BenQ SE2241 Product Service Manual
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BenQ SE2241 Product Service Manual

BenQ SE2241 Product Service Manual

Level 2
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Applicable Country & Regions:
Europe
Product Service Manual – Level 2
Service Manual for BenQ:
Monitor-TV/SE2241
<9H.V0375.JAE>
Version: 00a
Date:2009/04/20
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 (Apr 2009)
© Copyright BenQ Corporation 2009. All Right Reserved.
1

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Summary of Contents for BenQ SE2241

  • Page 1 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 (Apr 2009)

  • Page 2: Table Of Contents

    Content Index ABBREVIATIONS & ACRONYMS ....................... 3 ABOUT THIS MANUAL ........................4 INTRODUCTION ..........................4 GENERAL DESCRIPTIONS ......................... 5 RELATED SERVICE INFORMATION ....................5 PRODUCT OVERVIEW ........................6 SPECIFICATION ......................6 PACKING ........................27 CUSTOMER ACCEPTANCE ..................31 LEVEL 1 COSMETIC / APPEARANCE / ALIGNMENT SERVICE ............ 34 VISUAL INSPECTION &...

  • Page 3: Abbreviations & Acronyms

    Abbreviations & Acronyms A/D Converter Analog to Digital Converter BenQ BenQ Corporation Digital Television Electromagnetic Interference HDMI High Definition Multimedia Interface NTSC National Television System Committee On Screen Display Phase Alternating Line Interface Between Data Terminal Equipment and Data RS232...

  • Page 4: About This Manual

    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. Important Only trained service personnel who are familiar with this BenQ Product shall perform service or maintenance to it.

  • Page 5: General Descriptions

    This Service Manual contains general information. There are 2 levels of service: Level 1: Cosmetic / Appearance / Alignment Service Level 2: Circuit Board or Standard Parts Replacement Related Service Information Service Web Site BenQ Global Service Website: http://www.benq.com/support/ eSupport Website: http://esupport.benq.com/v2...

