Dell E152FPc User manual

DELL E152FPc
1
15” LCD MONITOR
DELL E152FPc
THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY. EVERY REASONABLE EFFORT
HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOT GUARANTEE THE
ACCURACY OF THIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RE LIABILITY
FOR CHANGES, ERRORS OR OMISSIONS.
MANUFACTURE DATA: MAR.-20-2005
SERVICE MANUAL

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Table of Contents
TABLE OF CONTENTS...............................................................................................................2
1. MONITOR SPECIFICATIONS .................................................................................................4
2. LCD MONITOR DESCRIPTION ..............................................................................................5
3. OPERATING INSTRUCTIONS................................................................................................6
3.1 GENERAL INSTRUCTIONS...............................................................................................6
3.2 CONTROL BUTTONS........................................................................................................6
3.3 ADJUSTING THE PICTURE...............................................................................................7
4. INPUT/OUTPUT SPECIFICATION........................................................................................10
4.1 INPUT SIGNAL CONNECTOR.........................................................................................10
4.2 FACTORY PRESET DISPLAY MODES............................................................................10
4.3 POWER SUPPLY REQUIREMENTS ...............................................................................11
4.4 PANEL SPECIFICATION..................................................................................................11
5. BLOCK DIAGRAM................................................................................................................14
5.1 MONITOR EXPLODED VIEW..........................................................................................14
5.2 SOFTWARE FLOW CHART.............................................................................................15
5.3 ELECTRICAL BLOCK DIAGRAM.....................................................................................17
6. SCHEMATIC..........................................................................................................................18
6.1 MAIN BOARD...................................................................................................................18
6.2 PWPC BOARD.................................................................................................................22
7. PCB LAYOUT........................................................................................................................25
7.1 MAIN BOARD...................................................................................................................25
7.2 PWPC BOARD.................................................................................................................27
7.3 KEYPAD BOARD .............................................................................................................28
8. MAINTAINABILITY................................................................................................................28
8.1 EQUIPMENTS AND TOOLS REQUIREMENT.................................................................28
8.2 TROUBLE SHOOTING ....................................................................................................29
9.WHITE-BALANCE, LUMINANCE ADJUSTMENT.................................................................35
10. EDIT CONTENT...................................................................................................................36
11. BILL OF MATERIAL LIST ...................................................................................................37
12.DEFINITION OF PIXEL DEFECTS.......................................................................................53

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Revision List
Revision Date Revision History TPV model
A00 Mar-20-2005 Initial Release
A01 April-25-2006
Add” Max Brightness measurement” on
Page36

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1. MONITOR SPECIFICATIONS
Driving system TFT Color LCD
Size 38.1mm(15.0")
Pixel pitch 0.297mm(H) x 0.297mm(V)
Viewable angle 120˚(H) 100˚(V)
Flat Panel
Response time (typ.) 25 ms
Video Analog Only
Sync. Type H/V TTL Separate and Composite Sync.
H-Frequency 30kHz – 63kHz
Input
V-Frequency 56-76Hz
Display Colors Over 16.2 million Colors
Dot Clock 80MHz
Max. Resolution 1024 x 768
Plug & Play VESA DDC2BTM
ON Mode <25W
<35W(For Samsung XH panel)
Power Consumption OFF Mode
<1W
Maximum Screen Size Horizontal : 11.9”(304.1mm)
Vertical:8.9”(228.1mm)
Power Source 110~240VAC,50~60Hz
Environmental
Considerations
Operating Temp: 5°C to35°C
Storage Temp.:-20°C to80°C
Packaged 5.31Kgs Unit
Weight (N. W.) Unpackaged 3.50Kgs Unit

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2. LCD MONITOR DESCRIPTION
The LCD MONITOR will contain a main board, an internal PWPC board, keypad board, which house the flat panel
control logic, brightness control logic and DDC.The internal PWPC board will drive the backlight of panel and the
DC-DC conversion. and provides the 5V DC-power to main board.
Monitor Block Diagram
Video signal, DDC
PWPC board
(Include adapter and Inverte
r
board)
Flat Panel and
CCFL backlight
Main Board
Keyboard
RS232 Connector
For white balance
adjustment in factory
mode
CCFL Drive.
AC-IN
100-240V
Host Computer

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3. OPERATING INSTRUCTIONS
3.1 GENERAL INSTRUCTIONS
Press the power button to turn the monitor on or off. The other control buttons are located at front panel of the
monitor. By changing these settings, the picture can be adjusted to your personal preferences.
-The power cord should be connected.
-Connect the video cable from the monitor to the video card.
-Press the power button to turn on the monitor, the power indicator will light up.
3.2 CONTROL BUTTONS
-Power Button:
When pressed, the monitor enters the off mode, and the LED turns blank. Press again to restore normal status.
-Brightness Button:
The Brightness Button is used to select the Brightness/Contrast adjust functions. Press to switch functions or
adjust settings.
-Auto Adjust Key:
The Auto Adjust Key is used to automatically set the H Position, V Position, Clock and Phase.
-Power Indicator:
Green — Power On mode.
Orange — Power Saving mode.
Blank —Power Off Mode.
A.Buttons for the OSD menu (On-Screen-display)
B. Brightness/Contrast menu Button
C. Auto Adjust Button
D. Power On/Off Button and indicator
Control Buttons

