Related Manuals for QSC 1200
Summarization of Contents
Product Specifications and Manual Overview
Introduction & General Information
Provides context for the manual and amplifier series.
Series One Test and Calibration
Guides on testing and calibrating amplifiers.
Series One Troubleshooting
Details common faults and circuit explanations.
Series One Circuit Description
Explains the internal circuitry and operation.
Series One Parts List
Lists components and part numbers for each model.
Semiconductors
Identifies key semiconductor components used.
Chassis Drawings
Provides visual assembly guides for chassis.
Diagrams and Schematics
Wiring Diagrams
Shows electrical connections for each model.
Schematics
Provides detailed circuit diagrams for models.
PCB Layout Traces
Illustrates printed circuit board component layouts.
Detailed Product Specifications
Output Power and Performance Specs
Covers power ratings, headroom, and distortion.
Gain, Distortion, and Frequency Specs
Details voltage gain, THD, and frequency response.
Noise, Sensitivity, and Impedance
Specifies noise levels, sensitivity, and input impedance.
Physical Dimensions and Weight
Lists physical attributes of the amplifiers.
Manual Introduction and Support
Documentation and Manual Structure
Explains the manual's organization and content.
Parts Ordering and Equivalent Parts
Guides on ordering parts and using equivalents.
Test Equipment and Factory Repair
Lists necessary test gear and repair options.
Test and Calibration Procedures
Model 1100 Test Procedure
Step-by-step guide for testing the Model 1100.
Model 1200 Test Procedure
Step-by-step guide for testing the Model 1200.
Model 1400 Test Procedure
Step-by-step guide for testing the Model 1400.
Model 1700 Test Procedure
Step-by-step guide for testing the Model 1700.
Troubleshooting Guide
Troubleshooting Current Draw
Addresses issues related to excessive current draw.
Troubleshooting Protection and Muting
Details problems with protection and muting circuits.
Troubleshooting Signal and Instability Faults
Covers signal issues and audio instability.
Troubleshooting Power Supply Issues
Focuses on power supply and voltage rail problems.
Circuit Description
Power Supply Circuit Details
Explains the amplifier's power supply operation.
Input, Gain, and Feedback Stages
Describes the initial signal processing stages.
Output Stages and Protection Circuits
Details output transistors and protection mechanisms.
Muting Delay and Thermal Shutdown
Explains muting and thermal protection functions.
Parts Lists and Diagrams - Model 1100
1100 Input Jack Panel
Lists parts for the 1100 input jack panel.
1100 Chassis Assembly
Lists parts for the 1100 chassis.
1100 Main Board Assembly
Lists parts for the 1100 main board.
Parts Lists and Diagrams - Model 1200
1200 Chassis Assembly
Lists parts for the 1200 chassis.
1200 Main Board Assembly
Lists parts for the 1200 main board.
Parts Lists and Diagrams - Model 1400
1400 Chassis Assembly
Lists parts for the 1400 chassis.
1400 Main Board Assembly
Lists parts for the 1400 main board.
Parts Lists and Diagrams - Model 1700
1700 Chassis Assembly
Lists parts for the 1700 chassis.
1700 Main Board Assembly
Lists parts for the 1700 main board assembly.
Semiconductor Component Information
Driver Transistor Diagrams
Shows diagrams for driver transistors.
Small Signal Transistors
Shows diagrams for small signal transistors.
Op Amp Diagrams
Shows diagrams for op amp ICs.
Chassis Assembly Diagrams
1100 Chassis Assembly Diagram
Exploded view of the 1100 chassis assembly.
1200 / 1400 Chassis Assembly Diagram
Exploded view of 1200/1400 chassis assembly.
1700 Chassis Assembly Diagram
Exploded view of the 1700 chassis assembly.
Wiring Diagrams
1100 Wiring Diagram
Shows wiring for the 1100 model.
1200 Wiring Diagram
Shows wiring for the 1200 model.
1400 Wiring Diagram
Shows wiring for the 1400 model.
1700 Wiring Diagram
Shows wiring for the 1700 model.
Schematics
1100 Schematic Diagram
Detailed circuit schematic for the 1100 model.
1200 Schematic Diagram
Detailed circuit schematic for the 1200 model.
1400 Schematic Diagram
Detailed circuit schematic for the 1400 model.
1700 Schematic Diagram
Detailed circuit schematic for the 1700 model.
Printed Circuit Board Layouts
1100 Input Jack PCB Layout
Layout for the 1100 input jack PCB.
1100 Main PCB Layout
Layout for the 1100 main PCB.
1200 / 1400 Main PCB Layout
Layout for 1200/1400 main PCBs.
1700 Ch.1 Main PCB Layout
Layout for the 1700 Ch.1 main PCB.
1700 Ch.2 Main PCB Layout
Layout for the 1700 Ch.2 main PCB.
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