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Manuals
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Ericsson Manuals
Transceiver
C605 Maxicom
Service manual
Ericsson C605 Maxicom Service Manual
470 mhz mobile radio station
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
1 Introduction
General
2 Technical Data
Transmitter
Regulator
Cipher
3 Installation
General
Divided Installation
Installation of the Control Unit
Installation of Radio and Cipher
Installation of Handset with Holder
Installation of Loudspeaker
DC Power Connection
External Alarm Relay
Antenna Installation
Fig 3.7. the Connection of the Loudspeaker to the
Fig 3.8. the Connection of the Station to the Car's Battery
4 Operating Instructions
Controls and Indicators
Fig 4.1. the Station Consists of a Control Unit, Radio
Fig 4.2. the Control Unit and the Code Memory Plug in Board
Fig 4.3. the Handset and Its Holder with Controls and
Button Set
Display
Fig 4.4. the Button Set Includes Number Buttons for
Fig 4.5. the Stations Display with Channel Indicator
Incoming Calls
Outgoing Calls
Other Functions
Who Has Called
Status Reporting
Accessories
5 Circuit Description of Radio Parts
Regulator
Reciver
RF Section and First if Section
Second if Section
Squelch and AF Sections
Duplex Transmitter
Generation on the Carrier
Controlling the VCO
Power Amplification
Frequency Generator
Generation of the Carrier
Generation of the Voltage
Fig 5.2 Control Voltage at TPI When Cpa> Cpb
Acquisition Sequence
Fig 5.3 Control Voltage at TPI When VCO Is Locked
Control Sweep When the VCO Is Locked on
Divisior and Control Voltage
Fig 5.5 Control Voltage at TPI When VCO Is Locked
Fig 5.6 Control Sweep When the VCO Locked in
Fig 5.7 Control Sweep When the VCO Locked Inre
Table 5.1. Divisors and Control Voltage
6 Description of the Logic Parts
General
Block Diagram Description of the Micro Computer
General Program Description of the 100 Channel Standard Program
7 Description of the Cipher Circuits
General
Mechanical Design
Transmission of Plain Text
Transmission of Enciphered Message
Fig 7 .1. the Ciphering Unit
8 Checking and Adjusting
General
Test Equipment
Test Set up
Fig 8.1 Removing the Logic Unit from the Radio Unit
Radio Unit
Checking the Regulator
Fig 8.3 Regulator's Testpoints
Checking and Adjusting the 1 Band Receiver
Checking and Adjusting the Duplex Transmitter
9 Trouble Shooting
Trouble Shooting on Unit Level
Central Service
The Connection Unit
10 Spare Parts
Duplex Transmitter
Band Receiver
Frequency Generator
Regulator
Logic Board
Control Board
PROM Board
Display Board
Bridgin Board
Interconnection Unit for Cipher
Connection Unit
Interconnection Unit
Interface Board
Complete Units
Antenna Filter Board
Fig 11.8. Connector Board for Loudspeaker and Hand
Component Layout
Connector Board for Loudspeaker and Handset
Fig 11.9. Connector Board for Loudspeaker and Hand
Circuit Diagram
Fig 11.10. Connector Board for Radio and Logic Boards
Fig 11.11. Connector Board for Radio and Logic Boards
Diagram
Fig 11.19. Cipher Board 2, Circuit Diagram
Fig 11.20. Interface Board for Data Communication, Com
Layout
Fig 11.34. Basic Logic, Component Layout
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ERICSSON
;i5
Service manual
470 MHz Mobile radio station
C605 Maxicom
Standard version for cipher,
duplex and data communication
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