AOC 919swa Service Manual
Have a look at the manual AOC 919swa Service Manual online for free. It’s possible to download the document as PDF or print. UserManuals.tech offer 65 AOC manuals and user’s guides for free. Share the user manual or guide on Facebook, Twitter or Google+.
19 LCD Color Monitor AOC 919Swa 31 No picture (LED orange) No picture OK OK NG NG Measure U404 Vout=3.3V U405 Vout=1.8V Replace U404,U405,CN404 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 computer, or change the cable Replace U401 NG OK
19 LCD Color Monitor AOC 919Swa 32 White Screen White screen Measure Q404base is low level? X401 oscillate waveform is normal Check FB402,Q405 is broken,or CN405 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
19 LCD Color Monitor AOC 919Swa 33 9.2.2 Power Board 1. No Power Check ZD902 = 16V Check AC line volt 110V or 240V Check AC input Check the voltage of C905(+) Check bridge rectified circuit and F901 circuit Check start voltage for the pin3 of IC901 Check R904,R905,R906 and Change IC901 NG Check the auxiliary voltage 1) Check IC901,T901 2) Check OVP circuit OK OK NG Check IC903,IC904,Q901,D906,D907 OK Check IC901 pin8 PWM wave OK Check IC901 NG NG NG OK NG
19 LCD Color Monitor AOC 919Swa 34 2. W/LED No Backlight Check C812 (+) =16V NG OK Change adapter and MB Check ON/OFF signal Check main board NG OK Check IC801 pin15=16V NG OKChange Q801 Check the pin13 of IC801 have saw tooth wave NG Change IC801 Check PT801 have the output of square of wave at short Change C819,C820,C821,C822 Check the output of PT801 OK NG OK NG Change PT801 Check connecter & lamp OK
19 LCD Color Monitor AOC 919Swa 35 9.2.3 Key Board OK OK OSD is unstable or not working Is Keypad board connecting normally? Is Button Switch normally? Is Keypad board normally? Check main board Connect Keypad Board Replace Button Switch Replace Keypad Board NG NG NG OK
19 LCD Color Monitor AOC 919Swa
36
10. White- Balance, Luminance Adjustment
Approximately 30 minutes should be allowed for warm up before proceeding white balance adjustment.
Before started adjust white balance , please set the Chroma-7120 MEM Channel 3 to Warm (6500K) color, MEM
Channel 4 to Normal (7300K) color, MEM Channel 9 to Cool (9300K) color , and MEM Channel 10 to sRGB color
( our Warm color parameter is x = 283 ±30, y = 297 ±30, Y=180cd/m
2; Normal color parameter is x = 301 ±30, y =
317 ±30, Y=190cd/m
2; Cool color parameter is x = 313 ±30, y = 329 ±30, Y = 200 cd/m2; sRGB color parameter
is x = 313 ±30, y = 329 ±30, Y = 180cd/m2)
How to setting MEM channel you can reference to chroma 7120 user guide or simple use “ SC” key and
“ NEXT” Key to modify xyY value and use “ID” key to modify the TEXT description Following is the procedure
to do white-balance adjust .
2. Setting the color temp. you want
A. MEM.CHANNEL 3 (Warm color):
Warm color temp. parameter is x = 283 ±30, y = 297 ±30, Y=180cd/m
2
B. MEM.CHANNEL 4 (Normal color):
Normal color temp. parameter is x = 301 ±30, y = 317 ±30, Y=190cd/m
2
C. MEM.CHANNEL 9 (Cool color):
Cool color temp. parameter is x = 313 ±30, y = 329 ±30, Y = 200 cd/m2
D. MEM.CHANNEL 10 (sRGB color):
sRGB color temp. parameter is x = 313 ±30, y = 329 ±30, Y = 180cd/m2
3. Into Factory mode of AOC 919Swa
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 50; Adjust the Brightness to 90.
