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22” LCD Color Monitor                                   Topview  

32 

 

 

 

Summary of Contents for A2281Wd+

Page 1: ... Monitor Description 5 3 Operation Instructions 6 3 1 General Instructions 6 3 2 Control Buttons 6 3 3 Adjusting the Picture 7 4 Input Output Specification 10 4 1 Input Signal Connector 10 4 2 Factory Preset Display Modes 11 4 3 Panel Specification 12 5 Block Diagram 17 5 1 Software Flow Chart 17 5 2 Electrical Block Diagram 19 6 Schematic 21 6 1 Main Board 21 6 2 Power Board 25 6 3 Key Board 27 7...

Page 2: ...22 LCD Color Monitor Topview A2281Wd 2 Revision List Revision Date Revision History TPV Model A00 Apr 3 09 Initial Release TCRSMANAWLTVHN ...

Page 3: ...y characteristics 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 implied arising out of any unauthorized modification of design Servicer assumes all liability FOR PRODUCTS CONTAINING LASER DANGER Invisible laser radiation when open AVOID DIRECT EXPOSURE TO BEAM C...

Page 4: ...Clock 146MHz Max Resolution 1680 x 1050 60Hz Plug Play VESA DDC1 2BTM ON Mode 49W EPA ENERGY STAR OFF Mode 1W D Sub 15pin Input Connector DVI D 24pin Analog 0 7Vp p standard 75 OHM Positive Input Video Signal Digital signal Horizontal 473mm Maximum Screen Size Vertical 296mm Power Source 100 240V 50 60Hz 1 5A Operating Temp 0 to 50 C Storage Temp 20 to 60 C Environmental Considerations Operating H...

Page 5: ...ol 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 AC IN 100V 240V Power Board Flat Panel and CCFL Backlight Main Board Key Board RS232 Connector For white balance adjustment in factory mode HOST Computer CCFL Drive Video Signal DDC Monitor Block Diagram ...

Page 6: ...r button to turn on the monitor the power indicator will light up 3 2 Control Buttons External Control Button 1 SOURCE 2 Auto Adjust button Exit 3 ECO Mode 4 Aspect control 5 MENU ENTER 6 Power button Front Panel Control Power Button Press this button to turn the monitor ON or OFF and display the monitor s state Power Indicator Blue Power On mode Orange Off mode MENU ENTER Activate OSD menu when O...

Page 7: ... is off and then press power button to turn the monitor on To un lock the OSD press and hold the MENU button while the monitor is off and then press power button to turn the monitor on 3 3 Adjusting the Picture Adjustment steps Press the MENU button to activate the OSD window Press or to navigate through the functions Once the desired function is highlighted press the MENU button to activate it If...

Page 8: ...e Setup V Position Adjust the vertical position of the picture Warm Recall Warm Color Temperature from EEPROM Normal Recall Normal Color Temperature from EEPROM Cool Recall Cool Color Temperature from EEPROM sRGB Recall SRGB Color Temperature from EEPROM User B Blue Gain from Digital register User G Green Gain from Digital register User R Red Gain from Digital register User Y Yellow Gain from Digi...

Page 9: ...ight Frame H Position Adjust the horizontal position of OSD V Position Adjust the vertical position of OSD Timeout Adjust the OSD Timeout OSD Setup Language Select the OSD language Digital Select Digital Signal Source as Input Input Select Analog Select Analog Signal Source as Input Auto Config Auto adjust the picture to default Select full format for display Aspect Control Select 4 3 format for d...

Page 10: ...al Clock 8 Blue Ground 15 Pin D Sub connector 1 5 6 10 11 15 Pin No Description Pin No Description 1 TMDS Data2 13 TMDS Data3 2 TMDS Data2 14 5V Power 3 TMDS Data 2 4 Shield 15 GND return for 5V H sync V sync 4 TMDS Data4 16 Hot Plug Detect 5 TMDS Data4 17 TMDS Data0 6 DDC Clock 18 TMDS Data0 7 DDC Data 19 TMDS Data 0 5 Shield 8 Analogue Vertical Sync 20 TMDS Data5 9 TMDS Data1 21 TMDS Data5 10 TM...

