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Two-Way Radio
EFJohnson
7780
service manual
MP32 MP33 MP27 MP34 MP28 MP29 MP23 MP22 MP30 MP24 MP26 MP18
Models:
7780
1
100
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116
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Specs
Install
Parts list
Transceiver Block Diagram
DTMF/ANI Signaling
Defaults
Penalty Timer
Low-Battery Indicator Amber
Replacement Parts
Accessories
Page 100
Image 100
PARTS LIST
MP32
F1
MP33
MP27
MP27
MP34
MP28
MP29
MP32
MP23
MP34
MP22
MP30
MP24
MP26
MP18
MP52
(Sticker)
November 1999
Part No.
001-7780-500
7-16
Page 99
Page 101
Page 100
Image 100
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Page 101
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
Accessories
Factory Customer Service
Part Number Breakdown
Transceiver Identification
Accessories
Accessory
Toll-Free 800
Factory Returns
Internet Home Intrinsically Safe Information
Replacement Parts
Definitions
Temperature Code T3C
Possible Ignition Sources
Intrinsically Safe and Nonincendive Ratings
Classification of Hazardous Areas and Atmospheres
Accessing PC Boards
Material Classification
Typical Hazard Group Class
Area Classification
Removing RF Unit
Removing Logic Unit
Specifications
General
Transceiver Operation
Features
Controls and Display
TX Indicator Red Indicates when the transmitter is keyed
Low-Battery Indicator Amber
Front Panel Keys Full Keypad Model
Display
Display
Turning Power on and Setting Volume
Option Switches
General Operation
Backlight
Function Conv
Option Switch Functions
See
Tone ENABLE/DISABLE
Scanning
Conventional and SMARTNET/ Smartzone Operation
Display Mode Selection
Conventional Features
Monitoring Before Transmitting
Busy Channel Lockout
Monitor Mode
Call Guard Squelch
Penalty Timer
Conversation Timer
Power Output Select
Conventional Mode Scanning
Priority Channel Sampling
DTMF/ANI Signaling
Standard Conventional Calls
SMARTNET/SMARTZONE Features
Viewing Unit ID
Standard Group Calls
Enhanced Private Conversation 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
Programming Setup
Pctrunk Software Installation
Transceiver Programming
Computer Description
Connecting RPI to Computer and Transceiver
Starting and Exiting
Programming File Types
Help Files
Screen Pop-Up Buttons and File Size Indicator
Programming Procedure
File Size Indication
Creating and Displaying Systems
Menu Commands
Menu Bar
Radio Type Menu
Download Menu Upload Menu
Systems Menu
Window Menu
Defaults
RADIO-WIDE Parameter Screens
Band
Zones
Radio Wide Scan List
Radio-Wide Scan List Screen
Modify List Screen
Assign Function Buttons
RADIO-WIDE Conventional Screen
RADIO-WIDE SMARTNET/SMARTZONE Screen
Full Spectrum CC Scan
Hot Dtmf
Adjustable Parameters
RADIO-WIDE Portable Options Screen
Programming Conventional Systems and Channels
Conventional System General Screen
Timers
Conventional System Modify Scan List Screen
Keypad Editing
Scan List Button
Setting UP Conventional Channels
Scan Timers
Priority Channel Selection
Conventional Channel Screen Parameters
Selected Channel
Transmit Power
Signaling
Channel Type
Tx Time-Out
Restricted Access
Time-Out Timer
ISW Delay Time
Splinter Channels
SMARTNET/SMARTZONE System Other ID’S Screen
SMARTNET/SMARTZONE System Phone Interconnect Screen
Phone Interconnect
Private Call
SMARTNET/SMARTZONE System Emergency Settings Screen
Emergency Alarm
SMARTNET/SMARTZONE System Talk Groups Screen
Failsoft Channel
Trunking Phone List Screen
SMARTNET/SMARTZONE System Lists Screens
Message Aliasing Screen
Announcement Groups Screen
Control Channels Screen
Trunking Call List Screen
Status Aliasing Screen
Setting UP SMARTNET/SMART- Zone Channels
SMARTNET/SMARTZONE Channel Screen Parameters
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
Power Switching and Regulation
Power Switching
Circuit Description
Synthesizer 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
Antenna Switch and LOW-PASS Filter
Squelch Circuit IC4A/B, IC5A
Transmitter Description
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 and Transmit Data Processing
Audio Amplifier IC104-IC106
Receive Data FILTER/DETECTOR IC102A/B, IC107A/B
Transmit Data Filter IC206B/ IC206A
Transmit Audio Processing
LOW-PASS Filter IC205A/B
Smartnet Data Processing
Battery Pack and Charger Information
Battery Pack
Power Setting Operating Time
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
Transmit Frequency and Power
Transmit Power Adjustment Screen
High Power Level = 3.0 watts Low Power Level = 1.0 watt
Modulation Balance
Squelch Adjust
Rssi Adjust
Audio Deviation
Data Deviation
Performance Tests
Receiver Performance Tests
Power Output
Transmitter Performance Tests
Transmit Frequency
Transmit Modulation
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Parts List
Display Assembly
Chassis Parts
Ref No Description
KEY Assembly
Display Assembly
KEY Assembly
If Assembly
If 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 TOP View
Schematic Diagrams and Component Layouts
PLL Board Bottom 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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