Manuals
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EFJohnson
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Communications
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Two-Way Radio
EFJohnson
7780
service manual
Models:
7780
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116 pages
9.93 Kb
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Specs
Install
Parts list
Transceiver Block Diagram
DTMF/ANI Signaling
Defaults
Penalty Timer
Low-Battery Indicator Amber
Replacement Parts
Accessories
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Contents
7780
Page
Page
Table of Contents
Table of Contents CONT’D
List of Figures
List of Tables
Scope of Manual Equipment Description
General Information
Transceiver Identification
Accessories
Factory Customer Service
Part Number Breakdown
Factory Returns
Accessories
Accessory
Toll-Free 800
Internet Home Intrinsically Safe Information
Replacement Parts
Definitions
Classification of Hazardous Areas and Atmospheres
Temperature Code T3C
Possible Ignition Sources
Intrinsically Safe and Nonincendive Ratings
Area Classification
Accessing PC Boards
Material Classification
Typical Hazard Group Class
Removing Logic Unit
Removing RF Unit
General
Specifications
Transceiver Operation
Features
Controls and Display
Low-Battery Indicator Amber
TX Indicator Red Indicates when the transmitter is keyed
Front Panel Keys Full Keypad Model
Display
Display
Backlight
Turning Power on and Setting Volume
Option Switches
General Operation
Function Conv
Option Switch Functions
See
Scanning
Tone ENABLE/DISABLE
Conventional and SMARTNET/ Smartzone Operation
Display Mode Selection
Conventional Features
Monitoring Before Transmitting
Busy Channel Lockout
Monitor Mode
Call Guard Squelch
Conventional Mode Scanning
Penalty Timer
Conversation Timer
Power Output Select
Priority Channel Sampling
Standard Conventional Calls
DTMF/ANI Signaling
Enhanced Private Conversation Calls
SMARTNET/SMARTZONE Features
Viewing Unit ID
Standard Group Calls
Transceiver Operation
Private Conversation II Calls
Telephone Calls
Call Alert
Messaging
Emergency Alarm and Call
Sending Status Conditions
SMARTNET/SMARTZONE Scanning
Failsoft Operation
Dynamic Regrouping
Supervisory Tones
Menu Description
Keypad Programming
Zone Change Parameter
System Parameters
Channel Change Parameter
Channel Parameters
Computer Description
Programming Setup
Pctrunk Software Installation
Transceiver Programming
Help Files
Connecting RPI to Computer and Transceiver
Starting and Exiting
Programming File Types
Creating and Displaying Systems
Screen Pop-Up Buttons and File Size Indicator
Programming Procedure
File Size Indication
Menu Bar
Menu Commands
Window Menu
Radio Type Menu
Download Menu Upload Menu
Systems Menu
Zones
Defaults
RADIO-WIDE Parameter Screens
Band
Assign Function Buttons
Radio Wide Scan List
Radio-Wide Scan List Screen
Modify List Screen
Hot Dtmf
RADIO-WIDE Conventional Screen
RADIO-WIDE SMARTNET/SMARTZONE Screen
Full Spectrum CC Scan
Conventional System General Screen
Adjustable Parameters
RADIO-WIDE Portable Options Screen
Programming Conventional Systems and Channels
Scan List Button
Timers
Conventional System Modify Scan List Screen
Keypad Editing
Setting UP Conventional Channels
Scan Timers
Priority Channel Selection
Selected Channel
Conventional Channel Screen Parameters
Tx Time-Out
Transmit Power
Signaling
Channel Type
Splinter Channels
Restricted Access
Time-Out Timer
ISW Delay Time
Private Call
SMARTNET/SMARTZONE System Other ID’S Screen
SMARTNET/SMARTZONE System Phone Interconnect Screen
Phone Interconnect
Failsoft Channel
SMARTNET/SMARTZONE System Emergency Settings Screen
Emergency Alarm
SMARTNET/SMARTZONE System Talk Groups Screen
Trunking Phone List Screen
SMARTNET/SMARTZONE System Lists Screens
Message Aliasing Screen
Control Channels Screen
Announcement Groups Screen
Trunking Call List Screen
Status Aliasing Screen
Setting UP SMARTNET/SMART- Zone Channels
SMARTNET/SMARTZONE Channel Screen Parameters
Other Screen Parameters
SMARTNET/SmartZone Channel Screen
Recommended Tone Call Guard Codes Freq
Call Guard CTCSS/DCS Codes and Tones
MHz Channels
MHz Channels
MHz Channels
MHz Channels
MHz Channels
MHz Channels
Synthesizer Description
Power Switching and Regulation
Power Switching
Circuit Description
Synthesizer Chip IC1
VCO and Tcxo Modulation
Charge Pump Q1, Q2, Loop Filter
RF Amplifier Q1, First Mixer Q2
Receiver Circuit Description
If Amplifier Q2, LIMITER/DETECTOR IC3
Amplifier Q9, Driver Q8
Antenna Switch and LOW-PASS Filter
Squelch Circuit IC4A/B, IC5A
Transmitter Description
Receive Audio Processing
Control Logic and Display
Pin Port Name Input or Description Active High Output
Microprocessor IC306 Pin Descriptions
Hvfulswlrq
Receive and Transmit Data Processing
Audio Amplifier IC104-IC106
Receive Data FILTER/DETECTOR IC102A/B, IC107A/B
Transmit Audio Processing
Transmit Data Filter IC206B/ IC206A
Smartnet Data Processing
LOW-PASS Filter IC205A/B
Function Fahrenheit Celsius
Battery Pack and Charger Information
Battery Pack
Power Setting Operating Time
Battery Pack and Charger Information
Test Setup
Alignment Procedure and Performance Tests
Mm/3/32 Mm/1/8 Phone Jack
Tune Software Hqhudo
Main Pctune Screen
Preliminary Setup
Modulation Balance
Transmit Frequency and Power
Transmit Power Adjustment Screen
High Power Level = 3.0 watts Low Power Level = 1.0 watt
Data Deviation
Squelch Adjust
Rssi Adjust
Audio Deviation
Receiver Performance Tests
Performance Tests
Transmit Modulation
Power Output
Transmitter Performance Tests
Transmit Frequency
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Ref No Description
Parts List
Display Assembly
Chassis Parts
Display Assembly
KEY Assembly
KEY Assembly
If Assembly
If Assembly
RF Unit
PLL Assembly
RF Unit
NJM2904V-TE1 IC
RF Unit
Logic Unit
Logic Unit
TDA7233D IC
Logic Unit
200K ERJ3GE
MP35 MP18 MP25
EP2
KEY Front Panel
EP1
MP32 MP33 MP27 MP34 MP28 MP29 MP23 MP22 MP30 MP24 MP26 MP18
PLL Board TOP View
Schematic Diagrams and Component Layouts
PLL Board Bottom View
If Board Bottom View
If Board TOP View
RF Unit
Transceiver Block Diagram
MIC
RF Board TOP View
If AMP
RF Board Schematic
HD1
Logic Board TOP View
Receive Audio Processing
Logic Board Schematic
GND KEYR3 KEYR2 KEYR1 KEYR0 KEYS3 KEYS2 KEYS1 KEYS0 GND
Display Board Bottom View
DS3 DS4 DS5
Display Board Schematic
KEY Board Back View
KEY Board Front View
S S R R R R
KEY Board Schematic
Scan
HC2 HC7 HC8 HC3
Schematic Diagrams and Component Layouts
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