Dell PowerEdge 850 Guide

Dell™PowerEdge™850SystemsInstallationandTroubleshootingGuide
Introduction
Indicators, Messages, and Codes
Running the System Diagnostics
Troubleshooting Your System
Installing System Components
Installing Drives
Service-Only Parts Replacement Procedures
Getting Help
Jumpers, Switches, and Connectors
I/O Connectors
Notes, Notices, and Cautions
Abbreviations and Acronyms
For a complete list of abbreviations and acronyms, see the Glossary in your User's Guide.
Information in this document is subject to change without notice.
©2005DellInc.Allrightsreserved.
Reproduction in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden.
Trademarks used in this text: Dell, the DELL logo, PowerEdge, PowerVault, PowerApp, Dell OpenManage, Inspiron, Dell Precision, Dimension, OptiPlex, and Latitude are trademarks of Dell
Inc.; Intel, Pentium, and Celeron are registered trademarks of Intel Corporation; EMC is a registered trademark of EMC 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 Inc. disclaims any
proprietary interest in trademarks and trade names other than its own.
Initial release: April 2005
NOTE: A NOTE indicates important information that helps you make better use of your computer.
NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.
CAUTION: A CAUTION indicates a potential for property damage, personal injury, or death.

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Jumpers, Switches, and Connectors
Dell™PowerEdge™800SystemsInstallationandTroubleshootingGuide
Jumpers—A General Explanation
System Board Jumpers
System Board Connectors
SCSI Backplane Connectors
Disabling a Forgotten Password
This section provides specific information about the system jumpers. It also provides some basic information on jumpers and switches and describes the
connectors on the various boards in the system.
Jumpers—A General Explanation
Jumpers provide a convenient and reversible way of reconfiguring the circuitry on a printed circuit board. When reconfiguring the system, you may need to
change jumper settings on circuit boards or drives.

Jumpers
Jumpers are small blocks on a circuit board with two or more pins emerging from them. Plastic plugs containing a wire fit down over the pins. The wire connects
the pins and creates a circuit. To change a jumper setting, pull the plug off its pin(s) and carefully fit it down onto the pin(s) indicated. FigureA-1 shows an
example of a jumper.
Figure A-1. Example Jumper
A jumper is referred to as open or unjumpered when the plug is pushed down over only one pin or if there is no plug at all. When the plug is pushed down
over two pins, the jumper is referred to as jumpered. The jumper setting is often shown in text as two numbers, such as 1–2. The number 1 is printed on the
circuitboardwithatrianglesothatyoucanidentifyeachpinnumberbasedonthelocationofpin1.
FigureA-2 shows the location and default settings of the server-module jumper blocks. See TableA-1 for the designations, default settings, and functions of
the jumpers.
System Board Jumpers
FigureA-2 shows the location of the configuration jumpers on the system board. TableA-1 lists the jumper settings.
Figure A-2. System Board Jumpers
NOTE: To access the jumpers, remove the memory cooling shroud by lifting the release latch and sliding the shroud toward the front of the system. See
Figure6-1.

Table A-1.SystemBoardJumperSettings
System Board Connectors
See FigureA-3 and TableA-2 for the location and description of the system board connectors.
Figure A-3. System Board Connectors

Jumper

Setting

Description
PASSWD_EN
(default)
The password feature is enabled.
The password feature is disabled.
NVRAM_CLR
(default)
The configuration settings in NVRAM are retained at system boot.
The configuration settings in NVRAM are cleared at next system boot.

Table A-2.SystemBoardConnectors
SCSI Backplane Connectors
See FigureA-4 for the location and description of the connectors on the back of the optional SCSI backplane board.
Figure A-4. Connectors on Back of SCSI Backplane

Connector

Description
12V
Power connector
BACK_FAN
Fan power connector
BATTERY
Connector for the 3.0-V coin battery
BP_I2C
Connector for the baseboard management controller (BMC) inter-IC (I2C) cable for the optional SCSI backplane
CPU
Processor connector
DIMMn_ x
Memory module connector (4)
FDD
Diskette drive connector
FRONT_FAN
Fan power connector
FRONT_PANEL
Control panel connector
IDE
IDE optical device connector
SLOT_n
PCI expansion slot connector
PWR_CONN
Power connector
RAC_CONN
Connector for the remote access controller (RAC)
SATA_n
SATA hard-drive connector

Disabling a Forgotten Password
The system's software security features include a system password and a setup password, which are discussed in detail in "Using the System Setup Program"
in your User's Guide.Thepasswordjumperenablesthesepasswordfeaturesordisablesthemandclearsanypassword(s)currentlyinuse.


1. Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.

2. Open the system. See "Opening the System" in "Troubleshooting Your System."

3. Remove the memory cooling shroud by lifting the release latch and sliding the shroud toward the front of the system. See Figure6-1.

4. Remove the password jumper plug.
See FigureA-2 to locate the password jumper on the system board.

5. Replace the memory cooling shroud.

6. Close the system. See "Closing the System" in "Troubleshooting Your System."

7. Reconnect the system to the electrical outlet, and turn on the system.
The existing passwords are not disabled (erased) until the system boots with the password jumper plug removed. However, before you assign a new
system and/or setup password, you must install the jumper plug.

8. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.

9. Open the system.

10. Remove the memory cooling shroud.

11. Reinstall the password jumper plug in its original position to enable the password protection feature.

12. Reinstall the memory cooling shroud.

13. Close the system, reconnect the system to the electrical outlet, and turn on the system.

14. Assign a new system and/or setup password.
To assign a new password using the System Setup program, see "Using the System Setup Program" in your User's Guide.
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
CAUTION: See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting
against electrostatic discharge.
NOTE: If you assign a new system and/or setup password with the jumper plug still removed, the system disables the new password(s) the next
time it boots.

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I/O Connectors
Dell™PowerEdge™800SystemsInstallationandTroubleshootingGuide
Serial Connector
Parallel Connector
PS/2-Compatible Keyboard and Mouse Connectors
Video Connector
USB Connectors
Integrated NIC Connectors
Network Cable Requirements
I/O connectors are the gateways that the system uses to communicate with external devices, such as a keyboard, mouse, printer, or monitor. This section
describes the various connectors on your system. If you reconfigure the hardware connected to the system, you may also need the pin number and signal
information for these connectors. FigureB-1 illustrates the connectors on the system.
Figure B-1. I/O Connectors
TableB-1 shows the icons used to label the connectors on the system.
Table B-1. I/O Connector Icons
Serial Connector
Serial connectors support devices such as external modems, printers, and mice that require serial data transmission. The serial connector is also used by the
BMC to provide remote access to the system. The serial connector uses a 9-pin D-subminiature connector.


Icon

Connector
Serial connector
Parallel connector
Mouse connector
Keyboard connector
Video connector
USB connector
NIC connector

Serial Connector Autoconfiguration
The default designation of the integrated serial connector is COM1. When you add an expansion card containing a serial connector that has the same
designation as the integrated connector, the system's autoconfiguration feature remaps (reassigns) the integrated serial connector to the next available
designation. Both the new and the remapped COM connectors share the same IRQ setting. COM1 and COM3 share IRQ4, while COM2 and COM4 share IRQ3.
Before adding a card that remaps the COM connectors, check the documentation that came with the software to make sure that the software can
accommodate the new COM connector designation.
FigureB-2 illustrates the pin numbers for the serial connector and TableB-2 defines the pin assignments for the connector.
Figure B-2. Serial Connector Pin Numbers
Table B-2.SerialConnectorPinAssignments
Parallel Connector
The integrated parallel connector, intended primarily for use by printers that require data in parallel format, uses a 25-pin D-subminiature connector on the
system's back panel. The default designation of the system's parallel connector is LPT1. If you add an expansion card containing a parallel connector
configured as LPT1 (IRQ7, I/O address 378h), use the System Setup program to remap the integrated parallel connector. See "Using the System Setup
Program" in the User's Guide. FigureB-3 illustrates the pin numbers for the parallel connector and TableB-3 defines the pin assignments for the connector.
Figure B-3. Parallel Connector Pin Numbers
Table B-3.ParallelConnectorPinAssignments
NOTE: If two COM connectors share an IRQ setting, you may not be able to use them both at the same time. In addition, if you install one or more
expansion cards with serial connectors designated as COM1 and COM3, the integrated serial connector is disabled.

