BenQ Q7T3-FP737S Service Manual

BenQ Q7T3-FP737S Service Manual

Dual function lcd monitor
Table of Contents

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Q7T3-FP737S Dual function LCD Monitor Service Guide
1. Alignment procedure (for function adjustment)
A. Preparation:
1. Setup input timing ICL-605, 32-Grays pattern.
2. Setup unit and keep it warm up at least 30 minutes.
B. Timing adjustment:
1. Enter factory setting area (press "ENTER", "EXIT" and then press "SOFTPOWER").
2. Check the settings to following values:
Then, turn off the monitor power.
3. Turn on power enter user area.
C. Color balance adjustment:
1. Enter factory setting area (press "ENTER", "EXIT" and then press "SOFTPOWER").
2. Setup input timing ICL-605 (1280*1024 75Hz), 5-MOSAIC pattern.(timing 202 pattern 42)
3. Press"I-key",to enter window for whitebalance and burning mode.
4. Press "Whitebalance", to Calibrate ADC.
5. Setup input timing ICL-605, 32 -Gray pattern.
6. Checking if the picture is no good, reject this monitor.
D. Color adjustment:
1. Setup input timing ICL-605, white pattern.
2. Measure color temperature by Minolta CA-110 (or equivalent equipment).
3. Alignment the color temperature Bluish, Reddish & sRGB. The color temperature
specification as follows:
White Balance
(Bluish, 9300K set on OSD)
White Balance
(Reddish, 5800K set on OSD)
White Balance
(sRGB, 6500K set on OSD)
Contrast = 50
Brightness = 90
Volume = 30
OSD time = 20
Color = sRGB
Language = English
X+-
Y+-
X+-
Y+-
X+-
Y+-
Confidential

Alignment Procedure

0.283+(-) 0.03
0.297+(-) 0.03
0. 326+(-) 0.03
0. 342+(-) 0.03
0. 313+(-) 0.03
0. 329 +(-) 0.03
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Summary of Contents for BenQ Q7T3-FP737S

  • Page 1: Alignment Procedure

    Q7T3-FP737S Dual function LCD Monitor Service Guide Alignment Procedure 1. Alignment procedure (for function adjustment) A. Preparation: 1. Setup input timing ICL-605, 32-Grays pattern. 2. Setup unit and keep it warm up at least 30 minutes. B. Timing adjustment: 1. Enter factory setting area (press “ENTER”, “EXIT” and then press “SOFTPOWER”).
  • Page 2 Q7T3-FP737S Dual function LCD Monitor Service Guide Alignment Procedure 4. Turns off the monitor power. E. Writing EDID file: 1. Setup a PC with DDC card. 2. Connect PC to monitor with a D-sub signal cable. 3. Please refer to the C212 for the correct EDID file.
  • Page 3 Q7T3-FP737S Dual function LCD Monitor Service Guide Alignment Procedure F. Command definition: PC Host will send 0x7C IIC slave address and then following 4 bytes command I2C Send Command Byte1 Byte2 Byte3 Byte4 Write Contrast Data checksum Write Brightness Data...
  • Page 4 Q7T3-FP737S Dual function LCD Monitor Service Guide Alignment Procedure User mode to factory mode checksum Auto Color (Offset1, Offset2, Gain) checksum Factory mode to User mode checksum Clear user area data checksum On burn in mode checksum Off burn in mode...
  • Page 5 Q7T3-FP737S Dual function LCD Monitor Service Guide Alignment Procedure Read EEPROM Contrast checksum Read EEPROM Brightness checksum Read EEPROM C/T Point checksum Read EEPROM OSD-Hpos checksum Read EEPROM OSD-Vpos checksum Read EEPROM Language checksum Read EEPROM OSD Timer checksum Read EEPROM Volume checksum Additional define for OEM model, for reference only.
  • Page 6 Q7T3-FP737S Dual function LCD Monitor Service Guide Alignment Procedure 2. Dressing A. Check the 4 springs and 5 spacers on the BKT B. Connect 2 with 1 then connect to connector 3 Confidential...
  • Page 7 Q7T3-FP737S Dual function LCD Monitor Service Guide Alignment Procedure C. Fix DVI BD with spacers D. Place I/F BD and SPS BD in the BKT E. Screws on the interface & power board(toltal 10 screw) Confidential...
  • Page 8 Q7T3-FP737S Dual function LCD Monitor Service Guide Alignment Procedure Confidential...
  • Page 9 Q7T3-FP737S Dual function LCD Monitor Service Guide Alignment Procedure F. Plastic fixture on the interface board and place D-sub cover G. Screw D-SUB cover on the BKT: Confidential...
  • Page 10 Q7T3-FP737S Dual function LCD Monitor Service Guide Alignment Procedure H. Two gaskets at the bottom of BKT I. Taping LVDS FFC on the panel: Confidential...
  • Page 11 Q7T3-FP737S Dual function LCD Monitor Service Guide Alignment Procedure J. Place BKT on the panel and fasten FFC with I/F BD K. Place an iron cover and screw it on BKT Confidential...
  • Page 12 Q7T3-FP737S Dual function LCD Monitor Service Guide Alignment Procedure L. Two screws on panel right side M. Two screws on panel left side Confidential...
  • Page 13 Q7T3-FP737S Dual function LCD Monitor Service Guide Alignment Procedure N. Paste aluminum tape on the backlight wire hole O. Spring on control board and fix CTRL BD on BZL Confidential...
  • Page 14 Q7T3-FP737S Dual function LCD Monitor Service Guide Alignment Procedure P. Contorl board 9pin wire dressing Q. Screw up uppercase with 5 screw Confidential...
  • Page 15 Q7T3-FP737S Dual function LCD Monitor Service Guide Alignment Procedure R. Screw column with uppercase with 2 screw Confidential...
  • Page 16: Circuit Operation Theory

