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Technical Overview: Dell Dimension 8300 Series Service Manual

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Technical Overview

Dell™ Dimension™ 8300 Series Service Manual

Looking Inside Your Computer

Power Supply

DC Power Connectors

IDE Interface Cable Connections for Dell-Installed Drives

Placement of Dell-Installed Cards

Looking Inside Your Computer

NOTE: The AGP card is removed from the following illustration to provide a better view of the inside of your computer.

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions listed in "When Working Inside Your Computer" in your Owner's Manual.

NOTICE: Be careful when opening the computer cover to ensure that you do not inadvertently disconnect cables from the system board.

System Board

Power Supply

The 250-W power supply can operate from an AC power source of 115 VAC at 60 Hz or 230 VAC at 50 Hz. The power supply provides the DC operating voltages and currents listed in the following table.

Output Voltage

Minimum Current (A)

Maximum Current (A)¹

Peak Current (A)²

+12 VDC
1.0
10.0⁴
12.0

+5 VDC
4.0
22.0⁴
12.0

+3.3 VDC
1.0/0.0³
14.0⁴
12.0

–12 VDC
0.0
1.0
12.0

+5 VFP
0.0
2.0
12.0

When the current load is outside of the ranges listed, but within each specified output current range, the +5-V, +12-V, and +3.3-V outputs are allowed to regulate at +/–10% of nominal DC voltages.
¹Maximum continuous total DC output cannot exceed 200 W. Maximum continuous combined load on +5-VDC and +3.3-VDC outputs cannot exceed 135 W.
²Peak +12-VDC output power (up to 12 A) does not exceed 15 seconds in duration. In this condition, the tolerance on the +12-V output is allowed to be +/–10%.
³In system applications where +3.3 VDC is not used, these values may be 0 A without affecting the regulation on the other outputs.
⁴The required full load combinations are adjusted so that the total output power is less than or equal to 250 W.