Pin

Signal

I/O

Definition
1
DCD
I
Data carrier detect
2
SIN
I
Serial input
3
SOUT
O
Serial output
4
DTR
O
Data terminal ready
5
GND
N/A
Signal ground
6
DSR
I
Data set ready
7
RTS
O
Request to send
8
CTS
I
Clear to send
9
RI
I
Ring indicator
Shell
N/A
N/A
Chassis ground

Pin

Signal

I/O

Definition
1
STB#
I/O
Strobe
2
PD0
I/O
Printer data bit 0
3
PD1
I/O
Printer data bit 1
4
PD2
I/O
Printer data bit 2
5
PD3
I/O
Printer data bit 3
6
PD4
I/O
Printer data bit 4
7
PD5
I/O
Printer data bit 5
8
PD6
I/O
Printer data bit 6
9
PD7
I/O
Printer data bit 7
10
ACK#
I
Acknowledge

PS/2-Compatible Keyboard and Mouse Connectors
The PS/2-compatible keyboard and mouse cables attach to 6-pin, miniature DIN connectors. FigureB-4 illustrates the pin numbers for these connectors and
TableB-4 defines the pin assignments for these connectors.
Figure B-4. PS/2-Compatible Keyboard and Mouse Connector Pin Numbers
Table B-4. Keyboard and Mouse Connector Pin Assignments
Video Connector
You can attach a VGA-compatible monitor to the system's integrated video controller using a 15-pin high-density D-subminiature connector on the system front
or back panel. FigureB-5 illustrates the pin numbers for the video connector and TableB-5 defines the pin assignments for the connector.
Figure B-5. Video Connector Pin Numbers
Table B-5. Video Connector Pin Assignments
11
BUSY
I
Busy
12
PE
I
Paper end
13
SLCT
I
Select
14
AFD#
O
Automatic feed
15
ERR#
I
Error
16
INIT#
O
Initialize printer
17
SLIN#
O
Select in
18–25
GND
N/A
Ground

Pin

Signal

I/O

Definition
1
KBDATA or MDATA
I/O
Keyboard data or mouse data
2
NC
N/A
No connection
3
GND
N/A
Signal ground
4
FVcc
N/A
Fused supply voltage
5
KBCLK or MCLK
I/O
Keyboard clock or mouse clock
6
NC
N/A
No connection
Shell
N/A
N/A
Chassis ground
NOTE: Installing a video card automatically disables the system's integrated video controller.

Pin

Signal

I/O

Definition
1
RED
O
Red video
2
GREEN
O
Green video
3
BLUE
O
Blue video
4
NC
N/A
No connection
5–8, 10
GND
N/A
Signal ground
9
VCC
N/A
Vcc
11
NC
N/A
No connection
12
DDC data out
O
Monitor detect data

USB Connectors
The system's USB connectors support USB-compliant peripherals such as keyboards, mice, and printers and may also support USB-compliant devices such as
diskette drives and optical drives. FigureB-6 illustrates the pin numbers for the USB connector and TableB-6 defines the pin assignments for the connector.
Figure B-6. USB Connector Pin Numbers
Table B-6. USB Connector Pin Assignments
Integrated NIC Connectors
Each of the system's integrated NICs function as a separate network expansion card while providing fast communication between servers and workstations.
FigureB-7 illustrates the pin numbers for the NIC connector and TableB-7 defines the pin assignments for the connectors.
Figure B-7. NIC Connector
Table B-7. NIC Connector Pin Assignments
Network Cable Requirements
The NIC supports a UTP Ethernet cable equipped with a standard RJ45-compatible plug.
Observe the following cabling restrictions.
13
HSYNC
O
Horizontal synchronization
14
VSYNC
O
Vertical synchronization
15
NC
N/A
No connection
NOTICE: Do not attach a USB device or a combination of USB devices that draw a maximum current of more than 500 mA per channel or +5 V. Attaching
devices that exceed this threshold may cause the USB connectors to shut down. See the documentation that accompanied the USB devices for their
maximum current ratings.

Pin

Signal

I/O

Definition
1
Vcc
N/A
Supply voltage
2
DATA
I
Data in
3
+DATA
O
Data out
4
GND
N/A
Signal ground

Pin

Signal

I/O

Definition
1
TD+
O
Data out (+)
2
TD–
O
Data out (–)
3
RD+
I
Data in (+)
4
NC
N/A
No connection
5
NC
N/A
No connection
6
RD–
I
Data in (–)
7
NC
N/A
No connection
8
NC
N/A
No connection

lUse Category 5 or greater wiring and connectors.
lDo not exceed a cable run length (from a workstation to a hub) of 100 m (328 ft).
For detailed guidelines on operation of a network, see "Systems Considerations of Multi-Segment Networks" in the IEEE 802.3 standard.
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
NOTICE: To avoid line interference, voice and data lines must be in separate sheaths.