Table of Contents
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23.6" LCD Monitor
Service
Service
Service
Description
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.................................................................8
4.Input/Output Specification.......................................12
4.1.Input Signal Connector..........................................12
4.2.Factory Preset Display Modes................................14
4.3.Panel Specification...........................................15
5.Block Diagram............................................................17
5.1.Main Board.....................................................17
5.2.Power Board..................................................18
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.Schematic..........................................................19
6.1.Main Board.......................................................19
6.2.Power Board....................................................25
6.3.Key Board.........................................................27
7.PCB Layout.........................................................28
7.1.Main Board......................................................28
7.2.Power Board.....................................................30
7.3.Key Board........................................................32
8.Maintainability.....................................................33
8.1.Equipments and Tools Requirement..................33
8.2.Trouble Shooting.............................................34
9.White-Balance,Luminance Adjustment.................38
10.Monitor Exploded View......................................40
11.BOM List......................................................42
SAFETY NOTICE
1
Envision H2476WDHAL
Horizontal Frequency
30- 83kHz
Page
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Summary of Contents for Envision H2476WDHAL
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Page 1: Table Of Contents
23.6" LCD Monitor Envision H2476WDHAL Service Service Service Horizontal Frequency 30- 83kHz Table of Contents Description Page Description Page Table Of Contents…………………..…………………..…...1 6.Schematic…………..….........19 Revision List.…...........……..2 6.1.Main Board..…….…...........19 Important Safety Notice.….…......……..3 6.2.Power Board..……….........25 1.Monitor Specification......………....4 6.3.Key Board…....……........27 2.LCD Monitor Description……….……………………..5 7.PCB Layout..………..........28 3.Operation Instruction.…………....……...6... -
Page 2: Revision List
Revision List Version Release Date Revision History TPV Model Name Sep.07.2012 Initial release HDB2NU2BAJE1DN... -
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 H2476WDHAL Driving system TFT Color LCD Viewable Image Size 59.8cm diagoanl LCD Panel Pixel pitch 0.2715mm(H) x 0.2715mm(V) Separate Sync. H/V TTL Display Color 16.7M Colors Dot Clock 170 MHz Horizontal scan range 30 kHz -83 kHz Horizontal scan Size(Maximum) 521.28mm... -
Page 5: Lcd Monitor Description
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 part will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips each voltage. -
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 can be adjusted to your personal preferences. * The power cord should be connected. -
Page 7: Connecting The Monitor
Connecting the Monitor Cable Connections On Back of Monitor and Computer: 1. Power . 2. HDMI 3. DVI 4. Analog (DB-15 VGA cable 5. Audio 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 (Optional-Requires a video card with HDMI port)- Connect one end of the HDMI cable to the back of the monitor and connect the other end to the computer's HDMI port. -
Page 8: Osd Menu
3.3 OSD Menu 1) Press the MENU-button to activate the OSD window. 2) Press - or + to navigate through the functions. Once the desired function is highlighted, press the MENU-button to activate sub-menu . Once the desired function is highlighted, press MENU-button to activate it. 3) Press - or + to change the settings of the selected function. - Page 9 Function Control Illustration...
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Page 12: Input/Output Specification
4. Input/Output Specification 4.1 Input Signal Connector Analog connectors Pin Number 15-Pin Side of the Signal Cable Video-Red Video-Green Video-Blue Ground Detect Cable GND-R GND-G GND-B Ground Ground DDC-Serial data H-sync V-sync DDC-Serial clock DVI connectors Pin No. Signal Name Pin No. - Page 13 Pin No. Signal Name Pin No. Signal Name Pin No. Signal Name TMDS Data 2+ TMDS Data 0 DDC/CEC Ground TMDS Data 2 TMDS Clock + +5V Power Shield TMDS Clock TMDS Data 2 Hot Plug Detect Shield TMDS Data 1+ TMDS Clock TMDS Data 1Shield...
