Intergraph DHAF02430 System Reference Manual
Rack-Mount Workstation/Server
System Reference
November 1997
DHAF02430
Warranties and Liabilities
The information and the software discussed in this document are subject to change without notice and should not
be considered commitments by Intergraph Corporation. Intergraph Corporation assumes no responsibility for any
errors in this document.
The software discussed in this document is furnished under a license and may be used or copied only in accordance
with the terms of the license. No responsibility is assumed by Intergraph for the use or reliability of software on
equipment that is not supplied by Intergraph or its affiliated companies.
All warranties given by Intergraph Corporation about equipment or software are set forth in your purchase
contract, and nothing stated in, or implied by, this document or its contents shall be considered or deemed a
modification or amendment of such warranties.
Copyright
1997, Intergraph Corporation including this documentation, and any software and its file formats and audiovisual displays described herein; all rights reserved; may only be used pursuant to the applicable software license
agreement; contains confidential and proprietary information of Intergraph and/or other third parties which is
protected by copyright, trade secret and trademark law and may not be provided or otherwise made available
without prior written authorization.
Restricted Rights Legend
Use, duplication, or disclosure by the United States Government is subject to restrictions as set forth in subdivision
(c)(1)(ii) of the rights in technical data and computer software clause at DFARS 252.227-7013.
Unpublished rights reserved under the copyright laws of the United States.
Intergraph Corporation, Huntsville AL 35894-0001
Trademarks
Intergraph and the Intergraph logo are registered trademarks, and StudioZ, RenderRAX, and InterServe are
trademarks, of Intergraph Corporation.
Other brands and product names are trademarks of their respective owners.
FCC/DOC Compliance
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part
15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference
when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate
radio frequency energy. If the equipment is not installed and used in accordance with the instruction manual, it
may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will
be required to correct the interference at his own expense.
This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus set out in
the Radio Interference Regulations of the Canadian Department of Communications.
Warnings
To reduce the risk of electrical shock, do not attempt to open the equipment unless instructed. Do not use a tool for
purposes other than instructed.
There is a danger of explosion if the battery is incorrectly replaced. Replace the battery only with the same or
equivalent type as recommended by the manufacturer. Dispose of used batteries according to the manufacturer’s
instructions.
Notes
Read all operating instructions before using this device. Keep these instructions for future reference. Follow all
warnings on the device or in the operating instructions.
Contents
Introduction.....................................................................................................................................ix
Document Conventions.....................................................................................................................ix
Additional System Information .........................................................................................................ix
1 Accessing the System....................................................................................................................1
Tools..................................................................................................................................................1
Opening the Base Unit .......................................................................................................................1
Protecting Against Electrostatic Discharge .........................................................................................2
Removing the Face Plate....................................................................................................................2
Attaching the Face Plate.....................................................................................................................2
Closing the Base Unit......................................................................................................................... 2
2 Servicing the System ....................................................................................................................3
Peripheral Drives ...............................................................................................................................4
Floppy Disk Drive................................................................................................................4
CD-ROM Drive....................................................................................................................6
Vertical Bay Disk Drives...................................................................................................... 8
Internal Bay Disk Drives ....................................................................................................11
Power Supply...................................................................................................................................12
Riser Card........................................................................................................................................13
P6 Bus Termination Card.................................................................................................................15
Processor Module for MSMT353 and MSMT359.............................................................................15
Processor Module for MSMT378......................................................................................................15
System Board...................................................................................................................................16
Fans.................................................................................................................................................17
Power Supply Fan...............................................................................................................17
System Fans.......................................................................................................................18
Internal Bay Fan.................................................................................................................18
Vertical Bay Fan................................................................................................................. 18
Speaker............................................................................................................................................19
Lithium (CMOS/Clock) Battery .......................................................................................................19
AC Line Filter..................................................................................................................................21
Keyswitch and LEDs........................................................................................................................21
v
3 Upgrading the System................................................................................................................23
Adding Memory...............................................................................................................................23
Adding Processors to MSMT353 or MSMT359................................................................................24
Single to Dual Upgrade ......................................................................................................24
Dual to Quad Upgrade........................................................................................................25
Adding Processors to MSMT378......................................................................................................26
Single to Dual Upgrade ......................................................................................................26
Pentium Pro to Pentium II Upgrade ....................................................................................26
Adding Option Boards .....................................................................................................................28
Installing an Option Board ................................................................................................. 28
Assigning System Resources...............................................................................................29
Adding Internal SCSI Drives ...........................................................................................................31
vi
Adding External SCSI Drives ..........................................................................................................34
SCSI Cable Guidelines.......................................................................................................35
Connecting the Drive..........................................................................................................35
Disabling Sync Negotiation................................................................................................35
4 System Hardware Overview and Specifications........................................................................37
Functional Diagram .........................................................................................................................37
