BenQ PB8220 Service Manual
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BenQ PB8220 Service Manual

BenQ PB8220 Service Manual

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PB8220

SERVICE MANUAL

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  • Page 1: Table Of Contents

    PB8220 SERVICE MANUAL CONTENT Chapter 1：Engineering Specification Appendix A Optical Measurement Appendix B Design Verification Test Procedure Appendix C DMD Image Quality Appendix D Electrical Specification Appendix E Power Supply Specification Chapter 2：Spare Parts List Chapter 3：Product description and operation 1.

  • Page 2: Chapter 1：Engineering Specification

    Chapter 1 Engineering Specification 1.0 Optical Performance Tested under 60” (diagonal) image size unless other specified. Measurement Details refer to Appendix A. 1.1 ANSI Brightness 1600 Lumens (Minimum) 1.2 Brightness Uniformity 54% (Minimum) 1.3 Contrast Ratio 1.3.1 ANSI Contrast 130:1 (Minimum) 1.3.2 FOFO Contrast 800:1 (Minimum) 1.4 Light Leakage...
  • Page 3 2.7 Lateral Color <2/3 Pixel 2.8 DMD Image Quality See Appendix D 3.0 Mechanical Specification 3.1 Dimensions Follow C109 3.2 Weight 3.2 kg 3.3 Security Slot Kensington compatible slot 150N break away force 3.5 Lens Cover Detached Lens Cover 3.6 Feet Adjustable rear foot 4.0 Packaging Detail refer to C309 (Packing Description)
  • Page 4 FCC Class B requirements, BSMI, VCCI, C-Tick CE Marks Directive 73/23/EEC; Directive 89/336/EEC; Refer to Appendix X 8.0 Reliability 8.1 MTBF 20000 hours except for DMD chip, Color wheel, Lamp and Fan 8.2 Lamp Lifetime 2000 hours (50% brightness maintenance) 9.0 Power Requirements Adhere to Appendix F 9.1 Power Supply (Normal)
  • Page 5 12.3 S-Video Input 4 pin Mini-Din (Female) Y: Luminance amplitude 1.0 V : Impedance 75Ω C: Chroma amplitude 0.268 V : Impedance 75Ω 12.4 YPbPr Input RCA jack (Green/Red/Blue) x 1 Y: Luminance amplitude 1.0 V : Impedance 75Ω PbPr/C : Chroma amplitude 0.7 V : Impedance 75Ω...

  • Page 6: Appendix A Optical Measurement

    Appendix A Optical Measurement 1.Scope: This document describes critical optical related test definitions and Instructions for data or video projectors. The other general terminologies are specified in ANSI IT7.228-1997. 2.General Requirements The unit under test should be allowed to stabilize without further adjustment for a minimum of minutes, at nominal ambient room temperature of 25°C, before making measurements.
  • Page 7 A2. BRIGHTNESS UNIFORMITY Brightness Uniformity = Minimum (L10,L11,L12,L13)/ Average (L1,L2,L3,L4,L5,L6,L7,L8,L9) A3. JBMA UNIFORMITY JBMA Uniformity = Average (L1,L3,L7,L9)/ L5 A4. ANSI CONTRAST ANSI Contrast = Average lux value of the white rectangles/Average lux value of the black rectangles Contrast Ratio shall be determined from illuminance values obtained from a black-and-white ”chessboard”...
  • Page 8 A9. THROW RATIO Throw ratio = projection distance / the width of the projected image A10. ZOOM RATIO Zoom ratio = maximum / minimum image diagonal size at a fixed projection distance A11. FOCUS RANGE The minimum/maximum focus distance is the minimum/maximum projection distance (The distance between the outermost element of projection lens and screen), expressed in meter, at which the image is still at its acceptable focus level.(acceptable focus level is specified by FOCUS LIMIT SAMPLE approved by customer)

  • Page 9: Appendix B Design Verification Test Procedure

    Appendix B Design Verification Test Procedure 1. Purpose This standard establishes the environmental specification for projector related products, which defines the level of product performance and reliability in the field. It is not necessary the intent of these specification to simulate a typical user environment, but rather to provide for a level of product robustness that when applied over a wide range of manufacturing variability and environmental usage conditions, which is recommended for product assurance testing reference.
  • Page 10 3.Test Order Atmospherics, Dynamic, and Safety test sets require separate units and can be processed in parallel. EUT testing shall be performed serially within each set. Set 1 (3 units) Set 2 (3 units) Set 3 Dynamics: Atmospherics: Safety/EMC: Package Drop Temperature/Humidity, Operating Package Vibration Temperature/Humidity, Non-operating ESD...

