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EFJohnson
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Two-Way Radio
EFJohnson
7780
service manual
Models:
7780
1
2
116
116
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116 pages
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Specifications
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 Tables
List of Figures
General Information
Scope of Manual Equipment Description
Part Number Breakdown
Accessories
Factory Customer Service
Transceiver Identification
Toll-Free 800
Accessories
Accessory
Factory Returns
Definitions
Replacement Parts
Internet Home Intrinsically Safe Information
Intrinsically Safe and Nonincendive Ratings
Temperature Code T3C
Possible Ignition Sources
Classification of Hazardous Areas and Atmospheres
Typical Hazard Group Class
Accessing PC Boards
Material Classification
Area Classification
Removing RF Unit
Removing Logic Unit
Specifications
General
Controls and Display
Features
Transceiver Operation
TX Indicator Red Indicates when the transmitter is keyed
Low-Battery Indicator Amber
Display
Display
Front Panel Keys Full Keypad Model
General Operation
Turning Power on and Setting Volume
Option Switches
Backlight
See
Option Switch Functions
Function Conv
Tone ENABLE/DISABLE
Scanning
Conventional and SMARTNET/ Smartzone Operation
Monitoring Before Transmitting
Conventional Features
Display Mode Selection
Call Guard Squelch
Monitor Mode
Busy Channel Lockout
Power Output Select
Penalty Timer
Conversation Timer
Conventional Mode Scanning
Priority Channel Sampling
DTMF/ANI Signaling
Standard Conventional Calls
Standard Group Calls
SMARTNET/SMARTZONE Features
Viewing Unit ID
Enhanced Private Conversation Calls
Transceiver Operation
Private Conversation II Calls
Telephone Calls
Call Alert
Sending Status Conditions
Emergency Alarm and Call
Messaging
Dynamic Regrouping
Failsoft Operation
SMARTNET/SMARTZONE Scanning
Supervisory Tones
Zone Change Parameter
Keypad Programming
Menu Description
Channel Parameters
Channel Change Parameter
System Parameters
Transceiver Programming
Programming Setup
Pctrunk Software Installation
Computer Description
Programming File Types
Connecting RPI to Computer and Transceiver
Starting and Exiting
Help Files
File Size Indication
Screen Pop-Up Buttons and File Size Indicator
Programming Procedure
Creating and Displaying Systems
Menu Commands
Menu Bar
Systems Menu
Radio Type Menu
Download Menu Upload Menu
Window Menu
Band
Defaults
RADIO-WIDE Parameter Screens
Zones
Modify List Screen
Radio Wide Scan List
Radio-Wide Scan List Screen
Assign Function Buttons
Full Spectrum CC Scan
RADIO-WIDE Conventional Screen
RADIO-WIDE SMARTNET/SMARTZONE Screen
Hot Dtmf
Programming Conventional Systems and Channels
Adjustable Parameters
RADIO-WIDE Portable Options Screen
Conventional System General Screen
Keypad Editing
Timers
Conventional System Modify Scan List Screen
Scan List Button
Priority Channel Selection
Scan Timers
Setting UP Conventional Channels
Conventional Channel Screen Parameters
Selected Channel
Channel Type
Transmit Power
Signaling
Tx Time-Out
ISW Delay Time
Restricted Access
Time-Out Timer
Splinter Channels
Phone Interconnect
SMARTNET/SMARTZONE System Other ID’S Screen
SMARTNET/SMARTZONE System Phone Interconnect Screen
Private Call
SMARTNET/SMARTZONE System Talk Groups Screen
SMARTNET/SMARTZONE System Emergency Settings Screen
Emergency Alarm
Failsoft Channel
Message Aliasing Screen
SMARTNET/SMARTZONE System Lists Screens
Trunking Phone List Screen
Announcement Groups Screen
Control Channels Screen
Trunking Call List Screen
SMARTNET/SMARTZONE Channel Screen Parameters
Setting UP SMARTNET/SMART- Zone Channels
Status Aliasing Screen
SMARTNET/SmartZone Channel Screen
Other Screen Parameters
Call Guard CTCSS/DCS Codes and Tones
Recommended Tone Call Guard Codes Freq
MHz Channels
MHz Channels
MHz Channels
MHz Channels
MHz Channels
MHz Channels
Circuit Description
Power Switching and Regulation
Power Switching
Synthesizer Description
Charge Pump Q1, Q2, Loop Filter
VCO and Tcxo Modulation
Synthesizer Chip IC1
If Amplifier Q2, LIMITER/DETECTOR IC3
Receiver Circuit Description
RF Amplifier Q1, First Mixer Q2
Transmitter Description
Antenna Switch and LOW-PASS Filter
Squelch Circuit IC4A/B, IC5A
Amplifier Q9, Driver Q8
Control Logic and Display
Receive Audio Processing
Microprocessor IC306 Pin Descriptions
Pin Port Name Input or Description Active High Output
Hvfulswlrq
Receive Data FILTER/DETECTOR IC102A/B, IC107A/B
Audio Amplifier IC104-IC106
Receive and Transmit Data Processing
Transmit Data Filter IC206B/ IC206A
Transmit Audio Processing
LOW-PASS Filter IC205A/B
Smartnet Data Processing
Power Setting Operating Time
Battery Pack and Charger Information
Battery Pack
Function Fahrenheit Celsius
Battery Pack and Charger Information
Alignment Procedure and Performance Tests
Test Setup
Tune Software Hqhudo
Mm/3/32 Mm/1/8 Phone Jack
Preliminary Setup
Main Pctune Screen
High Power Level = 3.0 watts Low Power Level = 1.0 watt
Transmit Frequency and Power
Transmit Power Adjustment Screen
Modulation Balance
Audio Deviation
Squelch Adjust
Rssi Adjust
Data Deviation
Performance Tests
Receiver Performance Tests
Transmit Frequency
Power Output
Transmitter Performance Tests
Transmit Modulation
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Chassis Parts
Parts List
Display Assembly
Ref No Description
KEY Assembly
Display Assembly
If Assembly
If Assembly
KEY Assembly
PLL Assembly
RF Unit
RF Unit
NJM2904V-TE1 IC
RF Unit
Logic Unit
Logic Unit
TDA7233D IC
Logic Unit
200K ERJ3GE
MP35 MP18 MP25
KEY Front Panel
EP2
EP1
MP32 MP33 MP27 MP34 MP28 MP29 MP23 MP22 MP30 MP24 MP26 MP18
PLL Board Bottom View
Schematic Diagrams and Component Layouts
PLL Board TOP View
If Board TOP View
If Board Bottom View
Transceiver Block Diagram
RF Unit
RF Board TOP View
MIC
RF Board Schematic
If AMP
Logic Board TOP View
HD1
Logic Board Schematic
Receive Audio Processing
Display Board Bottom View
GND KEYR3 KEYR2 KEYR1 KEYR0 KEYS3 KEYS2 KEYS1 KEYS0 GND
Display Board Schematic
DS3 DS4 DS5
KEY Board Front View
KEY Board Back View
KEY Board Schematic
S S R R R R
Scan
HC2 HC7 HC8 HC3
Schematic Diagrams and Component Layouts
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