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21.5" LCD Monitor
Service
Service
Service
Table of Contents....................................................1
Revision List...................................................................2
Important Safety Notice.................................................3
1.Monitor Specification...................................................4
2.LCD Monitor Description.........................................5
3.Operation Instruction.................................................6
3.1.General Instructions..................................................6
3.2.Control Buttons and Connections...............................6
3.3.OSD Menu.................................................................7
4.Input/Output Specification........................................18
4.1.Input Signal Connector..........................................18
4.2.Factory Preset Display Modes................................19
4.3.Panel Specification...........................................20
5.Block Diagram............................................................22
5.1.Main Board.....................................................22
5.2.Power Board..................................................23
6.Schematic..........................................................24
6.1.Main Board.......................................................24
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
6.2.Power Board....................................................28
6.3.LED Board..............................................30
6.4.Light Sensor Board..........................................31
6.5.Key Board.........................................................32
7.PCB Layout.........................................................33
7.1.Main Board......................................................33
7.2.Power Board.....................................................34
7.3.LED Board..............................................36
7.4.Light Sensor Board..........................................36
7.5.Key Board........................................................37
8.Maintainability.....................................................39
8.1.Equipments and Tools Requirement..................39
8.2.Trouble Shooting.............................................40
9.White-Balance,Luminance Adjustment...............44
10.Monitor Exploded View......................................46
11.BOM List......................................................48
SAFETY NOTICE
1
AOC e2237Fw
Horizontal Frequency
30- 80kHz
Page
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Summary of Contents for AOC e2237Fw
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Page 1: Table Of Contents
21.5" LCD Monitor AOC e2237Fw Service Service Service Horizontal Frequency 30- 80kHz Table of Contents Description Page Description Page Table of Contents…………………..…………………..…...1 6.2.Power Board..……….........28 Revision List.…...........……..2 6.3.LED Board……..………..………………………30 Important Safety Notice.….…......……..3 6.4.Light Sensor Board…..………......31 1.Monitor Specification......………....4 6.5.Key Board…....……........32 2.LCD Monitor Description……….……………………..5 7.PCB Layout..………..........33... -
Page 2: Revision List
Revision List Version Release Date Revision History TPV Model Name Aug.17,2010 Initial release TI9AA82BBXA2HN Dec.14,2010 Add New Model TI9AA82EBXRMHZ... -
Page 3: Important Safety Notice
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. -
Page 4: Monitor Specification
1. Monitor Specifications Model number e2237Fw Driving system TFT Color LED Viewable Image Size 54.7 cm Pixel pitch 0.248(H)x0.248(V)mm LCD Panel Video R, G, B Analog lnterface & Digital Interface Separate Sync. H/V TTL Display Color 16.7M Colors Dot Clock 148.5MHz... -
Page 5: Lcd Monitor Description
2. LCD Monitor Description The LCD monitor will contain a main board, a converter board, a light sensor board, a LED board and a key board which house the flat panel control logic, brightness control logic and DDC. The converter board will provide DC to DC Inverter voltage to drive the backlight of panel. Monitor Block Diagram LED Drive. -
Page 6: Operation Instruction
3. Operating Instructions 3.1 General Instructions Press the power button to turn the monitor on or off. The other control knobs are located at front panel of the monitor. By changing these settings, the picture quality can be adjusted to your personal preferences. 3.2 Control Buttons and Connections Power Key Press the Power button continuously about 2 second to turn off the monitor. -
Page 7: Osd Menu
1. Power 2. Analog (DB-15 VGA cable) 3. DVI To protect equipment, always turn off the PC and LCD monitor before connecting. 1 Connect the power cable to the AC port on the back of the monitor. 2 Connect one end of the 15-pin D-Sub cable to the back of the monitor and connect the other end to the computer's D-Sub port. - Page 8 Notes: 1) If the product has only one signal input, the item of "Input Select" is disabling to adjust. 2) If the product screen size is 4:3 or input signal resolution is wide format, the item of "Image Ratio" is disabling to adjust.
