Dell POWEREDGE 4300 User manual

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____________________
Information in this document is subject to change without notice.
© 1998 Dell Computer Corporation. All rights reserved.
Reproduction in any manner whatsoever without the written permission of Dell Computer Corporation is strictly forbidden.
Trademarks used in this text:
Dell , the DELL logo, and PowerEdge are registered trademarks and Dell OpenManage is a trademark of Dell Computer
Corporation;
IBM is a registered trademark of International Business Machines Corporation; Intel and Pentium are registered trademarks and MMX is a
trademark of Intel Corporation.
Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell
Computer Corporation disclaims any proprietary interest in trademarks and trade names other than its own.
September 1998 P/N 33667

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System Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Accessing the Interior of the System . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
System Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Advanced Expansion Subsystems . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Video Controller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Integrated SCSI Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
SCSI Hard-Disk Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
SCSI Configuration Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
SCSI ID Numbers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Device Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
PSPB and System Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
System Power Supplies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
PSPB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Pin Assignments for the PSPB Power Connectors . . . . . . . . . . . . 1-12
System Board Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
SCSI Backplane Board Layouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16
System Board Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17
Interrupt Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
DMA Channel Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19
Technical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20
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Initial User Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
External Visual Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Observing the Boot Routine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Internal Visual Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Eliminating Resource Conflicts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Running the Dell Diagnostics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Getting Help. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

vi
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POST Beep Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
System Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Alert Messages From Dell OpenManage HIP . . . . . . . . . . . . . . . . . . . . . . 3-13
SCSI Hard-Disk Drive Indicator Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
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Recommended Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Precautionary Measures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Computer Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Front Bezel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Control Panel Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Externally Accessible Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Front-Panel Inserts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Close-Out Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Reorienting the External Drive Cage . . . . . . . . . . . . . . . . . . . . . . . . 4-8
5.25- and 3.5-Inch Drives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Hard-Disk Drives in External Bay. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
Hard-Disk Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
SCSI Backplane Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
System Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
System Power Supply and PSPB Upgrade . . . . . . . . . . . . . . . . . . . . . . . . 4-17
Power-Supply Paralleling Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21
System Cooling Fans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22
Three-Fan Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23
Fan Power-Cable Bundle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24
Drive Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24
System Board Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25
System Board Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26
Expansion Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-27
Interior Support Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-29
DIMMs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-30
SEC Cartridge and Heat Sink Assembly . . . . . . . . . . . . . . . . . . . . . . . 4-31
Terminator Card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-33
System Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-34
System Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-35
System Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-36
Guide Bracket Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-37

vii
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System Setup Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
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)LJXUHV Figure 1-1. Computer Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Figure 1-2. Front-Panel Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Figure 1-3. Back-Panel Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Figure 1-4. Back/Right Side Internal View . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Figure 1-5. Opening the System Board Tray. . . . . . . . . . . . . . . . . . . . . . 1-6
Figure 1-6. DIMM Sockets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Figure 1-7. Power-Supply Paralleling Board. . . . . . . . . . . . . . . . . . . . . . 1-11
Figure 1-8. PSPB Power Connector PWR1. . . . . . . . . . . . . . . . . . . . . . 1-12
Figure 1-9. PSPB Power Connector PWR2. . . . . . . . . . . . . . . . . . . . . . 1-13
Figure 1-10. PSPB Power Connector PWR3. . . . . . . . . . . . . . . . . . . . . . 1-13
Figure 1-11. PSPB Power Connector FD. . . . . . . . . . . . . . . . . . . . . . . . . 1-13
Figure 1-12. PSPB Power Connector HD_B/P. . . . . . . . . . . . . . . . . . . . . 1-14
Figure 1-13. System Board Components . . . . . . . . . . . . . . . . . . . . . . . . 1-15
Figure 1-14. SCSI Backplane Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16
Figure 1-15. System Board Jumpers. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17
Figure 3-1. Hard-Disk Drive Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
Figure 4-1. Computer Cover Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Figure 4-2. Front Bezel Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Figure 4-3. Control-Panel Assembly Removal. . . . . . . . . . . . . . . . . . . . . 4-5
Figure 4-4. Drive Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Figure 4-5. Front-Panel Inserts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Figure 4-6. Externally Accessible Drive Removal . . . . . . . . . . . . . . . . . . 4-9
Figure 4-7. Drive-Mounting Rail Removal (Example). . . . . . . . . . . . . . . 4-10
Figure 4-8. Hard-Disk Drives in External Bay. . . . . . . . . . . . . . . . . . . . . 4-11
Figure 4-9. Hard-Disk Drive Removal . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
Figure 4-10. SCSI Backplane Board Removal . . . . . . . . . . . . . . . . . . . . . 4-14
Figure 4-11. Power Supply Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
Figure 4-12. Power Cable Connections — Single Power Supply . . . . . . 4-17
Figure 4-13. PSPB Tray Location in the System Chassis . . . . . . . . . . . . 4-18
Figure 4-14. PSPB Installation on the PSPB Tray . . . . . . . . . . . . . . . . . . 4-19
Figure 4-15. Power Cable Connections — Multiple Power Supplies . . . 4-20
Figure 4-16. Power-Supply Paralleling Board Removal . . . . . . . . . . . . . . 4-21
Figure 4-17. System Cooling Fans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22
Figure 4-18. Three-Fan Assembly Removal. . . . . . . . . . . . . . . . . . . . . . . 4-23
Figure 4-19. Drive Fan Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24
Figure 4-20. System-Board Fan Removal . . . . . . . . . . . . . . . . . . . . . . . . 4-25

