BenQ XL2411T Product Service Manual
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BenQ XL2411T Product Service Manual

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Product Service Manual – Level II
Service Manual for BenQ:
XL2411T
P/N: 9H.L9SLB.xxx
Applicable for All Regions
Version: 001
Date:2012/09/06
Notice:
- For RO to input specific "Legal Requirement" in specific NS regarding to responsibility and liability
statements.
- Please check BenQ's eSupport web site, http://esupport.benq.com, to ensure that you have the most
recent version of this manual.
First Edition (Sep, 2012)
© Copyright BenQ Corporation 2012. All Right Reserved.
- 1 -

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Summary of Contents for BenQ XL2411T

  • Page 1 - For RO to input specific “Legal Requirement” in specific NS regarding to responsibility and liability statements. - Please check BenQ’s eSupport web site, http://esupport.benq.com, to ensure that you have the most recent version of this manual. First Edition (Sep, 2012) ©...

  • Page 2: Table Of Contents

    Content Index Abbreviations & Acronyms ................3 1 About This Manual ..................3 1.1. Trademark ......................3 2 Introduction ....................4 2.1. RoHS (2002/95/EC) Requirements ..............4 2.2. Safety Notice......................4 2.3. Compliance Statement ..................4 2.4. General Descriptions ................... 4 2.5.

  • Page 3: Abbreviations & Acronyms

    Abbreviations & Acronyms 1 About This Manual This manual contains information about maintenance and service of BenQ products. Use this manual to perform diagnostics tests, troubleshoot problems, and align the BenQ product. 1.1. Trademark The following terms are trademarks of BenQ Corporation:...

  • Page 4: Introduction

    This Service Manual contains general information. There are 3 levels of service: Level 1: Cosmetic / Appearance / Alignment Service Level 2: Circuit Board or Standard Parts Replacement Component Repair to Circuit Boards Level 3: 2.5. Related Service Information BenQ Global Service Website: http://www.benq.com/support/ eSupport Website: http://esupport.benq.com/v2 - 4 -...

