AOC 177Vk Service Manual
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AOC 177Vk Service Manual

AOC 177Vk Service Manual

17" lcd color monitor
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17" LCD Color Monitor
Service
Service
Service
Description

Table Of Contents..........................................................1

Revision List.................................................................2
1. Monitor Specification..................................................3
2.LCD Monitor Description........................................4
3. Operation Instruction.............................................5
3.1 General Instructions...................................................5
3.2 Control Button....................................................5
3.3 Adjusting the Picture..........................................6
4. Input/Output Specification.......................................7
4.1 Input Signal Connector.......................................7
4.2 Factory Preset Display Modes.........................8
4.3 Power Supply Requirements..............................8
5 Panel Specification..................................................9
5.1 Display Characteristics....................................9
5.2 Optical Characteristics......................................9
6.Block Diagram...............................................11
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
TABLE OF CONTENTS
Page
Description
6.1 Software Flow Chat.........................................11
6.2 Electrical Block Diagram.................................12
7. Schematic.................................................... 15
7.1 Main Board..........................................................15
7.2 Power Board.......................................................20
8. PCB Layout.....................................................22
8.1 Main Board.....................................................22
8.2 Power Board.........................................................25
8.3 Key Board.......................................................28
8.4 Audio Board.................................................28
9. Maintainability................................................29
9.2. Trouble Shooting................................................30
11.Monitor Exploded View...................................36
12. BOM List..............................................................37
SAFETY NOTICE
1
AOC 177Vk
Horizontal Frequency
30-80kHz
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Summary of Contents for AOC 177Vk

  • Page 1: Table Of Contents

    17" LCD Color Monitor AOC 177Vk Service Service Service Horizontal Frequency 30-80kHz TABLE OF CONTENTS Description Page Description Page Table Of Contents..……....……...…..1 6.1 Software Flow Chat…….…..…………..11 6.2 Electrical Block Diagram………...………...…..12 Revision List.…......………....……..2 1. Monitor Specification.........………..3 7. Schematic……………………………………………. 15 7.1 Main Board…………..........15 2.LCD Monitor Description……………………………..4...

  • Page 2: Revision List

    17" LCD Color Monitor AOC 177Vk Revision List Revision Date Revision History TPV Model Jan.-17-2008 Initial release T77SRTDBF1ACANE...

  • Page 3: Monitor Specification

    17" LCD Color Monitor AOC 177Vk 1. Monitor Specifications General Model number 177Vk Driving system TFT Color LCD Viewable Image Size: 432mm diagonal Pixel pitch 0.264mm(H) x 0.264mm(V) Video R, G, B Analog interface LCD Panel(17") Video Digital Interface (only Dual-Input Model) Separate Sync.

  • Page 4: Lcd Monitor Description

    17" LCD Color Monitor AOC 177Vk 2. LCD Monitor Description The LCD MONITOR will contain a main board, a power board, an audio board and a key board which house the flat panel control logic, brightness control logic and DDC.

  • Page 5: General Instructions

    17" LCD Color Monitor AOC 177Vk 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.
  • Page 6 17" LCD Color Monitor AOC 177Vk Main Main Menu Item Menu Sub Menu Item Menu Description Icon Icon Contrast Contrast from Digital-register. Luminance Brightness Backlight Adjustment Focus Adjust Picture Phase to reduce Horizontal-Line noise Image Setup Clock Adjust picture Clock to reduce Vertical-Line noise.

  • Page 7: Input/Output Specification

    17" LCD Color Monitor AOC 177Vk 4. Input/Output Specification 4.1 Input Signal Connector 4.1.1 D-SUB connector PIN NO. DESCRIPTION PI N NO. DESCRIPTION Video-Red Video-Green Detect Cable Video-Blue Ground DDC-Serial data DDC-Return H-sync GND-R V-sync GND-G DDC-Serial clock GND-B VGA connector layout 4.1.2 DVI-D connector...

  • Page 8: Factory Preset Display Modes

    17" LCD Color Monitor AOC 177Vk 4.2 Factory Preset Display Modes Horizontal Vertical Standard Resolution Frequency (kHz) Frequency (Hz) Dos-mode 720 x 400 31.47 640 x 480 31.47 640 x 480 37.5 SVGA 800 x 600 37.879 SVGA 800 x 600 46.875...

