DIY Do-It-Yourself manuals are made for homeowners and handymen who have mechanical abilities but can use a little training in repairing certain appliances. It is only to be used along with the service manual not as a replacement for it as it applies to the appliance type, not the specific model and will go into more details on repairing the appliance.
Service Manuals generally provide information and instructions pertaining to product disassembly, schematic diagrams, parts lists, exploded views, troubleshooting guides, wiring diagrams, and much, much more.
Replacement Parts List 8. Block Diagram 9. PCB Diagrams Schematic Diagrams. Toshiba 1. Precautions 1. Be sure that all of the built-in protective devices are replaced.
Restore any missing protective shields. When reinstalling the chassis and its assemblies, be sure to restore all pretective devices, including : control knobs and compartment covers. Make sure that there are no cabinet openings through which people--particularly children --might insert fingers and contact dangerous voltages. Such openings include the spacing between the picture tube and the cabinet mask, excessively wide cabinet ventilation slots, and improperly fitted back covers.
If the measured resistance is less than 1. With the unit completely reassembled, plug the AC line cord directly the power outlet. With the unit's AC switch first in the ON position and then OFF, measure the current between a known erath ground metal water pipe, conduit, etc.
The current measured should not exceed 0. Reverse the power-plug prongs in the AC outlet and repeat the test. X-ray Limits : The picture tube is designed to prohibit X-ray emissions. To ensure continued X-ray protection, replace the picture tube only with one that is the same type as the original.
Connect one lead of the ohmmeter to an AC prong. Connect the other lead to the coaxial connector. Heed the high voltage limits. Some semiconductor "solid state" devices are easily damaged by static electricity. Such components are called Electrostatically Sensitive Devices ESDs ; examples include integrated circuits and some field-effect transistors.
The following techniques will reduce the occurrence of component damage caused by static electricity. Immediately before handling any semiconductor components or assemblies, drain the electrostatic charge from your body by touching a known earth ground. Alternatively, wear a discharging Wrist-strap device. Be sure to remove it prior to applying power--this is an electric shock precaution. Precautions Toshiba High voltage is maintained within specified limits by close-tolerance, safety-related components and adjustments.
If the high voltage exceeds the specified limits, check each of the special components. Design Alteration Warning : Never alter or add to the mechanical or electrical design of this unit. Example : Do not add auxiliary audio or video connectors. Such alterations might create a safety hazard. Also, any design changes or additions will void the manufacturer's warranty.
If an isolation transformer is not used, these units may be safely serviced only if the AC power plug is inserted so that the chassis is connected to the ground side of the AC source. To confirm that the AC power plug is inserted correctly, do the following : Using an AC voltmeter, measure the voltage between the chassis and a known earth ground.
If the reading is greater than 1. Re-measure the voltage between the chassis and ground. Some TV chassis are designed to operate with 85 volts AC between chassis and ground, regardless of the AC plug polarity. These units can be safely serviced only if an isolation transformer inserted between the receiver and the power source. Do not apply AC power to the unit or any of its assemblies unless all solid-state heat sinks are correctly installed.
Never operate this unit immediately after moving it from a cold location to a warm location. When the VCR is exposed to such a change in temperature, moisture may condense on the cylinder inside, one of its most crucial internal parts.
To prevent the VCR from possible damage, do not use the unit for at least 2 hours when there is an extreme or sudden change in temperature. This set has been designed and manufactured to assure personal safety. Improper use can result in electric shock or fire hazard. The safeguards incorporated in this unit will protect you if you observe the following procedures for installation, use and servicing.
This unit is fully transistorized and does not contain any parts that can be repaired by the user. This product should be operated only from the type of power source indicated on the marking label.
If you are not sure of the type of power supply to your home, consult your product dealer or local power company. For products intended to operate from battery power, or other sources, refer to the operating instructions. This product may be equipped with a polarized alternating current line plug a plug having one blade wider than the other. This plug will fit into the power outlet only one way. This is a safety feature. If you are unable to insert the plug fully into the outlet, try reversing the plug.
If the plug should still fail to fit, contact your electrician to replace your obsolete outlet. Do not defeat the safety purpose of the polarized plug. Slots and openings in the cabinet are provided for ventilation and to ensure reliable operation of the product and to protect it from overheating, and these openings must not be blocked or covered.
The openings should never be blocked by placing the product on a bed, sofa, rug or other similar surface. The product should be situated away from heat sources such as radiators, heat registers, stoves, or other products including amplifiers that produce heat.
Do not use this product near water - for example, near a bath tub, wash bowl, kitchen sink, or laundry tub; in a wet basement; or near a swimming pool and the like. Unplug this product from the wall outlet before cleaning.
Do not use liquid cleaners or aerosol cleaners. Use a damp cloth for cleaning. Power-supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords at plugs, convenience receptacles, and the point where they exit from the product.
Do not overload wall outlets; extension cords, or integral convenience recep- tacles as this can result in a risk of fire or electric shock. If an outside antenna or cable system is connected to the product, be sure the antenna or cable system is grounded so as to provide some protection against voltage surges and built-up static charges.
An outside antenna system should not be located in the vicinity of overhead power lines or other electric light or power circuits, or where it can fall into such power lines or circuits.
When installing an outside antenna system, extreme care should be taken to keep from touching such power lines or circuits as contact with them might be fatal. For added protection for this product during storm, or when it is left unattended and unused for long periods of time, unplug it from the wall outlet and disconnect the antenna or cable system.
This will prevent damage to the product due to lightning and power-line surges. Never push objects of any kind into this product through openings as they may touch dangerous voltage points or short-out parts that could result in a fire or electric shock. Never spill liquid of any kind on the product. Do not use attachments not recommended by the product manufacturer as they may cause hazards. Do not place this product on an unstable cart, stand, tripod, bracket, or table.
The product may fall, causing serious injury to a child or adult, and serious damage to the product. Use only with a cart, stand, tripod, bracket, or table recommended by the manufacturer, or sold with the product.
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