  • Page 11: Appendix Cdmd Image Quality

    Appendix C DMD Image Quality 1. SCOPE This document specifies the image quality requirements applicable to the DLP XGA Component Set. The Component Set provides the DLP XGA Projector with digital imaging functionality based on Digital Micromirror Device (DMD) technology. 2.
  • Page 12 2.9.1 Bond Wires Bond Wires attach the die to the superstructure. If visible, they will appear as short light parallel lines outside of the Sea of Mirrors (SOM). 2.9.2 Exposed Metal 2 Exposed Metal 2 is due to a shift in positioning of either the die or the window aperture which may allow light to be reflected off of the layer of metal 2 that is below the super structure (mirrors).
  • Page 13 Test Sequence Tests shall be run in the sequence listed in Table 1. TABLE 1. Image Quality Specification SEQ # TEST SCREEN ACCEPTANCE CRITERIA Major Dark Blemish Two Zone Blue 60 No blemish will be darker than Microsoft Blue 60 in the Critical Zone ...
  • Page 14 Figure 1. Major Blemish Two Zone Screen Non Critical Zone Critical Zone center 25%...

  • Page 15: Appendix D Electrical Specification

    Appendix D Electrical Specification E1 Timing Table The Default timing is as following: Standard 640x480 640x480 640x480 720x400 800x600 800x600 at 60Hz at 72Hz at 75Hz at 70Hz at 56Hz at 60Hz Standard Type Industry VESA VESA VESA VESA Resolution H*V 640x480 640x480 640x480...
  • Page 16 E2 Electrical Interface Character Interface Definition • 15 pin definition of the mini D-sub male for DDC1/2B protocol Definition Definition Definition Definition Red video Green Video Blue Video Monitor ID bit Red Video Green Video Blue Video Return Return Return Return +5 Volt Monitor ID bit...
  • Page 17 • RS232 Port Description Description Reserved Reserved Reserved Reserved Reserved Local Keyboard Description (Detailed description refer to SW Specification) Key Name Detailed Description Power Use this button to turn your Data Projector on and off (standby mode). Source To select input sources as Computer, Video, S-Video, YpbPr Menu (1) OSD pop-up.
  • Page 18 same time the user can use 3456 to pan the location. Zoom - In the position state, after pressing this button, a picture will reduce the picture. If the user presses this key again the picture will reduce again. At the same time the user can use 3456 to pan the location.
  • Page 19 H. Size Keystone Language Auto Image Ratio Auto Off Mirror Source Freeze Blank Magnify Lamp Reset PIP Source PIP Size PIP Position PIP H Pos PIP V Pos OSD H Pos OSD V Pos OSD Timer Source Scan Keystone Hold Mirror Hold Blank Time PIP Option...
  • Page 20 External Message indicator (Detailed description refer to SW Specification) Message Occasion PC/Composite Video /S-Video /Analog The system does not detect the signal YPbPr Searching Acquiring Signal The system is auto- adjusting Out of range The signal is over the specification Change the lamp and reset the lamp timer.

  • Page 21: Appendix E Power Supply Specification

    Appendix E Power Supply Specification F.1 Input Power Specification Specification Description Input Voltage Range The unit shall meet all the operating requirements with the range 90 ~ 264 Frequency Range The unit shall meet all the operating requirements with an input frequency range 50 Hz ~ 60 Hz Power Consumption Normal operation: 340 W (Typical)

  • Page 22: Chapter 2 Spare Parts List

    55.J3501.011 PCBA MAIN BD DX760 55.J3502.001 PCBA DMD/BD DX760 23.10084.001 FAN 12V70*70*20 SUNON GM1207P 31.J4301.081 NAME PLATE PB8220 DX760/BQ 50.J0815.001 WIRE 14P/14P 1007 #26 75MM 50.J3401.001 WIRE 2/2P 1617 #22 610MM DX66 50.J3402.001 WIRE 2/2P 1007 #24 155MM DX66 50.J3403.001 WIRE 3/3P 1617 #22 610MM DX66 60.J3407.031...
  • Page 23 ASSY UPPER CASE DX760/BQ 55.J3403.001 PCBA KEYPAD BD DX660 23.4J340.001 SPEAKER 8 OHM 3W 250MM DX660 65.J3405.011 SUB ASSY FAN*2+WIRE 200 DX760 44.J3401.002 CTN 440*435*260 DX660/BENQ 47.J3406.001 CSN RIGHT DX660 47.J3407.001 CSN LEFT DX660 27.01018.000 CORD H05VV-F 13A250V 1830MM U 27.01818.000 CORD SVT#18*3C 10A125V 1830US 27.82718.281...

