BenQ G2220HD Product Service Manual
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BenQ G2220HD Product Service Manual

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See also: Service Manual , User Manual
Product Service Manual – Level II
Service Manual for BenQ:
G2220HD
P/N: 9H.L07LB.QBx
Applicable for All Regions
Version: 001
Date:2008/12/05
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 (Dec., 2008)
© Copyright BenQ Corporation 2008. All Right Reserved.
- 1 -

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  • Page 1 - For RO to input specific “Legal Requirement” in specific NS regarding to responsibility and liability statements. - Please check BenQ’s eSupport web site, http://esupport.benq.com, to ensure that you have the most recent version of this manual. First Edition (Dec., 2008) ©...

  • Page 2: Table Of Contents

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

  • Page 3: Abbreviations & Acronyms

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

  • Page 4: Introduction

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

  • Page 5: Product Overview

    3 Product Overview 3.1. Specification 3.1.1 Introduction G2220HD is defined 21.5’W LCD Monitor supports WXGA(1920x1080) resolution with DPMS (Display Power Management System) and Senseye function. There are two different input types, D-sub, DVI, of models. G2220HD adopts AUO panel, M215HW01 V0.
  • Page 6 Audio speakers supported Audio Jack (input connector) supported Earphone Jack (input connector) supported Microphone function supported Mechanical Tilt base design From -5 to +23 degree VESA wall mounting design Mechanical Rotate design Mechanical Lift base design Kensington compatible lock design 3.1.2 Operational Specification 3.1.2.1 Power supply...
  • Page 7 √ 19-pin HDMI See Note-3 For 19-pin HDMI connector Separate analog R/G/B √ Signal type For 15-pin D-sub Analog input 700 mV (peak to peak) √ Level 75 Ohms +/- 1.5 Ohms √ Impedance Separate H/V-sync √ Signal type Composite H/V-sync For 15-pin D-sub (Positive/Negative) Logic High: 2.4V ~...
  • Page 8 55-76 Hz 3.1.2.5 Plug & Play DDC2B DDC-CI Support Item Condition Spec OK N.A Remark √ DDC channel type DDC2B Refer to BenQ LS √ EDID Version 1.3 EDID definition. Refer to BenQ √ DDC-CI Version 1.1 or Later DDCCI requirement definition.
  • Page 9 3.1.2.6 Support Timings - 9 -...
  • Page 10 3.1.3 Operational & Functional Specification 3.1.3.1 Video performance *All spec. of monitor need to warm up at least 1hr. Item Condition Spec OK N. Remark Any input resolution √ Resolution modes which are under 1920 x 1080 1920x1080 Test Condition: Set Contrast at √...
  • Page 11 3.1.3.4 Environment Item Condition Spec OK N. Remark √ Operating 0 ~ +40 ℃ Temperature √ Non-operating -20 ~ +60 ℃ Non- √ Operating 10 ~ 90% condensing Humidity Non- √ Non-operating 10 ~ 90% condensing Without √ Operating 0~3048m (10,000ft) Altitude packing √...
  • Page 12 91 cm Height (MP stage) √ (3) Drop Package, Non-Operating (1 corner, 3 edges, 6 faces) Waveform: half sine Faces: sides/ Wooden package, Non- orientation √ (4) Shock Operating 3 shocks. Duration: <3ms Velocity accelerate: 75g 3.1.3.6 Electrostatic Discharge Requirements Item Condition Spec...
  • Page 13 √ (5)Dimension of box 284x60x27mm Audio Control √ (1)Volume range 0 ~100 levels √ (2)Mute On/Off 3.1.4 LCD Characteristics 3.1.4.1 The Physical definition & Technology summary of LCD panel Item Condition Spec OK N.A Remark √ LCD Panel Supplier √ Panel type of Supplier M215HW01 V0 √...
  • Page 14 3.1.5 User Controls 3.1.5.1 User’s hardware control definition Item Condition Spec OK NA Remark √ Power button √ Enter button √ Right/Inc. button √ Left/Dec. button √ Menu button(Exit button) √ Mode button √ Input Select button √ iKey button √...
  • Page 15 3.1.6 Mechanical Characteristics 3.1.6.1 Dimension Item Condition Spec OK N.A Remark √ Bezel opening 411.76*232.36 mm √ Monitor without Stand W x H x D mm 443.68*281.68*61.98mm √ Monitor with Stand W x H x D mm 443.68*342.34*61.98mm √ Carton Box (outside) L x W x H mm 504*417*134 mm Tilt: -3.5 ~ +21.5 degree...
  • Page 16 3.1.7 Pallet & Shipment 3.1.7.1 Container Specification Quantity of Products Quantity of products Quantity of pallet (sets) Stowing Type (sets) (sets) Container (Every Pallet) (Every container) (Every Container) Pallet A: 80 Pallet A: 3 Pallet B: 90 Pallet B: 19 With pallet 1950 Pallet A: 80...
  • Page 17 √ UL (USA) UL60950 3 edition CAN/CSA-C22.2 No. √ CSA (Canada) 60950 √ Nordic / D.N.S.F EN60950 √ FIMKO EN60950 √ CE Mark 73/23/EEC √ Safety IEC60950 √ EN60950 EN60950 / √ TUV/GS EK1-ITB 2000:2003 √ CCC (China) CB4943 √ GOST EN60950 √...

