BenQ GW2760HS Service Manual
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BenQ GW2760HS Service Manual

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See also: User Manual
Product Service Manual – Level II
Service Manual for BenQ:
GW2760HS
P/N: 9H.L9NLB.QB*
Applicable for All Regions
Version: 001
Date:2012/12/10
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., 2012)
© Copyright BenQ Corporation 2012. All Right Reserved.
- 1 -

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Summary of Contents for BenQ GW2760HS

  • 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., 2012) ©...

  • 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://esupport.benq.com/v2 - 4 -...

  • Page 5: Product Overview

    3 Product Overview 3.1. Specification Introduction This specification describes GW2760HS, which is a 24” Green-Product with VGA+DVI+HDMI interface and earphone output color TFT LCD monitor. The monitor supports maximum resolution up to 1920x1080 with analog/digital inputs. The features summary is shown as below, * All spec.
  • Page 6 (3) 6500K mode : (x,y)= (0.313, 0.329)+/-(0.02, 0.02) (4) sRGB: (x,y)= (0.313, 0.329)+/-(0.015, 0.015) AC power input 90-264 Volts, 47-63 Hz. DC power input (with AC power adapter) No DPMS supported(Power Saving) <0.3W Power Off Mode <0.3W LED indicator for power status showed Green/Amber OSD for control &...
  • Page 7 Common: 2KV,  IEC1000-4-5 (Surge) Differential: 1KV Depends on panel source (Operation  LED operation range 90 ~ 264VAC 110mA (Typ.) with fixed driving current) Depends on panel  CCFL Frequency 90 ~ 264VAC 40KHz ~ 80KHz source Color: Black ...
  • Page 8 Note-1: The pin assignment of 15-pin D-sub connector is as below, Signal Assignment Signal Assignment Red video PC5V (+5 volt power) Green video Sync Ground Blue video Ground Ground Cable Detected H-Sync (or H+V) Red Ground V-sync Green Ground Blue Ground Note-2: The pin assignment of 24-pin DVI-D connector is as below, Signal Assignment Signal Assignment...
  • Page 9 Note-3: The pin assignment of 19-pin HDMI connector is as below - 9 -...
  • Page 10 3.1.1.3 Input Video Signal performance Requirement (for VGA) Item Condition Spec OK N.A Remark  Max. support Pixel rate Analog 205 MHz  Max. Resolution 1920 x 1080 <2.439 ns (1/205MHz)*50% =  Rise time + Fall time (50% of minimum pixel 2.439ns clock period) Refer to VESA...
  • Page 11 3.1.1.6 Support Timing Horizontal Vertical Nominal Resolution Resolution Frequency Frequency Pixel (active dot) (total dot) (KHz) (Hz) Clock (MHz) 640x480@66 640x480 35.00 66.67 30.24 640x480@60 640x480 31.47 59.94 25.17 800x600@56 800x600 35.16 56.25 36.00 800x600@60 800x600 37.88 60.32 40.00 1024x576@60 1024x576 35.82 46.966...
  • Page 12 Operational & Functional Specification 3.1.1.7 Video performance *All spec. of monitor need to warm up at least 1hr. Item Condition Spec OK N.A Remark Any input resolution  Resolution modes which are 1920 x 1080 under 1920x1080 Test Condition: Set Contrast at 50, ...
  • Page 13 3.1.1.10 Environment Item Condition Spec OK N.A Remark  0 ~ +40 ℃ Operating Temperature  -20 ~ +60 ℃ Non-operating Non-  Operating 10 ~ 90% condensing Humidity Non-  Non-operating 10 ~60% condensing Without  Operating 0~3048m (10,000ft) packing Altitude ...
  • Page 14 3.1.1.12 Electrostatic Discharge Requirements Item Condition Spec OK N.A Remark Contact: 8KV  Electrostatic Discharge IEC801-2 standard Air: 15KV 3.1.1.13 Item Condition Spec OK N.A Remark Band 1 < 10 V/m  Electric Band 2 < 1 V/m TCO 6.0 Band 1 <...
  • Page 15 3.1.1.16 Optical characteristics of LED panel AUO M270HVN02.0 PS Item Unit Conditions Min. Typ. Max. Remark [degree] Horizontal CR = 10 (Right/Left) Viewing Angle [degree] Vertical CR = 10 (Up/Down) Contrast ratio Normal Direction 1800 3000 [msec] Rising Time Response Time [msec] Falling Time [msec]...
  • Page 16  Pixel Clock  Phase Bluish Reddish Normal sRGB  Color Senseye User: Separate R/G/B adjustment Reset Color OSD Horizontal position  OSD Position OSD Vertical position  OSD Time From 5 sec to 30 sec  OSD Lock  Language 17 languages ...
  • Page 17 3.1.1.20 Weight Item Condition Spec OK N.A Remark  Monitor (Net) 4.496Kg Monitor with packing  5.9Kg (Gross) 3.1.1.21 Plastic Item Condition Spec OK N.A Remark  Flammability >ABS<,94-HB  65 ℃ Heat deflection To  UV stability Delta E < 8.0 ...
  • Page 18 Pallet & Shipment 3.1.1.23 Container Specification Quantity of products Quantity of Products Quantity of pallet Stowing Type Container (sets) (sets) (sets) (Every container) (Every Pallet) (Every Container) 626(WW) Pallet A:64 Pallet A: 4 Pallet B:80 Pallet B: 2 Pallet C:70 Pallet C: 3 Pallet A:64 Pallet A: 4...
  • Page 19 3.1.2 Certification - 19 -...

