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2 Section B

DR66 SERVICE MANUAL

CONTENTS

INTRODUCTION & WARNINGS.........................................................................................3-4

ORDERING A DR

UNIT, OPTIONS & DOCUMENTATION.............................................. 5

ORDERING SPARE ASSEMBLIES & SPARE PARTS ........................................................6-7

BLOCK DIAGRAM.............................................................................................................. 8

FRONT PANEL CIRCUIT BOARD COMPONENT IDENT...................................................AG3131

FRONT PANEL CIRCUIT DIAGRAM ..................................................................................C3131

CONVERTER CIRCUIT BOARD COMPONENT IDENT......................................................AG3135

CONVERTER CIRCUIT DIAGRAM sheet 2 of 9 (line inputs 1 to 4).....................................C3135

CONVERTER CIRCUIT DIAGRAM sheet 3 of 9 (mic inputs 1 & 2) .....................................C3135

CONVERTER CIRCUIT DIAGRAM sheet 4 of 9 (balanced line outputs 1 & 2) .................... C3135

CONVERTER CIRCUIT DIAGRAM sheet 5 of 9 (balanced line outputs 3 & 4) .................... C3135

CONVERTER CIRCUIT DIAGRAM sheet 6 of 9 (balanced line outputs 5 & 6) .................... C3135

CONVERTER CIRCUIT DIAGRAM sheet 7 of 9 (digital circuits & connectors).................... C3135

CONVERTER CIRCUIT DIAGRAM sheet 8 of 9 (codec circuits).........................................C3135

CONVERTER CIRCUIT DIAGRAM sheet 9 of 9 (power supply)..........................................C3135

MICROPROCESSOR CPU CIRCUIT BOARD COMPONENT IDENT................................. AG2604

MICROPROCESSOR CPU CIRCUIT DIAGRAM sheet 2 of 6 (interface) ............................C2604

MICROPROCESSOR CPU CIRCUIT DIAGRAM sheet 3 of 6 (CPU & memory) .................C2604

MICROPROCESSOR CPU CIRCUIT DIAGRAM sheet 4 of 6 (processing engine #1)......... C2604

MICROPROCESSOR CPU CIRCUIT DIAGRAM sheet 5 of 6 (processing engine #2)......... C2604

MICROPROCESSOR CPU CIRCUIT DIAGRAM sheet 6 of 6 (expander connectors) .........C2604

Refer to SECTION A for information on installation, calibration and

operation of the DR66.

ALLEN & HEATH DR66 Service Manual

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