Chapter 2: Removing And Installing Components; Recommended Tools; Screw List - Dell ChengMing 3900 Tower Service Manual

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Removing and installing components
NOTE:
The images in this document may differ from your computer depending on the configuration you ordered.

Recommended tools

The procedures in this document may require the following tools:
● Phillips screwdriver #0
● Phillips screwdriver #1
● Torx #5 (T5) screwdriver
● Plastic scribe

Screw list

NOTE:
When removing screws from a component, it is recommended to note the screw type, the quantity of screws, and
then place them in a screw storage box. This is to ensure that the correct number of screws and correct screw type is
restored when the component is replaced.
NOTE:
Some computers have magnetic surfaces. Ensure that the screws are not left attached to such surfaces when
replacing a component.
NOTE:
Screw color may vary with the configuration ordered.
Table 1. Screw list
Component
Side cover
M2 2230 solid-state drive
M2 2280 solid-state drive
Wireless card
Power-supply unit
2.5-inch HDD bracket
3.5-inch HDD
Heat sink and fan assembly
10
Removing and installing components
Screw type
6x32
M2x3.5
M2x3.5
M2x3 .5
6x32
M3x3.5
6x32
Captive screws
Quantity
2
1
1
1
3
4
4
4
Screw image
2

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