Dell™ Inspiron™ 620 Service Manual Technical Overview Before You Begin Computer Cover Memory Module(s) Front Bezel Card Retention Bracket PCI Express Cards Drives Front I/O Panel Power Button Module Fans Processor Coin-Cell Battery Power Supply System Board System Setup Flashing the BIOS Notes, Cautions, and Warnings NOTE: A NOTE indicates important information that helps you make better use of your computer.
Back to Contents Page Before You Begin Dell™ Inspiron™ 620 Service Manual Technical Specifications Recommended Tools Turning Off Your Computer Safety Instructions This manual provides instructions for removing and installing the components in your computer. Unless otherwise noted, each procedure assumes that the following conditions exist: l You have performed the steps in Turning Off Your Computer and Safety Instructions. l You have read the safety information that shipped with your computer.
2. Turn off your computer (see Turning Off Your Computer) and all attached devices. CAUTION: To disconnect a network cable, first unplug the cable from your computer and then unplug the cable from the network device. 3. Disconnect all telephone or network cables from the computer. 4. Disconnect your computer and all attached devices from their electrical outlets. 5. Disconnect all attached devices from your computer. 6. Press and eject any installed cards from the Media Card Reader. 7.
Back to Contents Page Front Bezel Dell™ Inspiron™ 620 Service Manual Removing the Front Bezel Replacing the Front Bezel WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. WARNING: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the cover.
1. Follow the instructions in Before You Begin. 2. Align and insert the front bezel clamps into the front panel slots. 3. Rotate the front bezel towards the computer until the front bezel tabs snap into place. 1 front bezel 2 front bezel tabs (4) 3 front panel slots (4) 4 front bezel clamps (4) 5 front panel 4. Replace the computer cover (see Replacing the Computer Cover).
Back to Contents Page Flashing the BIOS Dell™ Inspiron™ 620 Service Manual The BIOS may require flashing when an update is available or when replacing the system board. To flash the BIOS: 1. Turn on the computer. 2. Go to support.dell.com/support/downloads. 3. Locate the BIOS update file for your computer. NOTE: The Service Tag for your computer is located on a label on the top of your computer. If you have your computer's Service Tag: a. Click Enter a Tag. b.
Back to Contents Page PCI Express Cards Dell™ Inspiron™ 620 Service Manual Removing PCI Express Cards Replacing PCI Express Cards Configuring Your Computer After Removing or Installing the PCI Express Card WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance.
1 securing tab 2 PCI Express x16 card slot 3 PCI Express x16 card l Press the securing tab down, grasp the card by its top corners, and then ease it out of the connector. 1 securing tab 2 PCI Express x16 card slot 3 PCI Express x16 card 1 securing tab 2 PCI Express x16 card slot 3 PCI Express x16 card 6. If you are removing the card permanently, install a filler bracket in the empty card-slot opening.
1 PCI Express x1 card 2 PCI Express x1 card slot PCI Express x16 card — The securing tab on the PCI Express x16 card slot may vary based on your computer model. Perform one of the following instructions based on the type of securing tab on the PCI Express x16 card slot. l Push the securing tab to the side and place the PCI Express card in the slot on the system board and press down firmly. Ensure that the PCI Express card is fully seated in the slot.
1 PCI Express x16 card slot 2 PCI Express x16 card 4. 5. Replace the card retention bracket (see Replacing the Card Retention Bracket). Connect any cables that should be attached to the card. See the documentation that shipped with the card for information about the card's cable connections. CAUTION: Do not route card cables over or behind the cards. Cables routed over the cards can prevent the computer cover from closing properly or cause damage to the equipment. 6.
Back to Contents Page Card Retention Bracket Dell™ Inspiron™ 620 Service Manual Removing the Card Retention Bracket Replacing the Card Retention Bracket WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. WARNING: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the cover.
Back to Contents Page Coin-Cell Battery Dell™ Inspiron™ 620 Service Manual Removing the Coin-Cell Battery Replacing the Coin-Cell Battery WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. WARNING: A new battery can explode if it is incorrectly installed.
1 coin-cell battery 2 battery socket 3. Replace the computer cover (see Replacing the Computer Cover). 4. Connect your computer and devices to electrical outlets, and then turn them on. 5. Enter system setup (see System Setup) and restore the settings you recorded in step 1.
Back to Contents Page Computer Cover Dell™ Inspiron™ 620 Service Manual Removing the Computer Cover Replacing the Computer Cover WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance.
6. 1 Using a screwdriver, replace the two screws that secure the computer cover to the chassis. screws (2) 7. 2 computer cover Place the computer in an upright position.
