BenQ SE2241 Product Service Manual Download Page 58

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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

(11)

DTV

As shown in the system block diagram, there are 5 boards in the system. They are:
(1)

Main Board

(2)

Keypad Board

(3)

Power board

(4)

IR board

In the main board circuits, it contains Scalar (MSd2379A) & Audio Amp(YDA148).

Summary of Contents for SE2241

Page 1: ...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 e...

Page 2: ...ACCEPTANCE 31 LEVEL 1 COSMETIC APPEARANCE ALIGNMENT SERVICE 34 VISUAL INSPECTION CLEANING 34 SOFTWARE FIRMWARE UPGRADE PROCESS 42 ADJUSTMENT ALIGNMENT PROCEDURE 49 LEVEL 2 CIRCUIT BOARD AND STANDARD R...

Page 3: ...EMI Electromagnetic Interference F G H HDMI High Definition Multimedia Interface I J K L M N NTSC National Television System Committee O OSD On Screen Display P PAL Phase Alternating Line Q R RS232 In...

Page 4: ...uld be stored for easy access place Important Service Information RoHS 2002 95 EC Requirements Applied to all countries require RoHS The RoHS Restriction of Hazardous Substance in Electrical and Elect...

Page 5: ...rostatic discharge ESD Follow ESD safety procedures while handling these parts 8 Some products contain more than one battery Do not disassemble any battery or expose it to high temperatures such as th...

Page 6: ...pt this device to practically any consumer video source output that is available in the marketplace It features S video composite video and component video The monitor computer inputs are VGA analog a...

Page 7: ...GA cable Operational Specification 1 Environment Temperature The operating temperature range shall be 0oC to 40oC The non operating temperature range shall be 20oC to 60oC Humidity Operating 10 to 65...

Page 8: ...C Power input C HDMI input DVI 1 0 specification compatible D Headphone Jack E PC Audio input for VGA or HDMI F VGA D Sub 15 pin Input G Component Video YPbPr input H AV S Video YPbPr audio input RCA...

Page 9: ...9 5V for DDC 10 GND 11 TX 12 SDA 13 H sync 14 V sync 15 SCL Signal Level RGB separate analog 0 7Vp p 75 Ohm Input signal Quality 1 Rise Fall time Video Signal less than 4 0ns 2 TTL Signal Level The l...

Page 10: ...108 000 WXGA 1280x960 60Hz 60 000 60 000 108 000 SXGA 1280x1024 60Hz 63 981 60 020 108 000 1280x1024 75Hz 79 976 75 025 135 000 WXGA 1360x768 60Hz 47 712 60 015 85 500 WXGA 1440x900 60Hz 55 935 59 88...

Page 11: ...per frame Horizontal frequency kHz Vertical frequency Hz System 525 15 734 60 NTSC 625 15 625 50 PAL B G D K I 625 15 625 50 SECAM 525 15 734 60 4 43NTSC Input from YpbPr Horizontal frequency kHz Ver...

Page 12: ...reen output 5 HDMI Connector Pin Definition HDMI 19 pins HDMI connector is designed to match with HDMI digital signal cable the pin assignment is as the following 19 pins HDMI female Pin Signal Assign...

Page 13: ...VESA 1600x1200 60Hz VESA 1680x1050 60Hz VESA 1920x1080 60Hz Reduce Blanking 1920x1080 60Hz VESA 6 Power Supply Requirements Input Power Requirements 1 Input Voltage Range Input AC Voltage range is fr...

Page 14: ...formance Item Parameter Specification 1 Display pixels 1920 R G B 1080 2 Display cells NA 3 Pixel pitch 248 25 H um 248 25 V um 4 Cell pitch NA 5 Display pixel type NA 6 Active Area 476 64 H mm 268 11...

Page 15: ...15 4 LCD Module Inspection...

Page 16: ...16...

Page 17: ...17...

Page 18: ...18...

Page 19: ...erating frequency 40 55 60 KHz Lamp Starting Voltage 1780 VRMS 0 C 1380 VRMS 25 C Operating life 40 000 50 000 Hrs 5 Inverter Interface Characteristics Item MIN TYP MAX UNIT Note Power consumption 28...

Page 20: ...This switch is located on the Front bottom side of the display It is a soft power switch and not a main disconnection device Main disconnection shall be accomplished by physically removing the power...

Page 21: ...ture Color temperature selections on Normal default Cool User Warm Aspect Ratio Selections the Image Size on Full default and4 3 Backlight Control brightness via back light adjustment Auto Adjust To a...

