AOC 919SZ, 919PZ, 919VZ, 919S User Manual

19" LCD Color Monitor

AOC 919Pz&919Sz&919Vz

Service

Service

Service

919Pz

919Sz&919Vz

Horizontal Frequency

30-80 KHz

Table of Contents

Description		Page
Table of Contents.......……..............................……........1
Revision	List.…........................................…………........2
Important	Safety	Notice.……............................……......3
1.Monitor	Specification..............................………..........4

2.LCD Monitor Description……………………………......6

3.Operation Instruction…………...............……..............7

3.1.General Instructions...........................…...................7

3.2.Control Button…………….…..............……...............7

3.3.OSD Menu…………….…...........................…...........9 4.Input/Output Specification............……………............13 4.1.Input Signal Connector............………….................13

4.2.Factory Preset Display Modes…….........................14

4.3.Panel Specification.....………...…………................15

5.Block Diagram…….....................………….................17

5.1.Main Board…….…………...………………....….......17

Description Page

5.2.Power Board……………..……………...….......18

6.Schematic……………........................................19 6.1.Main Board………...........................................19 6.2.Power Board...…….........................................23 6.3.Key Board...…….............................................26

7.PCB Layout..………….......................................27 7.1.Main Board………...........................................27 7.2.Power Board…...............................................30

7.3.Key Board…………….....................................32 8.Maintainability……….........................................33 8.1.Equipments and Tools Requirement...............33 8.2.Trouble Shooting…………..............................34

9.White-Balance, Luminance Adjustment.............38 10.Monitor Exploded View………..…….…............40 11.BOM List…………………………………............44

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

Revision List

	Version	Release Date	Revision History	Customer Model	TPV Model Name
				919Pz	T9AHMJDBK1K3DN
					T9AHMJDMKASDDN
	A00	Sep.16.2010	Initial release	919Sz	T9AHMJDBK1KPAN
					T9AHMJDMK1SDAN
				919Vz	T9AHMJDBK1K2DN
					T9AHMJDLK13ADN
	A01	Nov.08.2010	Add new model	919Vz	T9AHMJDTKA1RDN
	A02	Dec.02.2010	Add new model	919Vz	T9AHMJDLK13ADN
				919Pz	T9AGMJDBKNK3DN
	A03	Dec.14.2010	Add new models	919Sz	T9AGMJDBKMKPAN
				919Vz	T9AGMJDBKMK2DN
	A04	Jan.18.2011	Add new model	919Vz	T9AGMJDEKM6ADN
	A05	Jan.27.2011	Add new model	919Vz	T9AHMJDEK16ADN
	A06	Mar.29.2011	Add new model	919Vz	T9AGSODLKM3ADN
				919PZ	T9BMSODBKNK3DN
					T9AGSODEKMACDN
	A07	Jul.20, 2011	Add new models	919Vz	T9BMSODBKAK2DN
					T9BMSODEKM6ADN
					T9BMSODLKM3ADN
	A08	Sep.15.2011	Add new model	919SZ	T9BMSODBKMKPAN
	A09	Nov.18,2011	Add new models	919VZ	T9BMSODTKM1RDN
				919VZ	T9AGMJDBKMK2D6
				2

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.)

3

1. Monitor Specifications

		Model number	919Pz
		Driving system	TFT Color LCD
		Viewable Image Size	48.3cm diagoanl
	LCD Panel	Pixel pitch	0.294mm(H) x 0.294mm(V)
		Video	R, G, B Analog lnterface & Digital Interface
		Separate Sync.	H/V TTL
		Display Color	16.7M Colors
		Dot Clock	135 MHz
		Horizontal scan range	30 kHz - 80 kHz
		Horizontal scan Size(Maximum)	376.32mm
		Vertical scan range	55 Hz - 75 Hz
		Vertical scan Size(Maximum)	301.056mm
		Optimal preset resolution	1280 x 1024 (60 Hz)
		Highest preset resolution	1280 x 1024 (75 Hz)
	Resolution	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 <1 W
		Speakers	2 x 1W
		Connector Type	15-pin Mini D-Sub & DVI-D
		Signal Cable Type	Detachable
		Dimensions & Weight:
	Physical	Height (with base)	415 mm
	Characteristics	Width	409 mm
		Depth	250 mm
		Weight (monitor only)	5.72 kg
		Weight (with packaging)	7.37 kg
		Temperature:
		Operating	0° to 40°
		Non-Operating	-25° to 55°
		Humidity:
	Environmental	Operating	10% to 85% (non-condensing)
		Non-Operating	5% to 93% (non-condensing)
		Altitude:
		Operating	0~ 3658m (0~ 12000 ft )
		Non-Operating	0~ 12192m (0~ 40000 ft )

