83
Chapter 5
ATX_ POWER: ATX 24-pin Power Connector
ATX12V: ATX 12V Power Connector
Pin
Signal Name
Pin
Signal Name
1 +3.3V
13
+3.3V
2
+3.3V
14
-12V
3
COM
15
COM
4
+5V
16
PS_ON
5
COM
17
COM
6
+5V
18
COM
7
COM
19
COM
8
PWR OK
20
-5V
9
+5VSB
21
+5V
10
+12V
22
+5V
11
+12V
23
+5V
12
+3.3V
24
COM
Pin
Signal Name
1
Ground
2
Ground
3
+12V
4
+12V
Summary of Contents for Aspire X3990
Page 1: ...Acer Aspire X3990 Service Guide PRINTED IN TAIWAN ...
Page 12: ...4 Chapter 1 Block Diagram ...
Page 65: ...57 Chapter 3 Install the I O Shielding 1 Install I O shielding into chassis ...
Page 68: ...Chapter 3 60 4 Connect the ATX 24Pin Power cable and ATX 4Pin Power cable to main board ...
Page 75: ...67 Chapter 3 Install the TV Tuner Card 1 Press down the TV Tuner card 2 Fix the two screws ...
Page 76: ...Chapter 3 68 Install the Side Panel 1 Install the side Panel then fix two Screws ...
Page 84: ...Chapter 5 76 M B Placement Jumper and Connector Information Chapter 5 ...