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AOC I-INC AG191A, Service Manual

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AOC I-INC AG191A Service Manual Download Page 5

19" LCD Color Monitor

                                                       

         

       I-INC AG191A

 

 

5

2. LCD Monitor Description 

Assembly Description 

The LCD MONITOR will contain a power 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 

AC-IN 

100V-240V 

Power Board 

Flat Panel and 

CCFL Backlight 

PANEL  

（

Include Main Board

）

 

Key board 

RS232 Connector 

For white balance 

adjustment in factory 

mode 

HOST Computer 

CCFL Drive. 

Video signal, DDC 

Summary of Contents for I-INC AG191A

Page 1: ...6 3 Operation Instruction 7 3 1 General Instructions 7 3 2 Control Button 7 3 3 Adjusting the Picture 8 4 Input Output Specification 13 4 1 Input Signal Connector 13 4 2 Factory Preset Display Modes...

Page 2: ...19 LCD Color Monitor I INC AG191A 2 Revision List Revision Date Revision History TPV Model T96HM5DTG6HZAIP T96HM5DTG6ZHAIP T96HM5NTG6HZAIP A00 Jan 10 07 First Version Release T96HM5NTG6ZHAIP...

Page 3: ...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...

Page 4: ...lors Max Resolution 1280 x 1024 75Hz Plug Play VESA DDC2B TM ON Mode 36 7W EPA ENERGY STAR OFF Mode 2W Audio output Rated Power 1 5W rms Per channel Input Connector D Sub 15pin DVI D 24pin Dual Input...

Page 5: ...gic 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 AC IN 100V 240V...

Page 6: ...19 LCD Color Monitor I INC AG191A 6 Dimensions...

Page 7: ...r will light up 3 2 Control Buttons Power Button Press this button to switch ON OFF of monitor s power Power Indicator Green Power On mode Orange Off mode MENU ENTER 1 Activate the OSD menu or adjust...

Page 8: ...window 2 Press or to select the desired function 3 Press the MENU button to select the function that you want to adjust 4 Press or to change the settings of the current function 5 To exit and save se...

Page 9: ...19 LCD Color Monitor I INC AG191A 9...

Page 10: ...19 LCD Color Monitor I INC AG191A 10...

Page 11: ...19 LCD Color Monitor I INC AG191A 11...

Page 12: ...19 LCD Color Monitor I INC AG191A 12...

Page 13: ...19 LCD Color Monitor I INC AG191A 13 4 Input Output Specification 4 1 Input Signal Connector...

Page 14: ...19 LCD Color Monitor I INC AG191A 14 4 2 Factory Preset Display Modes...

Page 15: ...tal display LCD that uses amorphous silicon TFT as a switching device This model is composed of a TFT LCD panel the voltage reference common voltage DC DC converter column and row driver circuit This...

Page 16: ...19 LCD Color Monitor I INC AG191A 16 4 3 2 Optical Characteristics 4 3 3 Parameter guide line for CCFL Inverter TFT LCD Module Back Light Unit...

Page 17: ...19 LCD Color Monitor I INC AG191A 17 5 Block Diagram 5 1 Software Flow Chat 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: ...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 interr...

Page 19: ...19 LCD Color Monitor I INC AG191A 19 5 2 Electric Block Diagram Power Board...

Page 20: ...LVB1M BB3 BB2P LVB0P BB4 BB2N LVB0M BB5 NC LVACKP NC GA3N LVA3M GA7 GA3P LVA3P GA6 GND GND RX2P RX2N RX1P RX1N AVDD_DVI RX0P RX0N RXCKP RXCKN GND GND GND VDDP VDDC MODE 1 MODE 0 VCTRL VDDP VDD_OTP DD...

Page 21: ...4 7K 1 16W 5V PWR_LEDB C303 10uF 16V MUTE 5V C37 0 1uF 16V POWER 0 1 I MODEL HSD 6 7 Thursday April 27 2006 Title Size Document Number Rev Date Sheet of VDD 5 R46 NC KEY1 VOLUME VCC BL_ADJ R39 22 1 1...

Page 22: ...16W R70 1K 1 16W C55 33pF D8 UDZS5 6B 1 2 VGA INPUT 0 1 I MODEL HSD 5 7 Thursday April 27 2006 Title Size Document Number Rev Date Sheet of D14 BAV99 3 1 2 SOGI R_IN DDC_SCL C148 NC R63 1K 1 16W DB_B...

Page 23: ...5 IN3 IN4 IN2 IN1 VDD OUTCOM GND INCOM GND R417 86 6 1 R415 143 1 R439 51 1 1 VGMA12 C504 1uF 16V R401 0 1 16W R403 0 1 16W TP163 TP157 CN5 AF724L N2GIZ 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19...

Page 24: ...22uF 25V R214 110k 1 R211 10K 1 16W C203 0 1uF 16V C218 NC C207 1uF D208 CHPT521S 30 1 2 C204 0 1uF 16V VDDA 12V R210 10K 1 16W C213 10uF 16V U202 S 80924LMC G6U T2G NC 1 2 3 4 5 OUT VDD GND NC CD Q21...

Page 25: ...S1 D21N D21P VSS1 D22N D22P STHL S480 NC COM1 COM1 COM1 TP1 TP1 C540 0 1uF 16V TP41 F_D0 F_D9 F_D11 VGMA4 VCOM F_D0 VGMA1 TP32 INV MODE 3S480 F_D19 MODE F_D4 VGMA7 VGMA5 R500 1K 1 16W F_D14 C552 0 1u...