  • Page 9: Panel Specification

    17" LCD Color Monitor AOC 177Vk 5 Panel Specification 5.1 Display Characteristics 5.2 Optical Characteristics...

  • Page 10: Parameter Guide Line For Ccfl Inverter

    17" LCD Color Monitor AOC 177Vk 5.3 Parameter guide line for CCFL Inverter 1. TFT LCD Module: 2. Back Light Unit:...

  • Page 11: Block Diagram

    17" LCD Color Monitor AOC 177Vk 6. Block Diagram 6.1 Software Flow Chat...
  • Page 12 17" LCD Color Monitor AOC 177Vk 1) MCU initialize. 2) Is the EPROM blank? 3) Program the EPROM by default values. 4) Get the PWM value of brightness from EPROM. 5) Is the power key pressed? 6) Clear all global flags.

  • Page 13: Electrical Block Diagram

    17" LCD Color Monitor AOC 177Vk 6.2 Electric Block Diagram 6.2.1 Main Board Crystal 24MHZ Panel Interface (X301) (CN101) Scalar IC RTD2525L-LF (Include ADC, OSD) RTD2120L-LFLQFP48 (U401-1) (U402) H sync V sync DCLK+ DCLK- EEPROM M24C16 Control Interface (U302) D-Sub...

  • Page 14: Power Board

    17" LCD Color Monitor AOC 177Vk 6.2.2 Inverter / Power Board Bridge Rectifier Transformer AC input Rectifier diode EMI filte r and Filter Start Circuit: R905、R906、 CN902 R907、R908、R909、R910 Over Control IC Voltage Protect ON/OFF OSC and DC Convert MOSFET Output...
  • Page 15 17" LCD Color Monitor AOC 177Vk 7. Schematic 7.1 Main Board...
  • Page 16 17" LCD Color Monitor AOC 177Vk CN101 3DVCC VCC12V 5DVCC BKLT-EN BKLT-VBRI VCC12V L101 D101 U101 VCC5V VCC5V 600 OHM SS14 C110 C104 C109 C101 C103 CONN C102 220uF/25V 100pF/50V AIC1084-33PE 100pF/50V 100uF/16V 220uF/25V 100pF/50V 5DVCC VOUT(2) 5DVCC R104 AIC1084-33M...
  • Page 17 17" LCD Color Monitor AOC 177Vk C705,C708,C712由10uF-->15uF;R701,R703,R704,R706,R709,R711由100 ohm-->360 ohm 070215 L701 RED+IN R701 C704 30 OHM 360Ω 1/10W 0.047uF R702 C705 15pF DDC1_SDA DGND R703 C706 CN702 75 OHM +-1% 1/10W 360Ω 1/10W 0.047uF L702 RED+IN DGND GREEN+IN R704 C707...
  • Page 18 17" LCD Color Monitor AOC 177Vk MCU_VCC MCU_VCC MCU_VCC D303 MCU_VCC MAX810STR D302 DSUB_5V C305 D301 C301 0.1uF/16V LL4148 Q301 U301 PMBS3906 U302 Bus_Power LL4148 NC/LL4148 R301 R304 3DVCC 4K7 1/10W 5% C308 100pF/50V AT24C16N-10SU-2.7 3DVCC Q302 PMBS3906 MCU_RESET R302...
  • Page 19 17" LCD Color Monitor AOC 177Vk 3DVCC R3.3DVCC RXO0- RXO0- L401 RXO0+ RXO0+ RXO1- RXO1- RXO1+ RXO1+ 600 OHM RXO2- RXO2- RXO2+ RXO2+ Note: C403 C409 C410 C424 C411 RXOC- RXOC- Using the RTD2525L, 100uF/16V 100pF/50V RXOC+ RXOC+ RXO3- RXO3-...
  • Page 20 17" LCD Color Monitor AOC 177Vk CN503 LVDS Panel ( Normal Type ) RXO0- RXO0+ CN504 RXO0- RXO1- RXO1+ RXO0- RXO0+ RXO2- RXO2+ RXO0+ RXO1- RXOC- RXOC+ RXO0- RXO1- RXO0- RXO1+ RXO3- RXO3+ RXO0+ RXO1+ RXO0+ RXO2- RXE0- RXE0+ RXO1-...

