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Optima L903AD+, Service Manual, Page: 5 / 63

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Optima L903AD+ Service Manual Download Page 5

19

″

 LCD Color Monitor

                                                                                         

  Optima  

5 

2. LCD Monitor Description 

The LCD monitor will contain a main board, an audio board, 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 

(Include: adapter, inverter)

Flat Panel and 

CCFL backlight 

RS232 Connector 

For white balance 

adjustment in factory 

mode 

CCFL Drive. 

Video signal, DDC 

Key Board 

HOST Computer 

Audio Board 

Main Board 

Summary of Contents for L903AD+

Page 1: ...3 1 General Instructions 6 3 2 Control Button 6 3 3 Adjusting the Picture 8 4 Input Output Specification 10 4 1 Input Signal Connector 10 4 2 Power Supply Requirement 11 4 3 Factory Preset Display Mod...

Page 2: ...19 LCD Color Monitor Optima L903AD 2 Revision List Revision Date Revision History TPV Model A00 May 23 07 Initial Release T96AM6HLEAOPA...

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: ...0 7Vp p standard 75 OHM Positive Video Signal Digital signal Separate Sync H V TTL H Frequency 30kHz 83kHz Analog Input V Frequency 56 75Hz Analog ON Mode 37W Power Consumption OFF Mode 1W Dot Clock...

Page 5: ...htness 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 Bo...

Page 6: ...e monitor By changing these settings the picture can be adjusted to your personal preferences The power cord should be connected Connect the video cable from the monitor to the video card Press the po...

Page 7: ...st function Volume Decrease volume or adjust function Auto Adjust button Exit 1 When OSD menu is in active status this button will act as EXIT KEY EXIT OSD menu 2 When OSD menu is in off status press...

Page 8: ...select the exit function If you want to adjust any other function repeat steps 2 3 Main Menu Item Main Menu Icon Sub Menu Item Sub Menu Icon Description Contrast Contrast from Digital register Luminan...

Page 9: ...l source DVI OSD Setup H Position Adjust the horizontal position of the OSD V Position Adjust the vertical position of the OSD OSD Timeout Adjust the OSD timeout Language Language N A Set OSD language...

Page 10: ...Ground VGA connector layout 1 5 6 10 11 15 2 DVI D connector Pin No Description Pin No Description 1 TMDS data 2 13 TMDS data 3 2 TMDS data 2 14 5V Power 3 TMDS data 2 4 Shield 15 Det DVI 4 TMDS data...

Page 11: ...sing per second DC output Voltage 12VDC 5 Current max 3 5 Amp 12V 4 3 Factory Preset Display Modes Standard Resolution Horizontal Frequency Vertical Frequency Dos mode 720 400 31 47kHz 70 0Hz 640 480...

Page 12: ...19 LCD Color Monitor Optima L903AD 12 4 4 Panel Specification 4 4 1 Introduction 4 4 2 Display Characteristics...

Page 13: ...19 LCD Color Monitor Optima L903AD 13 4 4 3 Optical Characteristics...

Page 14: ...19 LCD Color Monitor Optima L903AD 14 4 4 4 Electrical Characteristics 1 TFT LCD Module 2 Backlight Unit...

Page 15: ...19 LCD Color Monitor Optima L903AD 15 5 Block Diagram 5 1 Software Flow Chat 1 2 N Y 5 Y N 1 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 16: ...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 17: ...U403 Flash Memory PM25LV010A U402 Scalar IC TSUM56AK Include MCU ADC OSD U401 EEPROM M24C02 U404 H sync V sync RGB SCL_VGA SDA_VGA LCD Interface CN101 D Sub Connector CN405 Crystal 14 318MHz X401 DVI...

Page 18: ...N902 DIM DIM EMI filter Bridge Rectifier and Filter Start Circuit R906 R907 PWM Control IC Transformer Rectifier diodes AC input ON OFF Control LC Resonant and Output Circuit Lamp ON OFF Feedback Circ...

