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Acer AL2671W Service Manual

Al2671w service guide.
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System Specifications
Features
This LCD TV was designed with the user in mind. Here are just a few of its many features:
Benefits
Max. resolution: 1280x768
14 CCFLs Backlight system
Display area: 26 inches ( 660.5 mm ) diagonal
Display color: 16.7 M colors
Input Signal: 1-ch LVDS
Contrast ratio: 600:1 ( Typical )
Brightness: 450 cd/m2 ( Typical )
Response Time: 16 ms
Viewing angle: 85 ( L ) / 85 ( R ), 85 ( U ) / 85 ( D )Display
LCD Panel
Max. resolution: 1280x768
14 CCFLs Backlight system
Display area: 26 inches ( 660.5 mm ) diagonal
Display color: 16.7 M colors
Input Signal: 1-ch LVDS
Contrast ratio: 600:1 ( Typical )
Brightness: 450 cd/m2 ( Typical )
Response Time: 16 ms
Viewing angle: 85 ( L ) / 85 ( R ), 85 ( U ) / 85 ( D )Display
I/O Functions
Connector Type:
(1) 21 pin Euro-SCART ( RGB ) for Video, S-Video, R.G.B. and Audio
(2)
21 pin Euro-SCART ( YUV/RGB ) for Video, S-Video, YPbPr, YCbCr and Audio
(3) RCA jack for Video and Audio 3
(4) 15 pin D-Sub
(5) 24 pin DVD/HDCP
TV input: DIN45325 ( IEC169-2 ) Terminal
Audio input : Earphone jack
Audio output : Earphone jack
Video Functions
Support PAL / NTSC / SECAM video format
Support 480i/576i, 480p/576p, 1080i and 720p format
Chapter 1
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Chapter 1
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   Summary of Contents for Acer AL2671W

  • Page 1 Chapter 1 System Specifications Features This LCD TV was designed with the user in mind. Here are just a few of its many features: Benefits Max. resolution: 1280x768 14 CCFLs Backlight system Display area: 26 inches ( 660.5 mm ) diagonal Display color: 16.7 M colors Input Signal: 1-ch LVDS Contrast ratio: 600:1 ( Typical )
  • Page 2 Build in Teletext functions Build in Dynamic adaptive smoothing filter Build in Dynamic temporal frame-filtering Noise Reduction Build in Dynamic motion and edge adaptive De-interlacing Film mode 3:2 & 2:2 pull down Screen display model 16:9 / 4:3 / panorama / letterBox/zoom1/zoom2 / PIP / PBP/POP Mechanical °...
  • Page 3: System Block Diagram

    System Block Diagram System Block and Wiring Diagram INVERTER PANEL connector 12pin connector 4pin panel-20pin IO/B Tuner POWER/B MAIN/B SCART RGB SCART YUV connector 8pin connector 7pin connector 12pin connector 5pin connector 8pin AV 3 IR Recever KEY/B AUDIO/B connector 2pin connector 3pin SPEAKER-L SPEAKER-R...
  • Page 4 LCD Main Board Block Diagram Audio Board Block Diagram Chapter 1...
  • Page 5 Board Layout Board Layout is not ready as the service guide released. Chapter 1...
  • Page 6 Outlook View A general introduction to Acer LCD TV ports, functions and indicators. Front panle view Item Description LCD screen Input Select source. When OSD is on: Press this button to confirm selection. Vol Down Volumn Down. When OSD is on: Also functions the sam eas Left directional arrow. Vol Up Volume Up.
  • Page 7: Rear Panel View

    Rear panel view Item Description RF Connector (TV Connects to the antenna or cable service Tuner) Input IAV1/SCART 1 In Select source. AV1/SCART Out! When OSD is on: Press this button to confirm selection. AV2/SCART 2 In Volumn Down. AV2/SCART 2 Out When OSD is on: Also functions the sam eas Left directional arrow.
  • Page 8: Bottom View

    Bottom view Item Description AC Switch Turns AC in power ON/OFF AC In Connects to a power source DVI-D In Connects to PC DVI Out D-Sub In Connects to PC VGA Out Audio In In PC mode, connect to audio output of your PC or other devices with DVI or VGA connector Audio Out Connects to another speaker...
  • Page 9: Remote Control

    Remote control Item Description Power button Press to turn TV on/off. DISPLAY Displays channel number and input source on the upper right-hand corner of the screen. MUTE Press once to mute the sound; press again to restore. Press to select TV mode. Press to select AV3 mode.
  • Page 10 ZOOM Press repeatedly to switch image between Normal Zoon 1 (1/.85:1) Zoon 2 (2.35:1) Press to select WOW, TruBass, 3D Stereo, “Off” modes sequentially. SRS is a technology to enhance 3D sound, bass performance and to produce a wider sound field. WIDE Scaling mode (4:3 / 16:9 / Panorama / Letterbox) Numberkeys...
  • Page 11: Basic Connection