System Board Combinations.............................................................................................................38
System Board Feature Summary....................................................................................................... 38
System Boards Component Specification..........................................................................................39
Riser Card Features..........................................................................................................................39
System Model Number.....................................................................................................................40
Specifications...................................................................................................................................41
Optional Hardware...........................................................................................................................42
5 System Board MSMT353 and MSMT359 ..................................................................................43
Connectors....................................................................................................................................... 43
Jumpers..............................................................................................................................44
Cable Routing and Pinouts .................................................................................................46
Sound Controller.............................................................................................................................. 49
Address Resources for MSMT353 and MSMT359............................................................................50
DMA Channels .................................................................................................................. 50
Input/Output Addresses ......................................................................................................50
Memory Address Map........................................................................................................50
PCI to ISA Bus Interrupt Mapping .....................................................................................51
PCI Bus Configuration Space .............................................................................................51
ISA Bus..............................................................................................................................52
6 System Board MSMT378............................................................................................................53
Connectors....................................................................................................................................... 53
Jumpers..............................................................................................................................54
Cable Routing and Pinouts .................................................................................................55
Sound Controller.............................................................................................................................. 58
Address Resources........................................................................................................................... 59
DMA Channels .................................................................................................................. 59
Input/Output Addresses ......................................................................................................59
Memory Address Map........................................................................................................59
PCI to ISA Bus Interrupt Mapping .....................................................................................60
ISA Bus..............................................................................................................................60
7 External Port Pinouts..................................................................................................................61
MIDI/Game .....................................................................................................................................62
Parallel ............................................................................................................................................ 62
SCSI................................................................................................................................................63
Serial (COM)................................................................................................................................... 63
Ethernet 10/100 Base-TX.................................................................................................................64
Mouse and Keyboard........................................................................................................................64
Universal Serial Bus (for MSMT378 system bo ard)............................................................................ 65
Video (for MSMT353 or MSMT359 system board)..........................................................................65
VGA In (for MSMT353 or MSMT359 system board).......................................................................66
Video Out (for MSMT378 system board)..........................................................................................67
VGA In (for MSMT378 system board).............................................................................................67
vii
8 Riser Card MSMT463.................................................................................................................69
Expansion Slots ...............................................................................................................................69
Internal SCSI Controller ..................................................................................................................69
SCSI Connector ...............................................................................................................................70
Power Connector..............................................................................................................................70
Graphics Option Card Slot Assignments ..........................................................................................70
9 Peripherals ..................................................................................................................................73
SCSI CD-ROM Drive (CDSK178)...................................................................................................74
Disk Drives......................................................................................................................................74
CDSK111 (1 GB)...............................................................................................................75
CDSK094 (2 GB)...............................................................................................................76
CDSK098 (4 GB)...............................................................................................................76
CDSK123, CDSK164, CDSK165, CDSK166, CDSK167 (4 GB)........................................77
Floppy Disk Drive (CDSK146)......................................................................................................... 77
Combo Drive (MESAM86)..............................................................................................................78
EIDE CD-ROM Drive (CDSK177) ..................................................................................................79
10 Power Supply and Fans............................................................................................................ 81
Power Supply (MPWS145)...............................................................................................................81
DC Output Specifications...................................................................................................81
Cable Connectors ...............................................................................................................82
P1 Pinout............................................................................................................................82
P2 - P7 Pinout ....................................................................................................................83
P9 Pinout............................................................................................................................83
P10 Pinout..........................................................................................................................83
System Fans.....................................................................................................................................83
Power Supply Fan (MCBLZ52 or CFAN1170)...................................................................83
System Fans (MCBLY690).................................................................................................83
Vertical Bay Disk Drive Fan (MCBLY690)........................................................................84
Internal Bay Disk Drive Fan (MCBLY690) ........................................................................84
Index...............................................................................................................................................85
viii
Introduction
This System Reference provides the information necessary to service the following systems:
u
TDZ-425 RAX and TDZ-612 RAX workstations
u
StudioZ RenderRAX
u
InterServe 615R and 625R servers
Document Conventions
ix
Bold
Commands, words, or characters that you key in literally.