  • Page 24: Chapter 3：Product Description And Operation

    Chapter 3 Production Description and Operation 1. Shipping Content The projector is shipped with the cables required for connection to standard PC or laptop computers. Carefully unpack and verify that you have all the items shown below. If any of these items are missing, please contact personnel at the place of purchase. Quick Setup Guide Warranty and Support Projector...

  • Page 25: Product Description

    2. Product Description Projector External control panel Audio/ Video connector (see next page) Projection lens Audio jack Front adjuster USB mouse connector IR remote sensor S-Video jack Ventilation grill RS 232 control port Speaker Rear adjuster feet Focus and zoom adjusters Kensington lock slot AC power cord inlet VGA signal input (PC)

  • Page 26: External Control Panel

    External Control Panel Power Lamp Indicator Turns the projector on or off. The Lamp Indicator will light up when the lamp needs service, Auto Sync cooling or replacement. See “Lamp Automatically determines the best Information” on page 25 for more picture settings for current received detailed information.

  • Page 27: Projector Features

    User’s Guide Adjuster The projector is equipped with 2 quick-release adjuster feet. Push the buttons to adjust its tilt angle. Lift the projector up and press the adjuster button to release the adjuster. The adjuster will drop into position and be locked. Projector Features The projector integrates high-performance optical engine projection and a user-friendly design to deliver high reliability and ease of use.

  • Page 28: Remote Control Description

    3. Remote Control Description Hide/ Show image Power Resync (Auto-sync) Source Menu Keystone Keystone Remote Control Effective Range The remote sensors are located on the front and the back of the projector. It can function in a range of 30 degrees horizontally and 30 degrees vertically relative to a line that is a right angle to the remote sensors.
  • Page 29 User’s Guide Replacing the Battery Push the holder Insert the new Pull out the battery into the remote battery in the holder. control. holder. Caution Avoid excessive heat and humidity. There may be danger of an explosion if batteries are incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer.

  • Page 30: Installation

    4. Installation Screen Size Place the projector at the required distance from the screen according to the desired picture size (see the table below). Projection Distance • VP6120 (XGA) screen size chart Diagonal measurement Diagonal measurement Distance from Distance from Minimum Maximum screen...
  • Page 31 User’s Guide • VP6110 (SVGA) screen size chart Diagonal measurement Diagonal measurement Distance from Distance from Minimum Maximum screen screen Minimum zoom Maximum zoom zoom zoom feet inches feet inches feet inches meters meters meters 1.96 23.5 2.40 28.7 0.49 48.9 0.60 59.9...
  • Page 32 User’s Guide Connecting to Various Equipment It only takes a few seconds to connect your projector to your desktop or notebook computer, VCR, or other systems. However, a Mac adapter is needed for connection to Macintosh computers. Computer The USB cable is not needed unless you have a remote control with mouse functions.
  • Page 33 User’s Guide Video device or VCR Output monitor Installation 15...

  • Page 34: Operation

    5. Operation Start Up Plug the power cord into the projector and into a wall socket. Turn on the main power switch. Press and hold POWER to start the unit. The back-lit POWER key flashes green and stays green when the power is turned on. Remote Control Projector (When the power is turned off, there is a 120-second cooling period before the...

  • Page 35: Digital Keystone Correction

    User’s Guide Digital Keystone Correction Keystoning refers to the situation where the projected image is noticeably wider at either the top or bottom. To correct this, press KEYSTONE (hot key) on the control panel of the projector or on the remote control, and then adjust the sliding bar labeled Keystone, as needed.

  • Page 36: Source Selection

    User’s Guide Source Selection When several input sources are available, press the SOURCE key to make a selection from the remote control or from the menu system. Remote control Projector Video and Audio Adjustments -- the Menu System On the projector or remote control, press the Menu button.

  • Page 37: Quick Tab

    User’s Guide Quick Tab FUNCTION DESCRIPTION Selects picture source. Source *The operation of this function depends on the Source Scan setting. Corrects slanted edges of the image. Keystone Adjusts picture for type of input. Picture mode Synchronizes with input signal. Auto-sync Selects proportions of the image.

  • Page 38: Adjust Tab

    User’s Guide Adjust Tab FUNCTION DESCRIPTION Brightens or darkens the image. Brightness Sets difference between light and dark areas. Contrast Adjusts timing relative to input signal. Frequency *This function is available only when the input source is PC. Adjusts synchronization to input signal. Tracking *This function is available only when the input source is PC.
  • Page 39 User’s Guide Audio Tab FUNCTION DESCRIPTION Stops audio output. Mute Changes loudness of audio Volume Changes loudness of higher frequencies. Treble Changes loudness of lower frequencies. Bass Operation 21...
  • Page 40 User’s Guide Setup Tab FUNCTION DESCRIPTION Selects language for menus. Use < / > key to select the desired lan- Language guage. Adjusts the image to match the projector placement. 1. Default 2. Ceiling mounted projection Position 4. Ceiling mounted and rear- 3.
  • Page 41 User’s Guide PIP Tab These functions are available only when the input source is PC and a video or S-video source is also connected. FUNCTION DESCRIPTION Selects an input source for the picture-in-picture. Source Selects the size of the pic- ture-in-picture.
  • Page 42 Factory OSD The way to enter factory OSD: 1. Hold press "escape" button untill the "Lamp hours info." OSD display on botton-right of screen.. 2. Press "AUTO" and "Source" buttons at the same time. 3. Factory OSD will be display. 4.
  • Page 43 Interpolation set field mode Scaling tell you what scaling mode is using now. Gray Value adjust here to check DMD fail pixel. Blue Value adjust here to check DMD fail pixel. monitor the U1 Fan speed monitor the U2 Fan speed and temperture monitor the U3 Fan speed and temperture Manual Fan Speed Manual to set fan speed...

  • Page 44: Packing Description

    6. Packing Description Component Part No. CSN RIGHT 47.J3504.00X P/N: PE BAG PEARL BAG CARDBOARD P/N:44.J3501.011 CSN LEFT 47.J3505.00X P/N: 76102.00X ASSY CABLE...
  • Page 45 UPC CODE 1. FOR CTN LBL PRINTING: vp6120 Digital Projector XGA Code 39 (1P) Product: L1596A (30P) Option: ABA (S) Serial No.:TWBYWWZZZZ Made in Taiwan 76.0 mm P/N:45.76102.001 Serial No.:TWBYWWZZZZ Form No: ACM0-0B-003-24(010918)

  • Page 46: Appearance Description

    7. Appearance Description 65.J1309.071 BCS-Y8047C 60.J3409.001 65.J3406.001 SPEC LBL P/N:40.L3303.10X MODEL LBL P/N:40.J3502.00X 42.J3415.001 Form No:ACM0-0B-003-24(010918)
  • Page 47 APPEARANCE DESCRIPTION RELEASE - vp6120 1. Spec lbl printing : 59.2 mm Complies with Canada ICES-003, Class B P/N:40.L3303.102 0 3 0 5 3 2 - 1 1 Rev.A 2. Model lbl printing : BAR CODE 39 S e r i a l N u m b e r ( S ) T W B Y W W Z Z Z Z P/N:40.J3502.001...
  • Page 48 3. LAMP LBL PRINTING 65 mm Lamp Unit: 65.J4002.001 HIGH VOLTAGE / HIGH TEMPERATURE / HIGH PRESSURE WHEN REPLACING THE LAMP, TURN OFF THE PROJECTOR AND PULL OUT THE CORD FROM THE RECEPTACLE BEFORE REPLACING THE LAMP. WAIT UNTIL THE LAMP BECOMES COOL (MINIMUM 45 MINUTES). TOUCHING THE LAMP WHEN IT IS HOT MAY CAUSE A BURN ON YOUR HAND.

  • Page 51: Lamp Replacement

    8. Lamp Replacement...

  • Page 54: Shutdown

    9. Shutdown...

  • Page 55: Rs232 Codes

    10. RS232 Codes Command List Event Packet Type command: Command Packet Header (7 bytes) Packet Payload (6 bytes) Power BE EF 02 06 00 13 CE AA 00 00 00 00 00 Auto BE EF 02 06 00 F7 C8 8E 00 00 00 00 00 Input select BE EF 02 06 00 C4 C8...
  • Page 56 S-Video / Composite Video Picture Controls Command Packet Header (7 bytes) Packet Payload (25 bytes) Brightness + BE EF 03 19 00 E9 18 03 35 02 CC CC 00 00 00 00 CC x16 Brightness - BE EF 03 19 00 87 B2 04 35 02 CC CC 00 00 00 00 CC x16 Contrast + BE EF 03 19 00 16 FC...
  • Page 57 CC CC CC CC CC CC CC CC CC CC CC CC Mid-Center BE EF 03 19 00 DE 64 01 43 02 CC CC 01 00 00 00 04 00 00 00 CC CC CC CC CC CC CC CC CC CC CC CC Mid-Right BE EF 03 19 00 4E A5 01 43 02 CC CC 01 00 00 00 05 00 00 00...

  • Page 58: Chapter 4 Circuit Operation Theory

    Chapter 4 Circuit Operation Theory 1.0 Introduction The DX760 projector uses the XGA DMD Engine made by BENQ, it includes the front-end circuitry and the video signals decoder that digitizes the input analog RGB and home video signals. Also with two stereo audio inputs, one 8-ohm 2-Watts mono audio output, one Analog D-sub output and an USB remote mouse device for general usage.
  • Page 59 2.0 System Description We can separate the all system into 4 parts, including the power supply module; the main system module; the DMD module; the Fan Control module. 2.1 Power Supply Module 2.1.1 Block Diagram 2.1.2 General Specification Input voltage: AC 90~264V Input Frequency: 47~63Hz Input power: 330W max The power circuit shall supply DC power outputs as followings:...
  • Page 60 2.1.3 Circuit Operation Theorem 2.1.3.1 EMI filter EMI components have CM inductor,DM inductor,CX1,CX2,CY1, and CY2 1. CM inductor:To be used the High μFerrite core,and the inductance is high (~mH or more 10mH) 2. DM inductor:To be used the low μ Iron poweder core ,and the inductance is lower(10uH or more 100uH) 3.
  • Page 61 2.1.3.3 Power Factor Correction The Power Factor Correction (PFC) like a Boost converter . The AC mains voltage is rectified by a bridge and the rectified voltage delivered the the boost converter . This using a switching technique ,boost the recdtified input voltage to a regulated DC output voltage Vo . The boost converter consists of a boost inductor (L) , a controlled power switch (Q) , a catch diode (D) , an output capacitor (Co) ,and a PFC controller .
  • Page 62 Flyback Circuit In a flyback converter operated in the discontinuous mode, the energy stored in the flyback transformer must be zero at the beginning and end of each switching period. During the on-time energy is stored in the transformer and energy taken from the transformer when the switching transistor turn-off, the stored energy is all delivered to the output.
  • Page 63 Voltage Feedback The seconddary referenced error amplifier control system is implemented with the TL431 . The device consists if an accurate 2.5V reference, error amplifer a, and driver . The output voltage is sensed , diveded by R5 and R6 ,and applied to the inverting of the error amplifier is internally connected to the reference voltage .
  • Page 64 LAMPEN 2K to GND Lamp Enable with optional combined Lamp Sync LAMPLIT None Lamp Lit Indication LAMPSYNC O None Lamp Sync RESETZ None System Reset signal PWRGOOD I None System Power Good 2.2.2 Sensor BD: The Sensor BD provides the color wheel index signal to DMD BD. The CWINDEX shall indicate the beginning of the red light on the DMD device.

  • Page 65: Main Board

    2.3 Main System Module 2.3.1 Main Board Below is the simple block diagram of DX760 Main Board. YC Signal NTSC/PAL/SECAM Video DSUB15 Decoder RGB Analog Signal SAA7118 CVBS Signal YUV42216bits Digital Signal DSUB15 Tripe Video 8-Pin RS232 Driver- Control Port Receiver Sp232E MacroVision...
  • Page 66 A/D-decoder (AD9883) is used for decode VGA analog signal to digital signal (RGB 888) which provide 24bit true color resolution. The input signal is analog RGB format and the YPbPr component video input, which comes from the standard VGA D_SUB connector and Video RCA jack, the analog signal input to ADC converter, which output RGB digital data stream to Image Processor.
  • Page 67 Pixelworks scaler (PW166) with x86 CPU and OSD and SDRAM are used for system control. It control hole system operation and with crucial role of this system. The CPU controls the whole system is embedded inside the Image Processor, there is also a Real Time Operating System that incorporates with the CPU as hardware layer interface.
  • Page 68 MCKEXT – Memory clock to CPU. DCKEXT – Data clock to for Scaling. I2C_SDA, I2C_SCL – I2C format data transfer line. RXD, TXD – RS232 format transfer line. EEPROM Store the system information for user friendly. . Flash Memory System software was stored in this chip, which the memory size is 4M bits. .
  • Page 69 .Power On Switch The power on switch circuit is used for 12V and VCC supplying. The Si4431DY IC is a P-Channel MOSFET with the maximum Drain – Source voltage of negative 30 volt and the maximum continuous Drain current of 5.8A at 25 ℃. .Electronic System Protection for abnormal state: The circuit of electronic system protection for abnormal state is used for the hardware light off and power off in abnormal state of thermal and safety issues.

  • Page 70: Chapter 5 Alignment Procedure

    Chapter 5 Alignment Procedure DMD Bias Voltage Alignment Equipment: None Procedure: 1. Watch DMD chip Label (Example: 9477000 0234B) 2. Switch the DIP switch on DMD board according to the red character on the DMD chip 3. 00: Color Wheel Delay Alignment Equipment: Battery Biased Silicon PIN Detector Oscilloscope...
  • Page 71 8. Then increment or decrement the value to let the waveform to be square 9. Do not adjust too much, let the signal get ahead, if it happens, go back to step 7 and do it again. 10. Change the input to pure blue and repeat the above procedures again. 11.
  • Page 72 5. Optical Engine Assembly Procedure Note: Every operator must check the dust/chip on every optical component before assembly. Stop Check Action Review Equipment Assy Hsg CW Chk Timing Tape of Assemble Color Wheel Rotate CW Screw Driver(M3) Color Wheel and Jig fixture for Color Wheel Assemble CW_Sensor Screw Driver(M2) for...
  • Page 73 Assemble Club 9 Screw Driver(M2) for club 9 Assemble Projection PL contact Screw Driver(M3) for Lens Assy HSG Assemble HSG DMD Screw Driver for HSG DMD, HSG DMD and HSG HSG_DMD CW into Rotate CW Assemble HSG CW Lower case Assemble Screw Driver for CVR_DMD_HSG...
  • Page 74 Final Check Step Screen Check Items Acceptance Criteria Equipment 1.Brightness ANSI Lumens As per C201 item 1.1 100% W Pattern Uniformity As per C201 item 1.2 2.Contrast Ratio Checker Board ANSI C/R As per C201 item 1.3 R Pattern Chromaticity Coordinate x, y As per C201 item 1.4.4 G Pattern Chromaticity Coordinate x, y...
  • Page 75 6. TV Color Alignment Procedure (A) Composite Video & S-Video Equipment: Pattern generator (VG-828) Lux meter (CL-100) OSD Default value: Item Value Item Value Brightness Brightness Bias Adjustable Contrast Contrast Bias Adjustable Sharpness Saturation Adjustable Red Gain Green Gain Blue Gain White Peak Gamma Table Linear...
  • Page 76 III. Gamma Curve: Change Timing and pattern of pattern generator: Timing: NTSC (H: 15.73 KHz, V: 29.96 Hz) Pattern: 100% blue Adjust Gamma Index and Red/Green/Blue Gamma to fit mars video gamma curve. (B) YPbPr Component: Equipment: Pattern generator (VG-828) Lux meter (CL-100) OSD Default value: Item...
  • Page 77 3. If we line the x and y, then the Pb offset is the shift action and the Pr offset is the rotational action. 4. Connect power, YPbPr Video into projector. 5. Change Timing and pattern of pattern generator: Timing: 480P (H: 31.54 KHz, V: 60.08 Hz) Pattern: Black 6.
  • Page 78 Use Lux meter to read the coordinate of black and the value note (x1,y1). Case Case Case Case x1>x0 & y1>y0 x1<x0 & y1<y0 x1>x0 & y1<y0 x1<x0 & y1>y0 Decrease Pb offset Increase Pb offset Increase Pr offset until Decrease Pr offset until x<=x0 or until x>=x0 or...
  • Page 79 Case x1>x0 & y1 > y0 : y =.331 dy=.01 1/2dy=0.005 x =.291 x =.281 y =.321 y =.316 dec. Pb dec. Pb dec. Pr x0 =.281 y0 =.311 x0 =.281 y0 =.311 x0 =.281 y0 =.311 x =.281 y =.311 x =.276 x =.301 dx=.01...
  • Page 80 Gray Level: 1. Change Timing and pattern of pattern generator: Timing: 480P (H: 31.54 KHz, V: 60.08 Hz) Pattern: gray 32 (or gray16 only for over-scan) 2. Adjust the Brightness of AD9883 (RGB) to let the black level of the gray 32 to just distinguish.
  • Page 81 Procedure: Gray Level: 1. Connect power, D-sub (or BNC), into projector. 2. Change Timing and pattern of pattern generator: Timing: 800x600@60Hz (H: 37.879Khz, V: 60.317Hz) Pattern: gray 32 3. Light on projector 4. Adjust user OSD values to default. 5. Enter factory mode. 6.
  • Page 82 8.Final Assembly Alignment Procedure Unless other specified, all alignments should meet the following conditions: 1. All power on and power off condition should be last for more than 5 minute. i.e. no power on is permitted if UUT(Unit under test) had not been power off and last for more than 5 minute since last power on.
  • Page 83 Smear Not acceptable Linearity As optical spec Jitter, Swing, Only Color Noise Snack, Ring, Acceptable Cross-talk S-Video NTSC (H: Gray 0-100% 15.73KHz, 29.96Hz, Master Pattern H&V Res. 1 Line Color Hue, Sat need correct Smear Not acceptable Linearity As optical spec Jitter, Swing, Not Acceptable Snack, Ring,...
  • Page 84 PAL (H: 15.63KHz, Gray 0-100% 25Hz, I) Master Pattern H&V Res. 1 Line Color Hue, Sat need correct Smear Not acceptable Linearity As optical spec Jitter, Swing, Not Acceptable Snack, Ring, Cross-talk YPbPr 480p (H: 31.54KHz, Gray 0-100% 60.08Hz, p) Master Pattern H&V Res.
  • Page 85 (B) PC EE Check: Equipment: Chroma 2250, CL-100 Aspect Ratio: 4:3 Channel Prime Timing Pattern Item Criteria Mode 1024*768@85Hz Gray 0-100% (68.677KHz, SMPTE 3 H&V Res. 1 Line 84.997Hz) Color Hue, Sat need correct Smear Not acceptable Linearity As optical spec Jitter, Swing, Snack, Not Acceptable Ring, Cross-talk...
  • Page 86 (43.269KHz, Master Pattern H&V Res. 1 Line 85.008Hz) Color Hue, Sat need correct Smear Not acceptable Linearity As optical spec Jitter, Swing, Snack, Not Acceptable Ring, Cross-talk 800*600@60Hz Gray 0-100% (37.879KHz, Master Pattern H&V Res. 1 Line 60.317Hz) Color Hue, Sat need correct Smear Not acceptable Linearity...
  • Page 87 Jitter, Swing, Snack, Not Acceptable Ring, Cross-talk (C) Optical Check Equipment: Chroma 2250, CL-100 Aspect Ratio: 4:3 User OSD setting: (PC), 30 gray Final Check Step Screen Check Items Acceptance Criteria Equipment 1.Brightness ANSI Lumens >=450@PC mode 100% W Pattern Uniformity >=70% 2.Contrast...
  • Page 88 Geometry Focus/Ring Stuck Bit Color Ramp Pattern Flashing Tint Phone Lady picture General Picture Quality Static pattern Flicker DVD Player (SMPTE133 Pattern) Stuck Bit 7.Video (RCA, Tint Dynamic movie (Toy S-Video) Story/ Noise Video Essential) General Picture Quality DVD Player 8.Audio Input / Output PC input...

  • Page 89: Chapter 6 Trouble Shooting

    Chapter 6 Trouble Shooting...
  • Page 91 Final Assembly Trouble Shooting Guide System Trouble Shooting Flow Char STEP: 1.Check power core Back-LIGHT OK? 2.Check power board and wire 1.Check lamp door. 2.Check thermal switch and wire 3.Check 12V Fan and wire 4.Check power board and wire 5.Check color wheel FPC Power ON OK? 6.Check screws on color wheel (LAMP ON?)
  • Page 92 1.Check DMD board Image NG? 2.Check color wheel and Sensor board (Blank) 3.Check DMD conductive elastomers 4.Check Main and Translation boards 1.Check color wheel and Sensor board Image NG? 2.Check DMD board (Screen flashing) 3.Check Main and Translation boards 1.Check DMD board Image NG? 2.Check color wheel and Sensor board (Screen dimmish)
  • Page 93 Engine Assembly Trouble Shooting Guide Start 1.chk CW 2.chk DMD/b Power On 3.chk Main/b 4.chk TR/b 1.clean DMD chip Image Quality Dust 2.clean TIR(DMD side) 1.chk lens housing / DMD Blue Edge housing Assembly 2.chk light pipe assembly 3.chk TIR assembly 4,change light pipe clip 5.change light pipe Focus NG...
  • Page 94 Main Board Trouble Shooting Guide a . IC201 bad soldiering System no b. Flash(IC201) without software inside. work c. IC607(Reset IC) function abnormal d. IC901 no work. a. Check IC609 (3.3V) or IC610(2.5V) b. Check MCLK and DCLK No data signal output to DMD a.

  • Page 95: Power Supply Trouble Shooting Guide

    Power Supply Trouble Shooting Guide CHECK SPS B/D. B1+ B- WHETHER POOR 380VDC SOLDER INPUT LINE 110VAC OR 220VAC CHECK PFC B/D. B1+ B- WHETHER POOR 154VDC SOLDER CHECK IC651 B1+ B- F651 Q651 DAMAGE R656,D651 0VDC OPEN (D.S. SHORT) BD651,R658 R678 CHECK...
  • Page 96 Translation Board Trouble Shooting Guide 7763P Translation Board Trouble Shooting Guide VCCCPU OK POWERONA 1.Q803 function OK? 2.Q703,Q704 1.Q705 VCC,12V 2.Q706 function OK? 3.Q701 4.Q702 Abnormal function IC806 LAMPEN-S 1.Q802 function OK? 2.IC805 1.Q707 LAMP_LIT 2.Q708 function OK? IR0 function 1.IC802 2.IC803...
  • Page 97 LED_1~3 , FAN_HSO IC802 function OK? 1.Q15 2.Q9 3.D8 VPOSRAIL, 4.D10 VNEGRAIL 5.U2 function 6.D12 7.D11 8.D9...
  • Page 98 DMD Board Trouble Shooting Guide...

  • Page 100: Chapter 7 Schematics And Assy Drawing

    Chapter 7 Schematics and Assy Drawing...
  • Page 101 FAN_Control Page1 FAN_Control Page1 Benq Corporation Project Code Model Name OEM/ODM Model Name DX760 99.J3577.001 Title FAN BOARD Size PCB Rev. Document Number Rev. PCB P/N <Size> 99.J3577.000-C3-304-001 48.J3513.S02 Monday, December 23, 2002 Date: Sheet Prepared By Reviewed By Approved By...
  • Page 102 MUT_OUT 0.1U FAN1_B 0.1U K FAN1_G LAMP_P LAMP-RXD Vout FANSPIN1 AD5301 3.3V_F FAN1_G FANSPIN4 SI4431DY-T1 VDD_A Benq Corporation 4.7K FANSPIN4A Project Code Model Name OEM/ODM Model Name R30 100 DOOR_LOCK LAMP-RXD DX760 99.J3577.001 0.1U M MMBT2222A R21 100 Title FANSPIN4...
  • Page 103 Screw Holes Optical Points OP10 OP11 OP12 OP13 OP14 HOLE-V8 HOLE-V8 HOLE-V8 HOLE-V8 Benq Corporation Project Code Model Name OEM/ODM Model Name DX760 99.J3577.001 Title FAN BOARD Size PCB Rev. Document Number Rev. PCB P/N <Size> 99.J3577.000-C3-304-001 48.J3513.S02 Monday, December 23, 2002...
  • Page 105 Form No: ACM0-0B-003-24 (010918)
  • Page 106 Form No: ACM0-0B-003-24 (010918)

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