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Technical Overview: Dell™ Dimension™ 2100
System Reference
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
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
| 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
 |
| 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
 |
| 1 |
+12 VDC (yellow) |
| 2 |
Common (black) |
| 3 |
Common (black) |
| 4 |
+5 VDC (red) |
|
DC Power Connectors P4, P5, and P6
 |
| 1 |
+12 VDC (yellow) |
| 2 |
Common (black) |
| 3 |
Common (black) |
| 4 |
+5 VDC (red) |
|
 |
| 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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