AOC P/N : 41A50-144 service manual Keyboard Block check

Models: P/N : 41A50-144

1 82
Download 82 pages 57.45 Kb
Page 19
Image 19

KEYBOARD BLOCK check

Check U302 MCU pin 43,42,41,40,39 at High state(5V)? without press any key

OK

Press power key and check U302 pin 43 = low (0V) ?

OK

Check U302 pin 38 (LED green) will have transition from hi to low or low to hi when we press the power key??

NG, MCU no response

Check U302 pin 20= 20MHz ? and pin 44 (VDD)=5V ? and pin 10 (reset)=0V ? at normal condition

NG

NG

OK

NG

Mechanical was stuck, Check !

Replace Tact-switch SW105 at keyboard if still no work replace U302 MCU at main-board and check MCU relative reset circuit, and crystal

If still no Led green indicator, check Q102, R106 & LED at keyboard !! cold solder or bad

If one of this item was NG, check the relative circuit

OK

Without press key and change mode, Check U302 pin 16,17(sda,scl)= hi 5V ? or keep transition ?

OK, no keep transition

Replace U302 MCU

Keep transition, that means eeprom no response

NG

Check U300 eeprom 24LC04 relative circuit, check U300 pin 7 = low?

NG

 

OK

 

 

 

Check JP202 is

 

Check U300 pin 8

connect ?

 

(vdd)= 5V, and check

 

 

R300,R301 cold solder

 

Replace eeprom

18

Page 19
Image 19
AOC P/N : 41A50-144 service manual Keyboard Block check

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.