Page 19: ...C3 3 LVDS OUTPUT 12V PA 14 19 VLCD GPO 0 4 VCC1 8 VLCD_12V B3 3 INPUT RIN GIN BIN VSYNC GNDR GNDG GNDB DET_VGA HSYNC SOG B CLK DET_DVI CLK R G R B G DDCA_SDA DDCA_SCL DDCD_SDA DDCD_SCL 5V DDC_WP 3V3 T...

Page 20: ...OUT VOUT R721 0 1 16W VCC3 3 4 R707 4 7K 1 16W VLCD_12V VCC1 8 R713 NC C702 4 7uF 16V R723 51K 1 16W C717 10uF 16V R714 10K 1 16W GND VCC3 3 4 C713 0 1uF 5V GND R730 0 1 16W 5V R710 NC D C Q703 PMBS39...

Page 21: ...DCLK VSI GNDR 4 D411 MLL5232B 5 6V RED R441 100 1 16W FB409 120 OHM R458 100 1 16W R446 1K 1 16W INPUT A B 1 5 Monday May 09 2005 Title Size Document Number Rev Date Sheet of D409 MLL5232B 5 6V DDCA_S...

Page 22: ...0 OHM Option PA13 CN403 CONN 2 4 6 8 10 12 14 16 1 3 5 7 9 11 13 15 HSYNC 3 KEY_AUTO PB5 PB9 C423 22pF R488 NC DDCD_SDA 3 LED_G PB17 PB12 TSUM56AK R415 10K 1 16W R433 NC CLK 3 OUT L R422 4 7K 1 16W C4...

Page 23: ...FACE A B 1 5 Monday May 09 2005 Title Size Document Number Rev Date Sheet of RB3P 3 3V B1N GB1P PA11 PB4 PA8 PB15 R94 CLKBP PB12 FR2P R104 NC NC PB2 RA3N LVA1M BB2N PB14 FCLKP CLKV RA2P NC RA1N NC 5V...

Page 24: ...12 0 1U 0805 Y5V 12V SW901 SW SPST L902 1 4 2 3 C916 470UF 16V C906 152P 1KV C919 0 01U 50V X7R PC_L_IN ON OFF R920 47_1 2W_M 12V F902 5A 24V 1206 R909 10 1206 FB901 BEAD Q902 2N3906 R915 4 7K 0805 IC...

Page 25: ...ument Number Rev Date Sheet of D202 SR24 D209 1N4148 C209 1uF 25V C228 0 001uF 25V D203 RLZ11B R212 3 9K R201 18K D204 RLZ11B C213 0 22uF 160V C207 22uF R218 100 BU_L TP2 HVO 1 Q208 MPS3906 1 3 2 ON O...

Page 26: ...EFT CN301 PHONEJACK 1 2 3 4 5 RIN CGND LIN MODE PHONE_RIGHT Doc Rev Code Title A 1 1 Thursday February 19 2004 Title Size Document Number Rev Date Sheet of DGND C311 N C RIN PHONE_LEFT RIN C310 N C L3...

Page 27: ...2 AIC1084 33CT 3 1 2 VIN ADJ Vout C109 470uF 16V R105 0 1 16W FP5001 IC101 FP5001DR 1 6 7 5 2 8 3 4 Vo DTC RT SCP Vcc GND COMP FB 5V D101 SR54 R111 15K DIP R106 33K 1 16W R109 3K 1 16W R108 47K 1 16W...

Page 28: ...LOUTN LOUTN PGNGL PGNGL LOUTP LOUTP PVCCL PVCCL BSLP VCLAMPL AGND ROSC COSC AVdd AGND VAROUTL NC VAROUTR NC AVcc MUTE MODE_OUT NC VCLAMPR BSRP PVCCR PVCCR ROUTP ROUTP PGNGR PGNGR ROUTN ROUTN PVCCR PVC...

Page 29: ...19 LCD Color Monitor Optima L903AD 29 7 PCB Layout 7 1 Main Board...

Page 30: ...19 LCD Color Monitor Optima L903AD 30...

Page 31: ...19 LCD Color Monitor Optima L903AD 31...

Page 32: ...19 LCD Color Monitor Optima L903AD 32 7 2 Power Board...

