Table of Contents
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21.5" 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 Button......................................................6
3.3.OSD Menu............................................................7
4.Input/Output Specification.......................................11
4.1.Input Signal Connector.........................................11
4.2.Factory Preset Display Modes...............................12
4.3.Panel Specification.............................................13
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.Adapter Board...............................................22
6.3.Converter Board............................................23
6.4.Key Board......................................................25
7.PCB Layout.....................................................26
7.1.Main Board....................................................26
7.2.Adapter Board............................................29
7.3.Converter Board........................................32
7.4.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................................41
11.BOM List...................................................43
SAFETY NOTICE
1
Envision P2271WL
Horizontal Frequency
31-80 KHz
Page
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Summary of Contents for Envision P2271WL
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Page 1: Table Of Contents
21.5" LCD Monitor Envision P2271WL Service Service Service Horizontal Frequency 31-80 KHz Table of Contents Description Page Description Page 6.Schematic……………........18 Table of Contents..……......……..1 6.1.Main Board………...........18 Revision List.…........…………..2 6.2.Adapter Board...……........22 Important Safety Notice.……......……..3 6.3.Converter Board...……........23 1.Monitor Specification......………..4 6.4.Key Board...……..........25 2.LCD Monitor Description……………………………..5 7.PCB Layout..…………........26... -
Page 2: Revision List
Revision List Version Release Date Revision History TPV Model Name Apr.07.2011 Initial release TI92A82BW6E1HN Add new power board: 715G4219P02000004S TIAGA82MW6E1HN Update: Dec.12,2011 Block Diagram Schematic TIAGA82BW6E1HN PCB Layout BOM List... -
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 P2271wL Driving system TFT Color LCD Viewable Image Size 54.69cm diagonal Pixel pitch 0.248mm(H) x 0.248mm(V) 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, an Adapter board, a converter 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
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 (See Figure). By changing these settings, the picture can be adjusted to your personal preferences. * The power cord should be connected. -
Page 7: Osd Menu
3.3 OSD Menu • 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. Once the desired function is highlighted, press MENU-button to activate it. - Page 8 Function Control Illustration...
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Page 11: Input/Output Specification
4. Input/Output Specification 4.1 Input Signal Connector Analog connector 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 connector Pin No. Signal Name Pin No. -
Page 12: Factory Preset Display Modes
4.2 Factory Preset Display Modes... -
Page 13: Panel Specification
4.3 Panel Specification 4.3.1 General Features The M215H1-L01 model is a 21.5 inch wide TFT-LCD module with LED Backlight Unit and a 30-pin 2ch-LVDS interface. This module supports 1920 x 1080 Full HD (16:9 wide screen) mode and displays up to 16.7 millions colors. - Page 14 4.3.3 Electrical Characteristics (1) TFT LCD Ta = 25 ± 2 ºC (2) Backlight...
- Page 15 4.3.4 Optical Characteristics...
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Page 16: Block Diagram
5. Block Diagram 5.1 Main Board 14.31818MHZ Panel Interface (X401) (CN301) FLASH ROM Scalar IC TSUMU58NWHL-LF-1 EN25F20 Key Control Interface (Include ADC, OSD, MCU) (U402) (CN402) (U401) D-Sub Connector DVI Connector (CN101) (CN102) -
Page 17: Power Board
5.2 Power Board Adapter board AC input Bridge 14.5V Rectifier Transformer EMI filter Rectifier diodes and Filter Start Resistor (R920,R921,R922) Feedback PWM Control Over Voltage Circuit (IC901) Protect Photo coupler (IC902) Converter board 715G3649P01000004L Boost Circuit panel (CN802& CN803) OVP Circuit Setup-up Controller OZ9954SN Current Feedback... -
Page 18: Schematic
6. Schematic 6.1 Main Board 715G3329 1 2 FB102 R105 10OHM1/16W VGA_B+ C102 DSUB_B+ BEAD 0.047uF H_Sy nc R102 0R05 1/10W 5% R103 1K 1/16W 5% R108 C105 DSUB_H V_Sy nc R104 1K 1/16W 5% 5pF/50V DSUB_V 75R 1/16W 5% R109 47 OHM 1/16W R106 R107... - Page 19 CN301 PA[0..9] PB[0..9] PA[0..9] PB[0..9] LVB3P LVB0M RXO0- LVA3P LVB3M CN302 LVB0P RXO0+ LVA3M LVBCKP LVB1M RXO1- LVACKP LVBCKM LVB1P RXO1+ LVACKM LVB2P LVB2M RXO2- LVA2P LVB2M LVB2P RXO2+ LVA2M LVB1P LVB0M RXO0- RXO0+ LVB0P LVA1P LVB1M LVB1M RXO1- RXO1+ LVB1P LVBCKM RXOC-...
