Dell INSPIRON 4100, 180, POWEREDGE 200 User Manual

Dell

®

PowerEdge

®

4100/180 and 4100/200 Systems

SERVICE MANUAL

®

Information in this document is subject to change without notice.

 1995–1996 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 of Dell Computer Corporation; Intel, Pentium, and LANDesk are

registered trademarks of Intel Corporation; IBM is a registered trademark of International Business Machines Corporation; MS-DOS is a registered trademark of
Microsoft 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.

November 1996 P/N 58562

Chapter 1

System Overview

The Dell

upgradable server systems, which use the Intel® Pentium® Pro family of
microprocessors. PowerEdge 4100 systems incorporate the high-performance
peripheral component interconnect (PCI) local bus as well as the extended
industry-standard architecture (EISA) expansion bus. These buses are built into
the system board, which integrates the microprocessor(s) and other elements of the
basic computer system.

PowerEdge 4100 systems may have one or two Pentium Pro microprocessors.
The systems have been designed for better serviceability and increased reliabil­ity, with optional redundant power supplies, RAID capability, hot-pluggable
SCSI hard-disk drives, thermal and power supply monitoring, redundant fans,
and ECC memory. The PowerEdge 4100 systems are freestanding or can be
rackmounted to integrate your servers. The microprocessor modules are
installed in zero insertion force (ZIF) sockets on the system board, which allow
you to replace microprocessors faster. Contact Dell for information about Dell­supported microprocessor upgrades.

The Pentium Pro microprocessor contains a built-in clock multiplier circuit,
which increases the microprocessor’s internal operating frequency to a multiple
of the system clock frequency. The microprocessors for each of these systems
and their operating frequencies are as follows:

®

PowerEdge

®

4100 systems covered in this manual are high-speed,

• Dell PowerEdge 4100/180 system — 180 MHz derived from a system clock

frequency of 60 MHz

• Dell PowerEdge 4100/200 system — 200 MHz derived from a system clock

frequency of 66 MHz

System Features

In addition to the standard features found in a traditional personal computer,
Dell PowerEdge 4100 systems include the following new and/or advanced
features:

• 256 KB (PowerEdge 4100/180 systems) or 512 KB (PowerEdge 4100/200

systems) of cache memory internal to the Pentium Pro module

• 64 MB of 72-bit wide, buffered, extended data output (EDO) main memory,

upgradable to 1024 MB (1 GB)

• Hot-pluggable SCSI backplane supporting up to six hard-disk drives

• Optional, redundant hot-pluggable power supplies

System Overview 1-1

• Error correction code (ECC) feature built into the memory controller on the

system board

• Advanced combination EISA and PCI expansion subsystem

• Five PCI and three EISA expansion-card slots (none shared)

• Integrated VGA-compatible video subsystem attached to the PCI bus, with

1 MB video memory standard

• BIOS in upgradable flash memory attached to the EISA bus

• Integrated super I/O controller attached to the EISA bus, provides a

bidirectional parallel port, two serial ports, and the diskette drive interface

• Integrated ultra-wide and ultra-narrow SCSI controllers

• Integrated server management circuitry that monitors critical system volt-

ages and temperatures, as well as the operation of the system cooling fans

• CD-ROM drive standard in an externally accessible drive bay

• Recessed power and reset buttons to prevent accidental system interruptions

• New quick-test feature in the system diagnostics

All of these features, except the new quick-test feature, are briefly described in
this chapter. (For more information about the Quick Test option in the CD-ROM
based diagnostics, see “Running the System Diagnostics” in Chapter2.) For a complete
list of system features, see “Technical Specifications” found later in this chapter.

For information about installing the PowerEdge 4100 systems in a rack, see the
“Dell PowerEdge 4100 and 6100 Systems Rack Kit Installation Guide”
(P/N 40722).

1-2 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

back of computer

left side

front of computer

right side

Figure 1-1. Computer Orientation

NOTE: When following the text in this manual, assume that the location or
direction relative to the system is as shown in Figure 1-1.

System Overview 1-3

reset button

activity indicator

fault indicator

online indicator

power button and
power-on indicator

diskette-drive access
indicator (typical)

SCSI hard-disk drive

SCSI hard-disk drive

SCSI hard-disk drive

Figure 1-2. Front-Panel Features

CAUTION: To avoid possible data or file structure corruptions, the front­panel reset button should be used only when restarting the system with a
key combination fails. Before using the reset button to initiate a hardware
reset, close any open application programs and files if possible. If you are
using MS-DOS®, the system can be rebooted by pressing

<Ctrl><Alt><Del>.

1-4 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

expansion slots

external drive bays (4)

control panel

internal drive
bays (6)

system board

microprocessor sockets

cooling fan connectors (3)
(cooling fans are located
behind the air intake panel)

Figure 1-3. Front/Left Internal View

hard-disk drive
security lock

air intake panel

System Overview 1-5

external drive bays (4)

diskette interface
cable (ultra-narrow)

SCSI interface
connector (ultra-wide)

internal drive bays (6)

SCSI backplane board

SCSI power connector

server
management
connector

control panel connector

power supply (optional)

power supply

SMB connector

SCSI connector port

Figure 1-4. Back/Right Internal View

1-6 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

AC power receptacle

security cable slot

keylock

power supply
(optional)

cable strain relief

power supply

red LED

keylock

video connector

server-management
serial port connector

parallel port connector

serial port 2 connector

serial port 1 connector

mouse connector

green LED

Figure 1-5. I/O Panel

SMB connector

keyboard connector

SCSI connector port

System Overview 1-7

System Memory

The PowerEdge 4100 systems have a minimum of 64 MB of 72-bit-wide, buff­ered EDO memory. The system memory capacity can be expanded to 1024 MB
(1 GB) by using combinations of 32- and 128-MB buffered, EDO dual in-line
memory modules (DIMMs) having gold connectors.

The system board has eight 168-pin DIMM sockets. The socket population rules
for the DIMMs are as follows:

• Populate the DIMM sockets in order from DIMM A (upper) to DIMM H

(lower).

• The DIMMs should be obtained from Dell to guarantee compatibility. All

system memory operates at the speed of the slowest DIMM installed.

• DIMMs of both capacities can be installed in the system. However, the

larger-capacity DIMMs should be installed in the top sockets, beginning
with socket DIMM A, with the smaller-capacity DIMMs installed after­wards in order toward socket DIMM H.

The 72-bit wide, buffered EDO DIMMs support the ECC feature, which detects
memory errors and corrects single-bit memory errors. The ECC feature pro­vides more reliable memory and less downtime, and is built into the memory
controller on the system board.

See “DIMMs” in Chapter 4 for information on removing and replacing DIMMs.

Advanced Expansion Subsystem

The computer system offers advanced expansion subsystems that can support a
mixture of traditional EISA expansion cards, Plug and Play ISA expansion cards,
and PCI expansion cards. The EISA Configuration Utility, 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 EISA Configuration Utility ,
the system automatically assigns 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 EISA Config­uration Utility,” in the Dell PowerEdge 4100/180 and 4100/200 Systems User’s
Guide describes the EISA Configuration Utility and provides instructions for using it
to configure the system.

The eight expansion-card slots include three EISA expansion-card connectors
and five PCI expansion-card connectors. The expansion-card connectors are
located on the system board (see Figure 1-18).

Integrated Server Management

The system board contains integrated server management circuitry that moni­tors critical system voltages and temperatures, as well as the operation and
speed of the system cooling fans. The integrated server management circuitry
works in conjunction with the Intel LANDesk® Server Management suite.

1-8 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

Video Controller

The video subsystem is built into the system board and consists of a high-speed,
high-resolution, VGA-compatible video subsystem. The video controller is con­nected to the PCI local bus. The standard video subsystem contains 1 MB of
DRAM memory (the video memory size is not upgradable).

Maximum noninterlaced resolutions are 640 x 480 pixels with 16.7 million col­ors, 800 x 600 pixels with 65,536 colors, and 1024 x 768 pixels with 256 colors.

Integrated SCSI Controllers

A built-in Adaptec 7880 Ultra/Wide SCSI controller provides an ultra-wide fast
SCSI interface via a 68-pin connector on the system board. This SCSI controller
attaches to the PCI bus to provide a high-performance SCSI bus and also con­trols the six SCSI hard-disk drives in the SCSI hard-disk drive bays. In the
standard Dell PowerEdge 4100 system configuration, the Ultra/Wide SCSI host
adapter on the system board controls the SCSI backplane board. When used in
combination with an optional PowerEdge Expandable RAID Controller host
adapter card, the SCSI backplane board allows you to remove and insert hard­disk drives without shutting down the system. External hard-disk drives are not
supported by the built-in SCSI controller.

A built-in Adaptec 7860 Ultra/Narrow SCSI controller provides a SCSI inter­face via a 50-pin connector to the CD-ROM drive in the externally accessible
drive bay and to any other SCSI drives installed in the other two bays.

SCSI Hard-Disk Drives

Six internal hot-pluggable hard-disk drive bays are located under the externally
accessible drive bays at the front of the computer (see Figure 1-4). These bays can
contain up to six 1- to 1.6-inch-high SCSI hard-disk drives (either fast/wide or ultra
[fast] wide).

NOTES: The externally accessible drive bays at the front of the computer are
normally used for diskette drives, CD-ROM drives, and/or tape drives. Hard­disk drives should be installed in the SCSI hard-disk drive bays. For detailed
information about installing externally accessible drives, see Chapter 9, “Installing
Drives in the External Bays,” in the Dell PowerEdge 4100/180 and 4100/200 Sys-
tems Installation and Troubleshooting Guide. For detailed information about
installing SCSI hard-disk drives, see Chapter 10, “Installing Drives in the Internal
Bays,” in the Installation and Troubleshooting Guide.

Dell supports the drives it furnishes.

SCSI Configuration Guidelines

Although SCSI devices are installed essentially the same way as other devices,
their configuration requirements are different. To configure your SCSI sub­system, follow the general guidelines offered in the following subsections.

System Overview 1-9

SCSI ID Numbers

Each device attached to the 7860 Ultra/Narrow SCSI host adapter must have a
unique SCSI ID number from 0 to 7. For additional SCSI addressing informa­tion, see Chapter 10, “Installing Drives in the Internal Bays,” in the Installation
and Troubleshooting Guide.

When narrow SCSI devices are shipped from Dell, the default SCSI ID numbers
are assigned as follows:

• The computer’s built-in Ultra/Narrow SCSI host adapter is configured

through the BIOS as SCSI ID 7.

• A SCSI CD-ROM drive (installed in an externally accessible drive bay) is

configured as SCSI ID 5.