Page 33: ...19 LCD Color Monitor Optima L903AD 33...

Page 34: ...19 LCD Color Monitor Optima L903AD 34 7 3 Audio Board...

Page 35: ...19 LCD Color Monitor Optima L903AD 35...

Page 36: ...19 LCD Color Monitor Optima L903AD 36...

Page 37: ...19 LCD Color Monitor Optima L903AD 37 7 4 Key Board...

Page 38: ...a L903AD 38 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 39: ...s power key and look if the picture is normal Please reinsert and make sure the AC of 100 240 is normal Measure D701 1 8V U702 PIN2 3 3V Reinsert or check the Adapter Inverter section X401 oscillate w...

Page 40: ...ge No picture The button if under control Measure D701 1 8V U702 PIN2 3 3V Replace U401 X401 oscillate waveform is normal Check U701 D701 D702 Q702 OK OK OK OK NG Check HS VS from CN405 is normal Repl...

Page 41: ...1 oscillate waveform is normal Check Q706 Q704 is broken or CN101 solder Check Correspondent component Replace PANEL Check Correspondent component Replace U401 OK OK OK Replace X401 OK NG NG NG NG Che...

Page 42: ...Check bridge rectified circuit and F901 circuit Check start voltage for the pin3 of IC901 Check R906 R907 and Change IC901 NG Check the auxiliary voltage is bigger than 10V and smaller than 20V 1 Chec...

Page 43: ...N OFF signal Check Interface board NG OK Check U201 pin9 12V NG OK Change Q201 or Q202 NG OK Check U201 PIN7 10 or change U201 NG OK Change Q203 Q204 Check the output of PT201 PT202 Check connecter la...

Page 44: ...4 8 2 3 Keypad 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 K...

Page 45: ...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 313 20 y 329 20 Y 180 cd m2 4 Adjust the RED of color3 on factory window unti...

Page 46: ...19 LCD Color Monitor Optima L903AD 46 10 Monitor Exploded View...

Page 47: ...089G 725LAA DB D SUB 089G1745LAADVI DVI CABLE 089G412A18NIS3 POWER CORD WALL OUT FOR AUSTRA 095G8014 16 26 WIRE HARNESS E095 095G8018 3X628 LVDS CABLE 0M1G 330 4128 CR3 SCREW 0M1G 330 6 47 CR3 SCREW...

Page 48: ...T CHIPR 0 OHM 5 1 10W R125 061G0603000 RST CHIPR 0 OHM 5 1 10W R126 061G0603000 RST CHIPR 0 OHM 5 1 10W R110 061G0603102 RST CHIP 1K 1 10W 5 R129 061G0603103 RST CHIPR 10 KOHM 5 1 10W R121 061G0603103...

Page 49: ...3104 12 CER2 0603 X7R 16V 100N P C145 065G0603104 12 CER2 0603 X7R 16V 100N P C146 065G0603104 12 CER2 0603 X7R 16V 100N P C151 065G0603104 12 CER2 0603 X7R 16V 100N P C152 065G0603104 12 CER2 0603 X7...

Page 50: ...4 7UF 20 50V 105 C418 067G309V100 3 10UF _20 16V CN405 088G 35315F H D SUB 15PIN CN405 088G 35315F HJ SOC SUBD H 15P F CN406 088G 35424F C DVI 24PIN CONN F CN406 088G 35424F N DVI 24PIN CONN F 090G62...

Page 51: ...0603100 RST CHIPR 10 OHM 5 1 10W R468 061G0603100 RST CHIPR 10 OHM 5 1 10W R467 061G0603100 RST CHIPR 10 OHM 5 1 10W R466 061G0603100 RST CHIPR 10 OHM 5 1 10W R465 061G0603100 RST CHIPR 10 OHM 5 1 10W...

Page 52: ...0 KOHM 5 1 10W R485 061G0603103 RST CHIPR 10 KOHM 5 1 10W R484 061G0603103 RST CHIPR 10 KOHM 5 1 10W R471 061G0603103 RST CHIPR 10 KOHM 5 1 10W R470 061G0603103 RST CHIPR 10 KOHM 5 1 10W R416 061G0603...

