Yamaha pm1000 mixing console service manual

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PA MIXER PM - 1000
SERVICE MANUAL

The PM-lOOO is a 4-bus mixing console with 16
input channels. Yamaha engineers, in cooperation
with soundmen, mixers and performers. designed
this board to meet with widely varied demands of
professional sound reinforcement, as well as studio
applications. Modular construction and all solid state
circuitry assure reliability and ease of maintenance.

To enhance its appearance, the console is finished
with durable, black-anodized aluminum panels and
housed in a handsome rosewood cabinet with a
padded armrest. Carrying handles on the side panels
and a padded leatherette cover are included as
standard equipment.

Every console is delivered complete with a full
complement of modules, and ready for use. Trans-
former isolated inputs and outputs, plus a precision,
wide~range input sensitivity selector on each channel
help simplify installation and optimize performance
with virtually any type of audio system. Further
convenience is afforded by the 40 XLR connectors,
eight (8) phone jacks and two (2) stereo phone
jacks that carry all input and output signals.

The PM-lOOO is built to exacting standards. It is
light, yet rugged enough to sustain the kind of punish-
ment that often occurs in portable applications. For
fixed installations, the console has all the features
and appearance of many larger, custom boards. Top
of the line performance at an economical price sets
the IM-1000 in a class by itself,

YAMAHA

006342
$0.: @ Printed in Japan 9 .8!

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CONTENTS

IDENTIFICATION OF PARTS &CONTROLS

MAIN COMPONENTS & SUB ASSEMBLIES ......................................... 1
INPUT MODULE ........................................................... 2
MASTER & MONITOR MODULE ................................................ 3
HEADPHONE & ECHO MODULE ................................................ 4
TALKBACK & OSCILLATOR MODULE ........................................... 4
METER PANEL ............................................................ 5
REAR PANEL ............... I ............................................. 5
SPECIFICATIONS
GENERAL SPECIFICATIONS .................................................. 6
DEFINITION OF TERMS: UNBALANCED, BALANCED & FLOATING ...................... 7
DEFINITION OF TERMS: DB,dBV,dBm&dB SPL ................................... 7
INPUT & OUTPUT CHARACTERISTICS ........................................... 7

MAINTENANCE & REPAIR

GENERAL MAINTENANCE NOTES .............................................. 8
ACCESS TO THE CONSOLE INTERIOR ........................................... 8
POWER SUPPLY REMOVAL BI REPLACEMENT ..................................... 8
INPUT, MASTER, HEADPHONE & TALKBACK MODULE REMOVAL & REPLACEMENT ......... 9

BLOCK & SCHEMATIC DIAGRAMS

BLOCK DIAGRAM OF PM-IOOO ................................................ 10
PM-IOOO SYSTEM HEADROOM ................................................. 11
PM-IOOO POWER SUPPLY SCHEMATIC ........................................... 11
PM-IOOO INPUT MODULE SCHEMATIC ........................................... 12
PM-IOOO FRAME SCHEMATIC ................................................. 12
PMvIOOO MASTER & MONITOR MODULE ......................................... 13
PM<1000 HEADPHONE & ECHO MODULE ......................................... 14
PM-IOOD TALKBACK & OSCILLATOR MODULE ..................................... 15
PERFORMANCE CHECKS ........................................................... 18

PARTS ASSEMBLY AND WIRING DIAGRAM

INPUT MODULE ........................................................... 21
MASTER AND MONITOR MODULE ............................................. 22
HEADPHONE AND ECHO MODULE ............................................. 23
TALKBACK AND OSCILIATOR MODULE ......................................... 24
FRONT AND REAR PANEL ................................................... 25
INSIDE CASE ............................................................. 26
POWER SUPPLY ........................................................... 27
POWER CIRCUIT ARRANGEMENTS ........................................... 28
PARTS LIST .......................................................................... 29
PM-1000 REPLACEMENT ............................................................ 35