• A SCSI tape drive (if installed) is configured as SCSI ID 6.

NOTE: There is no requirement that SCSI ID numbers be assigned sequentially or
that devices be attached to the cable in order by ID number.

Devices attached to the Ultra/Wide SCSI host adapter need no ID settings or ter­mination; ID settings and termination are handled automatically by the SCSI
backplane.

Device Termination

SCSI logic requires that termination be enabled for the two devices at opposite
ends of the SCSI chain and disabled for all devices in between. Therefore,
regardless of whether you are installing internal or external devices, use the fol­lowing guidelines:

• A single SCSI device (such as the standard CD-ROM drive) is terminated.

• If two or more SCSI devices are installed, connect the devices as follows:

— Attach one of the devices to the end connector on the SCSI cable, and leave the

terminator enabled on that device.

— The other end of the SCSI cable connects to the computer’s built-in Ultra/Narrow

SCSI host adapter or to an optional SCSI host adapter card, which needs no
termination.

— Disable the terminators on all other devices you attach to the cable.

The standard SCSI CD-ROM drive is configured as the last device on the SCSI
cable. Therefore, any additional devices attached to the cable should have their
terminators disabled.

See the documentation provided with the SCSI device for information on dis­abling the device’s terminator.

1-10 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

System Unit

The following subsections provide service-related information about the system
unit.

System Power Supply

The 500-W system power supply can operate from an AC power source of 90 to
265 VAC at 50 or 60 Hz. When the power-supply paralleling board is installed,
the power supplies are hot-pluggable. When the red LED on the power supply is
lit (except during power-up), it indicates that the power supply has failed (see
Figure 1-5). When the green LED is lit, it indicates that +5 VDC is on. The sys­tem power supply provides the DC operating voltages and currents listed in
Table 1-1.

NOTE: The power supply produces DC voltages only under its loaded condi­tion. Therefore, when you measure these voltages, the DC power connectors
must be connected to their corresponding power input connectors on the system
board or drives.

.

Table 1-1. DC Voltage Ranges

Maximum Output

Voltage Range

Current

+3.3 VDC +3.135 to +3.465 VDC 15.0 A
+5 VDC +4.90 to +5.25 VDC 50.0 A
+12 VDC +11.40 to +12.60 VDC 25.0 A
–12 VDC –10.80 to –13.20 VDC 0.3 A
–5 VDC –4.50 to –5.50 VDC 0.3 A
+5 VFP

1

Maximum continuous DC output power shall not exceed 500 W.

2

VFP (volts flea power) — sometimes called “standby power.”

2

+4.85 to +5.36 VDC 0.25 A

1

System Overview 1-11

Pin Assignments for the DC Power Connectors (Nonredun­dant Systems)

The power-supply output voltages for nonredundant systems can be measured
at the connectors on the back of the power supply (P1, P2, P3, P4, and P5) or at
the connectors on the power connector panel (J11, J12, J13, J14, and J15). The
following illustrations show both sets of connectors.

P2

P1

P5

P4

P3

Figure 1-6. Power Supply Connectors

J12 (P2)
J11 (P1)

J15 (P5)
J14 (P4)

J13 (P3)

Figure 1-7. Power Connector Panel

1-12 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

+5 VDC (red)

–5 VDC (white)

common (black)

common (black)

common (black)

PSON# 1(gray)

J11 (P1)

+5 VDC (red)

common (black)

+5 VDC sense (red)

–sense (black)

PWRGOOD 2 (orange)

+5 VFP (purple)

13

14 15 16 17 18 19 20 21 22

6

1 2 3 4 5 9 10

7

8

+5 VDC (red)

+5 VDC (red)

+5 VDC (red)

+5 VDC (red)

+3.3 VDC (orange)
+3.3 VDC (orange)

23 24

11 12

+3.3 VDC (orange)
+3.3 VDC sense (orange)

common (black)

common (black)

-12 VDC (blue)
+12 VDC (yellow)

1

Pin 13 — PSON# should measure between +4 and +5 VDC except when the power button on the front
panel is pressed, taking PSON# to its active-low state.

2

Pin 5 — PWRGOOD should measure between +4 and +5 VDC when the power supply is on and oper-

ating to indicate that all power-supply output voltages are within the ranges specified in Table 1-1.

Figure 1-8. DC Power Connector J11 (P1)

System Overview 1-13

+5 VDC (red)

common (black)
common (black)

common (black)
common (black)

J12 (P2), J13 (P3),
J14 (P4)

10

11 12 13 14

15 16

common (black)

common (black)

common (black)

+5 VDC (red)

17 18

1 2 3 4 5 6 7

+5 VDC (red)

+3.3 VDC (orange)

+12 VDC (yellow)

+5 VDC (red)

+5 VDC (red)

8 9

+3.3 VDC (orange)
+12 VDC (yellow)

+3.3 VDC (orange)
+5 VDC (red)

Figure 1-9. DC Power Connectors J12 (P2), J13 (P3), and J14 (P4)

+SW1
+12 VDC (red)

+3.3 VDC (orange)

Fail LED cathode (red)

Good LED cathode (green)

6 7 8 9 10

J15 (P5)

1

2 3 4 5

Figure 1-10. DC Power Connector J15 (P5)

1-14 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

Good LED anode (green)
Fail LED anode (red)
+5 VDC (red)
+FAN_TACH (gray)

+SW1

DC Power Distribution (Nonredundant System)

Figures 1-11 provides information about DC power distribution for the
nonredundant PowerEdge 4100 system.

power

supply # 1

P1–5

PSON#
+5 VFP
+5 VDC
–5 VDC
+12 VDC
–12 VDC
+3.3 VDC

power
connector
panel

P1

NRLED
PWRGOOD
PSON#
+5 VFP
+5 VDC
–5 VDC
+12 VDC
–12 VDC

+3.3 VDC

P2

+12 VDC
+5 VDC

+3.3 VDC

P3

+12 VDC
+5 VDC
+3.3 VDC

DDBP

+12 VDC
+5 VDC

FD1–4

+12 VDC
+5 VDC

system board

management

PWRGOOD

PSON#

+5 VFP
+5 VDC

–5 VDC

+12 VDC

–12 VDC
+3.3 VDC

main memory
sockets

DIMM A
through
DIMM H

+3.3 VDC

core VCC (+2.1 to +3.5 VDC)

PROCESSOR1
and
PROCESSOR2

power

logic

RTC/

NVRAM

P6 signal terminators

keyboard
controller

processor

core

regulator (2)

+1.5 VDC

battery

+3.3 VDC
+5 VDC
+12 VDC

–12 VDC

+5 VDC
–5 VDC
+12 VDC

–12 VDC

battery (+3 VDC)

+3.3 VDC

+5 VFP

PWRGOOD

+5 VFP to SCSI backplane

+12 VDC
+12 VDC
+12 VDC

fuse

+5 VDC

+5 VDC

GTL

regulator

PCI4
through
PCI8

EISA1
through
EISA3

REMOTE

FAN1

FAN2
FAN3

MOUSE

KEYBOARD

NOTE: A server management cable
(16-pin) carries the +5 VFP from
the system board to the SCSI
backplane. The control panel cable
(30-pin) carries the +5 VFP from
the backplane to the control panel.

6

3 X 6 LEDs

SCSI backplane
(six drive bays)

5

4

3

control panel

+5 VFP from SCSI backplane

Figure 1-11. Power Distribution (Nonredundant System)

2

reset

1

on/off

CD-ROM

power-on
LED

FLOPPY

speaker

System Overview 1-15

Pin Assignments for the DC Power Connectors (Redundant
Systems)

The power-supply output voltages for redundant systems can be measured at the
connectors on the power-supply paralleling board (PWR1, PWR2, PWR3,
PWRSCSI, and PWRFD) or at the connectors on the end of the wire bundles
extending from these connectors (PWR1, PWR2, PWR3, DDBP, and
FD1–FD4).

PWR1

PWRFD
(FD1–FD4)

PWR2

PWR3

PWRSCSI

diagnostics port

(DDBP)

Figure 1-12. Power-Supply Paralleling Board Connectors

1-16 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

NC_3INH

+3.3 VDC (orange)

common (black)

common (black)

POWER_GOOD (gray)

common (black)

+5 VFP (violet)

PWR1

10

11 12 13 14

15 16

+3.3 VDC sense (orange)

-3.3 VDC sense (black)

FAN_TACH (gray)

NC_NRLED

17 18

1 2 3 4 5 6 7

-12 VDC (blue)

-5 VDC (white)

PWR_STAT_BIT (gray)

I 2C_SDA (gray)

I 2C_SCL (gray)

Figure 1-13. DC Power Connector PWR1

common (black)

+12 VDC (yellow)

common (black)

+12 VDC (yellow)

11

12 13 14 15 16

PWR2,
PWR3

17 18 19 20

8 9

BAT_V (gray)

PRES_DET (gray)
NC_+12 sense

+5 VDC sense (red)

+3.3 VDC (orange)
common (black)

+3.3 VDC (orange)

common (black)

Figure 1-14. DC Power Connector PWR2 and PWR3

+5 VDC (red)

common (black)

+5 VDC (red)

common (black)

+5 VDC (red)

1 2 3 4 5 9 10

6 7

8

common (black)

+5 VDC (red)

common (black)
+5 VDC (red)
common (black)

System Overview 1-17

common (black)

common (black)

+12 VDC (yellow)

common (black)
common (black)

common (black)
common (black)
common (black)

8

9 10 11 12

13 14

PWRSCSI
(DDBP)

1 2 3 4 5 6 7

+12 VDC (yellow)

+5 VDC (red)

+12 VDC (yellow)

+5 VDC (red)

+12 VDC (yellow)

+5 VDC (red)

+12 VDC (yellow)

Figure 1-15. DC Power Connector PWRSCSI (DDBP)

common (black)
common (black)
+5 VDC (red)

2

5 6 7

8

PWRFD
(FD1–FD4)

1

1

2 3

1

Wires 1 through 4 are connected to FD1 and FD2.

2

Wires 5 through 8 are connected to FD3 and FD4.