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Page 18: Input/Output Specification
4. Input/Output Specification 4.1 Input Signal Connector Analog connectors DVI connectors... -
Page 19: Factory Preset Display Modes
4.2 Factory Preset Display Modes... -
Page 20: Panel Specification
4.3 Panel Specification 4.3.1 General Features This specification applies to the 21.5 inch-wide Color a-Si TFT-LCD Module M215HW01.The display supports the Full HD - 1920(H) x 1080(V) screen format and 16.7M colors (RGB 6-bits + Hi-FRC data). All input signals are 2-channel LVDS interface and this module doesn’t contain a driver board for backlight. - Page 21 Backlight Unit 4.3.4 Optical Characteristics...
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Page 22: Block Diagram
5. Block Diagram 5.1 Main Board 14.31818MHZ Panel Interface (CN301) (X401) FLASH ROM EN25F20-100GCP Scalar IC TSUMU58NWHL-LF-1 (U402) Key Control Interface (Include ADC, OSD, MCU) (CN401) (U401) Phone Jack (CN601) H sync EEPROM EEPROM V sync DDC2_SCL AT24C02BN AT24C02BN DDC1_SCL DDC2_SDA (U101) (U102) -
Page 23: Power Board
5.2 Power Board AC input Bridge Rectifier EMI filter Transformer Rectifier diodes and Filter Start Resistor (R934, R906) Feedback PWM Control Circuit Power Switch (IC901) (Q901) Photo coupler (IC902) D801 L801 MOSFET (Q801) (CN802) PWM Control OZ9955ALN ON/OFF (U801) D802 MOSFET L802 (Q802) -
Page 24: Schematic
6. Schematic 6.1 Main Board 715G3598M01000004L FB102 VGA_B+ R105 C102 DSUB_B+ 5 BEAD 10OHM1/16W 47N 16V H_Sy nc R102 0R05 1/10W R103 1K1/16W R108 C105 DSUB_H 5 V_Sy nc R104 1K1/16W 5PF 50V DSUB_V 5 75OHM1/16W VGA_B- R109 C106 DSUB_B- 5 R106 R107 C103... - Page 25 CN301 PA[0..9] PB[0..9] PA[0..9] PB[0..9] LVB3P LVB0M RXO0- RXO0+ LVB0P PA0 LVA3P LVB3M LVB1M RXO1- RXO1+ LVB1P PA1 LVA3M LVBCKP LVB2M RXO2- RXO2+ LVB2P PA2 LVACKP LVBCKM LVBCKM RXOC- RXOC+ LVBCKP PA3 LVACKM LVB2P LVB3M RXO3- RXO3+ LVB3P PA4 LVA2P LVB2M LVA0M RXE0-...
- Page 26 SOT 252 CMVCC1 U702 G1117-33T43UF CN702 +12V D707 SM340A CMVCC1 R707 BKLT-VBRI 0R05 1/10W BKLT-EN D708 SM340A SOT 223 CONN R708 VCC3.3 NC/0R05 1/10W 5% U701 C708 C709 C707 100N 16V 100N 16V 22UF 16V VCC3.3 CMVCC1 CMVCC1 SOT 223 D703 R702 SM340A...
- Page 27 VCC3.3 FB402 VPLL VCC3.3 FB401 AVDD VCC3.3 VDVI VCC3.3 FB404 VMPLL 300OHM 300OHM 300OHM C408 C407 C414 C415 100N 16V 100N 16V C418 C413 100N 16V 100N 16V NC 100N 16V 100N 16V VDVI VMPLL VPLL AVDD VDDP VDDC VCC3.3 VDDP VCC3.3 VCTRL...
