AOC 177V Service Manual

17" lcd color monitor horizontal frequency 30-80 khz

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17" LCD Color Monitor
Service
Service
Service
Description
Table Of Contents..........................................................1
Revision List.................................................................2
Important Safety Notice...............................................3
1.Monitor Specification...............................................4
2.LCD Monitor Description........................................5
3.Operation Instruction............................................6
3.1.General Instructions.........................................6
3.2.Control Button......................................................6
3.3 Adjusting the Picture..........................................7
4.Input/Output Specification.......................................9
4.1.Input Signal Connector............................................9
4.2.Factory Preset Display Modes.........................9
4.3.Panel Specification...............................................10
5.Block Diagram.........................................................13
5.1.Software Flow Chart...................................13
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
5.2.Electrical Block Diagram.............................15
6.Schematic......................................................17
6.1 Main Board.........................................................17
6.2 Power Board........................................................22
7.PCB Layout.....................................................24
7.1.Main Board.................................................24
7.2.Power Board..........................................27
7.3 Audio Board.................................................30
7.4.Key Board.........................................................30
8.Maintainability................................................31
8.1.Equipments and Tools Requirement......................31
8.2.Trouble Shooting..........................................32
10.Monitor Exploded View....................................39
11.BOM List........................................................40
SAFETY NOTICE
1
AOC 177V
Horizontal Frequency
30-80 kHz
Page

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Summary of Contents for AOC 177V

  • Page 1: Table Of Contents

    17" LCD Color Monitor AOC 177V Service Service Service Horizontal Frequency 30-80 kHz TABLE OF CONTENTS Description Page Description Page 5.2.Electrical Block Diagram…………..…..…..15 Table Of Contents..……....……...…..1 6.Schematic…………….......…..17 Revision List.…......………....……..2 Important Safety Notice.………….…....……..3 6.1 Main Board……………..........17 1.Monitor Specification......………..4 6.2 Power Board..……..........22 7.PCB Layout..…………........24...
  • Page 2: Revision List

    17" LCD Color Monitor AOC 177V Revision List Revision Date Revision History TPV Model Nov-16-06 First Version Release T76MM6HCF1A2AP...
  • Page 3: Important Safety Notice

    AOC 177V Important Safety Notice Proper service and repair is important to the safe, reliable operation of all AOC Company Equipment. The service procedures recommended by AOC and described in this service manual are effective methods of performing service operations. Some of these service operations require the use of tools specially designed for the purpose. The special tools should be used when and as recommended.
  • Page 4: Monitor Specification

    17" LCD Color Monitor AOC 177V 1. Monitor Specifications Items Description Driving system TFT Color LCD Type M170E5-L0C Size 43.2cm (17.0") Pixel pitch 0.264mm (H) x 0.264mm (V) LCD Panel Viewable angle(CR≥10) 160°(H) 160°(V) Response time (type) 5 ms Display Color 16.7M...
  • Page 5: Lcd Monitor Description

    17" LCD Color Monitor AOC 177V 2. LCD Monitor Description The LCD monitor will contain a main board, power board, audio board and a key board which house the flat panel control logic, brightness control logic and DDC. The power board will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips each voltage.
  • Page 6: Operation Instruction

    17" LCD Color Monitor AOC 177V 3. Operating Instructions 3.1 General Instructions Press the power button to turn the monitor on or off. The control buttons are located in the front of the monitor. By changing these settings, the picture can be adjusted to your personal preferences.
  • Page 7: Adjusting The Picture

    17" LCD Color Monitor AOC 177V 3.3 Adjusting the Picture Adjustment steps: 1. Press the MENU-button to activate the OSD window. 2. Press to select the desired function. 3. Press the MENU-button to select the function that you want to adjust.
  • Page 8 17" LCD Color Monitor AOC 177V User / Red Red Gain from Digital-register. User / Green Green Gain Digital-register. User / Blue Blue Gain from Digital-register. Analog Select input signal from analog source (D-Sub) Input Select Digital Select input signal from digital source (DVI) H.
  • Page 9: Input/Output Specification

    17" LCD Color Monitor AOC 177V 4. Input/Output Specification 4.1 Input Signal Connector Pin No. Description Pin No. Description Red Video Green Video Detect Cable Blue Video DDC-Serial Data Ground H-Sync Red Ground V-Sync Green Ground DDC-Serial Clock Blue Ground...
  • Page 10: Factory Preset Display Modes

