Dell E1709Wc A03 Schematic

17" LCD Color Monitor Dell E1709Wc

Service

Horizontal Frequency

30 kHz to 83 kHz

Table Of Contents

Description Page Description Page

Table Of Contents.......…….................……...........…........1

Revision List.….........................………................……......2

ECN History.….......................………..................……......3

Important Safety Notice.….……….…..................……......4

1.Monitor Specifications.....…........................………........5

2.LCD Monitor Description…………………………….......6

3.Operation Instructions……………...............……...........7

3.1.Control Buttons………………..............……..............7

3.2 Adjusting the Picture...........……………….........…….9

4.Input/Output Specification.............……………........…16

4.1.Input Signal Connector............………..….................16

4.2.Factory Preset Display Modes...…..…......................17

4.3.Power Supply Requirements..........……...................17

4.4.Panel Specification…….....……………..................18

4.5 Definition Of Pixel Defects……………………………20

5. Block Diagram………………………………………..….22

5.1.Software Flow Chart…………..……………....….......22

5.2.Electrical Block Diagram………………..…..….......24

6.Mechanical Instruction………………..……..…..….......26

7.Schematic Diagram………..................................….....31

7.1Main Board......………......................................31

7.2 Power Board……..…….……....................................36

8.PCB Layout..……...………….......................................38

8.1.Main Board……………..…........................................38

8.2.Power Board……………........................................40

8.3.Key Board………………….......................................41

9.Maintainability………….......................................42

9.1.Equipments and Tools Requirement..…….…...........42

9.2.Trouble Shooting………………….............................42

10.White-Balance, Luminance adjustment.....……….....48

11.ISP Instruction…………….…….................................50

12.Monitor Exploded View……….…….…………............54

13.BOM List………….....................................................59

14.Different Parts List………………...……………………65

SAFETY NOTICE

ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE

CHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING

ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.

CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING

17" LCD Color Monitor Dell E1709Wc

Revision List

Revision Release Date Revise history TPV model

T7RGMGHBX5DLNN

T7RGMGHKX5DLNN

A00 Jul-25-2008 Initial Release

T7RHMGHBX5DLNN

T7RHMGHKX5DLNN

T7RGMGHBX5DLNC

T7RGMGHKX5DLNC

T7RGMGHMX5DFNC

T7RHMGHMX5DFNC

A01 Aug.-13-2008 Add TPV Models in item 14

A02 Sep.-29-2008 Add new BOM in item 14

Add new BOM in item 14

A03 Dec.-22-08

Change Y value to Ymin (min

luminance value）in item 10

T7RHMGHFX5DLNC

T7RGMGHFX5DLNC

T7RHMGHJX5DLNC

T7RGMGHJX5DLNC

T7RHMGHKX5DLNC

T7RHMGHBX5DLNC

T7RGMGHMX5DLNC

T7RHMGHMX5DLNC

T7RGMGHLX5DLNC

T7RHMGHLX5DLNC

T7RGMGHKX5DD1C

T7RHMGHKX5DD1C

T7RGMGHKX5DD2C

T7RHMGHKX5DD2C

ALL

17" LCD Color Monitor Dell E1709Wc

ECN History

ECN No. Change Description Service Deposition Cut-in date MSR

17" LCD Color Monitor Dell E1709Wc

Important Safety Notice

Proper service and repair is important to the safe, reliable operation of all AOC Company Equipment. The service

procedures recommended by AOC and described in this service manual are effective methods of performing

service operations. Some of these service operations require the use of tools specially designed for the purpose.

The special tools should be used when and as recommended.

It is important to note that this manual contains various CAUTIONS and NOTICES which should be carefully read

in order to minimize the risk of personal injury to service personnel. The possibility exists that improper service

methods may damage the equipment. It is also important to understand that these CAUTIONS and NOTICES ARE

NOT EXHAUSTIVE. AOC could not possibly know, evaluate and advise the service trade of all conceivable ways in

which service might be done or of the possible hazardous consequences of each way. Consequently, AOC has not

undertaken any such broad evaluation. Accordingly, a servicer who uses a service procedure or tool which is not

recommended by AOC must first satisfy himself thoroughly that neither his safety nor the safe operation of the

equipment will be jeopardized by the service method selected.

