AOC F19L Building instructions

18.5" LCD Color Monitor AOCF19L
1
Service
Service
Service
Horizontal Frequency
30-80 kHz
TABLEOFCONTENTS
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.
Table Of Contents.......…….................……...........…........1
Revision List.…........................………................……......2
1. Monitor Specification.................................………........3
2.LCD Monitor Description…………………………….......4
3. Operation Instruction…………...................…...........5
3.1 General Instructions.....................................…...........5
3.2 Control Button……………………………..……...........5
3.3 Adjusting the Picture...........................…............5
4. Input/Output Specification............……………............9
4.1 Input Signal Connector............…..……................10
4.2 Factory Preset Display Modes........................10
5 Panel Specification.....…………………........................11
5.1 Display Characteristics………………………………11
5.2 Optical Characteristics………………………………..13
5.3 Parameter guide line for CCFL Inverter……………..15
6.Block Diagram…….…................………….........17
6.1 Software Flow Chat…….…..........………….........17
6.2 Electrical Block Diagram………...………...…......19
7. Schematic……………………………………………. 21
7.1 Main Board…………..............................................21
7.2 Power Board....……………....................................29
8. PCB Layout..………….......................................31
8.1 Main Board……………......................................31
8.2 Power Board…......................................................34
8.3 Key Board……………….....................................36
9. Maintainability……….......................................37
9.1. Equipments and Tools Requirement.....................37
9.2. Trouble Shooting…………....................................38
10.Firmware and DDC Instruction………………….….45
11. White-Balance, Luminance adjustment.................46
12.Monitor Exploded View……..……………............48
13. BOM List....……....................................................49
14.Different Parts List……………………………….…..58
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING

18.5" LCD Color Monitor AOCF19L
2
Revision List
Revision Date Revision History TPV Model
A00 May.-22-2009 Initial release T88AM6NQX8A77NE
A01 Sep.-01-2009
Add new Models in Item 13
T89AM6DQX8A17NE
T89AM6NQX8A27NE
T89MM6NQX8A57NE
Add second Panel List in Item 5 CMO M185B1-L06
A02 Aug.-26-2010
Add new Models
T89AM6NQX8K67NE
T89AM6NQX8K77NE
T8AAM6NQX8A27NE
T8AAM6NQX8A17NE
T89AM6DQX8A47NE
T89MM6NQX8A67NE
Add new Power Board in item8.2 715G2852 2 11
A03 Nov.-01-2010
Add new Models
T8AAM6NQX8A47NE
T8AMM6NQX8A87NE
T8AAM6NQX8K67NE
T8AAM6NQX8R47NE
T8AAM6NQX8R67NE
Add Main Board
(715G3329M01005004S)
T8ACM6NQX8A47NE
T8ACM6NQX8A37NE
T8ACM6NQX8R47NE
T8ACM6NQX8R57NE

18.5" LCD Color Monitor AOCF19L
3
1. Monitor Specifications
LCD Panel
Model name F19L
Driving system TFT Color LCD
Viewable Image Size 470mm diagonal
Pixel pitch 0.3mm(H) x 0.3mm(V)
Video R, G, B Analog lnterface & Digital Interface
Separate Sync. H/V TTL
Display Color 16.7M Colors
Dot Clock 85.5 MHz
Resolution
Horizontal scan range 30 kHz - 80 kHz
Horizontal scan Size(Maximum) 409.8mm
Vertical scan range 55 Hz - 75 Hz
Vertical scan Size(Maximum) 230.4mm
Optimal preset resolution 1360 x 768 (60 Hz) or 1366 x 768 (60 Hz)
Highest preset resolution 1366 x 768 (60 Hz)
Plug & Play VESA DDC2B/CI
Input Connector D-Sub 15pin & DVI-D
Input Video Signal Analog: 0.7Vp-p(standard), 75 OHM, Positive &
DVI-D Digital Interface (TMDS)
Power Source 100-240VAC, 50/60Hz
Power Consumption Active < 37 W
Standby < 2 W
Physical
Characteristics
Connector Type 15-pin Mini D-Sub & DVI-D
Signal Cable Type Detachable
Dimensions & Weight:
Height (with base) 334.3 mm
Width 445.8 mm
Depth 130.1 mm
Weight (monitor only) 3.7 kg
Weight (with packaging) 4.8 kg
Environmental
Temperature:
Operating 0° to 40°
Non-Operating -20°to 60°
Humidity:
Operating 10% to 85% (non-condensing)
Non-Operating 5% to 80% (non-condensing)
Altitude:
Operating 0~ 3000m (0~ 10000 ft )
Non-Operating 0~ 5000m (0~ 15000 ft )

