9.2Trouble shooting

9.2.1 Main Board

No display

Measured CN701 pin5/6 = 12 V? Measured CN701 pin 9/10= 5V?

Dell E176FPc

NG

Check main board Power; is there DC level

output? Check U701 pin 2= 3.3V? U702

 

 

pin 2= 1.8V? Is there any shortage or cold

 

solder?

 

 

OK

Disconnected the Signal cable (Loose the Signal cable), Is the screen show Block WRGB color bars?

OK

Connected the Signal cable again, check LED status.

Green

NG

Connected the Signal cable again Check LED status.

Green

 

 

 

 

 

Orange

Check Power switch is in Power-on

 

 

 

 

status, and check if Power switch had

 

 

 

been stuck?

 

 

 

 

 

 

 

 

OK, Keyboard no stuck

 

 

 

Orange

 

 

Replace U401 Scalar IC

Check the Wire-Harness from CN101

OK, Wire tight enough

Check Panel-Power Circuit Block

OK, Panel Power OK

Check U401 Data-output Block

OK, U401 data OK

Replace Inverter board and Check Inverter control relative circuit

Measured RGB (R434, R435, R436,) H/V Input at U401 pin 89,90, Was there have signal?

OK

Measured Crystal X401

OK

Replace U401 (GM2621)

Check Correspondent component short/open (Protection Diode)

NG

Re-do White balance adjust

OK

Note: 1. If replace Main-Board”, Please re-do “DDC-content” programmed & “White-Balance”. 2. If replace “Power Board” only, Please re-doWhite-Balance”.

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Dell E176FPB service manual Trouble shooting, No display, Replace U401 GM2621

E176FPB specifications

The Dell E176FPB is a compact yet feature-rich monitor that caters to a variety of users, from home office setups to educational environments. Designed with practicality in mind, this 17-inch flat-panel LCD display delivers a blend of performance, reliability, and energy efficiency.

One of the primary features of the E176FPB is its high-resolution display, offering a native resolution of 1280 x 1024 pixels. This clarity allows for sharp images and crisp text, making it suitable for various tasks like document editing, web browsing, or even light multimedia use. The monitor utilizes a 5:4 aspect ratio, which, while slightly outdated compared to modern widescreen displays, remains highly functional for traditional office applications.

The E176FPB is equipped with an anti-glare coating that reduces reflections and distractions, providing comfortable viewing even in brightly lit environments. The 250 cd/m² brightness combined with a contrast ratio of 600:1 ensures that images appear vibrant and details are well-defined. With a typical response time of 5ms, the monitor handles motion with relatively low blur, making it sufficient for casual video playback.

In terms of connectivity, the Dell E176FPB offers a D-Sub (VGA) port, ensuring compatibility with a wide range of computers and devices. It also includes a built-in power supply, which minimizes desk clutter and simplifies installation.

The monitor incorporates Dell's commitment to sustainability and energy efficiency. It features Energy Star certification, which signifies compliance with energy-saving standards, ultimately reducing the carbon footprint. Additionally, the E176FPB adheres to the latest environmental regulations, making it a conscientious choice for eco-minded consumers.

With a tilt-adjustable stand, users can customize their viewing angles for improved ergonomic comfort. Using the monitor for extended periods becomes easier and less straining on the neck and eyes. The build quality of the E176FPB is robust, ensuring longevity and reliable performance.

Overall, the Dell E176FPB stands out for its user-friendly attributes, solid performance, and energy-efficient design, making it a practical option for those seeking a dependable monitor for various computing needs. Whether for professional or personal use, it balances functionality with sustainability, embodying Dell's reputation for delivering quality technology.