Acer XB270HU Service Manual
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Acer XB270HU Service Manual

Acer XB270HU Service Manual

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ACER_LCD_XB270HU_SM20150112V1

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  • Page 1 ACER_LCD_XB270HU_SM20150112V1...

  • Page 2: Table Of Contents

    Contents Table of Contents Important Safety Notice  ..............................  1   1. Product Specification  ..............................  2   2. OSD Menu ..................................  1 3  3. Exploded Diagram ...............................  1 4  4. Assembly and Disassembly Procedures ........................  1 7  5. Troubleshooting  ................................  2 4  6.

  • Page 3: Important Safety Notice

    1    Important Safety Notice Product Announcement: This product is certificated to meet RoHS Directive and Lead-Free produced definition. Using approved critical components only is recommended when the situation to replace defective parts. Vender assumes no liability express or implied, arising out of any unauthorized modification of design or replacing non-RoHS parts.

  • Page 4: Product Specification

    2    1. Product Specification 1.1 Monitor Overview: 1.1.1 Monitor Specification...
  • Page 5 3    1.1.2 Electrical block diagram: This section describes the electrical requirement of the monitor. Below is the block diagram. LED Drive. Flat Panel and LED backlight   RS232 Connector For white balance Power board Main Board adjustment in factory mode USB Board Key Board...
  • Page 6 4    1.1.4 Interface Connectors:...
  • Page 7 5    1.1.5 Input Signals: Video Input Signals Range (Analog RGB Signal) Symbol Item M in Unit Horizontal Frequency Vertical Frequency Fclk Pixel Clock Frequency 148.5 High Level Input Low Level Input Video RGB Analog Video Level Video Signal Amplitudes: The video inputs consist of Red, Green and Blue signals each has its own coaxial cable terminated at the monitor.
  • Page 8 6    1.1.6 Monitor Modes and Timing Capability: Factory Assigned Display Modes:...
  • Page 9 7    1.1.7 Mechanical and Packing: Monitor Packed Monitor Width: 623.7mm Height: 401.15~551.15mm Depth: 245.25mm Weight: Dimension (mm):    ...
  • Page 10 8    1.2 Panel Specification: 1.2.1 Flat Panel This specification applies to the 27 inch-QHD color a-Si TFT-LCD Module M270DAN0. The display supports the QHD - 2560(H) x 1440(V) screen format and 1.07B colors. The light source of this TFT-LCD module is W-LED. All input signals are 4-port LVDS interface and this module doesn’t contain a driver for backlight.
  • Page 11 9    Optical Characteristics: Ta= 25°C 1.2.2 Backlight Requirements:...
  • Page 12 10    1.2.3 Defect T erminology:  Dark Spots / Lines: Spots or lines that appear dark in the display patterns and are usually the result of contamination. Defects do not vary in size or intensity (contrast) when contrast voltage is varied. Contrast variation can be achieved through the use of varying gray shade patterns.
  • Page 13 11    Note 3 Definition of Response Time (T The output signals of photo detector are measured when the input signals are changed from “Full Black” to “Full White” (rising time, TrR), and from “Full White” to “Full Black” (falling time, TfF), respectively. The response time is interval between the 10% and 90% (1 frame at 60 Hz) of amplitudes.
  • Page 14 12    Note 5 Crosstalk is defined as below and measured by TOPCON SR-3 Note 6 Test Pattern: Sub checker Pattern measured by TOPCON SR-3  ...

  • Page 15: Osd Menu

    2) When OSD menu is in active status, this button will act as EXIT-KEY (EXIT OSD menu). 3) When exit eColor OSD, it will activate the Auto Adjustment function automatically. 6.Empowering 1) Activate OSD First menu when OSD is OFF. 2) Trigger the acer eColor Management when first menu is active.

  • Page 16: Exploded Diagram

    14    3. Exploded Diagram 3.1 Product Exploded Diagram:  ...
  • Page 17 Note: The parts information listed below are for reference only, and are subject to change without notice. Please go http://cs.tpv.com.cn/hello1.asp for the latest information. Item Description TPV Part No. Acer Part No. BEZEL Q34G7946AEMC2L0101 N/A   A33G1461 2 1C0100 LENS_POWER N/A  ...
  • Page 18 16    3.2 Packing Exploded Diagram: ITEM DESCRIPTION QT'S CARTON EPS-1 EPS-2 EPS-3 EPE BAG FOR MONITROT HEAR OF MONITOR PE BAG FOR BASE BASE PE BAG FOR STAND STAND DVI CABLE POWER CABLE SIGNAL CABLE WARRANTY CARD AUDIO CABLE DP CABLE USB CABLE HDMI CABLE...