    Basic connection Connecting the power cord Connect the AC cord into the AC input on the back of the set. Connect the male plug to the wall outlet as shown. Connecting an antenna Connect the outdoor antenna cable lead-in to the antenna terminal on the back of the TV set as shown. Connecting VCR/DVD/AV equipment with a SCART-SCART cable Connect SCART-SCART cable as shown below.
  • Page 12 Connecting VCR/DVD/AV equipment with a SCART-component/AV cable Connect SCART-component/AV cable to SCART2 port as shown below. Connecting a camera, camcorder or video game Connect your camera or camcorder to the Video/Audio ports on the bottom of the TV set shown below. Chapter 1...
  • Page 13: Connecting A Headphone

    Connecting a headphone Connect headphone to the headphone input on the bottom of the TV set as shown below. Chapter 1...
  • Page 14: Getting Started Watching Your Tv

    Getting started watching your TV Power On Turn on AC power switch on bottom of TV. Press the power button on remote control. Changing channels Press 0-9 on the remote control to select a channel. The channel changes after 2 seconds. Press ENTER to select the channel immediately.
  • Page 15: Scanning The Channels

    Scanning the channels The first time you use your TV, use the following method: Menu -> Settings -> Channel settings -> Scan -> “Yes”. The TV will auto-detect available channels and store them in memory. NOTE: The first time you access the OSD, a language setting subwindow will pop up, and you will be asked to choose your language settings.
  • Page 16: Osd Navigation

    OSD Navigation Many of the advanced settings and adjustments are available through using the OSD (on screen display) menus, as shown in the example screenshot below. Basic operations required ot navigate these menus (Picture, Audio, Settings, Options, Empowering) are described in this section. The first time you access the OSD, you will be asked to choose your language settings.
  • Page 17 Teletext Most TV channels also broadcast information via the teletext feature. This Acer LCD TV has 252 pages of memory which will store pages and subpages, thereby reducing waiting time. The teletext buttons on the remote control are listed below. Item Description INDEX...
  • Page 18: Advanced Features

    Advanced Features PIP/PBP/POP PIP (Picture in Picture) Press “PIP/PBP/POP” key once to display picture in picture as shown in the image above. Press “Active” key to switch between main display pictures, and press TV/SCART/AV/PC or channel selection to change the content of the subscree. Press “swap”...
  • Page 19: Parental Control

    Press “Size/Mode key to display the 1 +5 picture on picture mode as shown in the image above. Press “Activate” key to toggle focus on subscreen and press TV/SCART/AV/PC or channel selection to change the content of the subscreen. Parental Control When in TV mode, you can find a Parental Control feature in the Options menu.
  • Page 20: Scenario Mode

    Choose between “Favorite channel” or “Scenario Mode”. Now, when you press the “e” key, your chosen selection will be accessed. Scenario Mode Press the “e” Empowering key and use the Scenario Mode to select pre-defined audio and video settings for optimal enjoyment of the following scenarios: Standard, Movie, Sport, Concert, Game, User.
  • Page 21 Display Electrical and Functional Specificatons This LCD TV shall have the ability to operate under following range with stable blue color of LED indicated. Any signal outside of the limits ( any combination ) shall not cause any damage to the unit or driving source.
  • Page 22 The AV2 input support both of S-video and CVBS video inputs. If both of the S-video and CVBS video inputs are connected with cables, the S-video input take priority but signal quality has problems because you connect CVBS with S-video at the same time. The AV3 could be set either input or TV output from TV OSD menu.
  • Page 23 Hardware Specifications and Configurations Pin Definition Between Main Board and I/O Board Item Specification Teletext_RGB_B ( 6 ) ‘Blue’ signal comes from Teletext decoder IC. Teletext_RGB_B ( 6 ) ‘Green’ signal comes from Teletext decoder IC. Teletext_RGB_B ( 6 ) ‘Red’...
  • Page 24 Pin Definition Between Main Board and I/O Board Item Specification Audio_Center_Gnd_sig 'Center' signal of surround audio channels. nal (2) After decoding Dolby digital or other surround audio, digital receiver sends this signal to LCDTV main board for further processing. Earphone_for_subpictu Audio ' Right ' channel paired with sub-picture.
  • Page 25 Item Specification Resolution WXGA (1280 horizontal X768 vertical pixel array) Active Area [mm] 595.4 x 366.4 x 38 Pixel Pitch [mm] 0.4425 x 0.4425 Pixel Arrangement R,G,B Vertical Stripe Display mode Normally white Surface treatment Antiglare, Hard-coating (3H) Weight [grams] 3500 Max.
  • Page 26 Chapter 1...
  • Page 27 Chapter 3 Machine Disassembly and Replacement This chapter contains step-by-step procedures on how to disassemble the notebook computer for maintenance and troubleshooting. To disassemble the computer, you need the following tools: Wrist grounding strap and conductive mat for preventing electrostatic discharge small Philips screwdriver flat head screwdriver Philips screwdriver...
  • Page 28: General Information

