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Acer D240H Service Manual
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Acer D240H Service Manual

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Acer –LCD-D240H
Service Manual
LCD Monitor Acer D240H

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  • Page 1 Acer Acer –LCD-D240H Service Manual LCD Monitor Acer D240H...

  • Page 2: Table Of Contents

    Copyright 2006 InnoLux Tech. Corp. Ltd All Rights Reserved This manual may not, in whole or in part, be copied, Photocopied, reproduced, translated, or converted to any electronic or machine readable form without prior written permission of InnoLux Tech. Corp. Ltd. Acer D240H Service Manual...

  • Page 3: Important Safety Notice

    Acer Acer –LCD-D240H Important Safety Notice Safety precautions This monitor is manufactured and tested on a ground principle that a user’s safety comes first. However, improper used or installation may cause damage to the monitor as well as to the user.

  • Page 4: Product Specification

    01 Product Specification General: Acer D240H is designed with LVDS interface and VGA/DVI-D/HDMI input, and Embedded DPF Function ,it featured with embedded universal AC power supplies and audio input. It’s a green product and meets all ROHS standard. The power button and display control buttons are on the front of the monitor.
  • Page 5 Acer Acer –LCD-D240H USB: USB2.0 (optional function) Webcam: 1.0M resolution(1280 x 800), standard USB2.0 interface, array microphone (optional function) Operation Specifications The unit should suffer no visible cosmetic damage and should operate with no degradation in display quality during exposure to the operating conditions and after exposure to the non-operating conditions, in any sequence.
  • Page 6 Acer Acer –LCD-D240H Item Condition Spec Contact discharge: 4KV Electrostatic Contact discharge: 8KV ● IEC61000-4-2(EN55024) Discharge Air discharge : 8KV Air discharge : 15KV ● Reliability Items Condition Spec Note >50,000 Hours， MTBF T=25℃ Luminance 50,000 Hours(Typ) CCFL Life time...
  • Page 7 Acer Acer –LCD-D240H DC output loading Vcc5V/1.8A, capability Vcc25V/1.4A Audio 5V: 1.5A USB 5V: 1.5A Rise Time <50mS Dynamic load change Hold-up time AC input: 100V~240V >10mS Overshoot <10% Turn on delay time Power management See Table-1 Note3: Paralleled a 0.1uF ceramic Cap. And 47uF aluminum Cap. Between the end of DC loading side, Measured band-width=20MHz.
  • Page 8 Acer Acer –LCD-D240H CCFL startup voltage ≧2000 Vrms (0˚C) CCFL startup voltage ≧1850 Vrms (25˚C) Operating frequency 40~60 KHz Protect delay time > 1 second Efficiency ≥75% Note: Other panels please refer to the reference panel specs. Brightness output The test to verify specifications in this section shall be performed under the following standard conditions unless otherwise noted.
  • Page 9 Acer Acer –LCD-D240H Min. luminance nine points (backlight ≥ 75 Max. luminance nine points (backlight Input / Output Signal Specifications 4.1 AC in AC Input Voltage: 100~240VAC 4.1.1 AC Input Current: 1.2A @100Vac, 0.6A @240Vac 4.1.2 AC Frequency Range: 50~60Hz 4.1.3...
  • Page 10 Acer Acer –LCD-D240H 4.5 DVI-D in DVI-D Connector Pin assignment: Symbol Symbol TMDS Data 2- Hot Plug Detect TMDS Data 2+ TMDS Data 0- TMDS Data 2/4 shield TMDS Data 0+ TMDS Data 0/5 shield DDC Clock DDC Data Clock shield...
  • Page 11 Acer Acer –LCD-D240H DDC SCL Signal SPEC: 4.6.2 Items Condition Specification Analog RGB signal Input impedance =75 Ohm 0.7Vp-p Sync Input impedance ≧1k Ohm TTL level, Separate H/V-sync(+/-) H-Sync Frequency 31K~83KHz V-Sync Frequency 49~76Hz 4.7 Timing table VESA MODES Horizontal...
  • Page 12 Acer Acer –LCD-D240H SVGA 832*624@75Hz 49.725 74.55 57.283 1152*870@75Hz 68.681 75.062 Other MODES WXGA 1280*800@60Hz 49.702 59.81 83.5 Note: 1. Non-interlace signals only (An interlace signal cannot be display) 2. Please refer to F/W specification for more detail 3. Each frequency of Power Macintosh and Sun Ultra is a reference value...
  • Page 13 Acer Acer –LCD-D240H 4.8 HDMI timing table For DVD Player Input, Attached timing is supported : Ratio Mode Resolution Pixel Clock MHz H sync KHz V sync Hz 640 x 480p 25.2 31.5 NTSC (480i) 720 x 480 13.50 15.73...
  • Page 14 0A D0 8A 4.11 DPF function D240H supports DPF Function, which Embeded 2G Nandflash stroage ,it can also communication with PC by connecting USB cable,and supports 4 IN 1 memory card which includes SD, XD, MS, and MMC, besides the 4 kind’s memory card,it also...