Italic Variable values that you supply, or cross-references.
Monospace
SMALL CAPS Key names on the keyboard, such as D, ALT or F3. Names of files and
Output displayed on the screen.
directories. You can type filenames and directory names in the dialog boxes
or the command line in lowercase unless directed otherwise.
CTRL+D Press a key while simultaneously pressing another key; for example, press
CTRL and D simultaneously.
Additional System Information
A System Setup is shipped with each system, and provides detailed information about:
u
Configuring the operating system and associated system software
u
Using the system
u
Using the AMIBIOS Setup program
u
Installing system software
A System Introduction is delivered with the system, and provides information about:
u
Intergraph Support
u
System hardware features
u
Available hardware option
x
1 Accessing the System
This chapter lists hand tools and describes servicing restrictions, opening the base unit, avoiding
electrostatic discharge, removing and attaching the face plate, and closing the base unit.
This system features a telescoping chassis that provides increased serviceability and access to internal
components. The telescoping section, to which the system board is mounted, is secured by five screws
and slides out from the rear.
NOTE “Right side” and “left side” are as seen from the front of the base unit.
CAUTION Follow all warnings and cautions in servicing instructions. Personal injury and damage to equipment
can occur if documented procedures are not followed.
CAUTION Use an antistatic wrist strap for all servicing procedures to avoid the possibility of electrostatic
discharge.
Tools
1
You will need the following tools to service the system:
u
Antistatic wrist strap
u
Quarter-inch nutdriver
u
No. 1 and No. 2 Phillips screwdrivers
u
Three-sixteenth-inch nutdriver
u
Five-sixteenth-inch or 8 mm nutdriver
u
Small single-slot screwdriver
Opening the Base Unit
CAUTION Shut the system down and turn the system power off. Use caution to avoid injury when removing
covers and other hardware.
CAUTION If the system is installed in a free-standing rack, ensure front and side stabilizers are fully extended.
To open the base unit:
1. Remove the screws that secure the face plate to the rack.
2. Slide the system out of the rack until it locks in the extended position.
3. Remove the following eight screws that secure the cover to the chassis: One at right and left top
corners of face plate; two at top, back of cover; and two at right and left sides, back of cover.
4. Slide the cover back about an inch, then lift the cover off.
5. Attach grounding clip from antistatic wrist strap to bare metal.
2
Protecting Against Electrostatic Discharge
Sensitive components inside the base unit can be damaged by static electricity. To protect against this
possibility, take the following precautions when working with the system’s internal components.
u
Touch the bare metal of the base unit to ensure it and your body are at the same electric potential.
u
Handle all printed circuit boards as little as possible and by the edges only. Leave new parts in
their protective packaging until you install them.
u
Use a disposable or reusable antistatic wrist strap when servicing or upgrading the system. Once
a disposable wrist strap is used, it cannot be used again. A reusable antistatic wrist strap can be
attached to any bare metal part of the base unit. The metal conductor bead in the elastic sleeve of
reusable antistatic straps must contact bare skin.
Removing the Face Plate
To remove the face plate:
1. Remove the cover.
2. Remove one lower screw on each side of system front that secures handle to the base unit.
3. Remove the six screws that secure face plate to the base unit.
4. Pull the face plate toward you to remove it. Note how the bottom lip of the face plate attaches to
the cutout in front of the power supply.
A ttaching the Face Plate
To attach the face plate:
1. Push the face plate onto the base unit. Ensure that the top part of the lip at bottom slides over the
cutout in front of the power supply.