    General Information Before You Begin Before proceeding with the disassembly procedure, make sure that you do the following: Turn off the power to the system and all peripherals. Unplug the AC adapter and all power and signal cables from the system. Remove the battery pack.
  • Page 29 Disassembly Procedure Flowchart The flowchart on the succeeding page gives you a graphic representation on the entire disassembly sequence and instructs you on the components that need to be removed during servicing. For example, if you want to remove the system board, you must first remove the keyboard, then disassemble the inside assembly frame in that order.
  • Page 30 Chapter 3...
  • Page 31 Removing the TV Stand Module Remove the four screws holding the TV stand module. Detach the TV stand module. Detach the TV stand module. Separate the base and the swivel assembly. Removing the Tuner Box Module Remove the two screws that secure the tunder box module. Then detach the tunder box module from the LCD TV carefully.
  • Page 32 Removing the Back Cover and Wall Mount Assembly Remove the ten screws that fasten the back cover. Remove the back cover. Remove the five screws holding the wall mount assembly. Remove another five screws that secure the wall mount assembly. Remove four screw nuts holding the wall mount assembly as shown.
  • Page 33 Disconnect the inverter cable. Remove the power board. Removing the Audio Board and the Main Board Disconnect all cables connected to the audio board. Remove the four screws fastening the audio board. Then remove the audio board. Take out the cables from the cable clip as shown. Disconnect all cables connected to the main board.
  • Page 34: Removing The Speakers

    10. Remove the two screws holding the I/O bracket. 11. Then detach the I/O bracket from the LCD TV. Removing the Speakers Tear off the tape that fastens the left speaker cable. Disconnect the left speaker cable. Remove the four screws holding the left speaker. Then remove the left speaker from the LCD TV.
  • Page 35 Remove the four screws holding the right speaker. Then remove the right speaker from the LCD TV. Removing the AV3 Board and the Button Board Remove the four screws holding the ground wire and the AV3 board. Turn over the AV3 board as shown. Disconnect the cables connected to the AV3 board then remove the AV3 board.
  • Page 36 Remove one screw holding the cable then remove the cable. Removing the LCD Module Disconnect the inverter cable. Tear off the tape on the inverter shielding. Remove the two screws holding the LCD right bracket. Remove the LCD right bracket. Remove the three screws holding the inverter shielding.
  • Page 37 10. Disconnect the inverter board cable one by one. 11. Disconnect the inverter board cable on the another side as shown. 12. Remove the five screws holding the inverter board. 13. Then detach the inverter board. 14. Remove the two screws that secure the LCD left bracket. 15.
  • Page 38 22. Detach the LCD lower chassis. 23. Detach the LCD button kit as shown. (LCD button) 24. Take the LCD button kit out off the front cover. 25. Take the LCD button kit out off the front cover. Note: LCD button kit has three small parts. Chapter 3...
  • Page 39: Troubleshooting