  • Page 20: Customer Acceptance

    3.2. Customer Acceptance 3.2.1 SCOPE This document establishes the general workmanship standards and functional acceptance criteria for LCD color monitor model GW2760HS Produced by BenQ Peripherals, Inc. 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 21 Critical defective A critical defective contains one or more critical and may also contain major and/or minor defects. Major defective A major defective contains one or more defects and may also contain minor defects but contains no critical defect. Minor defective A minor defective contains one or more minor defects but contains no critical and major defects.
  • Page 22 3.2.10 TEST CONDITIONS Unless otherwise prescribed, the test conditions are as follows: . Nominal mains voltage Temperature: +5~+35℃ . Warm up time: 30minutes minimum. . Visual inspection shall be down with the distance from eyes to the sample 35-50 cm. .
  • Page 23 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 1.5 mm Major 3.8 Dot/area discolor over 1mm dia. in front or over 2mm dia. in other areas Major 3.9 Cabinet warped, sagged or bulging ＞0.5% of surface length Major...
  • Page 24 3.2.13 OPERATIONAL INSPECTION CRITERIA 1. TEST PATTERN 2. SPECIFICATIONS 3. OPERATIONAL INSPECTION CRITERIA List of test pattern PATTERN TEST ITEM H - Size , V – Size FULL WHITE .Viewing Angle Light Output Impurity, Spot check Contrast Ratio Brightness adjust Range DARK Background, Spot check FULL W , R , G , B...
  • Page 25 3.2.14 PANEL INSPECTION CRITERIA Panel Description AUO M270HVN02.0 PS Model Name GW2760HS Bright Dot Single 2 Dots Dark Dot Single 5 Dots Bright Dot (Distance between two Bright 15mm Dots) Dark Dot Density (Distance between two Dark 15mm Dots )