viii
Figure 4-21. System Board Components . . . . . . . . . . . . . . . . . . . . . . . . 4-26
Figure 4-22. Expansion-Card Access Door . . . . . . . . . . . . . . . . . . . . . . . 4-27
Figure 4-23. Expansion Card Removal . . . . . . . . . . . . . . . . . . . . . . . . . . 4-28
Figure 4-24. Interior Support Panel Removal . . . . . . . . . . . . . . . . . . . . . 4-29
Figure 4-25. DIMM Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-30
Figure 4-26. DIMM Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-30
Figure 4-27. SEC Cartridge Release Latches . . . . . . . . . . . . . . . . . . . . . 4-31
Figure 4-28. SEC Cartridge and Heat Sink Removal . . . . . . . . . . . . . . . . 4-32
Figure 4-29. Terminator Card Removal . . . . . . . . . . . . . . . . . . . . . . . . . . 4-33
Figure 4-30. System Battery Removal . . . . . . . . . . . . . . . . . . . . . . . . . . 4-34
Figure 4-31. System-Board Assembly Removal . . . . . . . . . . . . . . . . . . . 4-35
Figure 4-32. System Board Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-36
Figure 4-33. Guide-Bracket Assembly Removal . . . . . . . . . . . . . . . . . . . 4-37
Figure A-1. System Setup Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
7DEOHV Table 1-1. DC Voltage and Current Ranges . . . . . . . . . . . . . . . . . . . . . 1-10
Table 1-2. Power Cable Connections From the PSPB . . . . . . . . . . . . 1-11
Table 1-3. Jumper Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
Table 1-4. Interrupt Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
Table 1-5. DREQ Line Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19
Table 1-6. Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20
Table 3-1. System Beep Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Table 3-2. System Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Table 3-3. Dell OpenManage HIP Alert Log Messages . . . . . . . . . . . 3-13
Table 3-4. SCSI Hard-Disk Drive Indicator Patterns . . . . . . . . . . . . . . 3-18
Table A-1. System Setup Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3

ix

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A prerequisite for using this manualto service Dell computersystems is a basic
knowledge of IBM®-compatible PCs and prior training in IBM-compatible PC
troubleshooting techniques. In addition to information provided in this manual
andinthe
User’sGuide
thatcamewiththesystem,Dellprovidesthe
Installation
and Troubleshooting Guide
for troubleshooting procedures and instructions on
using the Dell Diagnostics to test the computer system.
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italic type. These blocks are warnings, cautions, and notes, and they are used
as follows:
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NOTE: A NOTE provides helpful information about using the computer system.