4

+5 VDC (red)
common (black)

common (black)
+12 VDC (yellow)

Figure 1-16. DC Power Connector PWRFD (FD1–FD4)

1-18 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

DC Power Distribution (Redundant System)

Figures 1-17 provides information about DC power distribution for the redun­dant PowerEdge 4100 system.

power

supply # 1

power

supply # 2

P1–5

POK

PSON#
+5 VFP
+5 VDC
–5 VDC
+12 VDC
–12 VDC

+3.3 VDC

P1–5

PSON#
+5 VFP
+5 VDC
–5 VDC
+12 VDC
–12 VDC

+3.3 VDC

PWR1

BATV
PWRGOOD
PSON#
+5 VFP
+5 VDC
–5 VDC
+12 VDC
–12 VDC

+3.3 VDC

PWR2

+12 VDC
+5 VDC

+3.3 VDC

PWR3

+12 VDC
+5 VDC

+3.3 VDC

PWRSCSI
(DDBP)

+12 VDC
+5 VDC

PWRFD
(FD1–4)

+12 VDC
+5 VDC

system board

BATV
PWRGOOD

PSON#

+5 VFP
+5 VDC

–5 VDC

+12 VDC

–12 VDC

+3.3 VDC

main memory
sockets

DIMM A
through
DIMM H

+3.3 VDC

power

management

logic

RTC/

NVRAM

keyboard
controller

battery

+3.3 VDC
+5 VDC
+12 VDC

–12 VDC

+5 VDC
–5 VDC
+12 VDC

–12 VDC

battery (+3 VDC)

PWRGOOD

+5 VFP to SCSI backplane

fuse

processor

core

regulator (2)

+3.3 VDC

+5 VFP

+12 VDC
+12 VDC
+12 VDC

+5 VDC

+5 VDC

PCI4
through
PCI8

EISA1
through
EISA3

REMOTE

FAN1

FAN2
FAN3

MOUSE

KEY­BOARD

power-supply
paralleling board

NOTE: A server management cable
(16-pin) carries the +5 VFP from
the system board to the SCSI
backplane. The control panel cable
(30-pin) carries the +5 VFP from
the backplane to the control panel.

PROCESSOR 1
and
PROCESSOR 2

core VCC (+2.1 to +3.5 VDC)

P6 signal terminators

SCSI backplane
(six drive bays)

6

5

4

control panel

+5 VFP from SCSI backplane

3 X 6 LEDs

Figure 1-17. Power Distribution (Redundant System)

3

+1.5 VDC

2

reset

1

on/off

GTL

regulator

power-on
LED

CD-ROM

FLOPPY

speaker

System Overview 1-19

System Board Layout

socket (PROCESSOR2)

The subsections that follow provide service-related information
about the system board components.

diskette/tape drive interface
connector (FLOPPY)

EISA connectors
(EISA1 [top], EISA2,
and EISA3)

PCI connectors
(PCI4 [top]–PCI8)

battery connector
(BATTERY)

video connector
(MONITOR)

server-management
serial port connector
(REMOTE)

parallel port connector
(PARALLEL)

serial port 2 connector
(SERIAL2)

serial port 1 connector
(SERIAL1)

mouse connector
(MOUSE)

keyboard connector
(KEYBOARD)

Ultra/Narrow SCSI host adapter
connector (SCSI2 CD-ROM)

secondary microprocessor

Ultra/Wide SCSI host adapter
connector (BACKPLANE SCSI1)

power supply
connector (POWER2)

power supply
connector (POWER1)

front of
system board

DIMM sockets
(DIMM A [top]–DIMM H)

fan connectors
(FAN1, FAN2, FAN3)

speed and configuration
jumpers

primary microprocessor
socket (PROCESSOR1)

power supply connector
(POWER3)

server-management bus
connector (SMB BACKPLANE)

Figure 1-18. System Board Components

1-20 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

Main Memory

The eight DIMM sockets on the system board can accommodate combinations
of 32- and 128-MB DIMMs up to a total memory capacity of 1024 MB (1 GB).
The system is shipped with high-speed (60-ns) 3.3-V EDO DIMMs installed.
When reinstalling DIMMs, use the following guidelines:

• Install a DIMM in socket DIMM A before socket DIMM B, in socket

DIMM B before socket DIMM C, and so on.

• If you are installing DIMMs of different sizes, install them in order of

decreasing capacity, beginning with socket DIMM A.

• DIMMs need not be installed in pairs, but gold connectors are required.

See “DIMMs” in Chapter 4 for information on removing and replacing DIMMs.

System Board Jumpers

jumpered

unjumpered

Figure 1-19. System Board Jumpers

System Overview 1-21

Table 1-2. Jumper Descriptions

Jumper Description Default Setting

EISA EISA Configuration Utility Not installed (utility settings are

retained at system boot)
VGA Integrated video controller Installed (controller is enabled)
PASSWD Password enable/disable Installed (password feature

enabled)
CRDBIOS Reserved Not installed (reserved; do not

change)
RSRVD2

RSRVD1

Reserved Not installed (reserved; do not

change)
200MHZ Microprocessor speed Installed only if the micro-

processor’s internal speed is

200 MHz
180MHZ Microprocessor speed Installed only if the micro-

processor’s internal speed is

180 MHz

Interrupt Assignments

Table 1-3. Interrupt Assignments

IRQ Line Used/Available

IRQ0 Generated by system timer
IRQ1 Generated by keyboard controller to indicate that keyboard’s

output buffer is full

IRQ2 Generated internally by interrupt controller to enable IRQ8

through IRQ15

IRQ3
and
IRQ4

Generated by super I/O controller to indicate that device con­nected to corresponding serial port requires service (IRQ3 for
COM2 or COM4; IRQ4 for COM1 or COM3)

IRQ5 Available for use by expansion card unless this IRQ line is used by

secondary parallel port

IRQ6 Generated by super I/O controller to indicate that diskette drive

requires service

IRQ7 Generated by super I/O controller to indicate that device con-

nected to parallel port requires service
IRQ8 Generated by keyboard controller for each tick of RTC
IRQ9 Available for use by expansion card

1-22 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

Table 1-3. Interrupt Assignments (continued)

IRQ Line Used/Available

IRQ10 Available for use by expansion card
IRQ11 Available for use by expansion card
IRQ12 Generated by keyboard controller to indicate that mouse’s output

buffer is full
IRQ13 Generated by math coprocessor to indicate coprocessor error
IRQ14 Available for use by expansion card
IRQ15 Available for use by expansion card

DMA Channel Assignments

Table 1-4. DREQ Line Assignments

DREQ Line Used/Available

DREQ0 Available
DREQ1 Available
DREQ2 Generated by super I/O controller to initiate DMA cycle for

attached diskette drive
DREQ3 Available
DREQ4 Generated by bus controller chip to activate second DMA

controller
DREQ5 Available
DREQ6 Available
DREQ7 Available

System Overview 1-23

Technical Specifications

Table 1-5. Technical Specifications

Microprocessor

Microprocessor type. . . . . . . . single or dual Intel Pentium Pro

microprocessors

Microprocessor speed. . . . . . . 200 MHz internal (66 MHz external)

or 180 MHz internal (60 MHz external)

First-level cache . . . . . . . . . . . 16 KB

Second-level cache. . . . . . . . . 256 KB for 180 MHz; 512 KB for 200 MHz

Math coprocessor . . . . . . . . . . internal to the microprocessor

System Information

System chip set. . . . . . . . . . . . Intel Natoma 82440FX set

Data bus width . . . . . . . . . . . . 64 bits

Address bus width . . . . . . . . . 32 bits

Flash EPROM. . . . . . . . . . . . . 4 Mbits

Expansion Bus

Bus types . . . . . . . . . . . . . . . . PCI and EISA

Bus speed . . . . . . . . . . . . . . . . PCI: 30 MHz (180/60 processor); 33 MHz

(200/66 processor);

EISA: 7.5 MHz (180/60 processor); 8.33 MHz

(200/66 processor)
PCI expansion-card

connectors. . . . . . . . . . . . . . . . five

EISA expansion-card

connectors. . . . . . . . . . . . . . . . three

EISA expansion-card

connector size. . . . . . . . . . . . . 198 pins

EISA expansion-card connector

data width (maximum) . . . . . . 32 bits

PCI expansion-card

connector size. . . . . . . . . . . . . 120 pins

PCI expansion-card connector

data width (maximum) . . . . . . 32 bits

1-24 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

Table 1-5. Technical Specifications (continued)

System Clocks

System clock. . . . . . . . . . . . . . 60 or 66 MHz (matches external processor bus

speed)

Diskette/communications

ports . . . . . . . . . . . . . . . . . . . . 24 MHz from the system clock

Memory

Architecture . . . . . . . . . . . . . . 72-bit, noninterleaved

DIMM sockets . . . . . . . . . . . . eight

DIMM capacities . . . . . . . . . . 32 and 128 MB, EDO mode

Standard RAM . . . . . . . . . . . . 64 MB

Maximum RAM . . . . . . . . . . . 1024 MB (1 GB)

BIOS address . . . . . . . . . . . . . F000:0000h–F0000:FFFFh

Drives

Externally accessible bays . . . four 5.25-inch bays for half-height diskette

drives, tape drives, or CD-ROM drives (one
bay for a 3.5-inch diskette drive and one bay
for a CD-ROM [standard])

Internally accessible bays . . . . six 1- to 1.6-inch-high SCSI hard-disk drives,

hot-pluggable with an optional PowerEdge
Expandable RAID Controller host adapter card

System Board Connectors

Externally accessible:

Serial (DTE) . . . . . . . . . . . two 9-pin connectors; 16550-compatible

(UART)

Server Management

(serial). . . . . . . . . . . . . . . . one 9-pin connectors; modem port for

embedded server management

Parallel . . . . . . . . . . . . . . . one 25-hole connector (bidirectional)

Video. . . . . . . . . . . . . . . . . one 15-hole connector (on system board or

add-in video card)

PS/2-style keyboard . . . . . one 6-pin mini-DIN

PS/2-compatible mouse. . . . one 6-pin mini-DIN

Internally accessible:

Diskette drive . . . . . . . . . . one 34-pin connector

Fan . . . . . . . . . . . . . . . . . . three 3-pin connectors

System Overview 1-25

Table 1-5. Technical Specifications (continued)

System Board Connectors (continued)

POWER1 . . . . . . . . . . . . .

one 18-pin connector: standby power, I2 C,
PWRGOOD, and miscellaneous power

POWER2 . . . . . . . . . . . . . one 20-pin connector: +3.3 VDC, +5 VDC, or

+12 VDC

POWER3 . . . . . . . . . . . . . one 20-pin connector: +3.3 VDC, +5 VDC, or

+12 VDC

BACKPLANE SCSI1. . . . one 68-pin connector, ultra-wide (fast), to

SCSI backplane

SCSI2 CD-ROM. . . . . . . . one 50-pin connector, ultra-narrow, to

CD-ROM

SMB BACKPLANE. . . . . one 16-pin connector (server management) to

SCSI backplane

SCSI Backplane Connectors

SCSI hard-disk drive connection

sockets . . . . . . . . . . . . . . . . . . six 80-pin connectors

SCSI controller. . . . . . . . . . . . one 68-pin connector

Power . . . . . . . . . . . . . . . . . . . one 14-pin connectors

Video

Video type. . . . . . . . . . . . . . . . embedded PCI (see User’s Guide for

specifications)

