Dell SP2309Wc Service manual
23" LCD Color Monitor Dell SP2309Wc
Service
Service
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. Using the Front Panel Controls……………………….7
3.2.Control Buttons……………...............……...............8
3.3 Adjusting the Picture...........…………….........………..9
4.Input/Output Specification.............……………........…20
4.1.Input Signal Connector............………….................20
4.2.Factory Preset Display Modes...…..…......................21
4.3.Power Supply Requirements..........……...................22
4.4.Panel Specification…….....……………..................23
4.5.Definition of Pixel Defects…………...............……….25
5.Block Diagram…….…...................…………................27
5.1.Software Flow Chart………..………………....….......27
5.2.Electrical Block Diagram………………..…..….......29
6.Mechanical Instruction………………..…..….......31
7.Schematic Diagram………..................................….....36
7.1Main Board......………......................................36
7.2 Power Board……..…….……....................................44
7.3 USB Board……………………………………………..46
7.4 Key Board………………………...…………………….47
8.PCB Layout..……...………….......................................48
8.1.Main Board……………..…........................................48
8.2.Power Board……………........................................50
8.3.USB Board………………….....................................51
9.Maintainability………….......................................52
9.1.Equipments and Tools Requirement..…….…...........52
9.2.Trouble Shooting………………….............................53
10.White-Balance, Luminance adjustment...………......60
11.ISP Instruction…………….…….................................61
12.Monitor Exploded View…………….…………............65
13.BOM List………….....................................................67
14.Different Parts List…………………….……………...89
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.
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23" LCD Color Monitor Dell SP2309Wc
Revision List
Revision Release Date Revise history TPV model
HDRSA3NKWMDYPN
HDRSA3NKWMDYPC
A00 Sep.-18-2008 Initial Release
HDRSA3NMWMDLPN
HDRSA3NLWMDYPN
HDRSA3NMWMDLPC
HDRSA3NLWMDYPC
HDRSA3NJWMDYPC
A01 Oct.-27-2008 Add new BOM in item 14
HDRSA3NBWMDYPC
HDRSA3NFWMDYPC
HDRSA3NFWMDYPN
HDRSA3NBWMDYPN
A02 Dec.-2-2008 Add new BOM in item 14
Add new BOM in item 14 HDRSA3NMWMDDPC
A03 Dec.-22-2008
Change Y value to Ymin (min
HDRSA3NBWMDY5C
HDRSA3NJWMDYPN
ALL
luminance value）in item 10
2
23" LCD Color Monitor Dell SP2309Wc
ECN History
ECN No. Change Description Service Deposition Cut-in date MSR
3
23" LCD Color Monitor Dell SP2309Wc
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.)
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23" LCD Color Monitor Dell SP2309Wc
1. Monitor Specifications
Screen type Active matrix - TFT LCD
Panel Type
Size
LCD Panel
Pixel pitch
Viewable angle
Response time 2 ms typical (Grey to Grey)
Separate Sync H/V TTL
Input
Dynamic contrast ratio 1000:1 (typical)
Signal cable type
H-Frequency 30kHz – 83kHz
V-Frequency 56 - 76Hz
LTM230TT02 C01 KR SEC
23 inches (23-inch viewable image size)
0.249 mm mm (H) x 0.249 mm mm(V)
160° (vertical) typ, 160° (horizontal) typ
Digital: Detachable, DVI-D, Solid pins, shipped detached from the
monitor
Analog: Detachable, D-Sub, 15pins, shipped attached to the monitor
HDMI: Detachable, HDMI-A, Solid pins, shipped without cable
Luminance output 300 CD/m ²(typical)
Max. Resolution
Plug & Play VESA DDC
EPA ENERGY
®
STAR
Dimensions (with stand)
Power Source
Video display capabilities (DVI
playback)
Environmental
Considerations
ON Mode <75W
OFF Mode <1W
2048 x 1152 at 60 Hz
Height : 440.10 mm
Width: 558.00 mm
Depth：265.30 mm
100 to 240 VAC / 50 or 60 Hz +
480i/480p/576i/576p/1080i/1080p (Supports HDCP)
Operating Temp: 5° to 35°C
Operating Humidity: 10% to 80%
Storage Temp.: -20° to 60°C
3 Hz / 1.5A
Weight
Weight with packaging:
Weight with stand assembly and cables:
Weight without stand assembly:
Weight of stand assembly:
5
25.80 Lbs (11.724kg)
10.96 Lbs (4.98kg)
6.12 Lbs (2.78kg)
17.33 Lbs (7.874kg)
23" LCD Color Monitor Dell SP2309Wc
2. LCD Monitor Description
The LCD monitor will contain a main board, power board, key board and a USB 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
Key board
AC-IN
100-240V
USB board
Video signal, DDC
Host Computer
RS232 Connector
For white balance
adjustment in factory
mode
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23" LCD Color Monitor Dell SP2309Wc
3. Operation instructions
3.1 Using the Front Panel Controls
Use the buttons on the front of the monitor to adjust the image settings.
Front panel Button Description
A
B
C
D
Preset modes
Brightness / Contrast
Input source
Use the Preset modes button to choose from a list of preset color
modes.
Use the Brightness / Contrast button to direct access to the
"Brightness" and "Contrast" control menu.
Use the Input source button to select different video signals that may be
connected to your monitor.
Use the Menu button to open the on-screen display(OSD).
Menu
E
Exit
Use the buttons on the front of the monitor to adjust the image settings.
Use the Exit button to exit on-screen display(OSD) from menu and
sub-menus.
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23" LCD Color Monitor Dell SP2309Wc
3.2 Control Buttons
Label Description
1 Power Control (Touch Sensor)
2 Capacitive touch buttons
3 Webcam
4 Microphone
Label Description
1 AC power cord connector
2 HDMI connector
3 DVI connector
4 VGA connector
5 Audio Line-in
6 Audio Line-out
7 USB upstream port
8 USB downstream ports(2)
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23" LCD Color Monitor Dell SP2309Wc
3.3 Adjusting the Picture
1. Press the button to open the OSD menu and display the main menu.
Main Menu
2. Press the
the option name is highlighted.
3. To select the highlighted item on the menu press the
4. Press the
5. Press the
the menu, to make your changes.
6.Select the
previous menu.
The table below provides a list of all the OSD menu options and their functions.
and buttons to toggle between options in the Menu. As you move from one icon to another,
again.
and buttons to select the desired parameter.
button to enter the slide bar and then use the or button, according to the indicators on
to return to previous menu without accepting current settings or to accept and return to
Icon Menu and
Submenus
Description
BRIGHTNESS
/CONTRAST
Use the Brightness and Contrast menu to adjust the Brightness/Contrast.
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23" LCD Color Monitor Dell SP2309Wc
Back
Brightness
Contrast
Press
Allows you to adjust the brightness or luminance of the backlight.
Press the
decrease brightness (min 0 ~ max 100).
Allows you to adjust the contrast or the degree of difference between
darkness and lightness on the monitor screen. Adjust brightness first, and
adjust contrast only if you need further adjustment.
Press the
to decrease contrast (min 0 ~ max 100).
to go back to the main menu.
button to increase brightness and press the button to
button to increase contrast and press the button
Auto Adjust
Auto Adjustment allows the monitor to self-adjust to the incoming video signal.
Input Source
Use this button to activate automatic setup and adjust menu. The following dialog
appears on a black screen as the monitor self-adjusts to the current input:
After using Auto Adjustment, you can further tune your monitor by using the Pixel
Clock (Coarse) and Phase (Fine) controls under Image Settings.
Use the Input Source menu to select different video signals that may be connected
to your monitor.
