Epson NX User Manual - Page 54
General Service Information, contamination may result. Place circuit boards and disk drives
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General Service Information Removing and Replacing Subassemblies This chapter provides instructions for removing and replacing the major subassemblies of the Epson NX. The following precautions must be observed when performing any service procedures. DANGER Turn off the computer and all peripheral devices and disconnect all peripheral interface cables from the system unit before removing the system unit cover. Failure to heed this warning could expose you to an electrical shock hazard. Remove the AC power cord only when you need to disassemble the system. Components on the main system board can get very hot. After turning off the computer, wait for at least 10 minutes for the components to cool before removing the cover. WARNING Most of the components used in the manufacture of circuit boards and disk drives in the computer are static-sensitive CMOS devices. To prevent damage from static electricity, always discharge body static by touching a grounded surface before opening the computer's case. Always wear a grounded wrist strap when handling any circuit boards or cables inside the computer. Do not touch any of the circuit board components or connector pins with your hands, including the gold edge connectors, as damage from static discharge and/or contamination may result. Place circuit boards and disk drives on anti-static rubber mats or similar anti-static surfaces when they are removed from the computer. Do not rock, twist, or physically stress the circuit boards while removing them, as permanent damage may result. Follow all instructions in the order given. Failure to do so may cause damage to a subassembly or component. Caution Do not allow the speaker attached to the front of the system chassis to come in close proximity to diskettes, hard disk drives, or other magnetic media, as the speaker's magnetic field can cause loss of data. Epson NX Service Manual 3-1