ViewSonic VE150m Service Manual
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ViewSonic VE150m Service Manual

ViewSonic VE150m Service Manual

15” color tft lcd display
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Service Manual

ViewSonic VE150m/mb
Model No.VLCDS22574-1/-1b
15" Color TFT LCD Display
(VE150m/VE150mb-1_SM_399 - Rev. 1a – Dec 2002)
ViewSonic " 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

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  • Page 1: Service Manual

    Service Manual ViewSonic VE150m/mb Model No.VLCDS22574-1/-1b 15” Color TFT LCD Display (VE150m/VE150mb-1_SM_399 - Rev. 1a – Dec 2002) ViewSonic “ 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583...

  • Page 2: Revision History

    Further, ViewSonic reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation of ViewSonic to notify any person of such revision or changes.

  • Page 3: Table Of Contents

    CHAPTER 6 THEORY OF OPERATION ......3 System Block Diagram..............34 System Circuitry Description ............35 CHAPTER 7 MECHANICAL ASSEMBLY......3 CHAPTER 8 RECOMMENDED SPARE PARTS LIST ..40 CHAPTER 9 COMPLETE PARTS LIST ......42 ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...
  • Page 4 10.1 Micro Controller and LCD power control ......... 54 10.2 VGA input..................55 10.3 Output Connector................56 10.4 DC-DC .................... 57 10.5 Audio....................58 10.6 CHAPTER 11 PCB LAYOUT ..........59 ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...

  • Page 5: Warning

    SJT type cord sets may be used. The cord set must be selected according to the current rating for your unit. Please consult the table below for the selection criteria for power cords used in the United States and Canada. ViewSonic Corporation Confidential - Do Not Copy...
  • Page 6 GREEN or GREEN-AND-YELLOW. The wire which is colored BLUE must be connected to the terminal in the plug which is marked with the letter N or colored BLACK. The wire which is colored ViewSonic Corporation Confidential - Do Not Copy...

  • Page 7: Chapter 1 Preface

    Do not place heavy objects on the LCD Display, video cable, or power cord. If smoke, abnormal noise, or strange odor is present, immediately switch the LCD Display off and call your dealer or ViewSonic. It is dangerous to continue using the LCD Display. Chapter 1 PREFACE The purpose of this manual provides integral information you need to maintain the LCD Monitor.

  • Page 8: Chapter 6 Theory Of Operation 3

    ENGINEERING SPECIFICATIONS This CHAPTER provides the engineering specification for the designated Display. Since we only provide a reference engineering specification in this service manual, Please refer to ViewSonic Engineering Product for detailed product specification. Specification FRONT PANEL CONTROL This CHAPTER provides User Control Panel functions and descriptions.

  • Page 9: Circuit Diagram

    This chapter aims to serve as a guide in procuring replacement parts for this product. CIRCUIT DIAGRAM This CHAPTER provides functional circuits diagram of the LCD Display. PCB LAYOUT This CHAPTER provides PCB Layout of the LCD Display. ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...

  • Page 10: Chapter 2 Specifications

    (-M/-E/-P) unless otherwise detection). specified. 6. Audio cable, 1.8 m with lime green (pantone color# 577C) connector stereo mini 7. Quick Start guide / ViewSonic System wizard CD-ROM. (No E-Color). . Warranty sticker (For J model and G model) . Warranty card (For J model and G model) Carton sticker.

  • Page 11: General Requirement

    Product Assembly 1. VE150m / VE150mb unit 2. Attached base and neck 2.2 GENERAL REQUIREMENTS 2.2.1 General Specifications Test Resolution & Frequency 1024 x 768 @ 60Hz Test Image Size Full Size Contrast and Brightness Controls Factory Default – Contrast = 70% (center), Brightness = 100% 2.3 SIGNAL INTERFACE...

  • Page 12: Power

    2.4.1 Power Supply External Power Supply Primary: CHI, CH-1234X (12V - 40W) 2nd Sources : HJC, HASU05F (12V - 48W). Input Voltage Range 90 to 264 VAC Input Frequency Range 47.5 to 63 Hertz ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...
  • Page 13 2.4.2 Power Interface AC input to DC Power Supply 3 Prong Socket Assembly, DC Power Connector 2.5mm DIN DC Power Connector w/ 1.5m VE150m (beige), VE150mb (black). AC Power Cable Length 1.8 m (6 feet) Power Cable Color VE150m (beige), VE150mb (black).