  • Page 5: Product Overview

    XL2411T is defined 24’W LCD Monitor supports WXGA (1920x1080) resolution with DPMS (Display Power Management System) and Senseye function. There are five different input types, D-sub, DVI-D Dual-Link, and HDMI ports of models. XL2411T adopts AUO panel, M240HW01-V8. The features summary is shown as below, * All spec.
  • Page 6 (3) 6500K mode : (x,y)= (0.313, 0.329)+/-(0.02, 0.02) (4) sRGB: (x,y)= (0.313, 0.329)+/-(0.015, 0.015) AC power input 90-264 Volts, 47-63 Hz. DC power input (with AC power adapter) No DPMS supported(Power Saving) <0.5W LED indicator for power status showed White/Amber OSD for control &...
  • Page 7 1. 1500VAC, 1 sec Without damage (on-line test)  Hi-Pot 2. Ground test: 30A, < 0.1 ohm (in-lab test) 1sec  IEC1000-4-4 Power Line Transient Common: 2KV,  IEC1000-4-5 (Surge) Differential: 1KV  LED Operation Current (2D) 90V ~ 264VAC 110mA Panel Spec 200mA...
  • Page 8 Note-1: The pin assignment of 15-pin D-sub connector is as below, Signal Assignment Signal Assignment Red video PC5V (+5 volt power) Green video Sync Ground Blue video Ground Ground Cable Detected H-Sync (or H+V) Red Ground V-sync Green Ground Blue Ground Note-2: The pin assignment of 24-pin DVI-D connector is as below, Signal Assignment Signal Assignment...
  • Page 9 Note-3: The pin assignment of 19-pin HDMI connector is as below 3.1.2.3 Video performance Item Condition Spec OK N.A Remark Both for analog and  170 MHz HDMI Max. support Pixel rate DVI-D Dual-link  330 MHz And DP  Max.
  • Page 10 3.1.2.5 Plug & Play DDC2B DDC-CI Support Item Condition Spec OK N.A Remark  DDC channel type DDC2B Refer to S/W spec. Version 1.3 document to see the  EDID detailed EDID data definition.  Refer to S/W spec DDC-CI Version 1.1 or Later 3.1.2.6 Support Timings...
  • Page 11 3.1.3 Operational & Functional Specification 3.1.3.1 Video performance *All spec. of monitor need to warm up at least 1hr. Item Condition Spec OK N.A Remark Any input resolution  Resolution modes which are 1920 x 1080 under 1920x1080 Test Condition: Set Contrast at 50, Brightness ...
  • Page 12 3.1.3.2 Brightness Adjustable Range Item Condition Spec OK N.A Remark (Max. brightness value – At default contrast level Brightness adjustable  (saturate point) & Full- Min. brightness value) range ≧ 100 cd/㎡ white color pattern 3.1.3.3 Acoustical Noise Item Condition Spec OK N.A Remark...
  • Page 13 91 cm Height (MP stage) (1 corner, 3 edges, 6 faces) Package,  (3) Drop Non- Operating Waveform: half sine Wooden Faces: 6 sides/ per orientation  (4) Shock package, Non- 3 shocks. Operating Duration: <3ms Velocity accelerate: 75g 3.1.3.6 Electrostatic Discharge Requirements Item Condition...
  • Page 14 3.1.3.9 Audio performance Item Condition Spec OK N.A Remark Speaker (1)Nominal impedance @ 1KHz 4 ± 15% ohm (2)Rated input power 3W/CH (3)Frequency response SPL-10dB 450~20KHz SPL-10dB (4)Output sound pressure level 1W 0.5M >75 ± 3 dB Earphone out when 1Vrms sin wave input, tested Signal Level <= 150 mVrms...
  • Page 15 Green y Typ.- 0.622 Typ.+0.03 0.03 Blue x Typ.- 0.151 Typ.+0.03 0.03 Blue y Typ.- 0.053 Typ.+0.03 0.03 White x Typ.- 0.313 Typ.+0.03 Color Coordinates (CIE) 0.03 White White y Typ.- 0.329 Typ.+0.03 0.03 9 points Luminance Uniformity measurement White Luminance @ CCFL [cd/m2] 6.0mA (center) Crosstalk (in 60Hz)
  • Page 16  Language 17 languages  Recall Recall All Standard Movie Photo sRGB  Mode FPS1 FPS2 Gamer1 Gamer2 Gamer3  Input Select  Sharpness  Display Information For input timing Selection by Custom  Volume Selection by Custom  Mute Selection by Custom ...
  • Page 17 3.1.6.3 Plastic Item Condition Spec OK N.A Remark  Flammability >ABS<,94-HB  65 ℃ Heat deflection To  UV stability Delta E < 8.0 MPRII: ABS  Resin (SD0150/PA756/GP- 35/HF-380/D-150) RC&CVR: MT-11020  Texture Others: MT-11010  Color 7015A(Black) 3.1.6.4 Carton Item Condition Spec...
  • Page 18 3.1.7.2 Carton Specification Product: Dimension w/o Base Net Weight (Kg) Gross Weight (Kg) W*H*D (mm) 6.0Kg 8.5Kg 570*348.4*63 Package: Carton Interior Dimension (mm) Carton External Dimension (mm) L*W*H L*W*H 640*408*231 652*420*251 - 18 -...
  • Page 19 3.1.8 Certification - 19 -...

