Korg t series t1 t2 t3 sm

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SERVICE MANUAL

THE KORG PROFESSIONAL
PERFORMANCE SERIES

T-SEBIES

T1 TETB

CONTENTS
1. SPECIFICATIONS .................................... 1
2. STRUCTURAL DIAGRAM ............................. 3
3. BLOCK DIAGRAM ................................... 11
4. cmcurr DIAGRAM .................................. 12
s. p.c. BOARD ........................................ 23
6. CHECKS .......................... . ................. 34
7. REFERENCE DATA .................................. 4o
8. PARTS LIST ......................................... 45

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1. SPECIFICATIONS

l)

2)

3)

4)

5)

6)

7)

8)

9)

IO)

11)

12)

13)

14)

No. of VOICES

KEYBOARD

TONE GENERATOR

NAVEFORHS
for SOUND SOURCE

QUANTIZATION
SAMPLING FREQUENCY
No. of PROGRAMS

No. of COIBINATIONS

SEQUENCER CAPACITY

CARD SLOTS

INPUT TERIINALS

OUTPUT TERIINALS

IIDI TERIINALS

DISPLAY

: 18 voices / 16 oscillators at Single mode

8 voices / 16 oscillators at Double mode

2 88 key for T1 / Type [E

( with initial & after touch capabilities )
76 key for T2 / Type FS
( with initial 0 after touch capabilities )
61 key for T3 / Type FS
( with initial & after touch capabilities )

: 0C < optinized covolution ) system

by KORG exclusive LSI ( l387402. MBST403A )

: 190 waveforms by Sampling & DWGS and 85 waveforms

from DRUM & PERCUSSIONS

Those are contained in 16x4Mbit MASK ROMS

( 64Mbit totally )

Further extensible to use sound data from the DSM-l
and other models for MIDI sample dump standards
when equipped with optional RAMS

( using 512Kward x 16bit as the RAM area. >

i 16bit

i 31 25 KHZ

I 200 I BANK SW. 100 / A + 100 / B )
I 100

: Approxl 50000 notes. 20 songs / 200 patterns

8 track. 8 Multi timbers
( dynamic voice allocation )

I #1 for PROG / SEQ DATA CARD

#2 for PC DATA CARD

: Damper pedal. Assignable pedals 1 & 2

: l/L & 2/R ( Output impedance less than 10K ohms

Remaining noise less than -80dBm/JIS-A )
3. 4 ( Output impedance less than 1K ohms

Remaining noise less than -80dBm/JIS-A)
Phones < Output impedance 100 ohms / STEREO )

I IN. THRU. OUT AI & 2, OUT BI & 2

: LCD with 240 x 64 full dot matrix