System Overview 1-1
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Dell®PowerEdge®4300 systems are feature-rich, enterprise-class server
systems that use Intel®Pentium®II microprocessor(s) with MMX™technology
and incorporate high-performance PCI and AGP local buses as well as the ISA
expansion bus.
The PowerEdge 4300 systems have been designed for better serviceability
and increased reliability. The sliding system board tray allows easy access to
the system board for performing processor and memory upgrades. The Dell-
designed SCSI backplane board and hard-disk drive carriers eliminate the
extensive cabling and drive configuration usually required for a SCSI sub-
system. The plastic drive rails attached to devices mounted in the external
drive bays allow you to remove these devices without removing a single
screw. The systems can be either freestanding or rack-mounted.
A PowerEdge 4300 system can contain one or two Pentium II microproces-
sors. Each processor is housed in a single-edge contact (SEC) cartridge/heat
sink assembly mounted in a guide bracket on the system board, allowing for
greater heat dissipation. The processor has an internal operating frequency of
350 or 400 MHz (or a higher speed when available) and an external operating
frequency of 100 MHz. Contact Dell for information about Dell-supported
microprocessor upgrades.
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In addition to the standard features found in a traditional personal computer,
Dell PowerEdge 4300 systems include the following new and/or advanced
features:
One or two Intel Pentium II microprocessors with an internal operating fre-
quency of 350 or 400 MHz (or higher speed when available) andan external
bus speed of 100 MHz.
NOTE: Do not attempt to operate the system with the microprocessor set
to a speed other than the specified rating.
Support for symmetric multiprocessing (SMP) when two microprocessors
are installed.
NOTE: The second microprocessor must have the same internal operating
frequency as the first microprocessor. Not all versions of the Pentium II
microprocessor will work properly as an additional microprocessor in this

1-2 Dell PowerEdge 4300 Systems Service Manual
system; the upgrade kit from Dell contains the correct version for this
system.
A secondary (L2) cache of 512 KB of SRAM included within the SEC car-
tridge that contains the microprocessor.
64-MB and 128-MB (unbuffered) main memory, upgradable to 512 MB, or
upgradable to 1 GB using 256-MB registered SDRAM DIMMs.
BIOS in upgradable flash memory on the ISA bus.
Up to six hot-pluggable SCSI hard-disk drives. Two additional 1-inch drives
can be installed in the optional removable media bay.
Up to three redundant, hot-pluggable power supplies and a power-supply
paralleling board (PSPB), which is necessary for systems with two or more
power supplies.
Five redundant system cooling fans.
Six 32-bit PCI connectors and two shared 8-bit or 16-bit ISA connectors.
PCI and AGP local buses and ISA bus.
A VGA-compatible video subsystem with an ATI 3D Rage Pro AGP video
controller. This video subsystem contains 2 MB of SGRAM video memory
(nonupgradable).
A National Semiconductor PC87309 super I/O controller that controls the
bidirectional parallel port, two serial ports, and the diskette drive in the
externally accessible front bay.
An integrated Adaptec AIC-7890 Ultra2/LVD SCSI-3 host adapter that sup-
ports up to six 1.6-inch internal SCSI hard-disk drives via a SCSI backplane
board and special SCSI hard-disk drive carriers.
NOTE: The 1.6-inch drive carriers will accommodate 1-inch drives.
The SCSI backplane automatically configures SCSI ID numbers and SCSI
termination on individual hard-disk drives, greatly simplifying drive installa-
tion. The backplane supports hot-pluggable SCSI hard-disk drive installation
and removal when used in conjunction with a PowerEdge Expandable
RAID Controller.
An integrated Adaptec AIC-7860 Ultra/Narrow SCSI-3 host adapter that
supports the standard CD-ROM drive and two additional externally accessi-
ble SCSI devices in the external hard-disk drive bays.
Drive failure, online, and activity indicators visible on each hard-disk drive
connected to the SCSI backplane.
Server management circuitry that monitors operation of the system fans
as well as critical system voltages and temperatures. The server manage-
ment circuitry works in conjunction with the HP OpenView Network Node
Manager Special Edition (NNM SE) and the Dell OpenManage™ Hardware
Instrumentation Package (HIP).
System board support for the Dell OpenManage Remote Assistant when
the optional Dell Remote Assistant Card version 2 (DRAC 2), which pro-
vides additional local and remote server management, is installed.