  • Page 18: Customer Acceptance

    3.2.1. SCOPE This document establishes the general workmanship standards and functional Acceptance criteria for LCD color monitor model G2200HD Produced by BenQ Corporation. 3.2.2. PURPOSE The purpose of this publication is to define a procedure for inspection of the LCD monitor by means of a customer acceptance test, the method of evaluation of defects and rules for specifying acceptance levels.
  • Page 19 3.2.6. 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.
  • Page 20 TEST EQUIPMENTS 1. PC with display adapter or other specific display adapter which is agreed upon by both parties 2. Test program by BenQ 3. Ruler 4. Power saving test tool 5. Minolta color analyzer ( CA-110 or BM – 7 ) 3.2.12.
  • Page 21 Description Class 3.4 Poor print of logo or name plate Major 3.5 Label on product Wrong or missing Major 3.6 Scratched or dirty but legible spec. label Minor 3.7 GAP between LCD and front bezel is over 2.0 mm Major 3.8 Dot/area discolor over 1mm dia.
  • Page 22 3.2.13. OPERATIONAL INSPECTION CRITERIA 1. TEST PATTERN 2. SPECIFICATIONS 3. OPERATIONAL INSPECTION CRITERIA 3.2.13.1. List of test pattern PATTERN TEST ITEM FULL WHITE H - Size , V – Size .Viewing Angle Light Output Impurity, Spot check Contrast Ratio Brightness adjust Range DARK Background, Spot check FULL W , R , G , B...
  • Page 23 3.2.13.2. Video performance Item Condition Spec OK N.A Remark 195 MHz/ Analog √ Max. support Pixel rate 165MHz / DVI Both for analog and √ Max. Resolution 1920x1080@60 digital inputs 1920 x 1080 @ <12 ns 60Hz √ Rise time + Fall time (50% of minimum pixel (max.

  • Page 24: Level 1 Cosmetic / Appearance / Alignment Service

    4. Level 1 Cosmetic / Appearance / Alignment Service Software / Firmware Upgrade Process 4.1.1 Hardware Requirement: 1. I2C board x 1 (a.Print Board b. I2C Board) 2. DSUB VGA cables x 2 3. Printer cable (with one male connector and another female connector) x 1. 4.
  • Page 25 Link “I2C BD, Power cable and Signal cable 4.1.2 Software prepare 1. Writer_t9.exe Step 1: Press NOVATEK Tool Step 2: Choose Load File - 25 -...
  • Page 26 Step 3: Click the “Bank” and Find the F/W Step4: Choose “Auto” run the program Step6: Check result. If the words showed in red, need to run the program again - 26 -...
  • Page 27 4.1.3 EDID Upgrade Procedure Step 1: Run the program “Q-EDID-V016.exe”, when the UI popped up Note: If “VGA” choose 128bytes, and “HDMI” choose 256bytes - 27 -...
  • Page 28 Step 2: Click “Open File” and select “VGA” or “HDMI” EDID file Step 3: If load file is successful, it shows “Open EDID Table OK.” And then, Click “Write EDID” button to update EDID - 28 -...
  • Page 29 Step 4: If write EDID is successful, it shows ”Write EDID OK …” And then, click “Read EDID” button to check if successful or not. Step 5: If read EDID is successful, it shows” Read EDID OK …” - 29 -...

