This comprehensive service manual provides detailed information and instructions for servicing Panasonic Colour TVs models TX-28LK1P and TX-25LK1P, featuring the Z8 chassis. The manual covers a wide range of topics essential for technicians and repair professionals. It begins with crucial safety precautions to ensure safe handling during service procedures. Next, it provides helpful service hints and tips, offering practical guidance for efficient troubleshooting and repair. The manual delves into the adjustment procedure and factory settings, allowing technicians to accurately calibrate and configure the television to factory specifications. Furthermore, it includes a waveform pattern table, which aids in analyzing signal waveforms and identifying potential issues. Alignment settings are meticulously detailed, enabling precise adjustments for optimal picture quality. Block diagrams provide a clear visual representation of the television's circuitry, simplifying understanding of signal flow and component interactions. The manual concludes with a parts location guide, aiding in identifying and locating specific components during repair or replacement.