  • Page 19: Assembly And Disassembly Procedures

    17    4. Assembly and Disassembly Procedures 4.1 Assembly Procedures: Prepare a main board, a power board and a USB board. Connect the boards. Prepare a main frame and some screws. Use a Philips-head screwdriver to tighten the screws till the boards with shield are firmly attached.
  • Page 20 18    Use a Hex-head screwdriver to tighten the screw for locking the connectors. Prepare a bezel and key board. Assemble bezel and key board aim the active position. Prepare a panel. Put panel into bezel.   Put the Mylar slice （Note： refer to the last page） marked with information of mainframe position on the panel. Mylar slice edge must be against the bezel.
  • Page 21 19    Use four screws to lock the rear cover. Assemble the stand ASS’Y to rear cover. Assemble the stand ASS’Y to rear cover.
  • Page 22 20    4.2 Disassembly procedures: Remove the stand ASS’Y and unscrew the screws on rear cover. Press the switch and pull at the stand strongly at the same time. Press  Unscrew the four screws on rear cover. Remove the rear cover. Use a tool (like picture using) to open all latches. (Be careful the position of the key board.)
  • Page 23 21    Disconnect the LVDS cables (main board to panel), lamp power cable (main board to panel), and tear up all tapes. Turn over the shield, remove mylar and unscrew the screws on main board, power board and USB board.
  • Page 24 22    Remove all cables. The main board and power board. Remove the panel. Turn over the bezel and panel unit, Lift the bezel to separate it from the panel as below left picture. And then remove the panel.
  • Page 25 23    The bezel and key board.

  • Page 26: Troubleshooting

    24    5. Troubleshooting 1. No Power No power Check power cable is Re-plug the power cable tightened? Check Power “On/Off” Turn on the Power “On/Off” switch is “On”? Check the LED Check the AC power indicate is OK? Replace the converter board Replace main board and check connections Replace key board and check connections...
  • Page 27 25    2. No Video (Power LED Blue) No Video (Power LED Blue) Press the power Replace the main board button is OK? Replace the converter The end board Replace the main The end board and connection Check the LVDS/FFC Replace the LVDS/FFC cable or panel cable or panel...
  • Page 28 26    3. DIM DIM (image overlap, focus or flicker) Reset in factory mode The end Set to the optimal The end frequency, select the recommended frequency Readjust the phase and pixel The end clock in the user mode Pull out signal cable and Check the signal cable check “Self Test Feature and the PC...
  • Page 29 27    4. Color is not optimal Color is not optimal Color shift Miss color Reset the factory mode Replace the signal cable In the user mode, set the” color settings” until customer satisfy The end Pull out the signal cable and check the screen color display is normal? Replace the signal cable or PC...