    Chapter 4 Troubleshooting Use the following procedure as a guide for Acer LCD TV AL2671W problems. NOTE: The diagnostic tests are intended to test this model. Non-Acer products, prototype cards, or modified options can give false errors and invalid system responses.
  • Page 40 Power Cord Power Cord Replacement Replacement Power Cord Power Cord Power Cable Power Cable Replacement Replacement Power Board Power Board Replacement Replacement Main Bard Main Bard Replacement Replacement Audio Board Audio Board Replacement Replacement Chapter 4...
  • Page 41 LCD No Display LCD No Display LCD No Back Light LCD No Back Light CCFT Cable CCFT Cable LCD Cable LCD Cable Replacement Replacement Inverter Board Inverter Board Main Board Main Board Replacement Replacement Replacement Replacement LCD Panel LCD Panel LCD Panel LCD Panel Main Board...
  • Page 42 Button Board Button Board Replacement Replacement I/O Board I/O Board Replacement Replacement Main Board Main Board Replacement Replacement Main Board Main Board Replacement Replacement Chapter 4...
  • Page 43 IR Cable IR Cable Replacement Replacement IR board IR board Replacement Replacement Main Board Main Board Replacement Replacement IO Board IO Board Replacement Replacement Main Board Main Board Replacement Replacement Chapter 4...
  • Page 44 Button Cable Button Cable Replacement Replacement Button Board Button Board Replacement Replacement Main Board Main Board Replacement Replacement Power Board Power Board Replacement Replacement Main Board Main Board Replacement Replacement Chapter 4...
  • Page 45 AV3 Cable AV3 Cable Replacement Replacement AV3 Cable AV3 Cable AV3 Board AV3 Board Replacement Replacement Audio Board Audio Board Replacement Replacement Main Bard Main Bard Replacement Replacement Chapter 4...
  • Page 46 Audio Cable Audio Cable Replacement Replacement Audio Cable Audio Cable Speaker Speaker Replacement Replacement Audio Board Audio Board Replacement Replacement Main Board Main Board Replacement Replacement IO Board IO Board Replacement Replacement Chapter 4...
  • Page 47 Button Cable Button Cable Replacement Replacement Button Cable Button Cable Button Board Button Board Replacement Replacement IO Board IO Board Replacement Replacement Main Bard Main Bard Replacement Replacement Chapter 4...
  • Page 48 Chapter 4...
  • Page 49 Chapter 6 FRU (Field Replaceable Unit) List This chapter gives you the FRU (Field Replaceable Unit) listing in global configurations of AL2671W. Refer to this chapter whenever ordering for parts to repair or for RMA (Return Merchandise Authorization). Please note that WHEN ORDERING FRU PARTS, you should check the most up-to-date information available on your regional web or channel.
  • Page 50: Exploded Diagram

    Exploded Diagram Chapter 6...
  • Page 51 Picture Partname (Description) Part Number REMOTE CONTROLLER 25.M01V7.001 TUNER MODULE - PAL (VA1 TELTEXT BOARD ASSY) 6M.M01V7.002 MAIN BOARD (VT3 M/B ASSY(FOR VA1)(EU)<MB0003>) 55.M01V7.001 POWER BOARD (ADP/PWR 157W,DPS-157CP 55.M01V7.002 A(90~264VAC)) AUDIO BOARD (VV3 AUDIO/B ASSY(FOR VA1)WOW) 55.M01V7.003 INVERTER BOARD (INV 55.M01V7.004 MODULE(TKI)VT2(24V,V=1000V)) AV3 BOARD (VT3 EARPHONE/B ASSY)
  • Page 52 Picture Partname (Description) Part Number POWER CODE EU 3P 1.8M 27.M01V7.003 CABLE - SPEAKER R ( RED_BLACK COLOR) 50.M01V7.001 CABLE - SPEAKER L ( WHITE_BLACK COLOR) 50.M01V7.002 CABLE - ADUIO TO POWER BOARD 8P/7P 50.M01V7.003 CABLE - MB TO POWER BOARD 10P 50.M01V7.004 INVERTER CABLE 3 CON (12P/4P/6P) 50.M01V7.005...
  • Page 53 Picture Partname (Description) Part Number CABLE - MB TO LCD 50.M01V7.007 CABLE - MB TO AV3 6P/4P 50.M01V7.009 CABLE - MB TO BUTTON BOARD (13P/10P) 50.M01V7.009 CABLE - IB TO GROUND 50.M01V7.011 FUNCTION BUTTON 42.M01V7.002 STAND SWIVEL ASSY (Please note that the image 60.M01V7.001 includes stand swivel assy and stand base assy) STAND BASE ASSY(Please note that the image includes...
  • Page 54 Picture Partname (Description) Part Number I/O SHIELDING 33.M01V7.001 MB_POWER BOARD SHIELDING 33.M01V7.002 INVERTER SHIELDNG 33.M01V7.003 PCB TRAY 33.M01V7.004 INVERTER INSULATOR 47.M01V7.001 LCD CHASSIS - UPPER 33.M01V7.005 LCD CHASSIS - DOWN 33.M01V7.006 LCD BRACKET - L 33.M01V7.007 LCD BRACKET - R 33.M01V7.008 Chapter 6...
  • Page 55 Picture Partname (Description) Part Number GASKET(SHORT) - LCD 47.M01V7.002 GASKET(LONG) - LCD 47.M01V7.003 MAIN BOARD HEATSINK 34.M01V7.003 WALL MOUNT ASSY 60.M01V7.005 LCD TFT 26 IN. QDI QD26WL01 56.M01V7.001 PANEL CONTACT PAD 47.M01V7.004 PE BAG FOR PANEL 47.M01V7.005 CARTON FOR PANEL STANDARD PACKING (4 PCS) 47.M01V7.007 SPEAKER - R 23.M01V7.001...
  • Page 56 Picture Partname (Description) Part Number SCREW T3*12 P (NI) 86.M01V7.012 Chapter 6...
  • Page 57 Chapter 6...

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