Hereafter throughout this manual, AOC Company will be referred to as AOC.

WARNING

Use of substitute replacement parts, which do not have the same, specified safety characteristics may create

shock, fire, or other hazards.

Under no circumstances should the original design be modified or altered without written permission from AOC.

AOC assumes no liability, express or implied, arising out of any unauthorized modification of design.

Servicer assumes all liability.

FOR PRODUCTS CONTAINING LASER:

DANGER-Invisible laser radiation when open. AVOID DIRECT EXPOSURE TO BEAM.

CAUTION-Use of controls or adjustments or performance of procedures other than those specified herein may

result in hazardous radiation exposure.

CAUTION -The use of optical instruments with this product will increase eye hazard.

TO ENSURE THE CONTINUED RELIABILITY OF THIS PRODUCT, USE ONLY ORIGINAL MANUFACTURER'S

REPLACEMENT PARTS, WHICH ARE LISTED WITH THEIR PART NUMBERS IN THE PARTS LIST SECTION

OF THIS SERVICE MANUAL.

Take care during handling the LCD module with backlight unit

-Must mount the module using mounting holes arranged in four corners.

-Do not press on the panel, edge of the frame strongly or electric shock as this will result in damage to the screen.

-Do not scratch or press on the panel with any sharp objects, such as pencil or pen as this may result in damage to

the panel.

-Protect the module from the ESD as it may damage the electronic circuit (C-MOS).

-Make certain that treatment person’s body is grounded through wristband.

-Do not leave the module in high temperature and in areas of high humidity for a long time.

-Avoid contact with water as it may a short circuit within the module.

-If the surface of panel becomes dirty, please wipe it off with a soft material. (Cleaning with a dirty or rough cloth

may damage the panel.)

17" LCD Color Monitor Dell E1709Wc

1. Monitor Specifications

Screen type Active matrix - TFT LCD

Panel Type

Size

LCD Panel

Pixel pitch

Viewable angle

Response time 8ms typical

Video R, G, B Analog Interface, DVI digital Interface

Separate Sync H/V TTL

Input

H-Frequency 30kHz – 83kHz

V-Frequency 56 - 75Hz

Dynamic contrast ratio 600:1 (typical)

Luminance output 250 CD/m ²(typical)

LM171WX3-TLC2 NJ LGD

17 inches

(17-inch wide viewable image size)

0.2553mm (H) x 0.255mm(V)

150° (vertical) typ, 160° (horizontal) typ

Max. Resolution

Plug & Play VESA DDC

EPA ENERGY

STAR

Input Connector

Dimensions (with stand)

Power Source

Environmental Considerations

Weight

ON Mode <75W

OFF Mode <1W

1440 x 900 at 60 Hz

15-pin D-subminiature, blue connector;

Height : 13.17 inches ( 334.58 mm)

Width: 15.91 inches ( 404.15 mm)

Depth：6.17 inches ( 156.72 mm)

100 to 240 VAC/50 or 60 Hz +

Operating Temp: 5° to 35°C Operating Humidity: 10% to 80% Storage Temp.: -20° to 60°C

Weight with packaging: 9.5 lbs (4.32 kg)

Weight with stand assembly and cables: 7.43 lbs ( 3.37 kg)

Weight without stand assembly: 5.81 lbs ( 2.64 kg)

3 Hz/1.6A (Max.)

Weight of stand assembly: 0.83 lbs ( 0.38 kg)

17" LCD Color Monitor Dell E1709Wc

2. LCD Monitor Description

The LCD monitor will contain a main board, power board, and a key board which house the flat panel control logic,

brightness control logic and DDC.

The power board will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips

each voltage.

Monitor Block Diagram

CCFL Drive.

Flat Panel and

CCFL backlight

Power board

Main Board

AC-IN

100-240V

Key board

Video signal, DDC

Host Computer

RS232 Connector

For white balance

adjustment in factory

mode

17" LCD Color Monitor Dell E1709Wc

3. Operation instructions

3.1 Control Buttons

Use the buttons on the front of the monitor to adjust the image settings.

Front panel Button Description

Brightness&Con

trast /Adjust UP

Automatic

Adjust /Adjust

Down

Use the MENU button to launch the on-screen display (OSD) and select the OSD

Menu.

