AOC 931SW series User manual

ServiceManual AOC931SW+
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LCD 显示器维修手册
Custom：AOC
Model：931SW+
本手册适用于主板为 715G3244-2(Scalar IC—RTD2270S)
This manual applies to Main Board 715G3244-2(Scalar IC—RTD2270S)

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REVISION LIST
Version Release Date Revision History Model TPV Model No
A00 Sep-01-2010 Initial Release AOC 931SW+ T9ANR5NYNNACNNJ
T9ALR5NYNNACNNJ

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CONTENTS
1. LCD Specifications ...........................................................................................................................4
1.1 Product Features .........................................................................................................4
1.2 Factory preset modes ..................................................................................................5
1.3 VGA Interface description ............................................................................................5
2. Operation instruction .....................................................................................................................6
2.1 Control Buttons ............................................................................................................6
2.2 OSD User mode adjustment .....................................................................................7
2.3 OSD Lock Function ...................................................................................................9
3. Panel Feature..................................................................................................................................10
3.1 General Specifications ...............................................................................................10
3.2 Electrical Absolute Ratings ........................................................................................10
3.3 Electrical Characteristics............................................................................................ 11
3.4 TFT LCD Module Block Diagram ............................................................................... 11
3.5 LCD module input terminal pin assignment ...............................................................12
4.Block Diagram ..................................................................................................................................13
4.1 LCD Block Diagram ...................................................................................................13
4.2 MainBoard Block Diagram .........................................................................................13
4.3 Power Board Block Diagram......................................................................................14
4.4 Software Flow Chart ..................................................................................................15
5. Circuit Schematic ............................................................................................................................16
5.1 Main Board-715G3244-2-2 ........................................................................................16
5.2 Power Board 715G2510-2-4 ......................................................................................20
5.3 Key Board 715G3098-2-2 ..........................................................................................22
6.Exploded Views................................................................................................................................23
7. PCB Layout......................................................................................................................................24
7.1 MainBoard- 715G3244-2-2 ........................................................................................24
7.2 PowerBoard 715G-2510-2-4......................................................................................25
7.3 KeyBoard 715G3098 2 2 ......................................................................................26
8.Trouble treatment.............................................................................................................................27
8.1 Maintainability Requirement.......................................................................................27
8.2 Trouble Shooting........................................................................................................27
8.3 Software update step（SOP）..................................................................................32
8.4 Writing DDC program step.........................................................................................38
8.5 Factory mode adjustment ..........................................................................................40
9.BOM List............................................................................................................................................41
9.1 Model：T9ANR5NYNNACNNJ..................................................................................41

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1. LCD Specifications
1.1 Product Features
Monitor Model AOC 931SW+
LCD Panel
Driving system TFT Color LCD
Active Display Area 481mm（19inch）diagpnal
408.24mm (W)×255.15mm(H)
Pixel Pitch 0.2835 mm×0.2835mm
Input
Video
R,G,B Analog Interface，75ohm,0.7V Positive
Separate Sync. H/V TTL
H-Frequency 30kHz—83kHz
V-Frequency 55Hz--75Hz
Input Connector
D-Sub 15pin
Display Colors 16.7M Colors
Dot Clock 135MHz
Max. Resolution 1440 x 900@75Hz
Plug & Play VESA DDC2B DDC/CI
Power Consumption
ON Mode <37W
Power Saving Mode <1W
Switch OFF <1W
Power Source 90~264VAC,47~63Hz, 1.5A Max supply current
Environmental
Considerations
Operating Temp: 0° to 40°C
Storage Temp.: -20° to 60°C
Operating Humidity : 5% to 80%
Dimensions(including stand) 439(W)x210(H)x358(D)mm
Weight (N. W.): 3.8kg
Safety CCC

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1.2 Factory preset modes
STANDARD RESOLUTION HORIZONTAL
FREQUENCY VERTICAL FREQUENCY
VGA
640×480 31.469kHz 59.94Hz
640×480 35.00kHz 66.66Hz
640×350 37.861kHz 72.80Hz
640 × 480 37.50kHz 75.00Hz
DOS-mode
640 × 480 31.469kHz 70.087Hz
720 × 400 31.469kHz 70.087Hz
Mac-mode 832 ×624 49.725kHz 74.50Hz
SVGA
800 × 600 35.16kHz 56.25Hz
800 × 600 37.879kHz 60.317Hz
800 × 600 48.07kHz 72.188Hz
800 × 600 46.875kHz 75Hz
XGA
1024 × 768 48.363kHz 60Hz
1024 × 768 56.476kHz 70.069Hz
1024 × 768 57.50kHz 72.074Hz
1024 × 768 60.023kHz 75.029Hz
1024 × 768 60.241kHz 74.927Hz
1440 × 900 55.93kHz 60Hz
WSXGA 1440 × 900 70.635kHz 75Hz
1.3 VGA Interface description
15
610
11 15
Pin No. Description Pin No. Description
1. Red Input 9. +5VDC
2. Green Input 10. GND
3. Blue Input 11. GND
4. GND 12. SDA
5. Connection detect 13. H Sync
6. Red GND 14. V Sync
7. Green GND 15. SCL
8. Blue GND

