Summary of Contents for AMTC NS-50D510NA19
- Page 1 LCD TV Service Manual (All rights are reserved by Shenzhen MTC Co., Ltd. Unauthorized copying and publicity are illegal.) Model: NS-50D510NA19 Core: MS3553.PC906 integrated/outsourcing CVT For internal use only!
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Page 2: Table Of Contents
Contents I. Product Introduction..........................2 1. Appearance............................2 2. Technical Parameters and Function Features..................3 II. Core Scheme Overview..........................4 III. Principle and Repair of Core Board....................... 4 (I) Principle of Core.............................4 1. Power Supply............................4 2. Control Part............................5 3. Remote Control /Button Circuit......................6 4. -
Page 3: Product Introduction
LCD TV Service Manual I. Product Introduction 1. Appearance (1) Schematic diagram: Front view (including control buttons): Rear view (including terminal diagram, rear nameplate): (2) Remote control MSDV3941-MG10-01 (for BBY) -
Page 4: Technical Parameters And Function Features
2. Technical Parameters and Function Features: (1) Technical Parameters PANEL Type TFT-LCD/LED Resolution Max. 1920X1080 Interface Single/ Double LVDS Receiving range Air:CH2~CH69 Cable:CH1~CH135 Input Impedance 75Ω Video System NTSC Sound System BTSC/A2 Receiving range CH2~CH69 Input Impedance 75Ω Modulation ATSC:8VSB QAM:64QAM, 256QAM Color system PAL/NTSC/SECAM Video Level... -
Page 5: Core Scheme Overview
II. Core Scheme Overview MS3553.PC906 is an integration board of power supply, LED driver, TV and TCON board. It can receive the AIR/CABLE digital television signals. It is suitable for the market in North America. III. Principle and Repair of Core Board (I) Principle of Core 1. -
Page 6: Control Part
+3.3V_STB is powered by LDO1117-3.3V, and is converted by +5V_STB to supply power to the main chip and tuner. 2. Control Part... -
Page 7: Remote Control /Button Circuit
3. Remote Control /Button Circuit 4. Interface Part Above is serial port interfaces used for debugging. -
Page 8: Switching Mute Circuit
5. Switching Mute Circuit 6. Power Amplifier Circuit 3553 uses TPA3138D2 Tip: If the power amplifier malfunctions and there is no sound in the speaker, first make sure that the power amplifier is not muted, and there is no false welding in the cable and socket. Then, analyze whether other hardware has problems, including 12V power supply for power amplifier, left and right output and whether power amplifier IC works normally. -
Page 9: Tuner Rf Part
7. Tuner RF Part The 3553 uses Rafael's R842 silicon tuner, as shown below: 8. Reset Circuit... -
Page 10: (Ii) Introduction Of Core Board
(II) Introduction of Core Board Introduction of physical interfaces of core board Headphone Tuner Fiber AV socket socket socket IR/KEY socket HDMI socket Speaker cable socket HDMI socket LVDS socket HDMI socket USB socket AC socket Backlight socket (III) Core troubleshooting flowchart and repair method For the core board, first check whether the material is properly inserted, whether there is any welding problem, and then check if the board has hardware or software problems. - Page 11 Boot failure troubleshooting 1. First check whether the failure is on the core board circuit or on the power board circuit. After turning on the power, check if the 12V_STB test point on the decoder board is +12V; if not or the voltage output is abnormal (significantly different from 12V), the power board circuit output has problem.
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Page 12: Three-In-One Board Circuit Diagram
IV. Three-in-one Board Circuit Diagram (I) Schematic Diagram of Three-in-one Board Double click to open the following PDF document TP.MS3553.PC906维 修原理图.pdf...
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