AOC F1703 Service Manual

HP f1703 Service Manual

SERVICE MANUAL

17” LCD Monitor

f1703

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 RE LIABILITY FOR CHANGES, ERRORS OR OMISSIONS.

HP f1703 Service Manual

Table of Contents

Table Of Contents --------------------------------------------------------------------------------------------------------------------2

1. Monitor Specifications ------------------------------------------------------------------------------------------------4

2. LCD Monitor Description ------------------------------------------------------------------------------------------------5

3. Operating Instructions ---------------------------------------------------------------------------------------------6

3.1 General Instructions -----------------------------------------------------------------------------------------------6

3.2 Control Buttons -----------------------------------------------------------------------------------------------------6

3.3 Adjusting the Picture -----------------------------------------------------------------------------------------------7

4. Input/Output Specification ----------------------------------------------------------------------------------------------------------8

4.1 Input Signal Connector ----------------------------------------------------------------------------------------------------------8

4.1.1 Analog D-SUB Connector ---------------------------------------------------------------------------------------------------8

4.2 Factory Preset Display Modes ---------------------------------------------------------------------------------------------------9

4.3 Power Supply Requirements -------------------------------------------------------------------------------------------------10

4.3.1 Input Requirements ------------------------------------------------------------------------------------------------------10

4.3.2 Output Requirements --------------------------------------------------------------------------------------------------------10

4.4 PANEL SPECIFICATION (Samsung) ------------------------------------------------------------------------------------11

4.4.1 Panel Feature --------------------------------------------------------------------------------------------------------------11

4.4.2 Display Characteristics --------------------------------------------------------------------------------------------------------11

4.4.3 Optical Characteristics -------------------------------------------------------------------------------------------------------11

4.4.4 Parameter Guide Line For CCFL Inverter ----------------------------------------------------------------------------12

5. Block Diagram -------------------------------------------------------------------------------------------------------------------13

5.1 Monitor Exploded View --------------------------------------------------------------------------------------------------------13

5.1.1 F1703 --------------------------------------------------------------------------------------------------------------------------13

5.2 Software Flow Chart --------------------------------------------------------------------------------------------------------------18

5.3 Electrical Block Diagram -----------------------------------------------------------------------------------------------------20

5.3.1 Main Board -------------------------------------------------------------------------------------------------------------------20

5.3.2 Inverter/Power Board -------------------------------------------------------------------------------------------------------21

6. Schematic ----------------------------------------------------------------------------------------------------------------------------22

6.1 Main Board -------------------------------------------------------------------------------------------------------------------22

6.2 Inverter/Power Board ------------------------------------------------------------------------------------------------------26

6.3 Keypad Board -------------------------------------------------------------------------------------------------------------------27

7. PCB Layout ---------------------------------------------------------------------------------------------------------------------------28

7.1 Main Board -------------------------------------------------------------------------------------------------------------------28

7.2 Inverter/Power Board ------------------------------------------------------------------------------------------------------29

7.3 Keypad Board ---------------------------------------------------------------------------------------------------------------------30

8. Maintainability ---------------------------------------------------------------------------------------------------------------------31

8.1 Equipments And Tools Requirement ------------------------------------------------------------------------------------31

8.2 Trouble Shooting -------------------------------------------------------------------------------------------------------------32

8.2.1 Main Board -------------------------------------------------------------------------------------------------------------------32

HP f1703 Service Manual

8.2.2 Power/Inverter Board ------------------------------------------------------------------------------------------------------34

8.2.3 Keypad Board -------------------------------------------------------------------------------------------------------------37

8.3 Alignment Procedure -----------------------------------------------------------------------------------------------------38

8.4 EDIT Content --------------------------------------------------------------------------------------------------------------------39

8.5 Serial Number Format -------------------------------------------------------------------------------------------------------40

9. Part Lists --------------------------------------------------------------------------------------------------------------------------41

