Aoc 931swl Lcd Monitor Service Manual

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    AOC 931Swl

    SERVICE MANUAL

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    A00 Jan.-28-2010 Initial Release 931Swl T89AHENDW5A4NNE

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    1. -------------------------------------------------------------------------------------------------------------- 4 1.1 --------------------------------------------------------------------------------------------------------- 4 1.2 --------------------------------------------------------------------------------------------------- 5

    2. -------------------------------------------------------------------------------------------------------------- 6 2.1 --------------------------------------------------------------------------------------------------------- 6 2.2 --------------------------------------------------------------------------------------------------------- 7 2.3 OSD ------------------------------------------------------------------------------------------------- 8 3. -------------------------------------------------------------------------------------------------------- -9 4. -------------------------------------------------------------------------------------------------------- 10

    4.1 --------------------------------------------------------------------------------------------------------------- 10 4.2 ------------------------------------------------------------------------------------------------------------ 13 4.3 ------------------------------------------------------------------------------------------------------------ 15

    5. ----------------------------------------------------------------------------------------------------------- 16 5.1 --------------------------------------------------------------------------------------------------------------- 16 5.2 ------------------------------------------------------------------------------------------------------------ 17

    6. ----------------------------------------------------------------------------------------------------------------- 18 6.1 --------------------------------------------------------------------------------------------------------------- 18 6.2 ------------------------------------------------------------------------------------------------------------ 22 7. -------------------------------------------------------------------------------------------------------------- 24

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    1.

    1.1 931Swl TFT LCD 470mm 0.3mm(H) x 0.3mm(V) R, G, B / TTL 16.7M

    LCD

    85.5 MHz 30 kHz - 81 kHz 409.8mm 55 Hz - 75 Hz 230.4mm 1366 x 768 (60 Hz) 1366 x 768 (60 Hz) VESA DDC2B/CI D-Sub 15 0.7Vp-p75 OHM 100-240VAC, 50/60Hz

    < 25 W

    < 1 W

    15- Mini D-Sub () 357.9 mm 455.2mm 219.7mm 3.53kg

    4.86 kg 0- +40 -20- +60 10% - 85% 5% - 80% 0~3000m (0~10000 ft)

    0~5000m (0~15000 ft)

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    1.2 (kHZ) (Hz) VGA 640 x 480 @60Hz 31.469 59.94

    VGA 640 x 480 @67Hz 35 66.667

    VGA 640 x 480 @72Hz 37.861 72.809

    VGA 640 x 480 @75Hz 37.5 75

    Dos-mode 640 x 400 @70Hz 31.469 70.087

    Dos-mode 720 x 400 @70Hz 31.469 70.087

    SVGA 800 x 600 @56Hz 35.156 56.25

    SVGA 800 x 600 @60Hz 37.879 60.317

    SVGA 800 x 600 @72Hz 48.077 72.188

    SVGA 800 x 600 @75Hz 46.875 75

    Mac-mode 832 x 624 @75Hz 49.725 74.5

    XGA 1360 x 768 @60Hz 47.712 60.015

    XGA 1024 x 768 @60Hz 48.363 60.004

    XGA 1024 x 768 @70Hz 56.476 70.069

    XGA 1024 x 768 @72Hz 57.5 72.074

    XGA 1024 x 768 @75Hz 60.023 75.029

    XGA 1024 x 768 @75Hz 60.241 74.927

    WSXGA 1366 x 768 @60Hz 47.765 59.85

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    2.

    2.1

    *

    * PC

    *

    1 () / - 2 4:3/ /+ 3 4 / 5 /

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    2.2

    15 15 1 - 9 +5V 2 - 10 3 - 11 4 12 DDC- 5 13 H- 6 GND-R 14 V- 7 GND-G 15 DDC- 8 GND-B

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    2.3 OSD

    MENU OSD + - MENU

    + - MENU + - 2-3 OSD OSD MENU OSD

    MENU OSD

    4:3 : OSD , 4:3 ( 4:3

    , ) : OSD ,

    LED

    LED

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    3.

    Menu

    a.:

    50

    90

    b.:

    9300K

    1AUTO LEVEL

    2MENU9300KR G B

    x = 28330, y = 297 30, Y =180 30 cd/m2

    7300K

    1AUTO LEVEL

    2MENU7300KR G B

    x = 302 30, y = 318 30, Y = 180 30 cd/m2

    6500K

    1AUTO LEVEL

    2MENU 6500K R G B

    x = 31330, y = 329 30, Y =180 30 cd/m2

    sRGB

    1AUTO LEVEL

    2MENU sRGB R G B

    x = 31330, y = 329 30, Y =180 30 cd/m2

    c.

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    4. 4.1

    AC:100-240V ?

