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18" 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................................13
4.3.Panel Specification...........................................14
5.Block Diagram............................................................16
5.1.Main Board.....................................................16
5.2.Power Board..................................................17
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..........................................................18
6.1.Main Board.......................................................18
6.2.Power Board....................................................22
6.3.Key Board.........................................................24
7.PCB Layout.........................................................25
7.1.Main Board......................................................25
7.2.Power Board.....................................................29
7.3.Key Board........................................................33
8.Maintainability.....................................................34
8.1.Equipments and Tools Requirement..................34
8.2.Trouble Shooting.............................................35
9.White-Balance,Luminance Adjustment.................39
10.Monitor Exploded View......................................40
11.BOM List......................................................43
SAFETY NOTICE
1
Envision H976WDL
Horizontal Frequency
30- 83kHz
Page
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Summary of Contents for Envision H976WDL
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Page 1: Table Of Contents
18" LCD Monitor Envision H976WDL Service Service Service Horizontal Frequency 30- 83kHz Table of Contents Description Page Description Page Table Of Contents…………………..…………………..…...1 6.Schematic…………..….........18 Revision List.…...........……..2 6.1.Main Board..…….…...........18 Important Safety Notice.….…......……..3 6.2.Power Board..……….........22 1.Monitor Specification......………....4 6.3.Key Board…....……........24 2.LCD Monitor Description……….……………………..5 7.PCB Layout..………..........25 3.Operation Instruction.…………....……...6... -
Page 2: Revision List
Revision List Version Release Date Revision History TPV Model Name May.21.2012 Initial release T8B2HG2TAJE1HN... -
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 H976WDL Driving system TFT Color LCD Viewable Image Size 47 cm diagoanl Pixel pitch 0.3mm(H) x 0.3mm(V) LCD Panel Video R, G, B Analog lnterface Separate Sync. H/V TTL Display Color 16.7M Colors Dot Clock... -
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: General Instructions
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. DVI 3. D-SUB 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. -
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: Factory Preset Display Modes
4.2 Factory Preset Display Modes Standard Resolution H. Frequency(kHz) V. Frequency(Hz) 640×480 @60Hz 31.469 59.94 640×480 @67Hz 66.667 640×480 @72Hz 37.861 72.809 640×480 @75Hz 37.5 Dos-mode 720×400 @70Hz 31.469 70.087 800×600 @56Hz 35.156 56.25 800×600 @60Hz 37.879 60.317 SVGA 800×600 @72Hz 48.077 72.188 800×600 @75Hz... -
Page 14: Panel Specification
4.3 Panel Specification 4.3.1 General Features M185BGE-L22 is a 18.5” TFT Liquid Crystal Display module with WLED Backlight unit and 30 pins 1ch-LVDS interface. This module supports 1366 x 768 HD mode and can display up to 16.7M colors. The converter module for Backlight is not built in.. - Page 15 4.3.4 Backlight Unit Value Parameter Symbol Unit Typ. Max. Light Bar Input Voltage 29.3 35.2 Light Bar Input Current Power Consumption LED Lif 30000 Time IFP LED Peak forward current 4.3.5 Optical Characteristics Item Symbol Condition Min. Typ. Max. Unit 0.641 0.338 0.315...
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Page 16: Block Diagram
5. Block Diagram 5.1 Main Board Key Control LCD Interface interface (CN410) (CN408) Scalar IC HX6822-A Crystal EEPROM (Include MCU, ADC, OSD) 12MHz MX25L2026DM1I-12G (U401) (X401) (U402) DDC2-SDA DDC2-SCL D-HS D-VS EEROM EEROM M24C02 M24C02 (U101) (U104) DDC1-SCL DDC1-SDA D-SUB Connector Connector (CN101) -
Page 17: Power Board
5.2 Power Board AC input 14.5V Transformer Bridge Rectifier EMI filter Rectifier (T901) diodes and Filter Start Resistor (R911) Feedback Power Switch PW Control Circuit (Q901) LD7576AGR (U901) Photo coupler (U902) 14.5V L801 D801 (CN804) Q801 PWM Control OZ9998BGN ON/OFF (U801) -
Page 18: Schematic
6. Schematic 6.1 Main Board 715G5306M01000004L 10R 1/16W 5% VGA_B+ R101 R103 C102 DSUB_B+ 0R05 1/10W 47N 16V ESD_VGA D_HS R114 0R05 1/10W R117 470R 1/16W 5% C104 R102 C101 DSUB_H D_VS R118 470R 1/16W 5% NC/5PF 50V 5PF 50V DSUB_V 75 OHM +-5% 1/16W 10R 1/16W 5%... - Page 19 VCC3IO VDDD_AD VCCK VCC3.3 VCC3IO VCC3.3 AVDD3V VDDP_AD AVDD3V_LV VCCP FB401 FB402 AVDD3V DVCC 3,4,5 VCC3.3 300OHM 300OHM C406 C407 C408 C409 C410 VDDP_AD VCC3.3 FB403 VCC3.3 FB405 AVDD3V_LV 300OHM Mute GPIO26 100R 1/16W 5% R450 C709 C411 300OHM WP_DDC GPIO27 PB[0..9] C412...