System Overview 1-3
Fora complete list of system features, see “Technical Specifications” found later in
this chapter. For information about installing the PowerEdge 4300 systems in a
rack, see the
Dell PowerEdge 6300 and PowerEdge 4300 Systems Rack Instal-
lation Guide
.
When following the text in this manual, assume that the location or direction
relative to the computer is as shown in Figure 1-1. Figures 1-2 through 1-4
illustrate front-panel, back-panel, and interior features of the PowerEdge 4300
systems.
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back of computer
right side
left side
front of computer

1-4 Dell PowerEdge 4300 Systems Service Manual
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)LJXUH%DFN3DQHO)HDWXUHV
power switc
h
power indicator
drive access indicators (3)
power-supply status indicator
hard-disk
drive keyloc
k
diskette drive
CD-ROM drive
fan/temperature status indicator
parallel port
connector
serial port 2
connector
mouse
connector
keyboard
connector
serial port 1
connector
video connector
server
management
bus (SMB)
connectors (2)
external SCSI
connector port (2)
expansion slots (6)
AC power receptacle
optional redundant
power supply

System Overview 1-5
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hard-disk
drive bays (6)
external drive
bays (4)
SCSI backplane
board
system board
tray
latch
PCIexpansion
card
support
panel
microprocessors
hard-disk drive
cooling fan
assembly
system board fans

1-6 Dell PowerEdge 4300 Systems Service Manual
$FFHVVLQJWKH,QWHULRURIWKH6\VWHP
To access the SCSI backplane board or the PSPB, release the system-board
tray latch at the back lower corner of the tray (see Figure 1-5) and pull the tray
open to the first stop position (or
service position
).
NOTE: From the service position, if you depress and release the tray latch and
pull the tray out again, you will come to a second stop position that is used by
manufacturing. To remove the tray completely from any position, depress the
latch, hold it in, and pull the tray out of the chassis.
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system
board tray
SCSI backplane
board
tray
latch

System Overview 1-7
6\VWHP0HPRU\
System memory has a minimum of 64 MB of 72-bit-wide, unbuffered memory.
The system memory capacity can be expanded up to 1 GB by using combina-
tions of 64- and 128-MB unbuffered SDRAM DIMMs or 256-MB registered
SDRAM DIMMs.
NOTE: DIMMs must be rated to run at 100 MHz.
The system board has four 168-pin DIMM sockets. The DIMMs do not have to
be inserted in pairs. The socket population guidelines are as follows:
Populate the DIMM sockets in order from DIMM_A (right) to DIMM_D
(left).
The largest-capacity DIMM should be in socket DIMM_A, with smaller-
capacity DIMMs installed in decreasing sizes toward socket DIMM_D.
Unbuffered and registered DIMMs
cannot
be mixed. Remove any 64- or
128-MB unbuffered DIMMs before installing 256-MB registered DIMMs.
DIMMs support the ECC feature, which detects memory errors and cor-
rects single-bit memory errors. The ECC feature provides more reliable
memory and less downtime. The ECC feature is built into the memory con-
troller on the system board.
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For more detailed information about DIMM installation guidelines and samples
of DIMM configurations, see “Adding Memory” in Chapter 8 of the
Dell
PowerEdge 4300 Systems Installation and Troubleshooting Guide
.
See “DIMMs” in Chapter 4 of this document for information on removing and
replacing DIMMs.
DIMM_A socket

1-8 Dell PowerEdge 4300 Systems Service Manual
$GYDQFHG([SDQVLRQ6XEV\VWHPV
The computer system offers advanced expansion subsystems that can support
a mixture of traditional ISA expansion cards, Plugand Play ISA expansion cards,
and PCI expansion cards. The Resource Configuration Utility (RCU) included with
the system provides a means of avoiding resource conflicts that might arise from
such an arrangement.
After all legacy cards have been configured with the RCU, the system automat-
ically assigns any required memory space, IRQ lines, and DMA channels to any
installed Plug and Play ISA expansion cards and PCI expansion cards the next
time the system is rebooted. Chapter 5, “Using the Resource Configuration
Utility,” in the
DellPowerEdge 4300 SystemsUser’s Guide
describesthe RCUand
provides instructions for using it to configure the system.
The expansion-card slots include six PCI expansion-card connectors and two
ISA expansion-card connectors. Two of the PCI connectors share expansion-
card slots with the two ISA connectors. The expansion-card connectors are
located on the system board (see Figure 1-13).
9LGHR&RQWUROOHU
The video subsystem is built into the system board and consists of an AGP
VGA-compatible video subsystem with an ATI 3D Rage Pro SVGA video
controller. The video subsystem contains 2 MB of SGRAM video memory,
which is not upgradable. Noninterlaced resolutions are 640 x 480 (16.7 million
colors), 800 x 600 (16.7 million colors), and 1024 x 768 (256 colors).
,QWHJUDWHG6&6,&RQWUROOHUV
An integrated Adaptec AIC-7890 Ultra2/LVD SCSI-3 host adapter supports up
to six 1- or 1.6-inch internal SCSI hard-disk drives through a 68-pin connector on
the system board for a SCSI backplane board. The SCSI backplane board
automatically configures SCSI ID numbers and SCSI termination on individual
hard-disk drives, greatly simplifying drive installation. The integrated SCSI con-
troller resides on the PCI local bus for optimum performance.
An integrated Adaptec AIC-7860 Ultra/Narrow SCSI-3 host adapter attached to
the PCI bus supports up to three SCSI devices in the external drive bays
through a 50-pin connector on the system board.
6&6,+DUG'LVN'ULYHV
Dell PowerEdge 4300 systems include a SCSI backplane board, which greatly
simplifies cabling and configuration for SCSI hard-disk drives. SCSI ID and ter-
mination for SCSI hard-disk drives are both configured by the SCSI backplane
board, rather than on individual drives. SCSI hard-disk drives are supplied by
Dell in special drive carriers that fit in the internal drive bays.
NOTE: For maximum performance, install Ultra2/LVD drives exclusively.
Although you can install a mixture of Ultra2/LVD and Ultra hard-disk drives,
they will operate at the slower Ultra transfer rate.

