Table of Contents
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SERVICE TRAINING MANUAL
1. Chassis Introduction.............................................................................2
2. Product Specification..........................................................................3
3. Main Board Picture Introduction............................................................5
4.1 Block Diagram.............................................................................7
4.2 Power Supply Flow Diagram..........................................................8
2
C BUS Flow Diagram..................................................................9
5. Key Circuit and Key Test Points and Wave shape Introduction.....................9
6. Alignment Procedure........................................................................29
7. Project ID List.................................................................................43
8. Trouble Shooting..............................................................................44
9. Key Spare Parts List.........................................................................50
10. Main Board Schematic Diagram
10.1 MT5362 GPIO Definition..............................................................51
10.2 Sammary................................................................................................52
10.3 Schematic Diagram...............................................................................53
PWE4210.......................................................................................................74
PWE3210.......................................................................................................75
32FS6646......................................................................................76
40FD6646......................................................................................77
46FS6646......................................................................................78
Chairman of the Compilation Committee ：Shawn Zhang
Member of the Compilation Committee ： Yong Liu, Binhong Chen, Zengxun Shi, Zheng Yang,
Simba Yao, Proton Sun, Welbur Chen, Ivan Zhang
Chief Editor : Paul Su
Executive Editor ：Welbur Chen, Zengxun Shi
CHASSIS MT62S
CONTENTS
1
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Table of Contents
Related Manuals for THOMSON 40FS6646
Summarization of Contents
Main Board Overview
Main Board Sockets and Connectors
Identifies and labels various sockets and connectors on the main board.
Main Board IC Identification
Highlights important ICs and their functions on the main board.
System Flow Diagrams
Block Diagram Overview
Visual representation of the main components and their interconnections.
Power Supply Flow Diagram
Shows the flow and distribution of power supply voltages within the chassis.
I²C Bus Flow Diagram
Depicts the flow of data over the I²C bus between components.
Troubleshooting: Key Circuits and Test Points
Standby Test Points
Identifies specific test points for checking standby power status.
Power On/Off Test Points
Identifies key test points for power on/off sequence verification.
Panel On/Off Test Points
Identifies test points for controlling and monitoring the panel's on/off state.
12V to 5V Power Conversion Tests
Details test points and wave shapes for the 12V to 5V power conversion.
12V to Tuner 5V Tests
Shows test points and wave shapes for 12V to 5V conversion for the tuner.
24V to 12V Power Conversion Tests
Details test points and wave shapes for the 24V to 12V power conversion.
12V to 1V8 Power Conversion Tests
Details test points and wave shapes for 12V to 1.8V power conversion.
AV and Other Voltage Rail Tests
Identifies test points and wave shapes for various AV and DV voltage rails.
Main IC Key Test Points
Shows key test points and wave shapes related to the main IC's power rails.
Startup Sequence Test Points
Identifies test points for monitoring the startup sequence after power application.
T-CON Power Supply Test Points
Identifies power supply test points on the T-CON board.
DDR IC Key Test Points
Details key test points for DDR ICs, including reference voltages.
Tuner Key Test Points
Identifies key test points for the tuner module.
HDMI Input Interface
Details the HDMI input interface and associated components.
Power Amplifier Test Points
Identifies test points for the power amplifier circuit.
AV Out Amplifier Test Points
Identifies test points for the AV output amplifier.
Alignment Procedure
Electrical Assembly Alignment
Covers preconditions and DC/DC checks for electrical assembly.
Functional Test Procedures
Tests all external interfaces and checks picture/sound quality.
ADC Calibration
Details ADC calibration for VGA, CMP, and Scart RGB inputs.
DDC & EDID Test
Tests DDC and EDID data structures for HDMI and VGA interfaces.
Factory Menu Operations
Instructions on accessing and navigating the factory menu for alignment.
White Balance Alignment
Steps for performing white balance alignment for accurate colors.
Feature Settings and System Information
Feature Settings
Describes features like Flesh Tone, Adaptive Luma, Light Sensor, and Adaptive Backlight.
Sound Settings
Lists sound volume settings (VOL_0, VOL_10, etc.).
Version Information and CI+ Updates
Displays version details and guides CI+ credential updates.
Schematic Diagrams
MT5362 GPIO Pin Definitions
Defines the GPIO pins of the MT5362 main IC and their functions.
Schematic Diagram Summary
Summarizes the different parts covered in the schematic diagrams.
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