  • Page 6: Product Overview

    Product Overview This specification describes a display device that is based on a 22 inch TFT LCD display TV/Monitor. The part number of the panel is AUO M215HW01. The native resolution of the panel is 1920 X 1080. At this resolution the monitor device can be described as WUXGA and the television can be best described as “HDTV”...
  • Page 7 (7) User interface: - User controls: on/off switch, key pad with input select, menu, channel up, channel down, left( - ), right ( + ) - IR remote controller - Fancy OSD (on screen display) for user control interface - Color indicator for power on/standby (8) It is composed of the following material and accessories (Accessory might be adjusted by different territory request): -LCD TV *1...
  • Page 8 (3) Input / Output Signal Specification I/O Interfaces C D E F G H I Main (AC) Power Switch AC inlet (AC Power input) HDMI input (DVI 1.0 specification compatible) Headphone Jack PC Audio input for VGA or HDMI VGA (D-Sub-15 pin) Input Component Video (YPbPr) input AV/ S-Video / YPbPr audio input (RCA L / R) S-Video input...
  • Page 9 1. PC Analog Signal Signal cable : D-Sub: 15pin D-sub connector is on the captive signal cable for IBM VGA or compatible graphic adapters. The shall be 1.8 meters long.The pin assignment of this connector is described as below: D-Sub Connector Green Blue Red GND...
  • Page 10 Signal Timing: Resolution Horizontal Vertical Pixel Mode Plus Frequency Frequency Frequency Frequency (kHz) (Hz) (MHz) IBM, VGA 720x400@70Hz 31.469 70.080 28.320 640x480@60 Hz 31.469 59.940 25.175 640x480@72 Hz 37.861 72.809 31.500 640x480@75 Hz 37.500 75.000 31.500 800x600@56Hz 35.156 56.250 36.000 800x600@60Hz 37.879 60.317...
  • Page 11 (2) Component audio pin define: (A) Audio Input, right channel, for YCrCb or YprPb (B) Audio Input, left channel, for YCrCb or YPrPb Signal Level: (1) YPbPr input: Component signal: 0.7~1Vp-p/75 Ohm, negative (2) Audio: Level: 500 mVrms Impedance: 600 ohms Signal support timing: Input from YcbCr: Lines per frame...
  • Page 12 Earphone output Headphone impedance = 32 ohm Output level 150mV 4. Output Source The audio from the displayed program (TV or any AVs) is permanently Left & Right outputs, for connecting an external amplifier. The output level is either fixed or variable according to the volume same signal as screen output.
  • Page 13 Signal Level: Digital (DVI-D) applicable HDMI / DVI Video Signal support timing: Video signal PC signal 5760i 720x400@70Hz (IBM, VGA) 576p 640x480 @ 60Hz (VESA) 720p 640x480 @ 67Hz (MAC) 1080i 640x480 @ 72Hz (VESA) 1080p 640x480 @ 75Hz (VESA) 800x600 @ 56Hz (VESA) 800x600 @ 60Hz (VESA) 800x600 @ 72Hz (VESA)
  • Page 14 7. Output Functional specification ll the tests to verify specifications in this section must be performed under the following standard conditions unless otherwise noted. The standard conditions are: -Temperature: 15- 25degree Celsius -AC line input voltage: 110~240VAC -Checking display mode: All the presenting modes. -Warm-up time: 30 minutes minimum 8.
  • Page 15 (4) LCD Module Inspection:...
  • Page 19 3. Classification Table of defects: 4. Backlight Characteristics: Item UNIT Note Lamp Input voltage VRMS Lamp current mARMS Operating frequency 1780 VRMS 0°C Lamp Starting Voltage 1380 VRMS 25°C Operating life 40,000 50,000 - 5. Inverter Interface Characteristics: Item UNIT Note Power consumption Input Voltage...
  • Page 20 (5) Audio Spec Parameter Specification Base band Input Power Output Max Rating 3W at 10% T.H.D Distortion Speaker Impedance main spk :8 Ω 500 mV rms (Typ) 1.6 V rms (Max) Line In Impedance: 600 ohms 500 mVrms +/- 10% Line Out @1K Hz tone (with +/-25k Hz deviation at input, volume with non-attenuation and loading with 47k Ohm)
  • Page 21 (7) OSD Control flow Picture Mode Picture effect selections on Dynamic (default), Standard, Mild, User Contrast Adjust the White levels (0~100) Brightness Adjust the Black levels (0~100) Colour Adjust the Color levels (0~100) Tint Adjust the Tint levels (-50~ 0~ + 50) Sharpness Adjust the Sharpness levels (0~100) Picture...
  • Page 22 Language OSD language selection Audio Language Audio language selection. The function is only for DTV source Subtitle Language Subtitle language selection. The function is only for DTV source It will have more voice description in subtitle if the hearing impaired Hearing Impaired function is turned on.
  • Page 23 (8) Remote Controller The remote control is a standard accessory packed with the LCDTV set. The communication between remote control and receiver on LCDTV set is commonly by the emitting and receiving of infrared signals. Power/standby Press this button to power the TV on or put it to the standby mode.See “Power on,off standby”...
  • Page 24 Backlight Press this button to adjust your desired screen backlight level. See "Adjusting backlight". Favorite Press this button to jump to one of the favorite channels you have stored. See "Jumping to your favorite channels" . EQ Mode Press this button to select from preset EQ modes. See "Selecting a preset EQ mode"...
  • Page 25 19. MENU Press this button to display the OSD menu for commands and settings. Press it again to close. See "Navigating the OSD menu". BACK In the OSD menu, press this button to return to the previous menu page. See "Navigating the OSD menu"...
  • Page 26 (9) Maintainability Specifications 1. General & Requirements (1) Main Board ASSY (2) Keypad Board ASSY (3) IR Board ASSY (4) Power Board ASSY 2. Mean Time to Repair 2.1 Module Level: Less than 20 minutes 2.2 Component Level: Less than 20 minutes 3.

  • Page 27: Packing

    Packing Marking & Labels...

