Sony WRR-862A, Руководство по обслуживанию, Страница: 3 / 96

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WRR-862A/862B
Table of Contents
1. Operating Instructions
..................................................................... 1-1
2. Service Overview
2-1. Disassembly ................................................................................................ 2-1
2-2. Notes on Replacing the Parts ...................................................................... 2-4
2-2. Unleaded Solder .......................................................................................... 2-4
3. Electrical Alignment
3-1. Preparation .................................................................................................. 3-1
3-1-1. Equipment and Tools ................................................................. 3-1
3-1-2. Notes on Adjustment .................................................................. 3-2
3-2. Adjustment and Checking ........................................................................... 3-2
3-2-1. Current Consumption Check ...................................................... 3-3
3-2-2. Reference Frequency (4 MHz oscillation frequency)
Adjustment ................................................................................. 3-4
3-2-3. Output Level Adjustment ........................................................... 3-4
3-2-4. RF Squelch Level and RF Level Indicator Adjustment ............. 3-5
3-2-5. S/N Checking ............................................................................. 3-8
3-2-6. Distortion Ratio Check ............................................................. 3-10
3-2-7. Frequency Characteristic Check .............................................. 3-11
3-2-8. RF Squelch Level Check .......................................................... 3-12
3-2-9. RF Level Indicator Check ........................................................ 3-14
3-2-10. AF level Indicator/AF Indicator Check .................................... 3-15
3-2-11. Tone Squelch Check ................................................................ 3-16
3-2-12. TX BATT Transmitter (Battery) Indicator Check ................... 3-17
4. Spare Parts
4-1. Notes on Repair Parts .................................................................................. 4-1
4-2. Exploded Views and Parts List ................................................................... 4-2
4-3. Electrical Parts List ..................................................................................... 4-4
4-4. Supplied Accessories ................................................................................ 4-30
5. Semiconductor Pin Assignments
............................................. 5-1
6. Block Diagram
....................................................................................... 6-1