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AOC WA17W, Service Manual

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AOC WA17W Service Manual Download Page 29

17" LCD Color Monitor                                                                 

AOC WA17W

         

34                                                                                                                  

White screen 

 
 
 
 
 
 
 
 
 
 

 

 

 

 

 

 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

White screen 

X401 oscillate 
waveform is normal 

Check Q601, Q602 is 
broken or CN601 solder? 

Check Correspondent 
component.

 

Replace PANEL 

Check Correspondent 
component.

 

Replace U401 

OK 

OK 

OK

Replace X401 

OK

NG 

NG 

NG 

NG

Check reset circuit of 
U401 is normal 

Measure Q602 base 
is low level? 

Replace U501 

Replace U401 

OK

NG

Summary of Contents for WA17W

Page 1: ...cription 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 10 4 1 Input Signal Connector 10 4 2 Factory Preset Displa...

Page 2: ...17 LCD Color Monitor AOC WA17W 2 Revision List Revision Date Revision History TPV Model A00 Mar 14 2008 First Version Release T77HRTNCMWPUDN...

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: ...log 0 7Vp p standard 75 OHM Positive Video Signal Digital signal Sync Type H V TTL H Frequency 55 5 kHz 70 6 kHz Input V Frequency 55 Hz 75 Hz ON Mode 37W Power Consumption OFF Mode 1W Contrast Ratio...

Page 5: ...ess 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 Board...

Page 6: ...anel of the monitor By changing these settings the picture can be adjusted to your personal preferences The power cord should be connected Connect the video cable from the monitor to the video card Pr...

Page 7: ...o activate it 3 Press or to change the settings of the selected function 4 To exit and save select the exit function If you want to adjust any other function repeat steps 2 3 OSD functions Main Menu I...

Page 8: ...in from Digital register Color Temp User User M Magenta Gain from Digital register Full Enhance on or off Disable or Enable Full Enhance Mode Nature Skin on or off Disable or Enable Nature Skin Mode G...

Page 9: ...e as Input Input Select Analog Select Analog Signal Source as Input Auto Config Auto adjust the picture to default DDC CI Turn ON OFF DDC CI Support Reset yes or no Reset the menu to default Extra Inf...

Page 10: ...ound 15 DDC Serial Clock 8 B Ground DVI connector Pin No Signal Name Pin No Signal Name Pin No Signal Name 1 TMDS Data 2 9 TMDS Data 1 17 TMDS Data 0 2 TMDS Data 2 10 TMDS Data 1 18 TMDS Data 0 3 TMDS...

Page 11: ...469kHz 59 94 Hz 640x480 37 861 kHz 72 809 Hz VGA 640x480 37 5 kHz 75 Hz 800x600 35 156 kHz 56 25 Hz 800x600 37 879 kHz 60 317 Hz 800x600 48 077 kHz 72 188 Hz SVGA 800x600 46 875 kHz 75 Hz 1024x768 48...

Page 12: ...a driving circuit and a back light system This TFT LCD has a 17 0 inch diagonally measured active display area with XGA resolution 900 vertical by 1440 horizontal pixel array and can display up to 16...

Page 13: ...klight Unit 4 3 4 Optical Characteristics Measuring Condition _ Measuring surrounding dark room _ Lamp current IBL 7 5 0 1mA lamp freq FL 50 KHz Inverter TDK TBD315NR 1 _ VDD 5 0V fV 60Hz _ Ambient te...

Page 14: ...17 LCD Color Monitor AOC WA17W 14 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 15: ...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 16: ...2 1 Main Board CN302 DVI Connector Digital Video Signal U401 MCU RTD2120L LF U501 Scalar IC RTD2525LH Include ADC OSD U403 EEPROM AF24BC16 CN301 D Sub Connector H sync V sync RGB EPR_SDA EPR_SCL LCD I...

Page 17: ...M DIM EMI filter Start Circuit R904 R932 R933 PWM Control IC Transformer AC input 12V ON OFF Control PWM Control IC Feedback Circuit Output Circuit Transformer MOSFET Over Voltage Lamp ON OFF 5V Bridg...

Page 18: ...17 LCD Color Monitor AOC WA17W 18 6 Schematic 6 1 Main Board...

Page 19: ...17 LCD Color Monitor AOC WA17W 19...

Page 20: ...17 LCD Color Monitor AOC WA17W 20...

Page 21: ...17 LCD Color Monitor AOC WA17W 21...

Page 22: ...17 LCD Color Monitor AOC WA17W 22...

Page 23: ...2645 54MR R905 NC ZD902 RLZ13B R961 100 1 4W C929 0 001uF R912 220 1 4W R942 1K 1 10W 1 R946 1K 1 4W C903 0 47uF 275V C938 1500pF 1KV ZD922 RLZ5 1B 1 2 CN901 SOCKET 1 2 3 HS4 HEAT SINK 1 2 C922 470uF2...

Page 24: ...T CTRL REF 2IN 2IN F801 0R05 1 4W D817 LL4148WP C823 0 0022uF R835 1M 1 10W 5 D806 LL4148WP R827 1K 1 10W 1 R839 22R 1 8W Q812 PMBS3906 1 2 3 Q813 NC C802 470uF25V 67G215D4714KV R814 1K 1 10W 1 Q808 P...

Page 25: ...0 100pF 65G0603101 31 C106 PWPC721HSY1 R106 5K1 1 10W C101 0 47uF 16V 65G0603474 12 VOL G2545 1 X X 6 070625 C109 1uF 25V 65G0805105 22 FB102 BEAD 71G 55 9 T 1 2 C102 0 47uF 16V 65G0603474 12 LOUT C11...