Page 11: ...40x480 37 500kHz 75 Hz 800x600 35 156kHz 56 Hz 800x600 37 879kHz 60 Hz 800x600 48 077kHz 72 Hz SVGA 800x600 46 875kHz 75 Hz 1024x768 48 363kHz 60 Hz 1024x768 56 476kHz 70 Hz 1024x768 57 515kHz 72 Hz XGA 1024x768 60 023kHz 75 Hz 1280x1024 63 981kHz 60 Hz 1280x1024 79 976kHz 75 Hz SXGA 1280x960 60 000kHz 60 Hz 1440x900 55 935kHz 60 Hz WXGA 1440x900 70 635KHz 75Hz WSXGA 1680x1050 65 290kHz 60Hz ...

Page 12: ...iquid crystal display LCD that uses amorphous silicon TFT Thin Film Transistor as switching components This model is composed of a TFT LCD panel a driver circuit and a back light unit The resolution of a 22 is 1680 x 1050 and this model can display up to 16 7 millions colors 4 3 1 General Specifications ...

Page 13: ...22 LCD Color Monitor Topview A2281Wd 13 4 3 2 Optical Characteristics Optical Specifications ...

Page 14: ...22 LCD Color Monitor Topview A2281Wd 14 ...

Page 15: ...22 LCD Color Monitor Topview A2281Wd 15 4 3 3 Electrical Characteristics TFT LCD Module ...

Page 16: ...22 LCD Color Monitor Topview A2281Wd 16 Back Light Unit ...

Page 17: ...22 LCD Color Monitor Topview A2281Wd 17 5 Block Diagram 5 1 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 ...

Page 18: ...rn on the 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 interrupt request 14 Wake up the scalar 15 Are there any signals coming from analog port 16 Display No connection Check Signal Cable message And go into standby mode after the message disappear 17 Pro...

Page 19: ...Electrical Block Diagram 5 2 1 Main Board Crystal 14 318MHZ X401 FLASH ROM SST25LF020A U402 Scalar TSUMU58EHL Include ADC OSD MCU U401 Panel Interface CN301 EEPROM M24C04 U403 Key Control Interface CN402 D Sub Connector CN101 DVI Connector CN102 ...

Page 20: ...r Rectifier Transformer Output Rectifier 5V 16V Main Board Inverter Circuit Power Switching Sense Resistor PWM Control IC Photo Couple Sampling 16V DC Switching MOS Transformer Resonance NET High Voltage Output IC Power Supply Converter PWM Control IC Open Lamp Protection Current Sampling ...

Page 21: ...F RXCN FB103 BEAD 1 2 DSUB_B 2 C120 NC ESD_VCC DSUB_G 2 C106 0 047uF R133 10K 1 16W 5 DGND GND POWER VGA_G DSUB_R 2 VGA_B RX1P ESD_VCC1 R129 10R 1 16W 5 R116 75R 1 16W 5 ESD_VCC2 C108 0 047uF C104 22pF C110 0 047uF FB105 300 OHM VGA_B RX1N DDC1_SCL C112 NC C103 22pF C109 5pF 50V DVI_5V C118 NC ESD_VCC DSUB_R 2 VGA_G C101 NC ESD_VCC2 DSUB_H 2 VGA_G C114 0 047uF DSUB_SCL VGA_R FB104 300 OHM DSUB_5V ...

Page 22: ...1uF 16V C305 100uF25V LVB2M LVA1M PANEL_VCC LVB0M RXEC RXE3 RXO3 PA6 LVBCKM 2 LVB2M R305 0 OHM 5 1 8W RXE1 LVA1P R301 330 OHM 1 4W LVA2P PA5 LVA2P PB2 RXO3 RXOC LVA1P R302 4K7 1 16W 5 LVA0P LVA0M RXO1 RXO1 RXOC LVB1P LVB1M PB 0 9 G PA4 LVACKP PA 0 9 PB3 LVB3P LVA2P LVB0M CN303 NC CONN 2 4 6 8 10 12 14 16 18 20 22 24 1 3 5 7 9 11 13 15 17 19 21 23 LVA3P RXE2 LVB3M RXO2 PB7 1 LVA3P CN301 CONN 1 2 3 ...