  • Page 15 2) card reader function Connect the USB upstream and the card read function will be started when D240H on Monitor mode..PC will find the two USB devices are CF card and SD/MS/XD/MMC card, the two devices that in the DPF all can be operation by PC 4.11.2.
  • Page 16 Acer Acer –LCD-D240H 4.11.4. DPF function test 4.11.4.1. DPF Monitor Category Yes/ No keypad control flow .jpg 1. Switch to DPF Photo keypad flow .bmp 2. DPF play photo mode keypad flow...
  • Page 17 Acer Acer –LCD-D240H 3. DPF select photo mode flow 4. DPF setting menu flow...
  • Page 18 Acer Acer –LCD-D240H...
  • Page 19 Acer Acer –LCD-D240H Setting menu layer-1...
  • Page 20 Acer Acer –LCD-D240H Setting menu layer-2 Setting menu layer-3...
  • Page 21 Acer Acer –LCD-D240H 4.11.4.2. DPF photo function test 1.Test the picture as below items: 1).Photo performance 2). Next picture 3). Forward picture 4). Pause 5). Play 6), slide show. 7). Rotate. 8). Browser small and big photo Check and confirm the function is OK! 2.Test the setting menu as below items:...
  • Page 22 4). If first Monitor mode switch to DPF when AC on and DC on and form power saving ,the screen will display DPF Acer logo 5). If hot_plug any card on DPF mode,the display screen will change to input source select mode .
  • Page 23 Acer Acer –LCD-D240H 4.11.5. DPF System Profile 1.DPF-functions overview 2.DPF-Input support& image support...
  • Page 24 Acer Acer –LCD-D240H Function Specifications All the tests to verify specifications in this section shall be performed under the following standard conditions unless otherwise noted. The standard conditions are: Temperature : 25 ± 5°C Warm-up time : 30 minutes minimum...
  • Page 25 Acer Acer –LCD-D240H Function Specifications All the tests to verify specifications in this section shall be performed under the following standard conditions unless otherwise noted. The standard conditions are: Temperature : 25 ± 5°C Warm-up time : 30 minutes minimum...
  • Page 26 Acer Acer –LCD-D240H Text mode Standard mode Graphics mode Movie mode User mode Text mode 0～100 Contrast Standard mode Graphics mode Movie mode 0～100 H. Position 0～100 V. Position 0～100 Focus 0～100 Clock 50 (1) Warm Cool Color Temp 0～100 User 0～100...
  • Page 27 Acer Acer –LCD-D240H Reset Resolution H. Freq V. Freq Input Type Notes: (1) Clock default 50 is for Visa timing. Others depend on timing. (2) Depend on timing & S/N...
  • Page 28 Acer Acer –LCD-D240H 5.4 OSD Translation 5.4.1 Monitor part Main menu (NO_EMEA) English Deutsch Français Español Italiano 繁體中文 简体中文 日本語 (英语) (德语) (法语) (西班牙语) (意大利语) Picture Bild Image Imagen Immagine 畫面 画面 ピクチャー Brightness Helligkeit Luminosité Brillo Luminosità 亮度 亮度...
  • Page 29 Acer Acer –LCD-D240H Message menu: (NON_EMEA) English Deutsch Français Español Italiano 繁體中文 简体中文 日本語 (英语) (德语) (法语) (西班牙语) (意大利语) Autoréglage Autoajuste Auto Config 自動調整 Autom. Abgl. Autoregolazione 自动调整 自動調整 Veuillez Espere, Please Wait Bitte warten Attendere prego 請稍待 请稍待 お待ちください...
  • Page 30 English Russian Deutsch Français Español Italiano Dutch Finnish (英语) (俄语) (德语) (法语) (西班牙语) (意大利语) (荷兰语) (芬兰语) Acer Acer –LCD-D240H Picture Изображ. Bild Image Imagen Immagine Beeld Kuva Brightness Яркость Helligkeit Luminosité Brillo Luminosità Helderheid Kirkkaus Контрастно Contrast Kontrast Contraste Contraste...
  • Page 31 Acer Acer –LCD-D240H Standard Standard Standard Estándar Standard 標準 标准 標準 Text Text Texte Texto Testo 文字 文本 テキスト グラフィック Graphics Grafiken Images Gráficos Grafica 圖形 图形 ス Movie Spielfilm Film Película Film 電影 电影 ムービー User Benutzer Utilisateur Usuario Utente 使用者...
  • Page 32 Acer Acer –LCD-D240H Monitor Weight 5.6±0.3Kg 6.2 Cabinet Material Cabinet Material Spec Cabinet Plastic Material ABS HB(PMMA) BLACK Front Bezel Back Cover BLACK Base BLACK Cabinet Texture ACER SPECIFICATION 6.3 Mechanical Specification Mechanical Spec Bezel Gap Specification ≦1.3mm Screen printed Parts Front bezel 6.4 Base Mechanical Interface...
  • Page 33 Acer Acer –LCD-D240H 7. Package 7.1 Unit Package Specification 7.1.1 Units package Items Spec Packaging Refer to ME PACKING SPEC COLOR Length 632+/-2.0mm Height 494+/-2.0mm Width 139+/-2.0mm Gross Weight 7.9±0.3kg Units per Pallet 56sets/pallet 40’ /20’ Container Loading, Palletized 1120sets/560sets 7.1.2 Unit Packing Vibration...
  • Page 34 Acer Acer –LCD-D240H Test 7.1.3 Non operation Thermal Shock Item Description Temperature C to 60 >60 (10hrs)>25 (2hrs)>-20 (10hrs)>25 ºC ºC ºC ºC ºC Reset cycles times every transition time 0.5 hr, 3cycles , Total cycles 3 cycles 7.1.4 Package Drop...

