After Working On Your Computer - Dell Vostro 420 Service Manual

1 power connector 2 processor heat sink/fan
(PWR2) assembly power
4 main power 5 serial ATA drive connector
connector (PWR1) (SATA2)
7 serial ATA drive 8 serial ATA drive connector
connector (SATA3) (SATA0)
10 front I/O panel 11 USB1 system board
connector connector (from front I/O
panel)
13 CMOS jumper (CLEAR 14 USB3 system board
CMOS) connector
16 PCI connector (PCI1) 17 PCI connector (PCI2)
19 PCI Express x1 20 audio connectors
connector (PCIE_X1)
22 chassis fan power 23 USB ports (2)
25 PS/2 mouse and
keyboard connectors
After Working on Your Computer
After you have completed any replacement procedures, ensure that you connect any external devices, cards, cables, and so on, before turning on your
computer.
1. Replace the computer cover (see
2. Connect any telephone or network cables to your computer.
NOTICE: To connect a network cable, first plug the cable into the network device and then plug it into the computer.
3. Connect your computer and all attached devices to their electrical outlets.
4. Turn on your computer.
5. Verify that the computer works correctly by running the Dell Diagnostics. See your Setup and Quick Reference Guide for help running Dell Diagnostics.
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3 memory module connectors
(2)
6 serial ATA drive connector
(SATA1)
9 battery socket
12 USB2 system board
connector (from front I/O
panel)
15 audio connector (AUDIO1)
(from front I/O panel)
18 PCI Express x16 connector
(PCIE_x16)
21 one LAN and two USB ports
24 video connector (VGA)
Replacing the Computer Cover).