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Service Manual
This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not
contain warnings or cautions to advise non-technical individuals of potencial dangers in attempting to service a product. Products
powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the
product or products deal within this service information by anyone else could result in serious injury or death.
There are special components used in this equipment which are important for safety. These parts are marked
Schematic Diagrams, Circuit Board Diagrams, Explorer Views and Replacement Parts List. It is essential that these
critical parts should be replaced with manufacturer´s specified parts to prevent shock, fire or other hazards. Do not
modify the original design without permission of manufacturer.
Warning
IMPORTANT SAFETY NOTICE
ORDER No. PCZ1903012CE
REVISION 2
LED TV
TX-49GXF937
TX-49GXN938
TX-49GXT936
TX-49GXX939
LA78 Chassis
in the
© Panasonic Corporation 2019.
Unauthorized copying and
distribution is a violation of law.
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Table of Contents
Related Manuals for Panasonic TX-49GXX939
Summarization of Contents
Safety Precautions
General Guide Lines
Basic servicing rules for safety.
Touch-Current Check
Procedure to measure touch current for user safety.
Service Navigation
Chassis Board Layout
Identification and function of main circuit boards within the TV chassis.
Service Hints
Pedestal Assembly Removal
Step-by-step instructions for detaching the TV stand.
Technical Description
Specification of Keys for Digital Services
Details on security keys required for various digital content protection and services.
USB HDD Recording Information
Information on recording TV programs using a USB hard drive and associated key requirements.
Setting Inspection
Voltage Confirmation
Test points and expected voltage values for key circuits on A-board and P-board.
CS Maintenance Menu
CS Maintenance Menu Access
Procedure to access the service menu for adjustments and checks.
Hotel Mode Functionality
Hotel Mode Access and Purpose
Describes the function of Hotel Mode for restricting features and customizing settings for hotel environments.
Data Copy by USB Memory
USB Data Copy Preparation
Steps to prepare a USB memory stick for data backup or hotel setup.
Self Check Procedures
Accessing Self Check Diagnostics
Instructions to initiate self-check diagnostics for hardware and software status.
TV Error Indication and Testing
Power LED Blinking Codes
Chart correlating power LED blink patterns to specific error conditions and check points.
LCD Panel Test Mode
Procedure to enter test mode for diagnosing LCD panel or main board issues.
Replacement Parts List Information
Part Description Abbreviations
Explains abbreviations used for resistors and capacitors in the parts list.
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