AOC P/N : 41A50-144 service manual End

Page 21

III.ALL SCREEN HAS INTERFERENCES OR NOISE, CAN’T BE FIXED BY AUTO KEY

**NOTE: There is so many kind of interferences, 1). One is cause by some VGA-CARD that not meet VESA spec or power grounding too bad that influence our circuit

2).other is cause by external interferences, move the monitor far from electronic equipment.( rarely happened)

Use DOT-pattern, or win98/99 shut-down

 

OK

mode pattern, press “AUTO” key, was the

 

interferences disappear ??

 

 

 

 

 

NG, interferences still exist

 

 

 

OK

Adjust “FOCUS” step by step, until the

 

 

 

horizontal interferences disappear

 

 

 

 

 

END

END

NG

Does your signal-cable have an additional cable for extension ??

Yes, has extension

Put away the additional cable

May be the additional cable grounding is not quite well

NO additional extension cable

 

 

NO, all mode

Does your noise only exist in one mode only?

 

 

 

Change the Signal-cable to new-one or

(ex: only at 1280x1024 @ 75 Hz, other is normal)

 

 

 

 

Try other brand VGA-CARD

 

 

 

 

 

 

(make sure just only that brand VGA-

 

 

 

CARD has this problem ,contact RD-

 

 

Yes, only happened on one mode

 

taipei)

 

 

 

 

That was cause by you VGA-CARD setting, your VGA

 

 

 

card timing backporch/frontporch exceed vesa timing too

 

 

 

far, for some new AGP-VGA-CARD such situation

 

 

 

always happened

 

 

 

So in your control-panel icon ,select monitor ,setting ,

 

 

 

advance ,screen-adjust,at

 

 

 

Size icon, increase step by step slowly, press “”AUTO”

 

 

 

key every step you increase the SIZE . repeat the

 

 

 

procedure( increase/decrease SIZE one-step and press

 

 

 

AUTO) until the interferences disappear, press “APPLY”

 

 

 

to save in your VGA

 

 

 

 

 

 

 

20

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Contents Spectrum Series SEP Table of Contents Specifications for LCD Monitor General specificationsLCD-PANEL Interface Connectors Monitor Block DiagramLCD Monitor Description AC-IN AdapterAssembly Precaution Precautions and NoticesOperating Precautions Storage PrecautionsPIN no Description RED Operating InstructionsAdjustment Adjustment Conditions and PrecautionsAdjustment 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 chartPANEL-POWER Circuit U200-DATA OutputMainboard 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 ZoomDownscaling Destination Stand AloneSource Stand Alone Clock Recovery Circuit Functional DescriptionOverall 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 MeasurementIRQ Controller Data PathIRQ-Generation Conditions IRQ Event Remark Scaling Filter TFT Panel Interface Timing SpecificationGamma Table RGB OffsetPCLKB*4 Pclk *1Vsync width and display position in TFT Horizontal size 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 CommunicationGmZAN1 Serial Channel Specification Parameter Min Typ Max Multi-Function Bus MFBOn-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 BoardPower System and Consumption Current Adapter ModuleInverter 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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