Crown UT-2020 Manuals

Manuals and User Guides for Crown UT-2020. We have 1 Crown UT-2020 manual available for free PDF download: Service Manual

Crown UT-2020 Service Manual

Crown UT-2020 Service Manual (581 pages)

CE SERIES PROFESSIONAL AUDIO AMPLIFIERS

Brand: Crown | Category: Amplifier | Size: 16.46 MB

Table of Contents

Service Manual
1
Table of Contents
5
Technical Information
9
The CE-Series
11
CE 2000 Front and Back Panels
11
1 Introduction

11
- Warranty
  11
- Specifications
  12
  - Performance
    12
  - Power
    12
  - Controls
    12
  - Indicators
    12
  - Input/Output
    12
  - Connectors
    12
  - Construction
    12
    
    Dimensions
    13
    
    Weight
    13
2 Maintenance

14
- Surface Mount Technology
  14
- Cautions and Warnings
  14
- Troubleshooting
  14
  - Pre-AC-Checks
    14
  - Main Module Removal
    15
  - Static Checks
    15
- Checkout/Adjustment Procedures
  15
  - Equipment Required
    16
  - Initial Conditions
    16
  - Test Procedure
    16
  - Service Kit Wire Extensions
    16
    
    CE 1000 with Main Module Removed and Service Kit Installed
    17
    
    Bridge MONO
    19
3 Circuit Theory

23
- Front End Operation
  23
  - Balanced Gain Stage (BGS)
    23
  - Variable Gain Stage (VGS)
    23
- Error Amp
  24
- Voltage Amplification
  24
  - Voltage Translator
    24
- Output Topology
  24
  - Last Voltage Amplifier
    24
  - Bias Servo
    24
  - Pre-Driver
    25
  - Driver
    25
  - Output Devices
    25
  - Flyback Diodes
    25
  - Output Terminating Network
    25
- Power Supply
  25
  - Low Voltage Supply
    25
  - Bootstrap Supply
    25
  - High Voltage Supply
    26
  - Constant Current Source
    26
- Protection Circuitry
  26
  - Time Dependent VI Limit
    26
  - Temperature Protection
    27
  - Low-Frequency and Short-Circuit Protection
    27
  - Input Compressor
    27
  - Turn-On Delay
    28
  - Output Relay Muting
    28
  - Input Muting
    28
  - Auxiliary Output Jack
    28
- Fan Control Circuitry
  28
4 Neutrik Connectors

29
- Order of Assembly for the Neutrik Speakon NL4FC Connector
  29
- Stereo Output Wiring
  29
- Wiring for the Neutrik Speakon NL4FC Connector
  29
- Detailed Neutrik Speakon NL4FC Connector Assembly
  30
- Component Documentation
  31
- General Information
  33
- Ordering Parts
  33
- Shipment
  33
- Standard and Special Parts
  33
- Terms
  33
6 Exploded Views, Parts Lists

35
7 Module and Schematic Information

78
- Input PWA
  78
- Main Pwas
  78
- Schematic Diagrams
  78
- Module Parts Lists
  81
- Pwa 102139-6
  100
  - Component Map
    100
  - Parts List
    104
- Pwa 102139-8
  121
  - Component Map
    121
- Pwa 102139-9
  142
  - Component Map
    142
- Component Map
  163
- Component Map
  184
- Component Map
  205
- Component Map
  227
- Component Map
  249
- Component Map
  271
- Component Map
  308
- Component Map
  328
- Component Map
  350
- Component Map
  370
- Component Map
  391
- Component Map
  412
- Component Map
  433
- Component Map
  455
- Component Map
  477
- Component Map
  499
- Component Map
  520
- Component Map
  542
  - Field Modifications
    545
  - Timing/Mute Capacitors
    545
  - Bootstrap Resistor Modification
    548
  - Channel 1 Output to Channel 2 Speakon
    549

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