Sega Saturn (Model 2)
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| A North American second-generation Saturn with the later control pad | |
| Specifications | |
|---|---|
| Manufacturer | Sega Enterprises, Ltd. |
| Type | Home video game console |
| Released | 22 March 1996 (Japan, HST-3220)[1] |
| Discontinued | 1998 (North America)[2] |
| Intro price | ¥20,000 (Japan, 1996)[1] |
| CPU | Two Hitachi SH-2 (32-bit RISC); 68EC000 at 11.3 MHz for sound[3] |
| Memory | Work RAM 16 Mbit; video RAM 12 Mbit; sound RAM 4 Mbit; CD buffer 4 Mbit; IPL ROM 4 Mbit; backup RAM 256 kbit[3] |
| Storage | Double-speed CD-ROM drive; battery-backed RAM; cartridge slot[3] |
| Display | — |
| Sound | 32 channels, PCM and FM, 16-bit, up to 44.1 kHz[3] |
| Dimensions | 260 × 230 × 83 mm[3] |
| OS / Firmware | IPL ROM, 4 Mbit |
| Predecessor | Sega Saturn (Model 1) |
| Successor | Sega Dreamcast |
| Model no. | HST-3220 (Japan); MK-80000A (North America); MK-80200A-50 (Europe)[1] |
The Sega Saturn (Model 2) is the cheaper second design of the Saturn. In Japan it is the white HST-3220, announced at Sega's "Sega Saturn Power Up Meeting '96 Spring" on 9 March 1996 and released on 22 March 1996 at ¥20,000; the North American MK-80000A and European MK-80200A-50 are its equivalents in a black case. Sega's vice-president Shoichiro Irimajiri attributed the price to mass-production savings and simplified internal circuitry.[1] Software and the specification are the same as the Sega Saturn (Model 1), and the specification table there applies here.[3]
Differences from the Model 1
[edit | edit source]The Model 1 is the HST-3200 and HST-3210 in Japan and the MK-80000 and MK-80200-50 abroad; the Model 2 is the HST-3220, MK-80000A and MK-80200A-50.[1] In Japan the case changed from dark grey to white; the photographs on the two pages show the change from oval to round buttons on the black Western cases.
The case does not fix the board. Early HST-3220 consoles are internally almost the same as the HST-3210, and Sega cut costs in many later steps; some late units lost compatibility with some software as chips changed.[1] Console5 lists surface-mount electrolytics on the VA0, VA0.5 and VA1 main boards and through-hole electrolytics on VA SG and later boards up to VA15.[4] Read the board's silkscreen before ordering parts.
Power
[edit | edit source]The Saturn runs from the mains through a power supply inside the case, with a detachable mains lead.[3] On the VA13 schematic the supply connector CN3 carries only +5 V and ground, and the main board makes its own 3.3 V (LVCC) rail for the SDRAM with regulator IC42 (RN5RG33A) and pass transistor TR5 (2SA1213). Sega's block diagram for the first-generation VA0 board shows three rails coming from the supply instead: +9 V, +5 V and +3.3 V.[5][6]
Warning: the supply's primary side is at mains potential and its reservoir capacitor can stay charged after unplugging. Discharge it before working on the supply.
Board changes
[edit | edit source]Positions and parts move between revisions. Two examples:
- IC5 is the SCU 315-5688 on the VA0 board and a 315-5966 on the VA13.[7][5]
- CE45 and CE46 are 330 µF and 330 µF on the earliest boards, 330 µF and 220 µF on VA1, VA SG and VA SD, and 220 µF and 330 µF from VA6 onwards.[4]
The CD subsystem, which the first HST-3200 had on a separate SH-1 board, is on the main board from the HST-3210 onwards.[1]
Backup battery
[edit | edit source]The backup RAM and clock run from a CR2032 cell, as on the Model 1.[7] The VA8 board pictured below carries it in holder BAT1 at the top right. See Battery Refurbishment.
Documentation
[edit | edit source]- Sega Saturn VA13 Service Manual (PAL): schematics of the VA13 main board and CD unit, with two power supply drawings.
- Sega Service Manual - Sega Saturn Pal - 1 June 1995: Sega's PAL manual for the first-generation machine; its CD drive procedure and IC functions are a useful reference for later boards.
- Sega Saturn VA0.5 Schematics: a hobbyist's traced schematic of an early board.
Gallery
[edit | edit source]-
VA8 main board (837-12468) -
For comparison: the inside of a first-generation HST-3200
Related pages
[edit | edit source]- Sega Saturn (Model 2) Maintenance Guide
- Sega Saturn (Model 2) Troubleshooting Guide
- Sega Saturn (Model 2) Capacitor Replacement Guide
- Sega Saturn (Model 1)
- Sega Dreamcast
References
[edit | edit source]- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Japanese Wikipedia, "セガサターン" (secondary source), section "バリエーション" (variants): the HST-3220 (product HST-0014) released 22 March 1996 at ¥20,000 after Sega's "Sega Saturn Power Up Meeting '96 Spring" of 9 March 1996; its white ("mist grey") case and twelve-month warranty; early HST-3220 units internally almost the same as the HST-3210, with cost reductions made in many later steps and some late units losing compatibility with some software; the translucent "This is Cool." model of 4 April 1998; and the overseas equivalents MK-80000A (North America) and MK-80200A-50 (Europe).
- ↑ Wikipedia, "Sega Saturn" (secondary source).
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 Sega Enterprises, Service Manual: Sega Saturn (PAL), No. 013-1, June 1995, section 1 "Specifications" (p. 3). Written for the first-generation PAL machine. See Sega Service Manual - Sega Saturn Pal - 1 June 1995.
- ↑ 4.0 4.1 Console5 TechWiki, "Saturn" (secondary source): capacitor lists by main-board revision (surface-mount VA0 to VA1; through-hole VA SG to VA15), power supplies and CD-ROM boards.
- ↑ 5.0 5.1 Conjunto P.C.I. VA-13 (Saturn VA13 schematic set, Portuguese title blocks, scanned by Brasilmodchip): main schematic diagram sheet 2/11 (IC5) and sheet 10/11 (CN3, IC42, TR5). See Sega Saturn VA13 Service Manual (PAL).
- ↑ Sega Enterprises, Service Manual: Sega Saturn (PAL), No. 013-1, June 1995, section 7 "Block diagram" (pp. 11-12). See Sega Service Manual - Sega Saturn Pal - 1 June 1995.
- ↑ 7.0 7.1 Sega Enterprises, Service Manual: Sega Saturn (PAL), No. 013-1, June 1995, section 11-3 "Electrical parts list" (pp. 72-77). See Sega Service Manual - Sega Saturn Pal - 1 June 1995.