AOC 177Pk Service Manual Download Page 34 | Manualshive

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AOC 177Pk Service Manual Download Page 34

17" LCD Color Monitor AOC

177Pk

34

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

Measure D701(-)=1.8V
U702 PIN2=3.3V

Reinsert or check the
Adapter/Inverter
section

X401 oscillate waveforms
are normal

Check CN701, D701,
U702, Q702

Replace U401

Replace X401

OK

OK

OK

NG

NG

NG

NG

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Summary of Contents for 177Pk

Page 1: ...tructions 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 Power Supply Requirement 10 4 3 Factory Preset Display Modes 10 4 4 Panel S...

Page 2: ...77Pk 2 Revision List Revision Date Revision History TPV Model A00 Jan 04 08 First Version Release T76CM6DBF1A2AP A01 Apr 08 08 Add TPVDW Model In Item 11 T77SM6DBF1A1ANE A02 Oct 30 08 Add TPVDW Model...

Page 3: ...aracteristics may create 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 im...

Page 4: ...nalog 0 7Vp p standard 75 OHM Positive and TMDS Video Signal Digital signal Sync Type H V TTL H Frequency 30kHz 83kHz Input V Frequency 55 75Hz ON Mode 37W Power Consumption OFF Mode 1W Contrast Ratio...

Page 5: ...ness 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 Monitor Block Diagram AC IN 100V 240V Power Boar...

Page 6: ...cable from the monitor to the video card Press the power button to turn on the monitor the power indicator will light up 3 2 Control Buttons Item Name Within OSD Without OSD 1 Audio 1 Move the cursor...

Page 7: ...e Image Setup Clock Adjust picture Clock to reduce Vertical Line noise H Position Adjust the horizontal position of the picture Image Position V Position Adjust the vertical position of the picture Wa...

Page 8: ...Position Adjust the vertical position of the OSD OSD Setup OSD Timeout Adjust the OSD timeout Language Language N A Select the language you like Information Information N A Show the resolution H V fr...

Page 9: ...lock 8 B Ground VGA connector layout 2 DVI D connector Pin No Description Pin No Description 1 TMDS data 2 13 TMDS data 3 2 TMDS data 2 14 5V Power 3 TMDS data 2 4 Shield 15 GND for 5V 4 TMDS data 4 1...

Page 10: ...of 1 half wave missing per second DC output Voltage 12VDC 5 Current max 3 5 Amp 12V 4 3 Factory Preset Display Modes Standard Resolution Horizontal Frequency Vertical Frequency Dos mode 720 400 31 47...

Page 11: ...17 LCD Color Monitor AOC 177Pk 11 4 4 Panel Specification 4 4 1 Display Characteristics 4 4 2 Optical Characteristics...

Page 12: ...17 LCD Color Monitor AOC 177Pk 12 4 4 3 Electrical Characteristics 1 TFT LCD Module 2 Backlight Unit...

Page 13: ...19 LCD Color Monitor AOC 177Pk 13 5 Block Diagram 5 1 Software Flow Chat 1 2 N Y 5 Y N 1 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...

Page 14: ...e LED and set it to green color Scalar 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 interrup...

Page 15: ...3 Flash Memory PM25LV512 25SCE U402 Scalar IC TSUM56AK Include MCU ADC OSD U401 EEPROM M24C02 U404 H sync V sync RGB SCL_VGA SDA_VGA LCD Interface CN101 D Sub Connector CN405 Crystal 14 318MHz X401 DV...

Page 16: ...19 LCD Color Monitor AOC 177Pk 16 5 2 2 Inverter Power Board...

Page 17: ...3 LVDS OUTPUT 12V PA 14 19 VLCD GPO 0 4 VCC1 8 VLCD_12V B3 3 INPUT RIN GIN BIN VSYNC GNDR GNDG GNDB DET_VGA HSYNC SOG B CLK DET_DVI CLK R G R B G DDCA_SDA DDCA_SCL DDCD_SDA DDCD_SCL 5V DDC_WP 3V3 TSU...

