Samsung SCX-5312F Service Manual

Also see for Office Master SCX-5312F: Manual Driver manual Driver guide Product guide Manual Del Usuario

Contents

PrecautionsSamsung Electronics1-21-3 ESD Precautions1. Certain semiconductor devices can be easilydamaged by static electricity. Such componentsare commonly called “Electrostatically Sensitive(ES) Devices”, or ESDs. Examples of typicalESDs are: integrated circuits, some field effecttransistors, and semiconductor “chip” compo-nents.The techniques outlined below should be fol-lowed to help reduce the incidence of componentdamage caused by static electricity.CAUTION : Be sure no power is applied to the chassisor circuit, and observe all other safety pre-cautions.2. Immediately before handling a semiconductorcomponent or semiconductor-equipped assem-bly, drain off any electrostatic charge on yourbody by touching a known earth ground. Alterna-tively, employ a commercially available wriststrap device, which should be removed for yourpersonal safety reasons prior to applying powerto the unit under test.3. After removing an electrical assembly equippedwith ESDs, place the assembly on a conductivesurface, such as aluminum or copper foil, or con-ductive foam, to prevent electrostatic chargebuildup in the vicinity of the assembly.4. Use only a grounded tip soldering iron to solderor desolder ESDs.Use only an “anti-static” solder removal device.Some solder removal devices not classified as“anti-static” can generate electrical charges suffi-cient to damage ESDs.5. Do not use Freon-propelled chemicals. Whensprayed, these can generate electrical chargessufficient to damage ESDs.6. Do not remove a replacement ESD from its pro-tective packaging until immediately before install-ing it. Most replacement ESDs are packagedwith all leads shorted together by conductivefoam, aluminum foil, or a comparable conductivematerial.7. Immediately before removing the protectiveshorting material from the leads of a replace-ment ESD, touch the protective material to thechassis or circuit assembly into which the devicewill be installed.8. Maintain continuous electrical contact betweenthe ESD and the assembly into which it will beinstalled, until completely plugged or solderedinto the circuit.9. Minimize bodily motions when handling unpack-aged replacement ESDs. Normal motions, suchas the brushing together of clothing fabric andlifting one’s foot from a carpeted floor, can gener-ate static electricity sufficient to damage an ESD.1-4 Super Capacitor or Lithium Battery Precautions1. Exercise caution when replacing a super capaci-tor or Lithium battery. There could be a danger ofexplosion and subsequent operator injury and/orequipment damage if incorrectly installed.2. Be sure to replace the battery with the same orequivalent type recommended by the manufac-turer.3. Super capacitor or Lithium batteries contain toxicsubstances and should not be opened, crushed,or burned for disposal.4. Dispose of used batteries according to the manu-facture’s instructions.