iv Table of Contents
Chapter 5 Performance Checks .......................................................... 5-1
5.1 Test Equipment Setup ................................................................................................................... 5-1
5.2 Display Radio Test Mode............................................................................................................... 5-3
5.3 Receiver Performance Checks ...................................................................................................... 5-7
5.4 Transmitter Performance Checks ................................................................................................ 5-10
Chapter 6 Radio Alignment Procedures............................................. 6-1
6.1 Test Setup...................................................................................................................................... 6-1
6.2 Tuner Main Menu........................................................................................................................... 6-2
6.3 Softpot............................................................................................................................................ 6-2
6.4 Radio Information........................................................................................................................... 6-4
6.5 Transmitter Alignments .................................................................................................................. 6-4
6.6 Front End Filter Alignment ........................................................................................................... 6-20
6.7 Performance Testing.................................................................................................................... 6-21
Chapter 7 Encryption ........................................................................... 7-1
7.1 Load an Encryption Key................................................................................................................. 7-1
7.2 Multikey Feature ............................................................................................................................ 7-3
7.3 Select an Encryption Key............................................................................................................... 7-3
7.4 Select an Encryption Index ............................................................................................................ 7-4
7.5 Erase an Encryption Key ............................................................................................................... 7-5
Chapter 8 Disassembly/Reassembly Procedures ............................. 8-1
8.1 APX 2000/ APX 4000 (Two Knobs) Exploded View (Main Subassemblies).................................. 8-1
8.2 Required Tools and Supplies......................................................................................................... 8-3
8.3 Fastener Torque Chart................................................................................................................... 8-4
8.4 Radio Disassembly ........................................................................................................................ 8-5
8.5 Serviceable Components of the Main Sub-Assemblies ............................................................... 8-17
8.6 Radio Reassembly....................................................................................................................... 8-26
8.7 Ensuring Radio Submergibility..................................................................................................... 8-38
Chapter 9 Basic Troubleshooting ....................................................... 9-1
9.1 Power-Up Error Codes................................................................................................................... 9-1
9.2 Operational Error Codes ................................................................................................................ 9-2
9.3 Receiver Troubleshooting .............................................................................................................. 9-3
9.4 Transmitter Troubleshooting .......................................................................................................... 9-4
9.5 Encryption Troubleshooting ........................................................................................................... 9-4
Chapter 10 Exploded Views and Parts Lists ...................................... 10-1
10.1 APX 2000/ APX 4000 (Two Knobs) Front Kit Exploded View...................................................... 10-2
10.2 APX 2000/ APX 4000 (Two Knobs) Front Kit Exploded View Parts List...................................... 10-3
10.3 APX 2000/ APX 4000 (Two Knobs) Back Kit Exploded View ...................................................... 10-4
10.4 APX 2000/ APX 4000 (Two Knobs) Back Kit Exploded View Parts List ...................................... 10-5