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Yamaha SY77 Service Manual

Yamaha SY77
57 pages
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CONTENTS (S>^)
SPECIFICATIONS
2
PANEL LAYOUT
!•)
4
CIRCUIT BOARD
LAYOUT
(^--y
I-
h)
6
BLOCK DIAGRAM
{-^
u
-j
9
7
^ 7
L.)
8
DISASSEMBLY
PROCEDURE
10
ASSEMBLY
PRECAUTIONS
15
LSI PIN DESCRIPTION
17
1C BLOCK
DIAGRAM
Ocya-y^m)
23
CIRCUIT BOARDS
(->-t-»^5EI)
25
ERROR
MESSAGES
(x-7->
-y-b-v)
44
TEST PROGRAM
(t^:^
I-
^^7
A)
48/72
MIDI
DATA
FORMAT
(MIDI t'-
5?7 ;r-V'y
h)
94
MIDI
IMPLEMENTATION
CHART
111
PARTS LIST
YAMAHA
CORP.
HAMAMATSU. JAPAN
2.27K-885
©
Printed in Japan
'90.01
SY77

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Yamaha SY77 Specifications

General IconGeneral
Polyphony16 voices
MIDIIn, Out, Thru
Year Released1989
Synthesis TypeAFM Advanced Frequency Modulation, AWM2 Advanced Wave Memory 2
Timbrality16
Keyboard61 keys
EffectsReverb, Chorus, EQ
Sequencer16 tracks
DisplayLCD
Oscillators6 operators
LFO2 LFOs
Filterresonant multimode filter
Memory64 preset voices, 64 user voices
Storage3.5" floppy disk drive
OutputsStereo
ConnectionsFoot controller, Foot Switch
TypeDigital

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