4

		Model number	919Sz&919Vz
		Driving system	TFT Color LCD
		Viewable Image Size	48.3cm diagoanl
		Pixel pitch	0.294mm(H) x 0.294mm(V)
	LCD Panel	Video	R, G, B Analog lnterface (for 919Sz)
			R, G, B Analog lnterface & Digital Interface(for 919Vz)
		Separate Sync.	H/V TTL
		Display Color	16.7M Colors
		Dot Clock	135 MHz
		Horizontal scan range	30 kHz - 80 kHz
		Horizontal scan Size(Maximum)	376.32mm
		Vertical scan range	55 Hz - 75 Hz
		Vertical scan Size(Maximum)	301.056mm
		Optimal preset resolution	1280 x 1024 (60 Hz)
		Highest preset resolution	1280 x 1024 (75 Hz)
		Plug & Play	VESA DDC2B/CI
	Resolution	Input Connector	D-Sub 15pin (for 919Sz)
			D-Sub 15pin & DVI-D (for 919Vz)
			Analog: 0.7Vp-p(standard), 75 OHM (for 919Sz)
		Input Video Signal	Analog: 0.7Vp-p(standard), 75 OHM, Positive & DVI-D
			Digital Interface (TMDS) (for 919Vz)
		Power Source	100~240VAC, 50/60Hz
		Power Consumption	Active < 37 W
			Standby < 1 W
		Speakers	2 x 1W
		Connector Type	15-pin Mini D-Sub & DVI-D (DVI-D for 919Vz)
		Signal Cable Type	Detachable
		Dimensions & Weight:
	Physical	Height (with base)	409.5 mm
	Characteristics	Width	409 mm
		Depth	210 mm
		Weight (monitor only)	3.78 kg
		Weight (with packaging)	5.32 kg
		Temperature:
		Operating	0° to 40°
		Non-Operating	-25°to 55°
		Humidity:
	Environmental	Operating	10% to 85% (non-condensing)
		Non-Operating	5% to 93% (non-condensing)
		Altitude:
		Operating	0~ 3658m (0~ 12000 ft )
		Non-Operating	0~ 12192m (0~ 40000 ft )
			5

2. LCD Monitor Description

The LCD monitor will contain a main board, a power 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.

Monitor Block Diagram

		CCFL Drive.
				Flat Panel and
				CCFL backlight
Power Board			Main Board						RS232 Connector
(Include: adapter, inverter, audio)									For white balance
									adjustment in factory
									mode
			Key Board
	AC-IN							Video signal, DDC
						HOST Computer
	100V-240V

6

3. Operating Instructions

3.1 General Instructions

Press the power button to turn the monitor on or off. The other control knobs 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.

*Press the power button to turn on the monitor. The power indicator will light up.

3.2 Control Buttons

For 919Pz

1 Source(Auto) / Exit

2 Eco mode / -

3.Volume / +

4.Menu / Enter

5.Power Button & Indicator

7

For 919Sz&919Vz

1 Source(Auto) / Exit

2 Eco mode / -

3.Volume / +

4.Menu / Enter

5.Power Button & Indicator

8

3.3OSD Menu

•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.

•Eco Mode hot key: Press the Eco key continuously to select the Eco mode of brightness when there is no OSD (Eco mode hot key may not be available in all models).

•Volume adjustment hot key: When there is no OSD, press Volume (+) to active volume adjustment bar, press - or + to adjust volume (Only for the models with speakers).

•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.

9

Function Control Illustration

	Luminance	Adjust Range		Description
	Brightness	0-100		Backlight Adjustment
	Contrast	0-100		Contrast from Digital-register.
		Standard		Standard Mode
		Text		Text Mode
	Eco mode
		Internet		Internet Mode
		Game		Game Mode
		Movie		Movie Mode
		Sports		Sports Mode
		Gamma1		Adjust to Gamma1
	Gamma
		Gamma2		Adjust to Gamma 2
		Gamma3		Adjust to Gamma 3
		Off		Disable dynamic contrast ratio
	DCR
		On		Enable dynamic contrast ratio
	Image Setup
	Clock	0-100		Adjust picture Clock to reduce
				Vertical-Line noise.
	Phase	0-100		Adjust Picture Phase to reduce
				Horizontal-Line noise
	H.Position	0-100		Adjust the vertical position of the
				picture.
			10

