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20" LCD Color Monitor
Service
Service
Service
Description
Table Of Contents......................................................1
Revision List........................................................2
1. Monitor Specification...............................................4
2. LCD Monitor Description........................................5
3. Operation Instruction............................................6
3.1. General Instructions.........................................6
3.2. Control Buttons.................................................6
3.3 Adjusting the Picture..........................................7
4. Input/Output Specification.......................................9
4.1. Input Signal Connector.........................................9
4.2. Factory Preset Display Modes...........................10
4.3. Power Supply Requirements...............................10
5. Panel Specification.........................................11
5.1. General Feature...............................................11
5.2. Optical Characteristics.....................................12
6. Block Diagram.....................................................13
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS
AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING ELECTRONIC
EQUIPMENT CONTAINING HIGH VOLTAGES.
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
TABLE OF CONTENTS
Page Description
6.1 Software Flow Chart....................................13
6.2. Electrical Block Diagram..................................15
7. Schematic.....................................................17
7.1 Main Board....................................................17
7.2 Power Board...............................................23
7.3 Key Board..............................................25
8. PCB Layout.....................................................26
8.1. Main Board......................................................26
8.2. Power Board........................................................28
8.3. Key Board...............................................30
9. Maintainability................................................31
9.1. Equipments and Tools Requirement..............31
9.2.Trouble Shooting.......................................32
10.White-Balance, Luminance adjustment..........38
11 Monitor Exploded View...................................40
12. BOM List...................................................41
SAFETY NOTICE
1
AOC 201S
Horizontal Frequency
30 kHz - 82kHz
Page
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Summary of Contents for AOC 201S
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Page 1: Table Of Contents
20" LCD Color Monitor AOC 201S Service Service Service Horizontal Frequency 30 kHz - 82kHz TABLE OF CONTENTS Description Page Description Page Table Of Contents..……......…..1 6.1 Software Flow Chart……..……………………….13 Revision List.…........……..2 6.2. Electrical Block Diagram…….……………..…..15 1. Monitor Specification......………..4 7. Schematic……………........17 2. -
Page 2: Revision List
20" LCD Color Monitor AOC 201S Revision List Version Date Revision History TPV Model Name Apr.-15-07 Initial release TA6MM5DBACA2N... - Page 3 AOC 201S Important Safety Notice Proper service and repair is important to the safe, reliable operation of all AOC Company Equipment. The service procedures recommended by AOC and described in this service manual are effective methods of performing service operations. Some of these service operations require the use of tools specially designed for the purpose. The special tools should be used when and as recommended.
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Page 4: Monitor Specification
20" LCD Color Monitor AOC 201S 1. Monitor Specification Items Description Driving system TFT Color LCD Size 51cm (20”) Panel M201P1-L03 Display area 432.5(H) x332.0 (V) Pixel pitch 0.2916mm(H) x 0.2916mm(V) Viewable angle 160˚ (H) 160˚ (V) LCD Panel Response time (typ.) Brightness 300cd/m²... -
Page 5: Lcd Monitor Description
20" LCD Color Monitor AOC 201S 2. LCD Monitor Description The LCD Monitor will contain a main 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. -
Page 6: Operation Instruction
20" LCD Color Monitor AOC 201S 3. Operation Instructions 3.1 General Instructions Press the power button to turn the monitor on or off. The other control buttons are located at front of the panel. By changing these settings, the picture can be adjusted to your personal performance. -
Page 7: Adjusting The Picture
20" LCD Color Monitor AOC 201S 3.3 Adjust the Picture OSD Settings • 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 the function selected has a sub-menu, press + or - again to navigate through the sub-menu functions. - Page 8 20" LCD Color Monitor AOC 201S...
