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Manuals
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JBL Manuals
Amplifier
SA660
Service manual and replacement parts
JBL SA660 Service Manual And Replacement Parts
Integrated
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Table Of Contents
59
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59
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59
Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Index
Description of Operating Controls and Connections
Functions of Front Panel Controls
Power Switch
Headphone Jack
Tape Monitor Switch
Stereo/Mono Switch
Input Panel Connections
Tape Play
Input Panel
Input Panel Controls
Balance Control
Phono Cartridge Matching Switch
Back Panel Connections
Performance Specifications
Introduction
Test Points
Harmonic Distortion
Intermodulation Distortion
Sensitivity
Bass Control
Treble Control
Volume Control
Transient Response
Output Impedance
Measurement Techniques
Testing High Level Inputs
Total Harmonic Distortion
Harmonic Distortion Test
I.M.distortion Test
Hum and Noise
Noise Test
Testing Low Level Inputs
Distortion
Theory of Operation
Overall Circuit
Power Amplifier Details
Output T-Circuit
Basic "T" Circuit
Power Amplifier Block Diagram
Why Emitter Followers Are Used
Thermal Stability
Purpose of the Bias Diode Assembly
The Cascaded Stages
Output Limitation
Driving Stage
Preamplifier Details
Preamplifier Block Diagram
Magnetic Phono Equalization
Emitter Follower Stage
Balance, Loudness and Volume Controls
Loudness Compensation
Interstage Amplifier
Bass and Treble Controls
Tone Control Block Diagram
Power Supply
Tone Control Curves
Differences between SA600 and SA660
Simplified SA660 Output Amplifier
System Troubleshooting
Amplifier Disassembly
Top Cover Removal
Preamplifier and Front Panel Removal
Top View
Front Panel
Sub Panel
Power Supply Removal
Driver Cirduir Board Removal
Front Panel Removal
Detailed Troubleshooting
Power Amplifier
Basic Stereo System Troubleshooting
Power Section Troubleshooting
R.F. Interference
Output Stage R.F. Filter
Preamplifier DC Test Voltages
Driver and SA600 Power Amplifier DC Test Voltages
SA660 Driver and Power Amplifier DC Test Voltages
Zender Diode Installation
Bias Diode Installation
Repair Precautions
Transistor Grease
Bias Diode Removal and Installation
Transistor Installation
Replacement of Resistors and Capacitors
Power Line Voltage Change
Initial Production
Preamplifier
Preamplifier Circuit Board
SA660 Capacitor Bracket
Driver Circuit Board
Replacement Parts
Resistors
Capacitors
Transistors
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Description of Operating Controls and Connections
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Table of Contents
Troubleshooting
System troubleshooting
24
Power supply removal
27
Basic stereo system troubleshooting
29
Power section troubleshooting
31
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