2. Adjust the face plate as needed to ensure all components are flush.
3. Secure the face plate to the base unit.
4. Close the cover.
Closing the Base Unit
CAUTION After servicing the system, always replace the covers that were removed. The covers ensure the
system maintains proper air flow, so internal components do not overheat and fail. The covers also
ensure that electromagnetic interference (EMI) emissions remain below the standard requirements.
To close the base unit:
1. Remove the antistatic wrist strap from the base unit.
2. Replace the cover.
3. Slide the base unit into the rack.
4. Secure the base unit with screws at each corner of the face plate.
2 Servicing the System
y)
This chapter describes how to replace the standard parts within the system.
NOTE Refer to Chapter 1 for details on opening the system and protecting against electrostatic discharge.
CAUTION Follow all warnings and cautions in servicing instructions. Personal injury and damage to equipment
can occur if documented procedures are not followed.
CAUTION Use an antistatic wrist strap for all servicing procedures to avoid the possibility of electrostatic
discharge.
The following shows the location of major parts in the system. Unit with MSMT353 system board is
shown.
3
Internal Drive Bay
Riser Card Brace
Riser Card
System Board
Horizontal Drive Bay
Disk Drive Fan
Vertical Drive Bay
Processor Module
or P6 Bus
Termination Card
(MSMT353 or
MSMT359 onl
Memory
Floppy Drive
Power Supply
PCI Card Guide
4
e
(
)
Peripheral Drives
Floppy Disk Drive
To replace the floppy disk drive:
1. Disconnect the power cable and floppy cable from the drive as shown in the following figure.
Note the position of the red stripe on the floppy cable.
2. Remove the two screws securing the drive bracket to the power supply.
Power Cabl
Floppy Cable
Screw
One each side
3. Remove the four screws securing the bracket to the drive as shown in the following figure.
Screws (Two
each side)
4. Attach the new drive to the bracket and attach it to the power supply. Connect the power cable
and floppy cable. Ensure the red stripe on the floppy cable is oriented correctly.
5
5. Close the base unit.
6
CD-ROM Drive
Depending on system options, the CD-ROM drive may be a SCSI drive or an EIDE drive. Refer to
Chapter 9, “Peripherals,” for details.
To replace the CD-ROM drive:
1. Disconnect the power cable, data cable, and audio cable from the CD-ROM drive as shown in the
following figure. Note the position of the stripe on the data cable.
2. Remove the screws securing the horizontal bay to the base unit.
Screw
Horizontal Bay
Audio
Cable
Data Cable
Screw
Power Cable
3. Remove the four screws securing the drive to the drive bay as shown in the following figure.
Screws (Two
each side)
4. Set the SCSI ID on a new SCSI drive to the same ID as the old drive. On a new EIDE drive, set
the mode select header to “master.” Refer to Chapter 9, “Peripherals,” for details.
7
5. Attach the new drive to the horizontal bay and attach it to the base unit. Connect the power
cable, data cable, and audio cable. Ensure the stripe on the data cable is oriented correctly.
6. Close the base unit.
8
r
Vertical Bay Disk Drives
If Kingston removable disk modules are installed in the system, refer to the Kingston documentation
for disk drive or module replacement instructions.
To replace drives in the vertical bay:
1. Remove the disk drive fan by removing the screw at the top of the vertical bay and disconnecting
the fan power cable from the inline connector.
Screw
Fan
Fan Power Cable
In-line Connecto
2. Disconnect the power cable and SCSI cable from the disk drive.
3. Remove the screws securing the disk drive at the top of the vertical bay as shown in the following
figure.
Screws
9
4. Pull out the black disk drive tray through the front of the system. The disk drive is attached to
the tray.
10
5. Remove the slot filler by removing screws as shown in the following figure; then remove the four
screws securing the disk drive to the tray.
Screws
Slot Filler
Drive Tray
Screws (Two
each side)
6. Set the SCSI ID on the new disk drive to the same SCSI ID as on the old disk drive.
7. Attach the new disk drive to the tray and slide it into the vertical bay.
8. Secure the drive to the bay.
9. Connect the SCSI cable and power cable to the disk drive.
10. Replace the disk drive fan and connect the fan power cable.
11. Close the base unit.
Internal Bay Disk Drives
To replace drives in the internal bay:
1. Disconnect the SCSI cable and power cable from the disk drive as shown in the following figure.
2. Disconnect the fan cable. Note the location where the fan cable connects to the system board.
3. Remove the two screws that secure the internal bay to the base unit.
4. Slide the internal bay toward the front until it disengages; then lift it out of the system.
Screws
11
Internal
Bay
SCSI
Cable
Power
Cable
Screws
Fan
Cable
5. Remove the screws that secure the disk drive to the internal bay. Two screws are on top, as
shown, and two are on the bottom.
