AOC F1503 Service Manual

HP Mannequin (f1503) Service Manual

SERVICE MANUAL

15” LCD Monitor

f1503

P/N:

THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY. EVERY REASONABLE EFFORT HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOT GUARANTEE THE ACCURACY OF THIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RELIABILITY FOR CHANGES, ERRORS OR OMISSIONS.

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HP Mannequin (f1503) Service Manual

I. Revision List

Revision	Date	Change Description

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		HP Mannequin (f1503) Service Manual
	II. Table of Contents
I. Revision List .............................................................................................................................		2
II. Table of Contents ....................................................................................................................		3
1. MONITOR SPECIFICATIONS ............................................................................................		5
2. LCD MONITOR DESCRIPTION.........................................................................................		6
3. OPERATING INSTRUCTIONS............................................................................................		7
3.1	General Instructions .............................................................................................................................	7
3.2	Control Buttons ....................................................................................................................................	7
3.3 Adjust The Picture ................................................................................................................................		8
4. Input/Outpt Specification .......................................................................................................		9
4.1	Input Signal Connector..........................................................................................................................	9
	4.1.1 Analog D-SUB Connector.............................................................................................................	9
4.2	Factory Preset Display Modes.............................................................................................................	10
4.3	Power Supply Requirements ................................................................................................................	11
	4.3.1 Input Requirements .....................................................................................................................	11
	4.3.2 Output Requirements...................................................................................................................	11
4.4 PANEL SPECIFICATION (Hannstar )..............................................................................................		12
	4.4.1 Panel Feature ...............................................................................................................................	12
	4.4.2 Display Characteristics................................................................................................................	12
	4.4.3 Optical Characteristics.................................................................................................................	12
	4.4.4 Parameter guide line for CCFL Inverter......................................................................................	13
5. Block Diagram .......................................................................................................................		14
5.1	Monitor Exploded View .......................................................................................................................	14
	5.1.1 f1503............................................................................................................................................	14
	5.1.2 f1503............................................................................................................................................	15
5.2	Software Flow Chart ............................................................................................................................	16
5.3	Electrical Block Diagram.....................................................................................................................	17
	5.3.1 Main Board..................................................................................................................................	17
6. Schematic................................................................................................................................		18
6.1 Main Board ...........................................................................................................................................		18
6.2 Power Board..........................................................................................................................................		23
6.3 Key Board .............................................................................................................................................		24

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	HP Mannequin (f1503) Service Manual
7. PCB Layout............................................................................................................................	25
7.1 Main Board ...........................................................................................................................................	25
7.2 Power Board..........................................................................................................................................	26
7.3 Key Board .............................................................................................................................................	27
8. Maintainability.......................................................................................................................	28
8.1 Equipments and Tools Requirement...................................................................................................	28
8.2 Trouble Shooting...................................................................................................................................	29
8.2.1 Main Board..................................................................................................................................	29
8.2.2 Power Board ................................................................................................................................	31
8.2.3 Key Board....................................................................................................................................	32
8.3 Alignment Procedure............................................................................................................................	32
8.4 DDC Writing.........................................................................................................................................	33
8.4.1 DDC Writing Procedure ..............................................................................................................	33
8.4.2 EDID Content..............................................................................................................................	33
8.4.3 Serial Number Format .................................................................................................................	34
9. Part Lists ..............................................................................................................................	335

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		HP Mannequin (f1503) Service Manual
1. MONITOR SPECIFICATIONS
	Driving system	TFT Color LCD
LCD Panel	Size	38.1cm(15.0")
	Pixel pitch	0.297( H )x 0.297( V ) mm
	Viewable angle	130˚ (H) 100˚ (V)
	Response time (typ.)	35 ms
	Video	Analog
Input	Sync. Type	H/V TTL Separate and Composite Sync.
	H-Frequency	30kHz – 60kHz
	V-Frequency	56-75Hz
Display Colors		16.7 million Colors
Dot Clock		80MHz
Max. Resolution		1024 x 768
Plug & Play		VESA DDC2BTM
Power Consumption	ON Mode	<22W
	ON Mode (With Speaker)	<34 W
	Power Saving	<2 W
	Power Saving (With Speaker)	<14 W
	Switch Off	<2 W
	Switch Off (With Speaker)	<14 W
Maximum Screen Size		Horizontal : 12.0”(304.128mm)
		Vertical : 9.0”(228.096mm)
Power Source		90~264VAC,47~63Hz
Environmental		Operating Temp: 5°C to 35°C
Considerations		Non-Operating Temp.: -20°C to 60°C
		Operating Humidity : 20% to 80%
Weight (N. W.)
Package with Speaker		6.7Kgs Unit (net)

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HP Mannequin (f1503) Service Manual

2. LCD MONITOR DESCRIPTION

The LCD MONITOR will contain an main board, an power board, key board and external adapter which house the flat panel control logic, brightness control logic and DDC.

