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19

 LCD TV

                                                                                                                       

AOC L19AS73 

21 

4. Repair Flow Chart   

4.1 No Power (No LED indicator)

       

 

 

 

 

 

 

 

 

 

 

 
4.2 Can not start (LED indicator yellow)

 

NG

Repair the key board 

OK

Check U701

U702 

NG

Replace U701,U702 

OK 

Check U400 

Replace U400

 

NG

Check I

2

C communication 

Check key board 

NG 

Check power cord and board interface 

Plug in power cord and interface 

OK 

Check adapter 12V output 

NG 

Replace the adapter 

OK 

Check adapter interface 

NG 

Re-plug it 

Summary of Contents for L19AS73

Page 1: ...Board 32 7 Block Diagram 33 8 Schematic Diagram 34 8 1 Main Board 34 8 2 Power Board 42 8 3 Key Board 44 8 4 IR Board 45 9 Exploded View 46 10 BOM List 47 11 Different Parts List 61 Table Of Contents 1 Important Safety Notice 2 1 Monitor Specification 4 2 Operating Instructions 6 2 1 The Use Of Remote Control 6 2 2 OSD Operations 8 2 3 Control Knobs and Connection 13 3 Mechanical Instructions 15 4...

Page 2: ...eristics might 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 radiations when open AVOID DIRECT EXPOSURE TO BEAM CAUTION...

Page 3: ...19 LCD TV AOC L19AS73 3 Revision List Version Release Date Revision Instructions TPV Model A00 Apr 10 2008 Initial Release E197V1NMNWSDNN A01 May 25 2008 Add new BOM E19731NMNWSXNN ...

Page 4: ...19 LCD TV AOC L19AS73 4 1 Monitor Specification ...

Page 5: ...19 LCD TV AOC L19AS73 5 ...

Page 6: ...19 LCD TV AOC L19AS73 6 2 Operations Instructions 2 1 The Use Of Remote Control ...

Page 7: ...19 LCD TV AOC L19AS73 7 ...

Page 8: ...19 LCD TV AOC L19AS73 8 2 2 OSD Operations ...

Page 9: ...19 LCD TV AOC L19AS73 9 ...

Page 10: ...19 LCD TV AOC L19AS73 10 ...

Page 11: ...19 LCD TV AOC L19AS73 11 ...

Page 12: ...19 LCD TV AOC L19AS73 12 ...

Page 13: ...19 LCD TV AOC L19AS73 13 2 3 Control Knobs and Connection 2 3 1 Front panel control knobs ...

Page 14: ...19 LCD TV AOC L19AS73 14 2 3 2 Back panel connection ...

Page 15: ...3 15 3 Mechanical Instructions Step Figure Description Preparation Lay the LCD TV on a flat soft and clean surface Remove the stand and base Remove the hinge cover and the 4 screws Remove the back cover Remove the 6 screws ...

Page 16: ...19 LCD TV AOC L19AS73 16 Remove hinge plate Remove the 7 screws Remove support bkt Remove the 10 screws Remove shield Remove the 7 screws ...

Page 17: ...19 LCD TV AOC L19AS73 17 Remove speaker Remove the 8 screws Remove IR board Remove the 2 screws and connect wire Remove key board Remove the 2 screws Remove pin Remove the 7 connect wire ...

Page 18: ...19 LCD TV AOC L19AS73 18 Remove connect wire Remove the 3 connect wire Remove main and power boards Remove the 11 screws Remove bezel Remove the 4 screws ...

Page 19: ...19 LCD TV AOC L19AS73 19 Remove panel Remove the 4 screws ...

Page 20: ...19 LCD TV AOC L19AS73 20 Remove main frame Panel The end ...

Page 21: ... yellow NG Repair the key board OK Check U701 U702 NG Replace U701 U702 OK Check U400 Replace U400 NG Check I2 C communication Check key board NG Check power cord and board interface Plug in power cord and interface OK Check adapter 12V output NG Replace the adapter OK Check adapter interface NG Re plug it ...