HP f1703 Service Manual

1. MONITOR SPECIFICATIONS

Driving system TFT Color LCD

LCD Panel Size 43.2cm(17.0")

Pixel pitch 0.264mm( H )x 0.264mm( V )

Viewable angle 120˚ (H) 90˚ (V)

Response time (typ.) 25 ms

Video Analog

Input Sync. Type H/V TTL

H-Frequency 30kHz – 83kHz

V-Frequency 56-76Hz

Display Colors 16.2 million Colors

Dot Clock 108MHz

Max. Resolution 1280 x 1024

Plug & Play VESA DDC2BTM

Power Consumption ON Mode

(Speakers Connected)

ON Mode

(Without Speakers)

OFF Mode

(Audio Volume=0)

Maximum Screen Size

Power Source

Environmental

Operating Temp: 5°C to 35°C

<48W

<36W

<2W

Horizontal : 13.3”(337.92mm) Vertical : 10.6”(270.336mm)

90~264VAC,47~63Hz

Considerations

Weight (N. W.)

F1703 5.5Kgs Unit (net)

Storage Temp.: -20°C to 60°C

Operating Humidity : 20% to 80%

HP f1703 Service Manual

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2. LCD MONITOR DESCRIPTION

The LCD MONITOR will contain an main board, an inverter/power board, keypad board and external adapter

which house the flat panel control logic, brightness control logic and DDC.

The Inverter board will drive the backlight of panel and the DC-DC conversion.

The Adapter will provides the 12V DC-power to inverter/power board.

AC-IN

90V-264V

Inverter Board

with DC-DC module)

ADAPTER

Monitor Block Diagram

CCFT Drive.

Main Board

Keyboard

Flat Panel and

CCFL backlight

HOST Computer

RS232 Connector

For white balance

adjustment in

factory mode

Video signal, DDC

HP f1703 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 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

Power Button:

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

- Left / Right Button:

The Left/Right Button is used to control the monitor functions. Press to switch functions or adjust settings.

- Auto Adjust Key:

The Auto Adjust Key is used to automatically set the H Position, V Position, Clock and Phase.

- Power Indicator:

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

CONTROL Buttons

3.3 ADJUSTING THE PICTURE

HP f1703 Service Manual

Brightness/ Contrast

Image Control

3. Advance

Auto

Configuration

Factory settings

Language Shows the language of the OSD window.

7. Information

8. Exit Closes the OSD window.

Adjust the brightness or the difference between the light and dark area.

Adjust the:

z horizontal position of the screen image. z vertical position of the screen image. z frequency of the pixel clock to minimize vertical bar. z phase value to minimize horizontal jitters.

Displays a sub-menu with two option: z Color: adjusts the color tint of white, and the red,

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.

Adjusts the main settings and produces a stable, centered image.

Resets the display to original factory settings for color, brightness, phase, and clock.

Shows the current resolution and refresh rate;

Shows the serial number of display; shows the power-on time, and the power-saving time.

4. Input/Outpt Specification

4.1 Input Signal Connector

4.1.1 Analog D-SUB Connector

HP f1703 Service Manual

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 11

PIN 5

4.2 Factory Preset Display Modes

HP f1703 Service Manual

Prese

Pixel

Format

Horz

Freq

(KHz)

Horz

Polarit

Vert

Freq

(Hz)

Vert

Polarity Pixel Clk

(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

1280 x

63.981

60.02

108.0

VESA

1024

1280 x

79.976

75.035

135.0

VESA

1024

HP f1703 Service Manual

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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 50Hz @

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 reachedwithin 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

Less than 50 A peak Input voltage 240 VAC RMS ; 50 Hertz at all

Input Fusing Fuse should be located internal to the

adapter, easily accessible when the

cover is remove 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)

Primary to Saft Ground 1.5KVAC for 1 Minute(leakage current 10mA)

Phase(0, 90, 180, 270 degree)

Phase(0, 90, 180, 270 degree) Fuse must be UL/CSA approved. Fuse value must no have to change for 115 VAC or 230 VAC operation

1.8KVAC for 1 Minute(leakage current 10mA)

3.0KVAC for 1 Minute(leakage current 10mA) without Y-cap & Coupling cap.

