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19" LCD Color Monitor AOC 919Swa

Service

Horizontal Frequency

30-80 kHz

TABLE OF CONTENTS

Description Page Description Page

SAFETY NOTICE

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.

Table Of Contents.......…….................……...........…........1

Revision List.…........................………................……......2

1. Monitor Specification.................................………........3

2. LCD Monitor Description…………………………….......4

3. Operation Instruction…………...................…...........5

3.1 General Instructions.....................................…...........5

3.2 Control Button……………………………..……...........5

3.3 Adjusting the Picture...........................…............5

4. Input/Output Specification............……………............8

4.1 Input Signal Connector............…..……................8

4.2 Factory Preset Display Modes.........................8

5 Panel Specification.....…………………........................9

5.1 Display Characteristics………………………………9

5.2 Optical Characteristics………………………………..10

5.3 Electrical Characteristics……………….……………..11

6.Block Diagram…….…................………….........13

6.1 Software Flow Chat…….…..........………….........13

6.2 Electrical Block Diagram………...………...…......15

7. Schematic……………………………………………. 17

7.1 Main Board…………..............................................17

7.2 Power Board....……………....................................21

8. PCB Layout..………….......................................24

8.1 Main Board……………......................................24

8.2 Power Board…......................................................26

8.3 Key Board……………….....................................28

9. Maintainability……….......................................28

9.1. Equipments and Tools Requirement.....................29

9.2. Trouble Shooting…………....................................30

10. White-Balance, Luminance adjustment.................36

11.Monitor Exploded View……..……………............38

12. BOM List....……........................................... .........40

CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING

Summary of content (48 pages)