  • Page 36: Flat Panel Specification

    Acer Acer –LCD-D240H 02. Flat Panel Specification...
  • Page 37 Product Specification M240HW01 V2 AU OPTRONICS CORPORATION Contents 1.0 Handling Precautions..................4 2.0 General Description ..................5 2.1 Display Characteristics ...................... 5 2.2 Optical Characteristics....................... 6 3.0 Functional Block Diagram ................10 4.0 Absolute Maximum Ratings................11 4.1 TFT LCD Module ......................11 4.2 Backlight Unit........................11 4.3 Absolute Ratings of Environment ..................11 5.0 Electrical characteristics ................12 5.1 TFT LCD Module ......................

  • Page 38: Handling Precautions

    Product Specification M240HW01 V2 AU OPTRONICS CORPORATION 1.0 Handling Precautions Since front polarizer is easily damaged, pay attention not to scratch it. Be sure to turn off power supply when inserting or disconnecting from input connector. Wipe off water drop immediately. Long contact with water may cause discoloration or spots. When the panel surface is soiled, wipe it with absorbent cotton or other soft cloth.

  • Page 39: General Description

    Product Specification M240HW01 V2 AU OPTRONICS CORPORATION 2.0 General Description This specification applies to the 24 inch-wide Color a-Si TFT-LCD Module M240HW01.The display supports the Full HD - 1920(H) x 1080(V) screen format and 16.7M colors (RGB 6-bits + Hi-FRC data). All input signals are 2-channel LVDS interface and this module doesn’t contain an inverter board for backlight.

