Motorola Portable Radio Ep450 Detailled Hkln4216c Manual
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HKLN4216CJune, 2005 UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 12-15 U480 Dual Opamp1 Unit 1 output 2.48 2Unit 1 (-) input2.48 3 Unit 1 (+) input 2.46 4GroundGND 5 Unit 2 (+) input 0.28 6Unit 2 (-) input0.29 7 Unit 2 output 0 8Vcc4.96 U490 Audio Power Amp1 Enable/shutdown 0.12 (Unsquelched) 2Bias reference3.26(Unsquelched) 3 (+) input 3.26 (Unsquelched) 4(-) input3.27(Unsquelched) 5 (-) output 3.25 (Unsquelched) 6Vcc7.48(Unsquelched) 7 Ground GND 8(+)...
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June, 2005HKLN4216C Notes: 12-16UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals
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Chapter 13 UHF Schematic Diagrams, Overlays, and Parts Lists 13.1 Introduction This section provides schematic diagrams, overlays, and parts lists for the radio circuit boards and interface connections. 13.1.1 Notes For All Schematics and Circuit Boards * Component is frequency sensitive. Refer to the Electrical Parts List for value and usage. 1. Unless otherwise stated, resistance values are in ohms (K = 1000), capacitance values are in picofarads (pF) or microfarads (µF), and inductance values are...
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June, 2005HKLN4216C 13-2UHF Schematic Diagrams, Overlays, and Parts Lists: Introduction 7. Circuit Block Interconnection Legend: 301-400 DC Regulation 401-450Microprocessor 451-550 Audio Name Description USWB+Unswitched Battery Voltage (always on) 5V 5 volts (regulated) 5R5 volts in RX mode only 5T 5 volts in TX mode only RESETLow-line reset signal from U320 to uP D3_3V Digital 3.3 volts (regulated) 3VAnalog 3 volts (regulated) TX_ENA Transmit enable signal from uP to transmitter PWR_SETDC voltage from...
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HKLN4216CJune, 2005 UHF Schematic Diagrams, Overlays, and Parts Lists: Speaker and Microphone Schematic 13-3 13.1.2 Six Layer Circuit Board Figure 13-1. Six-Layer Circuit Board: Copper Steps in Layer Sequence 13.2 Speaker and Microphone Schematic Figure 13-2. Speaker and Microphone Schematic 13.2.1 Speaker and Microphone Parts List Reference DesignatorMotorola Part No.Description MK15085880L01Microphone, electret SP1 5085738Z08 Speaker assembly with connector LAYER 1 (L1) LAYER 2 (L2) LAYER 3 (L3)...
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June, 2005HKLN4216C Notes: 13-4UHF Schematic Diagrams, Overlays, and Parts Lists: Speaker and Microphone Schematic
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INDEX A Antenna Matching Network, UHF 403-440 MHz Theory Of Operation ...............................8-4 Antenna Matching Network, UHF 438-470 MHz Theory Of Operation ...............................9-4 Antenna Matching Network, UHF 465-495 MHz Theory Of Operation .............................10-4 Antenna Matching Network, UHF 490-527 MHz Theory Of Operation ............................. 11-4 Antenna Matching Network, VHF 136-162 MHz Theory Of Operation................................4-4 Antenna Matching...
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June, 2005HKLN4216C 2INDEX: D DC Power Distribution Theory of Operation ........................................................................ 2-1 DC Regulation and Distribution Theory of Operation .......................................................... 2-1 Disclaimer .............................................................................................................................. ii Document...
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HKLN4216CJune, 2005 INDEX: 3 Keypad, UHF 403-440 MHz Theory Of Operation ..............................................................8-7 Keypad, UHF 438-470 MHz Theory Of Operation ..............................................................9-7 Keypad, UHF 465-495 MHz Theory Of Operation ............................................................10-7 Keypad, UHF 490-527 MHz Theory Of Operation ............................................................ 11-7 Keypad, VHF 136-162 MHz Theory Of...
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June, 2005HKLN4216C 4INDEX: Receiver Front-End, VHF 136-162 MHz Theory Of Operation ........................................... 4-1 Receiver Front-End, VHF 146-174 MHz Theory Of Operation ........................................... 5-1 Receiver, UHF 403-440 MHz Theory Of Operation ............................................................ 8-1 Receiver, UHF 438-470 MHz Theory Of Operation ............................................................ 9-1 Receiver, UHF 465-495 MHz Theory Of Operation...