dell latitude c840 User Manual
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Page 31
![Page 31
Display: Dell Latitude C840 Service Manual
1M2.5 x 6-mm screws (2)
1. Remove the
hinge cover.
NOTICE: Remove the display flex cable before you remove the display
assembly.
file:///F|/Service%20Manuals/Dell/Latitude/c840/display.htm (4 of 10) \
[2/28/2004 8:03:40 AM]](http://img.usermanuals.tech/thumb/19/48086/w300_dell-latitude-c840-service-manual-30.png "Page 31
Display: Dell Latitude C840 Service Manual
1M2.5 x 6-mm screws (2)
1. Remove the
hinge cover.
NOTICE: Remove the display flex cable before you remove the display
assembly.
file:///F|/Service%20Manuals/Dell/Latitude/c840/display.htm (4 of 10) \
[2/28/2004 8:03:40 AM]")
Display: Dell Latitude C840 Service Manual 1M2.5 x 6-mm screws (2) 1. Remove the hinge cover. NOTICE: Remove the display flex cable before you remove the display assembly. file:///F|/Service%20Manuals/Dell/Latitude/c840/display.htm (4 of 10) \ [2/28/2004 8:03:40 AM]
Page 32
![Page 32
Display: Dell Latitude C840 Service Manual
1 M2.5 x 6-mm screw
2 strain relief
3 display flex cable
4 pull loop
2. Remove the M2.5 x 6-mm flex-cable strain relief screw, and then use the \
pull loop to remove the display flex cable from the graphics card.
NOTICE: When reconnecting the flex cable, press down on both ends of the
connector, not in the middle. Pressing the middle of the connector can d\
amage
fragile components.
3. Open the display and, from the back of the computer, remove the two...](http://img.usermanuals.tech/thumb/19/48086/w300_dell-latitude-c840-service-manual-31.png "Page 32
Display: Dell Latitude C840 Service Manual
1 M2.5 x 6-mm screw
2 strain relief
3 display flex cable
4 pull loop
2. Remove the M2.5 x 6-mm flex-cable strain relief screw, and then use the \
pull loop to remove the display flex cable from the graphics card.
NOTICE: When reconnecting the flex cable, press down on both ends of the
connector, not in the middle. Pressing the middle of the connector can d\
amage
fragile components.
3. Open the display and, from the back of the computer, remove the two...")
Display: Dell Latitude C840 Service Manual 1 M2.5 x 6-mm screw 2 strain relief 3 display flex cable 4 pull loop 2. Remove the M2.5 x 6-mm flex-cable strain relief screw, and then use the \ pull loop to remove the display flex cable from the graphics card. NOTICE: When reconnecting the flex cable, press down on both ends of the connector, not in the middle. Pressing the middle of the connector can d\ amage fragile components. 3. Open the display and, from the back of the computer, remove the two...
Page 33
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Display: Dell Latitude C840 Service Manual
file:///F|/Service%20Manuals/Dell/Latitude/c840/display.htm (6 of 10) \
[2/28/2004 8:03:40 AM]](http://img.usermanuals.tech/thumb/19/48086/w300_dell-latitude-c840-service-manual-32.png "Page 33
Display: Dell Latitude C840 Service Manual
file:///F|/Service%20Manuals/Dell/Latitude/c840/display.htm (6 of 10) \
[2/28/2004 8:03:40 AM]")
Display: Dell Latitude C840 Service Manual file:///F|/Service%20Manuals/Dell/Latitude/c840/display.htm (6 of 10) \ [2/28/2004 8:03:40 AM]
Page 34
![Page 34
Display: Dell Latitude C840 Service Manual
1M2.5 x 4-mm screws (6) 8M2 x 3-mm screws
(6)
2 rubber screw covers (4) 9top cover
3 display bezel 10hinge cover
4 plastic tabs (6) 11display flex cable
5 M2.5 x 4-mm screw 12display panel
6 flex-cable mounting
bracket 13
plastic screw covers
(2)
7 display latch
Display Bezel
1. Use a scribe to pry out the four rubber screw covers located across the \
top of
the bezel.
2. Remove the four M2.5 x 4-mm screws located across the top of the bezel. \
3....](http://img.usermanuals.tech/thumb/19/48086/w300_dell-latitude-c840-service-manual-33.png "Page 34
Display: Dell Latitude C840 Service Manual
1M2.5 x 4-mm screws (6) 8M2 x 3-mm screws
(6)
2 rubber screw covers (4) 9top cover
3 display bezel 10hinge cover
4 plastic tabs (6) 11display flex cable
5 M2.5 x 4-mm screw 12display panel
6 flex-cable mounting
bracket 13
plastic screw covers
(2)
7 display latch
Display Bezel
1. Use a scribe to pry out the four rubber screw covers located across the \
top of
the bezel.
2. Remove the four M2.5 x 4-mm screws located across the top of the bezel. \
3....")
