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AOC 719Sa+, Service Manual

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AOC 719Sa+ Service Manual Download Page 44

 

44                                                                                                                  

8.2 Trouble Shooting 

1. No 

Power 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 
 

 
 
 
 
 
 

OK 

NG 

No power

 

Check power cable is 

tightened? 

Check Power “On/Off” 

is “On”? 

Re-plug the power cable 

Replace main board and check connections 

Check the LED 

indicate is OK?

Check the AC power   

Replace the power board and check connections 

OK 

NG 

OK 

NG 

NG

Turn on the Power “On/Off” switch 

Replace key board and check connections 

NG

Summary of Contents for 719Sa+

Page 1: ...peration Instruction 6 3 1 General Instructions 6 3 2 Control Button 6 3 3 OSD Menu 7 4 Input Output Specification 11 4 1 Input Signal Connector 11 4 2 Power Supply Requirements 12 4 3 Factory Preset...

Page 2: ...l Name A00 Mar 01 2010 Initial release T79ARDDBK1K3AN T79CRDDBK1K2AN T79SRDDBK1K2AN A01 Apr 28 2010 Add new model T79ARDDBK1K3AC A02 Nov 25 2010 Add new model T79SRDDBK1K2AN A03 Mar 31 2011 Add new mo...

Page 3: ...ay 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 o...

Page 4: ...DC2B CI Input Connector D Sub 15pin Input Video Signal Analog 0 7Vp p standard 75 OHM Power Source 100 240VAC 50 60Hz Power Consumption Active 37 W T79ARDDBK1K3AN T79SRDDBK1K2AN Active 23 W T79CRDDBK1...

Page 5: ...nd 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 HOST Computer AC IN 100V 240V Power board Incl...

Page 6: ...re located at front panel of the monitor 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 mo...

Page 7: ...n repeat steps 2 3 OSD Lock Function To lock the OSD press and hold the Menu button while the monitor is off and then press power button to turn the monitor on To un lock the OSD press and hold the Me...

Page 8: ...nternet Mode Game Game Mode Movie Movie Mode Sports Sports Mode Gamma Gamma1 Adjust to Gamma1 Gamma2 Adjust to Gamma 2 Gamma3 Adjust to Gamma 3 DCR Off Disable dynamic contrast ratio On Enable dynamic...

Page 9: ...Disable or Enable Full Enhance Mode Nature Skin on or off Disable or Enable Nature Skin Mode Green Field on or off Disable or Enable Green Field Mode Sky blue on or off Disable or Enable Sky blue Mod...

Page 10: ...o Detect input signal Analog Select Analog Sigal Source as Input Digital Select Digital Sigal Source as Input Auto Config yes or no Auto adjust the picture to default Image Ratio wide or 4 3 Select wi...

Page 11: ...Signal Connector Analog connectors Pin Number 15 Pin Side of the Signal Cable 1 Video Red 2 Video Green 3 Video Blue 4 N C 5 Detect Cable 6 GND R 7 GND G 8 GND B 9 5V 10 Ground 11 N C 12 DDC Serial da...

Page 12: ...n or defect with a maximum of 1 half wave missing per second 4 3 Factory Preset Display Modes Stand Resolution Horizontal Frequency kHz Vertical Frequency Hz Dos mode 720 x 400 31 469 70 VGA 640 x 480...

Page 13: ...composed of LCD panel driver ICs control circuit and backlight By applying 8 bit digital data 6 bit Hi FRC 1280 1024 16 7M color images are displayed on the 17 0 diagonal screen Input power voltage i...

Page 14: ...14 T79CRDDBK1K2AN T79SRDDBK1K2AN...

Page 15: ...15 4 4 3 Electrical Characteristics T79ARDDBK1K3AN Backlight T79CRDDBK1K2AN 1 TFT LCD Ta 25...

Page 16: ...16 2 Backlight T79SRDDBK1K2AN 1 TFT LCD Module Ta 25 C...

Page 17: ...17 2 Back Light Unit Ta 25 2 C 4 4 4 Optical Characteristics T79ARDDBK1K3AN The optical characteristics are measured under stable conditions at 25 Room Temperature...

Page 18: ...18 T79CRDDBK1K2AN Ta 25 VCC 5 0V...

