AFL-W19A/17D/W15A-N270 Panel PCPage 894.1 System Maintenance IntroductionIf the components of the AFL-W19A/17D/W15A-N270 fail they must be replaced, such asthe wireless LAN module or the motherboard. Please contact the system reseller orvendor to purchase the replacement parts. Back cover removal instructions and jumpersettings for the AFL-W19A/17D/W15A-N270 are described below.4.2 Motherboard ReplacementIn the case of motherboard failure, please contact an IEI sales representative, reseller orsystem vendor. The motherboard is accessible after opening the rear cover.4.3 Cover RemovalWARNING!Turn off the power before removing the back cover. Risk ofelectrocution. Severe damage to the product and injury to the bodymay occur if internal parts are touched while the power is still on.WARNING!Take antistatic precautions when working on the internalcomponents. Some internal components are easily damaged ordestroyed by electrostatic discharge. Take antistatic precautions toprevent electrostatic discharge.To replace any of the following components, Memory module Wireless LAN module InverterThe back cover of the AFL-W19A/17D/W15A-N270 must be removed. To remove the backcover, loosen the four silver screws, slide the cover down and then lift to remove.