The power board will drive the backlight of panel and the main board chips each voltage. An adapter will provide the 12V DC voltage to power conversion board.

Monitor Block Diagram

	CCFT Drive.	Flat Panel and
		CCFL backlight

		Power Board				Main Board
											RS232 Connector
											For white balance
											adjustment in
											factory mode
						Keyboard
AC-IN
		ADAPTER
							HOST Computer
90V-264V										Video signal, DDC

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HP Mannequin (f1503) Service Manual

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 performance.

-The power cord should be connected and insert to adaptor.

-Connect the video cable from the monitor to the computer VGA card.

-Press the power button to turn on the monitor, the power indicator will light up to blue.

3.2Control Buttons

-Power Button:

When pressed, the monitor enters the off mode, and the LED turns blank. Press again to restore normal status.

-- (Down / Brightness) and + (Up / Contrast) Button:

The -/+ Button is browse OSD key. Press a select into adjustment.

-Auto / Select Key:

The Auto Adjust Key is used to automatically set the H Position, V Position, Clock and Phase. Select key is into OSD sub-menu hot key when OSD turn on.

- Power Indicator:

Blue	— Power On mode.
Amber	— Power Saving mode.
Blank	— Power Off Mode.

CONTROL Buttons

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HP Mannequin (f1503) Service Manual

3.3 Adjust The Picture

1.		Brightness/	Adjust the brightness or the difference between the light and
		Contrast	dark area.
			Adjust the:
			z	H-Position: horizontal position of the screen image.
		Image Control	z	V-Position: vertical position of the screen image.
2.			z	Clock: frequency of the pixel clock to minimize vertical
				bar.
			z	Phase: phase value to minimize horizontal jitters.
			Displays a sub-menu with two option:
			z	Color: adjusts the color tint of white, and the red,
3.		Advance		green, and blue (RGB) mix for colors.
			z	OSD (on Screen Display) settings: adjusts the
				position, timeout, and notification features of the On
				Screen Display window.
		Auto	Adjusts the main settings and produces a stable, centered
4.		Configuration
			image.
		Factory	Resets the display to original factory settings for color,
5.		settings	brightness, phase, and clock.
6.		Language	Shows the language of the OSD window.
			Shows the current resolution and refresh rate;
7.		Information	Shows the serial number of display; shows the power-on
			time, and the power-saving time.
8.		Exit	Closes the OSD window.

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HP Mannequin (f1503) Service Manual

4. Input/Output Specification

4.1 Input Signal Connector

4.1.1 Analog D-SUB Connector

PIN	MNEMONIC	SIGNAL
1	RV	Red Video
2	GV	Green Video
3	BV	Blue Video
4	NC	None (available for mfg use if required)
5	GND	Ground (DDC Return)
6	RG	Red GND
7	GG	Green GND
8	BG	Blue GND
9	+5 V	+5 V (from PC)
10	SG	Sync Ground
11	NC	None (available for mfg use if
		required)
12	SDA	DDC Data
13	HS	Horizontal Sync
14	VS	Vertical Sync
15	SCL	DDC Clock

VGA connector layout

PIN 1	PIN 5
PIN 11

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HP Mannequin (f1503) Service Manual

4.2 Factory Preset Display Modes

		Horz	Horz	Vert	Vert
Prese	Pixel	Freq	Polarit	Freq	Polarit	Pixel Clk
t	Format	(KHz)	y	(Hz)	y	(MHz)	Source
1	640 x 350	31.469	+	70.086	-	25.175	VGA
2	640 x 480	31.469	-	59.940	-	25.175	VGA
3	640 x 480	37.500	-	75.000	-	31.500	VESA
4	720 x 400	31.469	-	70.087	+	28.322	VGA
5	800 x 600	37.879	+	60.317	+	40.000	VESA
6	800 x 600	46.875	+	75.000	+	49.500	VESA
7	1024 x 768	48.363	-	60.004	-	65.000	VESA
8	1024 x 768	56.476	-	70.069	-	75.000	VESA
9	1024 x 768	60.023	+	75.029	+	78.750	VESA

