E.F. Johnson Company Summit DM 975x, Service Manual

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TABLE OF CONTENTS (CONT’D)
iv
Revised December 2000
Part No. 001-9750-007
Identifying SMD Resistors . . . . . . . . . . . . . . . . . 7-5
SMD Capacitor Identification . . . . . . . . . . . . . . 7-6
SMD Inductor Identification . . . . . . . . . . . . . . . 7-7
Transistor/Diode Identification . . . . . . . . . . . . . 7-7
8 ALIGNMENT PROCEDURE AND
PERFORMANCE TESTS
8.1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Test Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
8.2 FREQUENCY ADJUSTMENT . . . . . . . . . . . . . 8-1
8.3 TRANSMITTER TUNEUP . . . . . . . . . . . . . . . . 8-2
C511 Adjustment (30 or 35 Watt Models Only) 8-2
Power Level 1 Adjustment . . . . . . . . . . . . . . . . . 8-2
Power Level 2-4, 2W Adjustment . . . . . . . . . . . 8-3
Modulation Balance . . . . . . . . . . . . . . . . . . . . . . 8-3
Transmit Data Level Adjustment . . . . . . . . . . . . 8-3
Transmit Audio Limiting Adjust . . . . . . . . . . . . 8-3
8.4 RECEIVER ALIGNMENT . . . . . . . . . . . . . . . . . 8-4
Front End Alignment . . . . . . . . . . . . . . . . . . . . . 8-4
RSSI Detect Adjust. . . . . . . . . . . . . . . . . . . . . . . 8-4
Squelch Adjust . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
Local Tone Level Adjust . . . . . . . . . . . . . . . . . . 8-5
8.5 RECEIVER PERFORMANCE TESTS . . . . . . 8-6
8.6 TRANSMITTER PERFORMANCE TESTS . . 8-6
9 PARTS LIST
RF and PA Boards, Hardware and Miscellaneous 9-1
Audio/Logic Board . . . . . . . . . . . . . . . . . . . . . . . 9-9
Front Panel Assembly. . . . . . . . . . . . . . . . . . . . 9-15
Compandor Kit . . . . . . . . . . . . . . . . . . . . . . . . . 9-16
Hardware and Cable Kit . . . . . . . . . . . . . . . . . . 9-16
Remote Control Unit and Remote Kit . . . . . . . 9-17
Accessory Wire Kit . . . . . . . . . . . . . . . . . . . . . 9-17
Transceiver Mounting Kit . . . . . . . . . . . . . . . . 9-17
Transceiver Exploded View (Part 1) . . . . . . . . 9-19
Transceiver Exploded View (Part 2) . . . . . . . . 9-20
10 SCHEMATIC DIAGRAMS AND
COMPONENT LAYOUTS
Miscellaneous
Basing Diagrams . . . . . . . . . . . . . . . . . . . . . . 10-1
Standard Amplified Dynamic Microphone . . 10-2
Transceiver-To-Transceiver Cloning Cable . 10-3
RPI (Part No. 023-9800-000) Schematic. . . . 10-3
RPI-To-Transceiver Programming Cable . . . 10-4
RPI (Part No. 023-9800-000) Board Layout . 10-4
RF and PA Board Component Locator Guide 10-5
Audio/Logic Board Comp. Locator Guide . . . 10-8
Interconnect Schematic . . . . . . . . . . . . . . . . 10-11
Display Board Schematic . . . . . . . . . . . . . . . 10-12
Display Board Layout. . . . . . . . . . . . . . . . . . 10-13
RF Board
Revised 800 MHz Schematic . . . . . . . . . . . . 10-14
800/900 MHz Board Layout. . . . . . . . . . . . . 10-15
900 MHz Schematic . . . . . . . . . . . . . . . . . . . 10-16
Unrevised 800 MHz Schematic . . . . . . . . . . 10-17
PA Board
Revised 800 MHz, 35W Schematic . . . . . . . 10-18
Revised 800 MHz, 15W Schematic . . . . . . . 10-19
Revised 800 MHz, 15W/35W Board Layout 10-20
900 MHz, 30W Schematic . . . . . . . . . . . . . . 10-21
900 MHz, 15W Schematic . . . . . . . . . . . . . . 10-22
900 MHz/Unrev. 800 MHz Board Layout . . 10-23
Unrevised 800 MHz, 35W Schematic . . . . . 10-24
Unrevised 800 MHz, 15W Schematic . . . . . 10-25
Audio/Logic Board
Schematic (Part 1 of 2) . . . . . . . . . . . . . . . . . 10-26
Schematic (Part 2 of 2) . . . . . . . . . . . . . . . . . 10-27
Board Layout Top View . . . . . . . . . . . . . . . . 10-28
Board Layout Bottom View . . . . . . . . . . . . . 10-29
Revised Compandor Board Schematic . . . . . 10-30
Revised Compandor Board Layout . . . . . . . 10-30
Remote Transceiver
Interconnect Schematic . . . . . . . . . . . . . . . . 10-31
Control Unit Interface Board Schematic . . . 10-32
Control Unit Interface Board Layout . . . . . . 10-33
APPENDIX A REVISION SUMMARY
A.1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . A-1
A.2 TRANSCEIVER OPERATING SOFTWARE
UPDATES . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
A.3 REVISION LETTER CHANGES . . . . . . . . . . A-1
Transceiver Revision Letter . . . . . . . . . . . . . . . A-1
Control Unit Revision Letter . . . . . . . . . . . . . . . A-1
A.4 PROGRAMMING SOFTWARE CHANGES . A-1
A.5 REMOTE CONTROL UNIT
COMPATIBILITY . . . . . . . . . . . . . . . . . . . . . . A-3
A.6 WIDE AREA GROUP TRACKING
PROGRAMMING . . . . . . . . . . . . . . . . . . . . . . A-3
A.7 NEW FEATURES . . . . . . . . . . . . . . . . . . . . . . . A-4
Bank Start at Home Feature . . . . . . . . . . . . . . . A-4
Group Proceed Tone Delay . . . . . . . . . . . . . . . . A-4
A.8 OTHER LATE CHANGES . . . . . . . . . . . . . . . A-7