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Jumpers, Switches, and Connectors: Dell™
PowerEdge™ 6300 Installation and Troubleshooting Guide
This section provides specific
information about the jumpers on the system board. It also provides some basic information
on jumpers and switches and describes the connectors and sockets on the various boards in
the computer.
Jumpers and switches 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 the system board. You
may also need to change jumper and/or switch settings on expansion cards or drives.
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.
 |
CAUTION:
Make sure the system is turned off before you change a jumper setting. Otherwise,
damage to the system or unpredictable results may occur. |
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 so that you can identify each pin number based on the location of pin
1.
Figure 1 shows
the location and default settings of the jumper blocks on the system board. See Table 1 for the designations, default settings, and functions of the
system's jumpers.
Switches control various circuits or
functions in the computer system. The switches you are most likely to encounter are dual
in-line package (DIP) switches, which are normally packaged in groups of two or more
switches in a plastic case. Two common types of DIP switches are slide switches and rocker
switches (see the following illustration).
Each of these switches has two positions,
or settings (usually on and off). To change the setting of a slide switch, use a small,
pointed object such as a small screwdriver or a straightened paper clip to slide the
switch to the proper position. To change the setting of a rocker switch, use the
screwdriver or paper clip to press down on the appropriate side of the switch. In either
case, do not use a pen, pencil, or other object that might leave a residue on the switch.
Figure 1. System Board Jumpers
| Table 1. System Board Jumper Settings
|
| Jumper
|
Setting
|
Description
|
| PASSWD |
 |
(default) |
The password
feature is enabled.
The password feature is disabled. |
| CARDBIOS |
 |
|
Reserved (do
not change). |
| ISA_CLR |
 |
(default)
|
The ISA
configuration settings are retained at system boot.
The ISA configuration settings are
cleared at next system boot. (If the ISA configuration settings become corrupted to the
point where the system will not boot, install the jumper plug
and boot the system. Remove the jumper before restoring the ISA configuration
information.) |
| RSVD1* |
 |
|
Reserved (do not
change). |
| RSVD2*
|
 |
|
Reserved (do not
change).
|
| 350MHZ* |
 |
|
Reserved (do not
change). |
| 400MHZ* |
 |
|
The
microprocessor's internal speed is 400 MHz.
|
| 450MHZ* |
 |
|
The
microprocessor's internal speed is 450 MHz (when available). |
| 500MHZ*
|
 |
|
The
microprocessor's internal speed is 500 MHz (when available).
|
* Only one of these jumpers should have a jumper plug installed.
 |
NOTE: For the full name of an abbreviation or acronym
used in this table, see the abbreviation and acronym list that precedes the Index |
|
 |
The computer's software security
features include a system password and a setup password, which are discussed in detail in
Chapter 4, "Using the System Setup Program," of the Dell PowerEdge 6300
Systems User's Guide. A password jumper on the system board enables or disables the
password features and clears any password(s) currently in use.
To disable a forgotten system or setup
password, perform the following steps:
1. Remove the computer cover.
See Removing the Computer Cover for
instructions.
2. Refer to Jumpers and Switches--A General
Explanation.
Figure 1 shows the
location of the password jumper (labeled "PASSWD") on the system board.
3.
Remove the jumper plug from the PASSWD jumper.
4. Replace the computer cover, and
then reconnect the computer to its power source and turn it on.
The existing passwords are not disabled
(erased) until the system boots with the PASSWD jumper plug removed. However, before you
assign a new system and/or user password, you must install the jumper plug.
|
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. |
5. Repeat step 1.
6. Install the jumper plug on the
PASSWD jumper.
7. Replace the computer cover, and
then reconnect the computer and peripherals to their power sources and turn them on.
8. Assign a new system or setup
password.
To assign a new system password using the
System Setup program, see "Assigning a System Password" in Chapter 4 of the User's
Guide. To assign a new setup password using the System Setup program, see
"Assigning a Setup Password" in Chapter 4 of the User's Guide.
Table 2 lists the connectors and sockets located on the system board.
| Table 2. System Board Connectors and Sockets
|
| Connector or Socket
|
Description
|
| BACKPLANE |
Hot-pluggable
SCSI backplane board interface cable connector |
| BATTERY |
Battery connector |
| MEMORY_BD |
Memory board
connector |
| INTRUS |
Intrusion alarm
switch connector |
| FANn |
Fan connectors |
| FLOPPY |
Diskette drive
interface connector |
| VGA |
Video connector |
| KYBD |
Keyboard
connector |
| MOUSE |
Mouse connector |
| PARALLEL |
Parallel port
connector; sometimes referred to as LPT1 |
| PCIn |
PCI
expansion-card connectors |
| POWERn |
Power input
connectors |
PRIMARY SCSI-A,
PRIMARY SCSI-B |
Ultra2/LVD SCSI
host adapter connectors |
| SECONDARY SCSI |
Ultra/Narrow SCSI
host adapter connector |
| SERIALn |
Serial port
connectors; sometimes referred to as COM1 and COM2 |
| SVR_MGT |
Connector for
Dell Remote Assistant Card |
| XSMB_OUT, XSMB_IN |
SMB connectors |
| PROC_n |
Microprocessor
guide bracket assembly and connectors |
|
NOTE: For the full name of an abbreviation or acronym
used in this table, see the abbreviation and acronym list that precedes the Index. |
|
Figure 2 shows
the location of the connectors on the 1 x 6 SCSI backplane board.
Figure 2. 1 x 6
SCSI Backplane Board
Table 3 lists the
connectors on the 1 x 6 SCSI backplane board.
| Table 3. 1 x 6 Hot-Pluggable SCSI Backplane Board Connectors
|
|
Connector
|
Description
|
| PLANAR |
sys-board data
cable connector (connects to the system board and the front control panel) |
| FAN |
Cooling fan power
cable connector |
| POWER |
Power input
connector |
| SCSI |
Ultra2/LVD SCSI
cable connector |
| SLOTn |
SCA-2-compatible
SCSI hard-disk drive connector |
|
NOTE: For the full name of an abbreviation or acronym
used in this table, see the abbreviation and acronym list that precedes the Index. |
|
Figure 3 shows
the location of the connectors on the power supply paralleling board.
Figure 3. Power
Supply Paralleling Board
Table 4 lists the connectors on the power supply paralleling board.
| Table 4. Power Supply Paralleling Board Connectors
|
| Connector
|
Description
|
| PSn.PBn |
Power supply
cable connector |
| FD |
Diskette drive
power cable connector |
| PWRn |
System board
power cable connector |
| HD_B/P |
SCSI backplane
board power cable connector |
|
NOTE: For the full name of an abbreviation or acronym
used in this table, see the abbreviation and acronym list that precedes the Index. |
|
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