AKIRA 14KLS4CE LA-76931IC SERVICE MODE

ENTER SERVICE MODE

• Press " menu" button on the remote control.
• Press "Recall" button thrice to enter factory menu.
• Press [P + or P-] buttons to select an item to adjust.
• Press [V + or V-] buttons to adjust the data value to selected item.
• Press "Recall" button again to "Exit" factory menu.

DEFAULT DATA VALUES

1. H-Phase => 11.
2. OSD - H Position => 25
3. V-Size => 82
4. V-Position => 1
5. V-Lenearity => 22.
6. V-S correction => 4
7. V-Kill => 0
8. Sub - Bright => 50
9. Rf-Agc Auto => 25

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 23.5kV1.0kV 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.

 Model No.: 14KLS4CE Version: 1.0
To determine the presence of high voltage, use accurate high impedance HV meter connected between the second anode lead and the CRT dag grounding device. When servicing the High Voltage System remove static charges from it by connecting a 10K Ohm resistor in series with an insulated wire (such as test probe) between the picture tube dag and 2nd anode lead (Have AC line cord disconnected from AC supply). The picture tube used in this receiver employ integral implosion protection. Replace with a tube of the same type number for continued safety. Do not lift picture tube by the neck. Handle the picture tube only when wearing shatterproof goggles and after discharging the high voltage completely. Keep others without shatter proof goggles away. Before returning the receiver to the user, perform the following safety checks:

1. Inspect all lead dress to make certain that leads are not pinched or that hardware is not lodged between the chassis and other metal parts in the receiver.

2. Replace all protective devices such as non-metallic control knobs, insulating fish papers, cabinet backs, adjustment and compartment covers of shields, isolation resistor-capacitor networks, mechanical insulators etc.

3. To be sure that not shock hazard exists, a check for the presence of leakage current should be made at each exposed metal part having a return path to the chassis (antenna, cabinet metal, screw heads knobs and/or shafts, escutcheon, etc.) in the following manner.

Plug the AC line cord directly into a 110V/220V/240V, AC receptacle. (Do not use an Isolation Transformer during these checks.) All checks must be repeated with the AC line cord plug connection reversed. (If necessary, a non polarized adapter plug must be used only for the purpose of completing these checks.) If available, measure current using an accurate leakage current tester. Any reading of 0.35mA or more is excessive and indicates a potential shock hazard, which must be corrected before returning the receiver to the owner. If a reliable leakage current tester is not available, this alternate method of measurement should be used. Using two clips leads, connect a 1500 Ohm, 10 Watt resistor paralleled by a 0.15MF capacitor in series with a known earth ground, such as a water pipe or conduit and the metal part to be checked. Use a VTVM or VOM with 1000 Ohms per Volt, or higher, sensitivity to measure this AC voltage drop across the resistor. Any reading of 0.35 Volt RMS of more is excessive and indicates potential shock hazard, which must be corrected before returning the receiver to the owner.

ALIGNMENT PROCEDURES 1. Use an Isolation Transformer when performing any service on this chassis.
2. Never disconnect any leads while receiver is in operation.
 3. Disconnect all power before attempting any repairs.
 4. Do not short any position of the circuit while the power is on.
5. For safety reasons, replace components any with identical replacement parts (SEE PARTS LIST).
 6. Before alignment, warm up the TV for at least 30 minutes and demagnetize the CRT with an
external degaussing coil.
7. When removing a PCB or related component, after unfastening or changing a wire, be sure to put
the wire back in its original position.
 8. Inferior silicon grease can damage IC's and transistors. When replacing IC's and transistors, use
only specified silicon grease. Remove all old silicon when applying new silicon.
 9. Before removing the anode cap, discharge electricity because it contains high voltage.