--Safety NoticeSafety PrecautionsThe following precautions must be observed.1:Comply with all caution and safety-related notes provided on the cabinet back, cabinet bottom, inside thecabinet or on the chassis.:When replacing a chassis in the cabinet, always be certain that all the protective devices are installedproperly, such as, control knobs, adjustment covers or shields, barriers, etc..DO NOT OPERATE THIS TELEVISION WITHOUT THE PROTECTIVE SHIELD IN POSITION ANDPROPERLY SECURED3:Before replacing the cabinet cover, thoroughly inspect the inside of the cabinet to see that no stray parts ortools have been left inside.Before returning any televison to the customer, the service personnel must be sure that it is completely safeto operate without danger of electrical shock.Product Safety NoticeProduct safety should be considered when a component replacement is made in any area of a receiver.Components indicated by mark in the parts list and the schematic diagram designate components in whichsafety can be of special significance.It is particularly recommended that only parts designated on the parts list in this manual be used forcomponent replacement designated by mark .No deviations from resistance wattage or voltage ratings may be made for replacement items designatedby mark .