Technical Overview: Dell™ Dimension™ 4100 System Reference
| 1 |
Power supply |
6 |
Card-guide assembly (contains
primary hard drive) |
| 2 |
DC power cables |
7 |
Filler brackets |
| 3 |
Floppy-drive interface cable |
8 |
System board |
| 4 |
Secondary hard-drive bracket |
9 |
Fan assembly |
| 5 |
Drive cage |
|
|
| 1 |
Power supply |
6 |
Card-guide assembly (contains
primary hard drive) |
| 2 |
DC power cables |
7 |
Filler brackets |
| 3 |
Floppy-drive interface cable |
8 |
System board |
| 4 |
Secondary hard-drive bracket |
9 |
Fan assembly |
| 5 |
Drive cage |
|
|
Back-Panel Features
| 1 |
Voltage selection switch |
9 |
Diagnostic code lights (4) |
| 2 |
Security cable ring |
10 |
Serial port connector |
| 3 |
Parallel port connector |
11 |
USB connectors (2) |
| 4 |
MIDI/game port connector1 |
12 |
NIC connector2 |
| 5 |
Video connector |
13 |
Keyboard connector |
| 6 |
Microphone jack1 |
14 |
Mouse connector |
| 7 |
Line-in jack1 |
15 |
AC power receptacle |
| 8 |
Line-out jack1 |
|
|
|
1For computers
with built-in sound
2For computers with built-in network interface controller (NIC) |
|
|
System Board
Connectors and Sockets
| 1 |
Microprocessor connector
(CPU) |
10 |
Control panel connector
(J8C3) |
| 2 |
Memory sockets (DIMM n) |
11 |
Configuration jumper (BIOS CONF) |
| 3 |
Auxiliary power connector
(AUX POWER) |
12 |
Battery socket (BATTERY) |
| 4 |
Main power input connector
(POWER) |
13 |
Speaker |
| 5 |
Power light (STB LED) |
14 |
PCI card connectors (PCI1,
PCI2, PCI3, PCI4, and PCI5) |
| 6 |
Floppy-drive interface
connector (FLOPPY) |
15 |
Fan connector (FAN 2) |
| 7 |
Primary EIDE channel
connector (PRI IDE) |
16 |
CD drive sound connector (CD
IN)* |
| 8 |
Secondary EIDE channel
connector (SEC IDE) |
17 |
Speaker phone connector
(TELEPHONY)* |
| 9 |
AGP video connector (AGP) |
18 |
Auxiliary sound-in connector
(AUX IN)* |
|
|
|
|
|
* For computers with
built-in sound |
|
|
System Board Configuration
Jumper
Table 1. Configuration Jumper Settings
| 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 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/or assign new passwords. For the complete
password procedure, see "Clearing Forgotten Passwords" in the appendix of the Solutions
Guide. |
| NOTE: The Glossary
defines abbreviations and acronyms. |
The socketed microprocessor, shown above with the heat sink
attached, contains a 370-pin microprocessor card. The microprocessor includes the
following features:
- IntelŪ PentiumŪ III microprocessor with
integrated 32-kilobyte (KB) primary (L1) cache
- Secondary (L2) cache of 256-KB Advanced Transfer Cache that resides
in the processor's core and runs at the processor's internal clock speed
- Associated circuitry
The socketed microprocessor inserts into the zero-insertion force
(ZIF) connector mounted on the system board. A clip secures the heat
sink to the connector.
Table 2. EIDE Interface Cable Connections for Dell-Installed
Drives
| EIDE Channel |
EIDE Connector Location |
Dell-Installed Drive |
| Primary EIDE master |
End connector on PRI IDE connector cable |
Hard drive |
| Primary EIDE slave |
Middle connector on PRI IDE connector cable |
Zip drive or LS-120 drive |
| Secondary EIDE master |
End connector on SEC IDE connector cable |
CD drive or DVD drive |
| Secondary EIDE slave |
Middle connector on SEC IDE connector cable |
CD-RW drive |
| NOTE: The Glossary defines abbreviations and acronyms. |
Power Supply
The 200-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 in order to measure these voltages. |
Table 3. DC Voltage Ranges
| Voltage |
Range |
Maximum Output Current |
Notes |
| +3.3 VDC |
+3.14 to +3.47 VDC |
14.00 A |
The combined load on the +3.3-VDC and +5-VDC outputs
cannot exceed 140 W. |
| +5 VDC |
+4.90 to +5.25 VDC |
22.00 A |
The combined load on the +3.3-VDC and +5-VDC outputs
cannot exceed 140 W. |
| –5 VDC |
–4.50 to –5.50 VDC |
0.300 A |
|
| +12 VDC |
+11.40 to +12.60 VDC |
6.00 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). |
| NOTE: The Glossary defines abbreviations and acronyms. |
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. Figures 1 through 4 show the
wire side of the connectors.
Figure 1. 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. |
Figure 2. DC Power Connector P2, P3, P5, and P6
 |
| 1 |
+12 VDC (yellow) |
| 2 |
Common (black) |
| 3 |
Common (black) |
| 4 |
+5 VDC (red) |
|
Figure 3. DC Power Connector P4
 |
| 1 |
+12 VDC (yellow) |
| 2 |
Common (black) |
| 3 |
Common (black) |
| 4 |
+5 VDC (red) |
|
Figure 4. DC Power Connector P7
 |
| 1 |
Common (black) |
| 2 |
Common (black) |
| 3 |
Common (black) |
| 4 |
+3.3 VDC (orange) |
| 5 |
+3.3 VDC (orange) |
| 6 |
+3.3 VDC (orange) |
|