    Q7T3-FP737S Dual function LCD Monitor Service Guide Circuit Operation Theory I. Introduction: The Q7T3-FP731-D is a 17” SXGA (1280x1024) , 262 K colors(R, G, B 6-bit data) TFT LCD monitor with multi-media function. It’s an Dual (analog and digital) interface LCD monitor with a 15 pins D-sub signal cable and a 24pins DVI-D cable .
  • Page 17 Q7T3-FP737S Dual function LCD Monitor Service Guide Circuit Operation Theory Clock MTV312M Generator 64(AJ) 140MHz D-SUB 140MHz DVI-D Single Link 1280×1024 TMDS Mst 8131B Keypad Confidential...
  • Page 18 Q7T3-FP737S Dual function LCD Monitor Service Guide Circuit Operation Theory (a) Circuit operation theory: A basic operation theory for the interface board is to convert input signal into digital RGB . Analog RGB signal is converted to digital signal through ADC. DVI-D signal is converted through TMDS receiver.
  • Page 19 Q7T3-FP737S Dual function LCD Monitor Service Guide Circuit Operation Theory A-2.) Power board diagram: EMI Filter Rectifier and Isolation power Rectifier and filter Audio Amp and filter transformer Pre-Amp Inverter circuit PWM controller Switching element Rectifier and filter LDO regulator Feedback Isolation Fig.1...
  • Page 20 Q7T3-FP737S Dual function LCD Monitor Service Guide Circuit Operation Theory #2 Rectifier and filter AC Voltage (90-264V) is rectified and filtered by BD601, C605 (See Fig 3) and the DC Output voltage is 1.4*(AC input). (See Fig.3) Fig. 3 Confidential...
  • Page 21 Q7T3-FP737S Dual function LCD Monitor Service Guide Circuit Operation Theory #3 Switching element and Isolation power transformer When the Q601 turns on, energy is stored in the transformer. During Q601 turn-off period, the stored energy is delivered to the secondary of transformer. R607, C607 and D601 is a snubber circuit. R615 is current sense resistor to control output power.
  • Page 22: Feedback Circuit

    Q7T3-FP737S Dual function LCD Monitor Service Guide Circuit Operation Theory #5 PWM Controller The PWM controller NCP1200A implements a standard current mode architecture. With an internal structure operating at a fixed 40KHz. Where the switch time is dictated by the peak current set-point. When the current set-point falls below a given value.
  • Page 23 Q7T3-FP737S Dual function LCD Monitor Service Guide Circuit Operation Theory A-3.) Control board introduction: The main parts of the control board are a push button, and a LED. (a) Push button: It’s a simple switch function, pressing it for “ON” to do the auto adjustment function, releasing it for “OFF”...
  • Page 24 Q7T3-FP737S Dual function LCD Monitor Service Guide Circuit Operation Theory A-4.) Inverter diagram: Block Diagram: ON/OFF OSCILATOR TRANSFORMER CCFL 15Vin switching CIRCUIT ON/OFF PWM CONTROLLER PROTECTION TL1451 CIRCUIT AND DETECT BRT_ADJ 2. General Specification Input Voltage: 15V Input Current: 2A max.
  • Page 25 Q7T3-FP737S Dual function LCD Monitor Service Guide Circuit Operation Theory 3.Circuit Operation Theorem 3.1 ON/OFF SWITCH The turn-on voltage was controlled by R756 and R757.The inverter was turned on or off by the switching transistors Q761 and Q757, Also regulator IC751 is control by Q761 and Q757 decide supply 15V to inverter part or instead.
  • Page 26 Q7T3-FP737S Dual function LCD Monitor Service Guide Circuit Operation Theory 3.2 PWM Control circuit TL1451 is a dual PWM controller.C765 and R765 decide the working frequency.BLT_ADJ signal is from control board, control pulse width then decide how much energy delivery to CCFL also decide CCFL brightness. Q741 and Q742 be the buffer to rise the drive capability and the totem poles circuit can improve a capable of driving for Q743.C770 decide...
  • Page 27 Q7T3-FP737S Dual function LCD Monitor Service Guide Circuit Operation Theory 3.3 Oscillator Circuit Royer circuit uses the characteristic of transformer saturation to oscillate. When the DC power inject, Q759 or Q760 will turns on, and the current Ic increases. After a period, the transistor will leave the saturation status and Vce increase.
  • Page 28: Table Of Contents

    Q7T3-FP737S-Dual function LCD Monitor Service Engineering Specification Table of Contents 1. Introduction ...........................4 2. Operational Specification ......................4 2.1 Environment..........................4 2.1.1 Temperature ..............................4 2.1.2 Relative Humidity ............................5 2.1.3 Altitude ................................5 2.2 Transportation ..........................5 2.2.1 Vibration Test (Package, Non-Operating) ....................5 2.2.2 Drop Test (Package, Non-Operating) ......................5...
  • Page 29: Q7T3-Fp737S-Dual Function Lcd Monitor Service

    Q7T3-FP737S-Dual function LCD Monitor Service Engineering Specification Table of Contents 3.3 Number of display colors: ......................13 3.4 Adjustment function ........................13 3.5 Power Supply Requirements.......................13 3.5.1 Input Power Requirements ..........................13 3.5.2 Output Power Requirement ..........................14 3.5.3 Power Management ............................14 3.6 Specification of Inverter......................14 3.7 Panel optical Characteristics ......................15...
  • Page 30 Q7T3-FP737S-Dual function LCD Monitor Service Engineering Specification Table of Contents 6.2 Mean Time to Repair........................19 6.2.1 Module Level: ..............................19 6.2.2 Component Level: ............................19 6.3 Accessibility ..........................19 6.3.1 General: ................................19 6.3.2 Outside Cabinet, access to the following elements ..................19 6.3.3 Cover Removal, Access ..........................19...
  • Page 31: Introduction

    Q7T3-FP737S-Dual function LCD Monitor Service Engineering Specification 1. Introduction This specification describes a 17.0” color TFT LCD monitor which is supported by dual(analog and DVI) interface solution and support maximum resolution 1280x1024 at 76 Hz refresh rate. No speakers are expected. Besides, tilt and wall mount function are equipped.
  • Page 32: Relative Humidity