Video memory . . . . . . . . . . . . 1 MB

Key Combinations

<Ctrl><Alt><Del>. . . . . . . . . . . . reboots the system (if running MS-DOS)

<F2>. . . . . . . . . . . . . . . . . . . . . . . . starts System Setup program (during POST

only)

Controls and Indicators

Reset control. . . . . . . . . . . . . . push button

Power control . . . . . . . . . . . . . push button

Power indicator. . . . . . . . . . . . green LED

Diskette drive access

indicator . . . . . . . . . . . . . . . . . green LED

CD-ROM busy indicator . . . . green LED

SCSI hard-disk drive online

indicator . . . . . . . . . . . . . . . . . green LED

1-26 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

Table 1-5. Technical Specifications (continued)

Controls and Indicators (continued)

SCSI hard-disk drive activity

indicator . . . . . . . . . . . . . . . . . green LED

SCSI hard-disk drive fault

indicator . . . . . . . . . . . . . . . . . yellow LED

Power-supply 5-VDC online

indicator . . . . . . . . . . . . . . . . . green LED

Power-supply failure

indicator . . . . . . . . . . . . . . . . . red LED (flashes at power-on; stays lit in the

event of a power failure)

Power

DC power supply:

Wattage . . . . . . . . . . . . . . . 500 W

Heat dissipation. . . . . . . . . 600 BTUs (nominal)

Voltage . . . . . . . . . . . . . . . 90 to 265 VAC at 50 or 60 Hz

Backup battery . . . . . . . . . . . . 3-V CR2450N coin cell

Physical

Height . . . . . . . . . . . . . . . . . . . 52.5 cm (21 inches)

Width. . . . . . . . . . . . . . . . . . . . 39.4 cm (15.75 inches)

Depth. . . . . . . . . . . . . . . . . . . . 57.5 cm (23 inches)

Weight . . . . . . . . . . . . . . . . . . 45 kg (100 lb) or more, depending on options

installed

Environmental

Temperature:

Operating . . . . . . . . . . . . . 10° to 35°C (50° to 95°F)

Storage . . . . . . . . . . . . . . . –40° to 65°C (–40° to 149°F)

Relative humidity . . . . . . . 8% to 80% (noncondensing)

Maximum vibration:

Operating . . . . . . . . . . . . . 0.25 G at 3 to 200 Hz for 30 min

Storage . . . . . . . . . . . . . . . 0.5 G at 3 to 200 Hz for 30 min

Maximum shock:

Operating . . . . . . . . . . . . . half-sine wave form: 50 G for 2 ms

Storage . . . . . . . . . . . . . . . half-sine wave form: 110 G for 2 ms;

square wave form: 27 G for 15 ms

System Overview 1-27

Table 1-5. Technical Specifications (continued)

Environmental (continued)

Altitude:

Operating . . . . . . . . . . . . . –16 to 3048 m (–50 to 10,000 ft)

Storage . . . . . . . . . . . . . . . –16 to 10,600 m (–50 to 35,000 ft)

z

1-28 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

Chapter 2

Basic Troubleshooting

This chapter describes basic troubleshooting procedures that can help you

diagnose a computer system problem. These procedures can often reveal the
source of a problem or indicate the correct starting point for troubleshooting the
system. (A brief explanation of how to load and start the system diagnostics is
located near the end of this chapter.) Dell recommends that you perform the fol­lowing procedures in the order they are presented in this manual.

Initial User Contact

When you first contact a user who has a problem, ask the user to describe the
problem and the conditions under which it occurs. A verbal description can
often indicate the cause of a problem or else the appropriate troubleshooting
procedure to use. After the user describes the problem, follow these steps:

1. Ask the user to back up any data on the hard-disk drive if the system’s
condition permits.

Appendix C, “Maintaining the System,” in the User’s Guide provides infor­mation about backing up data.

2. Ask the user to try to duplicate the problem by repeating the operations
he or she was performing at the time the problem occurred.

Can the user duplicate the problem?

Yes. Proceed to step 3.
No. Proceed to the next section, “External Visual Inspection.”

3. Observe the user to determine if he or she is making an error, such as
typing an incorrect key combination or entering a command
incorrectly.

Is the problem a result of user error?
Yes. Instruct the user in the proper procedure, or direct him or her to the

appropriate user documentation for the correct procedure.
No. Proceed to the next section, “External Visual Inspection.”

Basic Troubleshooting 2-1

External Visual Inspection

The external visual inspection consists of a quick inspection of the exterior of
the computer, the monitor, the keyboard, any peripherals, and cables. While per­forming the visual inspection, make any necessary corrections. To perform the
external visual inspection, follow these steps:

1. Turn off the computer, the monitor, and all peripherals.

2. Verify that all power cables are properly connected to the computer, the
monitor and peripherals, and their power sources.

3. Verify that the keyboard and mouse interface cables are firmly
attached to the proper connectors on the back of the computer.

For a PS/2-compatible mouse, the keyboard and mouse interface cable con­nectors are identical except for their labels (see Figure 1-5).

For a serial mouse, the mouse interface cable must be attached to one of the
serial port connectors, and its captive screws must be secure enough to
ensure a firm connection.

4. Verify that any devices attached to the serial and parallel port connec­tors are properly connected.

Each of the serial and parallel interface cables must be attached to an appro­priate connector on the back of the computer as well as to the interface
connector on the device. The captive screws that secure these connectors at
each end of the interface cable must be secure enough to ensure a firm
connection.

5. Verify that the video interface cable is firmly attached to the connector
on the I/O panel and to the connector on the back of the monitor.

For proper connection of the video interface cable, see the documentation
for the monitor.

6. Inspect all external monitor controls for any obvious damage or
improper settings.

For proper settings of the video monitor controls, see the documentation for
the monitor.

7. Inspect the keyboard to ensure that no keys are sticking.

If one or more keys are sticking, it may be necessary to replace the
keyboard.

8. Inspect the exterior of the computer, including all controls and indica­tors, and all user-accessible data storage devices for any signs of
physical damage.

Does the inspection reveal any problems?
Yes. Proceed to the appropriate procedure in Chapter 4, “Removing and

Replacing Parts.”
No. Proceed to the next section, “Observing the Boot Routine.”

2-2 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

Observing the Boot Routine

After you have performed an external visual inspection as described in the pre­vious section, you should boot the system and, while the boot routine is
running, observe the system for any indications of problems.

NOTE: Most of the steps in this procedure require observation of system func­tions and indications, some of which can occur simultaneously. It may be
necessary to reboot the system several times in order to complete all of these
steps.

To observe problem indications during the boot routine, follow these steps:

1. If the system is off, turn on all peripherals and the computer. Insert the
Dell Server Assistant CD into the CD-ROM drive. Press the reset but­ton or <Ctrl><Alt><Del> to reboot the system.

2. Check the power supply fans.

Do the fans run normally?

NOTE: The center fan is normally off, unless another fan has failed or is
unplugged, or the temperature of the computer is too high.

Yes. Proceed to step 3.
No. Troubleshoot the system power supply.

3. Watch the Num Lock, Caps Lock, and Scroll Lock indicators on the
upper-right corner of the keyboard. After all three indicators flash
momentarily, and following a long pause (approximately 30 seconds),
the Num Lock indicator should light up and remain on.

Do these indicators flash on and off within approximately 10 seconds after
the boot routine starts?

Yes. Proceed to step 4.
No. Troubleshoot the system power supply . If the troubleshooting procedure

indicates that the system power supply is operational, troubleshoot the
memory.

4. During the boot routine, observe the computer for any of the following:

• Beep codes: A beep code is a series of beeps that indicates an error con-

dition. If the system emits a beep code, see Table 3-1.

NOTE: The system beeps once during the boot routine. This single beep is
normal and is not a beep code.

• System error messages: These messages can indicate problems or pro-

vide status information. If a system error message is displayed, see
Table 3-2.

• Diskette-drive and hard-disk drive activity indicators: These indicators

light up in response to data being transferred to or from the drives. If
either of these indicators fails to light up during the boot routine, trouble­shoot the diskette drive or hard-disk drive subsystem, as appropriate.

Basic Troubleshooting 2-3

5. Observe the monitor screen for the Dell Server Assistant Menu.

Does the menu appear?

Yes. See “Running the System Diagnostics” found later in this chapter.
No. Proceed to the next section, “Internal Visual Inspection.”

Internal Visual Inspection

CAUTION: Before you proceed with the internal visual inspection
described in this section, ensure that the user has saved all open files and
exited all open application programs if possible.

A simple visual inspection of a computer’s interior hardware can often lead to the
source of a problem, such as a loose expansion card, cable connector, or mounting screw .
When you perform the visual inspection, refer to “System Features” in Chapter 1 to locate
components in the inspection procedure.

To perform the internal visual inspection, follow these steps:

1. Turn off the system, including any attached peripherals, and disconnect
all the AC power cables from their power sources.

2. Remove the left computer cover.

3. Verify that all DIMMs and expansion cards as well as the micro­processor(s) and battery are fully seated in their sockets or connectors.

WARNINGS: The microprocessor can get extremely hot. Be sure the
chip has had sufficient time to cool before you touch it.

To maintain proper air flow and prevent the system from overheat­ing, each power supply bay must have either a power supply or the
power closeout panel installed.

To ensure that the chips are fully seated in their sockets, press firmly on the
top of each chip.

To reseat a microprocessor, first remove it from its socket and then reinstall
it as described in “Microprocessor and Heat Sink” in Chapter 4.

To reseat a DIMM, remove it from its socket and reinstall it as described in
“DIMMs” in Chapter 4.

If you need to reseat an expansion card, use a 1/4-inch nut driver to remove
the screw that secures the card-mounting bracket. Grasp the card by its top
corners, and carefully pull it out of its connector. Reinsert the card in its
connector, and carefully push it in until fully seated. Then reinstall the card­mounting bracket’s retaining screw.

2-4 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

4. Verify that all jumpers are set correctly.

For information about these jumpers, see “System Board Jumpers” in Chap­ter 1.

5. Check all cable connectors inside the computer to verify that they are
firmly attached to their appropriate connectors.

6. Reinstall the computer cover.

7. Reconnect the computer and any attached peripherals to their power
sources, and turn them on.

Does the problem appear to be resolved?

Yes. No further steps are necessary. Terminate the procedure.
No. Proceed to the next section, “Eliminating Resource Conflicts,” and to

“Getting Help” found later in this chapter.

