
vi
Adding Peripherals ......................................................................................................34
Peripheral Device Locations...........................................................................35
Installing Devices in the Drive Bays...............................................................36
Adding External SCSI Drives ......................................................................................38
SCSI Cable Length Guidelines.......................................................................39
SCSI Cable Quality Guidelines.......................................................................39
SCSI ID Guidelines........................................................................................40
SCSI Termination Guidelines for External Devices ........................................40
Connecting the External SCSI Drive ..............................................................40
Changing SCSI Host Adapter or Device Settings............................................41
Disabling SCSI Sync Negotiation...................................................................41
4 System Hardware...................................................................................................43
Hardware Overview.....................................................................................................45
Functional Diagram .....................................................................................................46
Systems with a 300 Watt Power Supply (MPWS175)......................................46
Systems with 550 Watt Power Supplies (MPWS139)......................................47
LCD Board (MSMT344)..............................................................................................48
Board Layout..................................................................................................49
Cable Connectors...........................................................................................50
Cable Routing and Pinouts .............................................................................50
Power Distribution Board (MSMT498 or MSMT499)..................................................51
Board Layout..................................................................................................51
Cable Routing and Pinouts .............................................................................52
AC Section (MESAN590)............................................................................................55
RAID Disk Drive Section (MESAN52)........................................................................56
Assembly Layout............................................................................................56
Cable Routing and Pinouts .............................................................................57
Channel Module.............................................................................................58
SAF-TE Card.................................................................................................58
Jumper Settings..............................................................................................58
Power Supplies............................................................................................................59
300 Watt Power Supply (MPWS175)..............................................................59
550 Watt Power Supplies (MPWS139)...........................................................60
Operating Characteristics ...............................................................................61
Connector Pinout ...........................................................................................62
Cooling Fans and Temperature Sensors .......................................................................63
5 System Board ..........................................................................................................65
Slots and Sockets.........................................................................................................66
Cable Routing and Pinouts...........................................................................................67
Jumper Connectors ......................................................................................................71
External Ports ..............................................................................................................73