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Acer G225HQ Service Manual

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Product Service Manual – G225HQ
Service Manual for acer: G225HQ
P/N: 9J.11016.L1A
9J.11016.41A
Applicable for All Regions
Version: 001
Date:2009/9/7
Notice:
- For RO to input specific "Legal Requirement" in specific NS regarding to responsibility and liability
statements.
First Edition (Sept, 2009)
© Copyright Acer Corporation 2009. All Right Reserved.
- 1 -

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Summary of Contents for Acer G225HQ

  • Page 1 Applicable for All Regions Version: 001 Date:2009/9/7 Notice: - For RO to input specific “Legal Requirement” in specific NS regarding to responsibility and liability statements. First Edition (Sept, 2009) © Copyright Acer Corporation 2009. All Right Reserved. - 1 -...

  • Page 2: Table Of Contents

    Content Index 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 3. Product Overview ........................ 5 3.1.

  • Page 3: About This Manual

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

  • Page 4: Introduction

    2. Introduction This section contains general service information, please read through carefully. It should be stored for easy access place for quick reference. 2.1. RoHS (2002/95/EC) Requirements – Applied to all countries require RoHS. The RoHS (Restriction of Hazardous Substance in Electrical and Electronic Equipment Directive) is a legal requirement by EU (European Union) for the global electronics industry which sold in EU and some counties also require this requirement.

  • Page 5: Product Overview

    3. Product Overview 3.1. Introduction G225HQ is defined as our new 21.5”W model in ACER V series which will be the ACER project in Qisda. G225HQ is defined as 21.5”W LCD Monitor supports 1920(H) x 1080(V) resolution with DPMS (Display Power Management System) and ACER eColor function.
  • Page 6 EMEA Multi-language supported for OSD Non-EMEA 6 buttons including 1 Buttons control supported monitor power on/off control button. Flywheel control supported Scaling function supported “Auto-Key” function Auto adjustment function supported DDC function supported (EDID ver. 1.3) DDC2B DDC-CI support version 1.1 or later DDC-CI Audio speakers supported Audio Jack (input connector) supported...

  • Page 7: Operational Specification

    3.2. Operational Specification 3.2.1 Power supply Item Condition Spec OK N.A Remark  Input Voltage range Universal input full range 90~264VAC /47~63Hz  Input Current range 90 ~ 264VAC < 2.0 Arms  Normal “On” operation Power Consumption < 52 W LED: Blue ...
  • Page 8 3.2.2 Signal interface Item Condition Spec OK N.A Remark Color: Black  15-pin D-Sub Length: 1800 +/- 30 mm Signal Cable Color: Black  24-pin DVI-D Length: 1800 +/- 50 mm  15-pin D-sub connector See Note-1 For 15-pin D-sub ...
  • Page 9 Note-2: The pin assignment of 24-pin DVI-D connector is as below, Signal Assignment Signal Assignment TMDS RX2- Floating TMDS RX2+ +5V Power TMDS Ground Ground(Cable Detect) Floating Hot Plug Detect Floating TMDS RX0- DDC Clock TMDS RX0+ DDC Data TMDS Ground Floating Floating TMDS RX1-...
  • Page 10 Note-3: The pin assignment of 19-pin HDMI connector is as below, Note：Pin 11 is used as Cable Detect. 3.2.3 Video performance Item Condition Spec OK N.A Remark Both for analog and  Max. support Pixel rate 173 MHz digital inputs Both for analog and ...
  • Page 11 < 12% of step function Refer to VESA VSIS  Overshoot/Undershoot voltage level over the full Standard V1R1 voltage range 3.2.4 Scan range Item Condition Spec OK N.A Remark  Horizontal 31-83 KHz  Vertical 56-76 Hz HDMI supports 50Hz 3.2.5 Plug &...

