Arp 1601 sequencer service manual

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WSEQUENCER MODEL'1601
SERVICE MANUAL

ARP INSTRUMENTS. INC.
320 Needham Street.
Newton, MA. 02164

617 965-9700

Document Numbet 9001901
© Sepmbor 1976, ARP IWRUMENTS. INC.

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THE INFORMATION CONTAINED HEREIN IS CONFIDENTIAL AND PROPRIETARY T0 ARP NSTRUMENTS, INC. IT IS
DISCLOSED TO YOU SOLELY FOR PUfiPOSES OF INSTHUCTION AS TO OPERATION OF THE EQUIPMENT AND
MAINTENANCE AS APPROPRIATE. IT Is NOT TO BE USED BY YOU FDER ANY OTHER PURPOSE, NOR IS IT TO BE
DISCLOSED TO OTHERS WITHOUT THE EXPRESS PERMISSION 0F ASP INSTRUMENTS, FNC.

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MSEQUENCER MODEL 1601
{ SERVICE MANUAL

TABLE OF CONTENTS

1. INTRODUCTION
1.1 Product Descriutiun ........................ 2
1.2 Specifications ............................ 2
1.3 Function Dasaimion ....................... 3

2. THEORY OF OPERATION
2. 1 Sequencer ............................... 4
22 Quantizer ............................... '1

3. CIRCUIT DESCRIPTIONS
SEOUENCER
3.1 Clock OnlOff ........................... . .5
3.2 OnaShot ..... 5
3.3 Clack Oscillator ........................... 5
3.4 Randomizer, Skipar Reset ................. . . .6
3.5 Mask Circuit ........................... . .B
3.6 5129 ................................... 6
3.7 Foot Switda Jack .......................... B
3.8 Counter/Latch ............................ 3
3.90:mder.............. ....... ...... B
3.10 Gate Output Processing ..................... 7
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3.1 1 Current Source 8: Semitonc Shift ............... 7
3.12 CV Generator 8: Scanner , . . ..... . ........... 7
3.13 Counter ............................... 7
3J4 Comparator. . . . . . . ...................... "I
3.15 Sample Control .......................... 7
3.16 Exurnaicv Input ........................ 7

. SEQUENCEH TEST POINTS ...... ' .......... . ...... 8,9
,CALIBRATIONS...-.. ......

I ASSEMBLYIDISASSEMBLY .

. BLOCK DIAGRAM .. .; .......................... 12
. GENERAL INFORMATION Icosmos integrated Circuitsr . . .13

. SCHEMATICS & LAYOUTS ............ .q14l15,lfi,17.18.19 '

1|). PARTS LIST .................................. 22

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