  • Page 40: Optical Characteristics

    Product Specification M240HW01 V2 AU OPTRONICS CORPORATION 2.2 Optical Characteristics The optical characteristics are measured under stable conditions at 25℃: Item Unit Conditions Min. Typ. Max. Note Horizontal (Right) CR = 10 (Left) Viewing Angle [degree] Vertical (Up) CR = 10 (Down) Contrast ratio Normal Direction...
  • Page 41 Product Specification M240HW01 V2 AU OPTRONICS CORPORATION Note 1: Measurement method The LCD module should be stabilized at given temperature for 30 minutes to avoid abrupt temperature change during measuring (at surface 35 ) ℃ . In order to stabilize the luminance, the measurement should be executed after lighting Backlight for 30 minutes in a stable, windless and dark room.
  • Page 42 Product Specification M240HW01 V2 AU OPTRONICS CORPORATION Note 3: Contrast ratio is measured by TOPCON SR-3 Note 4: Definition of Response time measured by Westar TRD-100A The output signals of photo detector are measured when the input signals are changed from “Full Black”...
  • Page 43 Product Specification M240HW01 V2 AU OPTRONICS CORPORATION CT = | YB – YA | / YA × 100 (%) Where YA = Luminance of measured location without gray level 0 pattern (cd/m2) YB = Luminance of measured location with gray level 0 pattern (cd/m2) Note 9: Test Patern: Subchecker Pattern measured by TOPCON SR-3 R G B R G B Gray Level = L127...

  • Page 44: Functional Block Diagram

    Product Specification M240HW01 V2 AU OPTRONICS CORPORATION 3.0 Functional Block Diagram The following diagram shows the functional block of the 24.0 inch Color TFT-LCD Module: LVDS I/F PCB Interface: JAE FI-XB30SSL-HF15 STM MSBKT2407P30HB Mating Type: FI-X30HL (Locked Type) document version 1.0 NUMPAGES |29}...

  • Page 45: Absolute Maximum Ratings

    Product Specification M240HW01 V2 AU OPTRONICS CORPORATION 4.0 Absolute Maximum Ratings Absolute maximum ratings of the module are as following: 4.1 TFT LCD Module Item Symbol Unit Conditions Logic/LCD Drive [Volt] Note 1,2 Voltage 4.2 Backlight Unit Item Symbol Unit Conditions CCFL Current ICFL...

  • Page 46: Electrical Characteristics

    Product Specification M240HW01 V2 AU OPTRONICS CORPORATION 5.0 Electrical characteristics 5.1 TFT LCD Module 5.1.1 Power Specification Input power specifications are as following: Symbol Parameter Unit Conditions Logic/LCD Drive [Volt] +/-10% Voltage VDD= 5.0V,All black Pattern, IDD1 Input Current At 60Hz VDD= 5.0V,All black Pattern, PDD1 VDD Power...

  • Page 47: Signal Electrical Characteristics

    Product Specification M240HW01 V2 AU OPTRONICS CORPORATION 5.1.2 Signal Electrical Characteristics Input signals shall be low or Hi-Z state when VDD is off. Please refer to specifications of SN75LVDS82DGG (Texas Instruments) in detail. Characteristics of each signal are as following: Symbol Parameter Units...

  • Page 48: Backlight Unit

    Product Specification M240HW01 V2 AU OPTRONICS CORPORATION 5.2 Backlight Unit Parameter guideline for CCFL Inverter is under stable conditions at 25 (Room Temperature): ℃ Parameter Min. Typ. Max. Unit Note CCFL Standard Current (ISCFL) [mA] rms CCFL Operation Current (IRCFL) [mA] rms CCFL Frequency (FCFL) [KHz]...
  • Page 49 Product Specification M240HW01 V2 AU OPTRONICS CORPORATION Note 2: CCFL standard current is measured at 25±2℃. Note 3: CCFL discharge frequency should be carefully determined to avoid interference between inverter and TFT LCD. Note 4: The frequency range will not affect lamp life and reliability characteristics. Note 5: CCFL inverter should be able to release power that has generating capacity exceeding 2000 volt.

  • Page 50: Signal Characteristic

    Product Specification M240HW01 V2 AU OPTRONICS CORPORATION 6.0 Signal Characteristic 6.1 Pixel Format Image Following figure shows the relationship of the input signals and LCD pixel format. 1919 1920 R G B R G B R G B R G B 1st Line R G B R G B R G B R G B...

