Dell E1709Wc User manual

17" LCD Color Monitor Dell E1709Wc
1
Service
Service
Service
Horizontal Frequency
30kHzto83kHz
Table Of Contents
Description Page Description Page
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.
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
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
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

17" LCD Color Monitor Dell E1709Wc
2
Revision List
Revision Release Date Revise history TPV model
T7RGMGHBX5DLNN
T7RGMGHKX5DLNN
T7RHMGHBX5DLNN
A00 Jul-25-2008 Initial Release
T7RHMGHKX5DLNN
T7RGMGHBX5DLNC
T7RGMGHKX5DLNC
T7RGMGHMX5DFNC
T7RHMGHMX5DFNC
T7RHMGHFX5DLNC
T7RGMGHFX5DLNC
T7RHMGHJX5DLNC
T7RGMGHJX5DLNC
T7RHMGHKX5DLNC
T7RHMGHBX5DLNC
T7RGMGHMX5DLNC
T7RHMGHMX5DLNC
T7RGMGHLX5DLNC
A01 Aug.-13-2008 Add TPV Models in item 14
T7RHMGHLX5DLNC
T7RGMGHKX5DD1C
A02 Sep.-29-2008 Add new BOM in item 14
T7RHMGHKX5DD1C
T7RGMGHKX5DD2C
Add new BOM in item 14
T7RHMGHKX5DD2C
A03 Dec.-22-08
Change Y value to Ymin (min
luminance value）in item 10 ALL

17" LCD Color Monitor Dell E1709Wc
3
ECN History
ECN No. Change Description Service Deposition Cut-in date MSR

17" LCD Color Monitor Dell E1709Wc
4
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
5
1. Monitor Specifications
Screen type Active matrix - TFT LCD
Panel Type LM171WX3-TLC2 NJ LGD
Size
17 inches
(17-inch wide viewable image size)
Pixel pitch 0.2553mm (H) x 0.255mm(V)
Viewable angle 150° (vertical) typ, 160° (horizontal) typ
LCD Panel
Response time 8ms typical
Video R, G, B Analog Interface, DVI digital Interface
Separate Sync H/V TTL
H-Frequency 30kHz – 83kHz
Input
V-Frequency 56 - 75Hz
Dynamic contrast ratio 600:1 (typical)
Luminance output 250 CD/m ²(typical)
Max. Resolution 1440 x 900 at 60 Hz
Plug & Play VESA DDC
ON Mode <75W
EPA ENERGY
STAR®OFF Mode <1W
Input Connector 15-pin D-subminiature, blue connector;
Dimensions (with stand)
Height : 13.17 inches ( 334.58 mm)
Width: 15.91 inches ( 404.15 mm)
Depth：6.17 inches ( 156.72 mm)
Power Source 100 to 240 VAC/50 or 60 Hz + 3 Hz/1.6A (Max.)
Environmental
Considerations
Operating Temp: 5° to 35°C
Operating Humidity: 10% to 80%
Storage Temp.: -20° to 60°C
Weight
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)
Weight of stand assembly: 0.83 lbs ( 0.38 kg)

17" LCD Color Monitor Dell E1709Wc
6
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.
Video signal, DDC
Power board
Flat Panel and
CCFL backlight
Main Board
Key board
RS232 Connector
For white balance
adjustment in factory
mode
CCFL Drive.
AC-IN
100-240V
Monitor Block Diagram
Host Computer

17" LCD Color Monitor Dell E1709Wc
7
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
A
Menu
Use the MENU button to launch the on-screen display (OSD) and select the OSD
Menu.
B
Brightness&Con
trast /Adjust UP
Use this button to directly access the "Brightness/Contrast" menu or to increase the
values of the selected menu option.
C
Automatic
Adjust /Adjust
Down
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:
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.
D
Input Source
Select/Select
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
8
E
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
9
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
Or
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 button once to activate the highlighted option.
4.Push the and buttons to select the desired parameter.
5.Push to enter the slide bar and then use the or button, according to the indicators on the menu, to
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.

