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Technical Overview: Dell Dimension 8400 Systems Service Manual
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Technical Overview
Dell™ Dimension™ 8400 Service Manual
 Inside Your Computer
System Board Components
Power Supply DC Connector Pin Assignments
Inside Your Computer
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CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. |
Follow the procedures in "Before You Begin."
System Board Components
Power Supply DC Connector Pin Assignments
DC Power Connector P1
|
Pin Number
|
Signal name
|
Color
|
Wire Gauge
|
|---|
1
|
+3.3 VDC
|
Orange
|
16-AWG
|
2
|
+3.3 VDC
|
Orange
|
16-AWG
|
3
|
COM
|
Black
|
18-AWG
|
4
|
+5 VDC
|
Red
|
18-AWG
|
5
|
COM
|
Black
|
18-AWG
|
6
|
+5 BDC
|
Red
|
18-AWG
|
7
|
COM
|
Black
|
18-AWG
|
8
|
POK
|
Gray
|
18-AWG
|
9
|
+5 VFP
|
Purple
|
18-AWG
|
10
|
+12 VB DC
|
White
|
18-AWG
|
11
|
+12VB DC
|
White
|
18-AWG
|
12
|
+3.3 VDC
|
Orange
|
16-AWG
|
13
|
+3.3 VDC
|
Orange
|
16-AWG
|
14
|
-12 VDC
|
Blue
|
18-AWG
|
15
|
COM
|
Black
|
18-AWG
|
16
|
PS-ON
|
Green
|
18-AWG
|
17
|
COM
|
Black
|
18-AWG
|
18
|
COM
|
Black
|
18-AWG
|
19
|
COM
|
Black
|
18-AWG
|
20
|
N/C
|
N/C
|
18-AWG
|
21
|
+5 VDC
|
Red
|
18-AWG
|
22
|
+5 VDC
|
Red
|
18-AWG
|
23
|
+5 VDC
|
Red
|
18-AWG
|
24
|
COM
|
Black
|
18-AWG
|
DC Power Connector P2
|
Pin Number
|
Signal Name
|
18-AWG Wire
|
|---|
1
|
COM
|
Black
|
2
|
COM
|
Black
|
3
|
+12 VA DC
|
Yellow
|
4
|
+12 VA DC
|
Yellow
|
DC Power Connectors, P3 and P5
|
Pin Number
|
Signal Name
|
18-AWG Wire
|
|---|
1
|
+3.3 VDC
|
Orange
|
2
|
COM
|
Black
|
3
|
+5 VDC
|
Red
|
4
|
COM
|
Black
|
5
|
+12 VB DC
|
White
|
DC Power Connector P4
|
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
|
+12B VDC
|
White
|
DC Power Connector P6
|
Pin Number
|
Signal Name
|
18-AWG Wire
|
|---|
1
|
+12 VB DC
|
Yellow
|
2
|
COM
|
Black
|
3
|
COM
|
Black
|
4
|
+5V DC
|
Red
|
DC Power Connector P7
|
Pin Number
|
Signal Name
|
18-AWG Wire
|
|---|
1
|
+5 VDC
|
Red
|
2
|
COM
|
Black
|
3
|
COM
|
Black
|
4
|
+12 A VDC
|
Yellow
|
DC Power Connectors, P8 and P9
|
Pin Number
|
Signal Name
|
18-AWG Wire
|
|---|
1
|
+12 VB DC
|
White
|
2
|
COM
|
Black
|
3
|
COM
|
Black
|
4
|
+5V DC
|
Red
|
DC Power Connector P10
|
Pin Number
|
Signal Name
|
18-AWG Wire
|
|---|
1
|
+12 B VDC
|
White
|
2
|
+12 B VDC
|
White
|
3
|
+12 B VDC
|
White
|
4
|
COM
|
Black
|
5
|
COM
|
Black
|
6
|
COM
|
Black
|
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