Lenovo 300 User Manual

Replacingthepowerswitchboard
Note:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.
Note:Itmaybehelpfultoplacethecomputerface-downonasoftflatsurfaceforthisprocedure.Lenovo
recommendsthatyouuseablanket,towel,orothersoftclothtoprotectthecomputerscreenfromscratches
orotherdamage.
Toreplacethepowerswitchboard
Step1.Removeanymedia(disks,CDs,DVDs,ormemorycards)fromthedrives,shutdowntheoperating
system,andturnoffthecomputerandallattacheddevices.
Step2.Unplugallpowercordsfromelectricaloutlets.
Step3.Disconnectallcablesattachedtothecomputer.Thisincludespowercords,input/output(I/O)
cables,andanyothercablesthatareconnectedtothecomputer.Referto“Leftandrightview”
and“Rearview”forhelpwithlocatingthevariousconnectors.
Step4.Removethestandbase.Referto“Removingthestandbase”.
Step5.Removethefootcover.Referto“Removingthefootcover”.
Step6.Removethehinge.Referto“Removingthehinge” .
Step7.Removetherearcover.Referto“Removingtherearcover”.
Step8.Pushthelockingpinoutwardtoreleasethepowerswitchboard,thenliftupthepowerswitch
boardtoremoveit.
Step9.Disconnectthedatacablefromthepowerswitchboard.
Step10.Toinstallthepowerswitchboard:
a.Connectthecabletothenewpowerswitchboard.
b.Attachthenewpowerswitchboardtothechassis.
c.Securethepowerswitchboardwiththelockingpins.
Step11.Reattachtherearcover,hinge,footcoverandstandbase.
38LenovoAll-In-One300ComputerHardwareMaintenanceManual

Lenovo 300 Specifications

General

Operating System	Windows 10 Home
Form Factor	Tower
Graphics	Integrated Intel HD Graphics
Connectivity	WiFi 802.11 a/c, Bluetooth
Ports	USB 3.0, USB 2.0, HDMI, VGA, Ethernet
Optical Drive	Optional DVD-RW
Dimensions	360 mm x 160 mm x 278.5 mm (14.17" x 6.30" x 10.96")