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SERVICE
Hospitality Displays
HG40NJ470MF
LED TV
Project
: HJ470
Chassis : HNW80
Model
: HG32NJ470NF
HG40NJ470MF
HG43NJ470MF
HG49NJ470MF
Manual
1. Precautions
2. Product specifications
3. Disassembly and Reassembly
4. Troubleshooting
5. Wiring Diagram
Contents

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Table of Contents
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Summarization of Contents

Disassembly and Reassembly Procedures
Step-by-Step Disassembly Guide
Comprehensive instructions for disassembling the LED TV, covering various models and components.
Safety and Servicing Precautions
Safety Precautions
Safety, servicing, and ESD precautions to prevent damage and hazards during operation and repair.
Servicing Precautions
General guidelines and warnings for technicians servicing the unit, emphasizing safety.
Static Electricity Precautions
Techniques to reduce component damage caused by static electricity (ESD) during handling.
Installation Precautions
Safety measures and guidelines for proper product installation and setup.
Product Specifications and Information
Product Information and Dimensions
Details on model, dimensions, weight, and color for various TV sizes.
Detailed Product Specifications
Comprehensive technical specifications for display, audio, video, and connectivity features.
Included Accessories
List of standard accessories included with the LED TV, along with their product codes.
Troubleshooting and Diagnostics
Initial Operation Checks
Checklist for verifying initial operation and common pre-diagnostic steps.
Fault Symptom Diagnosis
Step-by-step procedures for diagnosing and resolving specific TV faults.
Factory Mode Adjustments
Instructions for entering and navigating the service/factory mode for adjustments.
White Balance Calibration
Procedures for calibrating and adjusting the white balance settings for optimal picture quality.
Software Update Procedure
Guide on how to update the TV's software using a USB device.
Wiring Diagram and Connector Functions
Internal Wiring Diagrams
Schematic diagrams illustrating internal connections between major boards and components.
Main Board Connector Details
Detailed pin maps and identification of connectors on the main board for various models.
Key Connector Functions
Explanation of the purpose and signal flow for critical connectors.

Table of Contents