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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 ) 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
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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
Swivel: 40 ° ( R:20 ° , L:20 ° ) VESA mounting holesOne type II CardBus PC Card slot
Multi-Sound System
MICAM FM Stereo (A2)
Power Source
Input voltage: 90 ~ 264 V, 47 ~ 63 Hz Input current: 1.5 A Power consumption: 150 Watts Stand-by: 5 Watts Max.
Remote Controllers
MICAM FM Stereo (A2)
Speaker
Internal speaker: 5 W * 2 stereo, volume adjustable
Others
On screen display adjustment function ISP ( In System Programming ) function available for revising driver easiInternal speaker: 5 W * 2 stereo, volume adjustable
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Chapter 1
System Block Diagram
System Block and Wiring Diagram
INVERTER
PANEL
connector 12pin
connector 4pin
panel-20pin
connector 10pin
connector 62pin
IO/B
Tuner SCART RGB SCART YUV
POWER/B
MAIN/B
connector 8pin
connector 7pin
connector
4pin
connector 12pin
connector 5pin
connector 8pin
AV 3
IR Recever
KEY/B
AUDIO/B
connector 2pin connector 3pin
SPEAKER-L
SPEAKER-R
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LCD Main Board Block Diagram
Audio Board Block Diagram
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Chapter 1
Board Layout
Board Layout is not ready as the service guide released.
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5
Outlook View
A general introduction to Acer LCD TV ports, functions and indicators.
Front panle view
# 1 2 3 4 Input
Item LCD screen Select source.
Description
When OSD is on: Press this button to confirm selection. Vol Down Vol Up Volumn Down. When OSD is on: Also functions the sam eas Left directional arrow. Volume Up. When OSD is on: Also functions the same as Right directional arrow. 5 6 7 8 9 Channel Down Channel Up Menu Power Remote Control Window Channel Down. When OSD is on: Also functins the sam as Down directional arrow. Channel Up. When OSD is on: Also functions the same as Up directioal arrow. Turn OSD menu ON/OFF Power ON/OFF Infrared Sensor (Do not block)
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Chapter 1
Rear panel view
# 1 2 3
Item RF Connector (TV Tuner) Input IAV1/SCART 1 In AV1/SCART Out! AV2/SCART 2 In AV2/SCART 2 Out
Description Connects to the antenna or cable service Select source. When OSD is on: Press this button to confirm selection. Volumn Down. When OSD is on: Also functions the sam eas Left directional arrow.
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Bottom view
# 1a 1b 2a 2b 2c 2d 3a/b AC In DVI-D In D-Sub In Audio In
Item AC Switch
Description Turns AC in power ON/OFF Connects to a power source Connects to PC DVI Out Connects to PC VGA Out In PC mode, connect to audio output of your PC or other devices with DVI or VGA connector Connects to another speaker Connect to the audio output (R/L) of your camera, camcorder or video game In TV mode, connect the audio (R/L) input of your VCR or PVR to record TV programs (Please set AV3 to "Out" in OSD). Connect the composite output of your camera, camcorder or video game. In TV mode, connect the composite input of your VCR or PVR to record TV programs (Please set AV3 to "Out" in OSD). Connect headphone
Audio Out AV3/Audio In (R/L) AV3/Audio Out (R/L)
3c
AV3/Video In AV3/Video Out
4
Headphone
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Chapter 1
Remote control
Item Power button DISPLAY MUTE TV AV SCART PC SLEEP Press to turn TV on/off.
Description Displays channel number and input source on the upper right-hand corner of the screen. Press once to mute the sound; press again to restore. Press to select TV mode. Press to select AV3 mode. Press to select SCART1/SCART2 mode Press one for VGA mode, press twice for DVI. Press to set a time period after which the TV shoud switch itself to standby. Press repeatedly to select the number of minutes.