6. Remove the disk drive from the bay.
7. Set the SCSI ID on the new disk drive to the same SCSI ID as on the old disk drive.
8. Attach the new disk drive to the internal bay.
9. Place the internal bay into the base unit, and slide it toward the rear until it engages.
10. Attach the bay to the base unit.
11. Connect the SCSI cable and power cable to the disk drive.
12. Connect the fan cable to the system board.
13. Close the base unit.
12
Power Supply
To replace the power supply:
1. Open the unit and remove the face plate as described in Chapter 1.
2. Disconnect all power cables from the internal devices (riser card, floppy disk drive, internal disk
drive bay, vertical and horizontal disk drive bays, and speaker).
Power Supply
Screw
Riser Card Brace
3. Disconnect the AC power cable from the rear of the power supply. (The AC power cable is
routed from the line filter).
4. Remove the floppy drive and the horizontal drive bay. Refer to the respective procedures earlier
in this chapter.
5. Disconnect the speaker cable and remove the speaker. (Any system with the MSMT378 system
board does not have a speaker). Refer to the “Speaker” procedure later in this chapter.
6. Remove the screw securing the power supply to the base unit.
7. Pull the power supply forward until it disengages; lift up to remove it.
8. Place the new power supply into the base unit, and push it forward until it engages.
9. Secure the power supply to the base unit.
10. Connect the power cables to the internal devices.
11. Connect the AC power cable to the power supply.
12. Attach the floppy drive and horizontal drive bay.
13. Install the speaker and connect the speaker cable.
14. Install the face plate and cover.
Riser Card
To replace the riser card:
1. Open the base unit as described in Chapter 1.
2. Remove all installed option boards. If ISA boards are installed, remove the internal disk drive
bay, and then remove the ISA cards. Refer to “Internal Bay Disk Drives” earlier in this chapter.
3. Disconnect the SCSI cable and power cable from the riser card.
13
4. Remove the screw that secures the riser card brace to the top of the PCI card guide.
5. Loosen the two screws that secure the riser card brace to the PCI card guide, slide the card guide
back, and remove the card guide. Note how the PCI card guide fits over the lip on the rear of the
power supply.
Riser Card
Riser Card
Screws
PCI Card
Guide
Screws
Screw
Power
Supply
14
(
)
6. Remove the two screws securing the riser card brace to the back of the system.
Screws
Riser Card
PCI Card Slots
Riser Card
Brace
7. Remove the two screws that secure the riser card to the brace.
8. Remove the riser card brace.
9. Grasp the riser card firmly on both ends, and carefully pull straight up until the card disengages.
10. Insert the new riser card into the system board connector. Press firmly over the center of the PCI
connectors to fully seat the card.
CAUTION Do not rock the riser card back and forth; pins inside the connector may be damaged as a result.
Press firmly so the card connector slides evenly into the slot.
11. Install the riser card brace, and install the two screws securing the card to the brace.
12. Place the PCI card guide on the two screws attached to the riser card. Slide the guide over the lip
on the rear of the power supply, then tighten the screws.
13. Attach the top of the riser card brace to the PCI card guide.
14. Replace the two screws securing the rear of the riser card brace to the back of the system.
15. Connect the power and SCSI cable to the riser card.
16. Replace any PCI or ISA option boards, and the internal drive bay (if removed).
17. Close the base unit.
P6 Bus Termination Card
The P6 bus termination card, MSMT311, is used only in systems with the MSMT353 or MSMT359
system board that has one or two processors. Refer to Chapter 5, “System Board MSMT353 and
MSMT359,” for details.
To replace the P6 Bus termination card:
1. Open the base unit.
2. Remove the installed PCI cards. The termination card is attached to the system board adjacent to
the memory modules.