Back to Contents Page Processor Dell™ Inspiron™ 620 Service Manual Removing the Processor Replacing the Processor WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. WARNING: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the cover.
1 processor 2 socket Replacing the Processor CAUTION: Ground yourself by touching an unpainted metal surface on the back of the computer. CAUTION: When replacing the processor, do not touch any of the pins inside the socket or allow any objects to fall on the pins in the socket. 1. Follow the instructions in Before You Begin. 2. Unpack the new processor, being careful not to touch the underside of the processor.
1 alignment post 2 tab 4 release lever 8. 3 processor cover 5 processor 6 processor cover notch Clean the thermal grease from the bottom of the heat-sink. CAUTION: Ensure that you apply new thermal grease. New thermal grease is critical for ensuring adequate thermal bonding, which is a requirement for optimal processor operation. 9. 10. Apply the new thermal grease to the top of the processor. Replace the processor fan and heat-sink assembly (see Replacing the Processor Fan and Heat-Sink Assembly).
Back to Contents Page Drives Dell™ Inspiron™ 620 Service Manual Hard Drive(s) Optical Drive WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. WARNING: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the cover.
1 primary hard-drive assembly 2 data cable 3 power cable 4 screws (2) Secondary Hard Drive 1 secondary hard-drive assembly 2 data cable 3 power cable 4 screws (2) 7. Remove the two screws (one on each side) that secure the hard-drive brackets to the hard-drive. 8. Remove the hard-drive brackets off the hard drive. 1 hard drive 3 hard-drive bracket 9.
8. 9. If you are replacing the secondary hard-drive: a. Connect the power cable to the primary and secondary hard-drives. b. Connect the data cable to the secondary hard-drive. Replace the computer cover (see Replacing the Computer Cover). 10. Connect your computer and devices to electrical outlets, and then turn them on. 11. See the documentation that shipped with the hard drive for instructions on installing any software required for drive operation. 12.
1 power cable 2 data cable 3 secondary optical-drive 4 screws (2) 8. Set aside the optical drive in a secure location. Replacing the Optical Drive 1. Follow the instructions in Before You Begin. 2. Remove the screw from the old optical drive and insert it in the new optical drive. 1 screw 3. To install a secondary optical drive, pull the break-away metal plate away from the chassis.
1 break-away metal plate 4. Gently slide the optical drive into the optical drive bay through the front of the computer. 5. Align the screw holes on the optical drive with the screw holes on the chassis. 6. Replace the two screws that secure the optical drive to the chassis. 7. If you are replacing the primary optical-drive, connect the power and data cables to the primary optical-drive. 8. If you are replacing the secondary optical-drive: 9. a.
Back to Contents Page Fans Dell™ Inspiron™ 620 Service Manual Chassis Fan Processor Fan and Heat-Sink Assembly WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. WARNING: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the cover.
4. Connect the chassis fan cable to the system board connector, FAN_SYS1 (see System Board Components). 5. Replace the computer cover (see Replacing the Computer Cover). Processor Fan and Heat-Sink Assembly WARNING: Despite having a plastic shield, the processor fan and heat-sink assembly may be very hot during normal operation. Ensure that it has had sufficient time to cool before you touch it. CAUTION: The processor fan and heat-sink assembly is a single unit. Do not try to remove the fan separately.
7. Connect the processor fan cable to the system board connector, FAN_CPU (see System Board Components). 8. Replace the computer cover (see Replacing the Computer Cover). 9. Connect your computer and devices to electrical outlets, and turn them on.
Back to Contents Page Front I/O Panel Dell™ Inspiron™ 620 Service Manual Removing the Front I/O Panel Replacing the Front I/O Panel WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. WARNING: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the cover.
1. Follow the instructions in Before You Begin. 2. Align and slide the front I/O panel clamps into the front I/O panel clamp slots. 3. Replace the two screws that secure the I/O panel to the front panel. 4. Connect the front I/O panel cables to the system board connectors, AUDIOF1, USBF1, and USBF2 (see System Board Components). 5. Replace the front bezel (see Replacing the Front Bezel). 6. Replace the computer cover (see Replacing the Computer Cover). 7.
Back to Contents Page Memory Module(s) Dell™ Inspiron™ 620 Service Manual Removing the Memory Module(s) Replacing the Memory Module(s) WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. WARNING: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the cover.
1 cutouts (2) 2 tab 3 notch 4 memory module CAUTION: To avoid damage to the memory module, press the memory module straight down into the connector while you apply equal force to each end of the memory module. 4. Insert the memory module into the connector until the memory module snaps into position. If you insert the memory module correctly, the securing clips snap into the cutouts at each end of the memory module. 1 cutouts (2) 2 securing clips (2) (snapped in position) 5.