Page 19: ...19 T79SRDDBK1K2AN Ta 25 2 C VDD 5V fv 60Hz fDCLK 54MHz IL 6 5mArms...

Page 20: ...Board Scalar IC RTD2025L Include ADC OSD U501 H sync V sync RGB EPR_SDA EPR_SCL LCD Interface CN601 Crystal 24MHz X401 MCU RTD2120L LF U401 DDC1_SCL DDC1_SDA D Sub Connector CN301 EEPROM AF24BC16 U403...

Page 21: ...edback Circuit Output Circuit Transformer MOSFET Over Voltage Lamp ON OFF 5V Bridge Rectifier and Filter Feedback Circuit Rectifier diodes DIM DIM EMI filter Start Circuit R904 R905 PWM Control IC Tra...

Page 22: ...KEY1 VCC3 KEY0 C205 0 1uF 16V CMVCC G2507 2 K X 13 091026 DIM 4 CMVCC Q202 PMBS3904 TPV Top Victory Electronics Co Ltd LED_G 4 R202 4K7 1 16W PANEL_ID 4 C210 0 1uF 16V R207 120R 1 16W C201 0 1uF 16V C...

Page 23: ...AT0 DAT0 0 5shield DAT5 DAT5 clk shield clk clk B GND GND C304 0 047uF CMVCC C309 0 047uF RXCP R321 NC 10R 1 16W VGA_B RTD_B RXCN HOT_PLUG R311 100R 1 16W R320 NC 10R 1 16W ZD305 UDZS5 6B 1 2 RTD_B 5...

Page 24: ...5 6 7 8 17 15 41 40 39 38 37 36 35 34 33 19 28 29 20 21 22 23 24 25 26 27 16 9 10 11 12 13 14 18 30 31 32 43 42 44 45 46 47 48 P5 5 PWM5 DSCL2 P5 6 DSDA2 P5 7 RST ASCL1 P3 0 RXD NC NC ASDA1 P3 1 TXD V...

Page 25: ...503 1K 1 16W RXO1 RXE1 RX2P 3 RTD_H 3 RTD_V 3 LVDS_O0 C507 0 1uF 16V LVDS_O9 RTD_G LVDS_E2 LVDS_O4 TMDS_VDD RXE3 RTD_R 3 LVDS_O3 TPV Top Victory Electronics Co Ltd LVDS_E 0 9 6 RTD_SCLK TMDS_VDD RXO3...

Page 26: ...4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 1 LVDS_O8 TPV Top Victory Electronics Co Ltd RXE1 PANEL_VCC R602 330R 1 8W 5 PANEL_VCC PANEL_VCC R606 NC LVDS_O7 LVDS_E1 RXO3...

Page 27: ...USE C910 0 047uF R925 1K 1 8W 1 2 3 4 5 6 7 8 9 10 11 12 13 CN902 CONN R940 NC Q903 PMBS3904 R942 1K 1 10W 1 D903 LL4148 3 5A USB AUDIO 1 5A main PCB 2A INVERTER 5V1 1 2 HS2 EMI shield NC H85G0002 1 C...

Page 28: ...16V Q810 PMBS3904 C816 1500PF 50V Q811 PMBS3904 R835 1K 1 8W R830 0R05 1 8W 3 1 2 D802 BAV99 Q807 PMBS3904 R819 10K 1 10W 1 S 1 G 2 S 3 G 4 D 8 D 7 D 6 D 5 Q804 AM9945N T1 PF 1 2 ZD801 NC RLZ6 8C C80...

Page 29: ...L 01 COVER G2824 2 X X 26 090804 OEM MODEL Size Rev Date Sheet of TPV MODEL PCB NAME T P V Top Victory Electronics Co Ltd Key Component ROUT CN601 PHONEJACK 1 2 3 4 5 MUTE IC601 APA2069JITUL 1 2 3 4 5...

Page 30: ...4W 5 L904 3 5uH C905A 100uF 450V C918 680UF25V R961 100 OHM 1 4W HS2 HEAT SINK D908 1 2 C934 NC 1000uF 25V D908 SP1060 1 2 3 C906 1500PF2KV C924 0 1uF R950 100 OHM 1 4W NC C912 0 001uF Q901 STP10NK70...