3. Remove the screws securing the termination card to the system board.
4. Carefully disengage the card from the system board and remove it.
5. Attach the new card to the system board, and secure the card with the screws.
6. Replace the PCI cards.
7. Close the base unit.
15
Processor Module for MSMT353 and MSMT359
The replacement processor module, MSMT364 or MSMT310, for the MSMT353 and MSMT359
system board, includes pre-installed voltage regulator modules(VRMs) and processors.
To replace the processor module:
1. Open the base unit.
2. Remove the installed PCI cards. The processor module is attached to the system board adjacent
to the memory modules.
3. Remove the left VRM to access mounting screw.
4. Remove the screws securing the processor module to the system board.
5. Carefully disengage the module from the system board and remove it.
6. Attach the new processor module to the system board, and secure it with the screws.
7. Reinstall the left VRM.
8. Replace the PCI cards.
9. Close the base unit.
Processor Module for MSMT378
The Pentium Pro and Pentium II processors for the MSMT378 system board are housed in plastic
processor modules, which have heat sinks attached to one side. When a Pentium II module is
installed into an S1 slot, the heat sinks are supported at the bottom by a black plastic bar, which runs
between the two bottom-most rows of heat sink fins. The support bar is connected to a support
assembly via four posts.
16
WARNING Setting processor voltage incorrectly may destroy the processor! Refer to Chapter 6, “System
Board MSMT378,” for details.
To replace the processor module:
1. Remove ISA cards if installed.
NOTE Pentium Pro processor modules do not require heat sink support.
2. Remove the top section of the heat sink support, if necessary. The plastic support bar has a tab
on each end. Press both tabs inward, towards each other, while using a pulling motion to pull the
bar away from the heat sink fins. The support assembly is permanently connected to the system
board, and need not be removed.
3. Remove the processor module. Grasp both tabs on the top corners of the processor module and
press them inward, towards each other. Then pull the entire module upward, keeping the tabs
pressed inward. Heat sinks are permanently connected to the module, and need not be removed.
4. If necessary, set the frequency for the new processor by adjusting jumpers J47 through J50. Refer
to Chapter 6, “System Board MSMT378,” for more information.
5. Align the new processor module over the S1 slot and firmly press it down into the slot.
6. If necessary, replace the top section of the heat sink support. Gently push the plastic support bar
toward the four posts on the heat sink support assembly, until the bar snaps into place.
7. Reinstall the ISA cards.
System Board
Replacement system boards contain pre-installed voltage regulator modules and processors. However,
you must swap the memory modules and P6 bus termination card (on MSMT353 or MSMT359) or
processor module from the old system board to the new one.
NOTE Steps 10 and 14 apply only to the the MSMT353 or MSMT359 system board.
The telescoping (modular) chassis makes it easier for you to replace the system board. You must
remove the unit from the rack before replacing the system board.
WARNING Two people must remove the unit from the rack. Failure to do so can result in personal injury
and equipment damage. The unit is heavy and difficult to handle.
To replace the system board:
1. Disconnect all external cables from the unit and remove it from the rack. Use a helper!
2. Open the base unit as described in Chapter 1.
3. Remove the riser card and any installed option cards as described earlier in this chapter.
4. Remove the five screws securing the telescoping section to the base unit. There are two screws
on the right and three on the left.
5. Pull the telescoping section toward you a few inches.
6. Disconnect all internal cables attached to the system board. Note the locations where the cables
are connected.
7. Remove the telescoping section from the base unit.
8. Remove the jackscrews from the parallel and serial ports, and from the three audio jacks.
9. Remove the memory modules from the system board, and place them on an antistatic surface.
10. Remove the processor module (for quad processor systems) or the P6 bus termination card (for
dual processor systems) from the MSMT353 or MSMT359 system board as described earlier in
this chapter.
11. Remove the eight screws securing the system board to the telescoping section.
12. Lift the system board out of the unit.
13. Install the new system board and secure it with the eight screws.
14. Attach the processor module or P6 bus termination card to the MSMT353 system board.
15. Install the memory modules on the system board.
16. Connect the internal cables to the system board. If you need help identifying cable connections,
refer to Chapter 5 for the MSMT353 or MSMT359 system board or Chapter 6 for the MSMT378
system board.