  • Page 31: Customer Acceptance

    Note: If BenQ defect undefined failure, and it judged that is reduce the merchandise ability, BenQ CM Inform this defect. After that parties make communication and decide how to solve.
  • Page 32 6.0 CLASSIFICATION OF DEFECTIVES A defective is a product, which contains one or more defects. The defective will be classified into following classes: Critical defective A critical defective contains one or more critical and may also contain major and/or minor defects. Major defective A major defective contains one or more defects and may also contain minor defects but contains no critical defect.
  • Page 33 10.0 TEST CONDITIONS Unless otherwise prescribed, the test conditions are as follows: 11.0 TEST EQUIPMENTS 11.1 BenQ PCs with BenQ display adapter or other specific display adapter, which is agreed upon by both parties 11.2 Test program by BENQ 11.3 Power saving test tool 11.4 Minolta color analyzer...

  • Page 34: Level 1 Cosmetic / Appearance / Alignment Service

    Level 1 Cosmetic / Appearance / Alignment Service Visual Inspection & Cleaning 1.0 Inspection distance for different zone: and timing to inspect Zone A: Front view of the bezel. Zone B: a) Top view and right view of the bezel. b) Front view of base stand.
  • Page 35 Inspection interval (time) Inspection interval is a function of surface area. Parts Size “A” surface “B” surface “C” surface Scan speed 10sec 10sec 10sec 1.1 Appearance Inspection Criteria Spot (Spec) A (A surface ) B (A surface ) C (A surface ) (Number of defect) (Number of defect) (Number of defect)
  • Page 36 Scratch (Scratch): Defects of specified area Minimum ≦10*10 cm ≦50*50 cm ≦70*70 cm ≦100*100 cm >100*100 cm Zone Width / Length distance >10000 cm ≦100cm ≦2500 cm ≦4900 cm ≦10000 cm Of two points ≦ 0.1/3 mm 50mm ≦ 0.1/5 mm 50mm ≦...
  • Page 37 OPERATIONAL INSPECTION CRITERIA 1. 0 TEST PATTERN PATTERN TEST ITEM FULL WHITE 1. chroma23291 input5 dot picture, adjust the Brightness &contrast to MAX, Test 5dots Brightness 2. chroma23291 input Full white picture, measure the brightness at the center of the picture FULL R, G, B, Window pattern Chroma23291input R/G/B/Window video,...
  • Page 38 1. 1. Test content Test Condition TEST ITEM Input Equipment EDID ‘s software Check EDID Adjust volume from min to max, PC sound check PC& adjust Balance D-SUB Chroma23291 PC Mode 1.check if video is or Chroma2329 Audio Follow Engineering spec ‘s timing normal or MIK K-8257 2.check noise...
  • Page 39 1.2. Specification: Item Pattern Condition Specification Contrast: Default H -Resolution Mono scope ≧280 Brightness: Default Contrast: Default V -Resolution Mono scope ≧350 Brightness: Default Contrast: Default H -Size Mono scope 90%≦H-size<100% Brightness: Default Contrast: Default V -Size Mono scope 90%≦H-size<100% Brightness: Default Contrast: Max 500cd/m2 (Typical)
  • Page 40 1.3. OPERATIONAL INSPECTION CRITERIA: Description Class Display H/V size over specification Major Display H/V –Resolution over specification Major Video noise Major Operating frequency out of spec, out of range Major OSD wrong words, OSD function fail Major Color temperature out of spec(Refer to Engineering Spec) Major No power, no video, LED does not illuminate Major...
  • Page 41 INSPECTION CRITERIA 1.0 Panel electrical inspection specification: Inspection Item Specification Line defect Can’t be seen. Bright dot ≦ 3 dots Random dot defect 2 dots adjacent </=1 Random </=5 dots 2 dots adjacent </=2 3. Dark dot 3 dots adjacent </=0 Minimum Distance Between Dark dots L >/=5mm 4.

