AOC Service Manual HP-L1740_A00 Monitor Lcd

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Text of AOC Service Manual HP-L1740_A00 Monitor Lcd

  • Horizontal frequencies30 - 83 kHz

    ServiceService

    Service

    TABLE OF CONTENTS

    Published by BCU Monitors Printed in Suzhou Copyright reserved Subject to modification F Nov .11 2004

    Description Page

    Important Safety Notice---- -------------------------- 2

    Technical Data --------------------------------------3~6

    Warning Message-------------------------------------11

    Factory Mode------------------------------------------12

    Installation/On Screen Display-------------------7~10

    Definition of pixel defects----------------------------17

    Electrical Instructions---------------------------18~19

    Failure mode of panel---------------------------------20

    Display adjustment-----------------------------------21

    Flat Panel adjust--------------------------------------13

    Trouble shooting--------------------------------------14

    Mechanical Instructions-------------------------15~16

    Safety test requirements-----------------------------22

    Description Page

    Repair tips/Repair Flow chart------------------35~38

    Function Block----------------------------------------40

    Scaler Diagram----------------------------------41~45

    Scaler Board C.B.A------------------------------46~47

    Control Diagram & C.B.A.----------------------------48

    Power Diagram ----------.-----------------------49~54

    Exploded View--------------------------------------- 55

    Recommended/Spare parts list----------------56~58

    General product specification------------------59~90

    Different parts list------------------------------------91

    DDC Instructions/DATA-------------------------23~31

    ISP Instructions---------------------------------32~34

    Wiring Diagram---------------------------------------39

    REFER TO BACK COVER FOR IMPORTANT SAFETY GUIDELINES

    CAUTION: USE A SEPARATE ISOLATION TRANSFORMER FOR THIS UNIT WHEN SERVICING.

    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.

    SAFETY NOTICE

    SH4 HP L1740

    GB 3138 106 10438

    17" LCD Colour Monitor

    CJ6B50/76CJ6B50/02

  • Important Safety Notice2 HP L1740

    Go to cover page

    Proper service and repair isimportant to the safe, reliable

    operation of all HPConsumer Electronics Company**

    Equipment. The service procedures recommended by HP and

    described in this service manual are effective methods of

    performing service operations. Some ofthese 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. HP 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, HP has not

    undertaken any such broad evaluation. Accordingly, a

    servicer who uses a service procedure or tool which is not

    recommended by HP 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, HP Consumer

    Electronics Company will bereferred to as HP.

    Critical components having special safety characteristics are

    identified with a bythe Ref. No. inthe parts list and

    enclosed within a broken line*

    (where several critical components are grouped in one area)

    along with the safety symbol on the schematics or

    exploded views.

    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 Philips.

    Philips assumes no liability, express or implied, arising out of

    any unauthorized modification of design.

    Servicer assumes all liability.

    * Broken Line

    WARNING

    Take care during handling the LCD module with backlight

    unit

    - Must mount the moduleusing mounting holes arranged infour

    corners.

    - Do not press onthe panel, edge of theframe strongly or electric

    shock as this will result in damage to the screen.

    - Do not scratch orpress on the panel withany sharp objects, such

    as pencil or pen asthis may result in damage to the panel.

    - Protect the module fromthe ESD as it maydamage the electronic

    circuit (C-MOS).

    - Make certain that treatment person s body are grounded through

    wrist band.

    - Do not leave themodule in high temperature andin areas of high

    humidity for a long time.

    - Avoid contact with water as it may ashort circuit within the module.

    - If the surface ofpanel become dirty, please wipe it off with a soft

    material. (Cleaning with a dirty or rough cloth may damage the

    panel.)

    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.

  • 3Technical Data HP L1740Go to cover page

    "

  • Technical Data(Continued)4

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    HP L1740

    2. Electrical characteristics and performanceTest signal and test method in accordance with test instructions sheet161 of the product where applicable.2.1 Actual display size: 337.920 x 270.336 mm2.2 Resolution1.Factory Preset modes (15 modes)

    # Resolution H-Frequency

    (Hz)

    Pixel rate

    (MHz)

    V-Frequency Comment

    1 640X480 31.469K 25.175 59.940 Hz VGA

    2 640X480 37.861K 31.5 72.809 Hz VESA

    3 640X480 37.5K 31.501 75 Hz VESA

    4 720X400 31.469K 28.322 70.087 Hz VGA

    5 800X600 37.879K 40 60.317 Hz VESA

    6 800X600 48.077K 50 72.188 Hz VESA

    7 800X600 46.875K 49.498 75 Hz VESA

    8 832X624 49.726K 57.284 74.551 Hz MAC

    9 1024X768 48.363K 65 60.004 Hz VESA

    10 1024X768 56.476K 75 70.069 Hz VESA

    11 1024X768 60.023K 78.75 75.029 Hz VESA

    12 1152X870 68.68K 100 75.06 Hz MAC

    13 1152X900 71.71K 108 76.05 Hz SUN

    14 1280X1024 63.98K 108 60.02Hz VESA

    15 1280X1024 79.97K 135 75.02Hz VESA

    Over-scan Mode

    16 640*480 43.269K 36.000 85.008Hz

    2.5

  • 5Technical Data(continued) HP L1740

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    2.14

    2.13

    2.12

  • Technical Data(Continued)6

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    HP L1740

  • Installation 7HPL 1740

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    Rear Panel Components

    No Component Function

    1 AC power connector Connects the AC power cord to the monitor

    2 USB downstream connectors Connects optional USB devices

    to the monitor

    3 USB upstream connector Connects the USB cable to the host

    (computer or another USB hub)

    4 DVI connector (available on

    select models)

    . Connects the DVI -D signal cable to the

    monitor

    5 VGA connector Connects the VGA cable to the monitor

    Connecting the Power Cable

    3. For analog operation, connect one end of the VGA signal

    cable to the VGA connector on the monitor 1, and the other

    end to the VGA connector on the computer 2.

    Connecting the VGA Signal Cable

    4. Connect the USB cable to the USB upstream connector on themonitor 1 and to a convenient USB connector on the computer 2.

    Connecting the USB Cable

  • On Screen Display8 HP L1740Go to cover page

    Front Pan el Controls

    No Control Function

    1 Auto Adjust Activates the auto adjustment feature for optimum

    image

    2 Menu Opens the On-Screen Display (OSD) menu

    3 (Minus) If OSD is on, press to navigate backward through

    the OSD menu features and decrease adjustment

    levels.

    If OSD is off, press to enable the DVI signal input

    (available on select models)

    4 + (Plus) If OSD is on, press to navigate forward through the

    OSD menu features and increase adjustment

    levels

    If OSD is off, press to enable the VGA signal input

    5 Power Turns the monitor on or off

    BASIC OSD MENU LEVEL S

    -

  • On Screen Display 9HPL 1740

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    ADVANCED OSD MENU LEVELS

    Analog Mode Menu

    Menu Level 1 Menu Level 2 Menu Level 3 Factory Reset?

    Brightness ADJ Scale Y (90)Contrast ADJ Scale Y (80)

    Image Control Auto Adjustment ( Adjusting message) Y (no FD)

    Horizontal Position ADJ Scale Y (no FD)

    Vertical Position ADJ Scale Y (no FD)

    Clock ADJ Scale Y (no FD)

    Clock Phase ADJ Scale Y (no FD)

    Cancel

    Save and Return

    Color 9300 K

    6500 K Y(FD)

    Custom Color Custom Color ADJ

    SRGB

    Cancel

    Save and Return

    Language Deutsch

    S. Chine