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Page 14: Factory Preset Display Modes
4.2 Factory Preset Display Modes Standard Resolution H. Frequency (kHz) V. Frequency (Hz) 640x480@60Hz 31.469 59.94 640x480@72Hz 37.861 72.809 640x480@75Hz 37.5 800x600@56Hz 35.156 56.25 800x600@60Hz 37.879 60.317 SVGA 800x600@72Hz 48.077 72.188 800x600@75Hz 46.875 1024x768@60Hz 48.363 60.004 1024x768@70Hz 56.476 70.069 1024x768@72Hz 57.669 71.996 1024x768@75Hz... -
Page 15: Panel Specification
4.3 Panel Specification 4.3.1 General Features LCM236H3L01A00C M236HGE-L10 is a 23.6” TFT Liquid Crystal Display module with WLED Backlight unit and 30Pins 2ch-LVDS interface. This module supports 1920 x 1080 Full HD mode and can display up to 16.7M colors. 4.3.2 Display Characteristics ITEMS Unit... - Page 16 4.3.4 Backlight Unit Value Parameter Symbol Unit Typ. Max. Light Bar Input Voltage 47.3 54.4 63.2 Light Bar Input Current Power Consumption LED Life Time 30000 IFP LED Peak forward current 4.3.5 Optical Characteristics Conditions Item Symbol Min. Typ. Max. Unit 0.64 0.338...
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Page 17: Block Diagram
5. Block Diagram 5.1 Main Board Key Control LCD Interface interface (CN408) (CN404) Scalar IC NT68676UFG Crystal EEPROM (Include MCU, ADC, OSD) 12MHz Pm25LD020C-SCE (U401) (X401) (U402) SCL_DVI D-HS SDA_DVI D-VS EEROM EEROM EEROM M24C02-RMN6TP M24C02-RMN6TP M24C02-RMN6TP (U109) (U101) (U105) HDMI -SCL DDCA-SDA HDMI-SDA... -
Page 18: Power Board
5.2 Power Board AC input 14.5V Transformer Bridge Rectifier EMI filter Rectifier (T901) diodes and Filter Start Resistor (R913) Feedback Power Switch PW Control Circuit (Q904) LD7576JGR (IC901) Photo coupler (IC902) 14.5V L801 D801 (CN804) Q801 PWM Control OZ9998BGN ON/OFF (U801) -
Page 19: Schematic
6. Schematic 6.1 Main Board 715G5325M01000004Q RED+ FB101 0R05 OHM R102 100R 1/16W 5% C102 47nF 16V RED- GREEN+ FB102 0R05 OHM R103 100R 1/16W 5% C103 47nF 16V GREEN- BLUE+ FB103 0R05 OHM R104 100R 1/16W 5% C104 47nF 16V BLUE- VGA5V R110... - Page 20 CN501 SHELL1 HDMI1/D2+ HDMI1_D2+ 5 D2 Shield HDMI1/D2- SHELL3 HDMI1_D2- 5 HDMI1/D1+ HDMI1_D1+ 5 D1 Shield HDMI1/D1- HDMI1_D1- 5 HDMI1/D0+ HDMI1_D0+ 5 D0 Shield HDMI1/D0- HDMI1_D0- 5 HDMI1/CK+ HDMI1_CK+ 5 DET_HDMI CK Shield HDMI1/CK- HDMI1_CK- 5 R753 CEC3* CEC_CTRL 5 CE Remote HDMI_SCL DDC CLK...
- Page 21 VCC3.3 DVDD FB401 FB402 DVI_VCC +5V_SB VCC3.3 120OHM 120OHM C405 C407 C409 C410 0.1UF 16V 0.1UF 16V 0.1UF 16V 0.1UF 16V VCC3.3 MPLL_VDD 3,4,7,8 +5V_SB AUDIO_VDD ADC_VDD CVDD DVDD C403 C402 DVI_VCC ADC_1V8 MVDD MVDD 10uF 16V 10uF 16V C404 C406 0.1UF 16V 0.1UF 16V...
- Page 22 PA[0..9] PB[0..9] PA[0..9] PB[0..9] LVB0M CN408 LVA0M LVB0P CONN LVA0P LVB1M LVB0M RXO0- LVA1M LVB1P LVB0P RXO0+ LVA1P LVB2M LVB1M RXO1- LVA2M LVB2P LVB1P RXO1+ LVA2P LVBCKM LVB2M RXO2- LVACKM LVBCKP LVB2P RXO2+ LVACKP LVB3M LVA3M LVB3P LVBCKM RXOC- LVA3P LVBCKP RXOC+ LVB3M...
