Dell E176FPB service manual Schematic Diagram, Main Board

Page 28

Dell E176FPc

7. Schematic Diagram

7.1 Main Board

 

 

 

 

 

D402

 

 

 

 

 

NC 1

 

 

 

VGA_5V +3.3V_VDD

 

 

 

2

1

2

 

 

 

 

 

 

 

D407

 

 

 

 

 

BAT54C

 

 

 

 

 

R4503

 

(3)

 

 

 

 

DDC_SDA_VGA

 

 

 

 

 

 

C444

 

R452

4.7K 1/16W

 

 

 

 

DDC_SDA_A

 

0.1uF/16V

1/16W 1/16W

 

 

 

R451

 

 

GND

 

 

 

 

4.7K 4.7K

 

 

1

U404

 

8

 

 

A0

VCC

 

 

2

7

 

 

A1

WP

 

 

3

6

 

 

A2

SCL

 

 

4

5

 

 

GND

SDA

 

 

 

 

 

 

GND

M24C02WMN6

 

 

 

 

D412

 

D411

 

 

 

 

5.6V5%

5.6V5%

DDC_SCL_VGA

(3)

 

 

 

 

 

+5V

 

 

 

C447

C448

 

 

 

NC

 

 

 

NC

 

 

 

 

1

2

1

 

 

SPI_3V3

GND

 

GND

 

3 SPI_3V3

 

D403

 

 

BAV99

 

 

 

VGA_5V

3

3

 

 

 

 

 

 

Pins 6/7/8 are R/G/B

 

 

 

return lines resp.

 

 

 

 

17

CN405

 

 

 

 

1DB15

 

 

 

 

11

Rin

 

 

 

 

6

Gin

 

 

R453

12

2

 

220

1/16W

 

7

 

 

 

HS_in

13

3

Bin

 

 

 

 

8

 

 

 

VS_IN

14

4

 

 

 

 

 

9

 

 

R454

15

5

R438

220

1/16W

 

10

75

1/16W

 

 

16

 

 

 

 

 

GND

 

R445

 

 

 

220

1/16W

 

 

 

D406

D410

 

 

 

LL5232B 5.6V 5%

LL5232B 5.6V 5%

+5V

 

+5V

 

 

 

 

 

 

 

 

C439

 

 

 

 

 

 

2

1

0.1uF/16V

 

 

 

 

 

2

 

 

 

 

 

 

GND

 

 

 

 

 

 

 

D404

 

D405

 

 

 

 

 

 

BAV99

 

BAV99

 

 

 

(10 mil, ┰キ︽絬)

 

 

3

FB410

 

 

 

 

 

 

1

2

R434

C432

0.047uF

 

 

 

RED+

(3)

 

 

60 OHM

75

 

1/16W

 

 

 

 

 

0.047uF

 

 

 

 

 

R441

C436

 

 

 

 

 

RED-

(3)

 

 

 

100

1/16W

 

 

 

FB411

 

 

 

 

 

 

 

 

 

 

 

 

 

1

2

R435

C433

0.047uF

 

 

 

GREEN+(3)

 

 

60 OHM

75

 

1/16W

 

 

 

 

 

0.047uF

 

 

 

 

 

R442

C437

 

 

 

 

 

GREEN- (3)

 

 

 

100

1/16W

 

 

 

FB412

 

 

 

 

 

 

 

 

 

 

 

 

 

1

2

R436

C434

0.047uF

 

 

 

BLUE+

(3)

 

 

60 OHM

75

 

1/16W

 

 

 

 

 

0.047uF

 

 

 

 

 

R443

C438

 

 

 

 

 

BLUE-

(3)

 

 

 

100

1/16W

 

R439

R440

 

 

 

 

 

 

 

 

 

 

 

1/16W

1/16W

75-ohm terminating resistor

 

 

very close to the VGA

 

 

 

75

75

conn.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+3.3V_VDD

 

 

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

R444

 

 

 

 

 

 

 

 

10K

1/16W

 

 

LL5232B

GND

LL5232B

 

 

 

 

R455

 

 

220

1/16W

 

 

 

D408

(3) EDID_WP

EDID_WP

 

LL5232B 5.6V 5%

 

 

 

 

 

GND

GND

 

 

 

 

 

R446

220

 

 

 

 

R447

220

D409

R448

 

R449

 

 

LL5232B 5.6V 5%

2.2K

1/16W

2.2K

1/16W

 

 

 

 

 

 

GND

VGA_PLUG

1/16W

1/16W

(8 mil)

 

 

C442 C443

NCNC

CABLE_DET (3)

VS (3)

HS (3)

Title

Input Connectors

 

 

 

Size

Document Number

 

Rev

A

 

 

D

Date:

Wednesday, June 29, 2005

Sheet 2

of 6

28

Image 28
Contents LCD Monitor Revision List Revision Release Date Revise history TPV modelAdd Definition Of Pixel Defects Add Max Brightness measurementTable of contents LayoutMonitor Specifications CLAA170EA07 CPTMonitor Block Diagram LCD Monitor DescriptionGeneral 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 Block Diagram Monitor Exploded ViewSoftware Flow Chart Dell E176FPc Electrical Block Diagram Flash MemoryLCD Interface Scalar GM2621Inverter/Power Board Disassembly Flow Chart RemarkRemove stand Remove bezelRemove rear cover Remove the shield Lvds Cable Magnetism ringEnd Schematic Diagram Main BoardGm2621 Keypad Panel Interface Power Power Board KBP206GIs power GND Is signal GND Page PCB Layout Dell E176FPc Inverter/Power Board Dell E176FPc Key Board Maintainability Equipments and Tools RequirementNo display Trouble shootingReplace U401 GM2621 Panel Power Circuit Inverter Control Relative 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 Definition Of Pixel Defects CLAA170EADell 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.