18.5" LCD Color Monitor AOCF19L
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2. LCD Monitor Description
The LCD MONITOR will contain a main board, a power board, an audio 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.
HOST Computer
AC-IN
100V-240V
Power board
(Include: adapter, inverter)
Flat Panel and
CCFL backlight
Main Board RS232 Connector
For white balance
adjustment in factory
mode
CCFL Drive.
Video signal DDC
Monitor Block Diagram
Keyboard

18.5" LCD Color Monitor AOCF19L
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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
1 Eco mode(DCR) / 4 4:3 or wide /
2 Source(Auto) / 5 Menu / Power
3 Contrast /
3.3 Adjusting the Picture
•Press the Menu (Power) button to activate the OSD window. Press left, right, up, down button to navigate
through the functions. Once the desired function is highlighted, press the Menu (Power) button to activate
sub-menu .
•In sub-menu, Press up, down button to navigate through the functions. Once the desired function is
highlighted, press , button to button to change the setting. Press Menu (Power) button to return to
superior menu.
•If you want to adjust any other function, repeat steps 1-2.
•To exit OSD windows, select “exit” icon on main OSD, then press the Menu (Power) button .
•OSD Lock Function: To lock the OSD, press and hold the Left button while the monitor is off and then press
power button to turn the monitor on. To un-lock the OSD - press and hold the Left button while the monitor is
off and then press power button to turn the monitor on.
•Eco Mode and DCR hot key : Press the Eco key continuously to select the Eco mode of brightness and DCR
on when there is no OSD ( Eco mode hot key may not be available in all models).
•Contrast adjustment hot key : When there is no OSD , press Contrast ( ) to active Contrast adjustment bar,
press or to adjust Contrast.
•4:3 or wide image ratio hot key: When there is no OSD, press continuously to change 4:3 or wide image
ratio. (If the product screen size is 4:3 or input signal resolution is wide format, the hot key is disalbe to
adjust.)
•Source hot key : When the OSD is closed, press Auto/Source button will be Source hot key function (Only
for the models with dual or more inputs) .Press Source button continuously to select the input source
showed in the message bar , press Menu/Enter button to change to the source selected.
•Auto configure hot key: When the OSD is closed, press Auto/Source button continuously about 2 second to
do auto configure.
•Press the Power button continuously about 2 second to turn off the monitor.

18.5" LCD Color Monitor AOCF19L
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Full Enhance: When "Full Enhance" is turned on, the color saturation of the entire screen is fully enriched, thus all
colors become more vibrant.
Nature Skin: When "Natural Skin" is turned on, the red and yellow colors are enriched automatically, thus
presents human skin with more natural and truer colors. "Natural Skin" setting is ideal for viewing
human portrait and detailed skin texture.
Green Field: When "Green Field" is turned on, the green color is enriched so that football field and mountain
landscape would look more natural and fresh. “Green Field” setting is ideal for watching mountain
scenery and outdoor sports.
Sky Blue: When"Sky Blue" is turned on, the color blue is being fine-tuned so that the sky or ocean landscape will
look more vivid and in-depth. "Sky Blue" setting is ideal for viewing sky and ocean images.
Auto Detect: When “Auto Detect” is turned on, every pigment will be detected and self-adjusted to render a lively
picture.
Demo: Screen divided into two for demonstration purposes.
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 Mode

18.5" LCD Color Monitor AOCF19L
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Movie
Sports
Sports Mode
Gamma
Gamma1
A
djust to Gamma1
Gamma2
A
djust to Gamma 2
Gamma3
A
djust to Gamma 3
DCR
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.
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

18.5" LCD Color Monitor AOCF19L
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Input Select
A
uto Select to Auto Detect input signal
A
nalog Select Analog Sigal Source as Input
Digital Select Digital 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
Notes:
1)If the product has only one signal input, the item of "Input Select" is disable to adjust.
2)If the product screen size is 4:3 or input signal resolution is wide format, the item of "Image Ratio" is disalbe to adjust.
3)One of DCR, Color Boost, and Picture Boost functions is active, the other two function is turned off accordingly.
LED Indicators
Status LED Color
Full Power Mode Green or Blue
Active-off Mode Orange or red