Page 31: ...1 8W 5 C808 33NF50V R830 6K8 1 8W 5 22N 50V R832 470R 1 8W 5 R812 100K 1 10W 1 C802 0 047F 50V R818 4R7 1 8W 5 R801 10K 1 10W 5 5V Q805 AO4620 1 2 3 4 5 6 7 8 S2 G2 S1 G1 D1 D1 D2 D2 C811 0 1uF C817 2...

Page 32: ...15 OEM MODEL Size Rev Date Sheet of TPV MODEL PCB NAME T P V Top Victory Electronics Co Ltd Key Component Rin LOUT 5V1 Lin 5V1 R603 10K 1 10W 5 LOUT FB602 BEAD 1 2 R613 1K 1 10W 5 5V1 R612 10R 1 10W 5...

Page 33: ...003 NC UDZS5 6B MENU LBADC1 DC_POWERON UP 0V DOWN SW004 SW 2 1 3 4 5 C008 NC 0 1uF SGND LED_GRN 0 6284 0 7217V 1 0459 1 1938V SGND R003 0R05 1 10W 1 ZD002 NC UDZS5 6B 1K LED SW002 SW 2 1 3 4 5 ZD004 N...

Page 34: ...34 7 PCB Layout 7 1 Main Board 715G2507 2 K...

Page 35: ...35...

Page 36: ...36 7 2 Power Board T79ARDDBK1K3AN T79SRDDBK1K2AN 715G2824 2 2...

Page 37: ...37...

Page 38: ...38...

Page 39: ...39 T79CRDDBK1K2AN 715G2824P0100A001S...

Page 40: ...40...

Page 41: ...41...

Page 42: ...42 7 3 Key Board 715G2835 2...

Page 43: ...ntainability 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 Use...

Page 44: ...ned Check Power On Off is On Re plug the power cable Replace main board and check connections Check the LED indicate is OK Check the AC power Replace the power board and check connections OK NG OK NG...

Page 45: ...ton is OK Check the LVDS FFC cable or panel The end NG OK OK NG Replace the main board Replace the power board and connection Replace the LVDS FFC cable or panel NG The end Replace the key board NG OK...

Page 46: ...y mode Set to the optimal frequency select the recommended frequency Pull out signal cable and check Self Test Feature Check is ok Check the signal cable and the PC Readjust the phase and pixel clock...

Page 47: ...shift Replace the signal cable Pull out the signal cable and check the screen color display is normal The end Replace the signal cable or PC Reset the factory mode In the user mode set the color sett...

Page 48: ...color Normal color temp parameter is x 302 20 y 318 20 Y 150cd m2 C MEM CHANNEL 9 Cool color Cool color temp parameter is x 283 30 y 297 30 Y 130cd m2 D MEM CHANNEL 10 sRGB color sRGB color temp param...

Page 49: ...3 30 y 297 30 Y 130cd m2 4 Adjust the RED on factory window until chroma 7120 indicator reached the value R 100 5 Adjust the GREEN on factory window until chroma 7120 indicator reached the value G 100...

Page 50: ...50 10 Monitor Exploded View...

Page 51: ...AINFRAME 5 REAR COVER 17 No Part No Description 6 HINGE S1 0M1G1730 6120 SCREW 42 D020523 FOR MB PB MAINFRAME 7 STAND TOP S2 0M1G 130 5120 SCREW FOR MAINFRAME PANEL 8 STAND S3 AM1G1740 12 47 CR3 SCREW...

Page 52: ...DB D SUB CABLE E08902 089G 725HAA DB D SUB CABLE 2nd Source 089G179J30N577 FFC CABLE E08901 089G404A15N CX POWER CORD 2nd Source E08901 089G404A15N IS POWER CORD 2nd Source E08901 089G404A15N YH POWER...

Page 53: ...C CRYSTAL 24MHZ 30PF 49U S 709G2507 QM001 CONSUMPTIVE ASS Y 055G 2 ALCOHOL 055G 23524 WELDING FLUX WITHOUT PB Q55G 100625 TIN STICK_LOW ARGENTUM U402 056G 158501 IC AS431AN E1 SOT23 U501 056G 562701 S...