- Page 23 +5V_AUDIO +5V_AUDIO +5V_AUDIO R631 +5V_SB 10K 1/16W 5% C626 D601 FB601 NC/1uF 10V LL4148 +5V_AUDIO R630 R607 R632 R601 R602 10K 1/16W 5% 3,4,5,8 +5V_SB Volume 120OHM 10K 1/16W 5% 10K 1/16W 5% 1K 1/16W 5% 100R 1/16W 5% R606 C601 C605 MUTE...
- Page 24 +5V_SB VCC3.3 U701 +5V_SB VCC3.3 VCC3.3 VOUT +5V_SB 3,4,5,7 C702 R701 C701 220UF 16V 10K 1/16W 5% 0.1UF 16V C705 C703 C704 0.1UF 16V 100uF16V 0.1UF 16V CN701 2011/1/3 R702 1K 1/16W 5% PWMB* Adj_BACKLIGHT 5 VCC3.3 U702 VCC3.3 NC/AP2114D-3.3TRG1 R704 VOUT 10K 1/16W 5%...
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Page 25: Power Board
6.2 Power Board 715G4497P05000001M R929 100 OHM 1/4W BD901 C916 2.2N 630V F801 R930 100 OHM 1/4W 0R05 1/4W +14.5V R903 100 OHM 1/4W C928 2.2N 630V R904 ZD901 250OHM2W MTZJ T-72 22B KBP306G-05 D901 C918 NC/SR5150 330UF/25V R905 D902 470OHM +-5% 1/8W Q904 T901... - Page 26 FB802 D801 L801 CN803 +14.5V C801 47UH BEAD Q801 330uF 25V R804 C814 SK310B 100N 50V 10 OHM 1/8W APM8005KCTRG C810 0.47UF 50V R801 R815 R819 R820 R821 R822 CONN C809 100KOHM +-1% 1/8W ON/OFF R814 33UF 100V 10K 1/8W 0 OHM 1/8W 0 OHM 1/8W C802...
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Page 27: Key Board
6.3 Key Board 715G4407K02000001S LED_1# LED_2# LED01 CN001 R002 2KOHM 1% 1/10W LBADC2 LBADC1 POWER R003 3K +-% 1/10W LED_1# LED_2# R004 3K +-% 1/10W ZD007 ZD006 C003 RLZ5.6B C004 R005 2KOHM 1% 1/10W NC/0.1uF 50V NC/CONN RLZ5.6B NC/0.1uF 50V SGND SW001 SW002... -
Page 28: Pcb Layout
7. PCB Layout 7.1 Main Board 715G5325M01000004Q... -
Page 30: Power Board
7.2 Power Board 715G4497P05000001... -
Page 32: Key Board
7.3 Key Board 715G4407K02000001S... -
Page 33: 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 34: Trouble Shooting
8.2 Trouble Shooting 1. No Power No power Check power cable is Re-plug the power cable tigtened? Check Power “On/Off” Turn on the Power “On/Off” switch is “On”? Check the LED Check the AC power indicate is OK? Replace the power board and check connections Replace main board and check connections Replace key board and check connections... - Page 35 2. No Video (Power LED Blue) No Video (Power LED Blue) Press the power Replace the main board button is OK? Replace the power The end board and connection Replace the main The end board and connection Replace the LVDS/FFC Check the LVDS/FFC cable or panel (T901)
- Page 36 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 37 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 38: 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 39 5. Adjust the GREEN on factory window until chroma 7120 indicator reached the value G=100 6. Adjust the BLUE on factory window until chroma 7120 indicator reached the value B=100 7. Repeat above procedure (item 4, 5, 6) until chroma 7120 RGB value meet the tolerance =100±2 D.
