● If you remove a key, use a specially designed key puller to prevent damage to the keys. This tool isavailable through many electronic supply outlets.CAUTION: Never remove a wide leveled key (like the space bar) from the keyboard. If these keys areimproperly removed or installed, the keyboard may not function properly.● Cleaning under a key may be done with a swab moistened with isopropyl alcohol and squeezed out. Becareful not to wipe away lubricants necessary for proper key functions. Use tweezers to remove anyfibers or dirt in confined areas. Allow the parts to air dry before reassembly.Cleaning the monitor● Wipe the monitor screen with a clean cloth moistened with water or with a towelette designed forcleaning monitors. Do not use sprays or aerosols directly on the screen; the liquid may seep into thehousing and damage a component. Never use solvents or flammable liquids on the monitor.● To clean the monitor body follow the procedures in Cleaning the Computer Case on page 15.Cleaning the mouseBefore cleaning the mouse, ensure that the power to the computer is turned off.● Clean the mouse ball by first removing the retaining plate and the ball from the housing. Pull out anydebris from the ball socket and wipe the ball with a clean, dry cloth before reassembly.● To clean the mouse body, follow the procedures in Cleaning the Computer Case on page 15.Service considerationsListed below are some of the considerations that you should keep in mind during the disassembly andassembly of the computer.Tools and software RequirementsTo service the computer, you need the following:● Torx T-15 screwdriver● Torx T-15 screwdriver with small diameter shank (for certain front bezel removal)● Flat-bladed screwdriver (may sometimes be used in place of the Torx screwdriver)● Phillips #2 screwdriver● Diagnostics software● Tamper-resistant T-15 wrenchScrewsThe screws used in the computer are not interchangeable. They may have standard or metric threads and maybe of different lengths. If an incorrect screw is used during the reassembly process, it can damage the unit. HPstrongly recommends that all screws removed during disassembly be kept with the part that was removed,then returned to their proper locations.CAUTION: Metric screws have a black finish. U.S. screws have a silver finish and are used on hard drives only.CAUTION: As each subassembly is removed from the computer, it should be placed away from the work areato prevent damage.16 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation