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2. Operation instruction
Generalization
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 video card of PC to the monitor.
Press the power button to turn on the monitor, the power indicator will light up.
2.1 Control Buttons
Control Description
1 ECO mode(DCR)/ -
If there is no OSD,select the ECO mode of brightness and
DCR.
OSD, it will decrease current value of bar, or it will move to
last item of menu.
2 4:3 or wide/ +
If there is no OSD,chang 4:3 or wide image ratio.
OSD, increase current value of bar, or move to next item of
menu
3 Power Button Power ON/OFF,and power indicator(Blue and Orange).
4 Auto / Exit
If there is no any OSD, it is auto configuration.
Exit current OSD and return to last level.
5 Menu / Enter
Active main menu while no OSD display,enter next level on
main menu or sub menu status, or enter last level on
adjustment bar..

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2.2 OSD User mode adjustment
a) OSD Menu adjustment steps:
1.Press MENU button to display OSD main menu of as below, Press Left button or Right button may select other
main Menu.
2. Press MENU button to adjust items of each main menu.
3. Press Left button or Right button may select item you wish to enter.
4. Press MENU button to enter, and press Left button or Right button to adjust item you select.
5. Press EXIT button may back previous menu.
6. Repeat steps 2-5 to adjust an additional item, or select the EXIT button to return to previous menu.
Sub-menu:

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Function Control Illustration
Luminance
A
djust Range Description
Brightness 0-100 Backlight Adjustment
Contrast 0-100 Contrast from Digital-register.
Eco mode
Standard
Standard Mode
Text
Text Mode
Internet
Internet Mode
Game
Game Mode
Movie
Movie Mode
Sports
Sports Mode
Gamma
Gamma1
A
djust to Gamma1
Gamma2
A
djust to Gamma 2
Gamma3
A
djust to Gamma 3
DCR
Off
Disable dynamic contrast ratio
On
Enable dynamic contrast ratio
Image Setup
Clock 0-100
A
djust picture Clock to reduce
Vertical-Line noise.
Phase 0-100
A
djust Picture Phase to reduce
Horizontal-Line noise
H.Position 0-100
A
djust the horizontal position of the
picture.
V.Position 0-100
A
djust the verticalposition of the
picture.
Color Temp.
Warm 6500K
Recall Warm Color Temperature from
EEPROM.
Normal 7300K
Recall Normal Color Temperature from
EEPROM.
Cool 9300K
Recall Cool Color Temperature from
EEPROM.
sRGB
Recall SRGB Color Temperature from
EEPROM.

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User
Red Red Gain from Digital-register
Green Green Gain Digital-register.
Blue Blue Gain from Digital-register
Color Boost
Full Enhance on or off Disable or Enable Full Enhance Mode
Nature Skin on or off Disable or Enable Nature Skin Mode
Green Field on or off Disable or Enable Green Field Mode
Sky-blue on or off Disable or Enable Sky-blue Mode
A
utoDetect on or off Disable or Enable AutoDetect Mode
Demo on or off Disable or Enable Demo
Picture Boost
Frame Size 14-100
A
djust Frame Size
Brightness 0-100
A
djust Frame Brightness
Contrast 0-100
A
djust Frame Contrast
H. position 0-100
A
djust Frame horizontal Position
V.position 0-100
A
djust Frame vertical Position
Bright Frame on or off Disable or Enable Bright Frame
OSD Setup
H.Position 0-100
A
djust the horizontal position of OSD
V.Position 0-100
A
djust the vertical position of OSD
Timeout 5-120
A
djust the OSD Timeout
Transparence 0-100
A
djust the transparence of OSD
Language Select the OSD language
Extra
Input Select D-Sub Select Analog Sigal Source as Input
A
uto Config yes or no
A
uto adjust the picture to default
Image Ratio wide or 4:3 Select wide or 4:3 format for display
DDC/CI yes or no Turn ON/OFF DDC/CI Support
Information
Show the information of the main
image and sub-image source
Reset
Reset yes or no Reset the menu to default
Exit
Exit Exit the main OSD
2.3 OSD Lock Function
Press “menu” and hold,with turn on “Power”, the OSD menu is locked. Again, the OSD menu is non-locked.
For the OSD menu function ,Please refer to “user manual” .

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3. Panel Feature
The Panel- TPM190A1-WX108TC is a 19 inch wide TFT-LCD module with LED Backlght unit and a 30-pin 2ch
–LVDS interface . This module supports 1400×900 WXGA mode and displays up to 16.7 millions colors.The converter
module for the Backlight Unit is not built in.
3.1 General Specifications
3.2 Electrical Absolute Ratings