  • Page 14: Front Panel Controls And Indicators

    Length = 1.8m. Connects to DC Adapter. VE150m (beige), VE150mb (black). European Type Power Cable Schuko CEE7-7. Length = 1.8m, Connects to DC Adapter. VE150m (beige), VE150mb (black). 2.4.3 Power Saving Operation Method VESA DPMS Signaling Power Consumption ON Mode < 30 W (max) ACTIVE OFF <...

  • Page 15: Electrical Requirements

    There shall not be a separate save. 2.6 ELECTRICAL REQUIREMENTS 2.6.1 Horizontal / Vertical Frequency Horizontal Frequency 30 – 60kHz Vertical Refresh Rate 50 – 75 Hz. ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...

  • Page 16: Audio

    3.5 mm stereo jack Line input signal 1 Vrms Line input impedance 10kOhm Maximum Power Output (Electric) 1.5W @ < 5% distortion Signal to Noise Ratio 72dB Frequency Response 200 Hz – 20 KHz ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...

  • Page 17: Lcd Panel

    Using White Window Icon Image. 24Hr full screen checkerboard pattern, then switch to full white screen. Mura Defect Not visible with visible inspection Please see Panel Acceptance Specification. Photo Etch Lines Not visible with visible inspection ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...

  • Page 18: Image Perfromance

    Power Supply, and Grounding Artifacts No visible artifacts in any specified video mode within the horizontal or vertical frequency range of the monitor Temperature Drift Image shall not drift or lose fine-tune adjustment. ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...

  • Page 19: Chapter 3 Front Panel Controls

    Chapter 3 FRONT PANEL CONTROLS 3.1 Adjusting the Screen Image Use the buttons on the front control panel to adjust the OnView® controls which display on the screen. ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...

  • Page 20: Do The Following To Adjust The Screen Image

    The following tips may help you optimize your display: Adjust your computer's graphic card so that it outputs a video signal 1024 x 768 @ 60Hz to the VE150m. (Look for instructions on "changing the refresh rate" in your graphic card's user guide.)

  • Page 21: Main Menu Controls

    2 To adjust selected color, press or . To deactivate Video Enhanced Mode, press the up and down arrows simultaneously. When you are finished making all color adjustments, press button [1] twice. ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...
  • Page 22 [2]. Horizontal moves the screen image to the left or to the right. Vertical moves the screen image up and down. H. Size (Horizontal Size) adjusts the width of the screen image. (Note: Vertical size is automatic with your LCD Display.) ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...
  • Page 23 OSD Timeout sets the length of time an on-screen display screen is displayed. For example, with a “15 second” setting, if a control is not pushed within 15 seconds, the display screen disappears. ViewSonic Corporation Confidential - Do Not Copy...
  • Page 24 Memory Recall returns adjustments to the original factory settings if the display is operating in factory Preset Timing Mode listed in this user guide. Exception: This control does not affect changes made with the User Color control. ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...

  • Page 25: Chapter 4 Circuit Description

    Chapter 4 CIRCUIT DESCRIPTION 4.1 Main Board 4.1.1 Position CON7 CON5 CON4 CON2 CON1 CON8 CON3 CON12 CON9 (Not applicable) NOTE: N/A INDICATES PIN-HEADER/CONNECTOR NOT IN USE. ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...
  • Page 26 4.1.3 CON 5 Inverter Connector Pin # Signal Name Function +12 V power supply +12 V power supply GROUND GROUND INV-PWR INVERTER POWER GROUND BRINS Dimming (Brightness) Control PWM0 No Connect PENBKL On/Off control GROUND ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...
  • Page 27 GROUND GROUND RED EVEN DATA SIGNAL 0 RED EVEN DATA SIGNAL 1 GREEN EVEN DATA SIGNAL 0 GREEN EVEN DATA SIGNAL 1 BLUE EVEN DATA SIGNAL 0 BLUE EVEN DATA SIGNAL 1 ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...
  • Page 28 BLUE ODD DATA SIGNAL 5 BLUE ODD DATA SIGNAL 6 BLUE ODD DATA SIGNAL 7 GROUND RED ODD DATA SIGNAL 0 RED ODD DATA SIGNAL 1 GREEN ODD DATA SIGNAL 0 GREEN ODD DATA SIGNAL 1 ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...
  • Page 29 Ground RED VIDEO 4.1.7 CON12: SPEAKER Connector Pin # Signal Name Function RIGHT-P RIGHT POSITIVE (VOLUME INCREASE_ RIGHT-M RIGHT MINUS (VOLUME DECREASE) LEFT-P LEFT POSITIVE (VOLUME INCREASE_ LEFT-M LEFT MINUS (VOLUME DECREASE) ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...