Page 53: ...32 CHIP 0 1UF 50V X7R C711 065G0603104 32 CHIP 0 1UF 50V X7R C709 065G0603104 32 CHIP 0 1UF 50V X7R C706 065G0603104 32 CHIP 0 1UF 50V X7R C446 065G0603104 32 CHIP 0 1UF 50V X7R C445 065G0603104 32 C...

Page 54: ...P BEAD 600 OHM 0805 FB405 071G 56Z601 CHIP BEAD 600 OHM 0805 FB406 071G 56Z601 CHIP BEAD 600 OHM 0805 FB408 071G 56Z601 CHIP BEAD 600 OHM 0805 FB401 071G 56Z601 M CHIP BEAD 600OHM FB402 071G 56Z601 M...

Page 55: ...33P BAV99 D418 093G 6433P BAV99 D417 093G 6433P BAV99 D405 093G 6433P BAV99 D404 093G 6433P BAV99 D403 093G 6433P BAV99 D401 093G 39S 45 T DIODE ZENER RLZ36B ROHM D402 093G 39S 45 T DIODE ZENER RLZ36B...

Page 56: ...56G151 B BEAD 0805 150 OHM FB103 071G 56G151 B BEAD 0805 150 OHM FB104 071G 56G151 B BEAD 0805 150 OHM FB105 071G 56G151 B BEAD 0805 150 OHM FB106 071G 56G151 B BEAD 0805 150 OHM 715G1205 2 C3 KEY BOA...

Page 57: ...N KY16VB1000M L 10 16 C914 067G215L102 3N KY16VB1000M L 10 16 C103 067G215L102 3N KY16VB1000M L 10 16 C103 067G215L102 3R LOW E S R 1000UF 20 16V C914 067G215L102 3R LOW E S R 1000UF 20 16V C915 067G2...

Page 58: ...084G 7H200 SL 250V 2A LIHEL FUSE CN301 088G 30210K E PHONE JACK 5PIN BD901 093G 50460 10 GBU405 BD901 093G 50460 11 GBU4J BD901 093G 50460 16 U4KB80R BD901 093G 50460900 BRIDEGE DIODE GBU408 LITEON D...

Page 59: ...057G 760 4A DTA144WN3 S SOT 23 Q201 057G 760 5A DTC 144WN3 S SOT 23 Q101 057G 763 3 AO4411 SO 8 Q203 057G 763 3 AO4411 SO 8 Q204 057G 763 3 AO4411 SO 8 R107 061G0603000 RST CHIPR 0 OHM 5 1 10W R113 0...

Page 60: ...06470 RST CHIPR 47 OHM 5 1 4W R921 061G1206471 470 1206 R908 061G1206519 RST CHIPR 5 1 OHM 5 1 4W C112 065G0603104 32 CHIP 0 1UF 50V X7R C114 065G0603104 32 CHIP 0 1UF 50V X7R C115 065G0603104 32 CHIP...

Page 61: ...31500 EYELET L901 006G 31502 1 5MM RIVET T901 006G 31502 1 5MM RIVET PT202 006G 31502 1 5MM RIVET PT201 006G 31502 1 5MM RIVET NR901 006G 31502 1 5MM RIVET L902 006G 31502 1 5MM RIVET C905 006G 31502...

Page 62: ...1N4148 D209 093G 64 1152T 1N4148 D208 093G 64 1152T 1N4148 D207 093G 64 1152T 1N4148 D206 093G 64 1152T 1N4148 D205 093G 64 1152T 1N4148 IC903 056G 158 4 T H431BA C221 064G701J4740AT 0 47UF 50V C222 0...

Page 63: ...r Monitor Optima L903AD 63 033F 303 30TD1 TD00 30H P2407P30 T34G1277 GM B BASE 040G 58162435A LABEL 041G 68615 4B TCO 99 CARD 045G 76 28 RN PE BAG FO MANUAL BASE Q41G9000900 7A MANUAL E089B 089G 725HA...

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