System Overview 1-9
6&6,&RQILJXUDWLRQ*XLGHOLQHV
SCSI hard-disk drives must be configured as follows:
Disable termination on the drive. The SCSI backplane board provides termi-
nation for the SCSI bus.
Set the SCSI ID on all drives to 0. All SCSI ID numbers for the drives are set
by the SCSI backplane board.
Configure the drive so that the drive motor waits for a start unit command
from the SCSI host adapter before spinning.
SCSI devices (except hard-disk drives) in the external drive bays are controlled
by the Ultra/Narrow SCSI controller on the system board. Hard-disk drives in
the external drive bays are controlled by a RAID controller or the Ultra2/LVD
SCSI connector via a two-device ribbon cable from the external drive bay
insert’s backplane board. Although SCSI devices are installed essentially the
same way as other devices, their configuration requirements are different. To
configure SCSI devices installed in the external bays, follow the guidelines in
the following subsections.
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Each device attached to the Ultra/Narrow SCSI host adapter must have a
unique SCSI ID number from 0 to 7.
When SCSI devices are shipped from Dell, the SCSI ID defaults are assigned
as follows:
The integrated Ultra/Narrow SCSI host adapter is configured through the
BIOS as SCSI ID 7.
A SCSI tape drive is configured as SCSI ID 6 (the default for a tape drive).
A SCSI CD-ROM drive is usually configured as SCSI ID 5.
NOTE: There is no requirementthatSCSIIDnumbers be assigned sequentially or
that devices be attached to the cable in order by ID number.
'HYLFH7HUPLQDWLRQ
All Dell PowerEdge 4300 systems have an active terminator installed at the
end of the SCSI cable.
All
of the devices attached to the SCSI cable should
have their termination disabled.
363%DQG6\VWHP3RZHU6XSSOLHV
The Dell PowerEdge 4300 system provides one (when available as an option),
two, or three 320-W system power supplies and, when necessary, a PSPB.
See “System Power Supply” or “System Power Supply and PSPB Upgrade” in
Chapter 4 for the installation procedure for this option.

