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CT-32SX31E Dataheets PDF



Part Number CT-32SX31E
Manufacturers Panasonic
Logo Panasonic
Description (CT-3xSX31x) Color TV
Datasheet CT-32SX31E DatasheetCT-32SX31E Datasheet (PDF)

ORDER NO. MTNC010524C1 B5 Service Manual Color Television Main Manual (NA8ML) Panasonic Models This Service manual is issued as a service guide for the models of the NA8ML family listed above. Included in this manual are a set of schematic, block diagrams, functional descriptions, alignment procedures, disassembly procedures and a complete parts list. w w .D w t a S a e h CT-32SX31E CT-32SX31UE CT-32SX31CE CT-36SX31E CT-36SX31UE CT-36SX31CE t e U 4 .c m o Chassis BP371 BP371 BP371 B.

  CT-32SX31E   CT-32SX31E


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ORDER NO. MTNC010524C1 B5 Service Manual Color Television Main Manual (NA8ML) Panasonic Models This Service manual is issued as a service guide for the models of the NA8ML family listed above. Included in this manual are a set of schematic, block diagrams, functional descriptions, alignment procedures, disassembly procedures and a complete parts list. w w .D w t a S a e h CT-32SX31E CT-32SX31UE CT-32SX31CE CT-36SX31E CT-36SX31UE CT-36SX31CE t e U 4 .c m o Chassis BP371 BP371 BP371 BP372 BP372 BP372 “WARNING! This Service Manual is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the product or products dealt with in this Service Manual by anyone else could result in serious injury or death.” The service technician is required to read and follow the “ Safety Precautions” and “Important Safety Notice” in this Main Manual. Copyright 2001 by Matsushita Electric Corporation of America. All rights reserved. Unauthorized copying and distribution is a violation of law. ® w w w .D a S a t e e h U 4 t m o .c Important Safety Notice Special components are used in this television set which are important for safety. These parts are identified on the schematic diagram by the symbol and printed in BOLD TYPE on the replacement part list. It is essential that these critical parts are replaced with the manufacturer’s specified replacement part to prevent X-ray radiation, shock, fire or other hazards. Do not modify the original design without the manufacturer’s permission. Safety Precautions General Guidelines An Isolation Transformer should always be used during the servicing of a receiver whose chassis is not isolated from AC power line. Use a transformer of adequate power rating as this protects the technician from accidents resulting in personal injury from electrical shocks. It will also protect the Receiver from being damaged by accidental shorting that may occur during servicing. When servicing, observe the original lead dress, especially in the high voltage circuit. Replace all damaged parts (also parts that show signs of overheating.) Always Replace Protective Devices, such as fishpaper, isolation resistors and capacitors, and shields after servicing the Receiver. Use only manufacturer’s recommended rating for fuses, circuits breakers, etc. High potentials are present when this Receiver is operating. Operation of the Receiver without the rear cover introduces danger for electrical shock. Servicing should not be performed by anyone who is not thoroughly familiar with the necessary precautions when servicing high-voltage equipment. Extreme care should be practiced when Handling the Picture Tube. Rough handling may cause it to implode due to atmospheric pressure. (14.7 lbs per sq. in.). Do not nick or scratch the glass or subject it to any undue pressure. When handling, use safety goggles and heavy gloves for protection. Discharge the picture tube by shorting the anode to chassis ground (not to the cabinet or to other mounting hardware). When discharging connect cold ground (i.e. dag ground lead) to the anode with a well insulated wire or use a grounding probe. Avoid prolonged exposure at close range to unshielded areas of the picture tube to prevent exposure to Xray radiation. The Test Picture Tube used for servicing the chassis at the bench should incorporate safety glass and magnetic shielding. The safety glass provide shielding for the tube viewing area against X-ray radiation as well as implosion. The magnetic shield limits the X-ray radiation around the bell of the picture tube in addition to the restricting magnetic effects. When using a picture tube test jig for service, ensure that the jig is capable of handling 40kV without causing Xray radiation. Before returning a serviced receiver to the owner, the service technician must thoroughly test the unit to ensure that is completely safe to operate. Do not use a line isolation transformer when testing. metallic part has a return path to the chassis, the reading should be between 240kΩ and 5.2MΩ. If the exposed metallic part does not have a return path to the chassis, the reading should be infinite. Leakage Current Hot Check (Fig. 1) Plug the AC cord directly into the AC outlet. Do not use an isolation transformer during the check. Connect a 1.5kΩ 10 watt resistor in parallel with a 0.15µF capacitor between an exposed metallic part and ground. Use earth ground, for example a water pipe. Using a DVM with a 1000 ohms/volt sensitivity or higher, measure the AC potential across the resistor. Repeat the procedure and measure the voltage present with all other exposed metallic parts. Verify that any potential does not excee.


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