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Page 28: Power Board
6.2 Power Board Adapter board 715G3980P02000003S... - Page 29 Converter board 715G3622P01000004L R801 Q801 +12V 10K 1/8W R821 Q802 AO4419 10K 1/8W CN801 FUSE AO4419 L801 F801 D801 B360B +36Va +12V CONN L802 F802 D802 B360B +36Vb C801 22uH FUSE 220uF/25V C808 10uH 1uF 50V C810 C812 C819 100uF 50V 220uF/25V 1uF 50V C821...
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Page 30: Led Board
6.3 LED Board 715G3757T01000004L LED031 LED032 LED033 LED034 LED035 LED036 LED037 LED038 R031 R032 R033 R034 R035 R036 R037 R038 220 OHM 1/10W 5% 220 OHM 1/10W 5% 220 OHM 1/10W 5% 220 OHM 1/10W 5% 220 OHM 1/10W 5% 220 OHM 1/10W 5% 220 OHM 1/10W 5% 220 OHM 1/10W 5%... -
Page 31: Light Sensor Board
6.4 Light Sensor Board 715G3637T01000004S U711 SMBDAT DATA SMBCLK CN711 ALS-PDIC17-79NB/TR8 SMBCLK SMBDAT ZD711 ZD712 ZD713 NC/UDZS5.6B NC/UDZS5.6B NC/UDZS5.6B CONN T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL Size G3637-T0B-000-0040-090909 TPV MODEL 絬 隔 瓜 絪 腹 Key Component ALS-PDIC17-79NB/TR8 PCB NAME... -
Page 32: Key Board
6.5 Key Board 715G3646K01000004W C001 1000pF 50V C002 C003 10UF 6.3V X5R +-20% 100N 16V Buttons Button_1 R001 560R 1/10W 5% Lef t U001 CY 8C20224-12LKXI Button_2 R002 560R 1/10W 5% Down Button_3 R003 560R 1/10W 5% Power LED_Blue Lightbar_ctrl GP0[0] GP0[2] LED_Amber... -
Page 33: Pcb Layout
7. PCB Layout 7.1 Main Board 715G3598M01000004L... -
Page 34: Power Board
7.2 Power Board Adapter Board 715G3980P02000003S... - Page 35 Converter Board 715G3622P01000004L...
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Page 36: Led Board
7.3 LED Board 715G3757T01000004L 7.4 Light Sensor Board 715G3637T01000004S... -
Page 37: Key Board
7.5 Key Board 715G3646K01000004W... -
Page 39: Maintainability
8. Maintainability 8.1 Equipments and Tools Requirement Voltmeter. Oscilloscope. Pattern Generator. DDC Tool with an IBM Compatible Computer. Alignment Tool. LCD Color Analyzer. Service Manual. User Manual. -
Page 40: Trouble Shooting
8.2 Trouble Shooting 1. No Power No power Check power cable is Re-plug the power cable tightened? Check Power “On/Off” Turn on the Power “On/Off” switch is “On”? Check the LED Check the AC power indicates is OK? Replace the converter board Replace main board and check connections Replace key board and check connections... - Page 41 2. No Video (Power LED Blue) No Video (Power LED Blue) Press the power Replace the main board button is OK? Replace the converter The end board Replace the main The end board and connection Replace the LVDS/FFC Check the LVDS/FFC cable or panel cable or panel Replace the key board...
- Page 42 3. DIM DIM (image overlap, focus or flicker) Reset in factory mode The end Set to the optimal The end frequency, select the recommended frequency Readjust the phase and pixel The end clock in the user mode Pull out signal cable and Check the signal cable check “Self Test Feature and the PC...
- Page 43 4. Color is not optimal Color is not optimal Color shift Miss color Reset the factory mode Replace the signal cable In the user mode, set the” color settings” until customer satisfy The end Pull out the signal cable and check the screen color display is normal? Replace the signal cable or PC Replace the main board...
