Korg ddd-1 Service Manual

3.SYSTEM EXPLANATION
1. Basic construction of the SYSTEM Is as follows. For each circuitry, refer to circuit explanation on Page 27.
CPU
78C10CW
0C2)
GATE ARRAY
MB881107
(IC22)
2. ORGANIZATION OF P.C. BOARD
KLM-6019 MAIN BOARD
KLM-6020 TAPE 1/0 BOARD
KLM-6021 PANNEL SW BOARD
KLM-6022 PANNEL SLIDE VR BOARD
KLM-6023 PANNEL LED BOARD
KLM-6007 POWER SUPPLY BOARD
PORT A
(OUT)
ROM AREA
32 Kbyte
RAM1 AREA
8 Kbyte
RAM 2 AREA
8 Kbyte
RAM CARD
AREA
8 Kbyte
BATE-ARRAY
AREA
SAMPLE 8256
AREA
NO USE
KEY-BOARD SELECT
MOUSE
OOOOH
7FFFH
8000H
9FFFH
AOOOH
BFFFH
COOOH
DFFFH
EOOOH
E7FFH
E800H
E803H
E804H
EFFFH
FOOOH
F001H
FFFFH
SOUND
SOURCE
ADDRESS
KJ
DAC
BLOCK R
(LADDER
RESISTOR)
SOUND MEMORY
MAX 512 WORD
WAVE ROM
83100040-254(1016)
8310O0-2O-255 (IC18)
MEMORY OUTPUT
DATA
"* "** "' * *
MULTIPUCAL
TYPE
OUTPUT CHANNEL
MULTIPLEXER
(74 HC 4051)
RAM CARD
BANK SELECT.
LPF
LPF
LPF LPF
rrTT
ANALOG OUTPUT (MAX 16 CH)
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Korg ddd-1 Specifications

General

Brand	Korg
Model	ddd-1
Category	Drums
Language	English