18.5" LCD Color Monitor AOCF19L
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4. Input/Output Specification
4.1 Input Signal Connector
4.1.1 D-SUB connector
PIN NO. DESCRIPTION PI N NO. DESCRIPTION
1 Video-Red 9 +5V
2 Video-Green 10 Ground
3 Video-Blue 11 N.C.
4 N.C. 12 DDC-Serial data
5 Detect Cable 13 H-sync
6 GND-R 14 V-sync
7 GND-G 15 DDC-Serial clock
8 GND-B
4.1.2 DVI connector
Pin No. Signal Name Pin No. Signal Name Pin No. Signal Name
1 TMDS Data 2- 9 TMDS Data 1- 17 TMDS Data 0-
2 TMDS Data 2+ 10 TMDS Data 1+ 18 TMDS Data 0+
3 TMDS Data 2/4 Shield 11 TMDS Data 1/3 Shield 19 TMDS Data 0/5 Shield
4 TMDS Data 4- 12 TMDS Data 3- 20 TMDS Data 5-
5 TMDS Data 4+ 13 TMDS Data 3+ 21 TMDS Data 5+
6 DDC Clock 14 +5V Power 22 TMDS Clock Shield
7 DDC Data 15 Ground(for+5V) 23 TMDS Clock +
8 N.C. 16 Hot Plug Detect 24 TMDS Clock

18.5" LCD Color Monitor AOCF19L
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4.2 Factory Preset Display Modes
Standard Resolution Horizontal
Frequency (kHz)
Vertical
Frequency (Hz)
VGA
640 x 480 @60Hz 31.469 59.94
640 x 480 @72Hz 37.861 72.809
640 x 480 @75Hz 37.5 75
Dos-mode 720 x 400 @70Hz 31.469 70.087
SVGA
800 x 600 @56Hz 35.156 56.25
800 x 600 @60Hz 37.879 60.317
800 x 600 @72Hz 48.077 72.188
800 x 600 @75Hz 46.875 75
Mac-mode 832 x 624 @75Hz 49.725 74.5
XGA
1024 x 768 @60Hz 48.363 60.004
1024 x 768 @70Hz 56.476 70.069
1024 x 768 @72Hz 57.5 72.074
1024 x 768 @75Hz 60.023 75.029
1024 x 768 @75Hz 60.241 74.927
WSXGA 1366 x 768 @60Hz 47.765 59.85

18.5" LCD Color Monitor AOCF19L
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5 Panel Specification
5.1 Display Characteristics
M185XW01
M185B1-L06

18.5" LCD Color Monitor AOCF19L
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CLAA185WA03

18.5" LCD Color Monitor AOCF19L
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5.2 Optical Characteristics
M185XW01
M185B1-L06

18.5" LCD Color Monitor AOCF19L
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CLAA185WA03
(Ta=25℃,VCC=5.0V)

18.5" LCD Color Monitor AOCF19L
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5.3 Parameter guide line for CCFL Inverter
1.TFT LCD Module:
M185XW01
M185B1-L06
CLAA185WA03
(Ta=25℃)

18.5" LCD Color Monitor AOCF19L
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2.Back Light Unit:
M185XW01
M185B1-L06
CLAA185WA03

18.5" LCD Color Monitor AOCF19L
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6. Block Diagram
6.1 Software Flow Chat
1
2
N
Y
5
Y
N
10
Y
N
12
Y
N
7
Y
N
6
4
3
8
9
14
11
13
Y
N
15
Y
N16
17
19
Y
N
18

18.5" LCD Color Monitor AOCF19L
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REMARK:
1) MCU initialize.
2) Is the EPROM blank?
3) Program the EPROM by default values.
4) Get the PWM value of brightness from EPROM.
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 EPROM.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
disappear.
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?

18.5" LCD Color Monitor AOCF19L
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6.2 Electric Block Diagram
6.2.1 Main Board
715G2883 1 6
715G3329M01005004S
FLASH MEMORY
SST25LF020A
(U402)
Scalar TSUM5PFHL-LF
(Include :MCU,ADC,OSD etc)
(U401)
LCD Interface
(CN302)
D-Sub
Connector
(CN101)
H sync
V sync
RGB
EEPROM
M24C04-WMN6TP
(U403)
DVI
Connector
(CN102)
DVI
Input signal
Scalar TSUM5PFHL-LF
(Include :MCU,ADC,OSD etc)
(U401)
Panel Interface
(CN302 )
Key Control
Interface
(CN401 )
FLASH ROM
EN25F20
(U402)
D-Sub Connector
(CN101)
DVI Connector
(CN102)
Crystal
14.31818MHz
(X401)
Power Interface
(CN701)
EEPROM
AT24C02BN
(U101)
EEPROM
AT24C02BN
(U102)

18.5" LCD Color Monitor AOCF19L
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6.2.2 Inverter / Power Board
EMI filter
Bridge
Rectifier
and Filter
Start Circuit: R905、R906、
R907、R908、R909、R910
PWM
Control IC
Transformer
Over
Voltage
Protect
Rectifier
diode
AC input
5V
12V
ON/OFF Control
PWM
Control IC
Feedback
Circuit
OSC and
Output
Circuit
DC Convert
Circuit MOSFET
Over Voltage
Protect
Lamp
ON/OFF
DIM
CN902
PWM
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