  • Page 51: Signal Description

    Product Specification M240HW01 V2 AU OPTRONICS CORPORATION 6.3 Signal Description The module using one LVDS receiver SN75LVDS82(Texas Instruments). LVDS is a differential signal technology for LCD interface and high speed data transfer device. LVDS transmitters shall be SN75LVDS83(negative edge sampling). The first LVDS port(RxOxxx) transmits odd pixels while the second LVDS port(RxExxx) transmits even pixels.

  • Page 52: Timing Characteristics

    Product Specification M240HW01 V2 AU OPTRONICS CORPORATION Note1: Start from left side Note2: Input signals of odd and even clock shall be the same timing. 6.4 Timing Characteristics Basically, interface timing described here is not actual input timing of LCD module but close to output timing of SN75LVDS82DGG (Texas Instruments) or equivalent.

  • Page 53: Timing Diagram

    Product Specification M240HW01 V2 AU OPTRONICS CORPORATION 6.5 Timing diagram M pixel Tblk(v) Tdisp(v) Invalid Data Invalid Data RGB Data Line Line Line Line Line Line Tclk Tdisp(h) Tblk(h) RGB Data Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel...

  • Page 54: Power On/Off Sequence

    Product Specification M240HW01 V2 AU OPTRONICS CORPORATION 6.6 Power ON/OFF Sequence VDD power and lamp on/off sequence are as follows. Interface signals are also shown in the chart. Signals from any system shall be Hi-Z state or low level when VDD is off. Value Parameter Unit...

  • Page 55: Connector & Pin Assignment

    Product Specification M240HW01 V2 AU OPTRONICS CORPORATION 7.0 Connector & Pin Assignment Physical interface is described as for the connector on module. These connectors are capable of accommodating the following signals and will be following components. 7.1 TFT LCD Module Connector Name / Designation Interface Connector / Interface card Manufacturer...

  • Page 56: Backlight Unit

    Product Specification M240HW01 V2 AU OPTRONICS CORPORATION 7.2 Backlight Unit Physical interface is described as for the connector on module. These connectors are capable of accommodating the following signals and will be following components. Connector Name / Designation Lamp Connector / Backlight lamp Manufacturer CVILUX CP0502SL090...

  • Page 57: Reliability Test

    Product Specification M240HW01 V2 AU OPTRONICS CORPORATION 8.0 Reliability Test Environment test conditions are listed as following table. Items Required Condition Note Temperature Humidity Bias (THB) Ta= 50 , ℃ 80%RH, 300hours High Temperature Operation (HTO) Ta= 50 , ℃ 50%RH, 300hours Low Temperature Operation (LTO) Ta= 0 , 300hours ℃...

  • Page 58: Shipping Label

    Product Specification M240HW01 V2 AU OPTRONICS CORPORATION 9.0 Shipping Label The label is on the panel as shown below: Note 1: For Pb Free products, AUO will add for identification. Note 2: For RoHS compatible products, AUO will add for identification. Note 3: For China RoHS compatible products, AUO will add for identification.

  • Page 59: Mechanical Characteristics

    10.0 Mechanical Characteristics Ver 0.2...
  • Page 60 Ver 0.2...
  • Page 61 Ver 0.2...

  • Page 62: Exploded Diagram

    Acer Acer –LCD-D240H Exploded Diagram 3.1 D240H_SCREW_LIST Fixed ITEM Description Remark T(kg*cm) 509146306 SCREW,P,CROSS,W/WAS, 6.5±0.5 200R M3*6,Zn-Cc NVBD/PWRBD/HDMI 509216608 SCREW,F,CROSS,M4*8,BL 12±1 For Hingle toBack cover 110R ACK,NL,ROHS(NYLOK) 509412610 SCREW B CROSS T T-4*10 9.5±0.5 For Hingle to Stand Front 500R...

  • Page 63: Troubleshooting

    Acer Acer –LCD-D240H 04 Troubleshooting 4.1 Black Sreen Black Screen Check power supply: POWER Fail Pin 3, 4 of CN101 Check power supply: Check U101, For U102 U106 Check reset: Check C125, pin114 of U102 R133 Check Crystal waveform Check X101, C126,...
  • Page 64 Acer Acer –LCD-D240H 4.2 Bad Screen Bad Screen Check LVDS Workmanship cable Change LVDS LVDS cable NG cable Check Crystal: Check the pins Pin 114,126 of of U102 U102 Change X101, C114, C126...
  • Page 65 Acer Acer –LCD-D240H 4.3 White Sreen White Screen Check LVDS Workmanship Cable Insert OK? Change LVDS LVDS cable NG Cable Check VLCD is Check LVDS cable Panel NG +5V? Check Panel U102 Fail Enable of U102 Check Q101, Q104, Q102, R160, R162，R157...

