AOC 712SI Service Manual Download Page 41 | Manualshive

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AOC 712SI Service Manual Download Page 41

17" LCD Color Monitor

AOC 712Si

41

9.2.3 Key Board

Y

OSD is unstable or not working

Is Keypad Board connecting normally

?

Connect Keypad Board

Is Button Switch normally

?

Replace Button Switch

Y

N

N

Is Keypad Board Normally?

Replace Keypad Board

N

Y

Check Main Board

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Summary of Contents for 712SI

Page 1: ...g the Picture 8 4 Input Output Specification 10 4 1 Analog Connector 10 4 2 Factory Preset Display Modes 10 5 Panel Specification 11 5 1 General Feature 11 5 2 Optical Characteristics 11 5 3 Electrica...

Page 2: ...te shock fire or other hazards Under no circumstances should the original design be modified or altered without written permission from AOC AOC assumes no liability express or implied arising out of a...

Page 3: ...LCD Color Monitor AOC 712Si 3 Revision List Revision Date Revision History TPV Model T77CNNNKHAA1FIE A00 Apr 21 2007 First Version Release T77CNNMDHAA4NIE All manuals and user guides at all guides co...

Page 4: ...e 1W Input Connector 15 pin D Sub Input Video Signal Analog 0 7Vp p standard 75 OHM Positive Maximum Screen Size Horizontal 338mm Vertical 270mm Power Source 100 240VAC 47 63Hz Environmental Operating...

Page 5: ...17 LCD Color Monitor AOC 712Si 5 Warm Color Cool Color User Color temperature sRGB Reset Exit Regulatory Compliance CE FCC cULus TUV S All manuals and user guides at all guides com...

Page 6: ...The power board will provide AC to DC voltage to drive the backlight of panel and the main board chips each voltage RS232 Connector For white balance adjustment in factory mode Power Board Include Ad...

Page 7: ...r Button LED 4 Contrast 5 MENU ENTER Power Button Press this button to turn the monitor ON or OFF Power Indicator Blue Power On mode Orange Off mode MENU ENTER Activate OSD menu when OSD is OFF or act...

Page 8: ...below describes the function of each OSD icon Main Menu Item Main Menu Icon Sub Menu Item Sub Menu Icon Description Contrast Contrast from Digital register Luminance Brightness Backlight Adjustment Fo...

Page 9: ...OSD V Position Adjust the verticalposition of the OSD OSD Setup OSD Timeout Adjust the OSD timeout Language Language N A Set OSD language Information Information N A Show the resolution H V frequency...

Page 10: ...B Ground VGA Connector layout 1 5 6 10 11 15 4 2 Factory Preset Display Modes STANDARD RESOLUTION HORIZONTAL FREQUENCY VERTICAL FREQUENCY Dos mode 720 x 400 31 47kHz 70 0Hz 640 480 31 47kHz 60 0Hz VG...

Page 11: ...Panel Specification 5 1 General Characteristics 5 2 Optical Characteristics The optical characteristics are measured under stable conditions at 25 2 Room Temperature All manuals and user guides at all...

Page 12: ...17 LCD Color Monitor AOC 712Si 12 5 3 Electrical Characteristics TFT LCD MODULE BACKLIGHT UNIT All manuals and user guides at all guides com...

Page 13: ...17 LCD Color Monitor AOC 712Si 13 6 Block Diagram 6 1 Monitor Exploded View All manuals and user guides at all guides com...

Page 14: ...17 LCD Color Monitor AOC 712Si 14 6 2 Software Flow Chart 1 2 N Y 5 Y N 10 Y N 12 Y N 7 Y N 6 4 3 8 9 14 11 13 Y N 15 Y N 16 17 19 Y N 18 All manuals and user guides at all guides com...

Page 15: ...reen color Scaler initializes 10 In standby mode 11 Update the lifetime of back light 12 Check the analog port are there any signals coming 13 Does the scalar send out an interrupt request 14 Wake up...

Page 16: ...17 LCD Color Monitor AOC 712Si 16 6 3 Electrical Block Diagram 6 3 1 Main Board 6 3 2 Inverter Power Board All manuals and user guides at all guides com a l l g u i d e s c o m...

Page 17: ...17 LCD Color Monitor AOC 712Si 17 7 Schematic 7 1 Main Board All manuals and user guides at all guides com...

Page 18: ...17 LCD Color Monitor AOC 712Si 18 All manuals and user guides at all guides com...

Page 19: ...17 LCD Color Monitor AOC 712Si 19 All manuals and user guides at all guides com...

Page 20: ...17 LCD Color Monitor AOC 712Si 20 All manuals and user guides at all guides com...

Page 21: ...17 LCD Color Monitor AOC 712Si 21 All manuals and user guides at all guides com a l l g u i d e s c o m...

Page 22: ...17 LCD Color Monitor AOC 712Si 22 All manuals and user guides at all guides com...

