................................................................................4-23
PA serial bus.............................................................................................4-23
RS232 bus.................................................................................................4-23
Tone generation ........................................................................................4-23
A/D inputs.................................................................................................4-24
Antenna control.........................................................................................4-24
E2PROM write protect..............................................................................4-25
Microprocessor and peripherals—control panel ................................................4-26
Microprocessor .........................................................................................4-26
I2C buses ...................................................................................................4-26
Keypad......................................................................................................4-26
Select control ............................................................................................4-27
Volume control.........................................................................................4-27
Display......................................................................................................4-27
Microphone keypad ..................................................................................4-28
Data input/output ......................................................................................4-28
"S"+RF indicator......................................................................................4-29
Mute indicators.........................................................................................4-29

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iv HF SSB Transceiver 9323/9360/9390/9780 Technical Service Manual
Front panel back light................................................................................4-29
PA and filters......................................................................................................4-30
PTT and PA filter control..........................................................................4-30
Gain control stage......................................................................................4-30
Pre-driver stages........................................................................................4-30
Driver stage ...............................................................................................4-31
Output stage and bias regulator.................................................................4-31
Output filters .............................................................................................4-31
ALC control...............................................................................................4-32
Selective calling..................................................................................................4-34
Calibration.................................................................................................4-34
Selective calling ........................................................................................4-35
Emergency call (RFDS) and two-tone calling...........................................4-36
Emergency alarm (marine)........................................................................4-37
PA Exciter Interface............................................................................................4-38
Filter and PTT control...............................................................................4-38
Power On/Off............................................................................................4-38
Transmit Amplifier....................................................................................4-39
Receiver Path.............................................................................................4-39
Antenna Control........................................................................................4-39
PA assembly 4404.....................................................................................4-40
Options................................................................................................................4-41
Option AM ................................................................................................4-41
Option CW ................................................................................................4-41
Option F.....................................................................................................4-41
Option GP..................................................................................................4-42
Option M...................................................................................................4-42
Option PH..................................................................................................4-42
Option STE (9390 only)............................................................................4-43
Accessories.........................................................................................................4-44
RS232/I2C Interface ..................................................................................4-44

Table of contents
HF SSB Transceiver 9323/9360/9390/9780 Technical Service Manual v
5 Maintenance
General.................................................................................................................5-1
CMOS devices............................................................................................5-1
Circuit boards..............................................................................................5-2
Transmitter precautions ..............................................................................5-3
Probe precautions........................................................................................5-4
Surface mounted components.....................................................................5-4
Dismantling and assembling ................................................................................ 5-5
Top and bottom covers ...............................................................................5-5
Rx/Exciter PCB ..........................................................................................5-6
Microprocessor and Audio PCB.................................................................5-6
PA and Filter assembly...............................................................................5-6
Front panel..................................................................................................5-8
Control head................................................................................................5-9
Fault diagnosis....................................................................................................5-10
General......................................................................................................5-10
Voltage measurements..............................................................................5-11
No reception..............................................................................................5-12
No transmit ...............................................................................................5-13
Unlocked synthesiser................................................................................5-13
PA failure..................................................................................................5-14
Replacement of PA transistors..................................................................5-15
Control keypad..........................................................................................5-16
Displayed error messages..........................................................................5-16
6 Channel additions
Programming transmit frequencies TxD/TxE......................................................6-2
Tx/Rx programming procedure............................................................................6-3
Deleting a channel................................................................................................6-7
7 Adjustments
Introduction..........................................................................................................7-1
Test equipment required.......................................................................................7-2

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vi HF SSB Transceiver 9323/9360/9390/9780 Technical Service Manual
Voltage regulators.................................................................................................7-3
Crystal oven..........................................................................................................7-4
Test mode..............................................................................................................7-5
Accessing Test mode...................................................................................7-6
Test channels for 2.0 to 26.5 MHz PA assembly........................................7-7
Test channels for 2.25 to 30 MHz PA assembly (1.6 to 30 MHz
with Option LF fitted) .................................................................................7-8
VCO checks and adjustments.............................................................................7-10
VCO1 check..............................................................................................7-10
VCO2 check..............................................................................................7-10
VCO2 adjust..............................................................................................7-11
HPF/LPF filter alignment ...................................................................................7-12
HPF filter...................................................................................................7-12
LPF filter ...................................................................................................7-13
45 MHz filter alignment (08-04962) ..................................................................7-14
Alignment—method 1...............................................................................7-14
Alignment—method 2...............................................................................7-15
45 MHz filter alignment (08-05322) ..................................................................7-17
Alignment—method 1...............................................................................7-17
Alignment—method 2...............................................................................7-18
455 kHz IF and noise limiter alignment .............................................................7-19
Exciter output transformer balance.....................................................................7-20
Frequency adjustment.........................................................................................7-21
Frequency adjust USB...............................................................................7-21
Frequency adjust LSB ...............................................................................7-21
Mute adjustment .................................................................................................7-22
PA adjustments...................................................................................................7-23
Driver bias.................................................................................................7-23
PA bias ......................................................................................................7-23
Output power.............................................................................................7-24
Output power 27 MHz band (9323 only)..................................................7-25
Intermodulation.........................................................................................7-26
Receiver performance checks.............................................................................7-28

Table of contents
HF SSB Transceiver 9323/9360/9390/9780 Technical Service Manual vii
Sensitivity and (S+N)/N ratio ...................................................................7-28
AGC check................................................................................................7-28
Audio output.............................................................................................7-29
Selectivity (USB operation)......................................................................7-29
Clarifier operation.....................................................................................7-29
Noise limiter operation .............................................................................7-30
Transmitter performance checks........................................................................7-31
Frequency check .......................................................................................7-31
ALC ..........................................................................................................7-31
Power output and intermodulation............................................................7-31
Emergency call (9323 only)......................................................................7-32
8 Parts list
General information .............................................................................................8-1
Ordering information..................................................................................8-2
Component substitution..............................................................................8-2
Parts list ......................................................................................................8-2
9 Drawings
List of figures
Figure 2-1: Front panel of HF SSB Transceiver 9323...........................................................2-2
Figure 2-2: Extended control head (9330) of HF SSB Transceiver 9323..............................2-2
Figure 2-3: Front panel of HF SSB Transceiver 9360...........................................................2-2
Figure 2-4: Extended control head (9366) of HF SSB Transceiver 9360..............................2-3
Figure 2-5: Front panel and extended control head (9391) of HF SSB Transceiver 9390 ....2-3
Figure 2-6: Front panel of HF SSB Transceiver 9780...........................................................2-3
Figure 2-7: Extended control head (9782) of HF SSB Transceiver 9780..............................2-4
Figure 2-8: Rear panel of HF SSB Transceivers 9323, 9360, 9390 and 9780......................2-4
Figure 3-1: 9323, 9360, 9390 and 9780 PCB block diagram ................................................3-2
Figure 6-1: Microprocessor and Audio PCB extract .............................................................6-2
Figure 7-1: Link 1 position....................................................................................................7-6

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viii HF SSB Transceiver 9323/9360/9390/9780 Technical Service Manual
Figure 7-2: Ripple response..................................................................................................7-15
Figure 7-3: Circuit for test jig...............................................................................................7-17
Figure 7-4: Test setup...........................................................................................................7-26