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Page 9: Input/Output Specification
20" LCD Color Monitor AOC 201S 4. Input/Output Specification 4.1 Input Signal Connector Analog connector Signal Signal Red Video Green Video N.C. Blue Video N.C. DDC-Serial Data DDC Return Horizontal Sync Red GND Vertical Sync Green GND DDC-Serial Clock Blue GND... -
Page 10: Factory Preset Display Modes
20" LCD Color Monitor AOC 201S 4.2 Factory Preset Display Modes 4.3 Power Supply Requirements : 100 V ~ 240 V ±10％ A/C Line voltage range : 50 ± 3Hz, 60 ± 3Hz A/C Line frequency range Current : 5.0A max Peak surge current : <... -
Page 11: Panel Specification
20" LCD Color Monitor AOC 201S 5. Panel Specification 5.1 General Feature Mechanical Information... -
Page 12: Optical Characteristics
20" LCD Color Monitor AOC 201S 5.2 Optical Characteristics 5.2.1 Test Conditions 5.2.2 Optical Specifications The relative measurement methods of optical characteristics are shown... -
Page 13: Block Diagram
20" LCD Color Monitor AOC 201S 6. Block Diagram 6.1 Software Flow Chart... - Page 14 20" LCD Color Monitor AOC 201S REMARK: 1) MCU initialize. 2) Is the EEprom blank? 3) Program the EEprom by default values. 4) Get the PWM value of brightness from EEprom. 5) Is the power key pressed? 6) Clear all global flags.
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Page 15: Electrical Block Diagram
20" LCD Color Monitor AOC 201S 6.2 Electrical Block Diagram 6.2.1 Main Board LCD Interface (CN101) Flash Memory EEPROM Scalar IC TSUM16AK-LF-1 PM25LV512-25SCE M24C16 (U402) (Include MCU, ADC, OSD) (U403) (U401) H sync V sync Crystal Key Board D-Sub 14.318MHz... - Page 16 20" LCD Color Monitor AOC 201S 6.2.2 Inverter / Power Board AC inlet Filter 12V/5V Rectifier and Transform Rectifier and filter filter D908, D909 To main board Start circuit R904, R931, R938 OVP/OCP circuit Switching circuit Feedback PWM control circuit IC902, IC&MOSFET...
- Page 18 20" LCD Color Monitor AOC 201S 7. Schematic 7.1 Main Board TSUM16AWK SCHEMATIC XGA/SXGA LVDS OUTPUT GNDR GNDR GNDG GNDG GNDB GNDB HSY NC HSY NC VCC1.8 VCC3.3 +12V VSY NC VSY NC DDCA_SDA DDCA_SDA DDCA_SCL DDCA_SCL DET_VGA DET_VGA DDC_WP DDC_WP VCC1.8...
- Page 19 20" LCD Color Monitor AOC 201S SOT-223 U701 VCTRL +3V3 NC/LT1117-18 R702 +3V3 51£[ 1/16W C701 C703 C704 VCC1.8 100uF/25V C702 VCC1.8 4.7uF/16V D701 1N4148 R703 Q702 BL_ADJ(DC) 2K£[ 1/16W 0V ~ 3.3V 4.7K D702 CHT2907 0V ~ 5V 4.7K 4.7K...
- Page 20 20" LCD Color Monitor AOC 201S CN405 FB410 0£[ 1/16W DB15 RED+ R434 56£[ 1/16W C432 0.047uF RED- GREEN+ FB411 0£[ 1/16W R435 56£[ 1/16W C433 0.047uF GREEN- BLUE+ FB412 0£[ 1/16W R436 56£[ 1/16W C434 0.047uF BLUE- PC5V R437 470£[ 1/16W...
- Page 21 20" LCD Color Monitor AOC 201S VDVI VMPLL VPLL AVDD VDDP VDDC VCC1.8 FB401 VDDC VCC3.3 FB402 AVDD VCC1.8 600 OHM VCC3.3 600 OHM C403 C407 U401 VCC3.3 4.7uF/16V 0.1uF VCTRL VCTRL C404 C405 C406 0.1uF 0.1uF 0.1uF NC/LVACKP/NC RIN0P...
- Page 22 20" LCD Color Monitor AOC 201S PB[0..5] PB[0..5] CN102 CN103 PA[0..7] RB1P PA[0..7] PA[0..7] RB1N PA[0..7] LVACKP RB2P RA3N FB0N RB3N RA1P LVACKM RB2N RA3P FB0P RB3P LVA2P RA1N RB3P RA2P LVA2M FB1N RB3N RA2N RB2N LVA1P FB1P RA2N RA2P RB2P PB[6..11]...
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Page 23: Power Board
IC904 R921 IC903 F901 0805 KIA431A-AT/P C913 FUSE R922 R924 0805 2.4K 0805 1% CN901 AOC (Top Victory) Electronics Co., Ltd. SOCKET Title 1.POWER OUTPUT 12V & 5 V Size Document Number G1899-1-HP-X-1-060720 Date: Friday , July 21, 2006 Sheet... - Page 24 C831 C827 BAV99 BAV99 R824 0.0033uF/16V 470pF/50V D805 BAV99 Q805 1/8W AM9945 AOC (Top Victory) Electronics Co., Ltd. Title R830 R831 HP W19 series 17" 19'' 4 LAMPS INVERTER 1/8W 7.5K 0805 Size Document Number G1899-1-HP-X-1-060720 Date: Tuesday , February 27, 2007...
