34PPC-120/140 User's Manual4.1 Overview of Hardware Installation andUpgradingThe panel PC consists of a PC-based computer that is housed in a plasticrear panel and a shielding case. Your HDD, SDRAM, power supply, CPU,and so on are all readily accessible by removing the rear panel andshielding case. Any maintenance or hardware upgrades can be easilycompleted after removing the rear panel and shielding case.If you are a systems integrator and need to know how to completelydisassemble the panel PC, you can find more useful information inAppendix C.Warning! Do not remove the rear cover until you have verifiedthat no power is flowing within the panel PC. Powermust be switched off and the power cord must beunplugged. Every time you service the panel PC, youshould be aware of this.