  • Page 30: Firmware Upgrade Process

    28    6. Firmware Upgrade Process 1.Materials list MSP430tool（driver） usb-blaster（driver） MSP430 software usb-blaster software Monitor usb cable MSP430 tool usb-blaster tool 2.Install driver When insert the msp430 tool and usb-blaster tool to PC, you need to install the driver. 3. TI micro-controllers FW update 3.1.1 Double-click to install ISP program.
  • Page 31 29    3.1.2 TI micro-controllers FW update This chapter describes how to flash new code into the two TI-MSP430 micro-controllers on the NVIDIA G-SYNC module and base board. These two micro-controllers take care of handling the button presses and the LED control of the monitor.
  • Page 32 30    3.1.5 Updating the base board micro-controller 3.1.6 Cable Connections Connect the cable that came with the TI MSP-FET430UIF in the way indicated in the picture above. Make sure that pin1 of the ribbon cable header that connects to the base board. Connect the USB cable connected to the MSP-FET430UIF to the computer that has the FET-Pro430 Lite software installed.
  • Page 33 31    3.1.8 Selecting the correct micro-controller Select the Group”MSP430G2xx”, and the device (right underneath)”MSP430G2553. 3.1.9Selecting the correct communication protocol Click on the “setup->connection/device reset” menu, and the following popup should come up:...
  • Page 34 32    Make sure that the “Spy Bi Wire” communication with Target Devices is selected(and not “JTAG”). All other options should already be correct. Click “ok” to apply and close popup. 3.1.10 Selecting the code file Now click the “Open code file” button, and browse to the “Acer_buttonKey.txt” file and select it. The window should now look like this:...
  • Page 35 33    3.1.11 Flash the code Now click the “AUTO PROG” Button. After finished, the screen should look like this: 3.2.1Updating the G-SYNC module micro-controller 3.2.2 Cable Connections...
  • Page 36 34    Remove the ribbon cable between the MSP-FET430UIF and the base board. Connect the NVIDIA supplied ribbon cable that fits the MSP-FET430UIF to the MSP-FET430UIF end. Connect the other side of the cable as shown in the picture above. Find the pin1 marker on the cable(it is indicated by a black arrow in the plastic in the header-this is not very visible and can usually only be seen with extra lighting under a magnifier.
  • Page 37 35     Installing the USB Blaster Device Driver 4.3 Required Software  Download the Nios II programming environment as part of the Altera Quartus II Design Suite from: https://www.altera.com/download/sw/dnl-sw-index.jsp. Select the Quartus II subscription Package(we only use the Nios II programming environment component of the suite-the “Paid license required” message can be ignored) 4.4 Flash Bit stream (if necessary) Double click the shortcut to the “Nios II 13.1 Software Build Tools for Eclipse”...
  • Page 38 36    4.4.2: Select root directory to browse Rel8.3 folder which is based on your folder location. After that, press “Finish” to import Rel8.3. 4.4.3: Select osd_template to open Nios II command shell:...
  • Page 39 37    4.4.4: After step3, popup below command line. Going to binary_images through below commands: 1. cd .. 2. cd binary_images Step5: executed ./flash_bitstream.sh to flash bitstream. The Nios II popup below picture and start flashing the bitstream. Step6: AC power cycle let G-SYNC module reset and restart normal process.
  • Page 40 38    Base on NIVIDA comments, the G-SYNC module will include Rel7.0 and micro-controller 1.12 shipped out. In theory, we don’t need to update bitstream and module micro-controller. 4.4.5 Flash .bin/.elf/panel profiles Step1: keeping command line window, and key-in the folder path based on your folder location. In this sample, through below way going to XB270H_AOSDFW_1.86.
  • Page 41   Q&A: 1. Which conditions shall update FW? Totally, XB270HU, XB270H A and XB280HK are having 6 parts FW combination to become G-SYNC model. a. Bit-stream The modules ship pre-programmed with Rel7, which is the exact same RTL and DP CPU code as is in Rel8.

  • Page 42: Writing Edid Process

    40    7. Writing EDID Process EDID Process is needless.