Page 26: ...B_D13 TP140 TP124 B_D4 B_D9 TP128 B_D18 B_D1 TP144 C557 0 1uF 16V STH5 6 R165 100 1 16W MODE VGMA9 TP68 MODE B_D14 C530 0 1uF 16V C534 0 1uF 16V VGMA4 VDDA2 B_D10 TP70 R171 100 1 16W VGMA12 VGMA3 VGMA...

Page 27: ...304 NC VOLUME adjust Q301 N C R301 NC jump2 95G 90 23 12V VOLUME ADJUST D301 NC CN301 NC 5 1 2 3 4 MUTE C307 NC C302 NC C303 NC C317 N C C311 NC AUDIO STDBY U301 NC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15...

Page 28: ...2 1000pF C813 47pf R831 510K 1 10W R836 510 C817 470pF 50V CN804 CONN 1 2 C804 470pF 50V R809 6 2M 1 2W R822 N C C814 470pF 50V R807 15K 1 10W R814 6 2M 1 2W CN802 CONN 1 2 C818 0 0068uF Q809 N C R803...

Page 29: ...ME ADJUST C913 NC R900 680K 1 4W D905 1N4148W C914 0 001uF 500V C902 0 0047UF 400V C901 0 0047UF 400V C923 0 1uF R921 0 1 8W C912 470uF 16V C900 0 001uF 250V C916 0 1uF 25V 5V MUTE 5V IC903 HTL431 ZD9...

Page 30: ...19 LCD Color Monitor I INC AG191A 30 7 PCB Layout 7 1 Power Board...

Page 31: ...19 LCD Color Monitor I INC AG191A 31...

Page 32: ...19 LCD Color Monitor I INC AG191A 32 7 2 Key board...

Page 33: ...C AG191A 33 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 Ser...

Page 34: ...nput Check the voltage of C907 Check bridge rectified circuit and F901 circuit Check start voltage for the pin8 of IC901 Check R903 Change IC901 NG Check the auxiliary voltage is bigger than 10V and s...

Page 35: ...Check Interface board or 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 Q802 Q803...

Page 36: ...36 8 2 2Key Board OSD is unstable or not working Is Key Pad Board connecting normally Connect Key Pad Board Is Button Switch normally Replace Button Switch Y N N Is Key Pad Board normally Replace Key...

Page 37: ...h 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 28 y 297 28 Y 220cd 4...

Page 38: ...y 348 28 Y 220cd 4 Adjust the RED of color 3 on factory window until chroma 7120 indicator reached the value R 100 5 Adjust the GREEN of color 3 on factory window until chroma 7120 indicator reachedt...

Page 39: ...19 LCD Color Monitor I INC AG191A 39 9 Monitor Exploded View...

Page 40: ...02 2H WAFER 2P RIGHT ANGLE CN003 033G3802 2H WAFER 2P RIGHT ANGLE CN001 033G8027 12 H PIN HEADER 2 6 R A SW003 077G 600 1GCJ TACT SWITCH TSPB 2 NP SW002 077G 600 1GCJ TACT SWITCH TSPB 2 NP SW001 077G...

Page 41: ...M 5 2W C809 065G 3J1006ET 10PF J 3KV SL C805 065G 3J1006ET 10PF J 3KV SL C811 065G 3J5096ET 5PF 5 SL 3KV C801 065G 3J5096ET 5PF 5 SL 3KV C901 065G305M1022BP Y2 1000PF M 250VAC Y5P C900 065G305M1022BP...

Page 42: ...ARD FOR SMT IC901 056G 564911 IC TEA1532AT S08 IC801 056G 608 10 0Z9938 Q801 057G 417 4 PMBS3904 PHILIPS SMT 04 Q806 057G 417 4 PMBS3904 PHILIPS SMT 04 Q811 057G 417 4 PMBS3904 PHILIPS SMT 04 Q804 057...

Page 43: ...05390 1F RST CHIPR 3 9 KOHM 1 1 8W R824 061G0805390 2F RST CHIPR 39 KOHM 1 1 8W R911 061G0805472 RST CHIPR 4 7 KOHM 5 1 8W R916 061G0805510 1F RST CHIPR 5 1 KOHM 1 1 8W R923 061G0805510 1F RST CHIPR 5...

Page 44: ...0805 C311 065G0805105 22 CHIP 1UF 25V X7R 0805 C919 065G0805224 22 CAIP CAP 0 22 UF 25V X7R C815 065G0805225 27 2 2UF C823 065G0805225 27 2 2UF C814 065G0805471 31 CHIP 470PF 50V NPO C804 065G0805471...

Page 45: ...HM 5 1 6W R307 061G 60256252T 5 6KOHM 5 1 6W R306 061G 60256252T 5 6KOHM 5 1 6W R903 061G212Y15352T RST MGFR 15 KOHM 5 1 2W R814 061G212Y625 KT MGFR 6 2MOHM 5 1 2W R809 061G212Y625 KT MGFR 6 2MOHM 5 1...

Page 46: ...NTY LABEL Q41G780085014A RECYCLE INFORMATION Q70G9000850 1A CD MANUAL 705GQ9K0F34045 19 LCD BEZEL ASS Y 0Q1G1030 8120 SCREW A33G0027 1 1C LENS A33G0043 ZU 1L KEY PAD A34G0041 ZTB5B 30 BEZEL Q12G6300 3...

Page 47: ...4G0041 ZTB5L 30 BEZEL 19 705GQ9K0P34053 19 LCD STAND COVER BASE ASS Y A34G0042 ZT 6L 30 REAR COVER 19 A34G0046 ZT 3L STAND A34G0117 ZT 1L 20 BASE Q40G 19N850 3A RATING LABEL Q44G3944850 3A CARTON Q70G...

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