5. Gain adjustment:
Move cursor to “-F-” and press MENU key
A. Adjust Warm (6500K) color-temperature
1. Switch the chroma-7120 to RGB-Mode (with press “MODE” button)
2. Switch the MEM.channel to Channel 3 (with up or down arrow on chroma 7120)
3. The LCD-indicator on chroma 7120 will show x = 283 ±30, y = 297 ±30, Y=180cd/m
2
4. Adjust the RED of color3 on factory window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN of color3 on factory window until chroma 7120 indicator reachedthe value G=100
6. Adjust the BLUE of color3 on factory window until chroma 7120 indicator reached the value B=100
7. Repeat above procedure (item 4,5,6) until chroma 7120 RGB value meet the tolerance =100±2
B. Adjust Normal (7300K) color-temperature
1. Switch the chroma-7120 to RGB-Mode (with press “MODE” button)
2. Switch the MEM.channel to Channel 4(with up or down arrow on chroma 7120)
3. The LCD-indicator on chroma 7120 will show x = 301 ±30, y = 317 ±30, Y=190cd/m
2
4. Adjust the RED of color3 on factory window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN of color3 on factory window until chroma 7120 indicator reachedthe value G=100
6. Adjust the BLUE of color3 on factory window until chroma 7120 indicator reached the value B=100
7. Repeat above procedure (item 4,5,6) until chroma 7120 RGB value meet the tolerance =100±2
19 LCD Color Monitor AOC 919Swa 37 C. Adjust Cool (9300K) color-temperature 1. Switch the Chroma-7120 to RGB-Mode (with press “MODE” button) 2. Switch the MEM. Channel to Channel 9 (with up or down arrow on chroma 7120) 3. The LCD-indicator on chroma 7120 will show x = 313 ±30, y = 329 ±30, Y = 200 cd/m2 4. Adjust the RED of color1 on factory window until chroma 7120 indicator reached the value R=100 5. Adjust the GREEN of color1 on factory window until chroma 7120 indicator reached the value G=100 6. Adjust the BLUE of color1 on factory window until chroma 7120 indicator reached the value B=100 7. Repeat above procedure (item 4,5,6) until chroma 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. Swit ch the MEM.channel to Channel 10 (with up or down arrow on chroma 7120) 3. The LCD-indicator on chroma 7120 will show x = 313 ±30, y = 329 ±30, Y = 180cd/m2 4. Adjust the RED of color3 on factory window until chroma 7120 indicator reached the value R=100 5. Adjust the GREEN of color3 on factory window until chroma 7120 indicator reachedthe value G=100 6. Adjust the BLUE of color3 on factory window until chroma 7120 indicator reached the value B=100 7. Repeat above procedure (item 4,5,6) until chroma 7120 RGB value meet the tolerance =100±2 E. Turn the Power-button off to quit from factory mode.
19 LCD Color Monitor AOC 919Swa 38 11. Monitor Exploded View
19 LCD Color Monitor AOC 919Swa 39 Item Description Item Description 1 BEZEL(L19WA-8Q1A) 11 HINGE 2 LENS 12 STAND TOP 3 KEY PAD 13 STAND 4 KEY BOARD 14 BASE8S2 5 PANEL 15 FOOT 6 POWERBOARD S1 SCREW 7 MAIN BOARD S2 SCREW 8 MAIN FRAME S3 SCREW 9 SPK S4 SCREW 10 REAR COVER19
19 LCD Color Monitor AOC 919Swa 40 12. BOM List Note: The parts information listed below are for reference only, and are subject to change without notice. Please go to http://cs.tpv.com.cn/hello1.asp for the latest information. T99LHDDBWKA1ANE Location Part NO. Description Remark 040G 58162435A P/N LABEL FOR MANUAL PE BAG 041G780061553A TCO03 CARD 050G 600 1 W WHITE STRAP (1G004991) 050G 600 3 HANDLE2 050G 600 4 HANDLE 1 052G 1150 C INSULATING TAPE 052G 1186 SMALL TAPE 052G 1207 A Conductive Tape 45mm *25mm *0.08mm 052G 1211 B Conductive Tape 85mm *40mm *0.09mm 052G 1211527 Conductive Tape 75mm *45mm *0.08mm 052G6019 1 INSULATING TAPE E07801 078G 322514 K SPK 8 OHM 1.5W 43X18 280 320mm KUAIDA 089G 173 56 4B AUDIO CABLE E08902 089G 715HAAE01 SIGNAL CABLE 089G179J30N517 FFC CABLE E08901 089G404A15N IS POWER CORD E09503 095G8014 6TE01 HARNESS 6P-6P 160MM 0D1G1730 8120 SCREW 0M1G 130 5120 SCREW 705GH834068 19 STAND ASSY E750 750GLJ190W3011N000 PANEL M190MWW3 R01 KS IVO AM1G1740 12 47 CR3 SCREW H15G0245O02 MAIN FRAME H26G 800504 2A barcode H40G 19N61579A ID LABEL H40G 582615 9B CARTON LABEL H40G 58261510A TCO BASIC SILVE LABEL H41G780061597A QSG H44G9033101 EPS H44G9033201 EPS H44G9033615 5B CARTON H45G 77 6 PE PACKING H45G 87 18 4H A EPE COVER H70G200961521C CD MANUAL KEPC7QAK KEY BOARD PWPC9941LHD1 POWER BOARD Q33G0170ABJ 1L0100 key pad Q33G0171 1 1C0100 LENS Q34G0265ABJC8B0100 REAR COVER19 Q34G0316BBLC1B0130 BEZEL(L19WA-8Q1A) Q45G 76 28 H A PE BAG FOR MANUAL Q50G 4 10 TIE (Y1900221) Q52G 1185 99 big carton tape for aoc AM1G1740 10120 SCREW(M4*10) H34G0026AED 1B0100 STAND Q34G0299AED 1B0130 BASE8S2 Q37G0067015 HINGE 756GH9CB A1048 MAIN BOARD-CBPC9HDA1H1 U402 056G1133 81 SST25LF020A-33-4C-SAE SMTCR-U402 100GAHL9001W11 MCU ASSY-056G1133 81 CN408 033G3802 6B Y W WAFER