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Technical Overview

Dell™ Dimension™ 4600C Service Manual

  Internal View

  System Board Connectors and Sockets

  Power Supply

  DC Power Connectors

  IDE Interface Cable Connections for Dell-Installed Drives

  Serial ATA Interface Cable Connections for Dell-Installed Drives (Optional)

  Placement of Dell-Installed Cards

Internal View

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Owner's Manual or Product Information Guide.

CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover.

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

System Board Connectors and Sockets

Power Supply

The 160-W power supply can operate from an AC power source supplying 90-135 VAC or 180-265 VAC at 47-63 Hz. The power supply provides the DC operating voltages and currents listed in the following table.

Output Voltage1	Regulation	Minimum Current (A)	Maximum Current (A)2
+12 VDC	+/–5%	0.0	11.03
+5 VDC	+/–5%	1.0/0.2 4	11.0
+3.3 VDC	+/–5%	0.1/0.05	9.0
–12 VDC	+/–10%	0.0	0.5
+5 VFP	+/–5%	0.0	2.0
1Outputs meet and do not exceed SELV requirements per electrical standards (UL 1950, IEC 950, or EN60950 Par. 2.3). 2Maximum continuous combined load on +5 VDC and +3.3 VDC outputs do not exceed 80 W. 3 Peak +12 VDC output power (up to 11.0 A) does not exceed 15 seconds in duration. Under this condition, tolerance on the +12 VDC output is allowed to be +–10%. 4+5 VDC minimum load is 0.2 A when there is a minimum load of 0.3 A on the +12 VDC and 0.42 A on the +3.3 VDC outputs simultaneously. +5 V minimum load is 1 A for load transient tests. 5In system configurations where +3.3 VDC is not used, all other outputs stay within regulation while the +3.3 VDC output is in a zero load condition.

DC Power Connectors

Power Supply DC Connector Pin Assignments

DC Power Connector P1

Pin Number	Signal name	18-AWG Wire
1	+3.3 VDC	Orange
2	+3.3 VDC	Orange
3	COM	Black
4	+5 VDC	Red
5	COM	Black
6	+5 VDC	Red
7	COM	Black
8	POK	Gray
9	+5 VFP	Purple
10	+12 VDC	Yellow
11	+3.3 VDC*	Orange
12	–12 VDC	Blue
13	COM	Black
14	PS ON	Green
15	COM	Black
16	COM	Black
17	COM	Black
18	+5 VDC	N/C
19	+5 VCD	Red
20	+5 VCD	Red
*Sense connector.

DC Power Connector P2

Pin Number	Signal Name	18-AWG Wire
1	COM	Black
2	COM	Black
3	+12 VDC	Yellow
4	+12 VDC	Yellow

DC Power Connector P3

Pin Number	Signal Name	18-AWG Wire
1	+12 VCD	Yellow
2	COM	Black
3	COM	Black
4	+5 VDC	Red

DC Power Connectors P4 and P5

Pin Number	Signal Name	22-AWG Wire
1	+5 VCD	Red
2	COM	Black
3	COM	Black
4	+12 VDC	Yellow

DC Power Connector P6

Pin Number	Signal Name	18-AWG Wire
1	N/C	N/C
2	COM	Black
3	COM	Black
4	+3.3 VDC	Orange
5	+5 VDC	Red
6	+12 VDC	Yellow

IDE Interface Cable Connections for Dell-Installed Drives

IDE Channel IDE	Connector Location	Dell-Installed Drive
Primary IDE master	End connector on IDE1 connector cable	Hard drive
Secondary IDE master	End connector on IDE2 connector cable	CD or DVD drive

Serial ATA Interface Cable Connections for Dell-Installed Drives (Optional)

Serial ATA Channel	Connector Location	Dell-Installed Drive
Primary Serial ATA master	End connector on serial ATA connector cable	Hard drive

Placement of Dell-Installed Cards

Card Connector	Card Description
AGP connector	Video card on non-integrated video computers
PCI1 connector	PCI Card

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