Page 23: ...OUT VIN Mute Q701 2N3904S RTK PS CMVCC1 BKLT EN R705 10K 1 16W 5 C706 100UF25V D701 SM340A CN701 CONN 1 2 3 4 5 6 7 8 9 C710 0 1uF 16V FB704 NC 300 OHM R710 NC R702 10K 1 16W 5 C711 0 1uF 16V C705 0 1uF 16V R703 10K 1 16W 5 VCC3 3 PANEL_ID VCC3 3 D702 BAT54C 3 1 2 C709 0 1uF 16V C707 100UF25V Q702 KN2907AS PANEL_ID 2 Mute 2 FB703 300 OHM C704 100UF25V VCC3 3 BKLT EN VCC3 3 VCC1 8 F B 4 6 Friday No...

Page 24: ...S SI SCK HOLD VDD AVDD LF_B EE_WP VPLL EE_WP PB3 R430 NC 0R05 1 16W Volume 4 C438 NC F C 5 6 Friday Nov ember 28 2008 称爹 5 0 SCALER OEM MODEL Size Rev Date Sheet of TPV MODEL PCB NAME 称爹 T P V Top Victory Electronics Co Ltd Key Component 絬 隔 瓜 絪 腹 VDDP FB404 300OHM R449 47K 1 16W 5 Q404 NC AVDD DDC1_SCL 1 R445 NC 100R 1 16W 5 C402 10UF50V PB 0 9 R401 390 OHM 1 16W RX1N 1 DDC2_SDA 1 R442 10K 1 16W ...

Page 25: ... R912 220 OHM 1 4W R961 100 OHM 1 4W C931 0 1uF R914 0 43 OHM 5 2WS R943 470R 1 8W Q903 PMBS3904 BOM要变更 R924 150R 1 8W 5 FB901 BEAD 1 2 L906 jump C904 NC C939 1000uF 25V R918 100 OHM 1 4W R949 100 OHM 1 4W c938 NC Q901 STP9NK65ZFP R946 150OHM2W R930 2 43K OHM 1 1 10W C934 1000uF 25V R939 1K 1 8W D900 PR1007R C916 1000uF 25V R938 10K 1 8W FB903 BEAD 1 2 ZD902 RLZ18B R915 0 047uF 25V D903 LL4148 IC9...

Page 26: ... Q803 RK7002 Q802 RK7002 C821 22pF 3KV R849 RST CHIP MAX 0R05 1 10W LV4 ZD802 RLZ5 6B 1 2 Q801 PMBS3904 R838 1M 1 10W 5 ZD801 RLZ5 6B 1 2 R803 5K1 1 8W C803 1000PF 50V NPO R850 100K 1 10W 5 LV1 C807 1uF R830 NC C818 220pF R839 1M 1 10W 5 R822 20K OHM 1 1 8W LV3 C820 68pF 3KV R815 NC CT D808 BAV70 3 1 2 L802 L 1 2 4 3 R819 100K 1 10W 5 C824 27PF6KV ZD803 RLZ5 6B 1 2 SST R802 22R 1 8W DIM LV3 C802 0...

Page 27: ... 1 4W SGND C005 150PF R006 0R05 1 10W SOURCE LED_BLUE SW003 SW 2 1 3 4 5 C001 150PF LBADC2 ZD006 NC UDZSNP5 6B SGND CONNECTOR SGND AUTO C006 NC 0 1uF POWER ZD004 NC UDZSNP5 6B C009 NC 0 1uF SGND ZD001 NC UDZSNP5 6B ZD005 NC UDZSNP5 6B R003 0R05 1 10W SGND MENU C011 NC 0 1uF POWER R004 2K 1 10W 5 UP SW005 SW 2 1 3 4 5 VOL D B 2 2 Saturday May 31 2008 715G2836 1 称爹 Q SERIES 6KEY KEYPAD OEM MODEL Siz...