1-10 Dell PowerEdge 4300 Systems Service Manual
&$87,217ZRRUPRUHSRZHUVXSSOLHVDQGD363%PXVWEHLQVWDOOHG
LQWKHV\VWHPLIDQ\RIWKHIROORZLQJV\VWHPRSWLRQVDUHLQVWDOOHG
A second microprocessor
Two or more RAID controller host adapter cards
More than 512 MB of memory
One or more 1.6-inch hard-disk drives
Hard-disk drive carrier in the external drive bay
6\VWHP3RZHU6XSSOLHV
The system power supplies are stacked at the rear of the chassis and can slide
in and out of the unit. When fully installed, a power supply automatically mates
with a power harness attached to the back plate of the power supply cage. The
power harness connects the power supply to the PSPB.
The power supplies can operate from an AC power source of 115 VAC at 60 Hz
or 230 VAC at 50 Hz. They provide the DC operating voltages and currents
listed in Table 1-1.
NOTE: The power supplies produce DC voltages only under their loaded condi-
tion. Therefore, when you measure these voltages, the DC power connectors
must be mated to their PSPB harnesses at the bulkhead, and the harnesses
must be connected to their corresponding power input connectors on the
PSPB. The PSPB, in turn, must be connected as appropriate to the system
board, SCSI backplane board, or external drive bay.
.
363%
The PSPB multiplexes input from the power supplies to supply redundant
power to the system board, SCSI backplane, and external drive bays. Through
embedded server management (ESM), the PSPB can also be used to perform
such tasks as detecting the presence of one to three power supplies; monitor-
ing voltage and current outputs from the power supplies, voltage going to the
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9ROWDJH 5DQJH 0D[LPXP2XWSXW&XUUHQW
1
+3.3 VDC +3.23 to +3.45 VDC 18.0 A
+5 VDC +4.90 to +5.25 VDC 40.0 A
+12 VDC +11.40 to +12.60 VDC 16.0 A
–12 VDC –10.80 to –13.20 VDC 0.5
2
A
–5 VDC –4.50 to –5.50 VDC 0.3
2
A
+5 VFP +4.85 to +5.35 VDC 0.4 A
1
Maximum continuous combined load on +5 VDC and +3.3 VDC outputs cannot exceed
240 W.
2
Maximum combined load current on –5 VDC and –12 VDC outputs cannot exceed 0.6 A.

System Overview 1-11
system board, and fan rpm; and supporting the SMB_ALERT protocol used by
the server management bus.
The PSPB connects to the power supplies through short harnesses that attach
to the back of the power supply cages. The PSPB is attached to the side wall of
the computer behind the external drive cage and is oriented in parallel with the
system board. For information on removing and replacing the PSPB, see
“Power-Supply Paralleling Board” in Chapter 4.
Figure 1-7 shows the PSPB power connector layout; Table 1-2 shows the cable
connections made from the PSPB.
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
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PS1_PB1 and
PS1_PB2 To the power connector on the first power supply
PS2_PB1 and
PS2_PB2 To the power connector on the second power supply
PS3_PB1 and
PS3_PB2 To the power connector on the third power supply
system-board power
cable connector
(PWR2)
system-board power
cable connector
(PWR1)
system-board power
cable connector
(PWR3)
SCSI backplane-board
powercableconnector
(HD_B/P)
external-drives power
cable connector (FD)
cable connectors –
power supply #1
(PS1_PB1 [top] and
PS1_PB2)
cable connectors –
power supply #2
(PS2_PB1 [top] and
PS2_PB2)
cable connectors –
power supply #3
(PS3_PB1 [top] and
PS3_PB2)

1-12 Dell PowerEdge 4300 Systems Service Manual
3LQ$VVLJQPHQWVIRUWKH363%3RZHU&RQQHFWRUV
The power-supply output voltages can be measured at the back (wire side) of
the connectors without being disconnected. In the following diagrams, volt-
ages for the PSPB PWR
x
connectors are shown as measured at the system
board; voltages for the PSPB FD connector are shown as measured at the
PSPB; voltages for the PSPB HD_B/P connector are shown as measured at the
SCSI backplane.
1
Pin 13 — SYS_PS_ON# should measure between +4.75 and +5.25 VDC except when the
power button on the front panel is pressed, taking SYS_PS_ON# to its active-low state.
2
Pin 5 — SYS_PWR_GOOD should measure between +4.75 and +5.25 VDC when the power
supply is operating to indicate that all power-supply output voltages are within the ranges
specified in Table 1-1.
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PWR1 To POWER1 connector on system board
PWR2 To POWER2 connector on system board
PWR3 Not used
FD To diskette drives and other devices in external
drive bays
HD_B/P To POWER connector on SCSI backplane board
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&RQQHFWRU &DEOH&RQQHFWLRQ
13 14 15 16 17
common (black)
+5 VDC (red)
NC_TFSC (gray)
+5 VDC (red)
SYS_PS_ON #1(gray)
common (black)
common (black)
common (black)
–5 VDC (white)
+3.3 VDC (orange)
18
+5 VDC (red)
19 20 21 22 23 24
+5 VDC (red)
12345
+12 VDC (yellow)
+3.3 V_SENSE (orange)
common (black)
common (black)
+5 VFP (violet)
SYS_PWR_GOOD2
(gray)
SENSE (black)
+5 V_SENSE (red)
common (black)
–12 VDC (blue)
6
+5 VDC (red) 789101112+3.3 VDC (orange)