Asteroids Arcade Schematics and Wiring Diagrams PDF Download – Atari
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Asteroids Arcade Schematics and Wiring Diagrams PDF Download
Download eight scanned panels from the original 1979 Atari Asteroids main-PC-board schematic, Sheet 1, Side B. This digital PDF covers the 6502A microprocessor, RAM, ROM/PROM, power-input, clock, reset, watchdog, NMI, address-decoding, memory-map, and related control circuitry used on supported original Asteroids PCB revisions.
All eight scan panels have been reviewed and retained in full. No blank or duplicate pages were found.
Document Details
- Game: Asteroids
- Manufacturer: Atari, Inc.
- Document section: Sheet 1, Side B — Asteroids Microprocessor
- PCB assemblies: 034986-01 through -04, revision H; 034986-05 and -06, revision B
- Drawing year: 1979
- Page count: 8 scanned schematic panels
- File format: Digital PDF download
Circuits and Technical Information Included
- 6502A microprocessor and supporting MPU circuitry
- RAM selection and memory circuits
- ROM and PROM circuitry for supported PCB versions
- Main PCB power input and onboard voltage regulation
- Clock generation and timing circuitry
- Power-reset and watchdog counter circuits
- Non-maskable interrupt counter
- Address-decoding circuitry and Asteroids memory map
- PCB revision and component-location notes shown in the original drawing
Document scope: This download contains eight scan panels from Sheet 1, Side B only. It is not represented as the complete Asteroids cabinet wiring and schematic set.
Related Asteroids Hardware and Operator Manual
Add Free Play, permanent Top 10 high score saving, extended scoring, menu-driven settings, attract-mode protection, and optional Wi-Fi leaderboard support to compatible original Atari hardware with the HighScoreSaves Asteroids Free Play and High Score Save Kit .
For cabinet installation, self-test, option-switch, maintenance, repair, power-distribution, signal-distribution, and illustrated-parts information, download the Asteroids Operation, Maintenance and Service Manual PDF .
Confirm the Correct PCB Revision
Arcade schematics are hardware-specific. Compare the board assembly number, PCB revision, component designations, connector locations, and ROM configuration with your Asteroids board before testing or replacing components. Reproduction, bootleg, conversion, and alternate-revision boards may use different circuitry.
These drawings are technical references and do not provide a step-by-step solution for every possible fault. Board-level diagnosis requires suitable electronic test equipment and experience interpreting schematics.
Safety warning: Arcade cabinets and vector CRT monitors may contain hazardous voltages. CRT displays can retain a dangerous electrical charge after power is disconnected. Use a qualified arcade technician when you are not trained to work safely with arcade electronics.
How Digital Delivery Works
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Browse additional technical drawings in the Arcade Schematics and Wiring Diagrams category.
Digital product: No printed schematic, programmed chip, circuit board, disc, USB drive, or other physical item will be shipped.
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