Page 28: ...22 LCD Color Monitor Topview A2281Wd 28 7 PCB Layout 7 1 Main Board 715G2883 1 6 ...

Page 29: ...22 LCD Color Monitor Topview A2281Wd 29 ...

Page 30: ...22 LCD Color Monitor Topview A2281Wd 30 7 2 Power Board 715G2824 2 ...

Page 31: ...22 LCD Color Monitor Topview A2281Wd 31 ...

Page 32: ...22 LCD Color Monitor Topview A2281Wd 32 ...

Page 33: ...22 LCD Color Monitor Topview A2281Wd 33 7 3 Key Board 715G2836 1 ...

Page 34: ...ew A2281Wd 34 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 Service Manual 8 User Manual ...

Page 35: ...ss power key and look if the picture is normal Please reinsert and make sure the AC of 100V 240V is normal Reinsert or check the power section Check if X401 oscillate waveforms are normal Check C704 1 8V U701Vout 3 3V OK OK NG NG NG Check CN701 or replace U701 and C704 Replace U401 Replace X401 NG OK ...

Page 36: ...mal Replace U401 Replace X401 Check C704 1 8V U701Vout 3 3V Check Correspondent component Replace U401 Check X401 oscillate waveform is normal Check CN701 or replace U701 and C704 OK OK OK OK OK NG NG NG NG Check reset circuit of U401 is normal Check HS VS from CN101 is normal Replace X401 Check Correspondent component NG NG OK OK ...

Page 37: ...n Measure Q302 base is low level X401 oscillate waveform is normal Check CN301 is solder and U301 is OK 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 ...

Page 38: ...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 is bigger than 10V and smaller than 20V 1 Check IC901 2 Check D900 D901 circuit OK OK NG Check Q901 Q903 IC903 IC904 ZD921 ZD922 OK Check IC901 pin8 PWM wave OK Check IC901 NG NG ...

Page 39: ...Check main board NG OK Check IC801 PIN2 5V NG OK Change ON OFF circuit Check IC801 PIN13 have triangle wave NG OK Change IC801 Check IC801 PIN1 PIN15 PWM wave NG OK Check IC801 Check Q805 Q806 Drain wave NG Check the output of PT801 Check D801 D802 D803 D804 Check connecter lamp feedback and protect circuit OK NG Change PT801 OK ...

Page 40: ...40 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 OK NG NG Is Key Pad Board normally Replace Key Pad Board OK NG OK Check Main Board ...

Page 41: ...22 LCD Color Monitor Topview A2281Wd 41 9 Monitor Exploded View ...

Page 42: ...ARNESS 6P 6P 208MM 2nd source E09502 095G8014 6X 51 HARNESS 6P 6P 216MM 0M1G 130 5120 SCREW 0M1G1730 6120 SCREW 42 D020523 705GQ834221 22 LCD STAND BASE ASS Y A37G0055 1 HINGE AM1G1740 12 47 CR3 SCREW Q12G6600 6 FOOT Q34G0306AED 1B0100 STAND Q34G0307AED 1B0133 BASE 8S2 E750 750GLSC0L0152N PANEL LTM220M1 L01 8TB RTB SZ SEC 2nd source E750 750GLSC0L015CN PANEL LTM220M1 L01 ATN 8TN FQ SEC E750 750GLS...

Page 43: ...EC 100UF M 25V 6 3 11 C704 067G 3151014KB EC 100UF M 25V 6 3 11 C706 067G 3151014KB EC 100UF M 25V 6 3 11 U401 056G 562567 IC TSUMU58EHL LF U701 056G 585 4A IC AP1117E33L 13 U103 056G 662 13 IC AZC099 04S SOT23 6L U104 056G 662 13 IC AZC099 04S SOT23 6L U105 056G 662 13 IC AZC099 04S SOT23 6L U106 056G 662 13 IC AZC099 04S SOT23 6L U107 056G 662 13 IC AZC099 04S SOT23 6L U403 056G1133 32 IC M24C04...