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Page 25: Key Board
20" LCD Color Monitor AOC 201S 7.3 Key Board... -
Page 26: Pcb Layout
20" LCD Color Monitor AOC 201S 8. PCB Layout 8.1 Main Board... - Page 27 20" LCD Color Monitor AOC 201S...
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Page 28: Power Board
20" LCD Color Monitor AOC 201S 8.2 Power Board... - Page 29 20" LCD Color Monitor AOC 201S...
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Page 30: Key Board
20" LCD Color Monitor AOC 201S 8.3 Key Board... -
Page 31: Maintainability
20" LCD Color Monitor AOC 201S 9. Maintainability 9.1Equipments and Tools Requirement 1. Multi-meter. 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 32: Trouble Shooting
20" LCD Color Monitor AOC 201S 9.2 Trouble Shooting 9.2.1 Main Board 1、 、 、 、 No power No power Press power key and look if the picture is normal Please reinsert and make sure the AC of 100-240 is normal Reinsert or check Measure U702 PIN2=3.3V... - Page 33 20" LCD Color Monitor AOC 201S No picture (LED is orange) No picture The button if X401 oscillate Replace X401 under control waveform is normal Check reset circuit of Check Correspondent U401 is normal component Measure U702 PIN2=3.3V D702(-)=1.8V,U701 PIN2=3V...
- Page 34 20" LCD Color Monitor AOC 201S White Screen White screen X401 oscillate Measure Q704 base waveform is normal is low level? Replace X601 Check CN101 solder? Check reset circuit of U401 is normal Check Correspondent Check Correspondent component. component. Replace PANEL...
- Page 35 20" LCD Color Monitor AOC 201S 9.2.2 Power Board 1. No Power No power Check to CN902 Pin1, 2 =12V and Pin 3,4 =5V Check Interface board Check AC line volt 120V or 220V Change F901, check BD901,Q903,IC901 Check the voltage of C905 (+)
- Page 36 20" LCD Color Monitor AOC 201S 2. W/LED No Backlight Check C811 (+) =12V Check Q806, Q805 Check ON/OFF signal Check Interface board Check IC801 PIN2=5V, Pin9 =12V, Voltage of C905 (+) Change Q801,Q802,Q803 Check the Pin1,Pin15 of IC801 have square wave...
- Page 37 20" LCD Color Monitor AOC 201S 9.2.3 Key Board OSD is unstable or not working Is Keypad board connecting normally? Connect Keypad Board Is Button Switch normally? Replace Button Switch Replace Keypad Board Is Keypad board normally? Check main board...
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Page 38: White-Balance, Luminance Adjustment
= 313±20, y = 329 ±20, Y =180 cd/m 3. Into factory mode of 201S Turn on power, press the MENU button, pull out the power cord, and then plug the power cord. Then the factory OSD will be at the left top of the panel. - Page 39 20" LCD Color Monitor AOC 201S C. Adjust sRGB color-temperature 1. Switch the chroma-7120 to RGB-Mode (with press “MODE” button) 2. Switch the MEM.channel to Channel 9 (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/m 4.
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Page 40: Monitor Exploded View
20" LCD Color Monitor AOC 201S 11. Monitor Exploded View Item Part No Description Item Part No Description Q34G1465 GMG1T BEZEL(20") 0M1G 130 6120 SCREW M3X6 033G4792 1 X LENS A15G0042 4 MAIN FRAME 033G4791 GM L KEY PAD A85G0014 1... -
Page 41: Bom List
20" LCD Color Monitor AOC 201S 12. BOM List TA6MM5DBACA2N Location Part No. Description 044G6002608 2A PAPER BOARD 044G9003210 CORNER PAPER 044GA008 1 EPS(L) 044GA008 2 EPS(R) 044GH600 1 HANDLE2 050G 600 4 HANDLE 1 052G 1186 SMALL TAPE 052G6025 13 34... - Page 42 20" LCD Color Monitor AOC 201S C712 067G215L101 4N KY25VB100M-L 6.3*11 C705 067G305V109 3 ELCAP 105℃ 1UF M 16V C403 067G305V479 3 ELCAP 4.7UF M 16V C702 067G305V479 3 ELCAP 4.7UF M 16V CN405 088G 35315F H D-SUB 15PIN X401 093G 22 53 CRYSTAL 14.318MHZHC-49US...