Display: Dell Latitude C840 Service Manual 1M2.5 x 4-mm screws (6) 8M2 x 3-mm screws (6) 2 rubber screw covers (4) 9top cover 3 display bezel 10hinge cover 4 plastic tabs (6) 11display flex cable 5 M2.5 x 4-mm screw 12display panel 6 flex-cable mounting bracket 13 plastic screw covers (2) 7 display latch Display Bezel 1. Use a scribe to pry out the four rubber screw covers located across the \ top of the bezel. 2. Remove the four M2.5 x 4-mm screws located across the top of the bezel. \ 3....
Page 35
![Page 35
Display: Dell Latitude C840 Service Manual
2. Detach the display flex cable from the strain relief and the graphics card.
3. Remove the
display bezel.
4. Remove the M2.5 x 4-mm screw that secures the plastic flex-cable mountin\
g bracket to the top cover.
5. Remove the six M2 x 3-mm screws (three on each side) from the right an\
d left sides of the panel.
6. Lift the display panel and flex cable out of the top cover.
7. Disconnect the flex cable from the two connectors (one ZIF and one...](http://img.usermanuals.tech/thumb/19/48086/w300_dell-latitude-c840-service-manual-34.png "Page 35
Display: Dell Latitude C840 Service Manual
2. Detach the display flex cable from the strain relief and the graphics card.
3. Remove the
display bezel.
4. Remove the M2.5 x 4-mm screw that secures the plastic flex-cable mountin\
g bracket to the top cover.
5. Remove the six M2 x 3-mm screws (three on each side) from the right an\
d left sides of the panel.
6. Lift the display panel and flex cable out of the top cover.
7. Disconnect the flex cable from the two connectors (one ZIF and one...")
Display: Dell Latitude C840 Service Manual 2. Detach the display flex cable from the strain relief and the graphics card. 3. Remove the display bezel. 4. Remove the M2.5 x 4-mm screw that secures the plastic flex-cable mountin\ g bracket to the top cover. 5. Remove the six M2 x 3-mm screws (three on each side) from the right an\ d left sides of the panel. 6. Lift the display panel and flex cable out of the top cover. 7. Disconnect the flex cable from the two connectors (one ZIF and one...
Page 36
![Page 36
Display: Dell Latitude C840 Service Manual
1 ZIF connector
2 standard connector
Replacing the Display Panel
NOTE: Use a magnetic screwdriver to reassemble the display panel in the
display.
1. Connect the flex cable to the two connectors on the back of the display \
panel.
2. Place the display panel in the top cover, taking care that the flex cabl\
e is in place and is not crushed or crimped.
3. Reinstall the M2.5 x 4-mm screw that secures the flex-cable mounting bra\
cket to the top cover....](http://img.usermanuals.tech/thumb/19/48086/w300_dell-latitude-c840-service-manual-35.png "Page 36
Display: Dell Latitude C840 Service Manual
1 ZIF connector
2 standard connector
Replacing the Display Panel
NOTE: Use a magnetic screwdriver to reassemble the display panel in the
display.
1. Connect the flex cable to the two connectors on the back of the display \
panel.
2. Place the display panel in the top cover, taking care that the flex cabl\
e is in place and is not crushed or crimped.
3. Reinstall the M2.5 x 4-mm screw that secures the flex-cable mounting bra\
cket to the top cover....")
Display: Dell Latitude C840 Service Manual 1 ZIF connector 2 standard connector Replacing the Display Panel NOTE: Use a magnetic screwdriver to reassemble the display panel in the display. 1. Connect the flex cable to the two connectors on the back of the display \ panel. 2. Place the display panel in the top cover, taking care that the flex cabl\ e is in place and is not crushed or crimped. 3. Reinstall the M2.5 x 4-mm screw that secures the flex-cable mounting bra\ cket to the top cover....
Page 37
![Page 37
Display: Dell Latitude C840 Service Manual
1. Remove the
hinge cover.
2. Detach the
display flex cable from the strain relief and the graphics card.
3. Remove the
display bezel.
4. Remove the
display panel from the top cover.
5. Remove the display latch by disengaging the latch and captive spring.
Back to Contents Page
file:///F|/Service%20Manuals/Dell/Latitude/c840/display.htm (10 of 10)\
[2/28/2004 8:03:40 AM]](http://img.usermanuals.tech/thumb/19/48086/w300_dell-latitude-c840-service-manual-36.png "Page 37
Display: Dell Latitude C840 Service Manual
1. Remove the
hinge cover.
2. Detach the
display flex cable from the strain relief and the graphics card.
3. Remove the
display bezel.
4. Remove the
display panel from the top cover.
