AOC P/N : 41A50-144 service manual AUDIO-MODULE Trouble shooting chart, No Voice Output

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6 D). AUDIO-MODULE Trouble shooting chart

I.) NO VOICE OUTPUT

Plug-out the DC power , make sure the monitor is in OFF status .

Use OHM-METER measure U1 pin 2, 4 (channel-A ) is speaker well connected? Measure U1 pin 10,12 ( channel B) is speaker well connected ?

]

YES

Plug-in the DC power, set the monitor

ON status .

Check U1 pin 1 = VCC 12V

YES

Check U1 is work properly?

Check U1 pin 5 standby-bias voltage around 4 V ?

YES

Check U1 pin 9 volume-bias around 1 V ?

NG

Check J1,J2 is well connected? Measured J2 pin 4,5 & 2,3 is well connected ?

YES

Check is speaker open circuit ?

NG

Check R10,R11 & J5, S1 is open circuit?

NG

Check R4 is open circuit?

NG

Check R7 , VR1

YES

Check Audio cable and J4 is well connected

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Contents Spectrum Series SEP Table of Contents General specifications Specifications for LCD MonitorLCD-PANEL Interface Connectors Monitor Block DiagramLCD Monitor Description AC-IN AdapterAssembly Precaution Precautions and NoticesOperating Precautions Storage PrecautionsPIN no Description RED Operating InstructionsAdjustment Conditions and Precautions AdjustmentAdjustment Method Adjust 6500 color-temperature Front Panel Control Knobs OSD-INDEX Explanation CIRCUIT-DESCRIPTIONInput not Support CHI-MEI Panel M170E1MODULE-TPYE Component SIMPLE-INTRODUCTION about LM700 chipsetPanel Software Flow Chart Power-On Subrotine ChartSET factory mode flag Clear factory mode flagII. Main Subrotine Loop No Screen Appear Interface-Board Trouble-Shooting chartU200-DATA Output PANEL-POWER CircuitMainboard Check Oscillator Block as above Keyboard Block check POWER-BLOCK check END Panel Luminance WAS Down There is an interferences in DOS ModeCorporation Inverter -MODULE Spec &Trouble Shooting ChartFunction Load Circuit M P O C O R P O R a T I O N Trouble Shooting of CHI-MEI Inverter DIVTL0037-D42 Part List Part Part Number QTY Description Supplier Remark Name Trouble Shooting Hight Voltage Protection Enbale Abnormality Transformer Abnormality Check U101 PIN4NO Freq ~70KHZ Part number 80AL17-1-CH Black, 80AL17-2-CH WhitePage Reference Part Quantity Cat.NO IV. Adapter BOM List Part no AL15-2-LIPCB PCB for CH-1205 Revd PCS For Front Heatsink No Voice Output AUDIO-MODULE Trouble shooting chartII. Sound Distortion Audio BOMGMZAN1 Analog-to-Digital Converter Pin DescriptionPIN # Name DescriptionHost Interface HIF / External On-Screen Display Clock Recovery / Time Base Conversion PIN # TFT Panel InterfaceName Description 2pxl/clk 1pxl/clk TFTTest Pins Typical Stand-alone Configuration System-level Block DiagramNative Operating ModesSlow Dclk ZoomDestination Stand Alone DownscalingSource Stand Alone Functional Description Clock Recovery CircuitOverall Architecture Clock Recovery Circuit Sampling Phase Adjustment Clock Recovery CharacteristicsSource Timing Generator Minimum Typical MaximumAnalog-to-Digital Converter 2.3.1 Pin Connection ADC CharacteristicsPin Connection for RGB Input with Hsync/Vsync Pin Connection for RGB Input with Composite SyncDisplay Mode Support Sync. Signal SupportInput Timing Measurement Source Timing MeasurementData Path IRQ ControllerIRQ-Generation Conditions IRQ Event Remark Scaling Filter TFT Panel Interface Timing SpecificationGamma Table RGB OffsetPCLKB*4 Pclk *1Horizontal size in TFT Vsync width and display position in TFTHsync width in TFT One pixel per clock mode in TFT Power ManagerState 1 Power On State 0 Power OffState 2 Panel Drive Enabled State 3 Panel Fully ActiveHost Interface Panel Interface Drive StrengthPanel Interface Pad Drive Strength Value 4 bits Drive Strength in mASerial Communication Protocol Timing Diagram of the gmZAN1 Serial CommunicationMulti-Function Bus MFB GmZAN1 Serial Channel Specification Parameter Min Typ MaxOn-Screen Display Control On-Chip OSD Controller OSD Color MapTclk Input Tclk SpecificationDC Electrical Characteristic Parameter Min Typ Max Electrical CharacteristicsAbsolute Ratings Parameter Min Typ Max PvddMechanical of Cabinet Front DIS-ASSEMBLY T780KMGHBAA0A Specification Parts List of CabinetParts List of Cabinet continue Location CBPC780GM Specification Parts List of Conversion BoardLocation AI780GM Specification Location AI780GM SMD EC 22UF 16V 85C Csize KEPC780EK Parts List of KEY PC BoardParts List of Audio Board Parts List of DC-POWER BoardAdapter Module Power System and Consumption CurrentInverter Module PCB Layout TOP-LEVEL Flow Schematic DiagramII. GMZAN1 Block Lvds Block MCU Block Power Block KBL405G Adapter Schematic CH-1205C1,C2,C4 --- 1uF/50V

P/N : 41A50-144 specifications

The AOC P/N: 41A50-144 is a versatile and high-performing monitor that caters to both professional and casual users. With its sleek design and array of features, this model embodies the epitome of modern display technology.

One of the standout characteristics of the AOC 41A50-144 is its impressive display resolution. Equipped with a 1920 x 1080 pixels Full HD panel, it delivers sharp, vibrant images and ensures that text and graphics appear crisp and clear. The monitor boasts a wide viewing angle that allows for consistent color reproduction, making it perfect for collaborative workspaces or multi-screen setups.

In terms of refresh rates, the AOC 41A50-144 supports a 144Hz refresh rate, catering exceptionally well to gamers and media consumers who seek responsive performance. This high refresh rate reduces motion blur, providing a smoother experience during fast-paced gaming sessions or action-packed videos. Coupled with a 1ms response time, this monitor minimizes ghosting and lag, delivering a seamless visual experience.

The monitor utilizes advanced technologies to enhance the viewing experience further. One notable feature is AMD FreeSync support, which synchronizes the monitor's refresh rate with the GPU's frame rate, effectively eliminating screen tearing and stuttering during gameplay. This leads to a more immersive experience and ultimately gives gamers a competitive edge.

Another critical aspect of the AOC 41A50-144 is its connectivity options. It comes with multiple ports including HDMI, DisplayPort, and VGA, making it compatible with a wide range of devices. This versatility ensures that users can easily connect their computers, gaming consoles, or multimedia players without any hassle.

The AOC 41A50-144 also places importance on user comfort. It incorporates features like flicker-free technology and a low blue light mode to reduce eye strain during extended use. This focus on ergonomics allows for a more enjoyable viewing experience, regardless of the tasks at hand.

Overall, the AOC P/N: 41A50-144 combines high-performance, advanced technologies, and user-centered design. Whether for gaming, professional tasks, or entertainment purposes, this monitor stands out as a reliable and efficient solution that meets the demands of various users. Its features and specifications make it a compelling choice for anyone looking to enhance their display setup.
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