Eliminating Resource Conflicts

Devices within the computer may require dedicated memory spaces, interrupt
levels, or DMA channels, all of which must be allocated during installation of
the devices. Because a device may be installed at a different time, it is possible
that the same resource is assigned to two or more devices.

Resource conflicts can result in disorderly or erratic system operation or failure
of the system to operate at all. If you suspect that resource conflicts might exist,
check the system and reassign the resources as necessary.

Running the System Diagnostics

The system diagnostics (included on the Dell Server Assistant CD) contains
tests that aid in troubleshooting all major components of the computer system.

To start the diagnostics, insert the CD into the CD-ROM drive, and then press
the reset button on the computer.

Restarting the computer causes the Dell Server Assistant logo screen to appear
on the monitor screen, followed by a screen containing icons of the options
available. Selecting the Run System Utilities icon brings up a screen with the
diagnostics icon. Before the Dell Server Assistant loads, a program tests the
portion of main memory (RAM) required for loading the diagnostics. If a main
memory error is detected, a message telling you which DIMM has failed
appears on the screen.

Basic Troubleshooting 2-5

If no errors are found in main memory, and the Dell Server Assistant loads,
select the Run System Utilities icon. Then select the Run System Diagnostics
icon by pressing <Enter>. The Diagnostics Menu appears, allowing you to
choose the following options or exit to MS-DOS:

• Run All Tests — Runs all tests for a thorough check of the system

• Run Quick Tests — Runs selected tests from all test groups to quickly locate

a failure or to indicate where further testing is needed to isolate a failure

• Run Specific Tests — Tests a particular area or subsystem

Getting Help

If none of the troubleshooting procedures in this chapter or the tests in the
system diagnostics reveals the source of the problem or leads to the proper trou­bleshooting steps for determining the source of the problem, call Dell for
technical assistance. For instructions, see Chapter 11, “Getting Help,” in the
Installation and Troubleshooting Guide.

2-6 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

Chapter 3

Beep Codes and Error Messages

This chapter describes beep codes and system error messages that can occur

during system start-up or, in the case of some failures, during normal system
operation. The tables in this chapter list faults that can cause a beep code or sys­tem error message to occur and the probable causes of the fault in each case.

If a faulty system does not emit beep codes or display system error messages to
indicate a failure, you should use the CD-based diagnostics to run the appropri­ate tests to help isolate the source of the problem. See “Running the System
Diagnostics” in Chapter 2.

POST Beep Codes

If the monitor cannot display error messages during the POST, the system may
emit a series of beeps that identifies the problem or that can help you identify a
faulty component or assembly. T able 3-1 lists the beep codes that may be gener­ated during the POST. Most beep codes indicate a fatal error that prevents the
system from completing the boot routine until the indicated condition is
corrected.

When the system emits a beep code, record the code and then find it in
Table 3-1. If the table does not lead to the source of the problem, run the appro­priate tests in the CD-based diagnostics to assist in troubleshooting the problem.

Table 3-1. Beep Codes

Beep Code Error Probable Causes

1-2 Invalid expansion-card

ROM checksum

1-2-2-3 Invalid BIOS ROM

checksum

1-3-1-1 DRAM refresh failure Defective DIMMs or system

1-3-1-3 Keyboard controller

error

Improperly seated expan­sion card, or system needs to
be rebooted.

Corrupted BIOS firmware
or defective system board.

board. Reseat DIMMs or
replace system board.

Defective DIMMs or system
board. Reseat DIMMs or
replace system board.

Beep Codes and Error Messages 3-1

Table 3-1. Beep Codes (continued)

Beep Code Error Probable Causes

1-3-3-1 No DIMM memory

installed

Defective DIMMs or system
board. Reseat DIMMs or
replace system board.

1-3-4-1 DRAM failure Defective DIMMs or system

board. Reseat DIMMs or
replace system board.

1-3-4-3 DRAM failure Defective DIMMs or system

board. Reseat DIMMs or
replace system board.

1-4-1-1 DRAM failure Defective DIMMs or system

board. Reseat DIMMs or

replace system board.
1-4-2-1 CMOS failure Defective system board.
1-4-3-1 Memory controller or

DIMM failure

Defective DIMMs or system

board. Reseat DIMMs or

replace system board.
2-2-3-1 Unexpected interrupt Improperly seated expan-

sion card, or system needs to

be rebooted.
3-2-2-1

Gate A20 failure Defective system board.

4-2-4-4
4-2-4-3 Keyboard controller

error

Defective DIMMs or system

board. Reseat DIMMs or

replace system board.

3-2 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

System Error Messages

Table 3-2 lists system error messages that can appear on the monitor screen.
These messages can help you find the source of a problem. Some of these error
messages indicate fatal errors. When a fatal error occurs, the system cannot usu­ally be rebooted until an appropriate hardware change has been made.

Table 3-2. System Error Messages

Message Definition Action

System bat­tery is dead

- Replace
and run
Setup

System CMOS
checksum
bad - Run
Setup

Incorrect
drive A t ype

- Run Setup
Incorrect
drive B type

- Run Setup
Keyboard

error
Stuck key

System/
Shadow RAM
failed at
offset:

System battery is
dead.

Configuration data
is corrupted.

Diskette drive does
not match diskette
drive type stored in
configuration data.

Cable may be loose,
or keyboard may be
faulty.

One or more
DIMMs may be
improperly seated or
faulty.

Replace battery and
run System Setup pro­gram.

Run System Setup pro­gram to restore your
system configuration.

Run System Setup pro­gram to restore your
system configuration.

Defective keyboard,
keyboard cable, or
system board.

Reseat or replace
DIMMs.

Operating
system not
found

System
cache error

- Cache dis­abled

System
timer error

System did not find
bootable operating
system.

Microprocessor chip
malfunctioned.

Chip on system
board malfunc­tioned.

Use diskette with
bootable operating
system in drive A, or
load bootable
operating system
from hard-disk drive.

Defective micro­processor or system
board.

Defective micro­processor or system
board.

Beep Codes and Error Messages 3-3

Table 3-2. System Error Messages (continued)

Message Definition Action

Real-time
clock error

Keyboard
controller
error

EISA con­figuration
NVRAM bad

EISA con­figuration
error

Invalid CPU
speed
detected ­check
jumpers

Real-time clock on
system board mal­functioned.

Cable may be loose,
keyboard may be
faulty, or keyboard
controller is defec­tive.

EISA jumper may
have been acciden­tally installed.

EISA configuration
data in NVRAM
does not match the
installed EISA
expansion cards.

Microprocessor
speed jumper plug
may be absent or
installed on wrong
jumper pins.

Defective micro­processor or system
board.

Defective keyboard,
keyboard cable, or
system board.

Ensure EISA jumper
is removed; then
reboot system and
restore EISA configu­ration.

Ensure EISA expan­sion cards are seated
properly; then run
EISA Configuration
Utility.

Check the micro­processor speed
jumpers.

Resource
conflict
Warning:
IRQ not
initialized

Expansion
ROM not
initialized

System con­figuration
data write
error

System mem­ory size has
changed ­Run Config­uration
Utility

BIOS detected a
resource conflict
while configuring
Plug and Play ISA
or PCI expansion
card.

System board may
be malfunctioning.

DIMM was added or
removed. DIMMs
are improperly
seated.

See “Eliminating
Resource Conflicts”
in Chapter 2.

Defective system
board.

More memory was
added. Make sure
DIMMs are properly
seated; run EISA
Configuration Utility.

3-4 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

Table 3-2. System Error Messages (continued)

Message Definition Action

Stepping of
CPU1 is less
than sA1 ­System halted.

Stepping of
CPU2 is less
than sA1 ­System halted.

Stepping of
CPU is less
than sA1 ­System halted.

Nonidentical
CPUs - System
halted.

Invalid CPU
speed detected

- Check speed
jumpers.
System halted.

Wrong microprocessor
installed in
PROCESSOR1 socket.

Wrong microprocessor
installed in
PROCESSOR2 socket.

Wrong microprocessor
installed in system.

Cache memory sizes of
the two Pentium Pro
microprocessors do not
match.

The microprocessor
speed detected is neither
180 MHz or 200 MHz.

Replace microprocessor
with sA1 stepping or
greater.

Replace microprocessor
with sA1 stepping or
greater.

Replace microprocessor
with correct sA1 step­ping or greater.

Replace one of micropro­cessors so that cache size
of both microprocessors
matches.

Check microprocessor
speed jumpers.

Power supply
paralleling
board firm­ware download
failed

System back­plane firm­ware download
failed

Embedded
server manage­ment firmware
download
failed

Server-management bus
cable connection to
SCSI backplane board is
loose.

Embedded server
management memory
temporarily corrupted.

Check server­management bus cable
connections to system
board (labeled “SMB
BACKPLANE”) and
SCSI backplane (labeled
“SMB”). Turn off and
then restart system.

Turn off and then restart
the system.

Beep Codes and Error Messages 3-5

3-6 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

Chapter 4

Removing and Replacing Parts

This chapter provides procedures for removing the components, assemblies,

and subassemblies in the system unit. Unless otherwise noted, each procedure
assumes the following:

• You have performed the steps in “Precautionary Measures” found later in

this chapter.

• You have removed the computer covers.

• You can replace or reinstall a part by performing the removal procedure in

reverse order unless additional information is provided.

Recommended Tools

Most of the procedures in this chapter require the use of one or more of the fol­lowing tools:

• Small flat-blade screwdriver

• Wide flat-blade screwdriver

• Number 1 and number 2 Phillips-head screwdrivers

• Chip-removal tool

• 1/4-inch nutdriver

• Tweezers or long-nose pliers

• Small plastic scribe

Also, use a wrist grounding strap as explained in the next section, “Precaution­ary Measures.”

Removing and Replacing Parts 4-1

Precautionary Measures

6)

Before you perform any of the procedures in this chapter, take a few moments
to read the following warning for your personal safety and to prevent damage to
the computer system from ESD.

WARNING FOR YOUR PERSONAL SAFETY AND PROTECTION
OF THE EQUIPMENT: Only service technicians trained by Dell should
perform the following procedures. Before you start to work on the com­puter, perform the following steps in the sequence listed.

1. Turn off the computer and any attached peripherals.

2. Disconnect the computer and any attached peripherals from their

power sources to reduce the potential for personal injury.

3. Disconnect any communications cables.

4. Wear a wrist grounding strap, and clip it to an unpainted metal sur-

face, such as a part of the back panel, on the computer chassis.
If a wrist grounding strap is not available, touch the fan guard or

some other unpainted metal surface on the back of the computer to
discharge any static charge from your body.