  • Page 30: Alignment Procedure (For Function Adjustment)

    4.2. Alignment procedure (for function adjustment) A. Preparation: Setup input timing ICL-605( 1280x1024@75Hz ), Pattern:5-Mosaic. Setup unit and keep it warm up at least 30 minutes. B. Timing adjustment: 1. Enter factory setting area (press “ENTER”, “MENU” and then press “SOFTPOWER”). 2.
  • Page 31 D. Color adjustment: 1. Setup input timing ICL-605, white pattern. 2. Confirm auto color adjustment had already done. 3. Measure color temperature by Minolta CA-110 (or equivalent equipment). 4. Check the color temperature Bluish, Reddish & Normal. The color temperature specification as follows: White Balance 0.283+(-) 0.015...
  • Page 32 F. Command definition : PC Host will send 0x7C IIC slave address and then following 4 bytes command Byte Byte I2C Send Command Byte1 Byte4 OK NA Remark 55 Data cksum √ Write data to MCU RAM Write Contrast to MCU RAM and update the related 56 Data cksum √...
  • Page 33 96 Data cksum √ Write OSD-Vpos to EEPROM (Also Update MCU RAM) 1=English, 3=French, 0=Deutsch, 4=Italian, 2=Spanish, 5=JAPAN, 6=繁中, 7=簡中 8=Hungarian, 9=Serbian, 0A=Russian, 0B=Dutch, 0C=Polish, 0D=Czech, 0E=Swedish, 0F=Portugese, 97 0~17 cksum √ Write Language to EEPROM 10=Romanian 98 Data cksum √ Write EEPROM OSD Timer 99 Data cksum √...
  • Page 34 1=C1/9300/Bluish, 2=C2/6500/sRGB/, 3=C3/5800/Reddish, 4=User, 5=Cx XX cksum √ Read C/T index from EEPROM XX cksum √ Read OSD-Hpos EEPROM XX cksum √ Read OSD-Vpos from EEPROM 1=English, 3=French, 0=Deutsch, 4=Italian, 2=Spanish, 5=JAPAN, 6=繁中, 7=簡中 8=Hungarian, 9=Serbian, 0A=Russian, 0B=Dutch, 0C=Polish, 0D=Czech, 0E=Swedish, 0F=Portugese, 10=Romanian XX cksum √...
  • Page 35 √ Set luminance sensor mode to Dim XX cksum 23 Data cksum √ Increase ADC R-Offset2 24 Data cksum √ Increase ADC G-Offset2 25 Data cksum √ Increase ADC B-Offset2 33 Data cksum √ Increase ADC R-Gain 34 Data cksum √ Increase ADC G-Gain 35 Data cksum √...
  • Page 36 EEPROM Bank R/W (For Debug using only, not for Production Line Write EEPROM directly) Addr XX cksum √ Read EEPROM Bank 0 Addr XX cksum √ Read EEPROM Bank 1 Addr √ Read EEPROM Bank 2 XX cksum (For 24C08 type) Addr √...

  • Page 37: Level 2 Disassembly /Assembly Circuit Board And Standard Parts Replacement

    5. Level 2 Disassembly /Assembly Circuit Board and Standard Parts Replacement 5.1. Exploded View - 37 -...
  • Page 38 * This Service BOM is subject to change. Please check it on eSupport and SPO system before service parts order release - 38 -...

