iii
4.8
Removing and Reinstalling the Circuit Board......................................................... 4-6
4.9
Power Up Self-Test Error Codes............................................................................ 4-6
4.10
200 MHz Troubleshooting Charts .......................................................................... 4-8
4.11
700 MHz Troubleshooting Charts ........................................................................ 4-14
4.12
PassPort Trunking Troubleshooting Chart ........................................................... 4-20
4.13
Keypad Troubleshooting Chart ............................................................................ 4-21
Chapter 5
Schematic Diagrams, Overlays, and Parts Lists
5.1
Introduction ............................................................................................................ 5-1
5.1.1
Notes For All Schematics and Circuit Boards ..................................................... 5-1
5.2
Flex Layout............................................................................................................. 5-2
5.2.1
Keypad/PassPort Controller Interconnect Flex Schematic.................................. 5-3
5.2.2
Keypad/PassPortController Interconnect Flex Parts List .................................... 5-3
5.2.3
Universal Flex Connector ................................................................................... 5-4
5.2.4
Universal Connector Flex Schematic .................................................................. 5-5
5.2.5
Universal Flex Connector Parts List .................................................................... 5-5
Figure 5-5.
200 MHz Main Board Bottom Side PCB 8486236Z06 ............................ 5-7
Figure 5-6.
200 MHz Main Board Top Side PCB 8486236Z06 ................................. 5-8
Figure 5-7.
200 MHz Receiver Front End Schematic Diagram ................................. 5-9
Figure 5-8.
200 MHz Receiver I-F Schematic Diagram .......................................... 5-10
Figure 5-9.
200 MHz Frequency Synthesizer Schematic Diagram ......................... 5-11
Figure 5-10.
200 MHz Voltage Controlled Oscillator Schematic Diagram ................ 5-12
Figure 5-11.
200 MHz Transmitter and Power Control Schematic Diagram ............. 5-13
Figure 5-12.
200 MHz Controller Block Diagram ...................................................... 5-14
Figure 5-13.
200 MHz Microprocessor Schematic Diagram ..................................... 5-15
Figure 5-14.
200 MHz Memory Schematic Diagram ................................................. 5-16
Figure 5-15.
200 MHz ASFIC Schematic Diagram ................................................... 5-17
Figure 5-16.
200 MHz Audio Power Amplifier Schematic Diagram........................... 5-18
Figure 5-17.
200 MHz Control and Indicators Schematic Diagram ........................... 5-19
Figure 5-18.
200 MHz Keypad/PassPort Board Interface Schematic Diagram......... 5-20
200 MHz Radio Parts List ................................................................................................ 5-21
Figure 5-19.
700 MHz Main Board Bottom Side PCB 8486220Z07 .......................... 5-25
Figure 5-20.
700 MHz Main Board Top Side PCB 8486220Z07 .............................. 5-26
Figure 5-21.
700 MHz Receiver Front End Schematic Diagram ............................... 5-27
Figure 5-22.
700 MHz Receiver I-F Schematic Diagram .......................................... 5-28
Figure 5-23.
700 MHz Frequency Synthesizer Schematic Diagram ......................... 5-29
Figure 5-24.
700 MHz Voltage Controlled Oscillator Schematic Diagram ................ 5-30
Figure 5-25.
700 MHz Transmitter and Power Control Schematic Diagram ............. 5-31
Figure 5-26.
700 MHz Controller Block Diagram ...................................................... 5-32
Figure 5-27.
700 MHz Microprocessor Schematic Diagram ..................................... 5-33
Figure 5-28.
700 MHz Memory Schematic Diagram ................................................. 5-34
Figure 5-29.
700 MHz ASFIC Schematic Diagram ................................................... 5-35
Summary of Contents for HT1250-LS+
Page 10: ...viii ...
Page 12: ...x Product Safety and RF Exposure Compliance ...
Page 16: ...1 4 Introduction ...
Page 58: ...4 22 Maintenance ...
Page 64: ...5 6 Schematic Diagrams Overlays and Parts Lists ...