Page 44: ...0402101 RST CHIPR 100 OHM 5 1 16W R417 061G0402101 RST CHIPR 100 OHM 5 1 16W R425 061G0402101 RST CHIPR 100 OHM 5 1 16W R428 061G0402101 RST CHIPR 100 OHM 5 1 16W R429 061G0402101 RST CHIPR 100 OHM 5 1 16W R431 061G0402101 RST CHIPR 100 OHM 5 1 16W R104 061G0402102 RST CHIPR 1 KOHM 5 1 16W R103 061G0402102 RST CHIPR 1 KOHM 5 1 16W R706 061G0402102 RST CHIPR 1 KOHM 5 1 16W R413 061G0402103 RST CHIP...

Page 45: ...73 RST CHIPR 47 KOHM 5 1 16W R304 061G0402473 RST CHIPR 47 KOHM 5 1 16W R139 061G0402682 RST CHIP 6K8 1 16W 5 R410 061G0402682 RST CHIP 6K8 1 16W 5 R108 061G0402750 RST CHIPR 75 OHM 5 1 16W R112 061G0402750 RST CHIPR 75 OHM 5 1 16W R116 061G0402750 RST CHIPR 75 OHM 5 1 16W R102 061G0603000 RST CHIP MAX 0R05 1 10W FB403 061G0805000 F RST CHIPR 0 OHM 5 1 8W FENGHUA R305 061G0805000 F RST CHIPR 0 OHM...

Page 46: ...C 0402 0 1UF K 16V X5R C431 065G0402104 15 MLCC 0402 0 1UF K 16V X5R C432 065G0402104 15 MLCC 0402 0 1UF K 16V X5R C403 065G0402104 15 MLCC 0402 0 1UF K 16V X5R C302 065G0402104 15 MLCC 0402 0 1UF K 16V X5R C301 065G0402104 15 MLCC 0402 0 1UF K 16V X5R C115 065G0402104 15 MLCC 0402 0 1UF K 16V X5R C103 065G0402220 31 CHIP 22PF 50V NPO C104 065G0402220 31 CHIP 22PF 50V NPO C401 065G0402224 17 CAP C...

Page 47: ...1 T RLZ5 6B D701 093G3004 3 SM340A 715G2883 1 6 MAIN BOARD PCB 709G2883 QS001 CONSUMPTIVE ASS Y 052G 2191 A PAPER TAPE 052G6026 3 MESH PRINTTING PAPER 709G2883 QA001 CONSUMPTIVE ASS Y KEPC8QC3 KEY BOARD CN001 033G3802 6H WAFER 6P RIGHT ANGLE PITCH 2 0 SW005 077G 600 1GCJ TACT SWITCH TSPB 2 NP SW006 077G 600 1GCJ TACT SWITCH TSPB 2 NP SW003 077G 600 1GCJ TACT SWITCH TSPB 2 NP SW004 077G 600 1GCJ TA...

Page 48: ... J 3KV SL C821 065G 3J6806ET CAP CER 68PF J 3KV SL C822 065G 3J6806ET CAP CER 68PF J 3KV SL C817 065G 6J2096ET 2PF 5 SL 6KV C920 065G306M1022BP 1000PF Y1 CAP C902 065G306M1022BP 1000PF Y1 CAP C901 065G306M1022BP 1000PF Y1 CAP C900 065G306M2222BP 2200PF 20 250VAC C816 065T 6J2706ET 27PF 5 SL 6KV TDK C824 065T 6J2706ET 27PF 5 SL 6KV TDK C905 067G 40Z12115K EC 120UF V 450V 20 40MM C812 067G215H102 4K...