  • Page 26: Level 1 Cosmetic / Appearance / Alignment Service

    4. Level 1 Cosmetic / Appearance / Alignment Service Software / Firmware Upgrade Process 4.1.1 Hardware Requirement: Step 1: Prepare PC with 2K or XP system, printer port cable x1 and D-sub cable x1 Step 2: Prepare ISP board and setup jumper as below. Pin 1 &2 of J5, J6, J7, and J8 are for Firmware Upgrading.
  • Page 27 Step 3: 1. Connect printer port cable between PC LPT1 and ISP board Then connect signal cable between ISP board (position 1) and monitor. 2. Power on the monitor. a. Connect the Printer Cable to the Printer Connector. b. Connect the other side to the Board c.
  • Page 28 4.1.2 Software prepare Step 1: Un-zip Port95nt and install into your computer. Step 2: Un-zip MStarISPToolv V4.5.105.zip ISP Tool Step 3: Run Program MStarISPToolv V4.5.105.exe (refer to below Picture) Step 4: Program Setting Click the button ‘Auto’, to set the ISP tool as bellow: - 28 -...
  • Page 29 Step 5: Click the button “Read” to open the firmware that will be ISP Step6: Click the button “Connect”, one cue “Device Type is xxxx” will show as bellow. If not, check connects again: - 29 -...
  • Page 30 Step7: Click the button “Run” to continue the programming. If the ISP process is successful, it will show “Pass” Step8: AC off/on, and turn on Factory Menu, and check F/W version Step7: Switch "Burnin" to off - 30 -...

  • Page 31: Ddc (Edid) Upgrade Process

    DDC (EDID) Upgrade Process 4.2.1 Software configuration: Step 1: Un-zip Port95nt and install into your computer. Step 2: Un-zip QEDID302.rar 4.2.2 Hardware configuration: Step 1: Prepare PC with 2K or XP system, printer port cable x1, and EDID cable x1 (as below) EDID cable PN: 5K.09C09.501 Step 2: Prepare ISP board and setup jumper as below Short pin1 and pin2 at J5, J6, J7, J8.
  • Page 32 Step 3: Connect printer port cable between PC LPT1 and ISP board then connect EDID cable between ISP board (position 1) and monitor. Connection: - 32 -...
  • Page 33 4.2.3 EDID programming procedure: Attention (For writing VGA EDID only) Note1. Before running QEDID302.exe, please press on “PLUS”, “MINUS” and “Power” buttons at the same time to enter factory mode to turn “burn in” ON. a. If “burn in” is on, please turn “burn in” off first, then, turn “Burn in” ON b.
  • Page 34 Step 2: Click “Open File” and select “VGA”, “DVI” or “HDMI” EDID file If load file is successful, it shows “Open EDID Table OK.” - 34 -...
  • Page 35 Step 3: Click on “Option” and choose “User ->Factory Mode” to enter factory mode Step 4: Modify “Serial Number” and click “S/N RUN” button to update EDID and serial number to EEPROM - 35 -...
  • Page 36 If write EDID and serial number is successful, it shows” Write EEPROM OK …” And then, Step 5: click “Read EDID” button to check if successful or not. Step 6: After updating EDID, press ClearUser to exit factory mode. - 36 -...

  • Page 37: Alignment Procedure (For Function Adjustment)

    4.3. Alignment procedure (for function adjustment) A. Preparation: Setup input timing ICL-605(800x600@60Hz), 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 38 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-210 (or equivalent equipment). 4. Check the color temperature Bluish, Reddish & Normal. The color temperature specification as follows: <For 300 nits>...
  • Page 39 E. Wire Dressing - Assembly note Step1 : prepare PWR_BD, IF_BD and fix Step 2: prepare Mylar(4K.1Y401.001) on on SHD Step 3: Fix HDMI and IO by screw Step 4: Put panel on Bezel Step 5: Connect LVDS Step 6: Put Shielding on the Panel and Assembly EMI solution, LVDS carefully - 39 -...
  • Page 40 Step 7: Plug panel connectors and manage Step 8: Assembly the CTRL_BD on RC the wire by tape Step 9: Assembly the rear cover & bezel and fix Step 10: Assembly the stand. the BKT_HINGE by screw - 40 -...

  • Page 41: 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 * This Service BOM is subject to change. Please check it on eSupport and SPO system before service parts order release - 41 -...

