Service Manuals, User Guides, Schematic Diagrams or docs for : . Rare and Ancient Equipment BOSS DR-770 DR-770_SERVICE_NOTES
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DR-770 Feb. 1999
SERVICE NOTES SPECIFICATIONS
q Instruments
First Edition 255
Issued by RJA q Maximum Polyphony
14 voices 14 voices
Dr. Rhythm q Rhythm Patterns
Preset Patterns : 400
User Patterns : 400
q Song
TABLE OF CONTENTS Page Songs
Song Length
:100
: Maximum 250 parts for a song
SPECIFICATIONS ............................................................................................... 1 Total Parts for Songs : 10,000
Deterioration in the conductive coating inside the case ............................................................................................... 2 q Effect
PANEL LAYOUT ............................................................................................... 2 Reverb,Flanger
EXPLODED VIEW ............................................................................................... 3 q Resolution
Per quarter note : 96
PARTS LIST ............................................................................................... 4
LOADING THE FACTORY PRESET DATA ............................................................................................... 6 q Tempo
Quarter note=20 ~ 260
IDENTIFYING THE VERSION NUMBER ............................................................................................... 6
USER DATA SAVE AND LOAD ............................................................................................... 6 q Data Input Method
Realtime/Step
How to save the User Data ............................................................................................... 6
q Maximum Note Storage
How to load the User Data ............................................................................................... 7 approx.11,200note
TEST MODE ............................................................................................... 8
q Output Level
TROUBLESHOOTING ............................................................................................... 11 Max.7 Vp-p(L(MONO),R)
ERROR MESSAGE ............................................................................................... 12
q Noise Level
BLOCK DIAGRAM ............................................................................................... 13 Less Than -78 dBm(DIN AUDIO)((L(MONO))
CIRCUIT DIAGRAM (JACK) ............................................................................................... 14
q Output Impedance
CIRCUIT BOARD (JACK) ............................................................................................... 15 1k(L(MONO),R, INDIVIDUAL))
CIRCUIT DIAGRAM (MAIN) ............................................................................................... 16 q Power Source
CIRCUIT BOARD (MAIN) ............................................................................................... 17 AC Adaptor BOSS BRC Series
Change Information ............................................................................................... 18 q Current Draw
700mA
q Dimensions
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