  • Page 66: Spare Parts List

    05 Spare parts List 82424173A120R ACER PART NO. OEM PART NO DESCRIPTION 55.LJR0J.001 792381300720H PCBA,IF/B(V2,W/SPK,EMEA),LP2441-737 55.LJR0J.002 792381400710H PCBA,PI/B,W/SPK,LP2441-737 55.LEW0J.003 792381500000R PCBA,POWER KEYPAD/B,LP2441 ROHS 55.LEW0J.004 792381500010R PCBA,TOUCHPAD BOARD,LP2441 ROHS 55.LJR0J.003 792382400700H PCBA,CARD BOARD,LP2441-737 50.LEW0J.002 430303002230R HRN LVDS FFC 30P 166.5mm W/TASTE 50.LEW0J.003...
  • Page 67 60.LEW0J.002 714030022100R ASSY BEZEL ,LP2441 60.LEW0J.003 714011206200R ASSY STAND ,LP2441 60.LEW0J.004 714020018200R ASSY BASE,LP2441 60.LJR0J.002 701000018401R ASSY CHASSIS,DPF,LP2441 60.LEW0J.005 501020228600R HINGE COVER,LEFT , LP2441 60.LEW0J.006 501020228601R HINGE COVER,RIGHT , LP2441 23.LFV0J.001 618100200430R SPEAKER 2.5W4Ω 230mm&210mm R/G/B W/CASE LK.24005.019 631102240240H LCP 24"M240HW01-V2-00(A)(AUO)HF LK.24005.019 631102240250H LCP 24"M240HW01-V2-0A(A)(AUO)HF...

  • Page 68: Schematics And Layouts

    Acer Acer –LCD-D240H 06 Schematics and Layouts 6.1 IF BD Layout...
  • Page 69 Acer Acer –LCD-D240H 6.2 Power BD Layout...
  • Page 70 Acer Acer –LCD-D240H...
  • Page 71 Acer Acer –LCD-D240H 6.3 Keypad BD Layout...
  • Page 72 Acer Acer –LCD-D240H 6.4 Touchpad BD Layout 6.5 Card BD Layout...
  • Page 73 Acer Acer –LCD-D240H 6.5 Switching Mode Power Supply circuit...
  • Page 74 CF33V sd/ms/xd_33V CN302 CN303 SD0_CD CF/MD SD (CD) SD0_D2 SD (DAT2) SD0_D3 CF_D0 SD (DAT3) SD0_CMD CF_D1 R302 SD (CMD) CF_D2 R303 SD (GND) CF_D3 GPC13 STORAGE_PWE pull up SD (VCC) SD0_CLK CF_D4 GPC14 MS_D0 MS_D_0 R304 MS_D0 pull down SD (CLK) CF_D5 GPC15...

  • Page 75: Assembly And Disassembly

    07 Assembly and Disassembly Take out a panel Take out a chassis on the panel and assemble the power board and the chassis Assemble the panel and the bezel. Take out the main board and insert the FFC cable and keypad cable.
  • Page 76 Use a screwdriver to screw the 4 screws to Assemble the main board and the Card fix the main board and USB board. board with the chassis. MAIN BOARD Card BOARD S8: Use a screwdriver to screw the 1 Use a screwdriver to screw the 5 screws to screw to fix the HDMI connecter.
  • Page 77 Use a screwdriver to screw the 4 screws S11: Set up the speaker. to fix the VGA and DVI connecter. Red left and green right S12: Set up the keypad board and the S10: Fix the chassis in the bezel. touchpad board.
  • Page 78 S13: Fix the touchpad board and the keypad S15: Assemble the stand and fix it. board. Connect the two board S14: Assemble the back cover. S16: Assemble the left and right hinge cover.
  • Page 79 S17: Assemble the base with the stand.

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