Page 23: ...17 LCD Color Monitor AOC 712Si 23 All manuals and user guides at all guides com...

Page 24: ...17 LCD Color Monitor AOC 712Si 24 All manuals and user guides at all guides com...

Page 25: ...17 LCD Color Monitor AOC 712Si 25 All manuals and user guides at all guides com...

Page 26: ...17 LCD Color Monitor AOC 712Si 26 All manuals and user guides at all guides com a l l g u i d e s c o m...

Page 27: ...17 LCD Color Monitor AOC 712Si 27 7 2 Inverter Power Board All manuals and user guides at all guides com...

Page 28: ...17 LCD Color Monitor AOC 712Si 28 All manuals and user guides at all guides com...

Page 29: ...17 LCD Color Monitor AOC 712Si 29 8 PCB Layout 8 1 Main Board All manuals and user guides at all guides com...

Page 30: ...17 LCD Color Monitor AOC 712Si 30 8 2 Power Board All manuals and user guides at all guides com...

Page 31: ...17 LCD Color Monitor AOC 712Si 31 All manuals and user guides at all guides com a l l g u i d e s c o m...

Page 32: ...17 LCD Color Monitor AOC 712Si 32 8 3 Key Board All manuals and user guides at all guides com...

Page 33: ...ility 9 1 Equipment and Tools Requirement 1 Voltmeter 2 Oscilloscope 3 Pattern Generator 4 DDC Tool with an IBM Compatible Computer 5 Alignment Tool 6 LCD Color Analyzer 7 Service Manual 8 User Manual...

Page 34: ...or Rewrite SW Check U3 U4 5v Check U2 supply voltage Check adapter and connector Check key circuit if ok Check U2 U3 and U4 if OK Change defective component Check U2 pin PWR RST Change defective OK OK...

Page 35: ...k C29 and OK Change defective NG OK The button under control Check reset signal of U2 pin17 Change U2 NG NG Check waveforms of U2 pin50 and pin51 Check Y1 C29 supply voltage Change defective NG NG OK...

Page 36: ...r or bad NG Check PWR_EN is high voltage Change U2 Check L1 supply voltage OK NG Change Q3 L1 NG Check output of Pin4 from IC3 OK Pin 6 oscillate is normal NG Check C81 NG Change C81 NG Check IC3 OK C...

Page 37: ...ignal connector NG Change U2 OK Check U5 D15 D16 C55 C56 OK Change defective component NG Check the missing color the input Check signal connector if OK NG Check signal source NG OK Check U2 pin77 pin...

Page 38: ...Picture shake Check Vcom 4 35V signal of which is normal If VR1 adjust to Vcom by hand NG Check VDDA if normal NG Check D21 Q6 NG Change defective t Change VR1 NG Adjust picture to normal All manuals...

Page 39: ...901 circuit Check the voltage of C907 NG Check start voltage for the pin8 of IC901 Check R903 Change IC901 OK OK OK NG NG 1 Check IC901 2 Check R904 D903 circuit Check the auxiliary voltage is bigger...

Page 40: ...pin9 12V NG OK Change Q201 or Q202 Check IC801 PIN2 5V NG OK Change on off circuit Check IC201 PIN13 have triangle wave NG OK Change U201 Check IC201 PIN1 PIN15 PWM wave NG Check Q802 Q803 Drain wave...

Page 41: ...le or not working Is Keypad Board connecting normally Connect Keypad Board Is Button Switch normally Replace Button Switch Y N N Is Keypad Board Normally Replace Keypad Board N Y Check Main Board All...

Page 42: ...Channel 3 with up or down arrow on chroma 7120 3 The LCD indicator on chroma 7120 will show x 296 20 y 311 20 Y 180 cd m2 4 Adjust the RED of color1 on factory window until chroma 7120 indicator reach...

Page 43: ...REW M3X4 M1G 330 6 47 CR3 SCREW 3X6mm M1G 340 6 47 CR3 SCREW M1G 340 8225 CR3 SCREW 4 8mm M1G1130 6128 CR3 SCREW M1G1140 6128 CR3 SCREW M1G1730 6128 CR3 SCREW M3x6 Q1G 330 8128 CR3 SCREW 3X8mm 705GH73...

Page 44: ...03105 12 CHIP 1UF 16VX7R 0603 D001 93G 39S 34 T UDZS5 6B D002 93G 39S 34 T UDZS5 6B 715G2253 1 2 KEY BOARD PCB L901 S73L17450VH LINE FILTER CN801 33G8021 2E U WAFER CN802 33G8021 2E U WAFER CN803 33G8...

Page 45: ...A 600V D904 93G3010 1 31DQ10FC 705G 780 57 54 Q901 ASS Y 705G 780 93 16 D901 ASS Y IC901 56G 564911 IC TEA1532AT S08 IC801 56G 608 10 OZ9938GN Q801 57G 417 4 PMBS3904 PHILIPS SMT 04 Q806 57G 417 4 PMB...