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9" LCD Color Monitor AOC 919Swa Service Service Service Horizontal Frequency 30-80 kHz TABLE OF CONTENTS Description Page Description Page Table Of Contents.......…….................……...........…........1 6.1 Software Flow Chat…….…..........………….........13 Revision List.…........................………................……......2 6.2 Electrical Block Diagram………...………...…......15 1. Monitor Specification.................................………........3 7. Schematic……………………………………………. 17 2.
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19" LCD Color Monitor AOC 919Swa Revision List Revision Date Revision History Remark T99LHDDBWKA1ANE Initial release T992HDDBWKA2ANE A00 Dec.
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19" LCD Color Monitor 1. Monitor Specifications LCD Panel Resolution AOC 919Swa Model name 919Swa Driving system TFT Color LCD Viewable Image Size 48.1cm diagoanl Pixel pitch 0.2835mm(H) x 0.2835mm(V) Video R, G, B Analog lnterface Separate Sync. H/V TTL Display Color 16.7M Colors Dot Clock 135 MHz Horizontal scan range 30 kHz - 83 kHz Horizontal scan Size(Maximum) 408.24mm Vertical scan range 55 Hz - 75 Hz Vertical scan Size(Maximum) 255.
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19" LCD Color Monitor 2. LCD Monitor Description AOC 919Swa The LCD MONITOR will contain a main board, a power board, an 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. Monitor Block Diagram Flat Panel and CCFL backlight CCFL Drive.
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19" LCD Color Monitor 3. Operating Instructions AOC 919Swa 3.1 General Instructions Press the power button to turn the monitor on or off. The other control knobs are located at front panel of the monitor (See Figure ). By changing these settings, the picture can be adjusted to your personal preferences. * The power cord should be connected. * Press the power button to turn on the monitor. The power indicator will light up. 3.2 Control Buttons 1. 2. 3. 4. 5.
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19" LCD Color Monitor AOC 919Swa Text Internet Mode Internet Game Mode Game Movie Mode Movie Sports Mode Sports Gamma1 Adjust to Gamma1 Gamma2 Adjust to Gamma 2 Gamma3 Adjust to Gamma 3 Off Disable dynamic contrast ratio On Enable dynamic contrast ratio Clock 0-100 Adjust picture Clock to reduce Vertical-Line noise. Phase 0-100 Adjust Picture Phase to reduce Horizontal-Line noise H.Position 0-100 Adjust the verticalposition of the picture. V.
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19" LCD Color Monitor AOC 919Swa AutoDetect on or off Disable or Enable AutoDetect Mode Demo on or off Disable or Enable Demo Frame Size 14-100 Adjust Frame Size Brightness 0-100 Adjust Frame Brightness Contrast 0-100 Adjust Frame Contrast H. position 0-100 Adjust Frame horizontal Position V.position 0-100 Adjust Frame vertical Position Bright Frame on or off Disable or Enable Bright Frame H.Position 0-100 Adjust the verticalposition of OSD V.
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19" LCD Color Monitor 4. Input/Output Specification AOC 919Swa 4.1 Input Signal Connector Pin Number 1 2 3 4 5 6 7 8 15-Pin Side of the Signal Cable Video-Red Video-Green Video-Blue N.C. Detect Cable GND-R GND-G GND-B Pin Number 9 10 11 12 13 14 15 15-Pin Side of the Signal Cable +5V Ground N.C. DDC-Serial data H-sync V-sync DDC-Serial clock 4.2 Factory Preset Display Modes STAND Dos-mode VGA VGA SVGA SVGA XGA XGA XGA XGA XGA SXGA SXGA WXGA HORIZONTAL VERTICAL FREQUENCY(kHZ) FREQUENCY(Hz) 31.
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19" LCD Color Monitor 5 Panel Specification AOC 919Swa 5.1 Display Characteristics M190MWW3 The M190MWW3 is a color active matrix thin film transistor (TFT) liquid crystal display (LCD) that uses amorphous silicon TFT as a switching device. It is composed of a TFT LCD panel, a timing controller, voltage reference, common voltage, driver DC-DC converter, column driver, and row driver circuit.