  • Page 30: Chapter 5 Troubleshooting

    Chapter 5 TROUBLESHOOTING 5.1 Equipment ViewSonic VE150m/VE150mb/VA500 LCD Monitor Personal Computer Screw Driver 5.2 Main Procedure Start Connect all of devices to theLCD monitor Power On A. Power Circuit Is indicator LED Troubleshooting light? ViewSonic Corporation Confidential - Do Not Copy...
  • Page 31 B. Backlight Is backlight on? Troubleshooting C. Performance Display Performance Troubleshooting O.K.? D. Function Function Adjustment Troubleshooting O.K.? E. Audio Audio Function O.K.? Troubleshooting No Trouble Found ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...
  • Page 32 5.2.1 . Power Circuit Troubleshooting Start Change AC/ DC Adapter Retry Power Change Main Board & Retry Change Power Board & Retry Change Power Board No Trouble Found ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...
  • Page 33 5.2.2 B. Backlight Troubleshooting Start Change Inverter and Retry Change Main Board& Retry Backlight Change Module No Trouble Found ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...
  • Page 34 Board Screen is Change Change Main Change LCD flickering? Inverter Board Board Module Change LCD LCD Line Defect? Module Change LCD Bad Uniformity? Module Check Change Main Is screen white? Connector Board ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...
  • Page 35 Screen with noise or line Reset & Adjust resolution bar? Change Main Board Make sure relution is set Screen is smaller? at system default Reset O.K.? Change Main Board No Trouble Found ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...
  • Page 36 5.2.4 D. OSD Function Troubleshooting Start Change Switch OSD Control Menu Board and not Functioning? Retry? Change Main Board No Trouble Found ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...
  • Page 37 5.2.5 E. Audio Troubleshooting Start Make sure sound output, Audio cable is OK. Change No Sound Speaker Change Sound is broken? Speaker Volume Change Main Unadjustable? Board No Trouble Found ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...

  • Page 38: Theory Of Operation

    THEORY OF OPERATION 6.1 System Block Diagram LCD Panel : M150X2-T03 Micro Processor MASCOT V SI 8050SD Voltage Regulator ADC (Analog to Digital Converter) Input Pin Power Adapter 12V Header SWITCH BOARD ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...

  • Page 39: System Circuitry Description

    SYNC SIGNAL PROCESSOR. This processor determines the polarity of the horizontal and vertical sync signals, generates a fixed-polarity synchronized clock signal and provides data for use by the microprocessor in selecting circuit control parameters from EEPROM tables. ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...

  • Page 40: Chapter 7 Mechanical Assembly

    VE150M Chapter 7 MECHANICAL ASSEMBLY ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...
  • Page 41 VE150MB ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...

  • Page 42: Viewsonic Corporation

    SR0-50113-0080 SCREW-MM-BND-NI-3*8 M-WR-0828-0674 WIL-VE150-LC31 WIRE-ASS'Y,M/B-LCD,60P-(30P+26P),CMO,MRT V,JHEN VEI,VE150M-M PL-PD-0714-0079 RUB-VE150-1010 RUBBER FOOT,W13*L20*T10mm,VE150M-M B-SB-0221-0504 IVC-150X3-0473 INVERTER,M150X3-T03,CMO 15",7PIN 180°,4LAMP(1L),DAC-12C043,DELTA,VE150M-M B-MB-0201-0727 PMF-151MV-0101 ASS'Y PCB FINAL,M/B (MRT/Mascot V),V10,CMO,FOR VIEWSONIC,VE150M-M M-SCW-0824-0534 SR0-50153-0060 SCREW-MM-BND-ZNC-3*6 M-SCW-0824-0541 SR1-50113-0100 SCREW-TB-BND-NI-3*10 INS-VE150-1060 INSULATION,INVERTER,VE150M-M BRA-VE150-1080 METAL,LCD,BRACKET,FRAME,CMO 15",VE150M-M A-VC-0101-0288 CAB-VE150-VG31 CABLE VGA,PC99,200CM,H89B42B4,15P-14P,W/SR,JHEN VEI,VE150M-M...