- Page 43 20" LCD Color Monitor AOC 201S R429 061G0603101 RST CHIPR 100 OHM +-5% 1/10W R441 061G0603101 RST CHIPR 100 OHM +-5% 1/10W R442 061G0603101 RST CHIPR 100 OHM +-5% 1/10W R443 061G0603101 RST CHIPR 100 OHM +-5% 1/10W R445 061G0603101...
- Page 44 20" LCD Color Monitor AOC 201S R448 061G0603222 RST CHIPR 2.2 KOHM +-5% 1/10W R449 061G0603222 RST CHIPR 2.2 KOHM +-5% 1/10W R405 061G0603223 RST CHIPR 22 KOHM +-5% 1/10W R414 061G0603241 RST CHIPR 240 OHM +-5% 1/10W R403 061G0603390 0F...
- Page 45 20" LCD Color Monitor AOC 201S C713 065G0603104 32 CHIP 0.1UF 50V X7R C714 065G0603104 32 CHIP 0.1UF 50V X7R C715 065G0603104 32 CHIP 0.1UF 50V X7R C718 065G0603104 32 CHIP 0.1UF 50V X7R C721 065G0603104 32 CHIP 0.1UF 50V X7R...
- Page 46 20" LCD Color Monitor AOC 201S D415 093G 39147SEM ZMM5V6ST D406 093G 39147SEM ZMM5V6ST D408 093G 39147SEM ZMM5V6ST D409 093G 39147SEM ZMM5V6ST D410 093G 39147SEM ZMM5V6ST D411 093G 39147SEM ZMM5V6ST D412 093G 39147SEM ZMM5V6ST D703 093G 60230 BAT54C(L43) D407 093G 64 42 P...
- Page 47 20" LCD Color Monitor AOC 201S CN804 033G8021 2E U WAFER 040G 45762420A LABEL 25X6MM IC902 056G 139 3A PC123Y22FZOF NR901 061G 58080 WT 8 OHM NCT C816 065G 3J2206ET 22PF 5% SL 3KV TDK C834 065G 3J2206ET 22PF 5% SL 3KV TDK...
- Page 48 20" LCD Color Monitor AOC 201S Q903 057G 667 22 FQPF8N80C AM1G1730 8128 GP SCREW M3*8 Q90G0035 1 HEAT SINK 705GQ7K0 93001 D908 ASS'Y D908 093G 60252 SP20150 AM1G1730 8128 GP SCREW M3*8 Q90G0009 1 HEAT SINK 705GQ7K0 93003 D909 ASS'Y...
- Page 49 20" LCD Color Monitor AOC 201S R913 061G0805104 RST CHIP 100K 1/8W 5% R813 061G0805105 1MOHM 1/10W R846 061G0805105 1MOHM 1/10W R847 061G0805105 1MOHM 1/10W R848 061G0805105 1MOHM 1/10W R849 061G0805105 1MOHM 1/10W R860 061G0805105 1MOHM 1/10W R809 061G0805184 RST CHIPR 180 KOHM +-5% 1/8W...
- Page 50 20" LCD Color Monitor AOC 201S R927 061G1206103 10 KOHM 1/8W R904 061G1206104 RST CHIPR 100 KOHM +-5% 1/4W R931 061G1206104 RST CHIPR 100 KOHM +-5% 1/4W R938 061G1206104 RST CHIPR 100 KOHM +-5% 1/4W R807 061G1206220 RST CHIPR 22 OHM +-5% 1/4W...
- Page 51 20" LCD Color Monitor AOC 201S C801 065G0805104 32 CHIP 0.1U 50V X7R C804 065G0805105 22 CHIP 1UF 25V X7R 0805 C806 065G0805105 22 CHIP 1UF 25V X7R 0805 C840 065G0805105 22 CHIP 1UF 25V X7R 0805 C909 065G0805221 31...
- Page 52 20" LCD Color Monitor AOC 201S L902 006G 31502 1.5MM RIVET NR901 006G 31502 1.5MM RIVET PT801 006G 31502 1.5MM RIVET PT802 006G 31502 1.5MM RIVET Q903 006G 31502 1.5MM RIVET T901 006G 31502 1.5MM RIVET 006G 31502 1.5MM RIVET...