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Page 44: White-Balance,Luminance Adjustment
9. White- Balance, Luminance Adjustment Approximately 30 minutes should be allowed for warm up before proceeding white balance adjustment. How to setting MEM channel you can reference to chroma 7120 user guide or simple use “SC” key and “NEXT” Key to modify xyY value and use “ID” key to modify the TEXT description Following is the procedure to do white-balance adjust. - Page 45 C. Adjust Cool (9300K) 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 = 283 ±30, y = 297 ±30. 4.
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Page 46: Monitor Exploded View
10. Monitor Exploded View... - Page 47 Q’ty Description BEZEL RUBBER COVER_BEZEL KEY BOARD LIGHT_GUIDE LIGHT BOARD LIGHT PIPE LED BOARD PANEL MAIN BOARD SHIELDING -CASE SCALAR-COVER(135*50) POWER BOARD INVERTER-CASE(125*44) INVERTER-COVER(125*44) COVER_REAR VESE_NUT_PLATE Description STAND_BRKT Part No. Q’ty SCREW M3X6(FOR HINGE RELEASE 0M1G1030 6120 MB&PB/SHIELDING) HINGE 0Q1G 930 6120 SCREW 3X6MM SCREW(FOR HINGE STAND_CORE...
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Page 48: Bom List
AOC COMPOUND PALLET 40(1558) Q45G 77 5 PE PACKING (Y1900241) Q50G 4 10 TIE (Y1900221) Q52G 1185 99 BIG CARTON TAPE FOR AOC 708GC13401S AOC 40 PAPER SLIPSHEET(1640) Q45G 77 5 PE PACKING (Y1900241) Q50G 4 10 TIE (Y1900221) Q52G... - Page 49 ADPC91236YB1 POWER BOARD 040G 45762412B CBPC LABEL Q40G300B615 1B LABEL 033G6007 1 LENS IC902 056G 139 3A PC123Y22FZOF SHARP NR901 061G 58005 W RST NTCR 5 OHM 3A THINKING R904 061G152M47852T RST MOFR 0.47 OHM +-5% 2WS R904 061G152M47858G 0.47 OHM +-5% 2W C903 063G107K474 6S 0.47UF +-10%...
- Page 50 Q90G0201 1 HEAT SINK 705GQ957053 Q901 ASS"Y 051G 200 1 OIL FOR DISAPPEAR Q901 057G 667 21 NO-SUGGEST STP10NK70ZFP Q901 057G 667924 MOSFET SMK0965F 0M1G 930 5120 SCREW Q90G0200 1 HEAT SINK 705GQA57002 AC SOCKET ASS'Y CN901 087G 50112A CJ AC SOCKET CN901 087G 50112A DL...
- Page 51 C910 065G080510432K CAP CHIP 0805 100N 50V X7R +/-10% C920 065G080510522K CAP CHIP 0805 1U 25V X7R +/-10% C920 065G080510522K CAP CHIP 0805 1U 25V X7R +/-10% C908 065G120622272K CER 1206 2N2 500V X7R 10% C911 065G120622272K CER 1206 2N2 500V X7R 10% C911 065G1206222B2K CAP CHIP 1206 2200PF K 630V X7R...
- Page 52 R828 061G0603103 JF RST CHIPR 10K OHM +-5% 1/10W FENGHUA R807 061G0603103 JF RST CHIPR 10K OHM +-5% 1/10W FENGHUA R802 061G0603104 JF RST CHIPR 100KOHM 5% 1/10W FENGHUA R823 061G0603104 JF RST CHIPR 100KOHM 5% 1/10W FENGHUA R808 061G0603104 JW RST CHIP 100K 1/10W 5% WALSIN R827 061G0603104 JW...
- Page 53 040G 45762412B CBPC LABEL C718 067G204V181 3K CS CAP 180UF 16V 8*8 MM C716 067G204V471 2K CS CAP 470UF 10V 8*8 MM FB701 071G 55 26 S BEAD 3.5*6MM 127 OHM 25% LB3.5¡Á0.8¡Á6-2 CN701 088G 304 11 C DC POWER JACK 3P 2.5MM CN101 088G 35315FVXH D-SUB CONN 15P V/T 10.5MM WITH SCREW...
