Olivetti PK-516 Service Manual

Contents

3. OTHER MAINTENANCE ITEM Field Service Ver. 1.0 Jan. 20094PK-516MAINTENANCE3. OTHER MAINTENANCE ITEM3.1 Disassembly/Adjustment prohibited itemsA. Paint-locked screwsNOTE• To prevent loose screws, a screw lock in blue or green series color is applied tothe screws.• The screw lock is applied to the screws that may get loose due to the vibrationsand loads created by the use of machine or due to the vibrations created duringtransportation.• If the screw lock coated screws are loosened or removed, be sure to apply a screwlock after the screws are tightened.B. Red-painted screwsNOTE• The screws which are difficult to be adjusted in the field are painted in red in orderto prevent them from being removed by mistake.• Do not remove or loosen any of the red-painted screws in the field. It should alsobe noted that, when two or more screws are used for a single part, only one repre-sentative screw may be marked with the red paint.C. Variable resistors on boardNOTE• Do not turn the variable resistors on boards for which no adjusting instructionsare given in Adjustment/Setting.D. Removal of PWBsCAUTION• When removing a circuit board or other electrical component, refer to “Handling ofPWBs” and follow the corresponding removal procedures.• The removal procedures given in the following omit the removal of connectors andscrews securing the circuit board support or circuit board.• Where it is absolutely necessary to touch the ICs and other electrical componentson the board, be sure to ground your body.Service Manual Y110630-3