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						HP Mannequin (f1503) Service Manual
4.3 Power Supply Requirements
4.3.1 Input Requirements
PARAMETER		RANGE				CONDITION
Input Voltage	90 to 264 VAC RMS				Universal input full range
Input Frequency	60Hz @ 90VAC		to	60Hz @
	264VAC
Input Current	Less than 2.0 Amps RMS				Input voltage 100 VAC RMS ; 60 Hertz. Parameter
					must be reached within 3 seconds of turn-on.
	Less than 1.0 Amps RMS				Input voltage 220 VAC RMS ; 50 Hertz. Parameter
					must be reached within 3 seconds of turn-on.
Input Power	Less than 75 Watts
Power factor > 0.5	Input voltage 120 VAC RMS ; 60
	Hertz
Inrush Current	Less than 30 A peak				Input voltage 100 VAC RMS ; 60 Hertz at all
					Phase(0, 90, 180, 270 degree)
	Less than 50 A peak				Input voltage 240 VAC RMS ; 50 Hertz at all
					Phase(0, 90, 180, 270 degree)
Input Fusing	Fuse should be located internal to the				Fuse must be UL/CSA approved. Fuse value must no
	adapter, easily accessible when the				have to change for 115 VAC or 230 VAC operation
	cover is removed
Leakage Current	Less than 3.5 mA				Input voltage 264 Volts RMS ; 50 Hertz
Hi-Pot	Primary to secondary				1.5KVAC for 1 Minute(leakage current 10mA)
					1.8KVAC for 1 Minute(leakage current 10mA)
					3.0KVAC for 1 Minute(leakage current 10mA)
					without Y-cap & Coupling cap.
	Primary to Saft Ground				1.5KVAC for 1 Minute(leakage current 10mA)
					1.8KVAC for 1 Minute(leakage current 10mA)
4.3.2 Output Requirements
PARAMETER		RANGE				CONDITION
DC Out		12VDC ± 5%				Min 0A Max 3.75A
Load Regulation		12.0V(12.12V) ± 5%				11.4 to 12.6VDC
Dynamic Load		Any frequency	up	to 250Hz(duty		±5% for 10% to 100%, 100% to 10% load change for
Regulation		50%)				+12Vdc
Ripple & noise		170mVpp at 12VDC				Input voltage: 100VAC at 60Hz & 240VAC at 50Hz
						* Ripple and noise are measured.
Output current		less than 7.0A, more than 12.0A				Current exceeds maximum rating more than 20%
protection		at 12.0VDC
Leakage Current		Less than 0.25 mA				Input voltage 100 Volts RMS ; 50 Hertz
		Less than 0.5 mA				Input voltage 254 Volts RMS ; 50 Hertz

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HP Mannequin (f1503) Service Manual

4.4 PANEL SPECIFICATION (Hannstar)

4.4.1Panel Feature

-High contrast ratio

-TN+film (Twisted Nematic) mode -Wide viewing angle

-XGA (1024 x 768 pixels) resolution

-2 dual CCFTs(Cold Cathode Fluorescent Tube) -COMPACT SIZE DESIGN

4.4.2Display Characteristics

Items	Specification	Unit
Display Area	304.1(H) x 228.1(V)	mm
Display color	6 bit dirver	Colors
Number of pixels	1024 x 768	pixel
Pixel Arrangement	RGB vertical stripe	mm
Pixel pitch	0.297(H) x 0.297(V)
Display Mode	Normally White

4.4.3 Optical Characteristics

The optical characteristics are measured under stable conditions at 25 (Room Temperature):

Item			Symbol	Conditions	Min.	Typ.	Max.	Unit	Note
Contrast Ratio			C/R		300	400	-
(Center of screen)
Response	Rising		Tr		-	Tr+Tf=35	-	msec
Time	Falling		Tf	Normal	-		-
White Luminance at CCFL 6mA			YL		200	250	-	cd/m2
				ψ=0 degree
(Center of screen)
			Rx	θ=0 degree		0.623
			Ry	Viewing		0.335
			Gx			0.293
Color Chromaticity(CIE 1931)				Angle	Typ.		Typ.
			Gy			0.599
			Bx		-0.03	0.144	+0.03
			By			0.113
			Wx			0.310
			Wy			0.330
		Hor.	ΘL		55	65	-
Viewing angle			ΘR	CR>10	55	65	-
		Ver.	ΘU		40	45	-
			ΘD		50	55	-
Brightness Uniformity			Buni	ψ=0 degree	70	75	-	%
Crosstalk			[%]	θ=0 degree	-	-	1.3	%

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HP Mannequin (f1503) Service Manual

4.4.4 Parameter guide line for CCFL Inverter

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HP Mannequin (f1503) Service Manual

5. Block Diagram

5.1 Monitor Exploded View

5.1.1 f1503

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HP Mannequin (f1503) Service Manual

5.1.2 f1503

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5.2 Software Flow Chart

1

2 Y 3

N

4

5 N

Y

6

7 N 8

Y

9

10	N	11
Y
N 12		13	N
Y		Y
14		15	N 16
		Y
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HP Mannequin (f1503) Service Manual

1)MCU initialize.

2)Is the eeprom blank?

3)Program the eeprom by default values.

4)Get the PWM value of brightness from eeprom. Check the pin PANEL1 and PANEL2 to tell which panel to get with it.

5)Is the power key pressed?

6)Clear all global flags.

7)Are the AUTO and SELECT keys pressed?

8)Enter factory mode.

9)Saving the power key status into eeprom. 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 and digital port, are there any signals coming?

13)Does the scalar send out a interrupt request?

14)Wake up the scalar.

15)Are there any signals coming from analog or digital port?

16)Display "No Signals" 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	N 19
	Y

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