AOC 913FW User manual

19" LCD Color Monitor AOC 913Fw
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Service
Service
Service
HorizontalFrequency
30-80kHz
TABLE OF CONTENTS
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 Instructions....................................…...........5
3.1. General Instructions...........................…....................5
3.2. Control Button…………………………….…...............5
3.3 Adjusting the Picture...........................…..............6
4. Input/Output Specification............……………............8
4.1. Input Signal Connector............………….................8
4.2. Factory Preset Display Modes......….................. 8
4.3. Panel Specification.....………………..................9
5. Block Diagram….........................................................11
5.1 Software Flow Chart………………………….……….11
5.2.Electrical Block Diagram…………………….......13
6. Schematic……………..............................................15
6.1 Main Board....……….............................................15
6.2 Power Board………………………………………....19
7. PCB Layout..………….............................................21
7.1. Main Board………................................................21
7.2. Power Board….....................................................24
7.3. Key Board….........................................................26
8. Maintainability………...............................................27
8.1.Equipments and Tools Requirement......................27
8.2.Trouble Shooting………........................................28
9. White-Balance, Luminance adjustment………..…...34
10. Monitor Exploded View…………………….…........36
11. BOM List…............................................................37
12. Different Parts List.........…………..........................49
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING

19" LCD Color Monitor AOC 913Fw
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Revision List
Version Date Revision History TPV Model Name
A00 Nov.-14-07 Initial release T97MMBNDLWA4NNE
T972MBNCLWA1NNE
A01 Dec.-13-07 Add TPVDW Model in Item 12
T97MMBNKLWA1NNE
T97MMBNQLWA17NE
A02 Jan.-16-08 Add TPVDW Model in Item 12
T97MMBNQLWA27NE

19" LCD Color Monitor AOC 913Fw
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Monitor Specification
Model number 913Fw
Driving system TFT Color LCD
Viewable Image Size 481mm diagonal
Pixel pitch 0.285mm(H) x 0.285mm(V)
Video R, G, B Analog interface
Separate Sync. H/V TTL
Display Color 16.2 million Colors
LCD Panel
Dot Clock 135 MHz
Horizontal scan range 30 kHz - 80 KHz
Horizontal scan Size(Maximum) 427.7mm
Vertical scan range 55 Hz - 75 Hz
Vertical scan Size(Maximum) 277.9mm
Optimal preset resolution 1440 x 900 (60 Hz)
Highest preset resolution 1440 x 900 (75 Hz)
Plug & Play VESA DDC2B/CI
Input Connector D-Sub 15pin
Input Video Signal Analog: 0.7Vp-p(standard), 75 OHM, Positive
Power Source 100~240VAC, 47~63Hz
Active ≤37W
Resolution
Power Consumption Standby ≤1W
Connector Type 15-pin Mini D-Sub
Signal Cable Type Detachable
Dimensions & Weight:
Height (with base) 360 mm
Width 444 mm
Depth 35 mm
Weight (monitor only) 3.56 kg
Physical
Characteristics
Weight (with packaging) 4.57 kg
Temperature:
Operating 0° to 35°
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 )
Environmental
Non-Operating 0~ 5000m (0~ 15000 ft )

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2. LCD Monitor Description
The LCD Monitor will contain main board, power board, key board which house the flat panel control logic,
brightnesscontrollogicandDDC.
The power board will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips
each voltage.
Video signal, DDC
Power Board
(
Include ada
p
ter and inverter
)
Flat Panel and
CCFL backlight
Main Board RS232 Connector
For white balance
adjustment in
factory mode
HOST Computer
CCFT Drive.
AC-IN
100V~240V
Monitor Block Diagram
Key board

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3. Operation Instructions
3.1 General Instructions
Press the power button to turn the monitor on or off. The 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. Auto Config
2. Eco Mode/ down
3. Power Button & Indicator
4. Up
5. Menu / Enter

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3.3 Adjusting the Picture
OSD Settings
•Press the MENU-button to activate the OSD window.
•Press+ or - to navigate through the functions. Once the desired function is highlighted, press the
MENU-button to activate it. If the function selected has a sub-menu, press or again to navigate through the
sub-menu functions. Once the desired function is highlighted, press MENU-button to activate it.
•Press+ or - to change the settings of the selected function. To exit and save, select the exit function. If you
want to adjust any other function, repeat steps 2-3.
•OSD Lock Function: To lock the OSD, press and hold the MENU 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 MENU button while the
monitor is off and then press power button to turn the monitor on.
•Press Exit key continually for 7 sec. to turn on or off DDC-CI.
OSD functions

19" LCD Color Monitor AOC 913Fw
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4. Input/Output Specification
4.1 Input Signal Connector
D-Sub mini 15pin Connector
4.2 Factory Preset Display Modes

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4.3. Panel Specification
4.3.1 General Feature
4.3.2 Optical Characteristics

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4.3.3 Electrical Characteristics
TFT Module
Back-light

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5. Block Diagram
5.1 Software Flow Chart
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
N
16
17
19
Y
N
18

19" LCD Color Monitor AOC 913Fw
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REMARK:
1) MCU initialize.
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 initialize.
10) In standby mode?
11) Update the lifetime of back light.
12) Check the analog port, are they’re 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?

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5.2 Electrical Block Diagram
Main Board
Flash Memory
PM25LV010A
(U402)
Panel Interface
(CN7)
SDA
SCL
Crystal
14.31818MHZ
(X401)
Keypad Interface
(CN403)
Scalar TSUM17AWK-LF-1
(Include MCU, ADC, OSD)
(U408)
D-Sub
Connector
(CN405)
EEPROM
M24C02-WMN6TP
(U404)
H sync
V sync
RGB
VGA_SDA,
VGA_SCL
EEPROM
M24C04
(U403)

19" LCD Color Monitor AOC 913Fw
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Power Board
CN902
EMI filter
Bridge
Rectifier and
Filter
PWM Control IC
IC TEA1530AT
Transformer
T901
Over
Voltage
Protect
5V Rectifier
and Filter
ON/OFF Control
Q805/Q808
PWM Control
IC TL494IDR
Feedback
Circuit
Output
Circuit
Transformer
MOSFET
Q802,Q803
Lamp
ON/OFF
DIM Control
Feedback
Circuit
12V
Start Circuit: R904，R932，R933
Over
Voltage
Protect
5V
12V Rectifier
and Filter

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6. Schematic
6.1 Main Board

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6.2 Power Board

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