AOC 913FW Schematic

19" LCD Color Monitor

AOC 913Fw

Service

Service

Service

Horizontal Frequency 30-80 kHz

TABLE OF CONTENTS

Description Page

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

Description

Page

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

4.1.Input Signal Connector............………….................8 8.2.Trouble Shooting………........................................28

4.2.Factory Preset Display Modes......….................. 8 9. White-Balance, Luminance adjustment………..…...34

4.3.Panel Specification.....………………..................9 10. Monitor Exploded View…………………….…........36

5. Block Diagram….........................................................11

5.1 Software Flow Chart………………………….……….11 5.2.Electrical Block Diagram…………………….......13

11.BOM List…............................................................37

12.Different Parts List.........…………..........................49

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 TRANSFOMER FOR THIS UNIT WHEN SERVICING

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

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19" LCD Color Monitor			AOC 913Fw
Monitor Specification
		Model number	913Fw
		Driving system	TFT Color LCD
		Viewable Image Size	481mm diagonal
	LCD Panel	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
		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)
	Resolution	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
		Power Consumption
			Standby ≤1W
		Connector Type	15-pin Mini D-Sub
		Signal Cable Type	Detachable
		Dimensions & Weight:
	Physical	Height (with base)	360 mm
	Characteristics
		Width	444 mm
		Depth	35 mm
		Weight (monitor only)	3.56 kg
		Weight (with packaging)	4.57 kg
		Temperature:
		Operating	0° to 35°
		Non-Operating	-20°to 60°
		Humidity:
	Environmental
		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 )

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19" LCD Color Monitor

AOC 913Fw

2. LCD Monitor Description

The LCD Monitor will contain main board, power board, 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.

Monitor Block Diagram

	CCFT Drive.	Flat Panel and
		CCFL backlight

Power Board			Main Board
								RS232 Connector
(Include adapter and inverter)
								For white balance
								adjustment in
								factory mode
			Key board
AC-IN								Video signal, DDC
					HOST Computer
100V~240V

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19" LCD Color Monitor

AOC 913Fw

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.

3.2Control Buttons

1.Auto Config

2.Eco Mode/ down

3.Power Button & Indicator

4.Up

5.Menu / Enter

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19" LCD Color Monitor

AOC 913Fw

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

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19" LCD Color Monitor

AOC 913Fw

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19" LCD Color Monitor

AOC 913Fw

4. Input/Output Specification

4.1 Input Signal Connector

D-Sub mini 15pin Connector

4.2 Factory Preset Display Modes

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19" LCD Color Monitor

AOC 913Fw

4.3. Panel Specification

4.3.1 General Feature

4.3.2 Optical Characteristics

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19" LCD Color Monitor

AOC 913Fw

4.3.3 Electrical Characteristics

TFT Module

Back-light

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19" LCD Color Monitor

AOC 913Fw

5. Block Diagram

5.1 Software Flow Chart

1

Y

2 3

N

4

5	N
Y
6

N

7 8

Y

9

	10	N	11
	Y
N	12		13	N
	Y		Y
	14		15	N
				16
			Y
			17

18 N 19

Y

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19" LCD Color Monitor

AOC 913Fw

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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19" LCD Color Monitor

AOC 913Fw

5.2 Electrical Block Diagram

Main Board

Keypad Interface

(CN403)

SDA

SCL

Flash Memory PM25LV010A (U402)

Panel Interface

(CN7)

Scalar TSUM17AWK-LF-1

(Include MCU, ADC, OSD)

(U408)

H sync

V sync Crystal RGB

14.31818MHZ

(X401)

D-Sub

Connector (CN405)

VGA_SDA,

VGA_SCL

EEPROM

M24C02-WMN6TP (U404)

EEPROM M24C04 (U403)

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19" LCD Color Monitor

AOC 913Fw

Power Board

5V Rectifier

and Filter

Transformer

Bridge

EMI filter

Rectifier and

T901

12V Rectifier

Filter

and Filter

Start Circuit: R904 R932 R933

CN902

5V

PWM Control IC

Over

Feedback

IC TEA1530AT

Voltage

Circuit

12V

Protect

ON/OFF

Output

Transformer

MOSFET

Q802,Q803

Lamp

Circuit

Feedback

PWM Control

ON/OFF Control

Over

Circuit

IC TL494IDR

Voltage

Q805/Q808

Protect

DIM Control

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19" LCD Color Monitor

AOC 913Fw

6. Schematic

6.1 Main Board

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19" LCD Color Monitor

AOC 913Fw

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