Page 54: ...T CHIPR 100 OHM 5 1 16W R312 061G0402101 RST CHIPR 100 OHM 5 1 16W R503 061G0402102 RST CHIPR 1 KOHM 5 1 16W R453 061G0402102 RST CHIPR 1 KOHM 5 1 16W R424 061G0402102 RST CHIPR 1 KOHM 5 1 16W R402 06...

Page 55: ...50V NPO 5 C602 065G040210332K A CAP 0402 10NF 50V X7R C201 065G040210412K A CAP CHIP 0402 100NF K 16V X7R C204 065G040210412K A CAP CHIP 0402 100NF K 16V X7R C205 065G040210412K A CAP CHIP 0402 100NF...

Page 56: ...D402 093G 64 42 PP BAV70 SOT 23 D403 093G 6432P LL4148 D303 093G 6433L DIODE LBAV99LT1G SOT 23 LRC D302 093G 6433L DIODE LBAV99LT1G SOT 23 LRC D301 093G 6433L DIODE LBAV99LT1G SOT 23 LRC D301 093G 64...

Page 57: ...7G603S AI HJ TACT SWITCH AI 2PIN SEALED SW005 077G603S AI HJ TACT SWITCH AI 2PIN SEALED 709G2835 QA001 CONSUMPTIVE ASS Y 715G2835 2 KEY PCB FR 1 S S 116X17MM PWPC9742MQN2 POWER BOARD G2824 2 2 X 49 09...

Page 58: ...CN901 087G 501 32 S AC SOCKET CN601 088G 30214K DC PHONE JACK 5PIN BD901A 093G 50460 28 BRIDGE DIODE KBP208G LITEON D907 093G 60519 DIODE SR560 5A 60V DO 27 SECOS D907 093G3006 1 1 31DQ06FC3 NIHON IN...

Page 59: ...763525 APM9948K Q804 057G 763525 APM9948K R942 061G0603100 1F RST CHIPR 1 KOHM 1 1 10W R926 061G0603100 1F RST CHIPR 1 KOHM 1 1 10W R849 061G0603100 1F RST CHIPR 1 KOHM 1 1 10W R848 061G0603100 1F RST...

Page 60: ...0603680 RST CHIPR 68 OHM 5 1 10W R816 061G0603680 2F RST CHIPR 68K OHM 1 1 10W R829 061G0603680 2F RST CHIPR 68K OHM 1 1 10W R814 061G0603750 2F RST CHIPR 75KOHM 1 1 10W R830 061G0805000 JF RST CHIPR...

Page 61: ...1FY RST CHIPR 1 5KOHM 1 1 8W YAGEO R841 061G08051501FY RST CHIPR 1 5KOHM 1 1 8W YAGEO R826 061G0805220 3F RST CHIPR 220KOHM 1 1 8W R943 061G0805471 RST CHIPR 470 OHM 5 1 8W R825 061G0805510 2F RST CHI...

Page 62: ...X7R 16V 100N P C807 065G0603104 12 CER2 0603 X7R 16V 100N P C810 065G0603104 22 CAP CHIP 0603 0 1UF K 25V X7R C820 065G060310512K T CAP CHIP 0603 1UF K 16V X7R C819 065G060310512K T CAP CHIP 0603 1UF...

Page 63: ...NF K 50V X7R C935 065G120610272K Y CAP CHIP 1206 1NF K 500V X7R C929 065G120610272K Y CAP CHIP 1206 1NF K 500V X7R C912 065G120610272K Y CAP CHIP 1206 1NF K 500V X7R D801 093G 64 33 DIO SIG SM BAV99 P...

Page 64: ...J810 095G 90 23 JUMPER WIRE J809 095G 90 23 JUMPER WIRE J807 095G 90 23 JUMPER WIRE J806 095G 90 23 JUMPER WIRE J804 095G 90 23 JUMPER WIRE J803 095G 90 23 JUMPER WIRE J802 095G 90 23 JUMPER WIRE J801...

Page 65: ...1L0100 KEY PAD Q33G0171 1 1C0100 LENS Q34G0272ABJA6B0100 REAR COVER 17 Q34G0303BBLA1B0130 BEZEL L17A 8Q1A Q40G0003624 9A PO LABEL Q41G78SV615 2A 719SA QSG Q44G7093101 EPS Q44G7093201 EPS Q44G7093615...

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