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LIST OF FIGURES

Figure 3-1: Battery Removal..................................................................................... 3-4
Figure 3-2: Knob Removal........................................................................................ 3-4
Figure 3-3: Chassis Removal ................................................................................... 3-5
Figure 3-4: Unlatch Flex Connectors ........................................................................ 3-5
Figure 3-5: Remove Main Board from Chassis......................................................... 3-6
Figure 3-6: Remove Retainer.................................................................................... 3-7
Figure 3-5: Removing the Keypad Retainer and Other Boards from the Radio........ 3-8
Figure 3-6: Removal Speaker-Microphone Assembly .............................................. 3-9
Figure 3-7: PTT Removal.......................................................................................... 3-9
Figure 3-8: Lock Retainer Catches to the Radio’s Body......................................... 3-11
Figure 3-9: Fastening the Chassis.......................................................................... 3-12
Figure 3-10: Activating the Retrofit ........................................................................... 3-12
Figure 3-11: Changing Keypad/PassPort Board /Option Boards.............................. 3-13
Figure 3-12: HT750 Exploded View.......................................................................... 3-15
Figure 3-22: Programming/Test Cable AARKN4074 ................................................ 3-37
Figure 3-23: Pin Configuration of the Cable Side Connector.................................... 3-37
Figure 3-24: Programming/Test Cable Schematic.................................................... 3-38
Figure 4-1: Radio Side Button Location.................................................................... 4-3
Figure 4-2: HT1550•XLS Radio Side Button Location .............................................. 4-3
Figure 4-3: Two-Line Display.................................................................................... 4-4
Figure 4-4: Four-Line Display (HT1550•XLS) ........................................................... 4-4
Figure 5-1: Radio Tuning Test Equipment Setup...................................................... 5-2
Figure 5-2: CPS Programming Setup ....................................................................... 5-3
Figure 5-3: Radio Side Button Locations .................................................................. 5-4
Figure 5-4: HT1550•XLS Radio Side Button Locations ............................................ 5-4