Page 22: ...G Check LVDS cable NG Reset LVDS cable OK Check 12V and 5V power supply NG Return to 5 1 OK Check main board power supply OK Check U811 NG Replace U811 OK Check I2 C communication OK Check panel NG Replace panel Check Q821 Q841 Replace Q821 Q841 Check PT801 PT802 Replace PT801 PT802 NG NG OK OK ...

Page 23: ... Check the source Reset source NG Replace the filter or resistance RF signal Check Tuner Replace Tuner Check LVDS cable Replace LVDS cable Check panel Replace panel OK NG OK NG OK OK OK NG OK OK NG OK AV S video Component HDMI PC Signal OK Check signal filter circuit Check input ...

Page 24: ...filter circuit SIF signal Check TV system setup Check Tuner U101 Replace Tuner U101 AV S video HDMI PC signal Replace U400 Check Earphone jack Replace the Earphone jack Check U600 Replace U600 NG OK NG OK OK NG Check U400 NG OK Check signal filter circuit Check Speaker NG Replace Speaker OK ...

Page 25: ...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 Is Key Pad Board Normally Replace Key Pad Board Check Main Board NG NG OK OK NG ...

Page 26: ...19 LCD TV AOC L19AS73 26 5 White Balance Luminance Adjustment It is no need to do white balance for this model ...

Page 27: ...19 LCD TV AOC L19AS73 27 6 PCB Layout 6 1 Main Board 715T2509 2 ...

Page 28: ...19 LCD TV AOC L19AS73 28 ...

Page 29: ...19 LCD TV AOC L19AS73 29 6 2 Power Board 715T2476 1 ...

Page 30: ...19 LCD TV AOC L19AS73 30 ...

Page 31: ...19 LCD TV AOC L19AS73 31 ...

Page 32: ...19 LCD TV AOC L19AS73 32 6 3 Key Board 715T2501 1 6 4 IR Board 715T2499 1 ...

Page 33: ...19 LCD TV AOC L19AS73 33 7 Block Diagram ...

Page 34: ... 2 2uF 12V_PWR VCC Panel Q708 PMBS3904 1 3 2 C724 0 1uF R701 10K 1 10W 12V 4A 5Vstb R711 39Ω 3W CN700 CONN 1 2 3 4 5 6 7 8 9 10 11 C768 0 1UF16V Q700 AO4411 1 2 3 4 8 7 6 5 S S S G D D D D 01 01 Sy stem Power A3 1 8 Wednesday June 06 2007 Title Size Document Number Rev Date Sheet of 5Vstb R705 4 7K 1 10W 3 3V R707 1K 1 10W R710 4 7KΩ 1 10W R754 4 7K 1 10W 5VA POWER ON OFF R703 4 7K 1 10W C703 0 1u...

Page 35: ...C726 2 2uF C714 0 1uF D700 B340A 1 2 FB707 300 OHM 1 2 C757 0 1uF AVDD_AU C721 0 1uF 3 3AVDD for AVDDA 3 3VA 3 3VA R715 100KΩ 1 10W VDDC AVDD_MemPLL FB710 300 OHM 1 2 C744 0 1uF C753 0 1uF C730 0 1uF Vcc3 3 for MST9E19A C717 0 1uF T2509 2 X X 4 070606 VDD_MPLL 3 3V for VDD_MPLL VDDP C734 0 1uF C727 0 1uF C731 47UF 16V Vcc1 8 for MST9E19A 3 3AVDD for AVDD_HDMI FB713 300 OHM 1 2 C754 0 1uF VDDC 3 3V...

Page 36: ...5 LB1P R4 LB2M R3 LB2P R2 LBCKM R1 LBCKP R0 LB3M G7 LB3P G6 LB4M G5 LB4P G4 LA0M G3 LA0P G2 LA1M G1 LA1P G0 LA2M B7 LA2P B6 LACKM B5 LACKP B4 LA3M B3 LA3P B2 LA4M B1 LA4P B0 DI7 DI6 DI5 DI4 DI3 DI2 DI1 DI0 ICLK IVSYNC IHSYNC XIN XOUT HWRESET AVDD_ADC AVDD_SIF AVDD_AU AVDD_MEMPLL AVDD_DVI AVDD_DVI AVDD_MPLL AVDD_MPLL VDDC VDDC VDDC VDDC VDDC VDDC VDDP VDDP VDDP VDDP VDDP VDDP VDDP VDDP VDDP VDDP AD...

