Dell Inspiron 620s Service Manual

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Page 1 Microsoft Corporation in the United States and/or other countries. Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Inc. disclaims any proprietary interest in trademarks and trade names other than its own.
Page 2: Before You Begin
Regulatory Compliance Homepage at www.dell.com/regulatory_compliance. 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. CAUTION: When you disconnect a cable, pull on its connector or on its pull-tab, not on the cable itself.
Page 3 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. ...
Page 4: Removing The Front Bezel
Do not operate your computer with any cover(s) (including computer covers, front bezels, filler brackets, front-panel inserts, etc.) removed. 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. Removing the Front Bezel ...
Page 5: Replacing The Front Bezel
Replacing the Front Bezel 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 (3) 3 front bezel clamps (4) 4 front panel slots (4)
Page 6: Flashing The Bios
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 at the top of your computer.
Page 7: Removing Pci Express Cards
Do not operate your computer with any cover(s) (including computer covers, bezels, filler brackets, front-panel inserts, etc.) removed. 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. Removing PCI Express Cards ...
Page 8: Replacing Pci Express Cards
1 securing tab 2 PCI Express x16 card slot 3 PCI Express x16 card 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...
Page 9 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. Push the securing tab to the side and place the PCI Express card in the slot on the system board and press down firmly.
Page 10: Configuring Your Computer After Removing Or Installing The Pci Express Card
1 PCI Express x16 card slot 2 PCI Express x16 card 4. Replace the card retention bracket (see Replacing the Card Retention Bracket). 5. 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. ...
Page 11: Removing The Card Retention Bracket
Do not operate your computer with any cover(s) (including computer covers, bezels, filler brackets, front-panel inserts, etc.) removed. 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. Removing the Card Retention Bracket ...
Page 12 1 release tab 2 card retention bracket Back to Contents Page ...
Page 13: Removing The Coin-Cell Battery
Do not operate your computer with any cover(s) (including computer covers, bezels, filler brackets, front-panel inserts, etc.) removed. 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. Removing the Coin-Cell Battery ...
Page 14 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 Back to Contents Page ...
Page 15: Removing The Computer Cover
Do not operate your computer with any cover(s) (including computer covers, bezels, filler brackets, front-panel inserts, etc.) removed. 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. CAUTION: Ensure that sufficient space exists to support the computer with the cover removed—at least 30 cm (1 ft.) of desk top space.
Page 16 5. Press the computer cover down and slide it towards the front of the computer. 6. Using a screwdriver, replace the two screws that secure the computer cover to the chassis. computer cover screws (2) slots 7. Place the computer in an upright position. Back to Contents Page ...
Page 17: Removing The Processor
Do not operate your equipment with any cover(s) (including computer covers, bezels, filler brackets, front-panel inserts, etc.) removed. 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. CAUTION: Do not perform the following steps unless you are familiar with hardware removal and replacement.
Page 18: Replacing The Processor
1 processor 2 socket Replacing the Processor CAUTION: Ground yourself by touching an unpainted metal surface at 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. ...
Page 19 1 alignment post 2 tab 3 processor cover 4 release lever 5 processor 6 processor cover notch 8. 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.
Page 20: Removing The Hard-Drive Assembly
Do not operate your computer with any cover(s) (including computer covers, bezels, filler brackets, front-panel inserts, etc.) removed. 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. Hard Drive ...
Page 21 5. If removing the hard drive changes the drive configuration, ensure that you reflect these changes in the system setup (see System Setup). Removing the Hard-Drive Bezel 1. Follow the instructions in Before You Begin. 2. Remove the hard-drive assembly (see Removing the Hard-Drive Assembly).
Page 22: Replacing The Hard-Drive Assembly
Replacing the Hard-Drive Assembly 1. Follow the instructions in Before You Begin. 2. Check the documentation that shipped with the drive to verify that it is configured for your computer. 3. Place the hard-drive assembly in the hard-drive bay. ...