  • Page 21: Power Board

    　 1/4W R930 IC921 KIA431 Q910 1/10W 　 R929 HS3 D920 HS4 Q900 2.4K 　 1/10W 1% AOC (Top Victory) Electronics Co., Ltd. CN901 RJ901 RJ902 Title PWPC1742HDE2P(715G1823-1) SOCKET HEAT SINK HEAT SINK 1/8W 1/8W 　 　 Size Document Number...
  • Page 22 1000P/50V R830 　 1/10W Q806 AM9945 R835 C838 　 1/10W D804 BAV99 1UF/25V AOC (Top Victory) Electronics Co., Ltd. Title R834 2. FOR 17" 4 LAMPS INVERTER D803 N.C R833 3.6K 　 1/10W 1% BAV70 1/10W 　 Size Document Number...
  • Page 23 17" LCD Color Monitor AOC 177Vk 8. PCB Layout 8.1 Main Board...
  • Page 24 17" LCD Color Monitor AOC 177Vk...
  • Page 25 17" LCD Color Monitor AOC 177Vk...
  • Page 26 17" LCD Color Monitor AOC 177Vk 8.2 Power Board...
  • Page 27 17" LCD Color Monitor AOC 177Vk...
  • Page 28 17" LCD Color Monitor AOC 177Vk...

  • Page 29: Key Board

    17" LCD Color Monitor AOC 177Vk 8.3 Key Board 8.4 Audio Board...

  • Page 30: Maintainability

    17" LCD Color Monitor AOC 177Vk 9. Maintainability 9.1 Equipments and Tools Requirement Voltmeter. Oscilloscope. Pattern Generator. DDC Tool with an IBM Compatible Computer. Alignment Tool. LCD Color Analyzer. Service Manual. User Manual.

  • Page 31: Trouble Shooting

    17" LCD Color Monitor AOC 177Vk 9.2 Trouble Shooting 9.2.1 Main Board 1. NO SCREEN APPEAR No power No power Press power key and look if the picture is normal Please reinsert and make sure the AC of 100-240 is normal...
  • Page 32 17" LCD Color Monitor AOC 177Vk No picture (LED orange) No picture Measure U702 PIN2=3.3V Replace U702 X401 oscillate waveforms are normal Replace X401 Check if the sync signal from computer is output and video cable is connected normally Input the sync signal of...
  • Page 33 17" LCD Color Monitor AOC 177Vk 9.2.2 Power Board 1. No Power Check CN902 pin3= 12V Check AC line volt 110V or 220V Check AC input Check the voltage of C907(+) Check bridge rectified circuit and F901 circuit Check start voltage for the pin3 of IC901...
  • Page 34 17" LCD Color Monitor AOC 177Vk 2. W/LED No Backlight Check C811 (+) =12V Change Q803 Check ON/OFF signal Check main board Check IC801 pin6=12V Change Q805 or Q806 Check the pin1 of IC801 have saw tooth wave Change IC801...
  • Page 35 17" LCD Color Monitor AOC 177Vk 9.2.3 Key Board OSD is unstable or not working Connect Key Pad Board Is Key Pad Board connecting normally ? Replace Button Switch Is Button Switch normally ? Replace Key Pad Board Is Key Pad Board normally ?

  • Page 36: White-Balance, Luminance Adjustment

    6500 color temp. parameter is x = 313±20, y = 329 ±20, Y =180 cd/m 3. Into factory mode of 177Vk Turn on power, press the MENU button, pull out the power cord, and then plug the power cord. Then the factory OSD will be at the left top of the panel.

  • Page 37: Monitor Exploded View

    17" LCD Color Monitor AOC 177Vk 11. Monitor Exploded View DESCRIPTION PART NO. DESCRIPTION PART NO. LENS Q33G4986 STAND-TOP Q34G1842 KEY PAD Q33G4985 VESA BKT 15G5786 BEZEL Q34G1841 STAND-BOTTOM Q34G1843 PANEL CABLE Q33G4987 MAINFRAME H15G8312 BASE BKT Q15G8356 SHIELD Q85G 740...