  • Page 12: Operational & Functional Specification

    3.2.6 Support Timings Resolution Resolution Horizontal Vertical Nominal Pixel Mode (active dot) (total dot) Frequency (KHz) Frequency (Hz) Clock (MHz) 640x480@60Hz 800 x 525 31.469 59.941 25.175 640x480@72Hz 832 x 520 37.861 72.809 31.500 640x480@66.66Hz 864x525 66.66 30.24 VESA 720x400@70Hz 900x449 31.469 70.087...
  • Page 13 *All spec. of monitor need to warm up at least 1hr. LGD LM215WF1-TLA1/TLB1 Item Condition Spec OK N. Remark Any input resolution modes  Resolution which are under 1920x1080 1920x1080 Test Condition: Set Contrast at 50,  Contrast ratio 700(min),1000(typ.) Brightness at 100, Color at User preset.
  • Page 14 3.3.2 Brightness Adjustable Range Item Condition Spec OK N. Remark Max. brightness value – At default contrast level (saturate point) & Full- Min. Brightness adjustable  white color pattern brightness range value) ≧ 100 cd/㎡ 3.3.3 Acoustical Noise Item Condition Spec OK N.
  • Page 15 3.3.6 Electrostatic Discharge Requirements Item Condition Spec OK N. Remark Contact: 8KV  Electrostatic Discharge IEC801-2 standard Air: 15KV 3.3.7 EMC Item Condition Spec OK N. Remark Band 1 < 10 V/m  Electric Band 2 < 1 V/m TCO03 Band 1 <...

  • Page 16: Lcd Characteristics

    3.4. LCD Characteristics 3.4.1-1 The Physical definition & Technology summary of LCD panel LGD LM215WF1 TLA1 Item Condition Spec OK N. Remark  LCD Panel Supplier  Panel type of Supplier LGD LM215WF1 TLA1  546.86mm(21.53”) Screen Diagonal  Display area Unit=mm 476.64(H) x 268.11(V) ...
  • Page 17 [msec] Falling Time [msec] Rising + Falling Red x 0.646 Red y 0.334 Color / Chromaticity Green x 0.303 Coordinates (CIE) Green y 0.616 Blue x 0.147 Blue y 0.067 Color Coordinates (CIE) White x 0.313 White y White 0.329 9 points Luminance Uniformity measurement...
  • Page 18 From 10 sec to 120 sec  OSD Lock EMEA/Non-EMEA  Language languages for Asia/Europe Version  Recall Recall All  Mode ACER Empower Mode D-sub  Input Select HDMI Full  Wide Mode Aspect  Sharpness  Display Information For input timing ...

  • Page 19: Pallet & Shipment

    3.6.1 Dimension Item Condition Spec OK N. Remark  Bezel opening 478.24*269.71 mm  519.44*327.19*60mm Monitor without Stand W x H x D mm  Monitor with Stand W x H x D mm 519.44*386.46*187.87mm  Carton Box (outside) L x W x H mm 142*568*452mm Tilt: -3.5 ~ +15 degree ...

  • Page 20: Certification

    1440 Pallet A: 72 Pallet A: 20 Pallet B: -- Pallet B: Without pallet 3.7.2 Carton Specification 3.7.2.1 Product: Dimension w/o Base Dimension w/ Base Net Weight (Kg) Gross Weight (Kg) W*H*D (mm) W*H*D (mm) 4.288 Kg 6.006 Kg 519.44*382.53*60 519.44*386.46*187.87 3.7.2.2 Package: Carton Interior Dimension (mm)
  • Page 21 EN60950 /  TUV/GS EK1-ITB 2000:2003  CCC (China) CB4943  GOST EN60950  TUV type-approved  SASO IEC60950  CE Mark 89/336/EEC  FCC (USA) FCC Part 15 B  EN55022 Class B  CISPR 22 Class B  VCCI (Japan) VCCI Class B ...