    17" LCD Color Monitor AOC 177V 4.2 Factory Preset Display Modes Horizontal Vertical Resolution Standard Frequency Frequency Dos-mode 720 x 400 31.47kHz 70.0Hz 640 × 480 31.47kHz 60.0Hz 640 × 480 37.50kHz 75.0Hz 800 × 600 37.879kHz 60.0Hz SVGA 800 × 600 46.875kHz...
  • Page 11 17" LCD Color Monitor AOC 177V 4.3.2 Optical Characteristics...
  • Page 12 17" LCD Color Monitor AOC 177V 4.3.3 Electrical Characteristics TFT LCD Module: Back Light Unit:...
  • Page 13: Block Diagram

    17" LCD Color Monitor AOC 177V 5. Block Diagram 5.1 Software Flow Chat...
  • Page 14 17" LCD Color Monitor AOC 177V 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 15: Electrical Block Diagram

    17" LCD Color Monitor AOC 177V 5.2 Electric Block Diagram 5.2.1 Main Board Crystal (14.318MHz) LCD interface (X401) (CN101) EEPROM Scalar TSUM56AK PM25LV512 (Include MCU, ADC, OSD) (U402) (U401) H sync Digital V sync signal input D-Sub Connector Connector (CN405)
  • Page 16 17" LCD Color Monitor AOC 177V 5.2.2 Power Board...
  • Page 17: Schematic

    17" LCD Color Monitor AOC 177V 6. Schematic 6.1 Main Board TSUM56AK SCHEMATIC XGA/SXGA LVDS OUTPUT GNDR GNDR GNDG GNDG GNDB GNDB HSY NC HSY NC VCC1.8 VCC3.3 +12V VSY NC VSY NC DDCA_SDA DDCA_SDA DDCA_SCL DDCA_SCL DET_VGA DET_VGA DDC_WP DDC_WP VCC1.8...
  • Page 18 17" LCD Color Monitor AOC 177V SOT-223 U701 VCTRL +3V3 NC/LT1117-18 R702 +3V3   1/16W C701 C703 C704 VCC1.8 100uF/25V C702 VCC1.8 4.7uF/16V D701 1N4148 R703 Q702 BL_ADJ(DC)   1/16W 0V ~ 3.3V 4.7K D702 CHT2907 0V ~ 5V 4.7K 4.7K...
  • Page 19 17" LCD Color Monitor AOC 177V CN405 FB410 1/16W   DB15 RED+ R434 1/16W C432 0.047uF   RED- GREEN+ FB411 1/16W R435 1/16W C433 0.047uF     GREEN- BLUE+ FB412 1/16W R436 1/16W C434 0.047uF     BLUE- PC5V R437 1/16W C435 0.047uF...
  • Page 20 17" LCD Color Monitor AOC 177V VDVI VMPLL VPLL AVDD VDDP VDDC VCC1.8 FB401 VDDC VCC3.3 FB402 AVDD VCC1.8 600 OHM VCC3.3 600 OHM C403 C407 U401 VCC3.3 4.7uF/16V 0.1uF VCTRL VCTRL C404 C405 C406 0.1uF 0.1uF 0.1uF NC/LVACKP/NC RIN0P...
  • Page 21 17" LCD Color Monitor AOC 177V PB[0..5] PB[0..5] CN102 CN103 PA[0..7] RB1P PA[0..7] PA[0..7] RB1N PA[0..7] LVACKP RB2P RA3N FB0N RB3N RA1P LVACKM RB2N RA3P FB0P RB3P RA1N LVA2P RB3P RA2P LVA2M FB1N RB3N RA2N RB2N LVA1P FB1P RA2N RA2P...
  • Page 22: Power Board

    17" LCD Color Monitor AOC 177V 6.2 Power Board R951 47Ω 1/4W 0.001uF/500V R952 C920 47Ω 1/4W 2KBP08M D920 IND CHOKE 3.5uH+-10% DADONG SBT150-10LST R909 T901 0Ω 1/4W L921 F902 100KΩ 2W +12V C907 C925 R931 100uF/450V 470uF/25V R911 C910 10KΩ...
  • Page 23 17" LCD Color Monitor AOC 177V CN801 PT801 POWER X'FMR R836 C835 +12V CONN C816 12pF/3KV CN802 1KΩ 1/8W 0Ω 1/4W R802 R804 R805 R818 R819 300KΩ 1/4W 10KΩ 1/4W 470Ω 1/4W 15Ω 1/4W 15Ω 1/4W C811 470uF/25V C817 CONN...
  • Page 24: Pcb Layout

    17" LCD Color Monitor AOC 177V 7. PCB Layout 7.1 Main Board...
  • Page 25 17" LCD Color Monitor AOC 177V...
  • Page 26 17" LCD Color Monitor AOC 177V...
  • Page 27: Power Board

    17" LCD Color Monitor AOC 177V 7.2 Power Board...
  • Page 28 17" LCD Color Monitor AOC 177V...
  • Page 29 17" LCD Color Monitor AOC 177V...
  • Page 30: Audio Board

