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Discusses general precautions and practices for servicing electronic equipment.
Outlines critical safety measures, including handling high voltage and leakage current checks.
Explains the use and properties of lead-free solder and its handling precautions.
Recommends specific types and sizes of lead-free solder wire for repair work.
Provides guidance on identifying PCBs that use lead-free solder.
Provides a summary of the key features and specifications of the GP41 chassis.
Lists key voltage measurements at specific test points for diagnosis.
Presents detailed voltage measurements for various components across different models.
Illustrates the internal functional blocks and interconnections of the main IC.
Details the function and type of each pin on the IC601 integrated circuit.
Shows the overall block diagram of the GP41 television chassis.
Offers practical tips and procedures for servicing the E-board.
Explains how to enter and operate the TV's service modes for adjustments.
Describes the procedure for accessing and editing the TV's memory map data.
Details the procedure for adjusting the colour purity on the CRT display.
Outlines the steps for aligning the red, green, and blue electron beams for accurate picture display.
Describes the process for adjusting the Vertical and Horizontal Position (VRS) of the CRT display.
Covers RF AGC, VIF levels, PAL/NTSC signals, and protection circuit checks.
Includes focus, purity, sub-brightness, sub-contrast, and white balance calibration for the CRT.
Covers anode/heater voltage, white quality, and CRT cut-off voltage adjustments.
Details deflection adjustments for 50Hz operation using Service Mode 1.
Details deflection adjustments for 60Hz operation using Service Mode 3.
Provides the circuit schematic for the L board of the TV.
Provides the circuit schematic for the G board of the TV.
Provides the circuit schematic for the A board of the TV.
Displays recorded oscilloscope waveforms for various pins of IC601.
Shows oscilloscope waveforms for IC451 and IC801, aiding in troubleshooting.
Displays oscilloscope waveforms for transistors Q501 and Q551.
Lists all replaceable mechanical components with their part numbers.
Lists all replaceable electrical components for the TC-21FX30LA/LP models.
Lists all replaceable electrical components for the TC-29FX30LA/LP models.
General