17" LCD Color Monitor Dell E1709Wc
10
Icon Menu and
Submenus
Description
Brightness
& Contrast
Use this menu to activate Brightness/Contrast adjustment.
Brightness Brightness adjusts the luminance of the backlight.
Push the button to increase brightness and push the button to decrease
brightness (min 0 ~ max 100).
Contrast Adjust Brightness first, and then adjust Contrast only if further adjustment is necessary.
Push the button to increase contrast and push the button to decrease
contrast (min 0 ~ max 100).
The Contrast function adjusts the degree of difference between darkness and lightness
on the monitor screen.
Auto Adjust Even though your computer recognizes your monitor on startup, the Auto Adjustment
function optimizes the display settings for use with your particular setup.
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
11
Input Color
Format
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.
Mode Selection You can choose Graphics or Video according to the input signal. Select Graphics
if connecting a PC to your monitor; for connecting DVD, STB or VCR to your
monitor, Video is recommended.
Preset Modes 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
12
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;
•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.
Hue This feature can shift color of video image to green or purple. This is used to adjust the
desired flesh tone color. Use or to adjust the hue from '0' to '100' .
Push to increase the green shade of the video image
Push to decrease the purple shade of the video image

17" LCD Color Monitor Dell E1709Wc
13
Saturation
This feature can adjust the color saturation of the video image. Use or to
adjust the saturation from '0' to '100'.
Push to increase the monochrome appearance of the video image
Push to decrease the colorful appearance of the video image
Reset Color Set
tings
Reset your monitor color settings to the factory settings.
Display Settings Use the Display Settings to adjust image.
Horizontal
Position Use the or buttons to adjust image left and right. Minimum is '0' (-).
Maximum is '100' (+).
Vertical Position
Use the or buttons to adjust image up and down. Minimum is '0' (-).
Maximum is '100' (+).
Sharpness
This feature can make the image look sharper or softer. Use or to
adjust the sharpness from '0' to '100'.
Pixel Clock 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 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
14
Reset Display
Settings
Select this option to restore default display settings.
Other Settings Select this option to adjust the settings of the OSD, such as, the languages of the
OSD, the amount of time the menu remains on screen, and so on.
Language 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 Select this option to change the menu transparency by pressing or
(Minimum: 0 ~ Maximum: 100).
Menu Timer OSD Hold Time: Sets the length of time the OSD will remain active after the last time you
pressed a button.
Use the or buttons to adjust the slider in 5 second increments, from 5 to
60 seconds.
Menu Lock Controls user access to adjustments. When 'Lock' is selected, no user adjustments are
allowed. All buttons are locked except the menu button.
DDC/CI 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.

17" LCD Color Monitor Dell E1709Wc
15
LCD
Conditioning
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".
Factory Reset Reset all OSD settings to the factory preset values.

17" LCD Color Monitor Dell E1709Wc
16
4. Input/Output Specification
4.1 Input Signal Connector
VGA Connector:
Pin No. Description Pin No. Description
1. Red Video 9.
Computer 5V/3.3V
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
VGA Connector layout
4.2 Factory Preset Display Modes
Display Mode Horizontal
Frequency
(kHz)
Vertical
Frequency
(Hz)
Pixel Clock
(MHz)
Sync Polarity
(Horizontal/Vertical)
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 -/+

17" LCD Color Monitor Dell E1709Wc
17
4.3 Power Supply Requirements
A/C Line voltage range : 100 V ~ 240 V
A/C Line frequency range : 50 ±3Hz, 60 ±3Hz
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)
with a maximum of 1 half-wave missing per second
DC output Voltage : 5VDC ± 5％; 12VDC± 5％

17" LCD Color Monitor Dell E1709Wc
18
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
19
4.4.2 Optical Characteristics
Ta= 25°C, VLCD=5.0V, fV=60Hz fCLK=54MHz, IBL=7.5mA

17" LCD Color Monitor Dell E1709Wc
20
4.5 Definition Of Pixel Defects
LM171WX3-TLC2 Dot Defect
4.5.1.1 Bright Dot
Dots(sub-pixels) which appeared brightly in the screen when the LCM displayed with Full Black pattern
- 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 Total amount of Dot Defects -------------------- 5 Max (except Partial bright dot)
Note) a. Every dot herein means Sub-Pixel (Each Red, Green, or Blue Color)
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