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Technical Overview: Dell™ Dimension™ 2100 System Reference

Internal View Power Supply
Back-Panel Features DC Power Cables
System Board Connectors and Sockets DC Power Connector Pin Assignments
System Board Configuration Jumper Control Panel Connector (J9F2) Pin Assignments

Internal View

1 Front-panel release
2 5.25-inch drive bay
3 3.5-inch drive bays
4 Hard drive
5 Power supply
6 AC power connector
7 I/O panel
8 Security cable slot
9 Release latch and padlock ring

Back-Panel Features

1 Mouse connector
2 Parallel connector
3 Keyboard connector
4 USB connectors (2)
5 Video connector
6 Serial connector
7 Diagnostic code lights (4)

System Board Connectors and Sockets

1 Microprocessor connector (J5H1) 12 Speaker (LS9A1)
2 Memory sockets (BANKn) 13 Configuration jumper (J7A1)
3 Fan connector (J3J1) 14 Power light
4 3.3-V power connector (OPTIONAL POWER) 15 Card connectors (natural color) (PCIn)
5 Secondary IDE channel connector (SEC IDE) 16 Serial connector (COM1)
6 Control panel connector (J9F2) 17 Parallel connector; sometimes referred to as LPT1 (PARALLEL)
7 Floppy drive interface connector (FLOPPY) 18 Video connector (VIDEO)
8 Primary IDE channel connector (PRI IDE) 19 USB connectors (USBn)
9 Power input connector (POWER) 20 Mouse connector (MOUSE)
10 Battery socket (BATTERY) 21 Keyboard connector (KEYBD)
11 Wakeup On LAN connector (WOL)

System Board Configuration Jumper

NOTE: The red dot in the jumper denotes pin 1.

Jumper Setting Jumper Description
Pins 1-2 jumpered 
(Normal mode)
In Normal mode, system setup settings and installed passwords are retained when the computer starts up. In this mode, an automatic recovery is attempted if the BIOS detects that any of its main blocks are corrupted.
Pins 2-3 jumpered
(Maintenance mode)
Starting the computer with the jumper set in Maintenance mode automatically starts the system setup program, adds the Maintenance option to the menu bar, and displays the Maintenance screen. This screen provides the following option.

NOTICE: Entering Maintenance mode returns all settings in the system setup program to their defaults. Dell strongly recommends that you record or print all current settings before entering this mode so that you can correct them when the computer is reset to Normal mode.

Clear All Passwords — Disables a forgotten password so that you can access the computer and assign new passwords. For the complete password procedure, see "Clearing Forgotten Passwords" in the Solutions Guide.


Power Supply

The 145-watt (W) power supply can operate from an AC power source of 115 volts AC (VAC) at 60 hertz (Hz) or 230 VAC at 50 Hz. The power supply provides the DC operating voltages and currents listed in the following table.

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

DC Voltage Ranges

Voltage Range Maximum Output Current Notes
+3.3 VDC +3.14 to +3.47 VDC 10.00 A The combined load on the +3.3-VDC and +5-VDC outputs cannot exceed 85 W.
+5 VDC +4.90 to +5.25 VDC 16.00 A The combined load on the +3.3-VDC and +5-VDC outputs cannot exceed 85 W.
–5 VDC –4.50 to –5.50 VDC 0.300 A  
+12 VDC +11.40 to +12.60 VDC 4.5 A The +12-VDC output can withstand surges of up to 11.0 A to support disk start-up operations.
–12 VDC –10.80 to –13.20 VDC 0.300 A  
+5 VSB +4.75 to +5.25 VDC 1.2 A The +5 volts standby (VSB) is sometimes called volts flea power (VFP).

DC Power Cables

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DC Power Connector Pin Assignments

The power-supply output voltages can be measured at the back (wire side) of the DC power connectors without disconnecting them. The following figures show the wire side of the connectors:

DC Power Connector P1

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1 +5 VDC (red) 11 PSON#2 (brown)
2 Common (black) 12 Common (black)
3 +5 VDC (red) 13 Common (black)
4 Common (black) 14 Common (black)
5 PWRGOOD1 (orange) 15 –5 VDC (white)
6 +5 VFP (purple) 16 +5 VDC (red)
7 +12 VDC (yellow) 17 +5 VDC (red)
8 12 VDC (blue) 18 +5 VDC (red)
9 Common (black) 19 Not connected
10 Common (black) 20 +5 VDC (red)

1 Pin 5 — PWRGOOD is a status signal generated by the power supply to notify the computer that the DC operating voltages are within the ranges required for proper computer operation.

2 Pin 11 — PSON# is activated by pressing and releasing the power button while the power supply is in standby state. Activating PSON# connects the power supply's PSON# input to ground, thereby switching the power supply to full-on condition.

DC Power Connector P2

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1 Common (black)
2 Common (black)
3 Common (black)
4 +3.3 VDC (orange)
5 +3.3 VDC (orange)
6 +3.3 VDC (orange)

DC Power Connector P3

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1 +12 VDC (yellow)
2 Common (black)
3 Common (black)
4 +5 VDC (red)

DC Power Connectors P4, P5, and P6

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1 +12 VDC (yellow)
2 Common (black)
3 Common (black)
4 +5 VDC (red)

Control Panel Connector (J9F2) Pin Assignments

1 Hard-drive light (+)
2 Power light (+)
3 Hard-drive light (-)
4 Power light (-)
5 Reset switch
6 Power switch
7 Reset switch
8 Power switch
14 No pin
17 No pin
18 No pin

 

 

 

 

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