  • Page 20: Customer Acceptance

    3.2.1. SCOPE This document establishes the general workmanship standards and functional Acceptance criteria for LCD color monitor model XL2411T Produced by BenQ. 3.2.2. PURPOSE The purpose of this publication is to define a procedure for inspection of the LCD monitor...
  • Page 21 Minor defect A minor defect is a defect that is not likely to reduce materially the usability of the product for its intended purpose, or is a departure from established standards having little bearing on the effective use of operation of the product. 3.2.6.
  • Page 22 TEST EQUIPMENTS 1. PC with display adapter or other specific display adapter which is agreed upon by both parties 2. Test program by BenQ 3. Ruler 4. Power saving test tool 5. Minolta color analyzer (CA-110 or BM – 7)
  • Page 23 3.2.12. VISUAL INSPECTION CRITERIA 1. PACKING 2. ACCESSORIES 3. APPEARANCE 4. AC POWER AND SIGNAL CABLE 5. INTERIOR OF THE PRODUCT Description Class Packing 1.1 Wrong packing material Major 1.2 Carton damaged(over 6cm dia).wet, badly taped or stapled, product will not arrive Minor in good condition at customer 1.3 Carton damaged(3cm to 6cm dia), badly taped or stapled , product will arrive in...
  • Page 24 3.22 Dirty front bezel and housing removable easily Minor 3.23 Sticker or loose user control switch which will not function correctly Major 3.24 Missing knob or switch, not safe Critical 3.25 Missing knob or switch, but safe Major 3.26 Poor functional user controls in mechanical Major 3.27 Unreadable printing of user controls label Major...
  • Page 25 3.2.13. OPERATIONAL INSPECTION CRITERIA 1. TEST PATTERN 2. SPECIFICATIONS 3. OPERATIONAL INSPECTION CRITERIA 3.2.13.1. List of test pattern PATTERN TEST ITEM H - Size , V – Size FULL WHITE Viewing Angle Light Output Impurity, Spot check Contrast Ratio Brightness adjust Range DARK Background, Spot check FULL W , R , G , B...
  • Page 26 3.2.14. PANEL INSPECTION CRITERIA Panel Description M240HW01 V8 Model Name XL2411T Bright Dot Single 3 Dots Dark Dot Single 5 Dots Bright Dot (Distance between two Bright 15mm Dots) Dark Dot Density (Distance between two Dark 15mm Dots ) Bright to Dark Dot...

  • Page 27: Level 1 Cosmetic / Appearance / Alignment Service

    4. Level 1 Cosmetic / Appearance / Alignment Service Software / Firmware Upgrade Process 4.1.1 Hardware Requirement: Step 1: Prepare PC with 2K or XP system, printer port cable x1 and D-sub cable x1 Step 2: Prepare ISP board and setup jumper as below. Pin 1 &2 of J5,J6,J7,J8 are for Firmware Upgrading.
  • Page 28 Step 3: 1. Connect printer port cable between PC LPT1 and ISP board Then connect signal cable between ISP board (position 1) and monitor. 2. Power on the monitor. Connection: a. Connect the Printer Cable to the Printer Connector. b. Connect the other side to the Board c.
  • Page 29 4.1.2 Firmware Upgrade Prepare for XL2411T Step1: Run Program MStarISPToolv4.3.4.exe (refer to below Picture) Step2: Program Setting Click the button ‘Auto’, to set the ISP tool as bellow: - 29 -...
  • Page 30 Step3: Click the button “Read” to open the firmware that will be ISP Step4: Click the button “Connect” ,one cue “Device Type is xxxx” will show as bellow. If not, check connects again: - 30 -...
  • Page 31 Step5: Click the button “Run” to continue the programming. If the ISP process is successful, it will show “Pass” Step6: AC off/on, and turn on Factory Menu, and check F/W version - 31 -...
  • Page 32 4.1.3 EDID Upgrade Process 4.1.3.1 Software configuration: Step 1: Un-zip Port95nt and install into your computer. Step 2: Un-zip QEDIDV016.rar 4.1.3.2. Hardware configuration: Step 1: Prepare following items a. PC with 2K or XP system*1 b. printer port cable *1 c.
  • Page 33 Step 3: Connect printer port cable between ISP board and PC LPT1 Connect one D-Sub cable between ISP board (position 1) and monitor Connect another D-Sub cable between ISP board and PC - 33 -...
  • Page 34 4.1.3.3 EDID Upgrade Procedure Step 1: Run the program “Q-EDID-V016.exe”, when the UI popped up Note: If “VGA” choose 128bytes, and “HDMI” choose 256bytes - 34 -...
  • Page 35 Step 2: Click “Open File” and select “VGA” or “HDMI” EDID file Step 3: If load file is successful, it shows “Open EDID Table OK.” And then, Click “Write EDID” button to update EDID - 35 -...
  • Page 36 Step 4: If write EDID is successful, it shows”Write EDID OK …” And then, click “Read EDID” button to check if successful or not. Step 5: If read EDID is successful, it shows” Read EDID OK …” - 36 -...