Use this button to directly access the "Brightness/Contrast" menu or to increase the

values of the selected menu option.

Use Auto Adjust to activate automatic setup/adjustment or to decrease the values of

the selected menu option. The following dialog appears on a black screen as the

monitor self-adjusts to the current input:

Input Source

Select/Select

Auto Adjustment allows the monitor to self-adjust to the incoming video signal. After

using Auto Adjustment, you can further tune your monitor by using the Pixel Clock

(Coarse) and Phase (Fine) controls under Image Settings.

Use this button to select an OSD menu option.

If VGA cable is not connected, a floating dialog box as shown below appears.

17" LCD Color Monitor Dell E1709Wc

Power

(with power light

indicator)

Use the Power button to turn the monitor on and off.

The Blue LED indicates the monitor is on and fully functional. An amber LED

indicates DPMS power save mode.

17" LCD Color Monitor Dell E1709Wc

3.2 Adjusting the Picture

1.Push the MENU button to launch the OSD menu and display the main menu.

Main Menu for Analog (VGA) Input

Main Menu for Digital (DVI-D) Input

2.Push the and buttons to move between the setting options. As you move from one icon to another, the

option name is highlighted. See the following table for a complete list of all the options available for the monitor.

3.Push the

4.Push the

5.Push

make your changes

6.Press the Menu button once to return to the main menu to select another option or press the Menu button two or

three times to exit from the OSD menu.

The table below provides a list of all the OSD menu options and their functions.

button once to activate the highlighted option.

and buttons to select the desired parameter.

to enter the slide bar and then use the or button, according to the indicators on the menu, to

17" LCD Color Monitor Dell E1709Wc

Icon

Menu and

Submenus

Brightness

& Contrast

Description

Use this menu to activate Brightness/Contrast adjustment.

Brightness

Contrast

Auto Adjust

Brightness adjusts the luminance of the backlight.

Push the

brightness (min 0 ~ max 100).

Adjust Brightness first, and then adjust Contrast only if further adjustment is necessary.

Push the

contrast (min 0 ~ max 100).

The Contrast function adjusts the degree of difference between darkness and lightness

on the monitor screen.

Even though your computer recognizes your monitor on startup, the Auto Adjustment

function optimizes the display settings for use with your particular setup.

button to increase brightness and push the button to decrease

button to increase contrast and push the button to decrease

NOTE: In most cases, Auto Adjust produces the best image for your configuration.

Color Settings

Use the Color Settings to adjust the color setting mode and color temperature.

There are different color setting sub-menus for VGA and Video input.

17" LCD Color Monitor Dell E1709Wc

Input Color

Format

Mode Selection You can choose Graphics or Video according to the input signal. Select Graphics

Preset Modes

Choose the RGB option if monitor is connected to a PC or a DVD using a VGA cable.

Choose the YPbPr option if monitor is connected to a DVD by a YPbPr to VGA or if the

DVD color output setting is not RGB.

if connecting a PC to your monitor; for connecting DVD, STB or VCR to your

monitor, Video is recommended.

When you select Graphics, you can choose Standard, Multimedia, Game, Warm, Cool,

or Custom (RGB);

• If you view media application like photo, clip etc via PC, choose "Multimedia"

preset;

• If you play a game in PC, choose "Gaming" preset;

• If you prefer a lower color temperature (5700K), choose "Warm" preset;

• If you prefer a higher color temperature, choose "Cool" preset;

• Custom (RGB) Preset offers a range of 6500K colors;

• Choose "Standard" to utilize the panel native color format;

• Select Warm preset for a reddish tint. This color setting is used for

color-intensive applications (photograph image editing, multimedia, movies,

etc.)

• Select Cool preset for a bluish tint. This color setting is used for text based

applications (spreadsheets, programming, text editors, etc.)

• Select Custom preset to increase or decrease each of the three colors (RGB)

independently, in single digit increments, from 0 to 100.

17" LCD Color Monitor Dell E1709Wc

When you select Video, you can choose Movie, Game, Sports, or Nature preset:

• For playing a movie, choose "Movie" preset;

• For playing a sport program, choose "Sports" preset;

Hue

• For playing a game, choose "Game" preset;

• For general picture or web or watch TV, choose Nature preset. You can adjust

the Hue(Tint)/Saturation based on your preference.

