Enclosure not stated · 7 knobs

SCI Prophet VS

Category: Ring Mod / Synth· Full Synths Drum Synths and Misc Synth
Controls: Pitch · Mod · Joystick X · Joystick Y · Data Entry · Volume · Balance
Price: see vendor
Tags: Full Synths Drum Synths and Misc Synth

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Schematic

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Parts list 79 rows

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Check before you build · 3 values the reader of this schematic was not sure of

C115: drawn '220' without unit
R107-R109: no values drawn
Data Entry/Volume/Balance mapping to R106/R104/R102 inferred from wiring

Ref	Value	Normalized	Type	Notes
Resistors 10
R101	100	100		read from the schematic by eye
R103	270	270		read from the schematic by eye
R107	?	?		no value drawn (chorus right/left/cart LED lines); read from the schematic by eye
R108	?	?		no value drawn; read from the schematic by eye
R109	?	?		no value drawn; read from the schematic by eye
RP101	22K	22k		resistor network; read from the schematic by eye
RP102	270	270		resistor network, 270 x5; read from the schematic by eye
RP103	270	270		resistor network, 270 x5; read from the schematic by eye
RP104	270	270		resistor network, 270 x5; read from the schematic by eye
RP105	270	270		resistor network, 270 x5; read from the schematic by eye
Capacitors 20
C101	10uF	10u		16V electrolytic; read from the schematic by eye
C102	10uF	10u		tantalum; read from the schematic by eye
C103	2.2uF	2.2u		tantalum; read from the schematic by eye
C104	.1uF	100n		read from the schematic by eye
C105	.1uF	100n		read from the schematic by eye
C106	.1uF	100n		read from the schematic by eye
C107	.1uF	100n		read from the schematic by eye
C108	.1uF	100n		read from the schematic by eye
C109	.1uF	100n		read from the schematic by eye
C110	.1uF	100n		read from the schematic by eye
C111	.1uF	100n		read from the schematic by eye
C112	.1uF	100n		read from the schematic by eye
C113	.1uF	100n		read from the schematic by eye
C114	.1uF	100n		read from the schematic by eye
C115	220pF	220p		drawn '220' with no unit; sheet says capacitance in uF, but on a logic line this is surely 220pF; read from the schematic by eye
C116	.1uF	100n		read from the schematic by eye
C117	.1uF	100n		read from the schematic by eye
C118	.1uF	100n		read from the schematic by eye
C119	.1uF	100n		read from the schematic by eye
C120	.1uF	100n		read from the schematic by eye
Diodes 9
D101	1N34	1N34		germanium; read from the schematic by eye
D102	1N34	1N34		germanium; read from the schematic by eye
D103	1N914	1N914		legend: 1N914 x7; read from the schematic by eye
D104	1N914	1N914		legend: 1N914 x7; read from the schematic by eye
D105	1N914	1N914		legend: 1N914 x7; read from the schematic by eye
D106	1N914	1N914		legend: 1N914 x7; read from the schematic by eye
D107	1N914	1N914		legend: 1N914 x7; read from the schematic by eye
D108	1N914	1N914		legend: 1N914 x7; read from the schematic by eye
D109	1N914	1N914		legend: 1N914 x7; read from the schematic by eye
Transistors 1
Q101	2N3904	2N3904		read from the schematic by eye
ICs 12
U101	ADC0809	ADC0809		read from the schematic by eye
U102	74HC238	74HC238		drawn HC238; read from the schematic by eye
U103	74HC244	74HC244		drawn HC244; read from the schematic by eye
U104	74HC244	74HC244		drawn HC 244; read from the schematic by eye
U105	74LS174	74LS174		read from the schematic by eye
U106	74LS174	74LS174		read from the schematic by eye
U107	74HC4511	74HC4511		drawn HC 4511; read from the schematic by eye
U108	74HC244	74HC244		drawn HC 244; read from the schematic by eye
U109	74HC245	74HC245		drawn HC 245; read from the schematic by eye
U110	74HC245	74HC245		drawn HC 245; read from the schematic by eye
U111	74HC4511	74HC4511		drawn HC 4511; read from the schematic by eye
U112	78L05	78L05		regulator; read from the schematic by eye
Potentiometers 7
Pitch	100K	100k	Potentiometer	pitch wheel; read from the schematic by eye
Mod	100K	100k	Potentiometer	mod wheel; read from the schematic by eye
Joystick X	10K	10k	Potentiometer	on PC2400-5 joystick PCB; read from the schematic by eye
Joystick Y	10K	10k	Potentiometer	on PC2400-5 joystick PCB; read from the schematic by eye
Data Entry	10K	10k	Potentiometer	R106; read from the schematic by eye
Volume	10K	10k	Potentiometer	R104; read from the schematic by eye
Balance	10K	10k	Potentiometer	R102; read from the schematic by eye
Trimmers 1
R105	10K	10k		LCD view angle trim; drawn '10K (2K)*': 2K becomes valid when 10K pot stock runs out; read from the schematic by eye
Switches 15
S701	SPST	SPST		momentary panel button: Enter; read from the schematic by eye
S702	SPST	SPST		momentary panel button: Osc Sel; read from the schematic by eye
S703	SPST	SPST		momentary panel button: Wave; read from the schematic by eye
S704	SPST	SPST		momentary panel button: Course Freq; read from the schematic by eye
S705	SPST	SPST		momentary panel button: Fine Freq; read from the schematic by eye
S706	SPST	SPST		momentary panel button: Cutoff; read from the schematic by eye
S707	SPST	SPST		momentary panel button: Res; read from the schematic by eye
S708	SPST	SPST		momentary panel button: Env Amt; read from the schematic by eye
S801	SPST	SPST		momentary panel button: Edit Waveform; read from the schematic by eye
S802	SPST	SPST		momentary panel button: Name; read from the schematic by eye
S803	SPST	SPST		momentary panel button: Review; read from the schematic by eye
S804	SPST	SPST		momentary panel button: Store; read from the schematic by eye
S805	SPST	SPST		momentary panel button: Split; read from the schematic by eye
S806	SPST	SPST		momentary panel button: Link; read from the schematic by eye
S807	SPST	SPST		momentary panel button: Double; read from the schematic by eye
LEDs 1
×5	LED	LED		Split, Double, Review, Edit Wave Form, Store indicators on PC2400-8; no part number given; read from the schematic by eye
Other 3
L101	?	?		LCD backlight inverter module; read from the schematic by eye
×1	LCD 16x2	LCD 16X2		character LCD; read from the schematic by eye
×1	Dual 7-segment display	DUAL 7-SEGMENT DISPLAY		read from the schematic by eye