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Page 40: Monitor Exploded View
10. Monitor Exploded View... - Page 41 Description BEZEL L236WA-VS1-vss2 KEY BOARD LCD TPM236H3-HGEP01 C1A FQ MAIN BOARD MAINFRAME PLATE HINGE REAR_COVER HINGE ASS'Y STAND_COVER STAND BASE Part No. Description FOOT PAD 0D1G1030 6120 H1 SCREW M3x6(MB/MAIN_FRAME) INSULATING SHEET Q01G1740 10225 HX SCREW M4x10(COVER_STAND/HINGE) POWER BOARD 0D1G1040 8120 SCREW(PB/MAIN_FRAME) CLIP Q01G1740 10225 HX...
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Page 42: Bom List
089G404A15N HL AC POWER CORD 1500mm 2nd source E08901 089G404A15N IS AC POWER CORD 1500 ECN404 095G8014 6XJ09 HARNESS 6P(2008)-6P(CI1406S) 180mm 708GKA57XWPQ01 ENVISION 40 (1568) 050G 600 1 W WHITE STRAP (1G004991) Q50G 4 10 TIE (Y1900221) Q52G 1185110 TAPE E750... - Page 43 FFC CABLE 30 230 1.0MM E08904 089G 17356C554 AUDIO CABLE 1800MM E08904 089G 17356G554 AUDIO CABLE 1800MM Q41G78S1673 1D Envision EU& RU WARRANTY CARD Q45G2010M0201A P.E. BAG (INSTR. BOOK) Q70G24C167315A CD MANUAL H2476WDHAL 040G 58162435A MANUAL P/N LABEL Q40G0001673 2A...
- Page 44 R636 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN R616 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN R443 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN R442 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN R435 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN R425 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN...
- Page 45 R112 061G0402101 JT RST CHIP 100R 1/16W 5% TZAI YUAN R118 061G0402101 JT RST CHIP 100R 1/16W 5% TZAI YUAN R119 061G0402101 JT RST CHIP 100R 1/16W 5% TZAI YUAN R125 061G0402101 JT RST CHIP 100R 1/16W 5% TZAI YUAN R126 061G0402101 JY RST CHIPR 100 OHM +-5% 1/16W YAGEO...
- Page 46 R704 061G0402103 JT RST CHIP 10K 1/16W 5% TZAI YUAN R601 061G0402103 JT RST CHIP 10K 1/16W 5% TZAI YUAN R115 061G0402103 JT RST CHIP 10K 1/16W 5% TZAI YUAN R160 061G0402103 JT RST CHIP 10K 1/16W 5% TZAI YUAN R161 061G0402103 JT RST CHIP 10K 1/16W 5% TZAI YUAN...
- Page 47 R121 061G0402222 JY RST CHIPR 2.2KOHM +-5% 1/16W YAGEO R120 061G0402222 JY RST CHIPR 2.2KOHM +-5% 1/16W YAGEO R124 061G0402223 JT RST CHIP 22K 1/16W 5% TZAI YUAN R134 061G0402223 JT RST CHIP 22K 1/16W 5% TZAI YUAN R157 061G0402223 JT RST CHIP 22K 1/16W 5% TZAI YUAN R752 061G0402223 JT...
- Page 48 R122 061G0402472 JY RST CHIPR 4.7KOHM +-5% 1/16W YAGEO R708 061G0402473 JT RST CHIP 47K 1/16W 5% TZAI YUAN R708 061G0402473 JY RST CHIPR 47KOHM +-5% 1/16W YAGEO R721 061G0402563 JT RST CHIPR 56KOHM 1/16W TZAI YUAN R721 061G0402563 JY RST CHIPR 56KOHM 1/16W YAGEO R609 061G0402622 JT...
- Page 49 C704 065G040210412K CAP 0402 0.1UF 10% 16V X7R C705 065G040210412K CAP 0402 0.1UF 10% 16V X7R C708 065G040210412K CAP 0402 0.1UF 10% 16V X7R C712 065G040210412K CAP 0402 0.1UF 10% 16V X7R C714 065G040210412K CAP 0402 0.1UF 10% 16V X7R C715 065G040210412K CAP 0402 0.1UF 10% 16V X7R...
- Page 50 C418 065G040210412K CAP CHIP 0402 100nF 16V X7R C414 065G040210412K CAP CHIP 0402 100nF 16V X7R C412 065G040210412K CAP CHIP 0402 100nF 16V X7R C411 065G040210412K CAP CHIP 0402 100nF 16V X7R C410 065G040210412K CAP CHIP 0402 100nF 16V X7R C614 065G0402105A5K CAP CHIP 0402 1UF K 10V X5R...