Page 22: ...e and color temp LOCK Input a password to enter the Lock menu The default password is 0000 Lock System If the lock system is turned on the following functions need to enter a password Auto Turing DTV...

Page 23: ...the image on the screen Press the button again to resume viewing in real time See Using the freeze function When Teletext displays on screen press this button to freeze Teletext messages Press it aga...

Page 24: ...viewing See Returning to the previous viewed program or input When viewing different input sources press this button to toggle between the current and previous viewed input sources See Returning to t...

Page 25: ...lor Teletext page See Using the Teletext function 23 Picture yellow Press this button to select a preset picture mode See Selecting a picture mode When Teletext displays on screen press this button to...

Page 26: ...r CHROMA 2135 Pattern Generator Fluke 54200 Audio Signal Generator Panasonic Audio Analyzer VP 7723A Fluke 54200 RF Signal Generator Fluke 54200 Head Phone Sony Mini Plug Headset DVD Player SAMPO DVD...

Page 27: ...27 Packing Marking Labels...

Page 28: ...28...

Page 29: ...29...

Page 30: ...30...

Page 31: ...quirements leading to an evaluation of the degree of fitness for use including possible personal injury or property damage for the user of the product 5 0 CLASSIFICATION OF DEFECTS The defects are gro...

Page 32: ...ects but contains no critical and major defects 7 0 EXPRESSION OF DEFECTIVES Number of defects Percent of defects X 100 Number of products inspected 8 0 INSPECTION STANDARD Unless otherwise specified...

Page 33: ...d as a part of the complete product must be included in the evaluation The evaluation must be within the limits of the product specification and for not specified characteristics be related to the des...

Page 34: ...stance 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 Zone C Other areas can be defined as zone C Clas...

Page 35: ...Area cm2 A A surface Number of defect B A surface Number of defect C A surface Number of defect 22 22 22 Particle Blemish Color spot P 0 1 mm2 ignore ignore ignore 0 1 P 0 3mm2 Distance 10 cm 8 9 9 0...

Page 36: ...0 No Description Class 1 Packing 1 1 Wrong packing material Major 1 2 Carton damaged 3cm to 6cm dia Minor 1 3 Carton damaged Over 6cm dia Major 1 4 Carton printing wrong Major 1 5 Carton Dirty and du...

Page 37: ...ghtness 2 chroma23291 input Full white picture measure the brightness at the center of the picture B FULL R G B Window pattern Chroma23291input R G B Window video check dots and picture noise C Hatch...

Page 38: ...ture quality HD 720P Picture quality HD 1080i Picture quality DVD picture NTSC disk Picture quality Ypbpr AV SV HDMI DVD PAL disk Picture quality L R Balance check Sound quality TV tuner Use PAL B G s...

Page 39: ...00 V Size Mono scope Contrast Default Brightness Default 90 H size 100 Light output Full white Contrast Max Brightness Max 500cd m2 Typical 400cd m2 min Brightness Uniformity Full white Contrast Max B...

Page 40: ...ightness out of spec Engineering Spec Major 12 Brightness Uniformity over Engineering spec Major 13 No DDC or wrong DDC date Major 14 Wrong manufacture name model name ID code in DDC data Major 15 Wro...

Page 41: ...ot N 5 5 Foreign Black White Bright sport 0 15 D 0 5mm N 5 6 Foreign Black White Bright Lint 0 07 W 0 1mm 2 L 5mm N 5 7 Mura Judged by 8 ND Filter in 50 gray pattern If both customer and CMO agree mut...

Page 42: ...ware 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 v...

Page 43: ...3 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: ...44 Fig 3 Fig 4...

Page 45: ...45 1 Installation Driver Fig 1 Press the next button to continue Fig 2...

Page 46: ...46 Fig 3 Now press the button Fig 4 Press the close the driver installation ok...

Page 47: ...Tool_410_T exe 2 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 t...

Page 48: ...o 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 When we star...

Page 49: ...OSD to check this function EEPROM INIT A Timing 1920X1080 60Hz B Pattern Cross hatch C Tune on the set and press the and enter key simultaneously and then press power key At this time we can enter int...

Page 50: ...e Table 1 1 1 2 1 3 Color temperature spec default Color temp at COOL Table 1 1 Color temp item factory OSD P N V N Neutral Color temperature x 0 295 0 02 y 0 311 0 02 Table 1 2 Color temp item factor...

Page 51: ...Under PC MODE input PC AUDIO signal checks whether the action of AUDIO IN is right C Under S VIDEO AV MODE input L R AUDIO signal checks whether the action of AUDIO IN is right D Under YPbPr MODE inp...