    Q7T3-FP737S-Dual function LCD Monitor Service Engineering Specification 2.1.2 Relative Humidity -Operating 10 to 90% Max. ( non-condensing) -Storage 5 to 95% Max. ( non-condensing) 2.1.3 Altitude -Operating 0 to 3,048m (12,000ft) -Storage 0 to 12,192m (40,000ft) 2.2 Transportation 2.2.1 Vibration Test (Package, Non-Operating)
  • Page 33: Vibration Test (Unpackaged, Non-Operating)

    Q7T3-FP737S-Dual function LCD Monitor Service Engineering Specification B) Drop Sequence 1. Top Surface 2. Front 3. Bottom Manufacturing 4. Rear joint 5. Right 6. Left -Corner 5-3-2 select at weakness side [the low left(or right) corner of the front panel]...
  • Page 34: Packing Configuration

    Q7T3-FP737S-Dual function LCD Monitor Service Engineering Specification Duration : 3ms Acceleration(G) : 75G 2.3 Packing Configuration 2.3.1 Container Specification a. Shipping Container 20'*8'*8'6 Container Type 40'*8'*8'6" Steel 40'*8'*9'6" " Steel High Cube Steel Gross 24,000 30,480 30,480 Weight (Kegs) Tare...
  • Page 35: Carton Specification

    Q7T3-FP737S-Dual function LCD Monitor Service Engineering Specification Volume (Cubic Meter) 2.3.2 Carton Specification Product Weight (Kegs) Gross Length Carton Interior Width Measurement (mm) Height Length Carton External Width Measurement (mm) Height 2.3.3 Pallet Specification a. Dimension Pallet D Transport Type...
  • Page 36: Electrostatic Discharge Requirements

    Q7T3-FP737S-Dual function LCD Monitor Service Engineering Specification Pallet B: 84 Pallet B: 14 2.4 Electrostatic Discharge Requirements The subject product must withstand 8 KV for contact discharge and 15 KV for air discharge of Electrostatic Discharge and meet the acceptance criteria as specified IEC 801-2 .
  • Page 37: Environment Protection Design

    Q7T3-FP737S-Dual function LCD Monitor Service Engineering Specification Plastic weight > 25g shall be marked in accordance with ISO11469 3) Variety of Plastic: Type of plastic material is synonymous with the term basic polymer used in ISO1043-1. For blends of plastics e.g.
  • Page 38: Video Signals

    Q7T3-FP737S-Dual function LCD Monitor Service Engineering Specification 14 V SYNC 15 SCL (2) DVI (digital signal input) 24 pins DVI connector is designed to match with DVI-digital signal cable. The pin assignment of this connector is as the following: * 24 pins DVI female...
  • Page 39 Q7T3-FP737S-Dual function LCD Monitor Service Engineering Specification 640x480 31.47(N) 60.00(N) 25.18 1280x1024 640x480 35.00(N) 67.00(N) 30.24 Macintosh 640x480 37.86(N) 72.80(N) 31.5 VESA 640x480 37.50(N) 75.00(N) 31.5 VESA 800x600 37.88(P) 60.32(P) 40.00 VESA 800x600 48.08(P) 72.19(P) 50.00 VESA 800x600 46.86(P) 75.00(P) 49.50...
  • Page 40: Number Of Display Colors

    Q7T3-FP737S-Dual function LCD Monitor Service Engineering Specification plug in PC. (6) OSD will show “Out of Range” message on the screen to indicate it while input display mode meet the following condition (a) The resolution is large than 1280x1024. (b) The resolution is 1280x1024 but it frequency of vertical sync (Fv) is large than 77Hz.
  • Page 41: Output Power Requirement

    Q7T3-FP737S-Dual function LCD Monitor Service Engineering Specification 3.5.2 Output Power Requirement The power circuit shall supply DC power outputs as followings: Output Nominal Regulation Load Current Range 5V-panel ±10% 0 ~ 1.0A 3.3V-Fix ±5% 0 ~ 1.0A 3.5.3 Power Management...
  • Page 42: Panel Optical Characteristics

    Q7T3-FP737S-Dual function LCD Monitor Service Engineering Specification 3.7 Panel optical Characteristics Item Unit Conditions Min. Typ. Max. Horizontal (Right) CR = 10 (Left) Vertical (Up) CR = 10 (Down) Viewing Angle [degree] Horizontal (Right) CR = 5 (Left) Vertical (Up)
  • Page 43 Q7T3-FP737S-Dual function LCD Monitor Service Engineering Specification Measurement is done on position 1. Viewing angle origine is the axis normal to the flat panel. Left (L) and Right (R) value are the maximum angles for which CR=10. Up (U) and (D) value are the maximum angles for which CR=10.
  • Page 44 Q7T3-FP737S-Dual function LCD Monitor Service Engineering Specification FULL WHITE 184 gray level 184 gray level 0 gray level l / L x 100%= 1.2% max., L and L are brightness at location A and B A’ l / L x 100%= 1.2% max., L and L are brightness at location A’...
  • Page 45: Light Output

    Q7T3-FP737S-Dual function LCD Monitor Service Engineering Specification (2) Vertical: 270.336 mm 4.1.2 Video Performance (1) Resolution : 1280 X 1024 pixels Maximum (2) Contrast ratio : 250(Min.), 500(Typ.) (3) Response time : 16 mS(Typ.) (4)Viewing angle : Up:70 ¢X Down:70 ¢X R/L:70 ¢X (At contrast ratio >= 10) (5)CIE Coordinate: White ( 0.31, 0.33 ) +/- (0.03, 0.03) (at user mode)
  • Page 46: Installation

    Q7T3-FP737S-Dual function LCD Monitor Service Engineering Specification 6. Maintainability Specifications 6.1 General & Requirements 6.1.1 Installation: From outside of unit with standard tools and documentation provided to user. 6.1.2 Periodic Maintenance: No periodic maintenance is required. 6.1.3 Repair & Calibration:...
  • Page 47: Fig. 1 Physical Dimension Front View And Side View