- Page 51 C608 065G040233131J 0402 330PF J 50V NPO C609 065G040233131J 0402 330PF J 50V NPO C110 065G040247312K CAP 0402 47NF 10% 16V X7R C109 065G040247312K CAP 0402 47NF 10% 16V X7R C108 065G040247312K CAP 0402 47NF 10% 16V X7R C104 065G040247312K CAP 0402 47NF 10% 16V X7R C103 065G040247312K...
- Page 52 FB410 071G 56K121 M CHIP BEAD 120OHM 6A MGLB2012-120T-LF FB601 071G 56K121 M CHIP BEAD 120OHM 6A MGLB2012-120T-LF FB604 071G 56K121 M CHIP BEAD 120OHM 6A MGLB2012-120T-LF FB605 071G 56K121 M CHIP BEAD 120OHM 6A MGLB2012-120T-LF FB602 071G 56K121 M CHIP BEAD 120OHM 6A MGLB2012-120T-LF FB603 071G 56K121 M...
- Page 53 E715 715G4407K02000001S KEY BOARD PCB PLPCCC531EQE4 POWER G4497-P03-000-0010-69-120229 H40G 45762429A LABEL GND1 009G6005 1 GND TERMINAL U902 056G 139 9 IC EL817M(X) photocoupler DIP-4 U902 056G 139 3A PC123Y22FZOF SHARP NR901 061G 5810X NTCR 8R 20% 4W 8D2-14 MCS NR901 061G 58809MEN RST NTCR 8OHM +/20%/NMM01 4A XIANZHENG C908...
- Page 54 Q55G 100625 TIN STICK_LOW ARGENTUM U901 056G 379529 AC/DC CONVERTER IC LD7576AGR SOP-7 U801 056G 700 11 LED DRIVER OZ9998BGN-A1-0-TR SOP-16 Q801 057G 763 92 FET P8008HV 4A/80V SOP-8 Q801 057G 763947 MOSFET APM8005KCTRG 6A 80V SOP-8 R811 061G0805000 JF RST CHIPR 0 OHM +-5% 1/8W FENGHUA RJ801 061G0805000 JF...
- Page 55 R802 061G0805304 JT RST CHIP 300K 1/8W 5% TZAI YUAN R803 061G0805304 JT RST CHIP 300K 1/8W 5% TZAI YUAN R809 061G08053303FT RST CHIP 330K 1% 1/8W R809 061G08053303FY RST CHIP 330K 1/8W 1% R920 061G08054701FF RST CHIPR 4.7KOHM +-1% 1/8W FENGHUA R920 061G08054701FT RST CHIP 4K7 1/8W 1%...
- Page 56 C812 065G080510131J CAP CHIP 0805 100PF J 50V NPO C813 065G080510131J CAP CHIP 0805 100PF J 50V NPO C812 065G080510131J CAP CHIP 0805 100P 50V NP0 +/-5% C813 065G080510131J CAP CHIP 0805 100P 50V NP0 +/-5% C923 065G080510232K MLCC 0805 1NF 50V X7R +/-10% SAMSUNG C803 065G080510232K MLCC 0805 1NF 50V X7R +/-10% SAMSUNG...
- Page 57 C916 065G120622272K CAP 1206 2.2NF 10% 500V X7R C916 065G120622272K CER 1206 2N2 500V X7R 10% C917 065G120622272K CER 1206 2N2 500V X7R 10% C928 065G120622272K CER 1206 2N2 500V X7R 10% C929 065G120622272K CER 1206 2N2 500V X7R 10% D801 093G 60S509 T SCHOTTKY BR310 T/R 3A 100V SMB...
- Page 58 J802 095G 90 23 JUMP WIRE - - J803 095G 90 23 JUMP WIRE - - J804 095G 90 23 JUMP WIRE - - J805 095G 90 23 JUMP WIRE - - J806 095G 90 23 JUMP WIRE - - J807 095G 90 23 JUMP WIRE - -...