Dell E176FPB service manual Panel Power Circuit, Inverter Control Relative Circuit

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Panel Power Circuit

Check C101 should have response from 0V to 5V when we switch the power switch from off to on

OK

Check CN101, if it is not soldered well

OK

Change panel

Inverter Control Relative Circuit

 

 

 

Dell E176FPc

 

 

 

 

 

Check the PPWR panel power relative circuit,

NG

Q704, Q706; in normal operation, When LED

 

=green, V-R725 should =5V,If PPWR

 

no-response when the power switch turn on and

 

turn off,

NG

 

 

 

 

 

 

 

Change CN101

 

 

 

 

 

 

 

 

Measured the inverter connector CN402 Pin2 on/off control=3.3V (on)

Pin4 PWM signal control dim 0V-5V

NG, still no screen

Replace Inverter board to new-one And check the screen is normal?

OK

NG

NG

Check the BKlt-On relative circuit, R705; in normal operation, when LED=green, R705 BKlt-On should=3.3V, If BKlt-On no-response when the power switch turn on-off, Replace U401

Check NO SCREEN APPEAR block

43

Image 43
Contents LCD Monitor Add Max Brightness measurement Revision ListRevision Release Date Revise history TPV model Add Definition Of Pixel DefectsLayout Table of contentsCLAA170EA07 CPT Monitor SpecificationsLCD Monitor Description Monitor Block DiagramGeneral Instructions Operation instructionsControl Buttons On Screen Menu/Display OSD Function Auto adjustment Adjustment MethodBrightness / Contrast Adjusting the Picture Exit Phase Color Settings Normal Preset Blue Preset Red Preset Dell E176FPc Language Factory Reset Input Signal Connector Input/Output SpecificationFactory Preset Display Modes Power Supply Requirements Panel Specification Optical Characteristics For LM170E01- TLB3/TLB4 panel Optical Characteristics For CLAA170EA07 panel Monitor Exploded View Block DiagramSoftware Flow Chart Dell E176FPc Scalar GM2621 Electrical Block DiagramFlash Memory LCD InterfaceInverter/Power Board Remove bezel Disassembly Flow ChartRemark Remove standRemove rear cover Remove the shield Magnetism ring Lvds CableEnd Main Board Schematic DiagramGm2621 Keypad Panel Interface Power KBP206G Power BoardIs power GND Is signal GND Page PCB Layout Dell E176FPc Inverter/Power Board Dell E176FPc Key Board Equipments and Tools Requirement MaintainabilityNo display Trouble shootingReplace U401 GM2621 Inverter Control Relative Circuit Panel Power CircuitU401-data Output No Power No Backlight Key Board White balance, Luminance adjustment Turn the POWER-button off to on to quit from factory mode Edid ContentMax Brightness measurement Connect ISP Writer preparation action To Use ISP Writer take E153FP for example Dell E176FPc Dell E176FPc Dell E176FPc Executing ISP Check List Steps for writing DDC: Dell E176FPc Description Quantity Unit Remark BOM ListLocation Description Quantity Unit Carton PCS SUB 15PIN PCS BAV99 PCS RST SM 0603 Jump MAX 0R PCS M24C02-WMN6TP PCS PCS CN1 B2P3S-VH PCS RST SM 1206 Jump MAX 0R PCS RLZ11B Llds PCS Heat Sink PCS CLAA170EA Definition Of Pixel DefectsDell E176FPc 14.2 LM170E01-TLB3 / LM170E01-TLB4 Line Defect

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.