Page 23: Replacing The Optical Drive
6. 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 original optical drive and insert it in the new optical drive. screw ...
Page 24: Removing The Chassis Fan
Do not operate your computer with any cover(s) (including computer covers, bezels, filler brackets, front-panel inserts, etc.) removed. 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. Chassis Fan ...
Page 25: Removing The Processor Fan And Heat-Sink Assembly
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.
Page 26 5. Align the four captive screws on the processor fan and heat-sink assembly with the screw holes on the system board. 6. Tighten the four captive screws that secure the processor fan and heat-sink assembly to the system board. NOTE: Ensure that the processor fan and heat-sink assembly is correctly seated and secure.
Page 27: Removing The Front I/O Panel
Do not operate your computer with any cover(s) (including computer covers, bezels, filler brackets, front-panel inserts, etc.) removed. 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. Removing the Front I/O Panel NOTE: Make note of the routing of all cables as you remove them so that you can re-route them correctly when installing the new front I/O panel.
Page 28: Replacing The Front I/O Panel
Replacing the Front I/O Panel CAUTION: To avoid damage to the cable connectors and the cable routing clips, carefully slide the front I/O panel into the front I/O panel clamp slot. 1. Follow the instructions in Before You Begin.
Page 29: Removing The Memory Module(S)
If you remove the original memory module(s) from your computer during a memory upgrade, keep them separate from any new memory module(s) that you may have, even if you purchased the new memory module(s) from Dell. If possible, do not pair an original memory module with a new memory module.
Page 30 cutouts (2) notch 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.
Page 31: Removing The Power Supply
Do not operate your computer with any cover(s) (including computer covers, bezels, filler brackets, front-panel inserts, etc.) removed. 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. Removing the Power Supply ...
Page 32 4. Replace the three 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).
Page 33: Removing The Power Button Module
Do not operate your computer with any cover(s) (including computer covers, bezels, filler brackets, front-panel inserts, etc.) removed. 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. Removing the Power Button Module ...
Page 34 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). ...
Page 35: Removing The System Board
Do not operate your computer with any cover(s) (including computer covers, bezels, filler brackets, front-panel inserts, etc.) removed. 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. Removing the System Board ...
Page 36: Replacing The System Board
Replacing the Processor Fan and Heat-Sink Assembly). 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. CAUTION: Ensure that the heat-sink assembly is correctly seated and secure.
Page 37: System Setup Options
1. Turn on (or restart) your computer. 2. When the DELL logo is displayed, watch for the F2 prompt to appear and then press <F2> immediately. NOTE: The F2 prompt indicates that the keyboard has initialized. This prompt can appear very quickly, so you must watch for it, and then press <F2>.
Page 38 Processor Information Displays the processor type Processor Type Displays the L2 cache size L2 Cache Displays the L3 cache size L3 Cache Memory Information Indicates the amount of memory installed in MB Memory Installed Indicates the memory speed in MHz Memory Speed Indicates the type of installed memory Memory Technology...
Page 39: Boot Sequence
Changing Boot Sequence for the Current Boot You can use this feature to change the current boot sequence, for example, to boot from the CD/DVD/CD-RW drive to run the Dell Diagnostics from the Drivers and Utilities disc. On completion of diagnostic tests, the previous boot sequence is restored.
Page 40: Clearing Forgotten Passwords
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. ...
Page 41 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. ...
Page 42: Technical Overview
(such as a connector on your computer). 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. Inside View of Your Computer...
Page 43 power connector (ATX12V) processor socket processor fan connector memory module connector (DIMM1) (FAN_CPU) memory module connector main power connector (DIMM2) (ATX) power button connector internal speaker connector (LEDH1) (INTSPKR1) SATA drive connector (SATA 2) 10 chassis fan connector (FAN_SYS1) 11 SATA drive connector (SATA 1) 12 SATA drive connector (SATA 0) 13 SATA drive connector 14 CMOS reset jumper (CMOSCLR1)

Dell Inspiron 620s Service Manual

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