- Page 20 CN702 CMVCC1 U702 NC/AP1117D33L-13 CN701 CMVCC1 CMVCC1 BKLT-VBRI BKLT-VBRI R709 BKLT-EN R710 NC PANEL_ID# PANEL_ID# Volume# CMVCC1 VCC3.3 Volume# Mute1 U701 Mute VIN VOUT CONN C701 lock type C712 C707 0.1uF/16V C708 C709 0.1uF/16V 0.1uF/16V 100UF25V DGND 2,3,5 CMVCC1 VCC3.3 R702 10K 1/16W 5% R703...
- Page 21 VCC3.3 FB402 VPLL VCC3.3 FB401 AVDD 300OHM 300OHM C408 0.1uF/16V C407 0.1uF/16V VDVI VMPLL VPLL AVDD VDDP VDDC VCTRL VCC3.3 FB410 VDVI CMVCC1 VCC3.3 FB404 VMPLL LVA3P R451 DSUB_R+ RIN0P LVA3M 300OHM DSUB_R- RIN0M LVACKP R402 R452 VCC3.3 300OHM DSUB_G+ GIN0P LVACKM C414...
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Page 22: Adapter Board
6.2 Adapter Board 715G3189P02LED001S R904 30 OHM 1/4W L903 R927 R905 30 OHM 1/4W 0R05 4A 1/4W +14.5V C900 C910 C919 ZD901 1000PF/250VAC 2N2 500V 2N2 500V R906 30 OHM 1/4W R918 250OHM2W C912 MTZJ T-72 22B 1000uF 25V T901 D903 31DQ10FC POWER X'FMR R916... -
Page 23: Converter Board
6.3 Converter Board 715G3649P01000004L CN802 F801 0R05 4A 1/4W L801 CN801 +12V ZD801 22uH B360B C801 C802 R803 Q801 C812 C813 C814 R819 10R 1/8W 5% RK7002FD5T116 100N 50V 100uF 50V 100N 25V 100uF 50V CONN 160K 1/10W CN803 Q802 D801 R820 R810... - Page 24 Vout CONN R822 1M 1/8W 5% OVP1 R823 C808 0R01 1/10W 100pF 50V R824 33KOHM 1/10W P2271WL T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL Size G4219-P01-000-X-3-101213 LNPCAB511GYZ1 TPV MODEL 絬 隔 瓜 絪 腹...
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Page 25: Key Board
6.4 Key Board 715G3706K02000004L C001 1000pF 50V C002 C003 Buttons 10uF 6.3V 100N 16V Button_1 R001 560R 1/10W 5% Menu Button_2 R002 560R 1/10W 5% Button_3 R003 560R 1/10W 5% Button_4 R004 560R 1/10W 5% Auto LED_Blue GP0[0] GP0[2] LED_Amber Button_5 R005 560R 1/10W 5% Power... -
Page 26: Pcb Layout
7. PCB Layout 7.1 Main Board 715G3329 1 2... -
Page 29: Adapter Board
7.2 Adapter Board 715G3189P02LED001S... -
Page 32: Converter Board
7.3Converter Board 715G3649P01000004L... -
Page 33: Key Board
715G4219P02000004S 7.4 Key Board 715G3706K02000004L... -
Page 34: 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 35: Trouble Shooting
8.2 Trouble Shooting 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 indicate is OK? Replace the power board and check connections Replace main board and check connections Replace key board and check connections... - Page 36 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 cable or panel Replace the key board...
- Page 37 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 38 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 39: 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 simply use “SC” key and “NEXT” Key to modify xyY value and use “ID”... - Page 40 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 ±20, y = 297 ±20 4.