- Page 20 PA[0..9] PA[0..9] CN411 CN410 LVB3P LVB3N LVB0N RXO0- LVBCKP LVB0P RXO0+ LVBCKN LVB0N RXO0- RXO0+ LVB0P LVB1N RXO1- LVB2P LVB1N RXO1- RXO1+ LVB1P LVB1P RXO1+ LVB2N LVB2N RXO2- RXO2+ LVB2P LVB2N RXO2- LVB1P LVBCKN RXOC- RXOC+ LVBCKP LVB2P RXO2+ LVB1N LVB3N RXO3- RXO3+...
- Page 21 VCC3.3 CN701 R703 C701 C703 100N 16V 10K 1/16W 5% R704 100uF16V BKLT-EN 10K 1/16W 5% BKLT-VBRI BKLT-EN C702 Volume# NC/100N 16V R705 Mute R701 on_BACKLIGHT 3 22K 1/16W 5% Volume# NC/100R 1/16W 5% Q701 R702 LMBT3904LT1G Mute CONN NC/470R 1/16W 5% R708 VCC3.3 NC/10K 1/16W 5%...
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Page 22: Power Board
6.2 Power Board 715G4497P03000001M R929 100 OHM 1/4W FB803 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 BEAD R904 ZD901 250R MTZJ T-72 20B KBP306G-05 D901 C918 680UF 25V R905 D902 470OHM +-5% 1/8W... - Page 23 D801A SR3100 FB802 D801 L801 CN803 +14.5V C801 47UH BEAD Q801 R804 330UF25V C814 NC/SK310B 100N 50V 10 OHM 1/8W APM8005KCTRG C810 0.47UF 50V R801 R815 R819 R820 R821 R822 NC/CONN C809 1MOHM +-1% 1/8W NC/0 ohm NC/0 ohm NC/0 ohm ON/OFF R814 4.7UF 100V...
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Page 24: 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 Wire Harness RLZ5.6B NC/0.1uF 50V SGND SW001 SW002... -
Page 25: Pcb Layout
7. PCB Layout 7.1 Main Board 715G5306M01000004L... -
Page 28: Power Board
7.2 Power Board 715G4497P03000001M... -
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) The end Reset in factory mode 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 KEY BOARD LCD TPM185B1-BGEL02 C1A FQ TPV LVDS CABLE 30P-30P(2004) 140MM HARNESS 9P(SCN)-9P(2008) 100MM MAIN BOARD-CBPCBHGE1Q1 MAINFRAME SGCC 0.6 mm PLATE HINGE REAR_COVER HINGE COVER_STAND STAND BASE FOOT PAD Part No. Description INSULATING SHEET 0D1G1030 6120 SCREW(MB/MAIN_FRAME) POWER BOARD AM1G1740 10225 CR3 SCREW(COVER_STAND/HINGE) CLIP...
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Page 42: Bom List
BASE Q34G7474AEDA4B0100 BEZEL Q34G7475 GMA9K0130 REAR_COVER Q40G000267382B warranty card for taiwan Q40G000367340B POP LABEL FOR G2263wL Q44G8A7767301A00JM ARTWORK CARTON H976WDL WW Q45G8801607 14 P.E. BAGx170x120x0.04 Q45G9901609277 P.E. BAGx380x600x0.3 E05201 Q52G1001209 A JY AL FOIL E05201 Q52G1001209 A ZA AL FOIL... - Page 43 AL FOIL E05203 Q52G1001211 B ZA AL FOIL Q52G1501526 B TAPE Q45G2010M0201A P.E. BAG (INSTR. BOOK) Q70G19C167318A H976WDL CD MANUAL 040G 58162435A PN LABEL FOR Manual PE Bag Q40G0001673 2A CARTON LABEL Q40G018N67305B RATING LABEL TW CBPCBHGE1Q1 CONVERSION BOARD H40G 45762429A...
- Page 44 R423 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN R432 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN R418 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN R417 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN R108 061G0402100 JI TEST ONLY RST 0402 10R 5% 1/16W TA-I R113 061G0402100 JI TEST ONLY RST 0402 10R 5% 1/16W TA-I...