  • Page 43: Chapter 8 Recommended Spare Parts List

    LAB-VE150-F08B M-LB-0813-0570 LABEL,LOGO(SMALL),VIEW SONIC,E015-001,VP180M LAB-VP180-N010 M-LCD-0826-0151 PANEL LCD,M150X3-T03,CMO 15",TRADITIONAL PANEL (TN+FILM) LCD-M150X3T-41 B-SB-0221-0325 ASS'Y PCB FINAL, S/B, V20 PSF-VE150-0201 B-MB-0201-0727 ASS'Y PCB FINAL,M/B(MRT/MascotV),V10,CMO,FOR VIEW SONIC,VE150M-M PMF-151MV-0101 PL-PD-0714-0079 RUBBER FOOT,W13*L20*t10mm,VE150M-M RUB-VE150-1010 E-SK-0412-0068 SPEAKER,4.0 OHM,2W,d40*20,R340*L140mm,FG-4 SPK-VE150-1050 M-WR-0828-0674 WIRE-ASS'Y,M/B-LCD,60P-(30P+26P),CMO,MRT V,JHEN VEI,VE150M-M WIL-VE150-LC31 M-WR-0828-0675 WIRE-ASS'Y,M/B-S/B,12P-12P,2.54-2.0mm,CMO15",JHEN VEI,VE150M-M...
  • Page 44 M-LB-0813-0562 BARCODE LABEL,W82*122mm,VE150L-AA BAR-VE150-1202 M-MS-0808-7716 BAG PP,OUTSIDE COVER,W155*L225mm,VE150M-M BAG-16022-0C00 CD-ASS'Y,(CD-USER MANUAL 15 languages-JACKET W/NATURE),CHINA,VIEW A-CD-VE150M SONIC,VE150M-M CDA-VE150-3040 M-MS-0808-7717 MANUAL,QUICK START GUIDE,15 languages,MADE INCHINA,VE150M-M MAU-VE150-A420 A-AU-0120-0039 CABLE AUDIO,PC99 GREEN HEAD,180cm,VE150S-AA/VE150L-AA CAB-VE150-AUD3 A-VC-0101-0288 CABLE VGA,PC99,180cm,H89B42B4,15P-14P,W/SR,JHEN VEI,VE150M-M CAB-VE150-VG31 M-CV-0830-0238 PLASTIC,LCD,VESA COVER,VE150S-AA/VE150L-AA COV-VE150-1050 M-CV-0830-0239...

  • Page 45: Chapter 9 Complete Parts List

    Chapter 9 COMPLETE PARTS LIST ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...

  • Page 46: Viewsonic Corporation

    ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...
  • Page 47 ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...
  • Page 48 ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...
  • Page 49 ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...
  • Page 50 ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...

  • Page 51: Confidential - Do Not Copy

    SYNCMOS INDUCTOR,150uH,0.5*60.5 TS,DIP,TCL5052- IND-0150U-2601 L1 1 PS 151M050,SPORTON INDUCTOR,150uH,0.5*66.5 IND-0150U-2602 TS,DIP,TBC1609-151K ASS'Y PCB PMS-151MV- B-MB-0201-0731 SMT,M/B(MRT/MascotV),V10,FO 1 ST 0101 R VIEW SONIC,VE150M-M BEAD,FBM-10-160808- FB7,FB8,FB9,FB10,FB E-L-0407-1414 BED-102M1-1001 13 PS 102,SMD,0603,MID,KING-CORE 11,FB12,FB13, BEAD,FBM-11-160808- E-L-0407-1415 BED-121L1-1001 FB5 1 PS 121T,SMD,0603,LOW,KING- BEAD,GT4532GA121H,SMD,453 E-L-0407-1410 BED-121M1-6601 FB20,FB82,FB84,FB86...
  • Page 52 IC,REGULATOR,AIC1117- 33CY,SOT223,3PIN,SMD,3.3V,A IC1-AIC1117-21 1 PS NALOG E-IC-0401-2372 IC,LM1117MPX- IC1-117MPX3-21 IC,RESET(HI RESET),MCP810- IC1-P810450-31 1 PS 450,SOT23,3PIN,4.35V,MICROC IC,AMC7622- IC4-62233ST-01 1 PS 33ST,TO263,3PIN,3.3V,AMC IC,SI- 8050SD,TO263,5PIN,5V,SMD,SA IC4-I8050SD-31 1 PS NKEN IC,MIC29150,TO263,3PIN,3.3V,S E-IC-0401-2397 IC4-MIC2915-21 1 PS MD,MICREL ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...
  • Page 53 R79,R93,R125 RES,6.8K,+/-5%,SMD,CHIP,0603 RES-06R8K-1121 R23 1 PS E-R-0405-6651 RES,1M,+/-5%,SMD,CHIP,0603 RES-1000K-1121 R14 1 PS TRANSISTOR,2N3904,NPN,SOT E-Q-0402-1465 TRS-N3904-1101 Q1,Q2,Q3,Q4 4 PS 23,SMD,LITE-ON WIRE-ASS'Y,M/B-INVERTER,7P- .77. M-WR-0828-0676 WIL-EZ15F-IV01 CON7 1 PS 7P,48mm,EZX15F WIRE-ASS'Y,M/B-INVERTER,7P- M-WR-0828-0677 WIL-EZ15F-IV02 7P,48mm,JHEN VEI,EZ15F ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...
  • Page 54 CRYSTAL,12.00 MHz,49/US,+/- E-X-0415-0129 XT1-000012M-11 Y2,Y1 2 PS 30ppm,JEN JAAN CRYSTAL,12.00 MHz,49/US,+/- E-X-0415-0130 XT1-000012M-12 30ppm,32pF,KDS(HARMONY/ ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...
  • Page 55 Name VLCD22574-XYZ ViewSonic P/N Description Parts Number Location QTY UNIT PL-BT-0706-012 Button Tact SW BTN-PT002B1-21 Botton 1 PS Connector Header 12 pin, 2.5 CNN-P012W-3433 cnnECTOR 6 PS LED 2 COLOR LED-02032-2601 8 PS B-SWB-0210-00 PCB, S/B V20 PCB-VE150-SB27 Switch Board...