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Page 41: Monitor Exploded View
10. Monitor Exploded View... - Page 42 Description BEZEL L215WA-TS4-TSS1 KEY GUIDE LENS FOR BEZEL KEY BOARD PANEL ADAPTER BOARD MAIN BOARD MAIN_FRAME REAR COVER 215W HINGE ASS¡¯Y COVER STAND Part No. Description STAND 0G1G1030 6120 SCREW(FOR PB &MB/MAIN_FRAME) SCREW(FOR CONVERTER BOARD BASE TSS1 0M1G1730 6120 /MAIN_FRAME) SCREW(FOR COVER STAND/HINGE CONVERTER BOARD AM1G1740 10225 CR3...
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Page 43: Bom List
AM1G1740 10225 CR3 SCREW Q16G0001 20 1 EVA WASHER Q16G0001 20 1 EVA WASHER Q40G000362413A WIN7 AND EPA LABEL Q40G0003673 4A POP LABEL FOR P2271WL Q41G78S1673 1C RUSSIAN WARRANTY CARD Q41G78SV673 4B Q44GB016101 CARTON Q44GB016201 T SERIAL 21.5 Q44GBF16673 3D... - Page 44 Q70G22C1673 3A P2271WL CD MANUAL 040G 58162435A P/N LABEL FOR MANUAL PE BAG Q40G 22N67330A RATING LABEL Q40G0001673 2A CARTON LABEL 040G 45762412B CBPC LABEL CN402 033G3802 7B Y WAFER CN402 033G3802 7B Y CONNECTOR 7P 2.0 2nd Source CN701 033G3802 9B Y CONN 2.0 9P...
- Page 45 FB404 071G 56V301 B CHIP BEAD 0805 300R 25% 700MA FB401 071G 56V301 B CHIP BEAD 0805 300R 25% 700MA FB402 071G 56V301 B CHIP BEAD 0805 300R 25% 700MA FB105 071G 59G301 CHIP BEAD CHIP BEAD 300 OHM 0603 FB104 071G 59G301 CHIP BEAD CHIP BEAD 300 OHM 0603...
- Page 46 R126 061G0402100 JT RST CHIP 10R 1/16W 5% TZAI YUAN R127 061G0402100 JT RST CHIP 10R 1/16W 5% TZAI YUAN R128 061G0402100 JT RST CHIP 10R 1/16W 5% TZAI YUAN R129 061G0402100 JT RST CHIP 10R 1/16W 5% TZAI YUAN R130 061G0402100 JT RST CHIP 10R 1/16W 5% TZAI YUAN...
- Page 47 R305 061G0402103 JI TEST ONLY RST 0402 10K 5% 1/16W TA-I R135 061G0402103 JI TEST ONLY RST 0402 10K 5% 1/16W TA-I R133 061G0402103 JI TEST ONLY RST 0402 10K 5% 1/16W TA-I R120 061G0402103 JI TEST ONLY RST 0402 10K 5% 1/16W TA-I R120 061G0402103 JT RST CHIP 10K 1/16W 5% TZAI YUAN...
- Page 48 R303 061G0402472 JY RST CHIPR 4.7KOHM +-5% 1/16W YAGEO R138 061G0402472 JY RST CHIPR 4.7KOHM +-5% 1/16W YAGEO R137 061G0402472 JY RST CHIPR 4.7KOHM +-5% 1/16W YAGEO R306 061G0402563 JI RST 0402 56K 5% 1/16W R306 061G0402563 JT RST CHIPR 56KOHM 1/16W TZAI YUAN R139 061G0402682 JI RST CHIP 6.8K 5% 1/16W TA-I...
- Page 49 C124 065G040210412K CAP CHIP 0402 100NF K 16V X7R C301 065G040210412K CAP CHIP 0402 100NF K 16V X7R C304 065G040210412K CAP CHIP 0402 100NF K 16V X7R C403 065G040210412K CAP CHIP 0402 100NF K 16V X7R C404 065G040210412K CAP CHIP 0402 100NF K 16V X7R C405 065G040210412K CAP CHIP 0402 100NF K 16V X7R...