    U404 Vout=3.3V,U405 Vout=1.8V

    X401

    CN404,U404,U405

    U401

    X401

    OK

    OK

    OK

    NG

    NG

    NG

    NG

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    (LED )

    U404 Vout=3.3V,U405 Vout=1.8V

    U401

    X401

    CN404,U404,U405

    OK

    OK

    OK

    OK

    NG

    NG

    CN101 HS/VS

    X401

    NG

    NG

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    Q404

    X401

    FB402,Q404 CN405

    PANEL

    U401

    OK

    OK

    OK X401

    OK

    NG

    NG

    NG

    NG

    U401

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    4.2

    100V or 240V

    AC

    C907 (+)

    F901

    IC901 8

    R904,R932 IC901 NG

    1) IC901 2) D901/D903

    D905,D906,D906,Q901,IC902,IC903,ZD902

    OK

    IC901 5,6 PWM

    OK IC901

    NG

    NG

    OK

    OK

    OK

    NG

    NG

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    C802(+) 12V

    NG

    OK Adapter

    ON/OFF

    NGOK

    IC801 8/11 12V

    NG

    OK

    IC801 9/10 PWM

    NG

    T801

    Q802

    ,

    OK

    NG T801

    OK

    IC801

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    4.3 OSD

    OK

    OSD

    OK

    NG

    NG

    OK

    NG

    OK

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    5. 5.1

    Crystal 24.576MHz

    (X401)

    FLASH ROM

    MX25L2026MI

    (U402)

    Scalar IC HX6810

    (Include ADC, OSD, MCU)

    (U401)

    D-Sub Connector

    (CN101)

    Panel Interface

    (CN405)

    Key Control Interface

    (CN408)

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    5.2

    CN902

    DIM

    EMI filter Bridge

    Rectifier

    and Filter

    Start Circuit:R904,R932

    PWM Control IC LD7575A PS

    (IC901)

    Transformer

    (T901)

    Rectifier

    diodes

    AC input

    12V

    ON/OFF

    Control PWM

    Control IC

    Feedback

    Circuit

    LC

    Resonance

    Transforme

    (T801) MOSFET

    Over

    Voltage

    Lamp

    ON/OFF

    Feedback

    Circuit Over

    Voltage

    Protect 5V

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    6. 6.1

    VGA_5VVGA_B

    R106 1K 1/16W 5%

    CN101

    DB15

    162738495

    11

    12

    13

    14

    1510

    1

    7

    1

    6 5VGA_PLUG

    DET_CABLE_N3

    VGA_5V

    VGA_SDA

    D101

    BAV70

    3

    1

    2

    VGA_R

    VGA_V

    R123

    4

    K

    7

    1

    /

    1

    6

    W

    5

    %

    R124

    4

    K

    7

    1

    /

    1

    6

    W

    5

    %

    R125

    4

    K

    7

    1

    /

    1

    6

    W

    5

    %

    R118 100R 1/16W 5%

    R119 100R 1/16W 5%

    R120 100R 1/16W 5%

    FB103

    BEAD1 2

    C107 0.047uF

    C103

    22pF

    C111

    NC

    FB102

    BEAD1 2

    R127

    1K 1/16W 5%

    C105 0.047uF

    FB101

    BEAD1 2

    R105 0R05 1/10W 5%

    R110 100R 1/16W 5%

    R117 100R 1/16W 5%

    C113 0.047uF

    C110 0.047uF

    C102

    22pFR108

    2

    K

    2

    1

    /

    1

    6

    W

    5

    %

    R112

    7

    5

    R

    1

    /

    1

    6

    W

    5

    %

    C109 0.047uF

    R107

    2

    K

    2

    1

    /

    1

    6

    W

    5

    %

    R104 1K 1/16W 5%

    C108

    NC

    C104

    NC

    R115 100R 1/16W 5%

    R113 100R 1/16W 5%R121 390 OHM 1/16W

    C101 0.047uF

    R116

    7

    5

    R

    1

    /

    1

    6

    W

    5

    %

    VGA_PLUG

    R114 100R 1/16W 5%

    VGA_PLUG

    SDA_VGA

    U103

    SDA_VGA

    SCL_VGA

    VGA_R VGA_B

    U101

    VGA_HS

    VGA_VS

    VGA_G

    VGA_PLUG

    VGA_BG_GNDVGA_GR_GNDVGA_R

    VGA_5V

    B_GND

    VGA_5V_S

    C116

    0

    .

    2

    2

    u

    F

    R122

    7

    5

    R

    1

    /

    1

    6

    W

    5

    %

    VGA_SCL VGA_DDCA_SCL 3

    R109 0R05 1/16W

    VGA_DDCA_SDA 3

    R111

    0

    R

    0

    5

    1

    /

    1

    6

    W

    U103AZC199-04S

    I/O11

    GND2

    I/O23 I/O3 4VDD

    5I/O46

    U102AZC199-04S

    I/O11

    GND2

    I/O23 I/O3 4VDD 5I/O4 6

    4 TXD

    SCL_VGA

    2 G_OUT

    VGA INTERFACE

    15 DDC SCL

    11 RXD12 DDC SDA

    R_GND

    VGA_G

    G_GND

    B_GND

    1 R_OUT 6 R_GND

    8 B_GND

    10 GND9 +5V(DDC)

    7 G_GND3 B_OUT

    VGA_5V_S

    13 TTL H-S

    VGA PIN DEFIINITION

    14 TTL V-S

    C115

    NC

    Q101

    LMBT3904LT1G

    C114

    NC EDID_WP

    GND_B 3

    GND_G 3

    GND_R 3

    U101

    M24C02-WMN6TP

    A01

    A12

    A23

    VSS4 SDA 5SCL 6WP 7

    VCC8

    TXD 3

    RXD3

    VSYNC 3

    C106 1000pF

    R126

    4K7 1/16W 5%

    ZD104RLZ5.6B

    VGA_VS

    VGA_HS

    OEM MODE