Panasonic Generation Plasma Display Television manual SOS Circuit Overview

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SOS Circuit Overview

Protection circuits are incorporated in the unit to prevent the failure of a single circuit or component from creating catastrophic damage.

1 Blink SOS: This shutdown operation is usually caused by a lack of communication between the A and the D boards.

1 Blink SOS: This shutdown operation may be caused by the improper connection of a SS board connector to the panel.

2 Blinks SOS: Pin 87 of the MPU IC9003 monitors the 15V line. During normal operation, the transistors Q9053 and Q9054 output a high to pin 87. If the 15V line is missing or shorted, a low is provided to pin 87. As a result, the unit shuts down and the power LED blinks 2 times.

3 Blinks SOS: IC9807 is a 3.3V regulator located on the D board. Its output is monitored by IC9003. If the 3.3V is not present at pin 86, the MPU shuts down the unit. The power LED blinks 3 times.

5 Blinks SOS: Pin 85 of the MPU IC9003 monitors the 5V line. During normal operation, the transistors Q9051 and Q9052 output a high to pin 85. If the 5V line is missing or shorted, a low is provided to pin 85. As a result, the unit shuts down and the power LED blinks 5 times.

6 Blinks SOS: Pin 90 of the MPU IC9003 monitors the status of the SC board. During normal operation, the transistor Q6581 and IC6581 output a low to pin 90. If the SC board becomes defective, a high is provided to pin 90. As a result, the unit shuts down and the power LED blinks 6 times.=

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Contents Panasonic Service and Technology Company Panasonic Service and Technology Company Table of Contents Table of Contents Panasonic Plasma Line-up Models Comparison Models Comparison Models Comparison High Resolution FULL-HD Panel Page Board Layout Page TH-42PX75UBoards Layout & Description TH-42PX75UBoard Layout Pictorial 2006/2007 Signal Process/Switching Circuit Overall Block Diagram Overall Block Diagram Page Power Supply Page Standby Circuit Standby Circuit Standby Circuit Standby Circuit STB5V/STB3.3V Distribution STB5V P25STB5V Main CPU VCC Supply a Board Main CPU VCC Supply a Board TVSUBON/TUNERSUBON TVSUBON/TUNERSUBON Tvsubon Fstbon Tvsubon Fstbon Tvsubon Relay Drive Circuit Tvsubon Relay Drive Circuit PFC Circuit Acfb Active Clamp Full Bridge Switching Circuit Acfb Active Clamp Full Bridge Switching Circuit MAIN/SUB Voltages MAIN/SUB Voltages +15V, DTV9V, SUB5V SOS Detect Circuit +15V, DTV9V, SUB5V SOS Detect Circuit Power On Operation Power On Operation Power-On Power-On Power On Power On Power On Power On Summary P15V/P5V Circuit P15V/P5V Circuit Vsus/Vda Circuit Vsus/Vda Circuit Troubleshooting No Power/Dead Unit Part Unplug the TVTV is plugged into Shutdown Circuits Page SOS Circuit Overview SOS Circuit Overview SOS Circuit Overview SOS Circuit Overview Drvrst SOS Drvrst SOS Location of Q9302 Close-up View of Q9302 Blinks SOS Blinks SOS SOS Drive-reset C Boards Connection Blinks SOS Blinks SOS Signal Processing Page Signal Circuit Overview Signal Circuit Overview Video Process Block Diagram Video Process Block Diagram Board Block Diagram Component Function Panel Drive TH-42PX75U PulsePanel Drive TH-42PX75U Audio Process Block Diagram Audio Process Block Diagram Page Adjustments Page Remote control for more than 3 seconds Self-Check FunctionHow to Reset the Unit Self-Check Menu Check point Serviceman Mode Serviceman Mode Menu and Navigation Key commandAdjustment Sub Menu Internal Test Patterns Driver Setup Adjustment Initialization Pulse Adjustment Quick adjustment after P.C.B. exchange

Generation Plasma Display Television specifications

The Panasonic Generation Plasma Display Television, a remarkable innovation in home entertainment technology, has set the standard for high-quality visual experience since its introduction. Renowned for their stunning display quality, these televisions employ advanced plasma technology to deliver vibrant colors, deep blacks, and exceptional contrast ratios. The screens are designed to produce lifelike images, available in various sizes, catering to both casual viewers and dedicated cinephiles.

One of the standout features of Panasonic’s plasma TVs is their superior color accuracy. With the ability to reproduce a wide color spectrum, these displays bring scenes to life, making colors appear more vivid and true to the original. The Real Black Drive technology enhances the display's ability to produce deeper blacks, resulting in richer image quality and an overall more immersive viewing experience, especially in dark environments.

In addition to impressive visuals, Panasonic also focuses on audio quality. Many models feature integrated sound systems that complement the stunning visuals, providing clear, balanced sound. For users looking for even more audio fidelity, the televisions are compatible with various external sound systems, enhancing the home theater experience.

The Panasonic Generation Plasma televisions are equipped with advanced connectivity options. HDMI ports, USB inputs, and built-in Wi-Fi functionality allow users to connect a wide range of devices, from gaming consoles to streaming set-top boxes, ensuring compatibility with modern technology. With smart TV capabilities, users can access streaming services, browse the internet, and enjoy a multitude of apps from the comfort of their couch.

Furthermore, energy efficiency is a key consideration in Panasonic’s design philosophy. Many models are built with energy-saving features that reduce power consumption without compromising performance, appealing to environmentally conscious consumers.

Durability and reliability are also notable characteristics of Panasonic plasma TVs. Designed for extended use, their robust screens are less prone to image retention, a common concern with plasma technology. With proper care, these televisions can deliver exceptional performance for years.

In summary, the Panasonic Generation Plasma Display Television exemplifies the pinnacle of plasma technology, offering superior imaging, impressive audio capabilities, extensive connectivity, and energy efficiency. This television series remains popular among consumers seeking a premium viewing experience. The fusion of these cutting-edge technologies ensures that every movie, show, or sporting event is enjoyed to its fullest potential, marking Panasonic as a leader in the realm of home entertainment technology.
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