    Q7T3-FP737S-Dual function LCD Monitor Service Engineering Specification Appendix 1 – Shipment Conditions ITEM State Power Brightness Contrast OSD- Timeout OSD-Language English OSD-Image size Full Screen OSD-Color temp SRGB MODE Fig. 1 Physical Dimension Front View and Side view Confidential...
  • Page 50: Trouble Shooting

    Q7T3-FP737S Dual function LCD Monitor Service Guide Trouble Shooting Q7T3_LS(FP731-DVI) TROUBLE SHOOTING GUIDE No Display or display is unstable: 1.1 Interface Board: No picture or picture unstable Power off Turn on power Does cable plugs in Check all of wire then turn on power connector? switch again.
  • Page 51: Button Function

    Q7T3-FP737S Dual function LCD Monitor Service Guide Trouble Shooting 2. BUTTON function: 2.1 Control Board OSD is not working Is control BD connecting? Plug control BD then retry Is bottom switch normally? Replace control BD then retry Replace Control BD...
  • Page 52 Q7T3-FP737S Dual function LCD Monitor Service Guide Trouble Shooting 3. OSD function: OSD doesn’t work Is control BD working? Replace control BD Check interface BD Confidential...
  • Page 53: Power Board

    Q7T3-FP737S Dual function LCD Monitor Service Guide Trouble Shooting 4. Power Board Backlight didn ' t shine IC 7 5 1 PIN 9 IS 1 4 - Check IC 7 5 1 LED shined? 1 6 V ? Plug CN7 0 1 again or PW M ex i sted? 3 .
  • Page 54 Q7T3-FP737S Dual function LCD Monitor Service Guide Trouble Shooting 5. DVI_BD DVI No picture or picture unstable Power off Turn on power Does cable plugs in Check all of wire then turn on power connector? switch again. Does power stable?
  • Page 55 Q7T3(AUO Panel) LCD Monitor Service Guide Alignment Procedure 1.Alignment procedure (for function adjustment) A. Preparation: 1. Setup input timing VGA_60Hz, Cross-Hatch (General-1) pattern. 2. The monitor power on at first time that will enter Factory OSD mode. (If not, Please press “Menu” and “Exit” plus “Power”...
  • Page 56 Q7T3(AUO Panel) LCD Monitor Service Guide Alignment Procedure White Balance 0.326+(-) 0.03 ㎡ (Reddish, 5800K set on OSD) 0.342+(-) 0.03 White Balance 0.313+(-) 0.03 ㎡ (sRGB, 6500K set on OSD) 0.329+(-) 0.03 White Balance 0.283+(-) 0.03 ㎡ (Bluish, 9300K set on OSD) 0.297+(-) 0.03 6.
  • Page 57 Q7T3(AUO Panel) LCD Monitor Service Guide Alignment Procedure Write Reddish(5800K) B-Gain Data to NVRAM Data checksum Write User R-Gain Data to NVRAM Data checksum Write User G-Gain Data to NVRAM Data checksum Write User B-Gain Data to NVRAM Data checksum Read Bluish(9300K) R-Gain data from NVRAM checksum Read Bluish(9300K) G-Gain data from NVRAM...
  • Page 58 Q7T3(AUO Panel) LCD Monitor Service Guide Alignment Procedure The Table is for alignment machine to read data from EEPROM to check if the alignment process and write data are correct. Read EEPROM Contrast checksum Read EEPROM Brightness checksum Read EEPROM C/T Point checksum Read EEPROM OSD-Hpos checksum...
  • Page 59 Q7T3(AUO Panel) LCD Monitor Service Guide Alignment Procedure Fig 2. Burn-In Mode “Off” 2.Wire Dressing a. LVDS Cable with clip...
  • Page 60 Q7T3(AUO Panel) LCD Monitor Service Guide Alignment Procedure LVDS Cable with tape . Lamp wire with clip...
  • Page 61 Q7T3(AUO Panel) LCD Monitor Service Guide Alignment Procedure d. Add 4 Pcs crew to BKT between panel grounding e. Al-Foil-Mylar on the shielding cover...
  • Page 62 Q7T3(AUO Panel) LCD Monitor Service Guide Alignment Procedure f. Spacer g. Signal cable with clip...
  • Page 63 Q7T3(AUO Panel) LCD Monitor Service Guide Alignment Procedure h. Bracket Cover i. Plug under AC socket...
  • Page 64 Q7T3(AUO Panel) LCD Monitor Service Guide Alignment Procedure j. Main Grounding Wire k. Control BD wire: conductive tape change to Clip...
  • Page 65 Q7T3(AUO Panel) LCD Monitor Service Guide Alignment Procedure l. Shielding cover: conductive tape m. Bracket with panel grounding spring...
  • Page 66 Q7T3(AUO Panel) LCD Monitor Service Guide Alignment Procedure panel grounding spring n. Ctrl BD with Add Glue a. C605...
  • Page 67 Q7T3(AUO Panel) LCD Monitor Service Guide Alignment Procedure b. C603, C604, L606, L607 c. C615...
  • Page 68 Release Notice Product System (PS) ASS'Y DRAWING-Q7T3(767S) 99.L8372.000 Subject: Part No.: Rev.: 99.L8372.000-C3-328-001 Doc. No. 99.L8372.001 Project Code: Component Part. No.: Page 1 of 1 Q7T3 Model Name: Form No: ACM0-0B-003-24(010918)
  • Page 69 Q7T3(AUO panel) LCD Monitor Service Guide Engineering Specification Table of Contents 1. INTRODUCTION........................... 3 2. OPERATIONAL SPECIFICATION ....................3 2.1 E ............................. 3 NVIRONMENT 2.2T ..........................3 RANSPORTATION 2.3 P ........................5 ACKING ONFIGURATION 2.4 E ..................7 LECTROSTATIC ISCHARGE EQUIREMENTS 2.5 S ........................
  • Page 70 Q7T3(AUO panel) LCD Monitor Service Guide Engineering Specification Table of Contents 6.4 E & T ....................... 16 QUIPMENT OOLS EQUIRED 6.5 E TCO99..........16 LECTRICAL MISSION AND NERGY AVING SUMMARY FOR...
  • Page 71: Introduction