  • Page 39: Disassembly /Assembly

    5.2. Disassembly /Assembly 5.2.1 Disassembly SOP Preparation before disassemble 1. Clean the room for disassemble 2. Identify the area for monitor 3. Check the position that the monitors be placed and the quantity of the monitor; prepare the area for material flow;...
  • Page 40 Turn over the monitor ,dismantle the Rear cover from the monitor(if it have earphone function, pull the earphone wire out of the connector) Pull the c/b wire out of the c/b connector. Tear off the C/B wire from panel ,move away C/B and button Tear off the big aluminum foil.
  • Page 41 Tear off the two acetic tapes (if it have that ) Pull out the light wires from connector . Disassemble the SHD Tear off all the tapes sticked on the BKT (including aluminum foils and acetic tapes ) - 41 -...
  • Page 42 Tear off the yellow tape on the LVDS FFC ,and pull LVDS FFC out off the panel . Disassemble the hexangular screws ( four or two ) Turn over the BKT , and Screw-driver disassemble the power board and I/F board .---- - 7 screws Pull out the connector - 42 -...
  • Page 43 5.2.2 Assembly SOP Preparation before assemble 1. Clean the room for work 2. Identify the area for material 3. Prepare the implement, equipments, material as bellow: 5) Press-fixture 6) working table 7) Screw-driver 8) knife*1 5) glove 6) cleaning cloth 7) ESD protection picture Operation...
  • Page 44 Turn over the bkt, and Screw lock the hexangular driver:5+0.6kg screws ( four or two ) Lock SHD on the BKT ,to fixup the P/B Insert LVDS FFC in the panel Fetch yellow tape, and stick it on the LVDS Use location location tool ,location the bkt on...
  • Page 45 Stick tapes follow standard: One tape stick on left side ,one on angel side Insert light wires ,and make sure it connect well . Stick big aluminum foil on the side (like left PIC) Fetch bezel ,and put panel into bezel (don’t touch the LCD screen.
  • Page 46 Fetch cover ,cover the monitor . First cover bottom ,then cover two sides ,last cover the angel side . Assay stand .(follow Screw driver : picture on left .) put 7.5+0.5kg hinge in front cover ,and lock four screws, then cover the back cover ,last put the clip in front cover.

  • Page 47: Shielding Position

    Point A dimension Point B dimension Point C dimension BenQ G900HD 56.69mm 40mm 40mm BenQ G2220HD 84mm 44.5mm 44.5mm BenQ G2020HD 69mm 42mm 42mm BenQ G2410HD AUO 78.65mm 57.2mm 57.2mm BenQ G2410HD CMO 72.65mm 55.85mm 55.85mm BenQ T2200 56.69mm 40mm 40mm AL-Tape L Shape Tooling - 47 -...

  • Page 48: Packing

    5.4. Packing - 48 -...

  • Page 49: Block Diagram

    Block diagram G2220HD consists of a head and a stand (base). The head consists of a LCD module with 4 lamps, a power board (include AC/DC, inverter power), a control board, a power key board, and an interface BD. The block diagram is shown as below.

  • Page 50: Trouble Shooting Guide

    5.6. Trouble Shooting Guide 5.6.1 No Display or display is unstable on analog or digital port: 5.6.1.1 Interface Board: No picture or picture unstable on analog port and DVI port Power off Turn on power Plug the cable then turn Does cable plugs in connector? on power again Does power stable?
  • Page 51 5.6.2 BUTTON Function: 5.6.2.1 Control Board OSD is not working Plug control BD then retry Is control BD connecting? Is bottom key normally? Replace control BD then retry Replace Control BD Is OSD working?? Check Interface BD 5.6.3 OSD Function: OSD doesn’t work Is control BD working? Replace control BD...
  • Page 52 5.6.4 Power no work troubleshooting 5.6.4.1 DC/DC converter - 52 -...
  • Page 53 5.6.4.2 AC/DC converter - 53 -...
  • Page 54 5.6.4.3 Inverter - 54 -...