  • Page 38: Bom List

    17" LCD Color Monitor AOC 177Vk 12. BOM List T77SRTDBF1ACANE Location Part NO. Description AUPC780KK6AP AUDIO BOARD CBPC7SRTA1H1 MAIN BOARD KEPC7HC6 KEY BOARD PWPC742HE1P POWER BOARD 15G5786 1 BKT VESA 26G 800504 3H BARCODE 40G 58162435A MANUAL LABEL 41G780061553A TCO03 CARD...
  • Page 39 17" LCD Color Monitor AOC 177Vk C208 67G215V471 3N ELCAP 470UF +-20% 16V 1 CN201 88G 30214K PHONE JACK 5PIN U201 Q90G6093 2 HEAT SINK U201 56G 616 1 TDA7496L BY ST R207 61G0603102 RST CHIPR 1KOHM +-5% 1/ R208...
  • Page 40 17" LCD Color Monitor AOC 177Vk Q105 57G 417 4 PMBS3904/PHILIPS-SMT(04 Q301 57G 417 6 PMBS3906/PHILIPS-SMT(06 Q302 57G 417 6 PMBS3906/PHILIPS-SMT(06 Q401 57G 417 6 PMBS3906/PHILIPS-SMT(06 Q402 57G 417 6 PMBS3906/PHILIPS-SMT(06 Q403 57G 417 6 PMBS3906/PHILIPS-SMT(06 Q501 57G 417 6...
  • Page 41 17" LCD Color Monitor AOC 177Vk R108 61G0603104 RST CHIPR 100KOHM +-5% R509 61G0603121 RST CHIPR 120 OHM +-5% R510 61G0603121 RST CHIPR 120 OHM +-5% R330 61G0603202 RST CHIPR 2KOHM +-5% 1/ R713 61G0603202 RST CHIPR 2KOHM +-5% 1/...
  • Page 42 17" LCD Color Monitor AOC 177Vk C508 65G0603101 32 100PF +-10% 50V X7R C512 65G0603101 32 100PF +-10% 50V X7R C701 65G0603101 32 100PF +-10% 50V X7R C717 65G0603101 32 100PF +-10% 50V X7R C305 65G0603104 12 0.1UF +-10% 16V X7R...
  • Page 43 17" LCD Color Monitor AOC 177Vk D719 93G 6433P BAV99 D101 93G1004 3 SS14 715G2264 1 MAIN BOARD PCB CN003 33G3802 2 WAFER 2.0MM 2P CN004 33G3802 2 WAFER 2.0MM 2P CN001 33G8027 12 WAFER 2*6P 2.0MM R/A SW001 77G 602 1 CJ...
  • Page 44 17" LCD Color Monitor AOC 177Vk D900 93G1100 1152T DIODE PR1007R 1A/1000V CN902 95G8014 12 42 HARNESS Q51G 6 4508 Q85G0043 1 S SHIELD C901 65G305M1022E2 1000P 400VAC/250VAC C902 65G305M1022E2 1000P 400VAC/250VAC ELCAP L105℃ 1000UF M 1 C926 67G215V1023HS CAP 105℃ 470UF M16V...
  • Page 45 17" LCD Color Monitor AOC 177Vk R834 61G0805360 1F RST CHIPR 3.6KOHM +-1% R924 61G0805360 1F RST CHIPR 3.6KOHM +-1% R826 61G0805361 RST CHIPR 360 OHM +-5% R825 61G0805561 RST CHIPR 560 OHM +-5% R835 61G0805561 RST CHIPR 560 OHM +-5%...
  • Page 46 17" LCD Color Monitor AOC 177Vk C830 65G0805470 31 47PF/50V/0805/NPO C832 65G0805470 31 47PF/50V/0805/NPO C914 65G0805471 22 470PF 25V C809 65G0805473 32 CAP 0805 0.047UFK 50V X C810 65G080556131G 560PF NPO 2% C808 65G0805682 32 CHIP 6.8nF 50V X7R 0805...
  • Page 47 17" LCD Color Monitor AOC 177Vk C920 65G517K102 5T 1000PF 10% Y5P 500V C921 65G517K102 5T 1000PF 10% Y5P 500V C911 67G 2152207RT ELCAP 22UF +-20% 50V 10 34FPE19P03 CASE EEL19 34FPE19P03 CASE EEL19 R909 61G152M10458F6W56 RST MOFR 100KOHM +-5% 2...

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