  • Page 56: Chapter 10 Circuit Diagrams

    CLKOUT BED-121L1-1001 R130 SSON VCC5-4 TL431 10K(NP) 4.7n 4.7n 0.1u 10u / 25V P2027 150p BED-121M1-1002 ViewSonic Corporation 12MHZ Title SCALLER MV Size Document Number VE150m/mb Custom V0.1 Date: Friday, August 09, 2002 Sheet ViewSonic Corporation Confidential - Do Not Copy...

  • Page 57: Micro Controller And Lcd Power Control

    0.1u BRIGHTNESS 4.7K 0.1u 220u / 16V BRIGHTNESS SOP-8 C231 VCC12 10u / 25V 0.1u 0.1u 10u / 25V ViewSonic Corporation R139 4.7K 7PIN 2.0mm DIP 180"(CNN-P007W-2403) 2N3904 Title 2N3904 Size Document Number VE150m/mb Custom V0.1 Date: Friday, August 09, 2002...

  • Page 58: Vga Input

    4.7K 74LVC14 74LVC14 0.1u 4.7K 4.7K VSYNC+ VCLK SCL-DDC SCL-DDC SDA-DDC SDA-DDC 24LC21 10p(NP) 10p(NP) ViewSonic Corporation Title VGA INPUT Size Document Number VE150m/mb Custom V0.1 Date: Friday, August 09, 2002 Sheet ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...

  • Page 59: Output Connector

    RGB-B2 FB76 RGB-B3 FB77 RGB-B4 FB78 RGB-B5 FB79 3031 RGB-B6 FB80 RGB-B7 FB81 CON30 LCDVDD LCDVDD ViewSonic Corporation 0.5 ZIF FPC SMT R/A TYPE Title 4042 C151 C152 C153 C154 C155 C156 C157 C158 LCD INTERFACE CON40 Size Document Number VE150m/mb 0.5 ZIF FPC SMT R/A TYPE...

  • Page 60: Dc-Dc

    BED-151M1-3501(1206) C186 C188 C189 C190 C191 C192 0.1u 220u / 16V 220u / 16V 0.001u C187 0.1u ViewSonic Corporation Title DC/DC Size Document Number VE150m/mb Custom V0.1 Date: Friday, August 09, 2002 Sheet ViewSonic Corporation Confidential - Do Not Copy...

  • Page 61: Audio

    C232 10u / 25V 0.1u VCC12 VCC12 0.1u(NP) 10u / 25V C230 R140 0.1u 4.7K 2N3904 2N3904 ViewSonic Corporation Title AUDIO Size Document Number VE150m/mb Custom V0.1 Date: Friday, August 09, 2002 Sheet ViewSonic Corporation Confidential - Do Not Copy...

  • Page 62: Chapter 11 Pcb Layout

    PCB LAYOUT Chapter 11 ViewSonic Corporation Confidential - Do Not Copy VE150m/mb...
  • Page 63 *Reader’s Response* Dear Readers: Thank you in advance for your feedback on our Service Manual,which allows continuous improvement of our products. We would appreciate your completion of the Assessment Matrix below, for return to ViewSonic corporation Assessment A. What do you think about the content after reading...

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