- Page 50 Q52G 3102 DOUBLE FACE TAPE CN001 033G8032 6F S HR CONNECTOR Q001 057G 417518 TRA LMBT3904LT1G 200MA/40V SOT-23 LRC Q002 057G 417518 TRA LMBT3904LT1G 200MA/40V SOT-23 LRC R014 061G0603472 JY RST CHIPR 4.7KOHM £«-5£¥ 1/10W YAGEO R015 061G0603472 JY RST CHIPR 4.7KOHM £«-5£¥ 1/10W YAGEO R005 061G0603561 JY RST CHIP 560R 1/10W 5% YAGEO...
- Page 51 Q804 057G 41717B T TRA PZT2907A PHILIPS R810 061G0603000 JY RST CHIPR MAX0R05 1/10W YAGEO R809 061G0603103 JY RST CHIPR 10KOHM £«-5£¥ 1/10W YAGEO R808 061G0603103 JY RST CHIPR 10KOHM £«-5£¥ 1/10W YAGEO R807 061G0603103 JY RST CHIPR 10KOHM £«-5£¥ 1/10W YAGEO R806 061G0603103 JY RST CHIPR 10KOHM £«-5£¥...
- Page 52 715G3649P01000004L CONVERTER PCB 90X40X1.6MM FR-4 D/S 1OZ ADPC91503YC3 ADAPTER BOARD G3189-PO1-LED-X-6-091112 040G 45762412B CBPC LABEL GND1 009G6005 1 GROUND TERMINAL GND2 009G6005 1 GROUND TERMINAL GND3 009G6005 1 GROUND TERMINAL CN903 033G380210B Y CONNECTOR 10P 2.0 CN903 033G380210B Y WAFER 2nd Source IC902 056G 139 3A...
- Page 53 CN902 095G 825 9X904 HARNESS 9P(SCN) - 9P 120MM LCDXXTF0358 R623 061G0603000 JF RST CHIPR MAX 0R05 1/10W FENGHUA R628 061G0603000 JF RST CHIPR MAX 0R05 1/10W FENGHUA R917 061G06031001FT RST CHIP 1K 1/10W 1% R917 061G06031001FY RST CHIPR 1KOHM +-1% 1/10W YAGEO R913 061G06031002FT RST CHIP 10K 1/10W 1%...
- Page 54 R900 061G1206624 JY RST CHIPR 620 KOHM +-5% 1/4W YAGEO R902 061G1206624 JY RST CHIPR 620 KOHM +-5% 1/4W YAGEO C916 065G060310312K CAP CHIP 0603 10NF K 16V X7R C905 065G080510432K CAP CHIP 0805 0.1UF K 50V X7R C905 065G080510432K CAP CHIP 0805 0.1UF K 50V X7R C915 065G080510432K...
- Page 55 J904 095G 90 23 JUMPER WIRE J903 095G 90 23 JUMPER WIRE J902 095G 90 23 JUMPER WIRE J900 095G 90 23 JUMPER WIRE J616 095G 90 23 JUMPER WIRE J615 095G 90 23 JUMPER WIRE J609 095G 90 23 JUMPER WIRE J608 095G 90 23...
- Page 56 TIAGA82MW6E1HN Converter board LNPCAB511GYZ1 Location Part No. Description Remark C802 067G 4151017LV EC 100UF 20% 50V RZY 8*11.5 C811 067G 415330 9L EC 33UF 20% 100V RZW 8*11.5 H40G 45762429A LABEL CN801 033G803210F HR CONNECTOR 10P 1.25 IC801 056G 379185 LED DRIVER TA9690GN-A1-0-TR SOP-24 Q801 057G 763 92...
- Page 57 R827 061G0805109 JY RST CHIP 1R 1/8W 5% YAGEO R828 061G0805109 JY RST CHIP 1R 1/8W 5% YAGEO R829 061G0805109 JY RST CHIP 1R 1/8W 5% YAGEO R825 061G1206000 JF RST CHIPR MAX0R05 1/4W FENGHUA R825 061G1206000 JY RST CHIPR MAX0R05 1/4W YAGEO R801 061G1206308 JF RST CHIPR 0.3 OHM +-5% 1/4W FENGHUA...