5. Remove the display latch by disengaging the latch and captive spring.
Back to Contents Page
file:///F|/Service%20Manuals/Dell/Latitude/c840/display.htm (10 of 10)\
[2/28/2004 8:03:40 AM]")
Display: Dell Latitude C840 Service Manual 1. Remove the hinge cover. 2. Detach the display flex cable from the strain relief and the graphics card. 3. Remove the display bezel. 4. Remove the display panel from the top cover. 5. Remove the display latch by disengaging the latch and captive spring. Back to Contents Page file:///F|/Service%20Manuals/Dell/Latitude/c840/display.htm (10 of 10)\ [2/28/2004 8:03:40 AM]
Page 38
![Page 38
Microprocessor Thermal-Cooling Assembly: Dell Latitude C840 Service Manu\
al
Back to Contents Page
Microprocessor Thermal-Cooling
Assembly
Dell™ Latitude™ C840 Service Manual
NOTICE: Disconnect the computer and attached devices from electrical outlets
and remove any installed batteries.
NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by
periodically touching unpainted metal on the computer.
1 microprocessor thermal-
cooling assembly...](http://img.usermanuals.tech/thumb/19/48086/w300_dell-latitude-c840-service-manual-37.png "Page 38
Microprocessor Thermal-Cooling Assembly: Dell Latitude C840 Service Manu\
al
Back to Contents Page
Microprocessor Thermal-Cooling
Assembly
Dell™ Latitude™ C840 Service Manual
NOTICE: Disconnect the computer and attached devices from electrical outlets
and remove any installed batteries.
NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by
periodically touching unpainted metal on the computer.
1 microprocessor thermal-
cooling assembly...")
Microprocessor Thermal-Cooling Assembly: Dell Latitude C840 Service Manu\ al Back to Contents Page Microprocessor Thermal-Cooling Assembly Dell™ Latitude™ C840 Service Manual NOTICE: Disconnect the computer and attached devices from electrical outlets and remove any installed batteries. NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by periodically touching unpainted metal on the computer. 1 microprocessor thermal- cooling assembly...
Page 39
![Page 39
Microprocessor Thermal-Cooling Assembly: Dell Latitude C840 Service Manu\
al
2microprocessor retaining
clip
Removing the Microprocessor Thermal-Cooling
Assembly
1. Follow the instructions in Preparing to Work Inside the Computer.
2. Remove the
keyboard.
3. Remove the
hinge cover.
4. Insert a non-marring plastic scribe into the latch mechanism at the left\
side of the microprocessor retaining clip. Pry open the clip by pivoting the top\
of the
screwdriver toward the right side of the...](http://img.usermanuals.tech/thumb/19/48086/w300_dell-latitude-c840-service-manual-38.png "Page 39
Microprocessor Thermal-Cooling Assembly: Dell Latitude C840 Service Manu\
al
2microprocessor retaining
clip
Removing the Microprocessor Thermal-Cooling
Assembly
1. Follow the instructions in Preparing to Work Inside the Computer.
2. Remove the
keyboard.
3. Remove the
hinge cover.
4. Insert a non-marring plastic scribe into the latch mechanism at the left\
side of the microprocessor retaining clip. Pry open the clip by pivoting the top\
of the
screwdriver toward the right side of the...")
Microprocessor Thermal-Cooling Assembly: Dell Latitude C840 Service Manu\ al 2microprocessor retaining clip Removing the Microprocessor Thermal-Cooling Assembly 1. Follow the instructions in Preparing to Work Inside the Computer. 2. Remove the keyboard. 3. Remove the hinge cover. 4. Insert a non-marring plastic scribe into the latch mechanism at the left\ side of the microprocessor retaining clip. Pry open the clip by pivoting the top\ of the screwdriver toward the right side of the...
Page 40
![Page 40
Microprocessor Thermal-Cooling Assembly: Dell Latitude C840 Service Manu\
al
NOTICE: To ensure maximum cooling for the microprocessor, do not touch the
heat transfer areas on the microprocessor thermal-cooling assembly. The \
oils in
your skin reduce the heat transfer capability of the thermal pads.
5. Lift out the thermal-cooling assembly.
Back to Contents Page
file:///F|/Service%20Manuals/Dell/Latitude/c840/thermal.htm (3 of 3) [\
2/28/2004 8:03:41 AM]](http://img.usermanuals.tech/thumb/19/48086/w300_dell-latitude-c840-service-manual-39.png "Page 40
Microprocessor Thermal-Cooling Assembly: Dell Latitude C840 Service Manu\
al
NOTICE: To ensure maximum cooling for the microprocessor, do not touch the
heat transfer areas on the microprocessor thermal-cooling assembly. The \
oils in
your skin reduce the heat transfer capability of the thermal pads.
5. Lift out the thermal-cooling assembly.
Back to Contents Page
file:///F|/Service%20Manuals/Dell/Latitude/c840/thermal.htm (3 of 3) [\
2/28/2004 8:03:41 AM]")
Microprocessor Thermal-Cooling Assembly: Dell Latitude C840 Service Manu\ al NOTICE: To ensure maximum cooling for the microprocessor, do not touch the heat transfer areas on the microprocessor thermal-cooling assembly. The \ oils in your skin reduce the heat transfer capability of the thermal pads. 5. Lift out the thermal-cooling assembly. Back to Contents Page file:///F|/Service%20Manuals/Dell/Latitude/c840/thermal.htm (3 of 3) [\ 2/28/2004 8:03:41 AM]