  • Page 37: Alignment Procedure (For Function Adjustment)

    4.2. Alignment procedure (for function adjustment) A. Preparation: Setup input timing ICL-605(800x600@60Hz), Pattern: 5-Mosaic. Setup unit and keep it warm up at least 30 minutes. B. Timing adjustment: Enter factory setting area (press “ENTER”, “MENU” and then press “SOFTPOWER”). Check the settings to following values: Contrast = 50 Brightness = 90 Color = User Mode...
  • Page 38 E. Wire Dressing - Assembly note Connect the IF BD with power BD. Put power BD and I/F BD into shielding and fix the screw. Assembly LVDS cable with panel. Assembly the Ctrl board set. Add skew on D-sub, DVI and HDMI. Connect the backlight wire.
  • Page 39 Add gasket on connector of Ear-Jack board and Add AL-tape on shielding, total 3 pcs and gasket must close to panel assemble control board then fix it. Connect earphone wire to IF BD Assembly RC with stand. - 39 -...

  • Page 40: Level 2 Disassembly /Assembly Circuit Board And Standard Parts

    5. Level 2 Disassembly /Assembly Circuit Board and Standard Parts Replacement 5.1. Exploded View - 40 -...

  • Page 41: Disassembly /Assembly

    5.2. Disassembly /Assembly 5.2.1 Disassembly SOP Preparation before disassemble 1. Clean the room for disassemble 2. Identify the area for monitor 3. Check the position that the monitors be placed and the quantity of the monitor ;prepare the area for material flow;...
  • Page 42 Tear down Al foils Take out the light-wires from the panel. Disassemble the C/B Disassembled the SHD Screw shielding : 2/4 screw，and -driver HDMI screw(the monitor with DVI have four) - 42 -...
  • Page 43 Tear down all Al foils Disassembled the AC-soc shielding . Unlock the LVDS wire and panel wire. Screw Disassembled the PCBA -driver shielding : 9 screws Disassemble the PCBA from Main-SHD and disassemble the wire from I/F BD - 43 -...

  • Page 44: Packing

    5.3. Packing - 44 -...

  • Page 45: Block Diagram

    Block diagram The XL2411T is a 24” (1920x1080) Model; LCD type is TN+Film and Normally White, 16.7M colors(R, G, B 6-bit data+FRC data) TFT LCD monitor. There are D-SUB, DVI, and HDMI interface LCD monitor. It’s compliant with VESA specification to offer a smart power management and power saving function.

  • Page 46: Trouble Shooting Guide

    5.5. Trouble Shooting Guide 5.6.1 No Display or display is unstable on analog or digital port: 5.6.1.1 Interface Board: - 46 -...
  • Page 47 5.1.1 BUTTON Function: 5.5.2 OSD Function - 47 -...
  • Page 48 5.5.3 Power no work troubleshooting Backlight did not shine Check D703 LED-20V Replace OK ? D703 +5.0V OK? Replace Check D705 D705 D703 D704 OK ? Replace Check CN701 Check F601, F601, PIN1 (BL-ON) Check I/F BD Q601, OK? Q601 is HI? Replace Check CN701...

  • Page 49: Circuit Operation Theory

    5.6. Circuit Operation Theory Block diagram The XL2411T consists of a LCD module with LED BLU (1 light bar), a power board (with driver board), a control board (ADC key), and an Ear Jack board. The block diagram is shown as below.
  • Page 50 from 1920x1080, combined with the critically proven integrated 8 bit triple-ADC and patented Rapid-lock digital clock recovery system. It also support detect mode and DPMS control. 3. MCU embedded in Scalar: Control unit, it controls all the functions of this interface board, just like the OSD display setting, the adjustable items, adjusted data storage, the external IIC communication, support DDC2Bi.

  • Page 51: Appendix 1 - Screw List / Torque

    Appendix 1 – Screw List / Torque STANDARD SCREW TORQUE SPEC. - 51 -...
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  • Page 54: Appendix 2-Physical Dimension Front View And Side View

    Appendix 2-Physical Dimension Front View and Side view Fig. 1 Physical Dimension Front View and Side view - 54 -...
  • Page 55 Fig. 2 Appearance Description - 55 -...

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