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4 Hardware Overview .........................................................................................................................51
5 System Hardware Information........................................................................................................59
System Level Functional Diagram..........................................................................................................60
Processor Board (MSMT329) ................................................................................................................61
Functional Diagram..................................................................................................................61
Memory Subsystem Description...............................................................................................62
Address Resources ...................................................................................................................64
Board Layout............................................................................................................................65
I/O Expansion Board (MSMT330).........................................................................................................66
Functional Diagram..................................................................................................................67
I/O Addresses...........................................................................................................................68
DMA Channels.........................................................................................................................69
Board Layout............................................................................................................................69
Component Descriptions..........................................................................................................73
I/O Connector Board (MSMT328) .........................................................................................................76
Board Layout............................................................................................................................76
Flash EPROM ..........................................................................................................................78
LCD Board (MPCBD20)........................................................................................................................79
Power Distribution Board (MSMT331 or MSMT385) ..........................................................................79
Side 1 .......................................................................................................................................79
Side 2 .......................................................................................................................................80
Service Notice..........................................................................................................................82
AC Input Wiring.....................................................................................................................................83
Internal RAID Section (MESAN20).......................................................................................................84
Assembly Layout......................................................................................................................84
Cable Routing and Pinouts.......................................................................................................85
Bus Display Jumper .................................................................................................................86
Service Notice..........................................................................................................................86
Power Supplies (MPWS139)..................................................................................................................87
Monitors .................................................................................................................................................89
Intruder Alert..........................................................................................................................................90
Peripherals..............................................................................................................................................92
CD-ROM Drives......................................................................................................................92
2 GB Fixed Disk Drive (CDSK094) ........................................................................................94
Combo Drive (MESAM86)......................................................................................................95
6 Accessing the System........................................................................................................................97
Servicing Restrictions.............................................................................................................................97
Opening the Base Unit............................................................................................................................97
Avoiding Electrostatic Discharge...........................................................................................................98
Closing the Base Unit.............................................................................................................................99
7 Upgrading the System ....................................................................................................................101
Servicing Restrictions...........................................................................................................................101
Adding Memory ...................................................................................................................................101
Adding Option Boards..........................................................................................................................104
Assigning Resources for Option Boards ................................................................................105
Adding Internal SCSI Devices..............................................................................................................108
Adding External SCSI Devices.............................................................................................................110
Understanding Cable Lengths ................................................................................................110
Connecting the Device ...........................................................................................................111
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