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19" LCD Color Monitor AOC 919Swa Note (1) Please refer to the attached drawings for more information of front and back outline dimensions. 5.
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19" LCD Color Monitor AOC 919Swa 5.3 Electrical Characteristics 1.TFT LCD Module: M190MWW3 Note: A. If it exceeds MIN/MAX values, then "CCFL Life", "ON/OFF Cycle", and "SAFETY" will not be guaranteed. B. CCFL Frequency should be carefully determined to avoid interference between inverter and TFT LCD. C. The voltage over specified value (VCCFLi) should be applied to the lamp more than 1 second after startup. Otherwise, the lamp may not be turned on. The used lamp current is the lamp typical current.
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19" LCD Color Monitor AOC 919Swa TPM190A1 12
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19" LCD Color Monitor 6. Block Diagram AOC 919Swa 6.
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19" LCD Color Monitor AOC 919Swa REMARK: 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. 7) Are the AUTO and SELECT keys pressed? 8) Enter factory mode. 9) Save the power key status into EPROM.Turn on the LED and set it to green color.Scalar initializes. 10) In standby mode? 11) Update the lifetime of back light.
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19" LCD Color Monitor AOC 919Swa 6.2 Electric Block Diagram 6.2.1 Main Board Crystal 24.
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19" LCD Color Monitor AOC 919Swa 6.2.
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19" LCD Color Monitor 7. Schematic AOC 919Swa 7.1 Main Board H_Sy nc R101 V_Sy nc 80 OHM R102 R103 1K 1/16W 5% 1K 1/16W 5% DSUB_H DSUB_V 3 3 R122 VGA_B+ R105 2K2 1/16W 5% R106 C102 C103 2K2 1/16W 5% 22pF 22pF R104 CHIP BEAD C101 390R 1/16W 5% C120 10pF R107 DSUB_B+ 3 DSUB_SOG 3 DSUB_G+ 3 DSUB_R+ 3 0.047uF 75R 1/16W 5% B_GND 10 5 9 4 8 3 7 2 6 1 15 14 DDC1_SDA DSUB_SDA 12 11 B_GND VGA_B+ G_GND VGA_G+ R_GND VGA_R+ VGA_PLUG R109 DSUB_5V 5 C106 390 OHM 1/16W ZD103 UDZSNP5.
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19" LCD Color Monitor AOC 919Swa FB405 VDDA_AD 2,5 1 VCC3.3 2 BEAD C404 VDDDP_AD 0.1uF/16V VSSA_AD VCCLVP VCCK VCCP CMVCC VCC3IO VDDA_AD VDDP_AD 5 CMVCC R465 VDDP_AD FB406 6K8 1/16W 5% 2 BEAD 0.1uF/16V VSSP_AD 2 2 2 2 2 2 2 2 VCC3IO C438 C439 0.1uF/16V GND C407 0.1uF/16V 0.1uF/16V IC PIN 4 C406 VCCLVP C437 C436 10uF/10V 0.1uF/16V 0.1uF/16V R402 1K6 OHM 1/16W 5% SDO CSN SCK SDI VCC3.
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" LCD Color Monitor AOC 919Swa PANEL_VCC 3D CN403 1 2 G S AO3401L VCC3.3D 5 PA1 PB3 PA5 PA7 PA9 PB1 PB3 PB5 PB7 PB9 CMVCCD 5 R433 R435 on_Panel R481 0.1uF/16V47K 1/16W 5% R436 51K OHM 1/16W 4K7 1/16W 5% 3 C419 10K 1/16W 5% on_Panel Q404 PMBS3906 C447 NC Q405 AO3401 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 PANEL_VCC FB402 120OHM CONN C421 100UF25V NC/65G0402104 15 Ripple Current NG PANEL_VCC LVDS R434 PA[0..1] PA0 PA1 3 PA[4..9] OUTPUT CN405 PA[4..
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19" LCD Color Monitor AOC 919Swa ESD_5V CMVCC 9 8 7 6 5 4 3 2 1 D402 CMVCC CMVCC BKLT_VBRI BKLT_EN C425 R449 SR24 NC R437 R439 10K 1/16W 5% 10K 1/16W 5% R478 2 DSUB_5V NC CMVCC1 Q406 CMVCC1 2 R491 Volume Mute BKLT_EN CMVCC 3 CMVCC1 DSUB_5V on_BACKLIGHT 3 R440 4K7 1/16W 5% NC Mute D401 NC/BAV70//93G 64 42 P R438 3.3 OHM 2W 3 2N3904S-RTK/PS NC 3 CN404 VCC3.3 VI VO C424 + C431 3 VCC1.8 U405 GND VCC3.3 1 2 D403 BAT54C 2 ESD_5V CMVCCD 4 FB407 300 OHM VO 2 4 1 0.
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19" LCD Color Monitor AOC 919Swa 7.2 Power Board +16V R805 100R 1/10W 5% ON/OFF D801 LL4148 DIM Q805 PID 2 2 ZD802 RLZ5.6B ZD803 RLZ5.6B D802 LL4148 5K1 1/8W R801 2.4K OHM 1/10W 2 C801 0.047uF 4 3 2 1 G S G S D D D D C819 68pF/3KV C816 22pF/6KV 2 5 LV1 C824 22pF/6KV 1 5 6 7 8 1 L801 4 2 NC 0.