• Select Reset Color Settings to restore default (factory) Color settings.

This feature can shift color of video image to green or purple. This is used to adjust the

desired flesh tone color. Use

Push

to increase the green shade of the video image

to decrease the purple shade of the video image

or to adjust the hue from '0' to '100' .

17" LCD Color Monitor Dell E1709Wc

Saturation

This feature can adjust the color saturation of the video image. Use

adjust the saturation from '0' to '100'.

Push

Reset Color Set

tings

Display Settings Use the Display Settings to adjust image.

Reset your monitor color settings to the factory settings.

to increase the monochrome appearance of the video image

to decrease the colorful appearance of the video image

or to

Horizontal

Position

Vertical Position

Sharpness

Pixel Clock

Use the

Maximum is '100' (+).

Use the

Maximum is '100' (+).

This feature can make the image look sharper or softer. Use

adjust the sharpness from '0' to '100'.

The Phase and Pixel Clock adjustments allow you to adjust your monitor to your

preference. These settings are accessed through the main OSD menu, by selecting

'Image Settings'.

Use the

or buttons to adjust image left and right. Minimum is '0' (-).

or buttons to adjust image up and down. Minimum is '0' (-).

or to

or buttons to adjust for best image quality.

Phase

If satisfactory results are not obtained using the Phase adjustment, use the Pixel Clock

(coarse) adjustment and then use Phase (fine), again.

17" LCD Color Monitor Dell E1709Wc

Language

Reset Display

Settings

Other Settings Select this option to adjust the settings of the OSD, such as, the languages of the

Select this option to restore default display settings.

OSD, the amount of time the menu remains on screen, and so on.

Language option to set the OSD display to one of seven languages (English, Espanol,

Francais, Deutsch, Brazilian Portuguese,Simplified Chinese or Japanese).

Menu Transpare

ncy

Menu Timer

Menu Lock

DDC/CI

Select this option to change the menu transparency by pressing

(Minimum: 0 ~ Maximum: 100).

OSD Hold Time: Sets the length of time the OSD will remain active after the last time you

pressed a button.

Use the

60 seconds.

Controls user access to adjustments. When 'Lock' is selected, no user adjustments are

allowed. All buttons are locked except the menu

DDC/CI (Display Data Channel/Command Interface) allows your monitor parameters

(brightness, color balance etc) to be adjustable via software on your PC. You can disable

this feature by selecting "Disable".

Enable this feature for best user experience and optimum performance of your monitor.

or buttons to adjust the slider in 5 second increments, from 5 to

button.

17" LCD Color Monitor Dell E1709Wc

LCD

Conditioning

Factory Reset

Helps reduce minor cases of image retention. Depending on the degree of image

retention, the program may take some time to run. You can enable this feature by

selecting "Enable".

Reset all OSD settings to the factory preset values.

17" LCD Color Monitor Dell E1709Wc

4. Input/Output Specification

4.1 Input Signal Connector

VGA Connector:

Pin No. Description Pin No. Description

1. Red Video 9.

2. Green Video 10. GND-sync

3. Blue Video 11. GND

4. GND 12. DDC data

5. Self-test 13. H-Sync

6. R-Ground 14. V-Sync

7. G-Ground 15. DDC clock

8. B-Ground

4.2 Factory Preset Display Modes

Computer 5V/3.3V

VGA Connector layout

Display Mode Horizontal

Frequency

(kHz)

VESA, 720 x 400 31.5 70.0 28.3 -/+

VESA, 640 x 480 31.5 60.0 25.2 -/-

VESA, 640 x 480 37.5 75.0 31.5 -/-

VESA, 800 x 600 37.9 60.3 40 +/+

VESA, 800 x 600 46.9 75.0 40 +/+

VESA, 1024 x 768 48.4 60.0 65.0 -/-

VESA, 1024 x 768 60.0 75.0 78.8 +/+

VESA, 1152 x 864 67.5 75.0 108.0 +/+

VESA, 1280 x 800 61.6 60.0 83.5 +/-

VESA, 1280 x 1024 64.0 60.0 108.0 +/+

VESA, 1280 x 1024 80.0 75.0 135.0 +/+

VESA, 1440 x 900 56.0 60.0 106.0 -/+

Vertical

Frequency

(Hz)

Pixel Clock

(MHz)

