LBI-38701
MAINTENANCE MANUAL
SERVICE SECTION
800 MHZ TRUNKED MOBILE RADIO
TABLE OF CONTENTS
Page
Description ............................................................................................................................................
3
Initial Adjustment .................................................................................................................................
3
Transmitter Adjustment ................................................................................................................
3
Receiver Adjustment .....................................................................................................................
3
Re-installation................................................................................................................................
3
Preventative Maintenance ....................................................................................................................
3
Connections ...................................................................................................................................
3
Electrical System...........................................................................................................................
3
Mechanical Inspection ..................................................................................................................
3
Antenna ..........................................................................................................................................
3
Alignment.......................................................................................................................................
3
Frequency Check ...........................................................................................................................
3
Disassembly Procedures.......................................................................................................................
3
To Remove Top Cover..................................................................................................................
4
To Remove Bottom Cover ............................................................................................................
4
To Remove The Duplexer Assembly...........................................................................................
4
To Remove The RF Board............................................................................................................
4
To Remove The Audio Board ......................................................................................................
5
To Remove The Front Cap Assembly .........................................................................................
5
To Remove The Logic Board .......................................................................................................
5
To Remove The Duplexer/Interface Board .................................................................................
7
To Remove The System Board ....................................................................................................
7
To Remove The Handset Interface Board ...................................................................................
7
Chip Component Replacement ............................................................................................................
7
To Remove Chip Components .....................................................................................................
7
To Replace Chip Components......................................................................................................
7
Troubleshooting Procedures ................................................................................................................
8
Self Diagnostics/Error Messages .................................................................................................
8
Test Preparation ....................................................................................................................................
11
Test Mode Commands..........................................................................................................................
11
Default Conditions ........................................................................................................................
11
Channel Frequency Select ............................................................................................................
11
Test Mode Commands and Functions.................................................................................................
11
Single Key Tests............................................................................................................................
12
Three Key Function Tests.............................................................................................................
14
1
Summary of Contents for LBI-38701
Page 6: ...Figure 4 Top View Figure 3 Bottom View Without Duplexer LBI 38701 6 ...
Page 21: ...AUDIO SIGNAL FLOW DIAGRAM LBI 38701 Figure 6 Audio Signal Flow Diagram 21 ...
Page 22: ...LBI 38701 CONTROL SIGNAL FLOW DIAGRAM Figure 7 Control Signal Flow Diagram 22 ...
Page 23: ...POWER DISTRIBUTION DIAGRAM LBI 38701 Figure 8 Power Distribution Diagram 23 ...