Sega Tera Drive: Difference between revisions

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|Mounting Technology =  
|Mounting Technology =  
|Capacitor Types = Through Hole
|Capacitor Types = Through Hole
|Leak Risk = High
|Leak Risk = Medium
|Batteries = None
|Batteries = None
|Destructive Entry = No
|Destructive Entry = No
}}
}}


The Sega Tera Drive is an early Japanese DOS/V computer which consists of an IBM PS/55 (the Japanese variant of the IBM PS/2) and a Sega Mega Drive on the same motherboard. The two systems can communicate with one another, in contrast to the Amstrad Mega PC. At this time, only two commercial titles are known to use this capability: Puzzle Construction and The Manhole. Puzzle Construction has a game editor on the PC side, which runs games on the Mega Drive side. The Manhole is a PC game which uses the Mega Drive's [https://en.wikipedia.org/wiki/Yamaha_YM2612 Yamaha OPN2] for FM synthesis.
The [[Tottori Sanyo SPS-356JU (Sega Tera Drive Power Supply)|power supply]] commonly fails, and its capacitors are listed on the linked wiki page.


== Known Issues ==
== Known Issues ==
=== MD/PC or Video Mode Switches Are Glitchy / System Randomly Resets ===
==== Causes ====
* The switches have failed
* The switches have cracked solder joints
==== Solutions ====
* Replace switches with new ones
* Resolder switch pins


=== Video Glitching / Unable To Maintain Horizontal Refresh ===
=== Video Glitching / Unable To Maintain Horizontal Refresh ===
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|Aluminum Electrolytic
|Aluminum Electrolytic
|Panasonic/Matsushita
|Panasonic/Matsushita
|KA
|[[Capacitor Series#KA-A|KA]]


|-
|-
|C6, C9, C16, C23
|C6, C9, C16, C25
|4
|4
|470 µF
|470 µF
Line 80: Line 93:
|Aluminum Electrolytic
|Aluminum Electrolytic
|Nichicon
|Nichicon
|RS(M)
|[[Capacitor Series#RS|RS(M)]]


|-
|-
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|Aluminum Electrolytic
|Aluminum Electrolytic
|Nichicon
|Nichicon
|RS(M)
|[[Capacitor Series#RS|RS(M)]]


|-
|-
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|Aluminum Electrolytic
|Aluminum Electrolytic
|Panasonic/Matsushita
|Panasonic/Matsushita
|KA
|[[Capacitor Series#KA-A|KA]]


|-
|-
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|Aluminum Electrolytic
|Aluminum Electrolytic
|Panasonic/Matsushita
|Panasonic/Matsushita
|KA
|[[Capacitor Series#KA-A|KA]]
 
|}
 
{| class="wikitable sortable"
|+Switches
!RefDes
!Qty
![https://caps.wiki/wiki/Part_Footprints Mount]
!Poles
!Positions
!Actuator Direction
!Actuator Length
!Actuator Travel
!Actuator Size
!Pin Spacing
!Width
!Height
!Depth
!Brand
!Series
 
|-
|S1, S3
|2
|Through Hole
|1
|2
|Horizontal
|9 mm
|2 mm
|2 mm x 2 mm
|2 mm
|14.5 mm body, 15.3 mm mounting holes
|8.5 mm
|7 mm
|Alps
|SSSF112500


|}
|}
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=== Motherboard ===
=== Motherboard ===
{| class="wikitable sortable"
{| class="wikitable sortable"
|+Capacitors
|+Parts
! RefDes
! RefDes
! Qty
! Qty
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|29
|29
|Wurth Elektronik 860020372003
|Wurth Elektronik 860020372003
|[https://mou.sr/3Bt3sP2 Mouser]
|[https://www.digikey.com/en/products/detail/w%C3%BCrth-elektronik/860020372003/5727027?s=N4IgTCBcDaIBwDYAMSxIMwHY0ZAXQF8g DigiKey] [https://mou.sr/3Bt3sP2 Mouser]


|-
|-
|C6, C9, C16, C23
|C6, C9, C16, C25
|4
|4
|Wurth Elektronik 860020374012
|Wurth Elektronik 860020374012
|[https://mou.sr/4exOPZB Mouser]
|[https://www.digikey.com/en/products/detail/w%C3%BCrth-elektronik/860020374012/5727036?s=N4IgTCBcDaIBwDYAMSxIMwHYAsSCMEAugL5A DigiKey] [https://mou.sr/4exOPZB Mouser]