Sync Polarity

(Horizontal/Vertical)

17" LCD Color Monitor Dell E1709Wc

4.3 Power Supply Requirements

A/C Line voltage range : 100 V ~ 240 V

A/C Line frequency range

Current : 1.5A max at 100V; 0.8A max at 240 V

Peak surge current : < 60A peak at 240 VAC and cold starting

Leakage current : < 3.5mA

Power line surge : No advance effects (no loss of information or defect)

DC output Voltage

: 50 ± 3Hz, 60 ± 3Hz

with a maximum of 1 half-wave missing per second

: 5VDC ± 5％; 12VDC± 5％

17" LCD Color Monitor Dell E1709Wc

4.4 Panel Specification

LM171WX3-TLC2 is a Color Active Matrix Liquid Crystal Display with an integral Cold Cathode Fluorescent

Lamp(CCFL) backlight system. The matrix employs a-Si Thin Film Transistor as the active element. It is a

transmissive type display operating in the normally white mode. It has a 17.1 inch diagonally measured active

display area with WXGA+ resolution (1440 vertical by 900 horizontal pixel array) Each pixel is divided into Red,

Green and Blue sub-pixels or dots which are arranged in vertical stripes. Gray scale or the brightness of the

sub-pixel color is determined with a 8-bit gray scale signal for each dot, thus, presenting a palette of more than

16,7M colors with Advanced-FRC(Frame Rate Control). It has been designed to apply the interface method

that enables low power, high speed, low EMI. FPD Link or compatible must be used as a LVDS(Low Voltage

Differential Signaling) chip. It is intended to support applications where thin thickness, wide viewing angle, low

power are critical factors and graphic displays are important.

4.4.1 Display Characteristics

17" LCD Color Monitor Dell E1709Wc

4.4.2 Optical Characteristics

Ta= 25°C, VLCD=5.0V, fV=60Hz fCLK=54MHz, IBL=7.5mA

17" LCD Color Monitor Dell E1709Wc

4.5 Definition Of Pixel Defects

LM171WX3-TLC2 Dot Defect

4.5.1.1

Dots(sub-pixels) which appeared brightly in the screen when the LCM displayed with Full Black pattern

Bright Dot

- R, G or B 1 dot --------------------------------- 0 Max

- Adjacent 2 dots -------------------------------- 0 Max

- Total amount of Bright dots -------------------- 0 Max

4.5.1.2 Dark Dot

Dots (sub-pixels) which appeared darkly in the screen when the LCM displayed with bright pattern.

- 1 dot -------------------------------------------- 5 Max

- Adjacent 2 dots -------------------------------- 2 Max

- Adjacent 3 dots -------------------------------- 1 Max

- Total amount of Dark dot ---------------------- 5 Max

- Minimum distance of Dark dots --------------- 5mm

4.5.1.3

Note) a. Every dot herein means Sub-Pixel (Each Red, Green, or Blue Color)

Total amount of Dot Defects -------------------- 5 Max (except Partial bright dot)

b. Bright dot

- Red or Blue dots smaller than half size of sub-pixel are not counted as a defect dots.

- Green dots smaller than 1 / 3 size of sub-pixel are not counted as a defect dots.

c. Dark dots smaller than half size of sub-pixel are not counted as a defect dots.

4.5.2. Polarizer Defects

Where, W: Width

L: Length

D: Average diameter =(a+b)/2

N: Quantity

Linear：a>2b

Circular: a<2b

Unit: mm

17" LCD Color Monitor Dell E1709Wc

Note) continued

c. Extraneous substances which can be wiped out, like Finger Print, Particles, are not considered as a

defect.

b. Defects which is on the Black Matrix(outside of Active Area) are not considered as a defect.

4.5.3 Foreign Material

Maximum allowable number of defects for 3.2 & 3.3 : N<=8

4.5.4 Line Defect

All kinds of line defects such as vertical, horizontal or cross are not allowed.

4.5.5 Bezel Appearance

Scratches, minor bents, stain, particles on the Bezel frame are not considered as a defect.

4.5.6 others

Issues, which are not defined in these criteria, shall be discussed with both parties, Customer and Supplier, for

better solution.

17" LCD Color Monitor Dell E1709Wc

5. Block Diagram

5.1 Software Flow Chart

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