Page 18: ...T VOUT R721 0 1 16W VCC3 3 4 R707 4 7K 1 16W VLCD_12V VCC1 8 R713 NC C702 4 7uF 16V R723 51K 1 16W C717 10uF 16V R714 10K 1 16W GND VCC3 3 4 C713 0 1uF 5V GND R730 0 1 16W 5V R710 NC D C Q703 PMBS3904...

Page 19: ...LK VSI GNDR 4 D411 MLL5232B 5 6V RED R441 100 1 16W FB409 120 OHM R458 100 1 16W R446 1K 1 16W INPUT A B 1 5 Monday May 09 2005 Title Size Document Number Rev Date Sheet of D409 MLL5232B 5 6V DDCA_SCL...

Page 20: ...OHM Option PA13 CN403 CONN 2 4 6 8 10 12 14 16 1 3 5 7 9 11 13 15 HSYNC 3 KEY_AUTO PB5 PB9 C423 22pF R488 NC DDCD_SDA 3 LED_G PB17 PB12 TSUM56AK R415 10K 1 16W R433 NC CLK 3 OUT L R422 4 7K 1 16W C429...

Page 21: ...CE A B 1 5 Monday May 09 2005 Title Size Document Number Rev Date Sheet of RB3P 3 3V B1N GB1P PA11 PB4 PA8 PB15 R94 CLKBP PB12 FR2P R104 NC NC PB2 RA3N LVA1M BB2N PB14 FCLKP CLKV RA2P NC RA1N NC 5V CN...

Page 22: ...INL VAROUT_L VOLUME VAROUT_R NC INR SVR STBY MUTE GND OUTR VS VS OUTL GND GND GND C205 470uF 16V Doc 1 Audio A 1 1 Wednesday January 25 2006 Title Size Document Number Rev Date Sheet of C206 0 47uF 25...

Page 23: ...16 1N4148W C923 680uF 25V C914 470pF 25V D915 1N4148W C927 470uF 16V 5V L922 IND CHOKE 3 5uH 10 DADONG C912 0 1uF D922 31DQ06FC NR901 NTCR R900 330K 1 4W Doc Title B 1 1 Tuesday September 19 2006 Titl...

Page 24: ...4 15 16 DRV1 VDDA TIMER DIM ISEN VSEN OVPT NC1 NC2 ENA LCT SSTCMP CT GNDA DRV2 PGND R829 15 1 4W C825 12pF 3KV D803 BAV70 3 1 2 R814 56K 1 8W C805 0 001uF R826 390 1 8W C816 12pF 3KV C837 0 1 4W C822...

Page 25: ...17 LCD Color Monitor AOC 177Pk 25 7 PCB Layout 7 1 Main Board 715G1558 2 2...

Page 26: ...17 LCD Color Monitor AOC 177Pk 26...

Page 27: ...17 LCD Color Monitor AOC 177Pk 27...

Page 28: ...17 LCD Color Monitor AOC 177Pk 28 7 2 Audio Board 715G1841 1...

Page 29: ...17 LCD Color Monitor AOC 177Pk 29 7 3 Power Board 715G1823 2...

Page 30: ...17 LCD Color Monitor AOC 177Pk 30...

Page 31: ...17 LCD Color Monitor AOC 177Pk 31...

Page 32: ...17 LCD Color Monitor AOC 177Pk 32 7 4 Key Board 715G1819 1 2...

Page 33: ...177Pk 33 8 Maintainability 8 1 Equipments 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 Servi...

Page 34: ...s power key and look if the picture is normal Please reinsert and make sure the AC of 100 240 is normal Measure D701 1 8V U702 PIN2 3 3V Reinsert or check the Adapter Inverter section X401 oscillate w...

Page 35: ...ge No picture The button if under control Measure D701 1 8V U702 PIN2 3 3V Replace U401 X401 oscillate waveform is normal Check D701 U702 Q702 OK OK OK OK NG Check HS VS from CN405 is normal Replace X...