  • Page 42: Software/Firmware Upgrade Process

    Software/Firmware Upgrade Process How to enter Factory OSD 1. Please press keypad to enter Factory Mode. 2. Press “Enter” key + “Up” key together and then press “Power” key to enter Factory Mode 3. Confirm software version...
  • Page 43 Software download procedure The ISP SOP FOR MST 1. Connection PC to the TV set by the tool as the follow picture (Fig.1~4) Action: The D_SUB cable must be 15 pin, and the TV set must be AC ON Fig.1 Fig.2...
  • Page 44 Fig.3 Fig.4...
  • Page 45 1: Installation Driver Fig.1 Press the “next” button to continue. Fig.2...
  • Page 46 Fig.3 Now press the “确定“button”. Fig.4 Press the “close”,the driver installation ok.
  • Page 47 2. Start the Isp 1. Open the “ISP_Tool_410_T.exe” Press the “config”, if the the ISP board have been found, you will see the picture as bellow. Fig.5 3 Press the “Connect”, if all the things are ok and ready, it will show the device type as the bellow picture.
  • Page 48 4. Press “read” and choose the right F/W . Fig.7 5. Press “Auto”, than press “Run”. It will start ISP . When the ISP is ok ,you will see the information as the bellow picture. Fig.8 6. Pull away the AC power Cord and the D-SUB Cable. And start another TV set. 7.

  • Page 49: Adjustment / Alignment Procedure

    Adjustment / Alignment Procedure 1. Preparation: 1. Approximately 30 minutes should be allowed for warm up before proceeding. 2. Adjustments should be undertaken only on those necessary elements since most of them have been carefully preset at the factory. 3. ESD protection is needed before adjustment. 2.
  • Page 50 4. YPbPr MODE Color Temperature adjusting : A. Timing: 1920X1080@60Hz. B. Pattern: COLOR BAR. C. Set CA210 color analizer at the center of screen and along a perpendicular to the screen near the display. In the factory mode select the “SOURCE” item, then select :YPbPr E.
  • Page 51 8. YPbPr, S-VIDEO, AV, TV, FUNCTION TEST A. Input YPbPr, S-VIDEO, AV, TV, signal and check. B. Input PAL D/K air channel (TABLE 1) for TV channel. C. Under YPbPr MODE, Make sure the 408i, 480P, 720P, 1080i ,1080P is right. 9.

  • Page 52: Level 2 Circuit Board And Standard Rarts Replacement

    Level 2 Circuit Board and Standard Parts Replacement Exploded View...
  • Page 53 EXPLODED VIEW PARTS LIST Ref. No. Source DESCRIPTION SPECIFICATION Q‘TY REMARK 1F01 ORNAMENT SE2231 MIDDLE FRAME ABS 94HB SILVER SE2241 SENSEYE HDMI HDTV ABS 94HB G.L BLACK COOL 1F02 FRONT BEZEL GRAY 10C 1F03 GRILL SE2231 ABS 94HB DARK-SPARK RED 1F04 LED INDIC.-PWR...

  • Page 54: Disassembly / Assembly

    Disassembly / Assembly Disassembly of Stand from LCD TV. Detach Dust Cover from the LCD TV and Unscrew 4 screws to move Stand Unit Dust Cover Disassembly of Rear Cover, Power Board, Main Board and Panel Unit. Unscrew 9 screws to remove Rear Cover.
  • Page 55 Rear Cover Unscrew 2 screws to remove Dust Cover. Unscrew 10 screws to remove Shield Plate.
  • Page 56 Shield Plate Unscrew 4 screws and disconnect the wires to remove Main Board and Dust Cover –Side. Main Board...
  • Page 57 Unscrew 5 screws and disconnect the wires to remove Power Board. Power Board Unscrew 4 screws to remove Panel Bracket.

  • Page 58: System Block Diagram

    System Block Diagram The LCD TV uses 1920x1080 LCD Panel to display image. This LCD TV can accept the following input sources: (1) HDMI connector (2) D-SUB connector (3) PC audio (4) Component (5) S-Video (6) Composite (7) Audio In*1 (L/R) (8) Scart (9) Earphone (10) TV Tuner...