Page 52: ...52 Level 2 Circuit Board and Standard Parts Replacement Exploded View...

Page 53: ...35KGF CM 1 5B05 SCREW P SW M4 14mm PSW 2N 4 5B06 FOOT PAD 20 3 0T SQUARE GRAIN BLK 4 5F01 METAL FITTG SE2221 MAIN EU SECC 0 6T 1 5F02 SCREW M3 4 P 0 5 4 5F04 SCREW SPE ISZZTER001A M3 6L MSWR17 FZMYI 5...

Page 54: ...sassembly of Stand from LCD TV 1 1 Detach Dust Cover from the LCD TV and Unscrew 4 screws to move Stand Unit Dust Cover 2 Disassembly of Rear Cover Power Board Main Board and Panel Unit 2 1 Unscrew 9...

Page 55: ...55 2 2 Unscrew 2 screws to remove Dust Cover 2 3 Unscrew 10 screws to remove Shield Plate Rear Cover...

Page 56: ...56 2 4 Unscrew 4 screws and disconnect the wires to remove Main Board and Dust Cover Side Shield Plate Main Board...

Page 57: ...57 2 5 Unscrew 5 screws and disconnect the wires to remove Power Board 2 6 Unscrew 4 screws to remove Panel Bracket Power Board...

Page 58: ...I 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 11 DTV As shown in the system block diagram there are 5 boards in the system...

Page 59: ...P BEAD OK N D807 I801 I801 VCC3 3V OK CHECK I115 SUROUND CAP BEAD OK N Y CHECK Q107 SUROUND CAP OK Y CHECK D102 SUROUND CAP OK D807 I801 I801 33V_NormalOK CHECK I117 SUROUND CAP BEAD OK N Y CHECK I116...

Page 60: ...Y Check Check S Video SOUCE S Video cable Check N Check N N L120 C384 C389 I107 SUROUND Y Check Check YPbPr cable Check N Check N N C368 C370 C371 YPbPr SOUCE Check TV SOUCE Check RF CABLE Check N Che...

Page 61: ...r toBracket fix 1 5 SCREW M3X6 P 0 5 2 5 7kgf cm Io bracket fix to metal fitty 2 6 SCREW M3 6 P 0 5 BLACK 4 5 7kgf cm Lock up to CABI BACK 2 5 7kgf cm Lock up to CABI BACK for HDMI 2 7 SCREW BND T M3X...

Page 62: ...62 Appendix 2 IR Code...

Page 63: ...63 Appendix 3 Wall Mount Dimension Scale 1 1 Unit mm...

Page 64: ...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 e...

Page 65: ...2 Content Index Level 3 Component Repair to Circuit Boards 3 Theory of Circuit Operation 3 Circuit Schematic 5 PCB Artwork 19...

Page 66: ...yer I and II digital audio decoder with analog audio outputs that are designed to support DVB SDTV programs while handling conditional access Audio The YDA148 D 510 is high efficiency digital audio po...

Page 67: ...o Fine Tuning Output DO NOT CONNECT IT to ANYWHERE Video 15 Analog Video Output Audio 16 Analog Audio Output SIF 17 Second IF Sound Output SDA 18 I2C Bus for COFDM IC Use it for I2C Bus interface SCL...

Page 68: ...5 Circuit Schematics Power...

Page 69: ...6 MSD2379A_BGA_IC...

Page 70: ...7 DDR_SDRAM_ 32bit...

Page 71: ...8 VGA...

Page 72: ...9 HDMI INTERFACE...

Page 73: ...10 SCART...

Page 74: ...11 SCART Interface...

Page 75: ...12 Video_Interface...

Page 76: ...13 TUNER...

Page 77: ...14 Audio Amp Interface...

Page 78: ...15 LVDSx2 Panel...

Page 79: ...16 CI_PCMCIA...

Page 80: ...17 IR BOARD...

Page 81: ...18 KEYPAD BOARD...

Page 82: ...19 PCB Artwork MAIN PCB TOP VIEW...

Page 83: ...20 MAIN PCB BOTTOM VIEW...

Page 84: ...21 KEYPAD PCB TOP VIEW KEYPAD PCB BOTTOM VIEW...

Page 85: ...22 IR PCB TOP VIEW...

Page 86: ...23 IR PCB BOTTOM VIEW...

Page 87: ...24 POWER PCB TOP VIEW...

Page 88: ...25 POWER PCB BOTTOM VIEW...

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