Computer Covers

screw (

Figure 4-1. Computer Covers Removal

4-2 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

To remove a computer cover, follow these steps:

keylock (2)

1. Turn the cover’s keylocks on the back panel of the computer to the
unlocked position (see Figure 4-2).

Figure 4-2. Keylocks on Computer’s Back Panel

2. Loosen the three screws along the back edge of the cover (see
Figure 4-1).

3. Slide the cover toward the back of the computer an inch or so. Then
grasp the top of the cover at both ends, and lift it straight away from the
chassis.

Removing and Replacing Parts 4-3

Front Bezel

tab (4)

front bezel

Figure 4-3. Front Bezel Removal

To remove the front bezel, follow these steps:

1. Remove the computer covers.

2. Release the two tabs on each side of the bezel.

3. Slide the front bezel toward the front of the computer.

4-4 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

Drives

3.5-inch diskette drive

Figure 4-4 shows an example of drive hardware that can be installed in the com­puter. Refer to this figure when you perform any of the procedures in the
following subsections.

DC power cable

SCSI2 CD-ROM

diskette/tape drive
interface cable

drive

SCSI hard-disk
drive bay (6)

SCSI backplane
board

diskette drive interface
connector (FLOPPY)

SCSI connector
(SCSI2 CD-ROM)

SCSI connector
(BACKPLANE SCSI1)

Figure 4-4. Drive Hardware

SCSI interface
cable

system board

Removing and Replacing Parts 4-5

Front-Panel Inserts

front-panel insert

tab (2)

latch (2)

back of the
front bezel

Figure 4-5. Front-Panel Insert Removal

To remove a front-panel insert, follow these steps:

1. Remove the front bezel.

2. From the back of the front bezel, press against the center of the insert
until the tabs come loose from the bezel.

3. Pull the insert out of the bezel.

To replace a front-panel insert, position the insert over the bay opening from the
inside of the front bezel and carefully press the insert into place. A tab on each
side of the insert snaps into a corresponding latch on the inside of the front
bezel.

4-6 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

Externally Accessible Drives

3.5-inch diskette
drive in top bay

CD-ROM drive in
middle bay

lower-bay drive
position for optional
drive

drive-release
tab(2)

Figure 4-6. Externally Accessible Drives Removal

All of the externally accessible drives have drive-mounting rails. To remove a
drive assembly from one of the externally accessible drive bays, follow these
steps:

1. Disconnect the DC power cable and the interface cable from the back of
the drive.

Be sure to record the power connector number and interface cable connector
identification.

2. Press inward (toward center of drive) on the two drive-release tabs, and
slide the drive out of the bay.

Removing and Replacing Parts 4-7

3. Remove the drive-mounting rails from the drive (see Figure 4-7).

drive-release tabs

drive-mounting

rails (2)

Figure 4-7. Drive-Mounting Rails Removal

4. If the drive is a SCSI drive, record the setting of the SCSI address
jumpers and SCSI bus termination jumper.

Some drives use an adapter between the SCSI cable and the drive connector.
Check the back of the old drive for an adapter. If present, remove the
adapter and retain it for use on the new drive.

When reinstalling the SCSI drive, set the SCSI address jumpers and the
SCSI bus termination jumpers to the settings you recorded.

4-8 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

Hard-Disk Drives

drive bay

plastic drive handle

Figure 4-8. Hard-Disk Drive Carrier Removal

The hard-disk drives are mounted inside a hard-disk drive carrier. The hard-disk
drive carrier must be removed before a hard-disk drive can be removed. To
remove a hard-disk drive, follow these steps:

NOTES: Wait 20 seconds for the hard-disk drive to spin down before removing
the hard-disk drive carrier.

Hard-disk drives can be removed with the power on if a PowerEdge Expand­able RAID Controller host adapter card is installed.

1. If a PowerEdge Expandable RAID Controller host adapter card is
installed in the computer, wait until the three indicators are off, and
then proceed to Step 2 (refer to Chapter 6, “Installing SCSI Hard-Disk
Drives,” in the User’s Guide for more information). If this host adapter
card is not installed in the computer, turn off the system before pro­ceeding to Step 2.

2. Release the carrier by pulling down on the plastic drive handle.

3. Slide the drive carrier toward the front of the computer until it is free of
the drive bay.

4. Turn the drive carrier over, and place it on a flat work surface.

Removing and Replacing Parts 4-9

hard-disk drive

connector

screw (4)

Figure 4-9. Hard-Disk Drive Removal

carrier

5. Remove the four mounting screws that attach the hard-disk drive to the
carrier.

6. Disconnect the hard-disk drive from the connector on the back of the
carrier, and lift the drive from the carrier.

CAUTION: When disconnecting the hard-disk drive from the con­nector, grasp the connector, not the cable, to avoid damaging the
connector.

After you replace the drive and reinstall the carrier in the bay, turn on the sys­tem. The online indicator (green) lights, indicating power is being supplied to
the hard-disk drive. With the controller connected, the activity LED is activated
when the controller spins up the drive.

4-10 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

SCSI Backplane Board

hard-disk drive
carrier

thumb screw

hook (10)

SCSI backplane board

Figure 4-10. SCSI Backplane Board Removal

To remove the SCSI backplane board, follow these steps:

1. Disconnect the hard-disk drive carrier connectors from the SCSI back­plane board by sliding each carrier toward the front of the computer
approximately 1 inch.

2. Disconnect all cables from the SCSI backplane board.

3. Unscrew the thumb screw.

4. Disengage the board from the ten hooks holding the board to the com­puter chassis, and lift the board away from the computer.

An insulator (similar to the one for the power-supply paralleling board in
Figure 4-12) is attached to the back of the SCSI backplane board with two
adhesive strips.

Removing and Replacing Parts 4-11

Power Supply

The computer may have one or two power supplies.

Figure 4-11. Power Supply Removal

To remove a power supply, follow these steps:

power closeout
panel

power supply
(optional)

power supply

cable strain
relief

insertion screw

AC power cable
connector

locking switch

WARNING: In a redundant system, you can remove and replace a power
supply without turning off the system. When doing so, be careful not to
touch any of the connectors on the power-supply paralleling board.

CAUTION: To maintain proper airflow and prevent the system from
overheating, each power supply bay must have either a power supply or
a power closeout panel installed.

1. Turn the locking switch on the power supply to the Off position
(marked by a “0”).

2. Unhook the cable strain relief to free the AC power cable.

3. Disconnect the AC power cable from the power outlet; then disconnect
the other end of the cable from the power supply.

4. Turn the insertion screw counterclockwise to release the power supply.

5. Slide the power supply out of the chassis.

To replace a power supply, perform these steps in reverse order.

4-12 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

Power-Supply Paralleling Board

cables

thumb screw

power supply (2)

power-supply
paralleling board
insulator

hook slots (11)

power-supply
paralleling board

Figure 4-12. Power-Supply Paralleling Board Removal (Redundant
Systems)

To remove a power-supply paralleling board, follow these steps:

WARNING: Disconnect both power supplies from their AC power
source to prevent the possibility of getting shocked.

1. Disconnect the power supplies from the power-supply paralleling board
by sliding each power supply toward the back of the computer approxi­mately 1 inch.

2. Disconnect all cables from the power-supply paralleling board.

3. Unscrew the thumb screw.

4. Disengage the board from the eleven hooks holding it to the computer
chassis, and then lift the board away from the computer.

Removing and Replacing Parts 4-13

Power Connector Panel

power supply

retainer
screw

power
connector
panel
cables (5)

power
connector
panel

hook slots (4)

Figure 4-13. Power Connector Panel Removal (Nonredundant
Systems)

To remove the power connector panel, follow these steps:

1. Disconnect the power supply from the power connector panel by sliding
the power supply toward the back of the computer approximately
1 inch.

2. Disconnect all power connector panel cables (from the system board,
the SCSI backplane board, and so forth).

3. Unscrew the retainer screw.

4. Disengage the panel from the four hooks holding it to the computer
chassis, and then lift the panel away from the computer.

4-14 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

Control Panel

screw

control panel

connector BP_to_CP

Figure 4-14. Control Panel Removal

To remove the control panel, follow these steps:

1. Remove the screw holding the control panel to the chassis.

2. Disconnect the cable from connector BP_to_CP.

3. Disengage the panel from the four hooks holding the panel to the
computer chassis, and lift the panel away from the computer.

Removing and Replacing Parts 4-15

Cooling Fans

fan carrier

catch

cooling fan

retention
tab (2)

Figure 4-15. Cooling Fan Removal

To remove a cooling fan, follow these steps:

NOTES: This procedure can be performed with the computer turned on.
The middle fan is normally turned off by server management; this fan is turned

on only if one of the other fans fails.

1. Remove the left computer cover.

2. Disconnect the cooling fan’s power cable from its respective FAN con­nector on the system board.

3. Press down the catch on the fan carrier, and remove the fan carrier
from the chassis.

4. Remove the cooling fan from the fan carrier by releasing the two fan
retention tabs inside the carrier.

4-16 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

System Board Components

socket (PROCESSOR

Ultra/Narrow SCSI host adapter

Ultra/Wide SCSI host adapter

The subsections that follow contain procedures for removing system board
components.

diskette/tape drive interface
connector (FLOPPY)

connector (SCSI2 CD-ROM)

connector (BACKPLANE SCSI1)

EISA connectors
(EISA1 [top], EISA2,
and EISA3)

PCI connectors
(PCI4 [top]–PCI8)

battery connector
(BATTERY)

video connector
(MONITOR)

server-management
serial port connector
(REMOTE)

parallel port connector
(PARALLEL)

serial port 2 connector
(SERIAL2)

serial port 1 connector
(SERIAL1)

mouse connector
(MOUSE)

keyboard connector
(KEYBOARD)

secondary microprocessor

2)

power supply connector
(POWER2)

power supply connector
(POWER1)

front of
system board

DIMM sockets
(DIMM A [top]–DIMM H)

fan connectors
(FAN1, FAN2, FAN3)

speed and configuration
jumpers

primary microprocessor
socket (PROCESSOR1)

power supply connector
(POWER3)

server-management bus
connector (SMB BACKPLANE)

Figure 4-16. System Board Components

Removing and Replacing Parts 4-17

Expansion Cards

card-slot opening

card-mounting
bracket

retaining screw

expansion card

locking card guide

Figure 4-17. Expansion Card Removal

To remove an expansion card, follow these steps:

1. Remove the left computer cover.

2. Disconnect any cables connected to the expansion card.

3. Remove the retaining screw from the card-mounting bracket.

4. If the card is a full-length expansion card, unlock the locking cam on
the locking card guide.

5. Grasp the expansion card by its corners, and carefully remove it from
the expansion-card connector.

4-18 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

DIMMs

1.