Page 46: ...OHM 5 R915 61G0805300 2F RST CHIPR 30KOHM 1 1 R917 61G0805390 1F RST CHIPR 3 9KOHM 1 R824 61G0805390 2F RST CHIPR 39KOHM 1 1 R911 61G0805472 RST CHIPR 4 7KOHM 5 R916 61G0805510 1F RST CHIPR 5 1KOHM 1...

Page 47: ...22 CAIP CAP 0 22 uF 25V X7 C815 65G0805225 27 2 2UF C823 65G0805225 27 2 2UF C804 65G0805471 31 CHIP 470PF 50V NPO C814 65G0805471 31 CHIP 470PF 50V NPO C817 65G0805471 31 CHIP 470PF 50V NPO C821 65G0...

Page 48: ...J808 95G 90 23 TINCOATEDCOPPER J809 95G 90 23 TINCOATEDCOPPER J810 95G 90 23 TINCOATEDCOPPER J811 95G 90 23 TINCOATEDCOPPER J812 95G 90 23 TINCOATEDCOPPER J813 95G 90 23 TINCOATEDCOPPER J814 95G 90 2...

Page 49: ...0G6263 1 HEAT SINK M1G1730 8128 CR3 SCREW 90G6263 1 HEAT SINK D901 93G 60245 SP10150 M1G1730 8128 CR3 SCREW A34G0053 GM 1B STAND TOP A34G0054 GM 1B STAND BOTTOM A34G0097 GM 1B 33 BASE A37G0007 9 HINGE...

Page 50: ...61G0603000 RST CHIPR 0 OHM 5 1 R82 61G0603000 RST CHIPR 0 OHM 5 1 R85 61G0603000 RST CHIPR 0 OHM 5 1 R86 61G0603000 RST CHIPR 0 OHM 5 1 R88 61G0603000 RST CHIPR 0 OHM 5 1 R90 61G0603000 RST CHIPR 0 O...

Page 51: ...03101 RST CHIPR 100 OHM 5 R5 61G0603101 RST CHIPR 100 OHM 5 R6 61G0603101 RST CHIPR 100 OHM 5 R62 61G0603101 RST CHIPR 100 OHM 5 R64 61G0603101 RST CHIPR 100 OHM 5 R67 61G0603101 RST CHIPR 100 OHM 5 R...

Page 52: ...HIPR 1 3KOHM 1 R146 61G0603140 1F RST CHIPR 1 4KOHM 1 R120 61G0603150 9F RST CHIPR 15 OHM 1 1 R25 61G0603153 RST CHIPR 15KOHM 5 1 R26 61G0603153 RST CHIPR 15KOHM 5 1 R38 61G0603153 RST CHIPR 15KOHM 5...

Page 53: ...0603383 9F RST CHIPR 38 3 OHM 1 R142 61G0603383 9F RST CHIPR 38 3 OHM 1 R105 61G0603453 2F RST CHIPR 45 3KOHM 1 R131 61G0603464 9F RST CHIPR 46 4 OHM 1 R40 61G0603470 RST CHIPR 47 OHM 5 1 R11 61G06034...

Page 54: ...7R C17 65G0603103 326805 0 01UF 10 50V X7R C20 65G0603103 326805 0 01UF 10 50V X7R C85 65G0603103 326805 0 01UF 10 50V X7R C102 65G0603104 126805 0 1UF 10 16V X7R C103 65G0603104 126805 0 1UF 10 16V X...

Page 55: ...6805 0 1UF 10 16V X7R C39 65G0603104 126805 0 1UF 10 16V X7R C4 65G0603104 126805 0 1UF 10 16V X7R C41 65G0603104 126805 0 1UF 10 16V X7R C43 65G0603104 126805 0 1UF 10 16V X7R C44 65G0603104 126805 0...

Page 56: ...20 326805 CHIP 22PF 50V X7R C10 65G0603224 126805 CHIP 0 22UF 50V X7R C81 65G0603272 326805 CHIP 2700 PF 50V X7R C50 65G0805224 176805 MLCC 0805 0 22UF Z16V Y C51 65G0805224 176805 MLCC 0805 0 22UF Z1...

Page 57: ...M D23 93G 39PA34 T DIODE MM3Z7V5B SEMTECH D28 93G 39S 14 T ZENER DIODE UDZ33 3B SO D11 93G 39S 34 T UDZS5 6B D15 93G 39S 34 T UDZS5 6B D16 93G 39S 34 T UDZS5 6B D17 93G 39S 34 T UDZS5 6B D7 93G 39S 34...

Page 58: ...G414A15N IS POWER CORD 750GLV70M8Q61N PANEL CLAA170EA08QI 000 A33G0067 KG L KEY PAD A34G0095 KGA9B BEZEL H40G 17N61540A ID LABEL H40G 58161512A 712Si 8ms POP LABEL H41G7800615 7B WARRANTY BOOKLIST H41...

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