Page 37: ... 1 2 R181 100Ω 1 10W PC R VGA R R175 75Ω 1 10W GIN C172 NC R174 330Ω 1 10W ZD119 UDZS5 6B 1 2 C168 0 047uF R191 10KΩ 1 10W 5Vstb SOG ZD121 VPORT0603100KV05 1 2 VGA HS R187 4 7KΩ 1 10W R171 10Ω 1 10W P100 DB15 6 1 7 2 8 3 9 4 10 11 12 13 14 15 5 17 16 R170 100Ω 1 10W R177 75Ω 1 10W GIN HS_RGB VGA SCL T2509 2 X X 4 070606 5Vstb D108 BAT54C 3 1 2 PC L R190 NC RIN C169 0 047uF RIN C167 1000pF C164 0 0...

Page 38: ...01 05 HDMI A4 5 8 Wednesday June 06 2007 Title Size Document Number Rev Date Sheet of HDMI_SDA C503 0 1UF16V G_TX1 R512 100Ω 1 10W 5Vstb HDMI 5V Q500 PMBS3904 1 3 2 B_TX0 R511 NC D504 BAV99 3 1 2 D503 BAV99 3 1 2 ZD501 UDZS5 6B 1 2 R501 10Ω 1 10W C500 2 2uF 16V U500 M24C02 WMN6TP 1 2 3 4 5 6 7 8 A0 A1 A2 VSS SDA SCL WP VCC HDMI 5V R_TX2 C506 0 1UF16V T2509 2 X X 4 070606 C507 0 1UF16V CN500 HDMI 2...

Page 39: ...047uF ZD107 VPORT0603100KV05 1 2 HD Audio R Input R139 10KΩ 1 10W C160 560pF R146 75Ω 1 10W ZD106 VPORT0603100KV05 1 2 PB ZD105 VPORT0603100KV05 1 2 HD Rin SVIDEO Cin C148 680pF S Video HD Audio L Input HD Lin R147 10Ω 1 10W R165 10KΩ 1 10W C151 0 047uF R166 12KΩ 1 10W R154 47Ω 1 10W SVIDEO Cin R148 75Ω 1 10W R155 75Ω 1 10W PY PR AV Vin ZD103 VPORT0603100KV05 1 2 AV SVIDEO Lin PB_IN C158 0 047uF A...

Page 40: ...132 2 2KΩ 1 10W C118 22pF C125 NC 330pF FB103 300 OHM 1 2 FB102 300 OHM 1 2 TV SIF CVBS Output Vp p 1V C126 NC 330pF SCL_EXT CABLE IN U101 TUNER TCLMO9WPP 2PN E 4 5 6 11 12 3 14 15 16 17 18 1 2 10 9 13 SCL SDA Adress Seletion 2nd SIF CVBS 5V AF MPX TH4 TH3 TH2 TH1 N C N C N C N C 5V IF 5VA R123 10Ω 1 10W C115 0 1uF R129 47Ω 1 10W C114 10uF 16V TV MONO TV_SIF R757 NC 10KΩ 1 10W TV1 Vin C116 NC 4 7P...

Page 41: ...ST_BY S_GND PW_GND PW_GND PW_GND PW_GND OUT1 OUT1 OUT2 OUT2 VCC VCC MUTE 12V_PWR AGND R620 100Ω 1 10W AMP R C606 0 01uF R751 0Ω 1 10W AMP MUTE C614 2 2uF AMP L Q709 PMBS3904 1 3 2 CN601 R_SPEAKER 1 2 U601A TL062CD 3 2 1 8 4 Q601 PMBS3904 1 3 2 FB600 300 OHM 1 2 R617 10KΩ 1 10W R752 10KΩ 1 10W C616 100pF C791 100uF 16V Audio Pre Amplifier C600 10uF 16V R608 47KΩ 1 10W AGND C625 100uF 16V R623 NC R6...