Page 36: ...oscillate waveform is normal Check Q706 Q704 is broken or CN101 solder Check Correspondent component Replace PANEL Check Correspondent component Replace U401 OK OK OK Replace X401 OK NG NG NG NG Check...

Page 37: ...Check bridge rectified circuit and F901 circuit Check start voltage for the pin8 of IC901 Check R911 C910 and Change IC901 NG Check the auxiliary voltage is bigger than 10V and smaller than 20V 1 Che...

Page 38: ...Check ON OFF signal Check Interface board NG OK Check IC801 pin2 5V NG OK Change Q802 or Q803 NG OK Check IC801 PIN5 6 NG OK Check Q805 Q806 Check the output of PT801 PT802 Check connecter lamp OK NG...

Page 39: ...8 2 3 Keypad Board OSD is unstable or not working Is Key Pad Board connecting normally Connect Key Pad Board Is Button Switch normally Replace Button Switch Y N N Is Key Pad Board normally Replace Key...

Page 40: ...de of AOC 177Pk 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 4 Bias adjustment Set the Contrast to...

Page 41: ...0 7 Repeat above procedure item 4 5 6 until chroma 7120 RGB value meet the tolerance 100 2 C Adjust sRGB color temperature 1 Switch the chroma 7120 to RGB Mode with press MODE button 2 Switch the MEM...

Page 42: ...17 LCD Color Monitor AOC 177Pk 42 10 Monitor Exploded View...

Page 43: ...17 LCD Color Monitor AOC 177Pk 43...

Page 44: ...17 LCD Color Monitor AOC 177Pk 44...

Page 45: ...DVI DVI CABLE 089G404A15N IS POWER CORD 095G8014 16655 KEY HARNESS 095G8018 3522 LVDS CABLE 0M1G 130 5120 SCREW 0M1G 330 4120 SCREW 0M1G 330 5 47 CR3 SCREW 0M1G 330 6 47 CR3 SCREW 0M1G1140 6128 CR3 SC...

Page 46: ...70G160061511A CD MANUAL 001G6023 1 SCREW 037G 564 1 HINGE 0M1G 130 6225 CR3 SCREW 0M1G 130 8120 SCREW 0M1G 330 6 47 CR3 SCREW 0M1G2430 5 47 CR3 SCREW 0Q1G 130 6120 SCREW T3X6 0Q1G 330 5120 SCREW Q12G6...

Page 47: ...00UF 20 25V C712 067G215L101 4R LOW E S R 100UF 20 25V CN405 088G 35315F H D SUB 15PIN CN405 088G 35315F HJ SOC SUBD H 15P F CN406 088G 35424F H DV1 CONNECTOR 24PIN CN406 088G 35424FHCJ DVI 24PIN X401...

Page 48: ...67G 2154713KT 470UF 16V C811 067G215H471 4K LOW E S R 470UF 20 25V C820 067G215H471 4K LOW E S R 470UF 20 25V C925 067G215H471 4K LOW E S R 470UF 20 25V C926 067G215L1023HS 1000UF 16V 10 16 LL C927 06...

Page 49: ...3102 RST CHIP 1K 1 10W 5 R207 061G0603102 RST CHIP 1K 1 10W 5 R211 061G0603203 RST CHIPR 20 KOHM 5 1 10W R210 061G0603203 RST CHIPR 20 KOHM 5 1 10W R202 061G0603204 RST CHIPR 200 KOHM 5 1 10W C212 065...

Page 50: ...3000 RST CHIPR 0 OHM 5 1 10W FB411 061G0603000 RST CHIPR 0 OHM 5 1 10W FB410 061G0603000 RST CHIPR 0 OHM 5 1 10W R462 061G0603100 RST CHIPR 10 OHM 5 1 10W R463 061G0603100 RST CHIPR 10 OHM 5 1 10W R46...

Page 51: ...10 KOHM 5 1 10W R461 061G0603103 RST CHIPR 10 KOHM 5 1 10W R413 061G0603103 RST CHIPR 10 KOHM 5 1 10W R415 061G0603103 RST CHIPR 10 KOHM 5 1 10W R416 061G0603103 RST CHIPR 10 KOHM 5 1 10W R424 061G060...