- Page 54 R702 061G0402103 JY NO-SUGGEST RST CHIPR 10KOHM +-5% 1/16W Y R439 061G0402103 JY NO-SUGGEST RST CHIPR 10KOHM +-5% 1/16W Y R438 061G0402103 JY NO-SUGGEST RST CHIPR 10KOHM +-5% 1/16W Y R412 061G0402103 JY NO-SUGGEST RST CHIPR 10KOHM +-5% 1/16W Y R407 061G0402103 JY NO-SUGGEST RST CHIPR 10KOHM +-5% 1/16W Y...
- Page 55 C709 065G040210412K CAP CHIP 0402 100N 16V X7R +/-10% C717 065G040210412K CAP CHIP 0402 100N 16V X7R +/-10% C408 065G040210412K CAP CHIP 0402 100N 16V X7R +/-10% C407 065G040210412K CAP CHIP 0402 100N 16V X7R +/-10% C406 065G040210412K CAP CHIP 0402 100N 16V X7R +/-10% C411 065G040210412K CAP CHIP 0402 100N 16V X7R +/-10%...
- Page 56 R101 061G0402101 JF RST CHIPR 100 OHM +-5% 1/16W FENGHUA R428 061G0402101 JF RST CHIPR 100 OHM +-5% 1/16W FENGHUA R428 061G0402101 JY NO-SUGGEST RST CHIPR 100 OHM +-5% 1/16W R104 061G0402102 JF RST CHIPR 1KOHM +-5% 1/16W FENGHUA R103 061G0402102 JF RST CHIPR 1KOHM +-5% 1/16W FENGHUA R705...
- Page 57 C119 065G040210232K CAP 0402 1NF K 50V X7R C120 065G040210232K CAP 0402 1NF K 50V X7R C121 065G040210232K CAP 0402 1NF K 50V X7R C714 065G040210232K CAP CHIP 0402 1N 50V X7R +/-10% C124 065G040210412K CAP CHIP 0402 100N 16V X7R 10% C115 065G040210412K CAP CHIP 0402 100N 16V X7R 10%...
- Page 58 C711 065G060310232K CAP CHIP 0603 1N 50V X7R +/-10% C419 065G0805106A7Z NO-SUGGEST 0805 10UF Z 10V Y5V C402 065G0805106A7Z NO-SUGGEST 0805 10UF Z 10V Y5V C723 065G120610625K CAP CHIP 1206 10UF K 25V X5R C720 065G120610625K CAP CHIP 1206 10UF K 25V X5R C720 065G120610625K NO-SUGGEST CAP CHIP 1206 10UF K 25V X5R...
- Page 59 C005 065G060310412K CAP CHIP 0603 100N 16V X7R +/-10% C002 065G060310605M MLCC 0603 10UF 6.3V X5R +-20% LED002 081G 14 33 EL LED 23-21B/B3C-AL1M2B16Y/2A LED003 081G 14 33 EL LED 23-21B/B3C-AL1M2B16Y/2A LED004 081G 14 33 EL LED 23-21B/B3C-AL1M2B16Y/2A LED005 081G 14 33 EL LED 23-21B/B3C-AL1M2B16Y/2A LED001 081G15BY 2 EL...
- Page 60 033G8032 4F S HR CONNECTOR U711 056G 665 62 IC ALS-PDIC17-79NB/TR8 FN-6 715G3637T01000004S OTHER PCB FR-4 18X14X1.0MM DS Q12G6300 98 RUBBER Q40G0003615A23 E2237FW POP LABEL Q40G0003615B18 37 STICKER LABEL Q40G000362420A WIN7+EPEAT SILVER+EPA 54X15 Q41G78S161517A E2237FW QSG Q44GC134101 PULP MOLD Q44GC134201...