Service manual

RELATED PUBLICATIONS AVAILABLE SEPARATELY
ASTRO Digital SABER User’s Guide ..........................................................................................................................68P81072C80
ASTRO Digital SABER Portable Radios Detailed Service Manual .............................................................................68P81076C10
TABLE TITLE PAGE
FIGURE TITLE PAGE
TYPE OF MANUAL MANUAL NUMBER
LIST OF TABLES
LIST OF ILLUSTRATIONS
1 Radio Alignment Test Setup ................................................................................................................................11
2 RSS Service Menu Layout ...................................................................................................................................12
3 Softpot Concept ...................................................................................................................................................12
4 Reference Oscillator Alignment Screen............................................................................................................13
5 Transmit Power Alignment Screen ...................................................................................................................14
6 Transmit Deviation Balance (Compensation) Alignment Screen......................................................................15
7 Transmit Deviation Limit Alignment Screen......................................................................................................16
8 Front-End Filter Alignment Screen ...................................................................................................................17
9 Functional Block Diagram.................................................................................................................................29
10 Connector Location Details...............................................................................................................................30
11 Control Top/PTT Flex and Connector Information............................................................................................31
12 Display Flex and Connector Information...........................................................................................................31
13 Speaker/Microphone Flex and Connector Information .....................................................................................32
14 Universal Flex and Connector Information .......................................................................................................32
15 Controller Board/RF Board Connector Information...........................................................................................33
16 Controller Board/Encryption Board Connector Information ..............................................................................33
17 Exploded View Diagram and Parts List ............................................................................................................34
SECTION VII. BASIC THEORY OF OPERATION
A. Introduction to This Section ..........................................................................................................................23
B. General Overview .........................................................................................................................................23
C. Analog Mode of Operation............................................................................................................................23
D. ASTRO Mode of Operation...........................................................................................................................23
E. RF Board Basic Theory of Operation............................................................................................................23
F. Controller Board Basic Theory of Operation.................................................................................................24
SECTION VIII. BOARD-LEVEL TROUBLESHOOTING
A. Introduction to This Section ..........................................................................................................................25
B. Replacement Board Procedures...................................................................................................................25
C. Power-Up Error Codes..................................................................................................................................25
D. Operational Error Codes...............................................................................................................................26
REPLACEMENT PARTS ORDERING ...........................................................................................................
inside back cover
CONTENTS (cont.)
TITLE PAGE
ii
1 ASTRO Digital SABER Basic Features..................................................................................................................1
2 Recommended Test Equipment.............................................................................................................................5
3 Service Aids for Board-Level Troubleshooting.......................................................................................................6
4 Recommended Tools for Board-Level Troubleshooting.........................................................................................6
5 Initial Equipment Control Settings..........................................................................................................................7
6 Test Environments .................................................................................................................................................7
7 Test Frequencies ...................................................................................................................................................8
8 Receiver Performance Checks ..............................................................................................................................9
9 Transmitter Performance Checks ........................................................................................................................10
10 Reference Oscillator Alignment............................................................................................................................13
11 Transmit Power Setting........................................................................................................................................14
12 Transmit Deviation Limit.......................................................................................................................................16
13 Torque Specifications...........................................................................................................................................22
14 Local Oscillator and First IF Frequencies.............................................................................................................24
15 Power-Up Error Code Displays............................................................................................................................25
16 Operational Error Code Displays .........................................................................................................................26
17 Receiver Troubleshooting Chart ..........................................................................................................................26
18 Transmitter Troubleshooting Chart ......................................................................................................................27