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3.3 ADJUSTING THE PICTURE
To set the OSD menu, perform the following steps:
Briefly press the SELCT / MENU button to activate the OSD menu.
The main menu appears on the screen with icons for the setting functions.
The first symbol (Exit) is highlighted.
Necessary, press the- or + button to mark another icon (e.g. Positioning).
Press the SELECT/MENU button to select the highlighted icon.
The corresponding setting window (here: Positioning) is displayed.
The first symbol (Exit) is highlighted.
If necessary, press the – or + button to mark the desired icon.
Press the SELECT/MENU button to select the highlighted function.
Press the – or + button to adjust the value for the selected function.
Press the SELECT/MENU button to exit the function.
Press the SELECT/MENU button to exit the sub-menu when “Exit” function is highlighted;
All changes are stored automatically.

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Adjusting the brightness and contrast
Calling the Brightness / Contrast setting window using Brightness button.
Brightness Setting the brightness of the display
With this function you change the brightness of the background lighting.
Contrast Setting the contrast of the display
With this function you modify the contrast of bright colour tones.
Adjusting size and position
Calling the Positioning setting window
H-Position Adjusting the horizontal position
With this function you move the picture to the left or to the right.
V-Position Adjusting the vertical position
With this function you move the picture up or down.
Setting Image
Calling the Image setting window
Auto Adjust Auto adjust will produce best image automatically, The information of “Auto Adjust In
Progress” will show;
Pixel clock Adjusting the pixel clock
Phase Adjusting the phase
Setting colour temperature and colours
Calling the Color setting window
Selecting the colour temperature
The colour temperature is measured in K (= Kelvin). You can select from Normal Preset,
Blue Preset, Red Preset to User Preset;
Normal preset
Blue preset
Red preset
User preset
= Original colour of the LCD display, it’s 6500K;
=5700Kcolour of the LCD display, it’s 9300K;
=9300K colour of the LCD display, it’s 5700K;
= Setting user-defined colours
In the user preset setting you can change the colour ratios of the basic colours (red,
green, blue) as required.
Setting display of the OSD menu
Calling the OSD Set up setting window
Horizontal
Position
Setting the horizontal position of the OSD menu
With this function you move the OSD menu to the left or to the right.

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Vertical
Position
Setting the vertical position of the OSD menu
With this function you move the OSD menu up or down.
OSD
Hold Time
Setting the display duration of the OSD menu, the default value is 20s;
With this function you select a value from 0 to 60 seconds.
If the set time expires without a setting being made, the OSD menu is automatically faded
out.
OSD
Lock
Setting the display of the OSD menu lock or unlock.
With this function you select Yes to lock OSD, NO to unlock it.
Setting Language
Calling the Language setting window
With this function you choose between English (default setting), French, German,
Spanish and Japanese as the language for the OSD menu.
Factory Reset
Activating the factory settings
With this function all settings except Language of OSD are reset to the factory settings
without prompting for confirmation.

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4. INPUT/OUTPUT SPECIFICATION
4.1 INPUT SIGNAL CONNECTOR
15-pin D-sub connector
PIN NO. DESCRIPTION PI N NO. DESCRIPTION
1. Red 9. +5V
2. Green 10. Detect Cable
3. Blue 11. Ground
4. Ground 12. DDC-Serial Data
5. Ground 13. H-Sync
6. R-Ground 14. V-Sync
7. G-Ground 15. DDC-Serial Clock
8. B-Ground
VGA Connector layout
15
610
11 15
4.2 FACTORY PRESET DISPLAY MODES
Display Mode
Horizontal
Frequency (kHz)
Vertical
Frequency (Hz)
Pixel Clock
(MHz)
Sync Polarity
(Horizontal /
Vertical)
DOS 720 x 400 31.5 70.1 28.3 -/+
VGA 640 x 480 31.5 60.0 25.18 -/-
VESA 640 x
480
37.5 75.0 31.5 -/-
VESA 800 x 600 37.9 60.3 40.0 +/+
VESA 800 x 600 46.9 75.0 49.5 +/+
VESA 1024 x 768 48.4 60.0 65.0 -/-
VESA 1024 x 768 60.0 75.0 78.8 +/+
For ergonomic reasons, a screen resolution of 1024 x 768 pixels is recommended. Because of the technology used
(active matrix) an LCD monitor provides a totally flicker-free picture even with a refresh rate of 60 Hz.