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23" LCD Color Monitor Dell SP2309Wc
COLOR
SETTINGS
Color setting
Push
Select VGA input when you are using the analog (VGA) connector. Push
select the VGA input source.
Select DVI-D input when you are using the digital (DVI) connector. Push
select the DVI input source.
Select Auto select to let the monitor search for available input signals.
Use the Color Setting menu to adjust the monitor's color settings.
to go back to the main menu
to
to
mode
submenu
Back
Press
to go back to the main menu.
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23" LCD Color Monitor Dell SP2309Wc
Input Color
Format
Mode
Selection
Preset Mode
Allows you to set the video input mode to.
• RGB: Select this option if your monitor is connected to a computer or DVD
• player using the HDMI cable or the HDMI to DVI adapter.
• YPbPr: Select this option if the your DVD player supports only YPbPr output.
Allows you to set the display mode to:
• Graphics: Select this mode if your monitor is connected to your computer.
• Video: Select this mode if you monitor is connected to a DVD player.
Allows you to choose from a list of preset color modes.
In the Graphics mode, you can set the color to the following preset values:
• Standard: Loads the monitor's default color settings. This is the default
preset mode.
• Multimedia: Loads color settings ideal for multimedia applications.
• Game: Loads color settings ideal for most gaming applications.
• Warm: Increase the color temperature. The screen appears warmer with
a red/yellow tint.
• Cool: Decreases the color temperature. The screen appears cooler with
• a blue tint.
• Custom (RGB): Allows you to manually adjust the color settings. Press
the
Blue values and create your own preset color mode.
In the Video mode, you can set the color to the following preset values:
• Movie: Loads color settings ideal for movies. This is the default preset mode.
and buttons to adjust the Red, Green, and
• Game: Loads color settings ideal for most gaming applications.
• Sports: Loads color settings ideal for sports.
• Nature: Loads color settings ideal for nature.
Hue
Allows you to adjust the skin tone of the image. Use
12
or to adjust the hue
23" LCD Color Monitor Dell SP2309Wc
from '0' to '100'.
NOTE: Hue adjustment is available only in the Video mode.
Saturation
Color Reset
DISPLAY
SETTINGS
Display
setting mode
submenu
Allows you to adjust the color saturation of the image. Use
the saturation from '0' to '100'.
Resets your monitor's color settings to the factory defaults.
Use the Displays Settings menu to adjust the sharpness, dynamic contrast,
response time, and zoom.
or to adjust
Back
Wide Mode
Horizontal po
sition
Vertical Posit
ion
Press
Allows you to change the image scale with various default settings.
NOTE: Wide Mode is not available at video resolutions greater than 1680x1050.
However, 16:9 and Fill will be available for video timing.
Use the and buttons to adjust image left and right (min 0 ~ max 100).
NOTE: When using DVI source, the Horizontal Position setting is not available.
Use the and buttons to adjust image up and down (min 0 ~ max 100).
NOTE: When using DVI source, the Vertical Position setting is not available.
to go back to the main menu.
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23" LCD Color Monitor Dell SP2309Wc
Zoom
Phase
Sharpness
Allows you to zoom in to specific area of interest on your monitor.
Use
NOTE: Zoom will reset to default after power cycling or after power save recovery.
NOTE: Zoom default setting will be zero when using PC format (RGB color space)
and 10 when using the video format from DVD players (YPbPr color space).
If satisfactory results are not obtained using the phase adjustmenu, use the
Pixel Clock (coarse) adjustmenu and then use Phase (fine).
NOTE: Pixel Clock and Phade Adjustments are only available for "VGA" input.
Allows you to increase or decrease the sharpness of the image.
Use
and buttons to adjust the zoom from '0' to '100'.
and buttons to adjust the sharpness from '0' to '100'.
Dynamic
Contrast
Response
Time
The dynamic contrast helps get a higher contrast if you choose Game preset,
Movie Preset, Sports Preset and Nature Preset.