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19" LCD Color Monitor AOC 919Swa L904 FB904 R920 4 2 6 1 D900 PR1007R LL4148 R910 10R 1/4W 2 LD7552DPS IC903 PC123X2Y FZOF R925 STP9NK65ZFP ! 220 OHM 1/4W 1M 1/4W C928 1000pF R914 0R43 5% 2W C902 1000PF/250VAC ! C921 NC R927 R949 100 OHM 1/4W 2.43K OHM 1% 1/10W C935 0.001uF R951 100 OHM 1/4W R942 1K 1/10W 1% R930 2.43K OHM 1% 1/10W C920 1000pF 250V F901 FUSE BOM要变更 C901 1000PF/250VAC L905 CN902 1) 3 +5V DIM ON/OFF 1 R940 NC ZD922 RLZ5.6B L906 2.
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19" LCD Color Monitor AOC 919Swa +5V1 C609 1uF/25V 10K 1/10W 5% R609 IC601 8 7 6 5 4 3 2 1 C601 0.47uF/16V R608 0R05 1/8W +5V1 SE/BTL VOLUME LINGND GND RINBY PASS SHUTDOWN C612 0.1uF/16V R610 10K 1/10W 5% CONN LOUTVDD LOUT+ GND GND ROUT+ VDD ROUT- 9 10 11 12 13 14 15 16 LOUTLOUT+ ROUT+ 1 2 3 4 ROUTCN602 APA2069JITUL R601 10K 1/10W 5% R607 10K 1/10W 5% 100pF 6.2KOHM +-5% 1/10W R605 C606 0.47uF/16V C611 10K 1/10W 5% R606 6.
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19" LCD Color Monitor 8. PCB Layout AOC 919Swa 8.
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19" LCD Color Monitor AOC 919Swa 25
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19" LCD Color Monitor AOC 919Swa 8.
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19" LCD Color Monitor AOC 919Swa 27
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19" LCD Color Monitor AOC 919Swa 8.
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19" LCD Color Monitor 9. Maintainability AOC 919Swa 9.1 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. Service Manual. 8. User Manual.
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19" LCD Color Monitor AOC 919Swa 9.2 Trouble Shooting 9.2.1 Main Board 1. NO SCREEN APPEAR No power No power Press power key and look if the picture is normal NG Please reinsert and make sure the AC of 100-240 is normal NG Reinsert or check the power section NG Replace U404,U405,CN404 OK Measure U404 Vout=3.3V U405 Vout=1.
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19" LCD Color Monitor AOC 919Swa No picture (LED orange) No picture Measure U404 Vout=3.3V U405 Vout=1.
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19" LCD Color Monitor AOC 919Swa White Screen White screen Measure Q404base is low level? NG OK OK NG Replace X401 Check reset circuit of U401 is normal Check FB402,Q405 is broken,or CN405 solder? Check Correspondent component. X401 oscillate waveform is normal NG NG OK Replace U401 OK Replace PANEL 32 Check Correspondent component.
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19" LCD Color Monitor AOC 919Swa 9.2.2 Power Board 1.
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19" LCD Color Monitor AOC 919Swa 2.
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19" LCD Color Monitor AOC 919Swa 9.2.
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19" LCD Color Monitor 10. White- Balance, Luminance Adjustment AOC 919Swa Approximately 30 minutes should be allowed for warm up before proceeding white balance adjustment.
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19" LCD Color Monitor AOC 919Swa 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.
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19" LCD Color Monitor 11.
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19" LCD Color Monitor AOC 919Swa Item 1 2 3 4 5 6 7 8 9 10 Description BEZEL(L19WA-8Q1A) LENS KEY PAD KEY BOARD PANEL POWERBOARD MAIN BOARD MAIN FRAME SPK REAR COVER19" 39 Item 11 12 13 14 15 S1 S2 S3 S4 Description HINGE STAND TOP STAND BASE8S2 FOOT SCREW SCREW SCREW SCREW
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19" LCD Color Monitor 12. BOM List AOC 919Swa 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.
