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                      Á Ð Ð Å Î Ä É Ø    A

               C O P R O C E S S O R    B O A R D 

                     I N S T A L L A T I O N 



     NOTE:“ Thå instructionó iî thió documenô werå writteî aô �
     á verù elementarù level®   Aó á result¬  highlù experi�
     enceä technicianó maù becomå annoyeä aô whaô seemó likå �
     overkill®   Buô BÅ AWARÅ thaô therå arå severaì  placeó �
     wherå  overconfidencå  caî seriouslù damagå  thå  Micrï �
     Decision®   Sucè sectionó havå beeî markeä witè  appro�
     priatå "Caution¢ flags.




A.1     Qualified Installers . . . . . . . . . . . . . . . .    1
A.2     Which Micro Decisions Can Use the Coprocessor? . . .    2
A.3     What Tools Do You Need?. . . . . . . . . . . . . . .    2
A.4     What's in the Box. . . . . . . . . . . . . . . . . .    2
A.5     Hardware Installation Overview . . . . . . . . . . .    3
A.6     Park Hard Disks! . . . . . . . . . . . . . . . . . .    3
A.7     Disconnect All Cables. . . . . . . . . . . . . . . .    3
A.8     Remove the Chassis Cover . . . . . . . . . . . . . .    3
A.9     Remove the Power Supply. . . . . . . . . . . . . . .    4
A.10    Remove the Disk Drives . . . . . . . . . . . . . . .    5
A.10.1    Remove The Disk Drive Cables . . . . . . . . . . .    5
A.10.2    Drive Removal. . . . . . . . . . . . . . . . . . .    6
A.11    Remove the Motherboard . . . . . . . . . . . . . . .    7
A.11.1    Disconnect a Few More Wires. . . . . . . . . . . .    8
A.11.2    Motherboard Removal. . . . . . . . . . . . . . . .    9
A.12    Install the 40 Pin Header. . . . . . . . . . . . . .   11
A.13    Replace Motherboard. . . . . . . . . . . . . . . . .   12
A.14    Installing the Expansion Board . . . . . . . . . . .   14
A.15    Connecting the Expansion Board to the 40 Pin Header.   15
A.15.1    MD-3 Motherboard by Kohjinsha. . . . . . . . . . .   15
A.15.2    MD-3 Motherboard "Made in Korea" . . . . . . . . .   16
A.15.3    MD-11. . . . . . . . . . . . . . . . . . . . . . .   16
A.15.4    MD-3's Again . . . . . . . . . . . . . . . . . . .   18
A.16    Replace Disk Drives. . . . . . . . . . . . . . . . .   18
A.17    Installing the Coprocessor Board . . . . . . . . . .   19
A.18    Replace Power Supply . . . . . . . . . . . . . . . .   20
A.19    Replace the Cover and Cables . . . . . . . . . . . .   20
A.20    Check-out Time . . . . . . . . . . . . . . . . . . .   21



   Copyrighô (c© 198´ bù Morrow¬ Inc®  Worlä Rightó Reserved.
.Pa
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                 L I S T    O Æ    F I G U R E S
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.Cp3
A-1   Hardware Block Diagram . . . . . . . . . . . . . . . .    1
A-2   Bottom of Micro Decision Chassis . . . . . . . . . . .    4
A-3   Korean Assembled Motherboard Witè 40-Piî Header. . . .    5
A-4   Disk drive mounting bracket, left side . . . . . . . .    6
A-5   L shaped brackets securing drives. . . . . . . . . . .    6
A-6   Revision A chassis back panel. . . . . . . . . . . . .    7
A-7   Revision B chassis back panel. . . . . . . . . . . . .    8
A-8   Revision C chassis back panel. . . . . . . . . . . . .    8
A-9   Motherboard removal, Revision A and B chassis. . . . .   10
A-10  Motherbaord removal, Revision C chassis. . . . . . . .   10
A-11  40-pin header orientation. . . . . . . . . . . . . . .   11
A-12  MD-11 fan wire connection to motherboard . . . . . . .   13
A-13  Expansion Board and cables . . . . . . . . . . . . . .   14
A-14  Installation of Expansion Board:  Kohjinsha MD-3 . . .   15
A-15  Connection of Expansion Board:  Korean MD-3. . . . . .   16
A-16  Assemblù oæ Expansioî Board¬ MD-11 . . . . . . . . . .   17
A-17  Installation of cables, Coprocessor Board. . . . . . .   20




               Ì É Ó Ô     Ï Æ    Ã Á Õ Ô É Ï Î S
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Parë harä diskó (MD-11)® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ®    3
Avoiä damagå tï motherboarä througè statiã dischargå ® ® ® ®    9
Inspecô solderinç oæ 40-piî headeò carefullù ® ® ® ® ® ® ® ®   12
Inspecô connectioî oæ poweò wireó tï Expansioî Boarä ® ® ® ®   14
Checë Expansioî Boarä ¯ motherboarä connectioî (MD-3)® ® ® .15,16
Inspecô connectioî betweeî cablå anä 40-piî headeò (MD-11© ®   17
Inspecô connectioî betweeî cablå anä Expansioî Boarä (MD-11©   17







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