akira 14KLS4/CE, Service Manual

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Model No.: 14KLS4CE
Version: 1.0
IMPORTANT SERVICE SAFETY INFORMATION
Operating the receiver outside of its cabinet or with its back removed involves a shock hazard. Work
on these models should only be performed by those who are thoroughly familiar with precautions
necessary when working on high voltage equipment.
Exercise care when servicing this chassis with power applied. Many B plus and high voltage RF
terminals are exposed which, if carelessly contacted, can cause serious shock or result in damage to the
chassis. Maintain interconnecting ground lead connections between chassis, escutcheon, picture tube
dag and tuner when operating chassis.
These receivers have a "polarized" AC line cord. The AC plug is designed to fit into standard AC
outlets in one direction only. The wide blade connects to the 'ground side' and the narrow blade
connects to the 'hot side' of the AC line. This assures that the TV receiver is properly grounded to the
house wiring. If an extension cord must be used, make sure it is of the 'polarized' type.
Since the chassis of this receive is connected to one side of the AC supply during operation, service
should not be attempted by anyone not familiar with the precautions necessary when working on these
types of equipment.
When it is necessary to make measurements or tests with AC power applied to the receiver chassis, an
Isolation Transformer must be used as a safety precaution and to prevent possible damage to transistors.
The Isolation Transformer should be connected between the TV line cord plug and the AC power
outlet.
Certain HV failures can increase X-ray radiation. Receivers should not be operated with HV levels
exceeding the specified rating for their chassis type. The maximum operating HV specified for the
chassis used in these receivers is 23.5kV±1.0kV at zero beam current with a liner voltage of 120V AC.
Higher voltage may also increase the possibility of failure in the HV supply.
It is important to maintain specified values of all components in the horizontal and high voltage circuits
and anywhere else in the received that could cause a rise in high voltage, or operating supply voltages.
No changes should be made to the original design of the receiver.
Components shown in the shaded areas on the schematic diagram and/or identified by in the
replacement parts list should be replaced only with exact factory recommended replacement parts. The
use of unauthorized substitute parts man creates may create shock, fire, X-ray radiation, or other
hazards.