Use the
Use the
NOTE: Brightness control is disabled in Dynamic Contrast mode.
Response time is the time required for an LCD pixel to change from fully
active (black) to fully inactive (white), then back to fully active again.
You can set the response time to:
• Normal
button to enable the Dynamic Contrast adjustment.
button to disable the Dynamic Contrast adjustment.
• Overdrive (default).
Display Reset
AUDIO
SETTINGS
Resets the monitor's display settings to the factory defaults.
Use the Audio Settings to adjust the audio settings.
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23" LCD Color Monitor Dell SP2309Wc
Audio Setting
mode
submenu
Power Save
Audio
Allows you to turn on or off the power to the audio during the audio
power save
mode.
Default is "On".
On — Allows you to turn off the power to the sound bar during monitor standby.
Off — Allows you to turn on the power to the sound bar during monitor standby.
Reset Audio
Setting
Exit Menu
OTHER
SETTINGS
Resets your monitor audio settings to the factory defaults.
Press
to exit the OSD main menu and press to accept changes.
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23" LCD Color Monitor Dell SP2309Wc
Back
Language
Menu
Transparency
Menu Timer
Menu Lock
Press
Allows you to set the OSD display to one of five languages: English, Espanol,
Francais, Deutsch, or Japanese.
Allows you to adjust the OSD background from opaque to transparent.
Allows you to set the time for which the OSD remains active after you press a
button on the monitor.
Use the
5 to 60 seconds.
Controls user access to adjustments. When Lock is selected, no user
to go back to the main menu.
and buttons to adjust the slider in 1 second increments, from
adjustments are allowed. All buttons are locked except
Button Sound
DDC/CI
Turns on or off the button sound.
DDC/CI (Display Data Channel/Command Interface) allows a software on your
computer to adjust the monitor display settings like the brightness, color balance etc.
Enable (Default): Optimizes the performance of your monitor and provides a better
16
button.
23" LCD Color Monitor Dell SP2309Wc
customer experience.
Disable: Disables the DDC/CI option and the following message appears
on the screen.
Select Yes to disable DDC/CI or No to return.
LCD
Conditioning
LCD conditioning helps eliminate any image retention and may take several hours.
NOTE: Severe cases of image retention are known as burn-in. LCD Conditioning
does not remove burn-in.
Disable: This is the default option.
Enable: Enables LCD conditioning and the following message appears on the
screen.
Select Yes to proceed and No to return.
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23" LCD Color Monitor Dell SP2309Wc
Factory Reset
Personalize
Resets all OSD settings to the factory preset values.
Allow you to adjust shortcut key button for preset mode. Brightness & Contrast
Auto Adjust and Input source.
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23" LCD Color Monitor Dell SP2309Wc
OSD Warning Messages
The following warning messages may appear on the screen to indicate that the monitor is out of synchronization.
This means that the monitor cannot synchronize with the signal that it is receiving from the computer.
Either the signal is too high or too low for the monitor to use. See Specifications for the Horizontal and
Vertical frequency ranges addressable by this monitor. Recommended mode is 1680 X 1050 at 60Hz.
If you press any button other than the power button one of the following messages will appear depending on
the selected input:
When monitor enters Power Save mode, the following message appears :
See Solving Problems for more information.
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23" LCD Color Monitor Dell SP2309Wc
4. Input/Output Specification
4.1 Input Signal Connector
VGA Connector:
Pin No. Description Pin No. Description
1. Red Video 9. DDC +5V
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
DVI Connector:
Note: Pin 1 is at the top right.