Page 52: ...04 32 CHIP 0 1UF 50V X7R C413 065G0603104 32 CHIP 0 1UF 50V X7R C412 065G0603104 32 CHIP 0 1UF 50V X7R C411 065G0603104 32 CHIP 0 1UF 50V X7R C410 065G0603104 32 CHIP 0 1UF 50V X7R C409 065G0603104 32...

Page 53: ...CHIP BEAD 600 OHM 0805 FB402 071G 56Z601 CHIP BEAD 600 OHM 0805 FB403 071G 56Z601 CHIP BEAD 600 OHM 0805 FB404 071G 56Z601 CHIP BEAD 600 OHM 0805 FB405 071G 56Z601 CHIP BEAD 600 OHM 0805 FB406 071G 5...

Page 54: ...6433P BAV99 D404 093G 6433P BAV99 D403 093G 6433P BAV99 D417 093G 6433P BAV99 D418 093G 6433P BAV99 D422 093G 6433P BAV99 D423 093G 6433P BAV99 D419 093G 6433P BAV99 D420 093G 6433P BAV99 D421 093G 64...

Page 55: ...7G 667 47 FET FQPF8N60C FAIRCHILD HS4 Q900 090G6264 1 HEAT SINK 0M1G1730 8128 CR3 SCREW R909 061G152M10458F 100K OHM 5 2W 096G 29 6 H S TUBE 005T 42 1 CUSHION 012T 372 1 silicon D920 093G 60226 STPS20...

Page 56: ...KOHM 1 1 8W R830 061G0805150 2F RST CHIPR 15 KOHM 1 1 8W R811 061G0805154 RST CHIPR 150KOHM 5 1 8W R929 061G0805240 1F 2 4KOHM 1 10W 1 R926 061G0805330 2F 33 KOHM 1 10W 1 R841 061G0805360 0F RST CHIP...

Page 57: ...0 1U 50V X7R C930 065G0805104 32 CHIP 0 1U 50V X7R C931 065G0805104 32 CHIP 0 1U 50V X7R C806 065G0805105 22 CHIP 1UF 25V X7R 0805 C823 065G0805152 32 CHIP 1500PF 50V X7R 0805 C822 065G0805152 32 CHIP...

Page 58: ...G 60222452T 220KOHM 5 1 6W 715G1841 1 AUDIO BOARD PCB C209 067G 2151007NT KY50VB10M TP5 5 11 5 C210 067G 2151007NT KY50VB10M TP5 5 11 5 C209 067G 2151007RT LOW E S R 10UF 20 50V C210 067G 2151007RT LO...

Page 59: ...8162435A MANUAL LABEL 41G780061553A TCO03 CARD 50G 600 3 HANDLE2 50G 600 4 HANDLE1 52G 1186 SMALL TAPE 78G 322 1A KL SPK 8OHM 1 5W KUAIDA 78G 322 1A KR SPK 8OHM 1 5W KUAIDA 89G 17356G554 AUDIO CABLE 1...

Page 60: ...P 470UF 20 16V 105 NC CN201 88G 30214K PHONE JACK 5PIN U201 Q90G6093 2 HEAT SINK R207 61G0603102 RST CHIPR 1KOHM 5 1 10W R208 61G0603102 RST CHIPR 1KOHM 5 1 10W R201 61G0603183 RST CHIPR 18KOHM 5 1 10...

Page 61: ...6V 105 JI CN405 88G 35315F HD D SUB CONN F ATTACHED SCREW CN406 88G 35424F N DVI 24PIN CONN F X401 93G 22 53 J 14 31818MHZ 32PF 49US U401 56G 562108 TSUM56AK U702 56G 563 7 AIC1084 33PM U406 56G 643 9...