  • Page 22: Packing

    3.9 Packing - 22 -...

  • Page 23: Disassembly /Assembly

    4. Disassembly /Assembly 4.1. Exploded View - 23 -...
  • Page 24 - 24 -...

  • Page 25: Disassembly /Assembly

    4.2. Disassembly /Assembly Assembly SOP about G225HQ Preparation before assemble 1.Clean the room for work 2.Identify the area for material 3.Prepare the implement, equipments, materials as bellow: 1) Press-fixture 2) working table 3) Screw-driver 4) knife*1 5) Glove 6) Cleaning cloth...
  • Page 26 The FFC must be affixed besides the under edge of the panel Tear down the two tape behind the FFC and fix the FFC of C/B to panel Assemble the SPK to the main-SHD, the correct Screw-driver position reference on the picture, then the lock 4 screws to fasten it.
  • Page 27 Lock 5 screws on the Screw-driver PCBA board with this order. Lock one grounded Make sure the wire doesn’t walk across Screw-driver screws on the SPS board with order. the red area 接地螺丝 Scan for fooling Card go with panel. The BKT must fixed into the clip of the BZL Fasten the LVDS to panel...
  • Page 28 Assemble the L-SHD the correct position reference on the picture. Insert the FFC cable of control board into the connector of I/F board Insect the inverter wire Keep all wires in. one by one . Stick two acetic tapes to The wires must not over the edge of the fix the wire one by one as...
  • Page 29 Stick a acetic tape to fixing the speaker wire as the picture. Lock screws of side on Attention the order by Screw-driver Main-Chassis with one to four. 2/4,based on DVI. Fix the big Al tape to panel Assemble the Rear Cover. - 29 -...
  • Page 30 Lock the screw of the rear cover. Connect the D- Screw-driver SUB wire to the D-SUB connect. Check and put CLM-F-abs on working table the Screw-driver carefully. Lock 4 screws inside the hinge. Lock 4 screws to RC. And Screw-driver then cover the CLM of L and R.
  • Page 31 Disassembly SOP about G225HQ 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; according to the actual condition plan the disassemble layout 4.Prepare the implement, equipments, materials as bellow:...
  • Page 32 Tear down the Mylar Tear out the acetic tapes Unlock the wires. Disassembled the SHD shielding : 2/4 screw(the Screw-driver monitor with DVI have four) - 32 -...
  • Page 33 Tear down three pieces of Al foils Disassembled the AC-soc shielding . Unlock the FFC wire. Disassembled the PCBA Screw-driver shielding : 6 screws NOTE: Circuit boards >10 cm² has been highlighted with the yellow rectangle as above image shows. Please detach the Circuit boards and follow local regulations for disposal.
  • Page 34 Disassembled the SPK Screw-driver shielding : 4 screws Get off the panel from the bezel Get off the big tap from the tape Disassemble the control Screw-driver board - 34 -...

  • Page 35: Level 1 Cosmetic / Appearance / Alignment Service

    5. Level 1 Cosmetic / Appearance / Alignment Service 5.1 Alignment procedure (for function adjustment) 5.1.1 Preparation: 1.) Setup input timing to any preset modes or patterns. 2.) Enter factory mode (press “Empowering” & “Power” buttons at the same time to turn on monitor). 3.) Move cursor into “Burn-in Mode”...
  • Page 36 1152x864@75Hz 1600x900 67.5 VESA 1280x960@60Hz 1800x1000 SXGA 1280x1024@60Hz 1688x1066 63.981 60.020 108.000 VESA 1280x720@60Hz 1650x750 44.955 59.940 74.176 1280x800@60Hz 1680x831 49.702 59.810 83.500 WXGA 1360x768@60Hz 1792x795 47.712 60.015 85.500 WXGA+ 1440x900@60Hz 1904x931 55.935 59.887 106.500 WSXGA+ 1680x1050@60Hz 2240*1089 65.290 59.954 146.250 1600x1200@60Hz 2160x1250...
  • Page 37 (C0/cool on OSD) Luminance Color temperature (C1/User on OSD) Luminance Color temperature 0.313+(-) 0.03 0.329+(-) 0.03 (C3/Warm on OSD) Luminance 7. Move cursor into “Burn-in Mode” tag and select “No” to disable burn-in mode. 8. Turns off the monitor power. 5.1.5.

  • Page 38: Software / Firmware Upgrade Process

    5.2 Software / Firmware Upgrade Process 5.2.1 Hardware prepared: Hardware Requirement: 1. ISP board x 1 VGA signal input from 15pin D-sub cable of PC or NB. Connect to target monitor Check the Jumpers on the ISP Circuit Board (make sure J5, J6, J7, J8 are set at ping 1,2 ) Connect ISP board and PC...
  • Page 39 5.2.2 Firmware Upgrade Procedure Step 1: Un-zip Port95nt and install into your computer. Step 2: Un-zip ISP application tool (RTDTool) Step 3: Select IIC and RTD 2122 type, then press “ISP” button to execute firmware program application. - 39 -...
  • Page 40 Step 4: Select File type to Bin and ISP address to 0X90 Press “Bigbin” button to load *series*.bin file from your computer. Step 5: Select “Erase” option and execute lightning button first, and then select “Auto” option and execute lightning button to start upgrade firmware to the monitor. Note: you can change program speed bar to meet your equipment speed if program firmware fail in Advanced Setting.
  • Page 41 5.2.3 Turn Off Burn In IF the monitor without signal input has Burn In pattern. As the following figure ENTER and RIGHT to Burn In Off Press “"E-key" +" Power"” key at the same time to exit Burn in mode(factory mode),and soft power key off/on restart the monitor.
  • Page 42 5.2.4 Setup the OSD for Panels Timing request: 1280X1024@75Hz Choose “Panel Type” to press Enter. 1. Press the OSD setting 2. Choose “On” in Burn In 4. Choose the Panel Type you want (LGD or SEC), and press Enter. 5. Check OSD to make sure the panel type 3.