Page 42: ... SWITCH DIM R937 100Ω 1 4W D909 SB1060FCT 1 2 3 D908 SP10150R 1 2 3 R911 1KΩ 1 4W ON OFF R934 100Ω 1 4W R916 100Ω 1 4W TO PIN3 R902 680KΩ 1 4W R906 100Ω 1 4W C931 0 001uF C906 22uF C902 0 001uF 250V DIM C911 470uF 25V T901 POWER X FMR 6 8 5 4 2 1 11 10 12 9 7 C937 470uF 25V L902 CHOKE CM14 1 4 2 3 R910 22Ω 1 4W R936 100Ω 1 4W 5V R920 1KΩ 1 8W 1 1 1 Tuesday March 20 2007 Title Size Document Number ...

Page 43: ...AM9945N T1 PF 1 2 3 4 8 7 6 5 S G S G D D D D R823 82KΩ 1 8W R810 1MΩ 1 8W C812 0 001uF D805 BAV99 3 1 2 Q805 AM9945N T1 PF 1 2 3 4 8 7 6 5 S G S G D D D D R841 430Ω 1 1 8W R819 15Ω 1 4W C848 0 001uF R837 5 1Ω 1 4W C810 560PF R826 360 1 8W R813 1MΩ 1 8W R806 10KΩ 1 8W C813 0 001uF C847 0 001uF 1 1 1 Tuesday March 20 2007 Title Size Document Number Rev Date Sheet of VCC C822 0 001uF CN802 CONN 1 2 ...

Page 44: ...19 LCD TV AOC L19AS73 44 8 3 Key Board 715T2501 1 ...

Page 45: ...19 LCD TV AOC L19AS73 45 8 4 IR Board 715T2499 1 ...

Page 46: ...19 LCD TV AOC L19AS73 46 9 Exploded View ...

Page 47: ... 098TRABD6NTACF REMOTE CONTROL FOR CITA 0M1T 330 4120 SCREW 42A9930008 0M1T 330 4120 SCREW 42A9930008 0M1T 330 4120 SCREW 42A9930008 0M1T 330 4120 SCREW 42A9930008 0M1T 330 4120 SCREW 42A9930008 0M1T 330 6120 SCREW 42A9930014 0M1T 960 10120 SCREW 0M1T1140 6120 SCREW 4 6MM 0M1T1730 6120 SCREW 3 6MM 0M1T1730 6120 SCREW 3 6MM 0M1T1730 6120 SCREW 3 6MM 0Q1T 330 6120 SCREW 42A9930001 0Q1T 330 8120 SCRE...

Page 48: ...53137 ER CHOKE COIL BY EROCORE SCB 03 CN703 088G 30211K PHONE JACK 5PIN CN105 088T 78 10 2C RCA JACK CN104 088T 78 13 5C RCA JACK CN102 088T 100 6 C 4PIN MINI DIN JACK P101 088T 30214K PHONE JACK CN704 088T 35315F H DB15 RIGHT ANGLE FEMALE X400 093T 22 53 CRYSTAL 14 318MHZHC 49US U101 094TNPALALL 2L TUNER TCL M09WPP 2PNK E C114 067T 305100 3T 10UF 16V C406 067T 305100 3T 10UF 16V C433 067T 305100 ...

Page 49: ...057T 417 4 CHIP PMBS3904 BY PHILIPS Q713 057T 417 4 CHIP PMBS3904 BY PHILIPS Q400 057T 417 6 PMBS3906 PHILIPS SMT Q710 057T 417 6 PMBS3906 PHILIPS SMT Q711 057T 417 6 PMBS3906 PHILIPS SMT Q704 057T 763 3 AO4411L SO 8 BY AOS SMT Q700 057T 763 3 AO4411L SO 8 BY AOS SMT RP401 061T 125330 8 RST CHIP AR 8P4R 33 OHM 5 1 16W RP402 061T 125330 8 RST CHIP AR 8P4R 33 OHM 5 1 16W RP403 061T 125330 8 RST CHIP...

Page 50: ... 061T0603101 RST CHIPR 100 OHM 5 1 10W R415 061T0603101 RST CHIPR 100 OHM 5 1 10W R414 061T0603101 RST CHIPR 100 OHM 5 1 10W R407 061T0603101 RST CHIPR 100 OHM 5 1 10W R406 061T0603101 RST CHIPR 100 OHM 5 1 10W R401 061T0603101 RST CHIPR 100 OHM 5 1 10W R181 061T0603101 RST CHIPR 100 OHM 5 1 10W R170 061T0603101 RST CHIPR 100 OHM 5 1 10W R133 061T0603101 RST CHIPR 100 OHM 5 1 10W R130 061T0603101 ...

