ARP Instruments 3620 Service Manual

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MODEL 3620 KEYBOARD
SERVICE MANUAL
THIS SERVICE MANUAL SHOULD BE USED WITH THE ARP 2600 SERVICE MANUAL
TABLE OF CONTENTS
1. 3620 DESCRIPTION
1.1 Introduction
1.2 Specifications
1.3 Function Descriptions
2. CIRCUIT DESCRIPTIONS
2.1 Keyboard Current Source
2.2 Second Voice Memory
2.3 Upper Voice Summation
2.4 Control Voltage Memory
2.5 Master Summation
2.6 Gate Generator
2.7 Memory Control
2.8 Low Frequency Oscillator
2.9 Vibrato Delay & Wave Shaping
3. TRIMS & ADJUSTMENTS
4. BOARD TEST POINTS
5. 3620 THREE BUS CONVERSION BOARD
6. 3620 CONTACT MAINTENANCE
7. ASSEMBLY/DISSASSEMBLY
8. 3620 DRAWINGS
8.1 Board Layout
8.2 Board Schematic
9. PARTS LIST
10. REVISIONS
ARP INSTRUMENTS, INC.
45 Hartwell Avenue
Lexington, MA 02173
(617) 861-6000
© 1977, ARP INSTRUMENTS, INC.
DOCUMENT NO. 9000400