Page 26: ...OC WA17W 31 8 Maintainability 8 1 Equipments and Tools Requirement 1 Voltmeter 2 Oscilloscope 3 Pattern Generator 4 DDC Tool with and Compatible Computer 5 Alignment Tool 6 LCD Color Analyzer 7 Servic...

Page 27: ...y and look if the picture is normal Please reinsert and make sure the AC of 100 240V is normal Measure U201 PIN2 3V Q502 C 1 8V Reinsert or check the Adapter Inverter section X401 oscillate waveforms...

Page 28: ...picture The button if under control Measure U201 PIN2 3V Q502 C 1 8V X401 oscillate waveform is normal Check U201 Q502 OK OK OK NG Check HS VS from CN301 is normal Replace X401 Check Correspondent com...

Page 29: ...orm is normal Check Q601 Q602 is broken or CN601 solder Check Correspondent component Replace PANEL Check Correspondent component Replace U401 OK OK OK Replace X401 OK NG NG NG NG Check reset circuit...

Page 30: ...ied circuit and F901 circuit Check start voltage for the pin3 of IC901 Check R904 R932 R933 and Change IC901 NG Check the auxiliary voltage is bigger than 10V and smaller than 20V 1 Check IC901 2 Chec...

Page 31: ...r or MB Check ON OFF signal Check Interface board NG OK Check IC801 pin12 5V NG OK Change ON OFF NG OK Check IC801 NG OK Check Q801 Q804 Q811 Q812 Check the output of T801 Check connecter lamp OK NG C...

Page 32: ...7 8 2 3 Key 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 33: ...er cord Then the factory OSD will be at the left top of the panel 4 Bias adjustment Set the Contrast to 50 Adjust the Brightness to 80 5 Gain adjustment Move cursor to F and press MENU key A Adjust Wa...

Page 34: ...oma 7120 RGB value meet the tolerance 100 2 D Adjust sRGB color temperature 1 Switch the chroma 7120 to RGB Mode with press MODE button 2 Switch the MEM channel to Channel 10 with up or down arrow on...

Page 35: ...DB D SUB 089G1748CAA AC SIGNAL CABLE DVI COMLINK E08907 089G179J30N 9A FFC CABLE 089G404A15N IS POWER CORD 095G8014 6D 41 HARNESS 6P 6P 170mm 0M1G 130 5120 SCREW 0M1G 340 8 47 CR3 SCREW 0M1G1730 6120...

Page 36: ...507 061G152M339 64 CHIPR 3 3 OHM 5 2W C405 067G 3151007KV ELCAP 10UF M 50V 105 KINGNICHI C202 067G 3151014KV EC 105 CAP 100UF M 25V C203 067G 3151014KV EC 105 CAP 100UF M 25V C505 067G 3152207KV ELCAP...

Page 37: ...T 40 H XFMR INVERTER DADON CN901 087G 501 32 S AC SOCKET CN101 088G 30214K DC PHONE JACK 5PIN BD901 093G 50460 28 BRIDGE DIODE KBP208G LITEON CN902 095G801410E 51 WIRE HARNESS 705GQ7 57001 Q901 ASS Y...

Page 38: ...RST CHIPR 100 OHM 5 1 16W R410 061G0402101 RST CHIPR 100 OHM 5 1 16W R420 061G0402101 RST CHIPR 100 OHM 5 1 16W R422 061G0402101 RST CHIPR 100 OHM 5 1 16W R430 061G0402101 RST CHIPR 100 OHM 5 1 16W R4...

Page 39: ...4 7 KOHM 5 1 16W R445 061G0402472 RST CHIPR 4 7 KOHM 5 1 16W R444 061G0402472 RST CHIPR 4 7 KOHM 5 1 16W R443 061G0402472 RST CHIPR 4 7 KOHM 5 1 16W R414 061G0402472 RST CHIPR 4 7 KOHM 5 1 16W R202 0...

Page 40: ...16V X7R C304 065G0402473 12 CHIP 0 047uF 16V X7R C306 065G0402473 12 CHIP 0 047uF 16V X7R C307 065G0402473 12 CHIP 0 047uF 16V X7R C309 065G0402473 12 CHIP 0 047uF 16V X7R C311 065G0402473 12 CHIP 0...

Page 41: ...T CHIPR 3 KOHM 5 1 10W Q901 057G 724 11 STP9NK65ZFP HS3 090G6263 1 HEAT SINK 0M1G1730 8120 SCREW HS4 090G6084 1 GP HEAT SINK D905 093G 60257 DIODE SB1060FCT ITO 220AB BY PAN JIT 0M1G1730 8120 SCREW R9...

Page 42: ...3 061G0603106 RST CHIPR 10M OHM 5 1 10W R930 061G0603243 1F RST CHIPR 2 43K OHM 1 1 10W R940 061G0603330 2F RST CHIPR 33K OHM 1 1 10W R927 061G0603360 1F RST CHIPR 3 6K OHM 1 1 10W R811 061G0603472 RS...

Page 43: ...R 300k OHM 5 1 4W R855 061G1206330 RST CHIPR 33 OHM 5 1 4W R856 061G1206330 RST CHIPR 33 OHM 5 1 4W R909 061G1206519 RST CHIPR 5 1 OHM 5 1 4W R900 061G1206684 RST CHIPR 680K OHM 5 1 4W R901 061G120668...

Page 44: ...432S IN4148W D903 093G 6432S IN4148W D817 093G 6432S IN4148W D814 093G 6432S IN4148W D812 093G 6432S IN4148W D805 093G 6432S IN4148W D806 093G 6432S IN4148W D807 093G 6432S IN4148W D801 093G 6433P BAV...

Page 45: ...17 LCD Color Monitor AOC WA17W 51 D901 093G 6038T52T FR103 715G2545 2 PWPC...

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