|-
|-
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|5
|5
|Wurth Elektronik 860020372006
|Wurth Elektronik 860020372006
|[https://mou.sr/4eouXbb Mouser]
|[https://www.digikey.com/en/products/detail/w%C3%BCrth-elektronik/860020372006/5727030 DigiKey] [https://mou.sr/4eouXbb Mouser]


|-
|-
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|4
|4
|Wurth Elektronik 860020372004
|Wurth Elektronik 860020372004
|[https://mou.sr/3TXE5LO Mouser]
|[https://www.digikey.com/en/products/detail/w%C3%BCrth-elektronik/860020372004/5727028 DigiKey] [https://mou.sr/3TXE5LO Mouser]


|-
|-
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|2
|2
|Wurth Elektronik 860020373010
|Wurth Elektronik 860020373010
|[https://mou.sr/3XS8eNH Mouser]
|[https://www.digikey.com/en/products/detail/w%C3%BCrth-elektronik/860020373010/5727034 DigiKey] [https://mou.sr/3XS8eNH Mouser]


|-
|-
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|10
|10
|Wurth Elektronik 860020372001
|Wurth Elektronik 860020372001
|[https://mou.sr/3zJEyKF Mouser]
|[https://www.digikey.com/en/products/detail/w%C3%BCrth-elektronik/860020372001/5727025?s=N4IgTCBcDaIBwDYAMSxIMwHY1IIwgF0BfIA DigiKey] [https://mou.sr/3zJEyKF Mouser]


|-
|-
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|2
|2
|Wurth Elektronik 860020372002
|Wurth Elektronik 860020372002
|[https://mou.sr/3zDHOY1 Mouser]
|[https://www.digikey.com/en/products/detail/w%C3%BCrth-elektronik/860020372002/5727026?s=N4IgTCBcDaIBwDYAMSxIMwHY2pAXQF8g DigiKey] [https://mou.sr/3zDHOY1 Mouser]


|-
|-
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|2
|2
|Wurth Elektronik 860020672006
|Wurth Elektronik 860020672006
|[https://mou.sr/4dDQgV5 Mouser]
|[https://www.digikey.com/en/products/detail/w%C3%BCrth-elektronik/860020672006/5727089?s=N4IgTCBcDaIBwDYAMSxIQdjekBdAvkA DigiKey] [https://mou.sr/4dDQgV5 Mouser]


|-
|-
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|1
|1
|Wurth Elektronik 860020672007
|Wurth Elektronik 860020672007
|[https://mou.sr/3XTzbR2 Mouser]
|[https://www.digikey.com/en/products/detail/w%C3%BCrth-elektronik/860020672007/5727090?s=N4IgTCBcDaIBwDYAMSxIQdjUjIC6AvkA DigiKey] [https://mou.sr/3XTzbR2 Mouser]
 
|-
|S1, S3
|2
|Alps SSSF112500
|[https://mou.sr/4es8vhk Mouser]


|-
|-
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== Related Links ==
== Related Links ==


* [[Tottori Sanyo SPS-356JU (Sega Tera Drive Power Supply)]]


== References ==
== References ==
<references />
<references />
[[Category:Motherboard]]
[[Category:1990s]]
[[Category:IBM]]
[[Category:Sega]]

Latest revision as of 04:03, 1 November 2024

For more information, see this article's corresponding Wikipedia page: TeraDrive.
Sega Tera Drive
Preliminary Information
Release Year 1991
Leak Risk Medium
Batteries None
Capacitor Types Through Hole
Destructive Entry No

The Sega Tera Drive is an early Japanese DOS/V computer which consists of an IBM PS/55 (the Japanese variant of the IBM PS/2) and a Sega Mega Drive on the same motherboard. The two systems can communicate with one another, in contrast to the Amstrad Mega PC. At this time, only two commercial titles are known to use this capability: Puzzle Construction and The Manhole. Puzzle Construction has a game editor on the PC side, which runs games on the Mega Drive side. The Manhole is a PC game which uses the Mega Drive's Yamaha OPN2 for FM synthesis.

The power supply commonly fails, and its capacitors are listed on the linked wiki page.

