Panasonic Generation Plasma Display Television manual SOS Circuit Overview

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SOS Circuit Overview

6 Blinks SOS: 6 blinks of the power LED may also be obtained from pin 3 of IC9003, the

DRV_RESET input. The D board provides the 5V source needed to power the C boards. On the C2 board, the 5V is routed back to the D board via connector C20/C10, C11/D31 causing pin 3 of IC9003 to be high. If 5V is not routed back to the D board, pin 3 of IC9003 goes low. The set goes into shutdown mode and the power LED emits 6 blinks.

7 Blinks SOS: Pin 93 of the MPU IC9003 monitors the status of the SC, SU, SD board. During normal operation, the photo-coupler PC6480 outputs a low to pin 93. If the SC, SU, or SD board becomes defective, a high is provided to pin 93. As a result, the unit shuts down and the power LED blinks 7 times.

8 Blinks SOS: Pin 91 of the MPU IC9003 monitors the status of the SS board. During normal operation, pin 8 of connector SS23 outputs a low to pin 91. If the SS board becomes defective, a high is provided to pin 91. As a result, the unit shuts down and the power LED blinks 8 times.

10 Blinks SOS: The SUB5V and DT9V sources created on the A board are monitored by IC1100. If they are not present at pin 30 and 34, the MPU shuts down the unit. The power LED blinks 10 times.

10 Blinks SOS: The F_STB_15V of the P board, as well as the derived SUB5V and DT9V sources are monitored on the A board for excessive current. If a short circuit is developed in one of the supplied lines, pin 114 of IC1100 receives a high. The SUB5V and DT9V lines are also monitored for excessive voltage. When an over-voltage condition is detected, a high is also output to pin 114 of IC1100. The DT9V is provided to a DC/DC converter to create the BT30V for the tuner. If the BT30V becomes excessive, a high is output to pin 114 of IC1100. A high at pin 114 of IC1100 causes the unit to shutdown and the power LED to blink 10 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 P25 STB5VSTB5V 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 Unplug the TV Troubleshooting No Power/Dead Unit PartTV 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 Pulse Panel Drive TH-42PX75UPanel Drive TH-42PX75U Audio Process Block Diagram Audio Process Block Diagram Page Adjustments Page Self-Check Function Remote control for more than 3 secondsHow to Reset the Unit Self-Check Menu Check point Serviceman Mode Key command Serviceman Mode Menu and NavigationAdjustment 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.

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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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