    Q7T3(AUO panel) LCD Monitor Service Guide Engineering Specification 1. Introduction This specification describes a 17.0” color TFT LCD monitor which is supported by analog interface solution and support maximum resolution 1280X1024 at 75Hz refresh rate. It has the following features: - User controls: (a) “Power on/off”...
  • Page 72 Q7T3(AUO panel) LCD Monitor Service Guide Engineering Specification A) Sine-wave vibration for initial resonance sweeps and dwells * Sine sweep Frequency (Hz) Status 5 ~ 26.6 0.6G 26.6 ~ 50 0.016" 50 ~ 500 1.5G Sweep times: 1 sweep / Per Axis (X, Y, and Z Axis) * One major resonance dwell is required for each axis.
  • Page 73: Packing Configuration

    Q7T3(AUO panel) LCD Monitor Service Guide Engineering Specification -Corner 5-3-2 select at weakness side [the low left (or right) corner of the front panel] -An edge drop with impact on the shortest edge radiating from corner 5-3-2 -An edge drop with impact on the next shortest edge radiating from corner 5-3-2 -An edge drop with impact on the longest edge radiating from corner 5-3-2 -A flat drop with impact on the rear -A flat drop with impact on the front...
  • Page 74 Q7T3(AUO panel) LCD Monitor Service Guide Engineering Specification Useable Interior Dimension Length 5,890 12,000 12,000 (Deducted pallet (130mm Width 2,330 2,330 2,330 & Operating space 50mm) Height 2,100 2,100 2,405 b. Air Transport Container (1) Container (2) Container (3) Container Type 125"*96"*96"...
  • Page 75: Electrostatic Discharge Requirements

    Q7T3(AUO panel) LCD Monitor Service Guide Engineering Specification 1335 Width 1335 Dimension (mm) Height Length Air Transport Pallet Width Dimension (mm) Height 2.3.4 Container Carrying Capacity a. Shipping Container Quantity of products Quantity of Products Quantity of pallet Stowing Type (sets) (sets) (sets)
  • Page 76: Reliability

    Q7T3(AUO panel) LCD Monitor Service Guide Engineering Specification 2. The sample for EMI agency approval should be under dB of the limit. The production pilot run units should be under dB of the limit. The mass production units should be under 1 dB of the limit. 2.7 Reliability 1.
  • Page 77: Function

    Q7T3(AUO panel) LCD Monitor Service Guide Engineering Specification 15pin D-sub female 1 RED VIDEO 2 GREEN VIDEO 3 BLUE VIDEO 4 GROUND 5 GROUND 6 RED GROUND 7 GREEN GROUND 8 BLUE GROUND 9 PC5V 10 SYNC GROUND 11 GROUND 12 SDA 13 H SYNC (H+V) 14 V SYNC...
  • Page 78: Number Of Display Colors: 226K Color Numbers

    Q7T3(AUO panel) LCD Monitor Service Guide Engineering Specification 832X624 49.72(N) 74.55(N) 57.29 Macintosh *1024x768 48.36(N) 60.00(N) 65.00 VESA 1024x768 56.48(N) 70.10(N) 75.00 VESA *1024x768 60.02(P) 75.00(P) 78.75 VESA 1024X768 60.24(N) 74.93(N) 80.00 Macintosh 1152x864 67.50(P) 75.00(P) 108.00 VESA *1152x870 68.68(N) 75.06(N) 100.00 Macintosh...
  • Page 79 Q7T3(AUO panel) LCD Monitor Service Guide Engineering Specification 3.6 Power Supply Requirement 3.6.1 Input Power Requirements (1) Input Voltage Range The unit shall meet all the operating requirements with an input voltage range of 90~264 Vac. (2) Input Current Maximum Input Current Measuring Range (MAX) 2 Arms...
  • Page 80: Panel Optical Characteristics Note

    Q7T3(AUO panel) LCD Monitor Service Guide Engineering Specification 3.7 Panel optical Characteristics Note : Item Condition Symbol Min. Typ. Max. Unit ψ=0 ° ,θ=0 ° Contrast Ratio ψ=0 ° (CR>=10) θ Deg. Vertical Viewing Angle ψ=0 ° (CR>=10) θ Deg. Down θ=0 °...
  • Page 81 Q7T3(AUO panel) LCD Monitor Service Guide Engineering Specification 2. Contrast Ratio (CR) is defined mathematically as: Surface Luminance with all white pixels Contrast Ratio = _____________________________________ Surface Luminance with all black pixels 4. Response time TrR measures the transition time of L1 relative luminance from white to black state, from 90% to 10% (see graph below) BLACK WHITE WHITE...
  • Page 82: Back-Light Unit

    Q7T3(AUO panel) LCD Monitor Service Guide Engineering Specification 3.8 BACK-LIGHT UNIT The backlight system is an edge-lighting type with 4 CCFLs (Cold Cathode Fluorescent Lamp). The characters of dual lamps are shown in the following tables. °C Ta=25 ± 2 ITEM SYMBOL Unit...
  • Page 83: Physical Specifications

    Q7T3(AUO panel) LCD Monitor Service Guide Engineering Specification 4.1.4 Brightness Adjustment Range At contrast ratio control set at maximum level, adjusting Brightness control from minimum to maximum position, the light output of WHITE pattern shall be increased more than 40cd/ ㎡ . 5.
  • Page 84: Accessibility