    17" LCD Color Monitor AOC 177V 7.3 Audio board 7.4 Key board...
  • Page 31: Maintainability

    17" LCD Color Monitor AOC 177V 8. Maintainability 8.1 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 32: Trouble Shooting

    17" LCD Color Monitor AOC 177V 8.2 Trouble Shooting 8.2.1 Main Board 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 Reinsert or check the...
  • Page 33 17" LCD Color Monitor AOC 177V No picture (LED orange) No picture The button if under X401 oscillate Replace X401 control waveform is normal Check Correspondent Check reset circuit of component U401 is normal Measure U702 PIN2, 4=3.3V Q702 Vc =1.8V...
  • Page 34 17" LCD Color Monitor AOC 177V White screen White screen Measure Q708 base X401 oscillate waveform is normal is high level? Replace X401 Check Q708, Q706, Q704 Check reset circuit of is broken or CN101 solder? U401 is normal Check Correspondent Check Correspondent component.
  • Page 35 17" LCD Color Monitor AOC 177V 8.2.2 Power Board 1) No power Check CN902 pin12 = 12V Check AC line volt 110V or 220V Check AC input Check the voltage of C907 (+) Check bridge rectified circuit and F901 circuit...
  • Page 36 17" LCD Color Monitor AOC 177V 2.) No Backlight Check R802=12V Check adapter and R802 Check ON/OFF signal Check Interface board or main board Check IC801 PIN2=5V Change on/off circuit Check IC801 PIN13 have triangle wave Change IC801 Check IC801 PIN1/PIN15 PWM wave...
  • Page 37 17" LCD Color Monitor AOC 177V 8.2.3 Key Board OSD is unstable or not working Is Key Pad Board connecting normally? Connect Key Pad Board Replace Button Switch Is Button Switch normally? Replace Key Pad Board Is Key Pad Board normally?
  • Page 38: White-Balance, Luminance Adjustment

    6500 color temp. parameter is x = 313±20, y = 329 ±20, Y =180 cd/m 3. Enter into factory mode of 177V 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 39: Monitor Exploded View

    17" LCD Color Monitor AOC 177V 10. Monitor Exploded View...
  • Page 40: Bom List

