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Manuals
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Realistic Manuals
Portable Radio
DX-390
Service manual
Realistic DX-390 Service Manual
Am/fm world-band portable radio
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Table Of Contents
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Contents
Specifications: FM
Specifications: MW
Specifications: SW
Specifications: LW
Disassembly Instructions
To Remove Back Cover
To Remove Control PCB
To Remove Main PCB
Block Diagram
Alignment Instructions
Alignment for Clock Time Accuracy
Alignment for PLL Frequency
Alignment for am 2ND Local OSC
Alignment for am 2Nd if
Alignment for FM if
Alignment for am Sensitivity
Alignment for BFO
Alignment for FM Sensitivity
Alignment for MPX
Alignment for Indication Level of Battery
Alignment for Signal Strength Level
Alignment for 450Khz Trap
Alignment for FM Station Detection
Troubleshooting Flow Chart
PLL Does Not Work
Power Cannot be Turned on
Wiring Diagram
Main PCB Chip Side
Main PCB Top View
Control PCB Chip Side
Control PCB Top View
Electrical Parts List
Semiconductor Lead Identifications
Exploded View
Mechanical Parts List
IC Circuit Block Diagram
ICS' & Transistors' Voltage List
Schematic Diagram
Schematic Diagram (Cat. No. 20-214)
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Contents
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Specifications: Fm
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Specifications: Sw
4
Troubleshooting Flow Chart
5
Power Cannot be Turned on
6
Electrical Parts List
7
Schematic Diagram
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