Page 51: ...07 061T0603103 RST CHIPR 10KOHM 5 1 10W R605 061T0603103 RST CHIPR 10KOHM 5 1 10W R601 061T0603103 RST CHIPR 10KOHM 5 1 10W R602 061T0603104 RST CHIPR 100KOHM 5 1 10W R715 061T0603104 RST CHIPR 100KOHM 5 1 10W R413 061T0603105 RST CHIPR 1MOHM 5 1 10W R718 061T0603113 2F RST CHIPR 11 3 KOHM 1 1 10W R195 061T0603123 RST CHIPR 12 KOHM 5 1 10W R192 061T0603123 RST CHIPR 12 KOHM 5 1 10W R166 061T060312...

Page 52: ...6W R704 061T0603472 CHIP 4 7KOHM 1 16W R600 061T0603473 CHIP 47KOHM 1 16W R608 061T0603473 CHIP 47KOHM 1 16W R744 061T0603473 CHIP 47KOHM 1 16W R716 061T0603682 RST CHIPR 6 8KOHM 5 1 10W R128 061T0603750 RST CHIPR 75 OHM 5 1 10W R144 061T0603750 RST CHIPR 75 OHM 5 1 10W R146 061T0603750 RST CHIPR 75 OHM 5 1 10W R148 061T0603750 RST CHIPR 75 OHM 5 1 10W R155 061T0603750 RST CHIPR 75 OHM 5 1 10W R15...

Page 53: ...0210427T CAP 0402 0 1UF Z 25V Y5V TAIYO YUDEN C704 065T040210427T CAP 0402 0 1UF Z 25V Y5V TAIYO YUDEN C703 065T040210427T CAP 0402 0 1UF Z 25V Y5V TAIYO YUDEN C702 065T040210427T CAP 0402 0 1UF Z 25V Y5V TAIYO YUDEN C610 065T040210427T CAP 0402 0 1UF Z 25V Y5V TAIYO YUDEN C601 065T040210427T CAP 0402 0 1UF Z 25V Y5V TAIYO YUDEN C439 065T040210427T CAP 0402 0 1UF Z 25V Y5V TAIYO YUDEN C436 065T040...

Page 54: ...5 A5 MLCC 0402 1UF K 10V X5R C118 065T0402220 31 CHIP 22PF 50V NPO C117 065T0402220 31 CHIP 22PF 50V NPO C408 065T0402330 31 33PF 50 50V NPO C404 065T0402330 31 33PF 50 50V NPO C760 065T0402332 32 CHIP 3300PF 50V X7R C158 065T0402473 12 MLCC 0402 47NF K 16V X7R C159 065T0402473 12 MLCC 0402 47NF K 16V X7R C164 065T0402473 12 MLCC 0402 47NF K 16V X7R C165 065T0402473 12 MLCC 0402 47NF K 16V X7R C16...

Page 55: ... 17 CHIP 1UF 16V Y5V C600 065T0805106 15 CHIP 10UF 16V X5R 0805 C765 065T0805225 17 CHIP 2 2UF 16V Y5V C500 065T0805225 17 CHIP 2 2UF 16V Y5V C444 065T0805225 17 CHIP 2 2UF 16V Y5V C440 065T0805225 17 CHIP 2 2UF 16V Y5V U403 070GHDCP500HDC HDCP CODE FB102 071T 57G301 EA CHIP BEAD FB103 071T 57G301 EA CHIP BEAD FB713 071T 57G301 EA CHIP BEAD FB712 071T 57G301 EA CHIP BEAD FB711 071T 57G301 EA CHIP ...

