Manual

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COLOR TV SERVICE MANUAL
CHASSIS : CW62A

MODEL : 29FB5RL/RLX MODEL : 29FB5RL/RLX-ZG
CAUTION
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CONTENTS

Contents ..........................................................2 .........................................................Safety Precautions............................................... ...............................................3 Control Descriptions............................................. .............................................4 Specifications.................................................... ....................................................7 A djustment Instructions.........................................8 ........................................ Trouble Shooting ................................................ ................................................14 Printed circuit board.............................................18 ............................................ Block Diagram ...................................................20.................................................. Exploded Vi .................................................. ew ..................................................22 Exploded Vi Parts List .......................................23 ew ...................................... Replacement Parts List .........................................24 ........................................ S VC.Sheet......................................................... .........................................................

SAFETY PRECAUTIONS
I M P O RTANT SAFETY NOTICE
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the Schematic Diagram and Replacement Parts List. It is essential that these special safety parts should be replaced with the same components asrecommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer.

General Guidance
An isolation Transformer should always be used during the servicing of a receiver whose chassis is not isolated from the AC power line. Use a transformer of adequate power rating as this protects the technician from accidentsresulting in personal injury from electrical shocks. It will also protect the receiver and it’s components from being damaged by accidental shorts of the circuitry that may be inadvertently introduced during the service operation. If any fuse (or Fusible Resistor) in this TV receiver is blown, replace it with the specified. When replacing a high wattage resistor (Oxide Metal Film Resistor, over 1W),keep the resistor 10mm away from PCB. Keep wires away from high voltage or high temperature parts. Due to high vacuum and large surface area of picture tube, extreme care should be used in handling the Picture Tube. Do not lift the Picture tube by it’s Neck.

Before returning the receiver to the customer,
always perform an AC leakage current check on the exposed metallic parts of the cabinet, suchas antennas, terminals, etc., to be sure the set is safe to operate without damage of electrical shock.

Leakage Current Cold Check(Antenna Cold Check)
With the instrument AC plug removed from AC source, connect an electrical jumper across the two AC plug prongs. Place the AC switch in the on position, connect one lead of ohm-meter to the AC plug prongs tied together and touch other ohm-meterlead in turn to each exposed metallic parts such as antenna terminals, phone jacks, etc. If the exposed metallic part has a return path to the chassis, the measured resistance should be between 1M‰ and 5.2M‰. When the exposed metal has no return path to the chassis the reading must be infinite. An other abnormality exists that must be corrected before the receiver is returned to the customer....