Working on Your Computer
1
Before Working Inside Your Computer
Use the following safety guidelines to help protect your computer from potential
damage and to help to ensure your personal safety. Unless otherwise noted,
each procedure included in this document assumes that the following
conditions exist:
• You have performed the steps in Working on Your Computer.
• You have read the safety information that shipped with your computer.
• A component can be replaced or--if purchased separately--installed by
performing the removal procedure in reverse order.
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 www.dell.com/regulatory_compliance.
CAUTION: Many repairs may only be done by a certified service technician. You
should only perform troubleshooting and simple repairs as authorized in your
product documentation, or as directed by the online or telephone service and
support team. Damage due to servicing that is not authorized by Dell is not covered
by your warranty. Read and follow the safety instructions that came with the
product.
CAUTION: To avoid electrostatic discharge, ground yourself by using a wrist
grounding strap or by periodically touching an unpainted metal surface, such as a
connector on the back of the computer.
CAUTION: Handle components and cards with care. Do not touch the components
or contacts on a card. Hold a card by its edges or by its metal mounting bracket.
Hold a component such as a processor by its edges, not by its pins.
CAUTION: When you disconnect a cable, pull on its connector or on its pull-tab, not
on the cable itself. Some cables have connectors with locking tabs; if you are
disconnecting this type of cable, press in on the locking tabs before you disconnect
the cable. As you pull connectors apart, keep them evenly aligned to avoid bending
any connector pins. Also, before you connect a cable, ensure that both connectors
are correctly oriented and aligned.
9
Summary of Contents for Latitude E6420
Page 8: ...8 ...
Page 20: ...20 ...
Page 26: ...26 ...
Page 38: ...9 Slide and remove the WLAN card out from its slot on the system board 38 ...
Page 40: ...40 ...
Page 42: ...9 Slide the WWAN card from its connector and remove it from the computer 42 ...
Page 44: ...44 ...
Page 50: ...50 ...
Page 52: ...10 Disconnect the bluetooth cable 52 ...
Page 54: ...54 ...
Page 59: ...9 Remove the tape securing the keyboard cable from the keyboard 10 Unlock the cable holder 59 ...
Page 64: ...64 ...
Page 70: ...13 Remove the Smart Card Reader from the computer 70 ...
Page 72: ...72 ...
Page 74: ...16 Remove the media board from the computer 74 ...
Page 76: ...76 ...
Page 80: ...22 Remove the screws from the video cable holder 23 Remove the video cable holder 80 ...
Page 83: ...29 Slide to unlock system board from the port connectors 30 Remove the system board 83 ...
Page 86: ...23 Unthread the speaker cable 24 Remove the speaker from the system 86 ...
Page 88: ...88 ...
Page 90: ...24 Unthread the video and wireless antenna cables 25 Unthread the modem cable 90 ...
Page 92: ...29 Remove the whole modem cable assembly by pulling it out from the base 92 ...
Page 94: ...94 ...
Page 96: ...22 Remove the I O board from the computer 96 ...
Page 98: ...98 ...
Page 100: ...23 Remove the DC in bracket 24 Remove the DC in cable from the system 100 ...
Page 101: ...25 Push in the DC in trim and remove it from the system 101 ...
Page 105: ...105 ...
Page 109: ...109 ...
Page 116: ...116 ...
Page 118: ...118 ...
Page 128: ...128 ...
Page 144: ...144 ...
