Wednesday, February 18, 2015

HOW TO ENTER SERVICE MODE PANASONIC TX-20LA80F - TX-20LA80FS (POWERS SUPPLY CIRCUIT )

 PANASONIC TX-20LA80F - TX-20LA80FS


SERVICE MODE AND POWERS SUPPLY CIRCUIT 

Adjustment Method
How to enter Service

• Set the Bass to maximum position, set the Treble to minimum position then keep pressing the INDEX button on the remote control and press the down button (-/v) on the TV set, this will place the TV set into the Service Mode 1.
Key Command
• Press the RED / GREEN buttons to step up / down through the functions.
• Press the YELLOW / BLUE buttons to alter the function values, to alter White Rasters use +/- buttons
• Press the OK button after each adjustment has been made to store the required values.
• To exit the Service Mode, press the "N" button.
White Balance Adjustment
Instrument
• Remote Control
• LCD WB meter (Minolta CA-210 or equivalent) Condition
• Switch on the TV Set. Enter Service1. Step down to Highlight line and keep the aging time more than 20 minutes.
Procedure
• After aging time above set White Raster No.12 for Highlight and No.4 for Lowlight Press the OK button to store.
• Put Minolta Sensor to the center of the LCD Panel with 25mm gap between Minolta Sensor and LCD Panel. Adjust "x" and "y" values by changing Red and Blue values.
• Press OK button to store setting.
POWER SUPPLY CIRCUIT
PCB LAYOUT 
CLICK ON THE IMAGES TO ZOOM IN