Page 56: ...OHM ZD500 093T 39S 34 T UDZSNP5 6B ROHM ZD501 093T 39S 34 T UDZSNP5 6B ROHM 715T2509 2 MAIN BOARD PCB Q85T 583162 GASKET_ALUMINIUM FOIL Q90T8009 1 1A HEAT SINK IRPF7Y2 IR BOARD T2499 1 X X 1 080228 CN01 033T3802 5 AUDIO IN D02 056T 627 14 1 IC KSM 2003TN2E 37 9KHZ Q1 057T 417 6 PMBS3906 PHILIPS SMT R01 061T0603101 RST CHIPR 100 OHM 5 1 10W R07 061T0603103 RST CHIPR 10KOHM 5 1 10W R09 061T0603331 R...

Page 57: ... SL 6KV TDK C825 065T 6J5096ET 5PF 5 SL 6KV TDK CC45SL3JD050CYHN C826 065T 6J5096ET 5PF 5 SL 6KV TDK CC45SL3JD050CYHN C915 065T306M1022BM Y1 CAP 001UF 250VAC MURATA C902 065T306M1022BM Y1 CAP 001UF 250VAC MURATA C901 065T306M1022BM Y1 CAP 001UF 250VAC MURATA C938 065T306M1022BM Y1 CAP 001UF 250VAC MURATA C935 067T215P1023PV CAP 105 1000UF M 16V C912 067T215P1023PV CAP 105 1000UF M 16V C936 067T215...

Page 58: ... 1KOHM 5 1 4W R803 061T0805103 RST CHIPR 10 KOHM 5 1 8W R806 061T0805103 RST CHIPR 10 KOHM 5 1 8W R812 061T0805103 RST CHIPR 10 KOHM 5 1 8W R815 061T0805104 RST CHIPR 100 KOHM 5 1 8W R813 061T0805105 RST CHIPR 1 MOHM 5 1 8W R846 061T0805105 RST CHIPR 1 MOHM 5 1 8W R860 061T0805105 RST CHIPR 1 MOHM 5 1 8W R848 061T0805105 RST CHIPR 1 MOHM 5 1 8W R810 061T0805105 RST CHIPR 1 MOHM 5 1 8W R926 061T080...

Page 59: ...1 4W R931 061T1206472 RST CHIPR 4 7 KOHM 5 1 4W R938 061T1206472 RST CHIPR 4 7 KOHM 5 1 4W R837 061T1206519 RST CHIPR 5 1 OHM 5 1 4W R842 061T1206519 RST CHIPR 5 1 OHM 5 1 4W R901 061T1206684 RST CHIPR 680KOHM 5 1 4W R902 061T1206684 RST CHIPR 680KOHM 5 1 4W R903 061T1206684 RST CHIPR 680KOHM 5 1 4W C805 065T0805102 31 1000PF 50V NPO C803 065T0805104 22 0 1UF 10 25V X7R 0805 C919 065T0805104 32 CH...

Page 60: ...N4148W ZD905 093T 39S 20 T RLZ22B LLDS ZD801 093T 39S 24 T RLZ 5 6B LLDS ZD902 093T 39S 24 T RLZ 5 6B LLDS ZD903 093T 39S 38 T PTZ 9 1B ZD901 093T 39S 40 T RLZ 13B LLDS ZD904 093T 39S 44 T RLZ18B CN901 006T 31500 EYELET 2 0 FOR ITEM CN901 AC SOCKET T901 006T 31502 EYELET 1 5 FOR T902 4 L906 2 C907 2 Q903 006T 31502 EYELET 1 5 FOR T902 4 L906 2 C907 2 PT802 006T 31502 EYELET 1 5 FOR T902 4 L906 2 C...

Page 61: ...7 1 BKT FOR AC AND POWER SW Q40T 19261519A RATING LABEL Q40T0001624 4A PALLET LABEL Q40T000262443A I O LABEL Q44T3121510522 SPONGE Q44T9003214 CORNER PAPER Q44T9061 1 EPS Q44T9061 2 EPS Q44T906161512A 19 TV CARTON Q45T 76 28 RN R PE BAG Q45T 88609 22 R EPE COVER Q45T 88609 28 R EPE COVER FOR BASE Q52T 1185 66 AOC TAPE Q52T 1211811 ALUMINUM FOIL TAPE Q52T6025 15193 MYLAR Q85T 583142 FOAM_ELECTRIC Q...

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