  • Page 43: Edid Upgrade Procedure

    5.3 EDID Upgrade Procedure Step 1: Run the program “Q-EDID-V012.exe”, when the UI popped up Note: If “VGA” choose 128bytes, and “HDMI” choose 256bytes - 43 -...
  • Page 44 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 - 44 -...
  • Page 45 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 …” - 45 -...

  • Page 46: Osd Operation Guide

    5.4 OSD Operation Guide - 46 -...
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  • Page 50: Level 2 Circuit Board And Standard Parts Replacement

    6. Level 2 Circuit Board and Standard Parts Replacement 6.1. Trouble Shooting Guide No Display or display is unstable (Interface Board): Screen is Blank and Power LED is White. Follow instructions from OSD dialog OSD shown when key pressed? Proceed to “Check Control Board”.
  • Page 51 Check Control Board Checking Contorl Board Working ? Re-plug the control wire, then retry Traces Replace the Control OK ? Board, then retry Components to Replace the Control board OK ? components, then retry Replace a new Control board - 51 -...
  • Page 52 3 Check Scalar Scalar failed to output data Are all the power and Power or the ground pins ground pins at the correct has bad contacts voltage level? DSUB Connector or Are the correct RGB and Are the signals presented PC failure Hsync signal fed to on DSub connector?
  • Page 53 4 Check LCD Module LCD m odule fail LCD m odule fail To display To display im age im age No Picture No Picture W hite Screen W hite Screen Bad Connection Bad Connection Connection between LVDS cable and or connector, or connector, LCM connector LVDS cable...
  • Page 54 5 Power Board no work troubleshooting: No Backlight Check V-inverter ok? D701/D702 Replace D701/D702 Check +5V ok? D703/D704 Replace D703/D704 Check CN701 pin2 Check F601, Replace F601, Check I/F BD (BL-ON) is Hi? Q601, R615 OK? Q601, R615. Check CN701 pin1 Check I/F BD (BRT-ADJ) exist? Check IC801...
  • Page 55 6 Audio Function: Audio do not work Was Audio Input Was Audio V Plug Audio input. plugged? existed? Check MCU send VOL_ON control Check VOL_ON signal or not. Adjust volume Return Power control switch to Check VOL_ADJ Function Step. normal. Was CN551 Plug CN551 plugged?

  • Page 56: Circuit Operation Theory

    6.2 Circuit Operation Theory I. Introduction: G225HQ is a 21.5 inch and 24bits color TFT LCD monitor, which can support the resolution up to 1920x1080. It has VGA input and compliant with VESA specification to offer a smart power management. The monitor has DDC/CI function to make the monitor communicate with PC by Acer ADM DDC/CI software, and also it has ACM function to let the monitor contrast ratio up to 50000:1.
  • Page 57 III. Circuit Implementations: THE MAIN BODY: A-1.) Interface board block diagram: (a) Circuit operations: The scaling IC has OSD and auto detecting input timing functions. OSD offers adjustable functions to the end- users. Auto detecting timing function can detect change modes. It outputs the digital R-G-B data, pixel clock and control signal to TCON of the LCD module.
  • Page 58 RTD2555LH embedded 16.5KSRAM dynamically stores OSD command and fonts, compatible advanced color control features. 2.) EEPROM: We use 24C16 EEPROM to store monitor user data and user preset timings. There are 16 user timing modes are automatically saved in it. Each timing mode is allocated with 22 bytes of memory space for information such as Sync frequencies, polarities…...

