Dell Vostro 7620 Service Manual - Page 4

Removing the I/O board...42 Installing the I/O board...44 Speakers...45 Removing the speakers (woofers)...45 Installing the speakers (woofers)...46 Removing the speakers (tweeters)...48 Installing the speakers (tweeters)...48 Touchpad...49 Removing the touchpad...49 Installing the touchpad...50 Power-button board...51 Removing the power-button board...51 Installing the power-button board...52 Power button with optional fingerprint reader...53 Removing the power button with optional fingerprint reader 53 Installing the power button with optional fingerprint reader 55 System board...56 Removing the system board...56 Installing the system board...58 Palm-rest and keyboard assembly...60 Removing the palm-rest and keyboard assembly 60 Installing the palm-rest and keyboard assembly 61 Chapter 3: Drivers and downloads 63 Chapter 4: System setup...64 BIOS overview...64 Entering BIOS setup program...64 Navigation keys...64 Boot Sequence...65 System setup options...65 System and setup password...69 Assigning a system setup password...69 Deleting or changing an existing system setup password 70 Clearing CMOS settings...70 Clearing BIOS (System Setup) and System passwords 71 Updating the BIOS...71 Updating the BIOS in Windows...71 Updating the BIOS using the USB drive in Windows 71 Updating the BIOS in Linux and Ubuntu...71 Updating the BIOS from the F12 One-Time boot menu 72 Chapter 5: Troubleshooting...73 Handling swollen Lithium-ion batteries...73 Locate the Service Tag or Express Service Code of your Dell computer 73 System-diagnostic lights...74 SupportAssist diagnostics...75 Built-in self-test (BIST)...75 M-BIST...75 4 Contents