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19" LCD Color Monitor CN404 CN405 R438 CN101 X401 CN001 D001 GND1 CN602 CN804 CN803 CN802 CN801 IC903 NR901 C903 C822 C821 C820 C819 C817 C824 C816 C902 C901 C920 C900 C905 C812 C916 C934 C939 C915 C918 C917 L905 L904 L903 PT801 T901 CN901 CN601 D907 CN902 HS1 L802 L801 L901 IC601 BD901B 033G3802 9B Y W 033G801930F CH JS 040G 45762412B 061G152M33964L 088G 35315F XH 093G 2258B J 033G3802 6H 081G 12 1F GH 009G6005 1 033G3802 4 033G8021 2E F 033G8021 2E F 033G8021 2E F 033G8021 2E F 040G 45762412B 056G 139 3
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19" LCD Color Monitor C423 C426 C424 C427 C421 U405 U404 U102 U103 U401 U406 U101 U402 Q404 Q402 Q401 Q408 Q412 Q411 Q410 Q406 Q405 R466 R469 R476 R419 R418 R473 R472 R471 R420 R412 R411 R113 R110 R456 R455 R453 R441 R118 R103 R102 R461 R462 R467 R475 R482 R487 R488 R447 R449 R460 R120 R121 R404 R407 067G 3051013PB 067G 3051013PB 067G 3051013PB 067G 3051013PB 067G 3151014KB 056G 56327A 056G 563514 056G 662 13 056G 662 13 056G1126 48 056G1133 32 056G1133 34 056G1133 81 057G 417 6 057G 417 6 057G 417 6 057G
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19" LCD Color Monitor R421 R433 R437 R439 R457 R401 R410 R414 R402 R105 R106 R109 R115 R111 R104 R427 R428 R448 R477 R440 R435 R416 R415 R125 R119 R481 R450 R436 R465 R107 R112 R116 R434 C122 C121 C120 C405 C419 C420 C422 C428 C431 C432 C433 C436 C437 C438 C439 C450 C118 C401 C403 C404 C406 C407 C409 061G0402103 061G0402103 061G0402103 061G0402103 061G0402103 061G0402105 061G0402121 061G0402121 061G0402162 061G0402222 061G0402222 061G0402390 0F 061G0402391 JF 061G0402391 JF 061G0402391 JF 061G0402392 061G0
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19" LCD Color Monitor C413 C414 C415 C416 C417 C447 C103 C102 C408 C444 C411 C412 C110 C107 C106 C101 C456 C455 C442 C441 C402 FB407 FB402 FB104 R124 R123 R122 FB406 FB405 R101 FB409 D403 D105 ZD103 ZD104 D402 R003 R005 R004 R002 Q901 D906 D908 IC901 IC801 Q601 Q801 Q903 Q802 065G040210412K 065G040210412K 065G040210412K 065G040210412K 065G040210412K 065G0402105 A5 065G0402220 31 065G0402220 31 065G0402224 17 065G0402224 A5 065G0402330 31 065G0402330 31 065G0402473 12 065G0402473 12 065G0402473 12 065G04
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19" LCD Color Monitor Q803 Q805 Q806 R846 R849 R926 R942 R816 R805 R807 R845 R844 R843 R842 R610 R609 R605 R604 R603 R602 R601 R819 R818 R841 R840 R839 R838 R826 R821 R817 C808 R820 R801 R927 R930 R823 R813 R824 R825 R606 R607 R836 R837 RJ610 R608 R806 R808 R939 R925 R938 R822 R802 R924 R943 R803 R804 057G 759 2 057G 763905 057G 763905 061G0603000 061G0603000 061G0603100 1F 061G0603100 1F 061G0603100 2F 061G0603101 061G0603101 061G0603103 061G0603103 061G0603103 061G0603103 061G0603103 061G0603103 061G0603
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19" LCD Color Monitor R829 RJ802 J802 RJ801 RJ901 RJ805 RJ804 FB902 R910 R962 R961 R951 R950 R949 R935 R920 R919 R918 R901 R902 R912 R906 R904 R905 R909 C611 C610 C932 C805 C613 C612 C807 C806 C818 C815 C810 C602 C601 C606 C603 C928 C811 C907 C924 C930 C931 C940 C608 C609 C804 C813 C814 C909 C801 C802 C941 061G0805682 061G1206000 061G1206000 061G1206000 061G1206000 061G1206000 061G1206000 061G12060004JF 061G1206100 061G1206101 061G1206101 061G1206101 061G1206101 061G1206101 061G1206101 061G1206101 061G1206
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19" LCD Color Monitor C809 C935 C929 C912 D808 D807 D806 D903 D805 D804 D803 D802 D801 D809 ZD902 ZD921 ZD922 ZD803 ZD802 ZD801 SW004 SW005 SW001 SW002 SW003 CN901 T901 IC904 R903 R946 R914 R828 C906 C604 C908 FB602 FB904 FB901 FB903 L906 F901 F902 F903 D901 D900 J836 J835 J834 J833 J832 J831 J830 J829 J826 065G080556131G 065G1206102 72 065G1206102 72 065G1206102 72 093G 64 42 L 093G 64 42 L 093G 64 42 L 093G 6432S 093G 6432S 093G 6432S 093G 6432S 093G 6432S 093G 6432S 093G 6433S 093G 39GA31 T 093G 39S 20
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19" LCD Color Monitor J825 J824 J823 J837 J912 J910 J909 J908 J907 J906 J905 J904 J903 J902 J901 J838 J821 J801 J804 J808 J810 J811 J814 J815 J816 J817 J818 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 715G2824 2 AOC 919Swa JUMPER WIRE JUMPER WIRE JUMPER WIR