Page 62: ...53 61G0603101 RST CHIPR 100 OHM 5 1 10W R454 61G0603101 RST CHIPR 100 OHM 5 1 10W R455 61G0603101 RST CHIPR 100 OHM 5 1 10W R456 61G0603101 RST CHIPR 100 OHM 5 1 10W R458 61G0603101 RST CHIPR 100 OHM...

Page 63: ...10W R475 61G0603392 RST CHIPR 3 9KOHM 5 1 10W R437 61G0603471 RST CHIPR 470 OHM 5 1 10W R405 61G0603472 RST CHIPR 4 7KOHM 5 1 10W R422 61G0603472 RST CHIPR 4 7KOHM 5 1 10W R423 61G0603472 RST CHIPR 4...

Page 64: ...X7R C713 65G0603104 32 CHIP 0 1UF 50V X7R C714 65G0603104 32 CHIP 0 1UF 50V X7R C715 65G0603104 32 CHIP 0 1UF 50V X7R C718 65G0603104 32 CHIP 0 1UF 50V X7R C421 65G0603220 31 CAP 0603 22PF 50V NPO C4...

Page 65: ...BAV99 D421 93G 6433P BAV99 D422 93G 6433P BAV99 D423 93G 6433P BAV99 D424 93G 6433P BAV99 D401 93G 39S 45 T RLZ36B BY ROHM D402 93G 39S 45 T RLZ36B BY ROHM D425 93G 39S 45 T RLZ36B BY ROHM D701 93G 6...

Page 66: ...5762412B CBPC LABEL 51G 6 4500 RTV IC902 56G 139 3A PC123Y22FZOF NR901 61G 58080 WT RST NTCR 8 OHM R916 61G152M43864L RST MOFR 0 43 OHM 5 2WS C909 63G107K474 US 0 47UF 10 C817 65G 3J3096ET 3PF J 3KV Z...

Page 67: ...HIPR 10 OHM 5 1 8W R821 61G0805100 3F RST CHIPR 100KOHM 1 1 8W R831 61G0805100 3F RST CHIPR 100KOHM 1 1 8W R911 61G0805100 3F RST CHIPR 100KOHM 1 1 8W R927 61G0805101 RST CHIPR 100 OHM 5 1 8W R930 61G...

Page 68: ...3 RST CHIPR 10KOHM 5 1 4W R808 61G1206103 RST CHIPR 10KOHM 5 1 4W R905 61G1206103 RST CHIPR 10KOHM 5 1 4W R931 61G1206103 RST CHIPR 10KOHM 5 1 4W R818 61G1206150 RST CHIPR 15 OHM 5 1 4W R819 61G120615...

Page 69: ...65G0805471 31 CHIP 470PF 50V NPO C809 65G0805473 32 CAP 0805 0 047UFK 50V X7R D801 93G 64 42 PP BAV70 SOT 23 D803 93G 64 42 PP BAV70 SOT 23 D802 93G 6433P BAV99 D804 93G 6433P BAV99 ZD801 93G 39S 24 T...

Page 70: ...MGFR 3MOHM 5 1 2W R832 61G212Y305 KT RST MGFR 3MOHM 5 1 2W D901 93G 6038T52T FR103 IC921 56G 158 10 T AZ431AZ AE1 TO 92 C910 65G 1K152 1T6921 1 5nF 1K Y5P 10 C920 65G517K102 5T 1000PF 10 Y5P 500V C92...

Page 71: ...02 3 SPRING Q20G 042 1 LIFT BKT DIE CASTING Q33G0076 GM 1L TAND COVER Q33G0099 GM 1L LOCK HOLDER Q33G4998 GM 1L VESA COVER Q33G4999 GM 1L HINGE COVER Q33G5001 GM 1L LIFT COVER Q33G5003 GM 1L STOP MYLO...

Page 72: ...2A PAPER BOARD 044G9003210 CORNER PAPER E08902 089G 715HAB D2 SIGNAL CABLE 089G410C18N IS POWER CORD WALL OUT FOR UK 0M1G 330 6120 SCREW 42A9930014 0M1G2640 10125 SCREW 0Q1G 330 10120 SCREW FOR FP RC...

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