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9
ZOOM
Press repeatedly to switch image between
Normal SRS
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. Scaling mode (4:3 / 16:9 / Panorama / Letterbox) Number keys from 0-9 Press to return to the previous channel. Press to return to the previous channel. Open Menu or leave Menu. Navigate up, down, left and right in the OSD menu / press OK to confirm. Press to select the sound system, displayed at the top right-hand corner. Press these buttons to increase and decrease the volume. Press these buttons to select the TV channel in sequence. Acer Empowering key (for Favorite Channels and Scenario Mode" on page 19. Switch between Normal/PIP/PBP/POP modes. See "Advanced Features" on page 18. Swap primary and sub screen in toggle. Toggle the active screen. Change position of subscreen in PIP mode. When in PIP mode: Change subscree size 25%, 37.5%, 50% When in POP mode; Change POP mode 1+5 / 1+12
WIDE Numberkeys RECALL ENTER MENU 4-way scroll key/OK MPX VOL (up/down) CH (up/down) e PIP/PBP/POP SWAP ACTIVE POSITION SIZE/MODE
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Chapter 1
Basic connection
Connecting the power cord
1. 2. 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.
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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.
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Chapter 1
Connecting a headphone
Connect headphone to the headphone input on the bottom of the TV set as shown below.
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Getting started watching your TV
Power On
a. b. Turn on AC power switch on bottom of TV. Press the power button on remote control.
Changing channels
1. Press 0-9 on the remote control to select a channel. The channel changes after 2 seconds. Press ENTER to select the channel immediately.
2.
You can also change the channels by pressing and holding the Channel Up/Down button on the remote control. Up will increase the number, while down will decrease the number.
Adjusting the volume
Adjust the volume using the VOL +/- button on the remote control. Up will increase the volume, while down will decrease the volume.
NOTE: You can also adjust these settings using the front control panel. Please see "Front panel view" on page 8 for details.
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Chapter 1
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.
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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. NOTE: You can also interact with these menus using the front panel controls. Navigating the OSD with Remote Control There are five main OSD menus. These are: Picture Empowering 1. , Audio , Settings , Options and
. Use the following method to easily navigate these menus.
Press the "Menu" button on the remote control or the "Menu" button on the control panel.
2.
Select your desired menu by using the Left/Right sides of the directional pad ot switch between the five menus.
3.
Use the directional pad to interact with the menu. The Up/Down directions will scroll through the menu options, while Left/Right will adjust the different settings (for example, in the Picture menu, settings such as brightness, contrast, etc). If there are no adjustments, press Enter to select.
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Chapter 1
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 INDEX SUBTITLE TELETEXT REVEAL SIZE MIX HOLD Color buttons (R/G/Y/B) Go to index page Show subtitle on the screen
Description
Press to switch from TV/AV to Teletext mode. Press to reveal hidden teletext information. Press once to zoom teletext page to 2X; press again to resume. Press to overlay teletext page on the TV image, i.e. subtitle Press to pause the current teletext page in multi-page viewing mode. Operates corresponding button on the teletext page.
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Advanced Features
PIP/PBP/POP
PIP (Picture in Picture)
1. 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.
2.
Press "swap" key to change the content between the primary and the subscreen.
3.
When in PIP mode, press "Position" key to select the location of the subscreen, from Upper Left > Upper Right> Lower Right> Lower Left, as shown in the image above.
PBP (PIcture by Picture)
Press "PIP/PBP/POP" key twic to display picture as shown in the image above. Press "Activate" to toggle the screen in focus and press TV/SCART/AV/PC or channel selection to change the content of the sub screen.
POP (Picture on Picture) 1. Press "Size/Mode" key to display the 1+ 12 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.
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1.
Press "Size/Mode key to display the 1 +5 picture on picture mode as shown in the image above.
2.
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. Enter a four digit PIN number using the number keys on your remote control. Use this number to adjust the Parental Control settings, to prevent access to certain channels. If you forget your PIN number, please enter 6163 to rest.
Empowering Key: Scenario Mode and Favorite Channels
Use the OSD to define your "e" Empowering key setting: Scenario mode and Favorite channel. The default value for the "e" key is the Scenario mode. Use the following method: Menu -> Empowering -> e key Setting. Chapter 1 19
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.