Page 49: ...SS Y D908 093G 60251 FCQ10U06 D908 093G 60526 SCHOTTKY MBRF1060CT ITO 220AB 0M1G 930 8120 SCREW Q90G6263 6 HEAT SINK 709G2824 QM001 CONSUMPTIVE ASS Y 055G 2 ALCOHOL 055G 23524 WELDING FLUX WITHOUT PB Q55G 100625 TIN STICK_LOW ARGENTUM IC901 056G 379 98 IC LD7552DPS SOP 8 IC801 056G 608 10 IC OZ9938GN B SOIC 16 Q903 057G 417 4 PMBS3904 PHILIPS SMT 04 Q801 057G 417 4 PMBS3904 PHILIPS SMT 04 Q806 057...

Page 50: ...03203 RST CHIPR 20 KOHM 5 1 10W R801 061G0603242 RST CHIPR 2 4 KOHM 5 1 10W R927 061G0603243 1F RST CHIPR 2 43K OHM 1 1 10W R930 061G0603243 1F RST CHIPR 2 43K OHM 1 1 10W R824 061G0603270 1F RST CHIPR 2 7 KOHM 1 1 10W R823 061G0603430 0F RST CHIPR 430 OHM 1 1 10W R825 061G0603511 RST CHIPR 510 OHM 5 1 10W R836 061G0603623 RST CHIPR 62 KOHM 5 1 10W R837 061G0603912 RST CHIPR 9 1 KOHM 5 1 10W R806 ...

Page 51: ... 5 1 OHM 5 1 4W C803 065G0603102 31 CHIP 1000PF 50V NPO C932 065G0603102 32 1000PF 10 50V X7R C805 065G0603103 32 CAP CHIP 0603 0 01UF K 50V X7R C806 065G060310512K T CAP CHIP 0603 1UF K 16V X7R C807 065G060310512K T CAP CHIP 0603 1UF K 16V X7R C818 065G0603221 31 CER1 0603 NP0 50V 220P P C810 065G0603223 32 CHIP 0 022UF 50V X7R 0603 C813 065G0603333 32 CHIP 0 033UF 50V X7R 0603 C815 065G0603473 3...

Page 52: ... 39S 24 T RLZ 5 6B LLDS ZD902 093G 39S 44 T RLZ18B LLDS CN901 006G 31500 EYELET T901 006G 31502 1 5MM RIVET IC904 056G 158 10 T IC AS431AZTR E1 TO 92 R903 061G152M10452T RST MOFR 100KOHM 5 2WS R914 061G152M43852T RST MOF 0R43 5 2W R946 061G152M47152T RST MOFR 470 OHM 5 2WS R828 061G212Y62552T SY RST MGFR 6 2MOHM 5 1 2W FUTABA R828 061G212Y62552T SY RST MGFR 6 2MOHM 5 1 2W FUTABA C906 065G 2K152 1T...

Page 53: ...E J831 095G 90 23 JUMPER WIRE J830 095G 90 23 JUMPER WIRE J826 095G 90 23 JUMPER WIRE J825 095G 90 23 JUMPER WIRE J824 095G 90 23 JUMPER WIRE J801 095G 90 23 JUMPER WIRE 715G2824 2 POWER BOARD PCB FB901 071G 55 29 FERRITE BEAD L906 095G 90 23 JUMPER WIRE J912 095G 90 23 JUMPER WIRE 709G2824 QA001 CONSUMPTIVE ASS Y 095G 90 23 JUMPER WIRE R821 061G0603824 RST CHIPR 820 KOHM 5 1 10W C935 065G1206102 ...

Page 54: ...PC40 ER2828 A280 Q33G0171 1 1C0100 LENS Q40G000262827A POP LABEL FOR A2281WD Q44GC034101 EPS L Q44GC034201 EPS R Q44GC034628 8A 22 LCD CARTON Q45G 77 5 PE PACKING Q45G 88609 74 R EPE BAG FOR MONITOR Q50G 4 10 TIE E08907 S89G179T30N501 LVDS ASS Y 089F80002153BG 1 0 30 2 5 215 3 0 65 0 05 033F303FH10BK3 F1010HA 30P BK 033F303FJSHK30 1 0S 19 30A Q41G220162818A MANUAL Q41G7800628 5A WARRANTY CARD Q45G...

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