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LPE-200
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SCHEMATIC DIA G RAM
TX/RX Audio
(1911-ROA 117 2297, Sheet 10, Rev. B)
AE/LZB 119 1902 R1A
47
Contents
Main
AE/LZB 119 1902 R1A
TABLE OF CONTENTS
SPECIFICATIONS*
GENERAL
SPECIFICATIONS
RECEIVE
TRANSMIT
DESCRIPTION
MECHANICAL
OPTIONS AND ACCESSORIES
OPERATION
CONTROLS
AE/LZB 119 1902 R1A
KEYPAD SCAN/SYSTEM FUNCTIONS
Key Function
M
Key Function
A/D
SCN
OPT
1-9, *, 0, #
CIRCUIT ANALYSIS
SOFTWARE
RECEIVER RX Front End
AE/LZB 119 1902 R1A
Rx Back End
Page
TRANSMITTER Transmit Frequency Generation
TX/Converter/Modulator (N150)
SAW Transmit Band Pass Filter 1
MMIC Buffer Amplifier
SAW Transmit Band Pass Filter 2
Power Amplifier (N101)
Directional Coupler (W100)
Power Control Buffer (N102-B)
Transmit Low-Pass Filter/Antenna Switch
Transmit Modulation
SYNTHESIZER Dual Synthesizers (N203)
Bilateral Switch (N201)
Main Synthesizer (N203)
Auxiliary Synthesizer (N203)
Reference Oscillator (U201)
DC POWER DISTRIBUTION
Synthesizer Regulator (N290)
Tx Switch (V192)
B+ Switch (V191)
Analog Regulator (N900)
+5V-D Switching Regulator (N902)
LCD NEGATIVE BIAS GENERATOR
SERVICE
NOTE
EQUIPMENT REQUIRED
Equipment Description Part Number
PROGRAMMING Personality Programming
AE/LZB 119 1902 R1A
Flash Programming
Programming Mode
BASIC TROUBLESHOOTING
Symptom Possible Cause/Action Required
Page
Page
Non-Fatal Errors
Special Error Codes
ERROR CODES - SPECIFIC Hardware Fatal System Errors
Operational Software Fatal System Errors
Operational Software Non-Fatal System Errors
Radio Programming Errors
Page
DISASSEMBLY PROCEDURE
F
NOTE
PA Module Replacement
Filters Z400 And Z401 Replacement
REASSEMBLY
Radio, 900 MHz
LPE-200 Radio 900 MHz
Front Assembly SCAN
Front Assembly (Scan) SXK 107 3807*
Front Assembly SYSTEM
Front Assembly (System) SXK 107 3808*
Radio Rear Assembly
Rear Assembly SXK 107 3815
900 MHz Main Circuit Board Assembly
900 MHz Main Board Assembly ROA 117 2297