17. Secure the parallel and serial ports and audio jacks with the jackscrews.
18. Slide the telescoping section into the base unit. Ensure that all tabs engage correctly.
19. Install the five screws that secure the telescoping section to the base unit.
20. Install the riser card and option cards, and connect the internal SCSI cable to the riser card.
17
21. Reinstall the unit in the rack. Use a helper!
22. Close the base unit and reconnect the external cables.
Fans
Refer to Chapter 10, “Power Supply and Fans,” for details on fans.
NOTE Airflow in the system is front to back. Arrows on the fan indicate airflow direction and rotation.
Ensure that you install fans with arrows pointing to the back of the system.
Power Supply Fan
To replace the power supply fan:
1. Open the base unit.
2. Remove the power supply as described earlier in this chapter.
3. Disconnect the fan power cable.
4. Note the airflow direction of the fan, and then remove the four screws securing the fan to the
power supply housing.
5. Install the new fan on the power supply housing.
6. Reinstall the power supply and connect the fan power cable.
7. Close the base unit.
18
System Fans
To replace a system fan:
1. Open the base unit.
2. Remove the power supply as described earlier in this chapter.
3. Disconnect the fan power cables.
4. Note the airflow direction of the fan, and then remove the four screws securing the fan to the
power supply housing.
5. Install the new fan on the power supply housing and connect the fan power cable.
6. Reinstall the power supply and close the base unit.
Internal Bay Fan
To replace the internal disk drive bay fan:
1. Open the base unit.
2. Disconnect the internal disk drive fan power cable.
3. Remove the four screws securing the fan to the internal disk drive bay at the rear of the unit.
Note the airflow direction of the fan.
Fan Screws
4. Install the new fan and connect the fan power cable.
5. Close the base unit.
Vertical Bay Fan
To replace the vertical disk drive bay fan:
1. Open the base unit.
2. Disconnect the fan power cable and remove the screw from the top of the fan bracket. For an
illustration, refer to the “Vertical Bay Disk Drives” procedure earlier in this chapter.
3. Remove the fan from the fan bracket. Note the orientation of the fan.
4. Install the new fan on the bracket and install the bracket on the vertical disk drive bay.
5. Connect the fan power cable and close the base unit.
Speaker
A speaker is not installed in systems with the MSMT378 system board.
To replace the speaker:
1. Remove the face plate. Six screws on the front and one screw on each lower side secure the face
2. Remove the two screws securing the floppy drive to the power supply, and set the drive aside
3. Note the position of the red wire and disconnect the speaker cable connector from the system
4. Remove the screws that secure the speaker retaining ring to the power supply, and remove the
5. Place the retaining ring on top of the new speaker, insert the assembly into the power supply
6. Connect the speaker cable.
7. Attach the floppy disk drive.
19
plate to the system.
carefully.
board.
ring and speaker. Access holes are provided on top of the power supply housing.
housing, and secure the ring with the screws.
8. Attach the face plate.
Lithium (CMOS/Clock) Battery
On the MSMT353 or MSMT359 system board, the battery is located to the right of the riser card,
near the back. On the MSMT378 system board, the battery is located near the memory modules on
the left side.
WARNING There is a danger of explosion if the battery is incorrectly replaced.
WARNING Replace the battery with the same or equivalent type only, as recommended by the manufacturer.
Dispose of used batteries according to the manufacturer’s instructions.
To replace the battery (on MSMT353 or MSMT359 system board):
1. Remove the ISA cards, if installed. (You must remove the internal drive bay if ISA cards are
installed. Refer to “Installing an Option Board ” in Chapter 3 for details).
2. Note the positive orientation of the battery. Carefully remove the discharged battery by grasping
it firmly and lifting upward.
3. Install the new battery in the same orientation as the old battery.
4. Install the ISA cards and install the internal drive bay.
5. Dispose of the battery according to the manufacturer’s instructions.
20
Battery
ISA Card Slots
To replace the battery (on MSMT378 system board):
1. Remove any PCI cards that interfere with access to the battery.
Battery
2. Carefully remove the discharged battery by grasping it firmly and lifting upward.
3. Install the new battery in the same orientation as the discharged battery.
4. Replace the PCI cards that you removed in step 1 above.
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