Ericsson LPE-200 manual TX/RX Audio

Page 47

SCHEMATIC DIAGRAM	AE/LZB 119 1902 R1A

TX/RX Audio

(1911-ROA 117 2297, Sheet 10, Rev. B)

47

Image 47

Contents Maintenance Manual AE/LZB 119 1902 R1A DEC Original issueTable of Contents General Error Codes SpecificTransmit ReceiveDescription Mechanical Options and AccessoriesControls OperationOPT Keypad SCAN/SYSTEM FunctionsSCN RX Front End Circuit AnalysisSoftware ReceiverRx Back End DSP Module Phase Digitizer D701Audio Power Amplifier N600 Digital I/O LinesTX/Converter/Modulator N150 TransmitterTransmit Frequency Generation Directional Coupler W100 Power Amplifier N101Power Sensor Circuit N102-A SAW Transmit Band Pass FilterSynthesizer DC Power Distribution Analog Regulator N900 Tx Switch+ Switch +5V-D Switching Regulator N902Programming ServiceLCD Negative Bias Generator Equipment RequiredFlash Programming Programming ModeBasic Troubleshooting General Troubleshooting Symptom Possible Cause/Action RequiredTransmit Path Test Points and Levels Fatal Errors Error Codes IntroductionError Code Overview Error Code FormatHardware Fatal System Errors Non-Fatal ErrorsSpecial Error Codes Error Codes SpecificOperational Software Fatal System Errors Operational Software Non-Fatal System Errors Message Code Description Radio Programming ErrorsRadio Errors That Are Returned From The Bootloader Software AE/LZB 119 1902 R1A To disassemble the LPE-200 radio Disassembly ProcedurePush Battery Contacts Reassembly PA Module ReplacementFilters Z400 And Z401 Replacement Radio, 900 MHz Assembly Diagram and Parts ListFront Assembly Scan SXK 107 Front Assembly ScanFront Assembly System Rear Assembly SXK 107 Radio Rear AssemblyROA 117 MHz Main Circuit Board AssemblyMHz Circuit Board Front SideBack Side Block Diagram Transmitter Transmit Offset Synthesizer Receiver Front End Receiver Back End RF Regulators Digital I/O Lines to RF Section Analog I/O Lines to RF Section TX/RX Audio ROA 117 2297, Sheet 11, Rev. B Flex Connector DSP Connectors System Memory Regulators/Power Switch LCD Bias, LED Driver, UDC SWA+ OUT Debbie D601 Hillary D701 Ericsson Inc