ROLAND SYSTEM 100 101

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10.

11.

12.

1976-7-30 SYSTEM'IOO-IOI

CONTENTS

SPECIFICATIONS .................................................... 2
PANEL DIAGRAM .................................................... 4
DISASSEMBLY ...................................................... 5
GENERAL LAYOUT .................................................... 6
CIRCUIT DESCRIPTION .............................................. 7
GENERAL BLOCK DIAGRAM .......................... I ............... 9
SEMICONDUCTOR ELECTRODES ........ I .............................. 9
PRINTED CIRCUIT BOARD ASSEMBLY PARTS LAYOUT

AND CIRCUIT DIAGRAM ............................................. 10
8-1. vco-4 VCO BOARD ............................................... 10
8-2. OP-27 VCF~VCA BOARD .......................................... 12
8-3. OP-30 A-44OHz OSC BOARD ...................................... 14
8-4. PS-22, PS-24 POWER SUPPLY BOARD ............................... 15
WIRING DIAGRAM .................................................. 16
ADJUSTMENT ............................................... I ........ 17
PARTS LIST ........................................................ 32
PARTS PICTURE ..................................................... 36

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1976-7-30 SYSTEM lOO-IOI

SYSTEM-100 SPECIFICATIONS

MODE L401

1. VCO (Voltage Controlled Oscillator)
Frequency Range: 3 Hz -40 KHz
VCO Output: 10 Vp-p
VCO Sync, Output: Pulse Wave

CONTROLS

Wave Form: Triangular Wave, Sawtooth Wave, Square Wave, Pulse Wave (Pulse Width Controlled)
Frequency: 10 Hz - 10 KHz (at A2 key) continuously variable
Fine Tuning: 1 act.
Pulse Width: 5% - 50% (Manual, ADSR, LFO)
Ext CJ: 1V/oct.
LFO

2. NOISE GENERATOR
Pink or White Noise Output: 10Vp-p

3. AUDIO MIXER
Ext. Input Impedance: more than 50 Kohm

CONTROLS
VCO, Noise, Ext. Input

4. HIGH PASS FILTER
HPF Cutoff Frequency: 10 Hz - 10 KHz

5. VCF (Voltage Controlled Filter)
Cutoff Frequency Range: 20 Hz - 100 KHz

CONTROLS
VCF Cutoff Frequency: 20 Hz - 20 KHz
Resonance: 0 ~ self oscillation
LFO/Ext. CV: 1V/oct.
Kybd. CV
ADSR

6. VGA (Voltage Controlled Amplifier)
CONTROLS
Initial Gain
LFO
ADSR

7. ENVELOPE GENERATOR (ADSR)

ADSR Output: +6V (contour peak)

Ext. Env. Input: same as above

Ext. Gate Input: +14V

ADSR Trig: KYBD Gate or LFO
CONTROLS

Attack Time: 04 msec. -3 sec:

Decay Time: 0.8 msec. -6 sec.

Sustain Level: 0 ~ 100% (contour peak)

Release Time: 0.8 msec. -6 sec.