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THOMSON 32E90NH22 User Manual

THOMSON 32E90NH22
89 pages
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Service Manual
CHASSIS MT35
Contents
1. Caution…………………………………......….…………………...……………2
2. Product Specification………………………..……………………...…….…….6
3. Test and Alignment………………….………………………………...………..9
4. Main IC Brief Instruction
MT5335PU……………………………………....................................................16
MT5133……………………………………........................................................22
MT8295…………………............................................................................…..24
WL6702F………………………………………....….............…..........…………..25
WM8501..........................................................................................................30
SiL9185A.........................................................................................................33
RT8110............................................................................................................47
MP1411...........................................................................................................50
TDA7266.........................................................................................................54
AO4459...........................................................................................................55
13N03LT..........................................................................................................56
5 Block Diagram………………………………….…….. .......................……..57
6 Schematic Diagram…………………………..............................……….58
7 Exploded View
26E90……………………………………………..……….…..............…….…..…86
26E92……………………………………… ...... …………......……................….87
32E90…………………….………………..……….....……..….…..............……..88
32E92..............................................................................................................89

Table of Contents

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THOMSON 32E90NH22 Specifications

General IconGeneral
Screen Size32 inches
Display TypeLCD
HDMI Ports2
USB Ports1
Smart TVNo
Aspect Ratio16:9
Refresh Rate60Hz
Built-in Wi-FiNo
Operating SystemNot Applicable
Display TechnologyLED
Resolution StandardHD
Resolution1366 x 768

Summary

Safety Precautions

Electrical Shock Hazards

Details risks of electric shock and need for qualified personnel.

Appliance Hazard Warnings

Warns against exposing the appliance to rain or moisture.

Safety Instructions

General Safety Guidelines

Instructions for reading, retaining, heeding, and following manual guidance.

Personal Safety Guidelines

Instructions for safe operation, handling, placement, and cleaning of the TV.

Set Protection and Placement

Electrical Safety and Grounding

Instructions for antenna grounding, surge protection, and connection safety.

Operating Your Television

Troubleshooting and Abnormal Operation

Steps for addressing operational issues, damage, or unusual sounds.

Service and Modification Guidelines

Precautions regarding attachments, replacement parts, and safety checks.

Test and Alignment Procedures

Electrical Assembly Alignment

Steps for electrical assembly, including preconditions and DC/DC checks.

Functional Test Procedures

Guidelines for functional testing using various input sources and signals.

DDC and EDID Testing

Procedures for testing DDC/EDID data structure and compliance.

High Voltage and Insulation Resistance Tests

Requirements for High Pot and Insulating Resistance tests for safety compliance.

Balance Adjustment and Color Calibration

Procedures for adjusting balance source, tone, and auto color settings.

Serial Command Protocol

Details on the serial protocol for controlling MTK µchip via USB or COM.

DC/DC Voltage Checks

Specifies voltage checks for various components like U811, U801, U802, etc.

ADC Calibration Process

Instructions for calibrating ADC for VGA and CMP inputs using test signals.

HDCP Compliance Testing

Steps to verify HDCP key implementation and compliance.

Factory Menu Definitions

Details on system settings within the factory menu, like Factory Key and Burning Mode.

Sound Volume Curve Settings

Details on mapping volume values to MCU register settings.

Warm/Cool Relative Matrix Offsets

Information on relative matrix offsets for warm and cool color tuning.

Final Assembly Alignment Steps

Procedures for entering factory menu, P mode, and white balance adjustment.

MCU Software Download Procedure

Steps for updating MCU software using WT_MCU_ISP tool.

Flash Software Download Procedure

Steps for updating flash software using MTKTOOL.

MT5335PU Datasheet

System Block Diagram

Shows the overall system architecture, including connections to panel, tuner, flash, and DRAM.

Key Features Overview

Lists the main features of the MT5335PU, including its integration and capabilities.

MT5133 Datasheet

General Description and Introduction

Overview of the MT5133 COFDM demodulator for DVB-T receivers.

Block Diagram

Illustrates the internal structure of the MT5133, showing AGC, FEC, and processing blocks.

MT8295 Datasheet

Introduction and Application Overview

Covers the MT8295 as a companion chip for CI/CIV2 functions and its DTV system use.

WT6702F Datasheet

Functional Block Diagram

Illustrates the internal architecture of the Turbo 8031 MCU and its peripherals.

Pin Assignment and Package Types

Details pin configurations and package options like SOP and SSOP.

Detailed Pin Descriptions

Explains the function of each pin, including I/O types and special functions.

WM8501 DAC Datasheet

SiI9185A HDMI Switch Datasheet

General Description

Overview of the 3:1 HDMI 1.3 switch, its compliance, and benefits.

Key Features

Lists the primary functionalities like HDMI inputs, TMDS cores, CEC, and EDID support.

CEC API Control and Calibration

Explains CEC API control, calibration procedure, and timing requirements.

RT8110 DC/DC Converter Datasheet

MP1411 Step-Down Converter Datasheet

Operational Description

Explains the operation of the MP1411 current mode regulator and its control loops.

TDA7266 Amplifier Datasheet

AO4459 MOSFET Datasheet

General Description and Features

Overview of the P-Channel MOSFET, its technology, and key characteristics.

PHKD13N03LT FET Datasheet

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