1.

DIMM

securing clip (2)

2.

Figure 4-18. DIMM Removal

To remove a DIMM, push outward on the DIMM socket’s securing clips until the
DIMM is released from its socket. Then lift the DIMM away from the socket.

DIMM

securing clip (2)

2.

Figure 4-19. DIMM Installation

To replace a DIMM, push outward on the securing clips at each end of the
socket until they snap open. Orient the DIMM to the socket, and press the
DIMM straight down into the socket slot until the securing clips snap into place
around both ends of the DIMM.

Removing and Replacing Parts 4-19

Microprocessor and Heat Sink

clip

heat sink

thermal pad
(bonded to heat sink)

microprocessor
socket

microprocessor

pin-1 corner of socket

front tab

Figure 4-20. Microprocessor Configuration

The computer may have two microprocessors. To remove a microprocessor and
heat sink, follow these steps:

1. Remove the microprocessor securing clip from the microprocessor/heat
sink assembly.

WARNING: The microprocessor chip can get extremely hot during
system operations. Be sure the chip has had sufficient time to cool
before touching it.

Press down on the folded part of the clip with a small screwdriver to release
the clip (see Figure 4-21).

4-20 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

heat sink

microprocessor chip

release lever

press here to
release clip

microprocessor
securing clip
hooks over tabs
on socket
(front and back)

microprocessor
socket

microprocessor

Figure 4-21. Microprocessor Securing Clip

2. Remove the heat sink.

3. Push outward and then upward on the microprocessor release lever to

rotate the lever to its fully vertical position.

CAUTION: Be careful not to bend any of the pins when removing
the microprocessor chip from its socket. Bending the pins can per­manently damage the microprocessor chip.

Figure 4-22. Removing a Microprocessor

microprocessor socket

release lever

Removing and Replacing Parts 4-21

4. Lift the microprocessor out of its socket.

(gold finger and bevel)

To install the replacement microprocessor/heat sink assembly , ensure that the micro­processor release lever is in its fully vertical position to allow the microprocessor pins
to easily slip into the socket. When the microprocessor/heat sink assembly is in place,
rotate the microprocessor release lever to its horizontal position. Hook the micro­processor securing clip over the socket tab nearest the front of the system board, and
then snap it over the tab on the back of the socket.

pin-1 corner

Figure 4-23. Pin-1 Identification

NOTE: Pin 1 on the microprocessor is located on the corner with the largest
bevel. The pin-1 hole in the microprocessor socket is located on the corner
where the holes are in a diagonal pattern.

If you are installing a new microprocessor and heat sink, place the thermal

interface pad that comes with the replacement microprocessor between the
microprocessor and the heat sink before reinstalling the securing clip.

4-22 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

System Battery

battery

BATTERY socket

Figure 4-24. System Battery Removal

To remove the system battery, follow these steps:

1. If possible, enter the System Setup program, and make a printed copy
of the system setup screens.

2. Remove the left computer cover.

See “Computers Covers” found earlier in this chapter.

3. Remove the battery.

Pry the battery out of its socket with your fingers or with a blunt, noncon­ducting object, such as a plastic screwdriver.

To replace the system battery, follow these steps.

WARNING: The new battery can explode if installed incorrectly. Be
careful to replace the battery as instructed in the following procedure. In
addition, replace the old battery only with one of the same or an equiva­lent type, as recommended by the manufacturer. Discard the old battery
according to the manufacturer’s instructions.

1. Orient the new battery with the “+” facing up. Insert the battery into its
socket, and snap it into place.

2. Start the System Setup program, and reset the Time and Date categories.

Also, compare the system configuration information with the copy of the
system configuration settings you made in step 1 of the removal procedure. Restore
any system configuration information that was lost while replacing the battery.

Removing and Replacing Parts 4-23

System Board

system board

slot (13)

screw

Figure 4-25. System Board Removal

To remove the system board, follow these steps:

1. Disconnect all cables from their connectors at the back of the system
unit.

2. Remove all expansion cards.

3. Disconnect all cables from the system board.

4. Remove the system board as follows:

a. Remove the screw that secures the system board to the vertical wall of

the computer chassis.

b. Slide the system board toward the front of the computer approximately

1/2 inch to release the board from the 13 slots in the computer chassis.

c. Lift the system board out of the computer.

If you are replacing a system board, remove the DIMMs, the microprocessor(s),
and the expansion card from the old system board and install them on the
replacement board.

4-24 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

Appendix A

System Setup Program

This appendix describes the System Setup program, which is used to set or

change the system configuration information stored in NVRAM on the system
board.

To enter the System Setup program, press <F2> during the power-on self-test
(POST).

If you wait too long, the operating system begins to load into memory and you
cannot enter the System Setup program. Let the system complete the load operation;
then shut down the system and try again.

NOTE: To ensure an orderly system shutdown, consult the documentation that
accompanied the operating system.

System Setup Screens

The System Setup program is a menu-driven program. Use the left- and right­arrow keys to move between the following four menus:

• Main menu — Provides settings for the basic system configuration

• Advanced menu — Provides detailed settings for some system features

• Security menu — Provides settings for password status, diskette access,

virus check reminder, and system backup reminder

• Exit menu — Provides settings for saving and loading the configurations

and options

In addition to the initial menu selections, some selections have submenus.
These selections are identified by an arrow to the left of the selection.

Screen Conventions

Information on the System Setup screens is organized in four boxed areas (see
Figure A-1):

• Title box — Contains information about the system and menu selections

• Configuration options and system data box — Lists configuration categories

(left column) and settings or information (right column)

• Help box — Displays item-specific help for the category whose field is cur-

rently highlighted

• Key functions box — Lists the System Setup keys and their functions

System Setup Program A-1

Key Functions

Table A-1 lists the System Setup keys and their functions.

Table A-1. Key Functions

Key Combination Function

<F1> or <Alt><h> Displays the general help window
<Esc> Displays the Exit menu, or the parent

menu if you are in a submenu

Left-arrow key or

Selects a different menu

right-arrow key
Up-arrow key or

Moves the cursor up or down

down-arrow key
<Tab> Moves the cursor to the next field
<Shift><Tab> Moves the cursor to the previous field
<Home> or <End> Moves the cursor to the top or bottom of

the window
<F5> or <-> Selects a lower value for the field
<F6> or <+> or

Selects a higher value for the field
<Spacebar>

<F9> Sets the default configuration values for

the current menu
<Alt><d> Loads the default System Setup values for

all menus
<F10> Loads previously stored configuration

values for the current menu
<Enter> Executes a command or selects a

submenu
<Alt><r> Refreshes the screen

A-2 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

Screen Color Combinations

configuration options

and system data box

title box

help box

In addition to its text, a field’s color identifies the type of information it con­tains, as follows:

• Black on cyan — Headers and footers, including the title box at the top of

the screen and the key functions box at the bottom of the screen.

• Blue on white — Configuration information that cannot be changed by the

user, such as category titles.

• Black on white — Fields that can be changed by the user, but are not

selected. Also used for help messages.

• Bright white on white — The highlight color for a category title that is

selected. Also used to highlight the function keys in the key functions box.

• White on black — The highlight color for an input field that is selected.

Main Menu

Dell System PowerEdge 4100/200 Setup

Main Advanced Security Exit

Time: [5:01:96]
Date: [May 04, 1996]
Diskette Drive A: [1.44 MB, 3.5 inch]
Diskette Drive B: [Not Installed]
Fast Video BIOS: [On and Cached]
Memory Cache: [Enable]
Boot Sequence: [A: then C:]
Num Lock: [On]
Speaker: [On]

Processor 1: Pentium Pro 200
Processor 2: Pentium Pro 200
Level 2 Cache: 512 KB

Base Memory: 640 KB
Extended Memory: 63 MB
Video Memory: 1 MB
Service Tag: AB12Z
Asset Tag: 123456789A

F1 Select ItemHelp -/+ Change Values F9 Setup Defaults
ESC Exit Select Menu Enter Select Sub-Menu F10 Previous Values

key functions box

BIOS Version AXX

Item Specific Help

Resets the time on the
computer’s internal
clock. Time kept in a
24-hour format. Press
<Tab>, <Shift-Tab>,
or <Enter> selects
fields

Figure A-1. Main Menu

System Setup Program A-3

Table A-2. Main Menu Categories

Category Function

Time Resets time on system’s internal clock.
Date Resets date on system’s internal calendar.
Diskette Drive A or

Diskette Drive B

Identifies type of diskette drives installed.
Category options always match physical
locations of drives in system. T ape drives are
not reflected in these categories.

Fast Video BIOS Enables shadowing and caching the BIOS

for the video controller.

Memory Cache Enables or disables the cache memory in

the microprocessor.

Boot Sequence Displays a submenu. See the next subsec-

tion, “Boot Options Submenu.”

Num Lock Determines whether keyboard’s Num Lock

mode is activated at boot.
Speaker Enables or disables the system speaker.
Processor 1 Displays type of microprocessor installed

in PROCESSOR1 socket.
Processor 2 Displays type of microprocessor installed

in PROCESSOR2 socket.
Level 2 Cache Displays amount of level-2 cache memory

in the microprocessor.
Base Memory Displays amount of memory available to

MS-DOS programs that do not use

extended or expanded memory.
Extended Memory Displays amount of memory available as

extended memory.
Video Memory Displays amount of video memory

installed on the system board.
Service Tag Displays system’s five-character service

tag number.
Asset Tag Displays the asset tag number, up to ten

characters, if one is assigned.

A-4 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

Boot Options Submenu

Dell System PowerEdge 4100/200 Setup

Main Advanced Security Exit

Boot Options

Boot Sequence: [A: then C:]
Setup Prompt: [Enabled]
POST Errors: [Enabled]
Diskette Drive Check: [Enabled]
Reset Button: [Enabled]

F1 Select ItemHelp -/+ Change Values F9 Setup Defaults
ESC Exit Select Menu Enter Select Sub-Menu F10 Previous Values

BIOS Version AXX

Item Specific Help

Determines the order
of drives from which
the system tries to
boot.