  • Page 42: 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 43 Disassembly the bezel from the monitor, notice the disassembly order : 1.Top (1) parts of bezel 2. Left (2) parts of bezel 3. Right (3) parts of bezel 4. Bottom (4) parts of bezel - 43 -...
  • Page 44 1. Turn over the monitor; dismantle the Rear cover from the monitor. 2. Tear down control board and take out the wires. Tear down Conductive tape - 44 -...
  • Page 45 Remove the LAMP wire, FFC cable - 45 -...
  • Page 46 Unlock the 5pcs screw, Take the main-SHD off the BZL，then take the panel off the BZL. 1. Take the Mylar off the BKT 2. Unlock the 7 screws - 46 -...
  • Page 47 Disassembled the PCBA from the Main- SHD. Disassembled the I/F and the Power Board，then take out the 2 wires. Tear down SPK from *The assembly is in the reverse order of disassembly. - 47 -...

  • Page 48: Packing

    5.3. Packing - 48 -...

  • Page 49: Block Diagram

    GW2760HS also offer DDC2BI function to meet VESA standard. The GW2760HS consists of a LCD module with LED BLU (1 Light Bar), a power board, a control board, an interface board. GW2760HS has 1W speakers.

  • Page 50: Trouble Shooting Guide

    5.5. Trouble Shooting Guide 5.5.1 No Display or display is unstable on analog or digital port: 5.5.1.1 Interface Board: - 50 -...
  • Page 51 5.5.2 BUTTON Function: 5.5.2.1 OSD Function - 51 -...
  • Page 52 5.5.3 Power no work troubleshooting No Backlight Check D702 +23V +18V ok? D701/D702 Replace D701/D702 D702 Check D705 D701 +5V ok? Replace D705 D701 Check CN701 pin2 Check F601, Replace F601, Check I/F BD (BL-ON) is Hi? Q601, R615 OK? Q601, R615.

  • Page 53: Circuit Operation Theory

    5.6. 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. The scaling IC has internal A/D converter, internal OSD, built in LVDS transmitter and auto-detect input timing functions.
  • Page 54 3.) EEPROM: We use 24C16 to store all the adjustable data, user settings and use 24C02 to store D-SUB and DVI EDID data. 4.) Flash ROM: We use 2M bit flash to store the FW hex. A-2) Control board introduction: There are 6 keys for user's control which includes “Power”, “Menu”, “Right/Up”, “Left/Down”, “Auto”, and “Input Source”.

  • Page 55: Appendix 1 – Screw List / Torque

    Appendix 1 – Screw List / Torque Standard screw torque spec for QCS (A) HOLE MOUNTING TORQUE Screw ITEM DESCRIPTION SIZE MATERIAL (KGF-CM) Head (MM) Metal Ф3.8±0.03 #4-40 8F.205B4.019 SCRW MACH HEX #4-40*0.3" N D-SUB 3.5±0.5 Connector Metal Side mount: SCRW MACH FLATM3*0.5P*6L 8F.5A224.6R0 Metal to metal...
  • Page 56 SCRW TAP FLAT+EXT M4*6L Metal 8F.VZ526.6R0 10±1.0 M4*0.7 ZN-W Metal to metal None tread: Metal 8~10 SCRW TAP-S FPH M3*8(5/1.2) Metal to metal Have tread: Ф2.68±0.03 #2 8F.HA334.8R0 Plastic to metal PCB to metal Aluminum: Metal SCRW MACH FLAT M4*8L C-ZN 8F.5A456.8R0 Metal to metal 9.0±1.0...
  • Page 57 Plastic Metal to plastic Ф1.75±0.05 #1 8F.00551.3R0 SCRW M FPH M2*3L (6/1.4) NI 2.0±0.5 Plastic to plastic PCB to plastic Ф2.35±0.05 #2 8F.MA324.4R0 SCRW TAP FPH M3*4L B-ZN Plastic 3.5±0.5 Ф2.35±0.05 #2 8F.00621.6R0 SCRW TAP FPH M3*6(4.6/0.8)NI Plastic 4.5±0.5 SPECIAL SCREW TORQUE SPEC for QCS. (B) HOLE MOUNTING TORQUE...

  • Page 58: 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 - 58 -...
  • Page 59 Fig. 2 Appearance Description - 59 -...

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