    17" LCD Color Monitor AOC 177V 11. BOM List T76MM6HCF1A2AP Location Part No. Description 026G 800504 3 BARCODE LABEL 040G 152509 RECYCLE LABEL 040G 152512 RECYCLE LABEL 044G3798 1 EPS(L) 044G3798 2 EPS(R) 045G 88606 PE BAG FOR BASE 045G 88607...
  • Page 41 17" LCD Color Monitor AOC 177V Q15G8356 1 BASE BKT Q33G4985 GM 1L KEY BUTTOM Q34G1840 GM 1B REAR COVER Q34G1842 GM 1B STAND TOP Q34G1843 GM 1B 20 STAND BUTTOM Q34G1845 GM 1B 20 BASE 750GLM70E5C11N PANEL LCD 17" E5-L0C CMO 750GLM70E5C12N PANEL LCD 17"...
  • Page 42 17" LCD Color Monitor AOC 177V 715G1841 1 AUDIO BOARD PCB CBPC786KM6AOP CONVERSION BOARD CN404 033G801714A H PIN HEADER 2*7 R/A CN701 033G8027 12 WAFER 2*6P 2.0MM R/A CN403 033G8027 16 WAFER 16PIN 2.0mm DIP CN101 033G802724B H WAFER 040G 457624 1B...
  • Page 43 17" LCD Color Monitor AOC 177V Q701 057G 417 4 PMBS3904/PHILIPS-SMT(04) Q703 057G 417 4 PMBS3904/PHILIPS-SMT(04) Q706 057G 417 4 PMBS3904/PHILIPS-SMT(04) Q401 057G 417 6 PMBS3906/PHILIPS-SMT(06) Q403 057G 417 6 PMBS3906/PHILIPS-SMT(06) Q402 057G 417 12 T KEC 2N3904S-RTK/PS Q701 057G 417 12 T...
  • Page 44 17" LCD Color Monitor AOC 177V R443 061G0603101 RST CHIPR 100 OHM +-5% 1/10W R442 061G0603101 RST CHIPR 100 OHM +-5% 1/10W R441 061G0603101 RST CHIPR 100 OHM +-5% 1/10W R429 061G0603101 RST CHIPR 100 OHM +-5% 1/10W R428 061G0603101...
  • Page 45 17" LCD Color Monitor AOC 177V R414 061G0603121 RST CHIPR 120 OHM +-5% 1/10W R409 061G0603121 RST CHIPR 120 OHM +-5% 1/10W R703 061G0603202 RST CHIPR 2 KOHM +-5% 1/10W R417 061G0603203 RST CHIPR 20 KOHM +-5% 1/10W R448 061G0603222 RST CHIPR 2.2 KOHM +-5% 1/10W...
  • Page 46 17" LCD Color Monitor AOC 177V C412 065G0603104 32 CHIP 0.1UF 50V X7R C718 065G0603104 32 CHIP 0.1UF 50V X7R C715 065G0603104 32 CHIP 0.1UF 50V X7R C714 065G0603104 32 CHIP 0.1UF 50V X7R C713 065G0603104 32 CHIP 0.1UF 50V X7R...
  • Page 47 17" LCD Color Monitor AOC 177V FB404 071G 56Z601 CHIP BEAD 600 OHM 0805 FB403 071G 56Z601 CHIP BEAD 600 OHM 0805 FB402 071G 56Z601 CHIP BEAD 600 OHM 0805 FB401 071G 56Z601 CHIP BEAD 600 OHM 0805 FB401 071G 56Z601 M...
  • Page 48 17" LCD Color Monitor AOC 177V D701 093G 6432P LL4148 D702 093G 6432P LL4148 D403 093G 6433P BAV99 D404 093G 6433P BAV99 D405 093G 6433P BAV99 D417 093G 6433P BAV99 D418 093G 6433P BAV99 D419 093G 6433P BAV99 D420 093G 6433P...
  • Page 49 17" LCD Color Monitor AOC 177V SW004 077G 602 1 CJ TACT SWITCH SW002 077G 602 1 CJ TACT SWITCH DP001 081G 12 YB GP LED GP34032ME/R003-50-ZY-HB CN002 088G 30217T TO PHONE JACK+SWITCH SMTKEPC6QA1AP KEY BOARD FOR SMT 065G0603101 31...
  • Page 50 17" LCD Color Monitor AOC 177V C825 065G 3J1206ET 12PF 5% SL 3KV TDK C817 065G 3J3096ET 3PF,J,3KV,Z5P C826 065G 3J3096ET 3PF,J,3KV,Z5P C901 065G305M1022E2 1000P 400VAC/250VAC C902 065G305M1022E2 1000P 400VAC/250VAC C902 065G305M1022EM Y2 1000PF +-20% 250VAC C901 065G305M1022EM Y2 1000PF +-20% 250VAC...
  • Page 51 17" LCD Color Monitor AOC 177V L921 073G 253 91 H CHOKE COIL L922 073G 253 91 S CHOKE COIL L921 073G 253 91 S CHOKE COIL T901 080GL17T 33 N POWER X'FMR T901 080GL17T 33 T XFMR FOR POWER TDK...
  • Page 52 17" LCD Color Monitor AOC 177V Q52G6019 14 TAPE Q85G0003 1 SHIELD PW742HE1SMTP POWER BOARD FOR SMT IC901 056G 379 61 LD7575PS SOP-8 IC801 056G 608 10 0Z9938 Q803 057G 417 4 PMBS3904/PHILIPS-SMT(04) Q802 057G 417 4 PMBS3904/PHILIPS-SMT(04) Q801 057G 417 4...
  • Page 53 17" LCD Color Monitor AOC 177V R826 061G0805361 RST CHIPR 360 OHM +-5% 1/8W R817 061G0805430 2F RST CHIPR 43 KOHM +-1% 1/8W R825 061G0805561 560 0805 R835 061G0805561 560 0805 R814 061G0805563 56KOHM 1/10W RJ902 061G1206000 0 OHM 1/8W...
  • Page 54 17" LCD Color Monitor AOC 177V C929 065G0805104 32 CHIP 0.1U 50V X7R C928 065G0805104 32 CHIP 0.1U 50V X7R C916 065G0805104 32 CHIP 0.1U 50V X7R C912 065G0805104 32 CHIP 0.1U 50V X7R C806 065G0805105 22 CHIP 1UF 25V X7R 0805...
  • Page 55 17" LCD Color Monitor AOC 177V ZD921 093G 39S 40 T RLZ 13B LLDS PW1742HDE2AIP POWER BOARD FOR AI CN901 006G 31500 EYELET C907 006G 31502 1.5MM RIVET L902 006G 31502 1.5MM RIVET PT801 006G 31502 1.5MM RIVET PT802 006G 31502 1.5MM RIVET...
  • Page 56 17" LCD Color Monitor AOC 177V Q34G1841 XJA1B BEZEL(17") Q40G 17N61549A RATING LABEL Q40G 58161544A AOC LOGO LABEL Q40G0002615 2B POPLABEL Q44G379861510A CARTON Q45G 88606 14 PE BAG FOR STAND Q52G 1185 65 AOC MIDDLE TAPE Q52G6025 11999 MYLAR Q52G6025 13 1...

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