    Q7T3(AUO panel) LCD Monitor Service Guide Engineering Specification 6.3 Accessibility 6.3.1 General: All panels, covers, and major assemblies are removable without disruption of permanent mounting or fasteners. 6.3.2 Outside Cabinet, access to the following elements -Operating Controls -AC Inlet -Audio in 6.3.3 Cover Removal, Access All sub assemblies and internally adjustable components may be accessed by removing the base and the rear cover .
  • Page 85 Q7T3(AUO panel) LCD Monitor Service Guide Engineering Specification Fig. 1 Physical Dimension Front View and Side view...
  • Page 86 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 99.L8372.001 Q7T3-FP767S Title INTERFACE BOARD Size PCB Rev. Document Number R ev. PCB P/N <Size> 48.L8301.S11 99.L8372.000-C2-204-004 Tuesday, February 11, 2003...
  • Page 87 AT24C02A BAV99 RX2+ RX2P DN12 DVIPC5V BAV99 RXC- RXCM DN13 BAV99 RXC+ RXCP Benq Corporation Project Code Model Name OEM/ODM Model Name 99.L8372.001 Q7T3-FP767S Title INTERFACE BOARD Size P CB Rev. Document Number R e v . PCB P/N <Size>...
  • Page 88 ROM_ADDR(4:0) USER_BITS(4:0) Available for reading from a status register ROM_ADDR5 Reserved If using 6-wire host protocol, program this bit to 0 Benq Corporation ROM_ADDR6 SCLPOL Determines polarity of HCLK signal ROM_ADDR7 HOST_PROTOCOL If using 6-wire host protocol, program this bit to 1...
  • Page 89 0.1U 0.1U 0.1U 50V Z 50V Z 50V Z 50V Z 50V Z 50V Z 50V Z OPEN OPEN Benq Corporation Project Code Model Name OEM/ODM Model Name 99.L8372.001 Q7T3-FP767S Title INTERFACE BOARD Size PCB Rev. Document Number R ev.
  • Page 90 TXCLK IN DCLK_TTL DHS_TTL DEN_TTL TXIN24 TXIN26 C100 BEAD 0.1U DVS_TTL TXIN25 16V K THC63LVDM83A Benq Corporation Project Code Model Name OEM/ODM Model Name 99.L8372.001 Q7T3-FP767S Title INTERFACE BOARD Size P CB Rev. Document Number R e v . PCB P/N <Size>...
  • Page 93 Q7T3(AUO panel) LCD Monitor Service Guide Trouble Shooting Q7T3 TROUBLE SHOOTING GUIDE No Display or display is unstable: Interface Board: No picture or picture unstable Power off Turn on power Does cable plugs in Check all of wire then turn on power connector? switch again.
  • Page 94: Osd Function

    Q7T3(AUO Panel) LCD Monitor Service Guide Trouble Shooting 2. BUTTON function: 2.1 Control Board OSD is not working Is control BD connecting? Plug control BD then retry Is bottom switch normally? Replace control BD then retry Replace Control BD Is OSD working?? Check Interface BD 3.
  • Page 95 Q7T3(AUO Panel) LCD Monitor Service Guide Trouble Shooting 4. Power Board Bac k l i g h t didn ' t s h i ne R e place Q 7 6 1 IC7 5 1 PIN 9 IS 15 V ? L E D sh i ned? Plu g CN 7 0 1 a g a in or P W M e x i sted ?
  • Page 96 Q7T3(AUO Panel) LCD Monitor Service Guide Circuit Operation Theory I. Introduction: The Q7T3-FP767 is a 17” SXGA (1280x1024) , 262 K colors(R, G, B 6-bit data) TFT LCD monitor with multi-media function. It’s an analog interface LCD monitor with a 15 pins D-sub signal cable and it’s compliant with VESA specification to offer a smart power management and power saving function.
  • Page 97 Q7T3(AUO Panel) LCD Monitor Service Guide Circuit Operation Theory Interface Board Scaling Green Blue module Vsync gm2120 Hsync (/H+V) (a) Circuit operation theory: A basic operation theory for this interface board is to convert analog signals of Red, Green, Blue. The scaling IC has internal A/D converter, internal OSD and auto detect input timing functions.
  • Page 98 Q7T3(AUO Panel) LCD Monitor Service Guide Circuit Operation Theory Rapid-lock digital clock recovery system. It also support detect mode and DPMS control. MCU 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 DDC2B.
  • Page 99 Q7T3(AUO Panel) LCD Monitor Service Guide Circuit Operation Theory Fig. 2 #2 Rectifier and filter AC Voltage (90-264V) is rectified and filtered by BD601, C605 (See Fig 3) and the DC Output voltage is 1.4*(AC input). (See Fig.3) Fig. 3...
  • Page 100 Q7T3(AUO Panel) LCD Monitor Service Guide Circuit Operation Theory #3 Switching element and Isolation power transformer When the Q601 turns on, energy is stored in the transformer. During Q601 turn-off period, the stored energy is delivered to the secondary of transformer. R607, C607 and D601 is a snubber circuit.
  • Page 101 Q7T3(AUO Panel) LCD Monitor Service Guide Circuit Operation Theory #5 PWM Controller The current mode control IC UC3842B is used to control PWM. When the VCC terminal of it gets 16V, IC601 turns on. +5V will be set up at Pin8 through soft start circuit, which includes R617, C611, D606 and D605.
  • Page 102 Q7T3(AUO Panel) LCD Monitor Service Guide Circuit Operation Theory A-4.) Inverter diagram: Block Diagram: ON/OFF OSCILATOR TRANSFORMER CCFL 15Vin switching CIRCUIT ON/OFF PWM CONTROLLER PROTECTION TL1451 CIRCUIT AND DETECT BRT_ADJ 2. General Specification Input Voltage: 15V Input Current: 2A max. ON/OFF Voltage: 3.3V PWM Duty: 3.3V/47KHz Output Requirement:...
  • Page 103 Q7T3(AUO Panel) LCD Monitor Service Guide Circuit Operation Theory 3.Circuit Operation Theorem 3.1 ON/OFF SWITCH The turn-on voltage was controlled by R756 and R757.The inverter was turned on or off by the switching transistors Q761 and Q757, Also regulator IC751 is control by Q761 and Q757 decide supply 15V to inverter part or instead.
  • Page 104 Q7T3(AUO Panel) LCD Monitor Service Guide Circuit Operation Theory 3.2 PWM Control circuit TL1451 is a dual PWM controller.C765 and R765 decide the working frequency.BLT_ADJ signal is from control board, control pulse width then decide how much energy delivery to CCFL also decide CCFL brightness.
  • Page 105 Q7T3(AUO Panel) LCD Monitor Service Guide Circuit Operation Theory 3.3 Oscillator Circuit Royer circuit uses the characteristic of transformer saturation to oscillate. When the DC power inject, Q759 or Q760 will turns on, and the current Ic increases. After a period, the transistor will leave the saturation status and Vce increase.
  • Page 106 Q7T3(CPT Panel)LCD Monitor Service Guide Alignment Procedure 1.Alignment procedure (for function adjustment) A. Preparation: 1. Setup input timing VGA_60Hz, Cross-Hatch ( General - I ) pattern. 2. The monitor power on at first time that will enter Factory OSD mode. (If not, Please press “Menu” and “Exit” plus “Power”...
  • Page 107 Q7T3(CPT Panel)LCD Monitor Service Guide Alignment Procedure White Balance 0.326+(-) 0.03 230cd/m (Reddish, 5800K set on OSD) 0.342+(-) 0.03 White Balance 0.313+(-) 0.03 230cd/m (sRGB, 6500K set on OSD) 0.329+(-) 0.03 White Balance 0.283+(-) 0.03 200cd/m (Bluish, 9300K set on OSD) 0.297+(-) 0.03 5.
  • Page 108 Q7T3(CPT Panel)LCD Monitor Service Guide Alignment Procedure Write Reddish(5800K) B-Gain Data to NVRAM Data checksum Write User R-Gain Data to NVRAM Data checksum Write User G-Gain Data to NVRAM Data checksum Write User B-Gain Data to NVRAM Data checksum Read Bluish(9300K) R-Gain data from NVRAM checksum Read Bluish(9300K) G-Gain data from NVRAM checksum...
  • Page 109 Q7T3(CPT Panel)LCD Monitor Service Guide Alignment Procedure The Table is for alignment machine to read data from EEPROM to check if the alignment process and write data are correct. Read EEPROM Contrast checksum Read EEPROM Brightness checksum Read EEPROM C/T Point checksum Read EEPROM OSD-Hpos checksum...
  • Page 110 Q7T3(CPT Panel)LCD Monitor Service Guide Alignment Procedure Fig 1. Factory Mode “On” Fig 2a. Burn-In Mode Button...
  • Page 111 Q7T3(CPT Panel)LCD Monitor Service Guide Alignment Procedure Fig 2b. Burn-In Mode “ON” 2.Wire Dressing a. RSDS Cable...
  • Page 112 Q7T3(CPT Panel)LCD Monitor Service Guide Alignment Procedure . Lamp wire with clip c. Add 4 Pcs crew to BKT between panel grounding...
  • Page 113 Q7T3(CPT Panel)LCD Monitor Service Guide Alignment Procedure d. Al-Foil-Mylar on the shielding cover e. Spacer...
  • Page 114 Q7T3(CPT Panel)LCD Monitor Service Guide Alignment Procedure f. Signal cable with clip g. Bracket Cover...
  • Page 115 Q7T3(CPT Panel)LCD Monitor Service Guide Alignment Procedure h. Plug under AC socket i. Main Grounding Wire...
  • Page 116 Q7T3(CPT Panel)LCD Monitor Service Guide Alignment Procedure j. Control BD wire: conductive tape change to Clip k. Shielding cover: conductive tape...
  • Page 117 Q7T3(CPT Panel)LCD Monitor Service Guide Alignment Procedure l. Bracket with panel grounding spring panel grounding spring m. Ctrl BD with...
  • Page 118 Q7T3(CPT Panel)LCD Monitor Service Guide Alignment Procedure Add Glue a. C605 b. C603, C604, L606, L607...