Figure A-2. Boot Options Submenu

Table A-3. Boot Options Submenu Categories

Category Function

Boot Sequence Determines the sequence in which the

drives are searched to find the boot pro­gram after power-on

Setup Prompt Enables or disables the “

” message during boot

Post Errors Enables or disables the “

”

message during boot

Diskette Drive Check Enables or disables checking for type of

diskette drive during boot

Reset Button Enables or disables the reset button on the

front bezel

System Setup Program A-5

Advanced Menu

Dell System PowerEdge 4100/200 Setup BIOS Version AXX

Main Advanced Security Exit

Serial Port 1: [3F8, IRQ 4]
Serial Port 2: [2F8, IRQ 3]
Parallel Port: [378, IRQ 7]
Parallel Mode: [Output only]
Diskette Controller: [Enabled]
On-Board SCSI A: [Enabled]
On-Board SCSI B: {Enabled}
PCI Scan Sequence [Embedded devices first]
Use MP Specification {1.4}
PS/2 Mouse [Enabled]

F1 Select ItemHelp -/+ Change Values F9 Setup Defaults
ESC Exit Select Menu Enter Select Sub-Menu F10 Previous Values

Figure A-3. Advanced Menu

Item Specific Help

Configures the system’s
built-in serial port.

A-6 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

Table A-4. Advanced Menu Categories

Category Function

Serial Port 1 or

Configures system’s built-in serial ports.

Serial Port 2
Parallel Port Configures system’s built-in parallel port.

The port’s I/O address may be set to:
278H, IRQ5; 3BCH, IRQ7; 378H, IRQ7.
Otherwise, the port may be disabled.

Parallel Mode Controls whether system’s built-in parallel

port acts as an AT-compatible (Output
Only), PS/2-compatible (Bidirectional), or
ECP (extended capabilities port).

Diskette Controller Enables system’s built-in diskette

controller.

On-Board SCSI A Enables or disables the built-in SCSI 7880

Ultra/Wide controller and determines if it is
scanned as a boot drive.

On-Board SCSI B Enables or disables the built-in SCSI 7860

Ultra/Narrow controller and determines if
it is scanned as a boot drive.

PCI Scan Sequence Determines the sequence the PCI devices

are scanned to find a boot device (default is
Embedded devices first).

Use MP Specification Determines the microprocessor-

specification revision level: either 1.1 or

1.4 (default).

PS/2 Mouse Enables or disables the built-in mouse con-

troller.

System Setup Program A-7

Security Menu

Dell System PowerEdge 4100/200 Setup

Main Advanced Security Exit

Supervisor Password Is Disabled
User Password Is Disabled
Set Supervisor Password[Press Enter]
Set User Password [Press Enter]

Password on Boot [Disabled]

Diskette Access [User]
System Backup Reminder [Disabled]
Virus Check Reminder [Disabled]

F1 Select ItemHelp -/+ Change Values F9 Setup Defaults
ESC Exit Select Menu Enter Select Sub-Menu F10 Previous Values

Figure A-4. Security Menu

BIOS Version AXX

Item Specific Help

<ENTER>

A-8 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

Table A-5. Security Menu Categories

Category Function

Supervisor Password Is Displays current status of the supervisor

password (enabled or disabled). See “Using
the Supervisor Password Feature” in Chap­ter 4 of the User’s Guide.

User Password Is Displays current status of user password

(enabled or disabled). See “Using the User
Password Feature” in Chapter 4 of the
User’s Guide.

Set Supervisor Pass­word

Displays a dialog box for entering a new
user password (up to seven alphanumeric
characters). See “Using the Supervisor
Password Feature” in Chapter 4 of the
User’s Guide.

Set User Password Displays a dialog box for entering a new

user password (up to seven alphanumeric
characters). See “Using the User Password
Feature” in Chapter 4 of the User’s Guide.

Password on Boot Allows you to require the entry of a super-

visor password before the boot process of
the system can be completed. Requires use
of a supervisor password.

Diskette Access Restricts access to the diskette drive.

Requires use of a supervisor password.

System Backup
Reminder

Enables or disables a system-backup
reminder message at boot.

Virus Check Reminder Enables or disables a virus-check reminder

message at boot.

System Setup Program A-9

Exit Menu

Dell System PowerEdge 4100/200 Setup

Main Advanced Security Exit

Save Changes & Exit
Exit Without Saving Changes
Get Default Values
Load Previous Values
Save Changes

F1 Select ItemHelp -/+ Change Values F9 Setup Defaults
ESC Exit Select Menu Enter Select Sub-Menu F10 Previous Values

Saves all changes made
in the Setup program to
CMOS, exits the Setup
program, and then re­boots the computer.

BIOS Version AXX

Item Specific Help

Figure A-5. Exit Menu

A-10 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

Table A-6. Exit Menu Categories

Category Function

Save Changes and Exit Saves the changes you have made before

you exit the System Setup program. The
next time you boot up, the BIOS configures
your system according to the selections
stored in CMOS.

Exit Without Saving
Changes

Exits the System Setup program without
saving any of the changes you have made.

Get Default Values Loads the default values for each menu in

the System Setup program.

Load Previous Values Loads the values previously stored in

CMOS for each menu.

Save Changes Stores your changes in CMOS, but does not

exit the System Setup program.

System Setup Program A-11

A-12 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

Index

A

AC power receptacle

about, 1-7
location on I/O panel, 1-7

B

battery

connector, 4-17
illustrated, 4-23

removing and replacing, 4-23
BATTERY connector, 4-17
beep codes, 3-1
boot routine

observing when troubleshooting, 2-3

C

cables

DC power, 1-12
card-slot opening, 4-18
carrier, hard-disk drive

removal, 4-9
CD-ROM drive

illustrated, 4-5

removal, 4-7

configuration guidelines

SCSI drives, 1-9

configuration jumpers

location on system board, 4-17

connectors

location on system board, 4-17

control panel

connector, 4-17
illustrated, 1-5
removal, 4-15

cover, system unit

removal, 4-2

D

DC power

about, 1-11
connectors, 1-12, 1-16
pin assignments, 1-12, 1-16

DC power distribution

nonredundant system, 1-15

redundant system, 1-19
diagnostics, 2-6
DIMMs

about, 1-21

ECC, 1-8

location on system board, 4-17

removal, 4-19

socket population rules, 1-8

computer

back/right side internal view, 1-6
front/left internal view, 1-5
orientation, 1-3
technical specifications, 1-24

diskette drive

illustrated, 4-5

removal, 4-7
diskette/tape drive interface connector, 4-17
diskette-based diagnostics, 2-5

Index 1

DREQ line assignments, 1-23
drive bays

external, 1-5, 1-6
internal, 1-5, 1-6

drives

about, 1-25
illustrated, 4-5
SCSI configuration guidelines, 1-9
SCSI ID numbers, 1-10
SCSI termination jumpers, 1-10

H

hard-disk drives

connectors, 4-17
drive bays, 1-5, 1-6

hard-disk drives, SCSI

carrier removal, 4-9
configurations, 1-9
illustrated, 4-5

help, getting, 2-6

E

ECC, 1-8
EISA expansion cards, 1-8
EISA expansion-card connectors, 4-17
error messages, system

list of, 3-3

expansion cards

card-slot opening, 4-18
connectors, 4-17
removal, 4-18

slots, 1-8
expansion subsystem, 1-8
external visual inspection, 2-2
externally accessible drives

removal, 4-7

F

I

indicator card

removal, 4-11
initial procedures, 2-1
initialization error messages, 3-3
integrated features

SCSI controllers, 1-9

server management, 1-8

video controller, 1-9
interrupt assignments

list of, 1-22
ISA expansion cards, 4-18

J

jumpers

list of, 1-22

FAN connectors, 4-17
fan connectors, 4-17
fatal error messages, 3-3
FLOPPY connector, 4-17
front bezel

removal, 4-4

front-panel inserts

removal, 4-6

2 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual

K

KEYBOARD connector, 4-17
keyboard connector

location on I/O panel, 1-7

location on system board, 4-17

M

memory

main, 1-21

system, 1-8
messages, error, 3-3
microprocessor

release lever, 4-21

removal, 4-20, 4-21

sockets, 4-17
microprocessor cooling fans

removal, 4-16
MONITOR connector, 4-17

power supply

about, 1-11
connector configuration, 1-12
connectors, 4-17
DC voltage ranges, 1-11
illustrated, 1-12
removal, 4-12

voltage output ranges, 1-11
POWER1 connector, 4-17
POWER2 connector, 4-17
power-supply paralleling board

connector configuration, 1-16

illustrated, 1-16

removal, 4-13

MOUSE connector, 4-17
mouse connector

location on I/O panel, 1-7
location on system board, 4-17

P

padlock, 4-3
PARALLEL connector, 4-17
parallel port connector

location on I/O panel, 1-7

location on the system board, 4-17
PCI expansion cards, 1-8, 4-18
PCI expansion-card connectors, 4-17
Plug and Play ISA expansion cards, 1-8
POST beep codes, 3-1
power

AC power receptacle, 1-7

indicator, 1-4

switch, 1-4
power connector plate

removal, 4-14
power distribution diagram

nonredundant system, 1-15

redundant system, 1-19

precautions, 4-2
PROCESSOR1 connector, 4-17
PROCESSOR2 connector, 4-17

R

REMOTE connector, 4-17
reset button

location on I/O panel, 1-4

resource conflicts

eliminating, 2-5

S

SCSI BACKPLANE connector, 4-17
SCSI CD-ROM connector, 4-17
SCSI connectors, 4-17
SCSI controllers, integrated, 1-9
SCSI devices

ID numbers, 1-10

SCSI hard-disk drives. See hard-disk drives,

SCSI
SCSI ID numbers, 1-10
SERIAL connectors, 4-17

Index 3

serial port connectors

location on I/O panel, 1-7
location on system board, 4-17

server-management bus connector, 4-17

system specifications, 1-24
system unit cover, 4-2

server-management serial port connector

location on I/O panel, 1-7

location on system board, 4-17
SMB BACKPLANE connector, 4-17
sockets

battery, 4-23

DIMM, 4-17, 4-19
specifications, technical, 1-24
subsystems

advanced expansion, 1-8

main memory, 1-21
system board

components, 4-17

illustrated, 1-20

jumpers, 1-21

location, 1-5

removing and replacing, 4-24
system board jumpers, 1-21
system error messages

list of, 3-3
system features, 1-1

T

technical specifications, 1-24
termination jumpers

SCSI drives, 1-10

troubleshooting

boot routine, interpreting, 2-3
external visual inspection, 2-2
initial procedures, 2-1
initial user contact, 2-1
internal visual inspection, 2-4

U

Ultra/Narrow SCSI host adapter connector,

4-17

Ultra/Wide SCSI host adapter connector, 4-

17

user contact, initial, 2-1

system power supply, 1-11
System Setup program

advanced menu, A-6

boot options submenu, A-5

exit menu, A-10

key functions, A-2

main menu, A-3

menus, A-1

screen color combinations, A-3

screen conventions, A-1

security menu, A-8

starting, A-1

V

video connector

location on I/O panel, 1-7

location on system board, 4-17
video controller, integrated, 1-9
visual inspection

external, 2-2

internal, 2-4

4 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual