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Service Manual
19" LCD Monitor
DELL E193FPc
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 OFTHIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RELIABILITY FOR
CHANGES, ERRORS OR OMISSIONS.
Dell E193FPc
Table of contents
Table of contents ---------------------------------------------------------------------------------------------------------------- 02
Revision List -----------------------------------------------------------------------------------------------------------------------------03
Important Safety Notice ------------------------------------------------------------------------------------------------------------04
1. Monitor Specifications ------------------------------------------------------------------------------------------------------05
2. LCD Monitor Description -------------------------------------------------------------------------------------------------- 05
3. Operation instructions-----------------------------------------------------------------------------------------------------------06
3.1 General Instructions---------------------------------------------------------------------------------------------------------06
3.2 Control buttons -----------------------------------------------------------------------------------------------------------------06
3.3 Adjusting the Picture --------------------------------------------------------------------------------------------------------07
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. Mechanical Instruction -----------------------------------------------------------------------------------------------------------19
7. Schematic --------------------------------------------------------------------------------------------------------------------------24
6.1 Main Board ---------------------------------------------------------------------------------------------------------------24
6.2 Power Board ---------------------------------------------------------------------------------------------------------------29
8. Layout ----------------------------------------------------------------------------------------------------------------------- 31
7.1 Main Board ---------------------------------------------------------------------------------------------------------------- 31
7.2 Power Board -------------------------------------------------------------------------------------------------------------- 34
7.3 Key Board ----------------------------------------------------------------------------------------------------------------- 35
9. Maintainability-------------------------------------------------------------------------------------------------------------------- 36
8.1 Equipments and Tools Requirement -------------------------------------------------------------------------------- 36
8.2 Trouble Shooting --------------------------------------------------------------------------------------------------------------- 37
8.2.1 Main Board----------------------------------------------------------------------------------------------------------------37
8.2.2 Power/Inverter Board -------------------------------------------------------------------------------------------- 40
8.2.3 Keypad Board ---------------------------------------------------------------------------------------------------- 42
10. White Balance Adjustment ---------------------------------------------------------------------------------------------- 43
11. EDID Content --------------------------------------------------------------------------------------------------------------- 44
12. ISP User Manual ---------------------------------------------------------------------------------------------------------- 45
11.1 Connect ISP Writer preparation action ---------------------------------------------------------------------- 45
11.2 To Use ISP Writer ------------------------------------------------------------------------------------------------ 46
11.3 Executing ISP -------------------------------------------------------------------------------------------------------------50
13. BOM List -----------------------------------------------------------------------------------------------------------------------------51
14. Definition Of Pixel Defects--------------------------------------------------------------------------------------------------------74
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Dell E193FPc
Revision List
Revision Date Revision History TPV model
A00 Mar-15-2004 Initial Release T980KLLHJ8DMN
Change the panel from LG (LPL 19" (B4KB)) to
A01 Jul-20-2005 T980KSLHM8DLN
SEC (SEC 19" EX1 (LOO))
A02 Nov-22-2005 Add "Important Safety Notice"
A03 Mar.-28-2006 Add "Definition Of Pixel Defects"
Add "Max Brightness measurement" on
A04 April-25-2006
Page43
T980KALHK8DLN
A05 Jun-28-2006 Add new model in Item 13
T980KSLHK8DLN
A06 Mar-02-2007 Add Mechanical Instruction in Item 6
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Dell E193FPc
Important 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 TRANSFORMER FOR THIS UNIT WHEN SERVICING
REFER TO BACK COVER FOR IMPORTANT SAFETY GUIDELINGS
Important Safety Notice
Proper service and repair is important to the safe, reliable operation of all Dell Company** Equipment. The service
procedures recommended by Dell 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. Dell 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, Dell has not
undertaken any such broad evaluation. Accordingly, a servicer who uses a service procedure or tool which is not
recommended by Dell 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, Dell Company will be referred to as Dell.
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 Dell. Dell
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.)
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Dell E193FPc
1. Monitor Specifications
48 cm (19") a-si TFT Active matrix LCD panel, 0.294mm dot pitch.
16 factory presets, 20 new modes
Vertical refresh rate 55Hz to 75 Hz
Horizontal frequency 30kHz to 80kHz
Resolutions: 640 x 480 up to 1280 x 1024
Universal power supply designed for worldwide application
CE mark
TCO-99
VESA DPMS compliant
VESA DDC compliant
2. LCD Monitor Description
The LCD MONITOR will contain a main board, PWPC board, keypad 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
RS232 Connector
PWPC board Main Board
For white balance
(Include adapter and Inverter
adjustment in factory
board)
mode
Keyboard
Video signal, DDC
Host Computer
AC-IN
100-240V
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Dell E193FPc
3. Operation 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.
Control Button
A. Buttons for the OSD menu (On-Screen-display)
B. Brightness Button
C. Auto Adjust Button
D. Power On/Off Button and indicator
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Dell E193FPc
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