  • Page 119 Q7T3(CPT Panel)LCD Monitor Service Guide Alignment Procedure c. C615...
  • Page 120 Release Notice Product System (PS) ASS'Y Drawing 99.L8372.CBE Subject: Part No.: Rev.: 99.L8372.CBE-C3-328-001 Doc. No. 99.L8372.001 Project Code: Component Part. No.: Page 1 of 1 Q7T3 Model Name: Form No: ACM0-0B-003-24(010918)
  • Page 121 Q7T3 (CPT panel) LCD Monitor Service Guide Circuit Operation Theory I. Introduction: The Q7T3-CPT is a 17” SXGA (1280x1024) , 26.2 K colors(R, G, B 6-bit data) TFT LCD monitor without multi-media function. It’s an analog interface LCD monitor with a 15 pins D-sub signal cable and it’s compliant with VESA specification to offer a smart power management and power saving function.
  • Page 122 Q7T3 (CPT panel) LCD Monitor Service Guide Circuit Operation Theory (a) Circuit operation theory: A basic operation theory for this interface board is to convert analog signals of Red, Green, Blue. The scaling IC has internal A/D converter, internal OSD and auto detect input timing functions.
  • Page 123 Q7T3 (CPT panel) LCD Monitor Service Guide Circuit Operation Theory 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 DDC2B. 3.) EEPROM: We use 24C16 to store all the adjustable data and user settings. 4.) FLASH ROM: To stored the source code which is accessed by MCU to run program.
  • Page 124 Q7T3 (CPT panel) LCD Monitor Service Guide Circuit Operation Theory Fig. 2 #2 Rectifier and filter AC Voltage (90-264V) is rectified and filtered by BD601, C605 (See Fig 3) and the DC Output voltage is 1.4*(AC input). (See Fig.3) Fig. 3...
  • Page 125 Q7T3 (CPT panel) LCD Monitor Service Guide Circuit Operation Theory #3 Switching element and Isolation power transformer When the Q601 turns on, energy is stored in the transformer. During Q601 turn-off period, the stored energy is delivered to the secondary of transformer. R607, C607 and D601 is a snubber circuit.
  • Page 126 Q7T3 (CPT panel) LCD Monitor Service Guide Circuit Operation Theory #5 PWM Controller The PWM controller NCP1200A implements a standard current mode architecture. With an internal structure operating at a fixed 40KHz. Where the switch time is dictated by the peak current set-point. When the current set-point falls below a given value.
  • Page 127 Q7T3 (CPT panel) LCD Monitor Service Guide Circuit Operation Theory A-3.) Control board introduction: The main parts of the control board are a push button, and a LED. (a) Push button: It’s a simple switch function, pressing it for “ON” to do the auto adjustment function, releasing it for “OFF”...
  • Page 128 Q7T3 (CPT panel) LCD Monitor Service Guide Circuit Operation Theory A-4.) Inverter diagram: Block Diagram: ON/OFF OSCILATOR TRANSFORMER CCFL 15Vin switching CIRCUIT ON/OFF PWM CONTROLLER PROTECTION TL1451 CIRCUIT AND DETECT BRT_ADJ 2. General Specification Input Voltage: 15V Input Current: 2A max. ON/OFF Voltage: 3.3V PWM Duty: 3.3V/47KHz Output Requirement:...
  • Page 129 Q7T3 (CPT panel) LCD Monitor Service Guide Circuit Operation Theory 3.Circuit Operation Theorem 3.1 ON/OFF SWITCH The turn-on voltage was controlled by R756 and R757.The inverter was turned on or off by the switching transistors Q761 and Q757, Also regulator IC751 is control by Q761 and Q757 decide supply 15V to inverter part or instead.
  • Page 130 Q7T3 (CPT panel) LCD Monitor Service Guide Circuit Operation Theory 3.2 PWM Control circuit TL1451 is a dual PWM controller.C765 and R765 decide the working frequency.BLT_ADJ signal is from control board, control pulse width then decide how much energy delivery to CCFL also decide CCFL brightness.
  • Page 131 Q7T3 (CPT panel) LCD Monitor Service Guide Circuit Operation Theory 3.3 Oscillator Circuit Royer circuit uses the characteristic of transformer saturation to oscillate. When the DC power inject, Q759 or Q760 will turns on, and the current Ic increases. After a period, the transistor will leave the saturation status and Vce increase.
  • Page 132 R107 3.3V_MCU DN10 RXCM RXC- BAV99 R108 DN11 RXC+ RXCP BZV55-C5V1 BAV99 BZV55-C5V1 BZV55-C5V1 DN12 Benq Corporation D-detect Project Code Model Name OEM/ODM Model Name 99.L8372.001 Q7T3 <OEM/ODM> BAV99 DN14 Title 0.01U K INTERFACE BOARD Size PCB P/N PCB Rev.
  • Page 133 ** R28 & C33 are reserved for ESD NC/ESP GPO0 GPO0 R201 4.7P C GPO1 GPO1 4.7U 25V 14.318MHZ GPO2 GPO2 0.1U 3.3V_MCU GPO3 GPO3 Benq Corporation XOUT GPO4 GPO4 4.7P C Project Code Model Name OEM/ODM Model Name BYPASS 4.7K AVSS_LPLL <OEM/ODM> 99.L8372.001 Q7T3 0.1U Title...
  • Page 134 0.1U K 22U 25V 0.1U K 47U 25V 0.1U K 47U 25V 0.1U K 0.1U K 0.1U K 0.1U K 0.1U K Benq Corporation Project Code Model Name OEM/ODM Model Name <OEM/ODM> 99.L8372.001 Q7T3 Title INTERFACE BOARD Size P CB P/N PCB Re v.
  • Page 135 RA1P TXEC- TP59 TXEC- TXEC+ TP60 TXEC+ TXE3- TP61 GA3N TXE3+ TP62 GA3P 5V_PANEL TP63 Benq Corporation Project Code Model Name OEM/ODM Model Name <OEM/ODM> 99.L8372.001 Q7T3 C401 0.1U K Title INTERFACE BOARD Size PCB Rev. Document Number Re v.
  • Page 136 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 99.L8372.001 Q7T3 <OEM/ODM> Title INTERFACE BOARD Size PCB Rev. Document Number R ev. PCB P/N <Size> 48.L8301.S72 99.L8372.000-C3-304-006...
  • Page 137 GB2N BG1N TP138 0.1U K GB2N GB2P BG1P TP139 GB2P GB1N BG2N TP140 GB1N GB1P BG2P TP141 GB1P Benq Corporation TP142 CLKBP TP143 CLKBN BB3N BR0N TP144 Project Code Model Name OEM/ODM Model Name BB3N BB3P BR0P TP145 BB3P <OEM/ODM>...
  • Page 138 Q7T3(CPT panel) LCD Monitor Service Guide Trouble Shooting Q7T3-CPT TROUBLE SHOOTING GUIDE 1.No Display or display is unstable No picture or picture unstable Power off Turn on power Does cable plugs in Check all of wire then turn on power connector? switch again.
  • Page 139 Q7T3(CPT panel) LCD Monitor Service Guide Trouble Shooting 2. BUTTON function: OSD is not working Is control BD connecting? Plug control BD then retry Is bottom switch normally? Replace control BD then retry Replace Control BD Is OSD working?? Check Interface BD 3.
  • Page 140 Q7T3(CPT panel) LCD Monitor Service Guide Trouble Shooting 4. Power Board Backlight didn't shine Replace Q761 IC751 PIN 9 IS 15V? LED shined? Plug CN701 again or PWM existed? 3.3V existed? IS I/F board connected? checking I/F BD (BLT_ADJ) Replace new fuse Plug CN601 again or Turn on level existed? checking PW BD...

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