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

Regulation

Ripple & noise 170mVpp at 12VDC Input voltage : 100VAC at 60Hz 240VAC at 50Hz

Output current

rotection

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

Any frequency up to 250Hz(duty

50%)

less than 7.0A, more than 12.0A

at 12.0VDC

±5% for 10% to 100%, 100% to 10% load change for

+12Vdc

* Ripple and noise are measured.

Current exceeds maximum rateing more than 20%

4.4 PANEL SPECIFICATION (Samsung )

4.4.1 Panel Feature

-High contrast ratio, high aperture structure

-TN(Twisted Nematic) mode

-Wide viewing angle

-High speed response

-SXGA(1280 x 1024 pixels) resolution

-Low power consumption

-2 dual CCFTs(Cold Cathode Fluorescent Tube)

-DE(Data Enable) mode

-COMPACT SIZE DESIGN

HP f1703 Service Manual

4.4.2 Display Characteristics

Items Specification Unit

Display Area 337.92(H) x 270.336(V) mm Driver element a-Si TFT active matrix Display color 16.2M Colors Number of pixels 1280 x 1024 pixel Pixel Arrangement RGB vertical stripe Pixel pitch 0.264(H) x 0.264(W) mm Display Mode Normally White Surface treament Haze 25% , Hard-coating (3H)

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 (Center of screen)

Response Time

Luminance of White (Center of screen)

Chromaticity

Coordinates (CIE)

Brightness Uniformity [%] 75 80 -

Rising

Falling Tf - 20 25

Color

(CIE 1931)

C/R

YL 200 250 - Cd/m2

Ry 0.351

Gx 0.298 Gy 0.592

Bx 0.143 By 0.092

Wx 0.316 Wy 0.337

Normal

ψ=0 θ=0

Viewing

Angle

250 350 -

- 5 7

0.633

Typ.

-0.03

TYP.

+0.03

msec

4.4.4 Parameter guide line for CCFL Inverter

INVERTER MAX BRINGTHNESS (Vadj:4.0v), LOAD=120KΩX4(ROOM TEMPERATURE 25℃ ±4℃)

ITEM

SYMBOL MIN. TYP. MAX. UNIT REMARK

HP f1703 Service Manual

Input voltage

10.8 12 13.2 V

Vin

Input current Iin 2300 2550 mA

Output Current Iout 6.0 6.5 7.0 mA

Frequency

H.V open

F 52.0

1500 1650 1800 Vrms

57.0 62.0 KHZ

Vopen

H.V Load

710 810 910 Vrms

Vload

Start voltage Vst

Protect delay time PDT

1700 1850 2000 Vrms

0.4 1 Sec

FOR 4 LOAD

FOR 1 LOAD

NO LOAD

RL=120KΩ

RL=CCFL

5. Block Diagram

5.1 Monitor Exploded View

5.1.1 f1703

HP f1703 Service Manual

5.2 Software Flow Chart

643

141113

1516

1719

HP f1703 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.

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.

Scaler initialize.

10) In standby mode ?

11) Update the life time 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 "Check Video 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 ?

5.3 Electrical Block Diagram

5.3.1 Main Board

HP f1703 Service Manual

MCU

W78E65P

(U8)

ADE_SDA,

ADE_SCL

LCD

Interface

(CN3)

LVDS

THC63LVDM83A

(U2)

Scalar ADE3000SX

(Include ADC,OSD)

(U1)

OSD

Control

Interface

(CN1)

EPR_SDA

EPR_SCL

EEPROM

24C16

(U9)

RXD

TXD

RGB

D-Sub

Connector

(CN1)

Hsync,

Vsync

DB15_SDA,

DB15_SCL

EEPROM

24C02

(U2)

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