Inspiron 7400 Service Manual

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 listThe following table provides the different screws used in your computer.
Component	Secured to	Screw type	Quantity	Screw image
Base cover	Palm-rest and keyboard assembly	M2x5	4
Base cover	Palm-rest and keyboard assembly	M2x3.5+2.5 (captive)	3
4-cell battery	Palm-rest and keyboard assembly	M2x2	4
4-cell battery	Palm-rest and keyboard assembly	M1.6x4	1
6-cell battery	Palm-rest and keyboard assembly	M2x3	4
6-cell battery	Palm-rest and keyboard assembly	M1.6x4.5	1
M.2 2230 solid-state drive bracket	System board	M2x2.5	1
M.2 2280 solid-state drive/Intel Optane	System board	M2x2.5	1
Heat sink	System board	Captive	For computers without discrete graphics: 4 For computers with discrete graphics: 7
Fan	Palm-rest and keyboard assembly	M2x3	2
Display assembly	Palm-rest and keyboard assembly	M2x4	4
Power-adapter port	Palm-rest and keyboard assembly	M2x3	1
Touchpad bracket	Palm-rest and keyboard assembly	M2x2	3
Touchpad	Palm-rest and keyboard assembly	M2x2	2
I/O board	Palm-rest and keyboard assembly	M1.6x2.5	1
I/O board	Palm-rest and keyboard assembly	M2x2	1
Power-button bracket	Palm-rest and keyboard assembly	M2x3	3
Power-button board	Palm-rest and keyboard assembly	M2x3	2
Wireless-card bracket	System board	M2x2.5	1
Touchpad	Palm-rest and keyboard assembly	M2x2	2
Touchpad bracket	Palm-rest and keyboard assembly	M2x2	3
Wireless-card bracket	System board	M2x3	1
System board	Palm-rest and keyboard assembly	M2x2	1 NOTE Only on computers with a 6-cell battery