  • Page 59: Spare Parts List

    Picture CATEGORY DESCRIPTION ACER PART NO. LCDM21.5W LM215WF1-TLB1 LK.21508.002 LGD P Board PCBA IF BD DUAL 55.LJA0Q.001 A/L MI G225HQ BOARD PCBA SPS BD 55.LJA0Q.005 AUDIO MI G225HQ BOARD PCBA CTRL BD MI BOARD 55.LJ80Q.006 G225HQ Cable - 59 -...
  • Page 60 CORD H05VV-F CABLE 10A250V EUR 1.8M 27.LBJ0Q.001 WIRE 10/11-P 1007#24 X223HQ CABLE 50.LGQ0Q.004 FFC LVDS 30P 16TH NO S G225HQ CABLE 50.LJ80Q.002 FFC WIRE 7P CTRL 50.LJ80Q.001 BD G205H CABLE CABLE SIGNAL/C H+V OD_5.5 1.8M CABLE 50.LBJ0Q.002 Assembly - 60 -...
  • Page 61 ASSY BASE W/P 60.LJ80Q.008 CASE/COVER/BRA G225H CKET ASSEMBLY ASSY RC DUAL LPL CASE/COVER/BRA G225HQ 60.LJ80Q.005 CKET ASSEMBLY ASSY CLMN ABS DB27A G225H CASE/COVER/BRA 60.LJ80Q.007 CKET ASSEMBLY ASSY BZL DB27A CASE/COVER/BRA G225HQ 60.LJ80Q.001 CKET ASSEMBLY - 61 -...

  • Page 62: Appendix 1 - Screw List / Torque

    Appendix 1 – Screw List / Torque (A) STANDARD SCREW TORQUE QCS - 62 -...
  • Page 63 - 63 -...
  • Page 64 (B) STANDARD SCREW TORQUE QZB & QMX - 64 -...

  • Page 65: 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 - 65 -...
  • Page 66 - 66 -...

  • Page 67: Appendix 3 - I/F Board

    Appendix 3 – I/F Board Please see the next page - 67 -...
  • Page 68 U9 spec. Vds=-30V, Vgs=+/-12V Id=-3.5A when ambient temp.=70 degre G(1) Reset circuit for CMO L03 over D(3) rush current S(2) R307 1K J G697L293T1UF /RESET L CD_5V_POWER 100K J C102 R308 0.1U K 10K J L CD_5V_POWER RXEIN3+ RXEIN3- RXECKIN+ RXECLK- AO3401L RXEIN2+...
  • Page 69 + 3.3V P C5V E DID_ V CC D N 4 BAV70 B ZV55C6V2 100 J TP59 0 .0 47U 16V RE D1 - 0 .1 U Z TP38 12K J 12K J TP60 TP41 TP39 75 J 4 .7 P C TP61 56 J TP42...
  • Page 70 0824 C84 from 10U ==>100U 0824 C301 0824 R301 R302 0912 L4 ==> R100 0912 MTV 512==>RTD 2120 1228 R300 R303 R304 C300 Q7 0131 Qisda Corporation Project Code Model Name OE M/ODM Model Name Title History Size PCB Rev. Document Number Rev.
  • Page 71 A _ D etect A _ D etect + 3.3V D 1 0 C 3 1 R 21 130 J P Z U 6.2B2 0 . 1 U Z S C L _D RX2- T P45 R 22 130 J C 22 S D A _ D RX1-...
  • Page 72 +3.3V TMDS_VDD Z220 TMDS_VDD TMDS_VDD 0 .1U Z NC / 0 J 47U 25V 0 .1U Z Option LH-->R24 R 1 .8DVCC RM2101B0DA +3.3V LR-->R26 1 U K TMDS_VDD 0 .1U Z 0.1U Z 0.1U Z 47U 25V giachin 2525L (0719) 1 K J Option LH-->R25...
  • Page 73 +3.3V +3.3V 1 0 P J 1 0 P J NC 1M 4.7K J 2 4 MHZ W P _ C04 A D C _ K E Y3 A D C _ K E Y2 4.7K J A D C _ K E Y1 P O W E R _ K E Y U 1 0 C ab le _ D e te c t_D...
  • Page 74 R216 TP32 B R T _ ADJ TP33 B L _ O N TP70 R220 R221 4.7K J 4.7K J TP34 V O L _ O N TP35 V O L _ ADJ TP36 R217 S C L _ T O UC H R218 Z220 S D A _ T O UC H...

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