Back to Contents Page Power Supply Dell™ Inspiron™ 620 Service Manual Removing the Power Supply Replacing the Power Supply WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. WARNING: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the cover.
4. Replace the four screws that secure the power supply to the chassis. 5. Connect the DC power cables to the system board and drives (see System Board Components). 6. Replace the computer cover (see Replacing the Computer Cover). 7. Connect your computer and devices to electrical outlets, and turn them on.
Back to Contents Page Power Button Module Dell™ Inspiron™ 620 Service Manual Removing the Power Button Module Replacing the Power Button Module WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. WARNING: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the cover.
3. Connect the power button module cable to the system board connector, LEDH1 (see System Board Components). 4. Replace the front bezel (see Replacing the Front Bezel). 5. Replace the computer cover (see Replacing the Computer Cover). 6. Connect your computer and devices to electrical outlets and turn them on.
Back to Contents Page System Board Dell™ Inspiron™ 620 Service Manual Removing the System Board Replacing the System Board Entering the Service Tag in the BIOS WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance.
9. 10. Lift the system board up and out of the chassis. Compare the system board that you removed with the replacement system board to ensure that they are identical. NOTE: Some components and connectors on the replacement system board may be in different locations compared to the components and connectors on the existing system board. NOTE: Jumper settings on the replacement system board is preset at the factory. Replacing the System Board 1. Follow the instructions in Before You Begin. 2.
Back to Contents Page System Setup Dell™ Inspiron™ 620 Service Manual Overview Clearing Forgotten Passwords Clearing CMOS Passwords Overview Use the system setup to: l Change the system configuration information after you add, change, or remove any hardware in your computer l Set or change a user-selectable option such as the user password l Read the current amount of memory or set the type of hard drive installed CAUTION: Unless you are an expert computer user, do not change the settings for this p
Asset Tag Displays the asset tag of the computer when the asset tag is present Processor Information Processor Type Displays the processor type L2 Cache Displays the L2 cache size L3 Cache Displays the L3 cache size Memory Information Memory Installed Indicates the amount of memory installed in MB Memory Speed Indicates the memory speed in MHz Memory Technology Indicates the type of installed memory Memory Channel Indicates single channel or dual channel mode Device Information SATA 0 Displ
Hard Disk; CD/DVD; Network; USB Floppy; USB Hard Disk; USB CD/DVD; Disabled (Hard Disk by default) 2nd Boot Priority Specifies the boot sequence from the available devices Hard Disk; CD/DVD; Network; USB Floppy; USB Hard Disk; USB CD/DVD; Disabled (CD/DVD Drive by default) 3rd Boot Priority Specifies the boot sequence from the available devices Hard Disk; CD/DVD; Network; USB Floppy; USB Hard Disk; USB CD/DVD; Disabled (USB Floppy by default) 4th Boot Priority Specifies the boot sequence from the avail
1. Enter system setup (see Entering System Setup). 2. Use the arrow keys to highlight the Boot menu option and press to access the menu. NOTE: Write down your current boot sequence in case you want to restore it. 3. Press the up- and down-arrow keys to move through the list of devices. 4. Press plus (+) or minus (–) to change the boot priority of the device.
Clearing CMOS Passwords WARNING: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer. WARNING: The computer must be disconnected from the electrical outlet to clear the password setting. CAUTION: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell is not covered by your warranty.
Back to Contents Page Technical Overview Dell™ Inspiron™ 620 Service Manual Inside View of Your Computer System Board Components WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance.
1 power connector (ATX12V) 2 processor socket 3 processor fan connector (FAN_CPU) 4 memory module connector (DIMM1) 5 memory module connector (DIMM2) 6 main power connector (ATX) 7 power button connector (LEDH1) 8 9 SATA drive connector (SATA 2) internal speaker connector (INTSPKR1) 10 chassis fan connector (FAN_SYS1) 11 SATA drive connector (SATA 1) 12 SATA drive connector (SATA 0) 13 SATA drive connector (SATA 3) 14 CMOS reset jumper (CMOSCLR1) 15 front panel USB connector (USBF2) 1
Back to Contents Page Dell™ Inspiron™ 620 Service Manual NOTE: A NOTE indicates important information that helps you make better use of your computer. CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. WARNING: A WARNING indicates a potential for property damage, personal injury, or death. Information in this document is subject to change without notice. © 2011 Dell Inc. All rights reserved.