  • Page 55: Circuit Operation Theory

    5.7. Circuit Operation Theory A-1.) Interface board diagram: (a) Circuit operation theory: A basic operation theory for this interface board is to convert analog signals of Red, Green and Blue to digital signals of Red, Green and Blue, and to provide DVI port equipped with HDCP key, for receiving DVI signal to generate high quality image.
  • Page 56 (3) Serial Flash: It controls all the functions of this interface board, just like the OSD display setting, the adjustable items, adjusted data storage, the external IIC communication, support DDC2BI. (4) DDC (Display Data Channel) function: We use DDC IC to support DDC2BI function and connected to analog SDA/SCL for analog DDC data.
  • Page 57 #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) C605 150U 450V <Spec> GSIB4A60-LF BD601 R605 Fig. 3 #3 Switching element and Isolation power transformer When the Q601 turns on, energy is stored in the transformer.
  • Page 58 #4 Rectifier and filter D701 and C703 C704 are to produce DC V-INVERTER output. (See Fig.5) D702 and C707 C708 are to produce DC +5V output. IC701 and C709 C712 are to produce DC +3.3V output.(DC to Dc convert) C701 C710 R701 1000P K...
  • Page 59 #5 PWM Controller The TEA1530(A)T can be used in Fixed Frequency converter designs for low voltage, high current applications. At low power (standby) levels, the system operates in cycle skipping mode which minimizes the switching losses during standby. The proprietary high voltage BCD800 process makes direct start-up possible from the rectified universal mains voltage in an effective and green way.
  • Page 60 #6 Feedback circuit PC123 is a photo-coupler and TL431 is a shunt regulation. They are used to detect the output voltage change and be the primary and secondary isolation. When output voltage changes, the feedback voltage will be compared and duty cycle will be decided to control the correct output voltage.
  • Page 61 Pin Assignment of OZ9933 C805 PC805 0.047U K +5VDDA R803 10 J C803 47U 50V IC801 <Spec> NDR1 NDR2 PDR1 GNDP C806 VDDA PDR2 R804 100K ZD803 C804 0.047U K TZMC6V2 1U K R806 TIMER GNDA 82K F OZ9933 C807 C817 R828 1U K...
  • Page 62 Full-Bridge Configuration ZD801 R802 R801 C801 5.1K ZD802 TZMC6V2 5.1K 470U 35V TZMC6V2 Q801 RC1820 C805 0.047U K C827 4.7U M T801 C828 4.7U M C829 R811 15P J Q802 C806 C830 15P J 0.047U K 1J.26051.041 R812 Fig. 2 The full-bridge switch is configured such that Q801 N-MOS and Q802 P-MOS are ON while Q801 P-MOS and Q802 N-MOS are OFF in a half-cycle.

  • Page 63: Feedback Circuit

    Feedback Circuit TP801 CN801 TP802 R831 C819 5PF D D801 2K62272102 BAV70 R815 R819 2.2K 100K C838 R841 0.1U C820 470P J R820 20K F TP803 CN802 T801 TP804 C821 5PF D R832 2K62272102 C829 C821-2 15P J R821 100K R816 C830 C822...

  • Page 64: Appendix 1 – Screw List / Torque

    Appendix 1 – Screw List / Torque STANDARD SCREW TORQUE SPEC. MOUNTING TORQUE HOLE SIZE Screw ITEM DESCRIPTION MATERIAL (KG-CM) (MM) Head Metal; 8F.205B4.019 SCRW MACH HEX #4-40*0.3" N D-SUB;DVI 5.0±0.6 #4-40 Connector 5.0±0.6 Metal Side mount: 3±0.6 8F.5A224.6R0 SCRW MACH FLATM3*0.5P*6L ZN Metal to metal M3*0.5 Other: 4±0.6...
  • Page 65 MOUNTING TORQUE HOLE SIZE Screw ITEM DESCRIPTION MATERIAL (KG-CM) (MM) Head Metal 8F.1B524.3R0 SCRW MACH PAN W/SPG M3*3L NI Metal to metal M3*0.5P Plastic to metal Metal SCRW MACH FLAT M3*4L NI(W2407 8F.5A524.4R0 Metal to metal M3*0.5P lift Plastic to metal Metal 8F.00573.5R0 SCRW TAP FPHM3*5 B-ZN M3*0.5P...

  • Page 66: Appendix 2-Physical Dimension Front View And Side View

    Appendix 2-Physical Dimension Front View and Side view Fig. 1 Physical Dimension Front View and Side view - 66 -...
  • Page 67 Fig. 2 Appearance Description - 67 -...

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