  • Page 59: Troubleshooting

    Troubleshooting STAR CHECK MAIN PCB CHECK CHECK VCC5V POWERPCB P201 CHECK CHECK VCC2.5VOK D807,I801,I801 I116,SUROUND CAP Q107 BEAD OK? SUROUND CAP OK? CHECK CHECK VCC3.3V D807,I801,I801 I115,SUROUND CAP D102 BEAD OK? SUROUND CAP OK? CHECK CHECK 33V_NormalOK D807,I801,I801 I117,SUROUND CAP I116 BEAD OK? SUROUND CAP OK?
  • Page 60 NO display Power key Check Check Check KeypadP701 I201 Work ok X201 Check Check Check Check INVERTER P106 Q206,I213 PANEL Check Check Check Check I208,SUROUND PC SOUCE D-sub cable I208 Check Check Check Check L226,R411,C372 AV SOUCE AV cable P403 Check Check Check...

  • Page 61: Appendix 1- Screw List/Torque

    Appendix 1 – Screw List /Torque TORQUE ITEM DESCRIPTION SPECIFICATION Q‘TY WHERE USE Q‘TY (KG-CM) 5~7kgf/cm Power board to metal fitty ISZZTER001A M3*6L 5~7kgf/cm Main board to metal fitty SCREW SPE MSWR17/FZMYI 5~7kgf/cm Link to Cable of erath 5~6kgf/cm Link to earth SCREW SPE M4X4 PMS-3/W 2~3kgf/cm...

  • Page 62: Appendix 2 -Ir Code

    Appendix 2 –IR Code...

  • Page 63: Appendix 3- Wall Mount

    Appendix 3 – Wall Mount Dimension Scale: 1:1 Unit: mm...
  • Page 64 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 (Apr 2009)
  • Page 65 Content Index Level 3 - Component Repair to Circuit Boards ..................3 Theory of Circuit Operation ........................3 Circuit Schematic ............................5 PCB Artwork ............................. 19...

  • Page 66: Level 3 - Component Repair To Circuit Boards

    Level 3 - Component Repair to Circuit Boards Theory of Circuit Operation Video: The MSD2379AG is a high performance and fully integrated IC for multi-function LCD monitor/TV with resolutions up to HD(1920x1080).It is configured with an integrated triple-ADC/PLL, an integrated Note DVI/HDCP/HDMI receiver , a multi-standard TV video and audio decoder, a video de-interlacer, a scaling engine, the MStarACE-3 color engine, an on-screen display controller, an 8-bit MCU and a built-in output panel interface.With external frame buffer, 3-D video decoding and processing are fulfilled for high-quality TV applications.To further reduce system costs, the The...
  • Page 67 SYMBOL DESCRIPTION ANT(5V) Supply voltage +5V , for ANT BB(CTR) Supply voltage +5V , for Booster Ground +B(5V) Supply voltage +5 V , for Tuner & IF Section Not connected RF AGC RF AGC output Tuning Voltage, DO NOT CONNECT IT to ANYWHERE Not connected Ground I2C Bus for TUNER PLL, Analog IC.

  • Page 68: Circuit Schematic

    Circuit Schematics Power...
  • Page 69 MSD2379A_BGA_IC...
  • Page 70 DDR_SDRAM_ 32bit...
  • Page 72 HDMI INTERFACE...
  • Page 73 SCART...
  • Page 74 SCART Interface...
  • Page 75 Video_Interface...
  • Page 76 TUNER...
  • Page 77 Audio Amp. Interface...
  • Page 78 LVDSx2 Panel...
  • Page 79 CI_PCMCIA...
  • Page 80 IR BOARD...
  • Page 81 KEYPAD BOARD...

  • Page 82: Pcb Artwork

    PCB Artwork MAIN PCB TOP VIEW...
  • Page 83 MAIN PCB BOTTOM VIEW...
  • Page 84 KEYPAD PCB TOP VIEW KEYPAD PCB BOTTOM VIEW...
  • Page 85 IR PCB TOP VIEW...
  • Page 86 IR PCB BOTTOM VIEW...
  • Page 87 POWER PCB TOP VIEW...
  • Page 88 POWER PCB BOTTOM VIEW...

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