Known Issues

MD/PC or Video Mode Switches Are Glitchy / System Randomly Resets

Causes

  • The switches have failed
  • The switches have cracked solder joints

Solutions

  • Replace switches with new ones
  • Resolder switch pins

Video Glitching / Unable To Maintain Horizontal Refresh

Causes

  • Out-of-spec capacitors

Solutions

  • Replace capacitors

Noisy Mega Drive Graphics

Causes

  • Bad PCB Design
  • Low quality custom chips

Solutions

  • None yet. The Mega Drive Triple Bypass needs to be adapted for this system.

Disassembly Notes

The board is somewhat tricky to get out the first time you try. Also, the front face plate requires an unreasonable amount of force to remove, and must be done carefully to avoid breaking the tabs.

Original Parts

Motherboard

Capacitor Specifications and Footprint Information
RefDes Qty Capacitance Voltage Mount Diameter/Size Height Lead Spacing Temp Type Brand Series
C1, C2, C3, C5, C8, C10, C12, C13, C14, C15, C17, C19, C24, C26, C30, C31, C32, C33, C36, C37, C38, C40, C41, C43, C45, C48, C49, C54, C57 29 33 µF 16 V Through Hole 5 mm 8 mm 5 mm 85 °C Aluminum Electrolytic Panasonic/Matsushita KA
C6, C9, C16, C25 4 470 µF 16 V Through Hole 10 mm 10 mm 5 mm 85 °C Aluminum Electrolytic Nichicon RS(M)
C7, C21, C51, C52, C58 5 100 µF 16 V Through Hole 8 mm 7 mm 5 mm 85 °C Aluminum Electrolytic Nichicon "H049" code
C46, C47, C55, C56 4 47 µF 16 V Through Hole 6 mm 7 mm 5 mm 85 °C Aluminum Electrolytic Nichicon "A107" code
C53, C60 2 220 µF 16 V Through Hole 8 mm 10 mm 5 mm 85 °C Aluminum Electrolytic Nichicon RS(M)
C4, C18, C22, C28, C29, C34, C35, C42, C50, C59 10 10 µF 16 V Through Hole 5 mm 7 mm 5 mm 85 °C Aluminum Electrolytic Nichicon "A113" code
C27, C44 2 22 µF 16 V Through Hole 5 mm 7 mm 5 mm 85 °C Aluminum Electrolytic Nichicon "A104" code
C20, C23 2 2.2 µF 50 V Through Hole 4 mm 8 mm 5 mm 85 °C Aluminum Electrolytic Panasonic/Matsushita KA
C39 1 3.3 µF 50 V Through Hole 4 mm 8 mm 5 mm 85 °C Aluminum Electrolytic Panasonic/Matsushita KA
Switches
RefDes Qty Mount Poles Positions Actuator Direction Actuator Length Actuator Travel Actuator Size Pin Spacing Width Height Depth Brand Series
S1, S3 2 Through Hole 1 2 Horizontal 9 mm 2 mm 2 mm x 2 mm 2 mm 14.5 mm body, 15.3 mm mounting holes 8.5 mm 7 mm Alps SSSF112500

Replacement Parts

Motherboard

Parts
RefDes Qty Compatible Part Number Order Links
C1, C2, C3, C5, C8, C10, C12, C13, C14, C15, C17, C19, C24, C26, C30, C31, C32, C33, C36, C37, C38, C40, C41, C43, C45, C48, C49, C54, C57 29 Wurth Elektronik 860020372003 DigiKey Mouser
C6, C9, C16, C25 4 Wurth Elektronik 860020374012 DigiKey Mouser
C7, C21, C51, C52, C58 5 Wurth Elektronik 860020372006 DigiKey Mouser
C46, C47, C55, C56 4 Wurth Elektronik 860020372004 DigiKey Mouser
C53, C60 2 Wurth Elektronik 860020373010 DigiKey Mouser
C4, C18, C22, C28, C29, C34, C35, C42, C50, C59 10 Wurth Elektronik 860020372001 DigiKey Mouser
C27, C44 2 Wurth Elektronik 860020372002 DigiKey Mouser
C20, C23 2 Wurth Elektronik 860020672006 DigiKey Mouser
C39 1 Wurth Elektronik 860020672007 DigiKey Mouser
S1, S3 2 Alps SSSF112500 Mouser
Full BOM Mouser

If parts are not available or different selection is preferred, you can use the values in the Original Parts section to perform a parametric search.

Related Links

References

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