  • Page 43: Fru (Field Replaceable Unit) List

    NOTE: To scrap or to return the defective parts, you should follow the local government ordinance or regulations on how to dispose it properly , or follow the rules set by your regional Acer office on how to return it.
  • Page 44 42    Key board KEPCDQKK Panel 750GBU270A230JN000 LVDS CABLE 395GLM3030D BEZEL Q34G7946AEMC2L0101 REAR COVER Q34G7941AEM03S0100...
  • Page 45 43    stand-base ass'y Q37G042120130100FH MAIN FRAME Q15G143930130100AJ...
  • Page 47 Contents Table of Contents page 1. Schematics and Layouts  ...............................  2   1.1 Schematics ................................  2   1.2 Layouts ................................  1 1 ...
  • Page 48 1. Schematics and Layouts 1.1 Schematics Main Board 715G7388M0B000006N 02. System Power +19V R701 430K 1% U701 C704 C705 C702 C703 220UF 35V 220UF 35V C706 10UF 25V 10UF 25V R703 R702 R704 10UF 25V 1.5R 100K 1/16W 5% 10 OHM 1% C707 PGND 100NF 25V...
  • Page 49 03. Panel Power   DCP_FB +19V C743 R747 +19V 2,15 22P 50V U705 10K 1/16W R748 Panel_VCC APW7089KAI-TRG 140K 1% R749 +19V_IN_Panel 0R05 OHM R750 DCP_COM UGND COMP DC_Panel_EN Panel_P L704 C744 100K 1/16W 5% 10uH DCP_VCC C745 C746 C747 C748 1uF 25V 100UF 25V...
  • Page 50 05. SODIMM - 204PIN CN401 Female Con LVDS_7_DATA_P4 LVDS_5_DATA_P4 LVDS_7_DATA_N4 LVDS_5_DATA_N4 LVDS_5_DATA_P3 LVDS_7_DATA_P3 LVDS_5_DATA_N3 LVDS_7_DATA_N3 LVDS_7_DATA_P2 LVDS_7_DATA_N2 LVDS_5_DATA_P2 LVDS_5_DATA_N2 LVDS_7_CLK_P LVDS_5_CLK_P LVDS_5_CLK_N LVDS_7_CLK_N LVDS_5_DATA_P1 LVDS_7_DATA_P1 LVDS_5_DATA_N1 LVDS_7_DATA_N1 LVDS_5_DATA_P0 LVDS_7_DATA_P0 LVDS_5_DATA_N0 LVDS_7_DATA_N0 LVDS_6_DATA_P4 LVDS_4_DATA_P4 LVDS_6_DATA_N4 LVDS_4_DATA_N4 MH01 LVDS_4_DATA_P3 LVDS_4_DATA_N3 LVDS_6_DATA_P3 LVDS_6_DATA_N3 LVDS_4_DATA_P2 LVDS_6_DATA_P2 LVDS_4_DATA_N2...
  • Page 51 06. MISC   +2.5V_UC R433 0R05 1/10W R434 NC/0R05 1/10W A dd R433/R434 - 20131205 Reserve CN408 - R401 R402 R403 20131209 MONITOR_LED_G_BUFF 20K 1/16W 20K 1/16W 20K 1/16W CN406 CN408 R404 200R 1/10W 5% R404 change t o BUTTONS_PIN_4 R425 0R05 1/16W KEY1...
  • Page 52 07. Panel Interface LVDS - 8X OUTPUT CN402 To panel CN3 LVDS_5_DATA_N4 LVDS_5_DATA_P4 LVDS_5_D4 90DIFF_NETCLASS1 90DIFF_NETCLASS1 LVDS_5_D4 LVDS_5_D3 90DIFF_NETCLASS1 LVDS_5_DATA_N3 LVDS_5_DATA_P3 90DIFF_NETCLASS1 LVDS_5_D3 LVDS_5_CLK 90DIFF_NETCLASS1 LVDS_5_CLK_N LVDS_5_CLK_P 90DIFF_NETCLASS1 LVDS_5_CLK LVDS_5_D2 90DIFF_NETCLASS1 LVDS_5_DATA_P2 LVDS_5_DATA_N2 90DIFF_NETCLASS1 LVDS_5_D2 LVDS_5_D1 90DIFF_NETCLASS1 LVDS_5_DATA_N1 LVDS_5_DATA_P1 90DIFF_NETCLASS1 LVDS_5_D1 LVDS_5_DATA_N0 LVDS_5_DATA_P0...
  • Page 53 08. CONVERT L801 33uH +19V L801 change t ype - 20131207 D801 B3100B +19V C801 R801 220UF 35V C802 C803 C810 100N 50V Q801 R802 10 OHM 1/4W APM1105NUC-TRG 0R05 1/4W 470NF 50V R803 C805 change t o 1uF/25V 10K 1/10W 5% - 20140206 R804 VBLCTRL...
  • Page 54 Power Board 715G6765P01000001E 02.AC input NR9901 SCK13055LMY 002 680PF 250V NR9902 C9901 C9910 SCK13055LMY 002 SW901 470PF 250V F9901 FUSE T5.0AH/250V D9104 BD9901 PR1007 KBJ608G SOCKET CN901 C9905 L9902 L9901 470NF 275V 13mH 13mH BD9902 KBJ608G FB9902 BEAD C9902 C9909 D9107 680PF 250V PR1007...
  • Page 55 04.Main Power R9145 100 OHM 1/4W R9146 100 OHM 1/4W C9141 R9147 T9101 100 OHM 1/4W +19V_1 POWER X'FMR D9106 L9103 R91 04 F9902 YG868C15R 82KOHM +-5% 2WS +19V C9104 2200PF2KV FUSE C9137 C9138 C9114 C9147 C9136 C9120 C9134 470UF 35V 1000UF 35V 470UF 35V 1000UF 35V...
  • Page 56 Key Board 715G5908K03000004L LED001 NC/MLVS0402M04 NC/MLVS0402M04 ZD001 ZD002 CN001 CABLE LBADC1 R001 2K 1/16W LBADC2 LED_BLUE# POWER_Key LED_RED# R004 100OHM1/16W LED_BLUE# LED_RED# R005 100OHM1/16W R002 2K 1/16W R006 R003 100OHM1/16W 1K 1/16W 5% FFC CABLE 6P 260MM 1.0MM NC/MLVS0402M04 NC/MLVS0402M04 NC/MLVS0402M04 NC/MLVS0402M04 NC/MLVS0402M04...
  • Page 57 1.2 Layouts Main Board Main Board 715G7388M0B000006N...
  • Page 60 Power Board 715G6765P01000001E...
  • Page 62 Key Board 715G5908K03000004L USB Board 715G6022T01000005F...

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