- Page 45 R124 061G0402102 JT RST CHIP 1K 1/16W 5% TZAI YUAN R145 061G0402103 JI TEST ONLY RST 0402 10K 5% 1/16W TA-I R413 061G0402103 JI TEST ONLY RST 0402 10K 5% 1/16W TA-I R715 061G0402103 JI TEST ONLY RST 0402 10K 5% 1/16W TA-I R704 061G0402103 JI TEST ONLY RST 0402 10K 5% 1/16W TA-I...
- Page 46 R436 061G0402392 JT RST CHIP R 3K9 +/-5% 1/16W TZAI YUAN R435 061G0402392 JT RST CHIP R 3K9 +/-5% 1/16W TZAI YUAN R434 061G0402392 JT RST CHIP R 3K9 +/-5% 1/16W TZAI YUAN R119 061G0402470 JI RST 0402 47R 5% 1/16W R120 061G0402470 JI RST 0402 47R 5% 1/16W...
- Page 47 R465 061G1206301 JI RST 300 OHM 5% 1/4W TA-I R466 061G1206301 JI RST 300 OHM 5% 1/4W TA-I R466 061G1206301 JT RST CHIPR 300 OHM +-5% 1/4W TZAI YUAN R465 061G1206301 JT RST CHIPR 300 OHM +-5% 1/4W TZAI YUAN C107 065G040210232K CAP CHIP 0402 1N 50V X7R +/-10%...
- Page 48 C411 065G0402105A5K CAP 0402 1UF 10% 10V X5R C413 065G0402105A5K CAP 0402 1UF 10% 10V X5R C114 065G040222031J CAP CHIP 0402 22P 50V NPO +/-5% C115 065G040222031J CAP CHIP 0402 22P 50V NPO +/-5% C114 065G040222031J CAP CHIP 0402 22P 50V NP0 +/-5% C115 065G040222031J CAP CHIP 0402 22P 50V NP0 +/-5%...
- Page 49 FB401 071G 59G301 M CHIP BEAD 0603 300R 25% 200mA FB102 071G 59G301 M CHIP BEAD 0603 300R 25% 200mA FB101 071G 59G301 M CHIP BEAD 0603 300R 25% 200mA CHIP BEAD 300OHM 200mA FB408 071G 59G301 TA FCM1608KF-301T02 CHIP BEAD 300OHM 200mA FB407 071G 59G301 TA FCM1608KF-301T02...
- Page 50 SW005 077G603S AI CJ TACT SWITCH AI 2PIN SEALED SW005 077G603S AI HJ TACT SWITCH AI 2PIN SEALED SW001 077G603S AI HJ TACT SWITCH AI 2PIN SEALED SW003 077G603S AI HJ TACT SWITCH AI 2PIN SEALED SW004 077G603S AI HJ TACT SWITCH AI 2PIN SEALED SW002 077G603S AI HJ...
- Page 51 709G4497 QM001 CONSUMPTIVE ASS'Y 055G 23524 WELDING FLUX WITHOUT PB Q55G 100625 TIN STICK_LOW ARGENTUM H40G 45762429A LABEL 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...
- Page 52 R816 061G08053901FI RST 0805 3.9K 1% 1/8W R920 061G08054701FF RST CHIPR 4.7KOHM +-1% 1/8W FENGHUA R920 061G08054701FT RST CHIP 4K7 1/8W 1% R905 061G0805471 JF RST CHIPR 470 OHM +-5% 1/8W FENGHUA R905 061G0805471 JT RST CHIPR 470OHM +-5% 1/8W TZAI YUAN R925 061G08059311FF RST CHIPR 9.31KOHM +-1% 1/8W FENGHUA...
- Page 53 C914 065G080510232K CAP CHIP 0805 1N 50V X7R +/-10% C906 065G080510232K CAP CHIP 0805 1N 50V X7R +/-10% C815 065G080510232K CAP CHIP 0805 1N 50V X7R +/-10% C915 065G080510332K CAP 0805 10NF K 50V X7R C915 065G080510332K CAP CHIP 0805 10N 50V X7R +/-10% C926 065G080510432K CAP CHIP 0805 0.1UF K 50V X7R...
- Page 54 J921 095G 90 23 JUMP WIRE - - J910 095G 90 23 JUMP WIRE - - J909 095G 90 23 JUMP WIRE - - J908 095G 90 23 JUMP WIRE - - J907 095G 90 23 JUMP WIRE - - J906 095G 90 23 JUMP WIRE - -...
- Page 55 C918 067G215D3314KT EC 330UF 20% 25V 10*12 ED C918 367G215X3314LT EC 330UF 20% 25V 10*12.5 FB803 095G 90 23 JUMP WIRE - - R919 061G08051500FF RST CHIPR 150OHM +-1% 1/8W FENGHUA R916 061G08051002FF RST CHIPR 10KOHM +-1% 1/8W FENGHUA R916 061G08051002FT RST CHIP 10K 1/8W 1% R827...