	V.Position		0-100		Adjust the horizontal position of
					the picture.
	Color Temp.
	Warm				Recall Warm Color Temperature
			6500K		from EEPROM.
	Normal				Recall Normal Color
			7300K		Temperature from EEPROM.
	Cool				Recall Cool Color Temperature
			9300K		from EEPROM.
	sRGB				Recall SRGB Color Temperature
					from EEPROM.
			Red		Red Gain from Digital-register
	User		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
	AutoDetect		on or off		Disable or Enable AutoDetect
					Mode
	Demo		on or off		Disable or Enable Demo
	Picture Boost
	Frame Size		14-100		Adjust Frame Size
	Brightness		0-100		Adjust Frame Brightness
	Contrast		0-100		Adjust Frame Contrast
	H. position		0-100		Adjust Frame horizontal Position
	V.position		0-100		Adjust Frame vertical Position
	Bright Frame		on or off		Disable or Enable Bright Frame
	OSD Setup
	H.Position		0-100		Adjust the vertical position of
					OSD
	V.Position		0-100		Adjust the horizontal position of
				11

				OSD
	Timeout		5-120	Adjust the OSD Timeout
	Transparence		0-100	Adjust the transparence of OSD
	Language			Select the OSD language
	Extra
			Auto	Select to Auto Detect input signal
			Analog	Select Analog Sigal Source as
	Input Select			Input
			Digital	Select Digital Sigal Source as
				Input
	Auto Config		yes or no	Auto 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
	Off Timer		0~24hours	Select timing to turn off the
				monitor.
	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 functions is turned off accordingly.

12

4. Input/Output Specification

4.1 Input Signal Connector

Analog connector

Pin Number	15-Pin Side of the Signal Cable
1	Video-Red
2	Video-Green
3	Video-Blue
4	N.C.
5	Detect Cable
6	GND-R
7	GND-G
8	GND-B
9	+5V
10	Ground
11	N.C.
12	DDC-Serial data
13	H-sync
14	V-sync
15	DDC-Serial clock

DVI connector (FOR 919Pz&919Vz)

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 -

13

4.2 Factory Preset Display Modes

Stand	Resolution	Horizontal Frequency(kHz)	Vertical Frequency(Hz)
VGA	640×480@60Hz DMT	31.469	59.940
Mac-mode	640×480@67Hz MAC	35.000	66.667
VGA	640×480@72Hz DMT	37.861	72.809
VGA	640×480@75Hz DMT	37.500	75.000
Dos-mode	720×400@70Hz DOS	31.469	70.087
SVGA	800×600@56Hz DMT	35.156	56.250
SVGA	800×600@60Hz DMT	37.879	60.317
SVGA	800×600@72Hz DMT	48.077	72.188
SVGA	800×600@75Hz DMT	46.875	75.000
Mac-mode	832×624@75Hz MAC	49.725	74.500
XGA	1024×768@60Hz DMT	48.363	60.004
XGA	1024×768@70Hz DMT	56.476	70.069
IBM-mode	1024×768@72Hz	57.500	72.074
XGA	1024×768@75Hz DMT	60.023	75.029
Mac-mode	1024×768@75Hz MAC	60.241	74.927
SXGA	1280×1024@60Hz DMT	63.981	60.020
SXGA	1280×1024@75Hz DMT	79.976	75.025

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4.3 Panel Specification

4.3.1 General Features

HannStar Display model HSD190MEN4-A* is a color active matrix thin film transistor (TFT) liquid crystal display (LCD) that uses amorphous silicon TFT as a switching device. This model is composed of a TFT LCD panel, the voltage reference, common voltage, DC-DC converter, column, and row driver circuit. This TFT LCD has a 19-inch diagonally measured active display area with SXGA resolution (1024 vertical by 1280 horizontal pixel array).

4.3.2 Display Characteristics

4.3.3 Electrical Characteristics

TFT LCD Module:

15

Back-Light Unit

4.3.4 Optical Characteristics

16

5. Block Diagram

5.1 Main Board

DVI for 919Pz&919Vz

14.31818MHZ		Panel Interface
(X401)		(CN301)

		Scalar IC TSUMO58QWHL-LF
FLASH ROM
				Key Control Interface
MX25L2026MI
		(Include ADC, OSD, MCU)		(CN401)
(U402)
		(U401)

D-Sub Connector		DVI Connector
(CN101)		(CN102)

17