Crown Audio IQ-USM 810 manuals

172 pages12.77 Mb

Digital Processor / Digital Mixer
SERVICE MANUAL
- Some models may be exported under the name Amcron.
- Models: IQ-USM 810
- 2CAUTION AVIS
- WARNING
  - 5Table of Contents
    - 1 Introduction ............................................................................ 1-1
    - 4 Maintenance........................................................................... 4-1
  - 6Table of Contents
    - 5 Parts Information................................................................... 5-1
    - 9 Schematics ............................................................................ 9-1
    - 1.1 Introduction
    - 1.2 The IQ-USM 810
    - 1.3 Warranty
  - 71 Introduction
    - Crown Customer Service
  - 92 Specifications
    - General
    - RS232 Data Communication
    - Crown Bus Data Communication
    - Audio
    - Control Port
    - Mechanical
  - 113 Circuit Theory
    - 3.1 Overview
    - 3.2 Power Supply
    - 3.3 Input
      - 3.3.1 Input Analog Processing
      - 123.3.2 Clock Signals
      - 3.3.3 A/D Conversion
      - 3.4.3 Output Analog Processing
      - 3.3.4 DC Voltages
      - 3.4.2 DAC Conversion
    - 143.4 Output
      - 3.4.1 Clock Buffers
    - 153.5 SHARC Processing
      - 3.5.1 +3.3V Power Supply
      - 3.5.2 Clocks
      - 3.5.3 Reset
      - 3.5.4 System Controller Interface
      - 163.5.5 PLDs
      - 3.5.6 Bus Arbitration
      - 3.5.7 Bus Utilization
      - 3.5.8 DSP Processing
      - 3.5.9 Audio Routing
    - 183.6 System Controller
      - 193.6.1 Control Processing
      - 3.6.2 RS232
      - 3.6.3 Crown Bus Loop
      - 3.6.4 Real Time Clock
      - 3.6.5 Front Panel
      - 3.6.6 Control Port
    - 203.7 Front Display
  - 214 Maintenance
    - 4.1 General Information
    - 4.2 Definitions
    - 4.3 Required Test Equipment
    - WARNING
    - 224.4 IQ Message String Syntax
      - 4.4.1 Host to Device Messages
      - 4.4.2 Device to Host Messages
    - 4.5 Standard Initial Conditions
    - 4.6 Test Procedures
      - 4.6.1 LOAD PRESET 32
      - 4.6.2 OUTPUT NOISE
      - 4.6.3 FREQUENCY RESPONSE
      - 4.6.4 HARMONIC DISTORTION
      - 4.6.5 COMMON MODE REJECTION
      - 234.6.6 HEAD ROOM / INPUT CLIP LEVEL
      - 4.6.7 INPUT POTENTIOMETER
      - 4.6.8 PHANTOM SUPPLY
      - 4.6.9 CONTROL PORT OUTPUT VOLTAGE PINS
      - 4.6.10 CONTROL PORT LOGIC INPUTS
      - 4.6.11 CONTROL PORT LOGIC OUTPUTS
      - 244.6.12 CONTROL PORT ANALOG INPUTS
      - 254.6.13 DISPLAY TEST
      - 4.6.14 PUSHBUTTON TEST
      - 4.6.15 REAL TIME CLOCK
      - 264.6.16 IQ BUS MASTER CONTROL
      - 4.6.17 IQ BUS DROPOUT RELAY OPERATION
      - 4.6.18 IQ BUS HUB / DAISY CONNECTIONS
      - 4.6.19 SHIPPING STATE RESTORATION
      - 4.6.20 CHASSIS GROUND
      - 4.4.21 HI-POT
    - 274.7 Typical Measurements
    - 4.8 Test/Debug Objects
    - 284.9 Display Test Patterns
    - 294.10 Error Codes
    - 4.11 Troubleshooting FAQs
    - 5.1 General Information
    - 5.2 Ordering and Receiving Parts
      - 5.2.1 Terms
      - 5.2.2 Shipment
  - 315 Parts
    - Crown Customer Service
  - 336 Exploded View Parts
    - 6.1 General Information
    - 356.2 Chassis Assembly
    - 7.1 General Information
    - 7.2 IQ-USM 810 Modules
      - 7.2.1 Front Panel Display PWA:
      - 7.2.2 System Controller PWA:
      - 7.2.3 SHARC PWA:
      - 7.2.4 Input PWA:
      - 7.2.5 Output PWA:
    - 7.3 Schematic Diagrams:
      - 7.3.1 Front Panel Display PWA
      - 7.3.2 System Controller PWA
      - 7.3.3 SHARC PWA
      - 7.3.4 Input PWA
      - 7.3.5 Output PWA
  - 377 Module and Schematic Information
  - 398 Module Parts
  - 1719 Schematic Diagrams