Pin Signal Assignment Pin Signal Assignment Pin Signal Assignment
T.M.D.S. Data 2-
1
T.M.D.S. Data 2+
2
TMDS Ground
3
4 Floating 12 Floating 20 Floating
5 Floating 13 Floating 21 Floating
9 TMDS RX1- 17 TMDS RX0-
10 TMDS RX1+ 18 TMDS RX0+
11
TMDS Ground 19 TMDS Ground
DDC Clock 14 +5V Power
6
DDC Data 15
7
8
Floating
16 Hot Plug Detect
22 TMDS Ground
Self test 23 TMDS Clock+
24 TMDS Clock-
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23" LCD Color Monitor Dell SP2309Wc
Pin
Number
1
2
3
4
5
6
7
8
9
10
19-pin Side of the Connected Signal
Cable
T.M.D.S. Data 2-
T.M.D.S. Data 2 Shield
T.M.D.S. Data 2+
T.M.D.S. Data 1+
T.M.D.S. Data 1 Shield
T.M.D.S. Data 1-
T.M.D.S. Data 0+
T.M.D.S. Data 0 Shield
T.M.D.S. Data 0-
T.M.D.S. Clock +
4.2 Factory Preset Display Modes
Display Mode Horizontal Frequency (kHz)
Pin
Number
11
12
13
14
15
16
17
18
19
Vertical Frequency
(Hz)
19-pin Side of the Connected Signal
Cable
T.M.D.S. Clock Shield
T.M.D.S. Clock -
CEC
Reserved(N.C. on device)
SCL
SDA
DDC/CEC Ground
+5V Power
Hot Plug Detect
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 40.0 +/+
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 +/+
VESA, 1152 x 864 67.5 75.0 108.0 +/+
VESA, 1280 x 1024 64.0 60.0 108.0 +/+
VESA, 1280 x 1024 80.0 75.0 135.0 +/+
VESA, 1680 x 1050 65.3 60.0 146.3 -/+
VESA, 1680 x 1050 64.7 59.9 119.0 +/-
VESA, 1920 x 1200 74.04 59.9 154.0 +/-
VESA, 2048 x 1152 70.99 59.9 156.75 +/-
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23" LCD Color Monitor Dell SP2309Wc
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％
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23" LCD Color Monitor Dell SP2309Wc
4.4 Panel Specification
LTM230TT02 is a color active matrix liquid crystal display(LCD)that uses amorphous silicon TFT(Thin Flim
Transitor) as switching components. This Model is compose of a TFT LCD panel, a driver circuit and a back light
unit. The resolution of a 23”is 2048X1152 and this model can display up to 16.7 millions colors.
4.4.1 Display Characteristics
4.4.2 Optical Characteristics
The optical characteristics are measured under stable conditions at 25℃:
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23" LCD Color Monitor Dell SP2309Wc
24
23" LCD Color Monitor Dell SP2309Wc
4.5 Definition of Pixel Defects
4.5.1 Spec.of Pixel Defect
25
23" LCD Color Monitor Dell SP2309Wc
4.5.2 Optical Characteristics Failure Criteria
4.5.3 FOS Spec.
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23" LCD Color Monitor Dell SP2309Wc
5. Block Diagram
5.1 Software Flow Chart
1
2
4
Y
N
3
N
10
12
5
Y
6
7
9
Y
N
N
Y
N
11
13
8
N
Y
14
18
N
19
Y
27
15
17
Y
N
16
Y
23" LCD Color Monitor Dell SP2309Wc
1) MCU Initializes.
2) Is the EEprom blank?
3) Program the EEprom by default values.
4) Get the PWM value of brightness from EEprom.
5) Is the power key pressed?
6) Clear all global flags.
7) Are the AUTO and SELECT keys pressed?
8) Enter factory mode.
9) Save the power key status into EEprom. Turn on the LED and set it to green color. Scalar initializes.
10) In standby mode?
11) Update the lifetime of back light.
12) Check the analog port, are there any signals coming?
13) Does the scalar send out an interrupt request?
14) Wake up the scalar.
15) Are there any signals coming from analog port?
16) Display "No connection Check Signal Cable" message. And go into standby mode after the message
disappears.
17) Program the scalar to be able to show the coming mode.
18) Process the OSD display.
19) Read the keyboard. Is the power key pressed?
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