December 1991 · Computer or hardware

Sega Mega-CD (Japan) (1991)

The Japanese launch of Sega's CD drive add-on for the Mega Drive, ten months before the US Sega CD.

Released December 12, 1991 at 49,800 yen. A 12.5 MHz 68000 and ASIC with scaling and rotation hardware extended the Mega Drive. Sonic CD was the best seller at 1.5 million; the system sold 2.24 million total worldwide.

See 1991 in the interactive timeline

Facts

Date: December 1991
Kind: Computer or hardware: Console add-on
Maker or publisher: Sega
CPU: Motorola 68000 @ 12.5 MHz
Media: CD-ROM
Units sold: 2.24 million (all regions)
Generation: 4th
First sold in: Japan
Notable games: Sonic CD; Lunar: The Silver Star; Popful Mail; Snatcher

Source: Wikipedia

Manuals and technical documents

Service manuals, schematics and datasheets for this machine, kept in our own library. Check your own board and part numbers against them.

Mega CD 2 - Additional Information (Service manual)
Mega-CD Maintenance Manual, Export, August, 1992, Rev A (Service manual)
Sega CD 2 - Mega CD 2 - Service Manual, Number 002, August, 1993 (Service manual)
Sega CD 2 - Mega CD 2 - Service Manual, Number 002, August, 1993 SUPPLEMENT (Service manual)
Sega Service Manual - Genesis, Mega Drive PAL, Mega CD - Sega CD, No 010, April, 1994 (Service manual)

All 5 documents for Sega CD and Mega-CD in the library

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Guides: How to fix a dead vintage computer · Retro PC starter kit: the gear worth buying

Sega CD (successor, 1992)
Sega 32X (rival, 1994)

Also in 1991

Everything from 1991