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Sammy Atomiswave SD

Sammy's dedicated candy cab for its Atomiswave system (2003). A neat industrial trick: it reuses the Taito Egret 3 shell under licence, with a Wei-Ya monitor and power supply. "SD" = Standard.

Identification

Field Value
Manufacturer Sammy
Year 2003
Type Candy cab (licensed Egret 3 shell)
Screen 29″ CRT tri-sync 15/24/31 kHz (Wei-Ya M3192D chassis), rotatable
Controls 1L6B panel + memory-card reader (default); 2L12B Egret 3 possible
PCB format JAMMA + half-JVS

⚡ Connector & power

Aspect Value
PCB connector JAMMA (56-pin edge) + half-JVS
Monitor sync tri-sync 15/24/31 kHz (29″ CRT, Wei-Ya M3192D chassis), rotatable
Power Wei-Ya P271 brick (3.3 V / 5 V / 12 V), 100 V AC (Japan)
Naomi native JAMMA → for a pure Naomi/JVS, add a JVS I/O converter (Capcom/Sega)
Dimensions 903 × 750 × 1450 mm (W×D×H) — 1765 mm with marquee (same as Egret 3)
Weight 102 kg

(Sources: Arcade Otaku.)

→ Detailed wiring: JAMMA (+ half-JVS) → JAMMA wiring, JVS wiring, JVS I/O boards (converter for Naomi) and Control panels.

Technical notes

  • Licensed Egret 3 shell: same dimensions (903 × 750 × 1450 mm), same panel bay. Egret II / Egret 3 panels and — with adaptation — Sega Astro/Blast/Naomi panels fit the housing.
  • Wei-Ya M3192D tri-sync 29″ monitor (15/24/31 kHz), rotatable for vertical games — as on the Egret 3.
  • Wei-Ya P271 PSU: supplies 3.3 V (on top of 5 V / 12 V) — handy for modern JVS systems.
  • I/O: mostly JAMMA with some JVS. The Atomiswave itself is a Sammy Naomi-class system; to run a genuine Naomi board over JVS you need a JVS I/O converter.
  • Dedicated memory-card reader on the stock 1L6B panel (save data for some Atomiswave games).
  • JIS screws.

Common faults

Symptom Likely cause Lead
Unstable image / geometry Wei-Ya M3192D chassis, recap Adjust + recap
No power Wei-Ya P271 brick Check 3.3 / 5 / 12 V
Naomi won't boot no JVS conversion Add a JVS I/O converter (Capcom/Sega)
JAMMA contacts oxidation Clean the edge connector

Repair

  • Recap + adjustments of the Wei-Ya M3192D chassis (like the Nanao MS9 principle).
  • Wei-Ya P271 PSU: service like a candy cab PSU.
  • Shell parts: interchangeable with the Taito Egret 3.

Photos / assets

(To add: Atomiswave SD, 1L6B panel + card reader, Wei-Ya monitor.)

Repair & maintenance

Modernise (video, PSU, JVS, upscaler, PC/FPGA) → Modernising a cabinet. CRT monitor (discharge HV!) → CRT safety (Nanao MS8/MS9 or equivalent chassis) · recap → Recap · diagnosis → PCB fault-finding.

Sources & attribution

Review & corrections

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