Favorite Channels
One the remote control, pressing the "e" Empowering key for less than 1 second will tobble TV programs sequentially according to your favorite list. There are five slots in which you can store TV programs. Press "e" Empowering key for more than 2 seconds. When current program is not stored in favorite list, pressing the "e" key for more than 2 seconds stores the TV program information at the bottom of the favorite list. If there is no empty slot in the favorite list, the first program will be wiped out and the new TV program is added at the bottom of the favorite list. Simply pu, it's "First in, first out". When the current program is stored in the favorite list, pressing "e" key for more than 2 seconds will remove the program from the favorite list. To view currently stored favorite channels, press the "e" Empowering key.
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Chapter 1
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. The range of operation is: CVBS and Y/C: PAL ( 4.43 M , 50 Hz ) B?G?D?K?H?I, PAL ( 4.43 M , 60 Hz ) SECAM D?K NTSC ( 3.58 M ), NTSC ( 4.43 M ), Japan ( 50 Hz ) TV Systems: PAL and SECAM system Receivable Full frequency range From channel E2 ( 48.25 MHz ) to channel E69 ( 855.25 MHz ) YUV inputs: YcbCr ( 480i ) YPbPr ( 480p?1080i?720p ) VGA and DVI-D inputs: Horizontal input frequency range: 30k Hz to 70k Hz Vertical input frequency range: 56 Hz to 85 Hz Max. Resolution: 1280 x 768 Down Scaling support: 1152 x 870 75 Hz 1280 x 960 60 / 85 Hz 1280 x 1024 60 / 75 / 85 Hz The LED shall indicate blue color and OSD will show " Out of Range " message within 5 seconds after signal is out of range or down scaling support from selected input. This LCD TV shall catch signal sources from TV?AV1?RGB?AV2?YUV?AV3?VGA and DVI-D automatically during power up, which it is unnecessary to select inputs from OSD or hot keys. The priority to catch signal sources shall be 1st) User selected source from hot key or OSD, 2nd) Last source used, 3rd) TV input ( last power down channel), 4th) AV1 RGB input, 5th) AV1 S input, 6th) AV1 CVBS input, 7th) AV2 RGB input, 8th) AV2 S input, 9th) AV2 CVBS input, 10th) AV2 YUV, 11th)AV3 input ( Set to be input from OSD ), 11th) VGA input, 12th) DVI-D input. The LCD TV shall complete selection and show media on screen within 5seconds ( including Auto Adjust ). The OSD will show " No Signal " within 3 seconds while there is missing signal from selected input. The OSD will show " No VGA Connection " within 5 seconds while VGA input is selected but has no connection on VGA port. The OSD will show " Go Into Power Save " within 5 seconds after meet condition of power saving mode. This LCD TV shall go into power saving state in 5 seconds later of showing " Go Into Power Save ". The LED shall indicate orange color during power saving mode. The AV1 input supports 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 takes priority. Chapter 1 21
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. While it is set to be output, AV3 would carry CVBS signal and stereo audio out from TV tuner.
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Chapter 1
Hardware Specifications and Configurations
Pin Definition Between Main Board and I/O Board
Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Teletext_RGB_B ( 6 ) Teletext_RGB_B ( 6 ) Teletext_RGB_B ( 6 ) Teletext_fast_blanking Teletext_start SCART_aspect_ratio_1 DAC_RST (1) TX_232 SVHS_2_C (3) SVHS_1_Return (3) SVHS_1_Y (3) CVBS_1_ GND_1_of_(3) Audio_Center_GNd_gn d (2) Earphone_for_subpictu re_L (2) Audio_Center_Gnd_gn d (2) Audio_Rear_L_R_Gnd _of_R (3) YUV_1_Pr ( 6 ) YUV_1_Pb ( 6 ) YUV_1_Y ( 6 ) Audio_Front_LR_Gnd_of_R (3) Teletext_Vs ( 3, from mainboard ) Teletext_RGB_B_Retur n (6) Teletext_RGB_G_Retur n (6) Teletext_RGB_R_Retur n (6) GND_2_of_(3) SCART_mode_det_1 RESET_I_O_Module RX_232 SVHS_2_Return ( 3 ) SVHS_2_Y ( 3 ) SVHS_1_C ( 3 ) CVBS_1_Return ( 2 ) CVBS_1_Signal (1) Specification `Blue' signal comes from Teletext decoder IC. `Green' signal comes from Teletext decoder IC. `Red' signal comes from Teletext decoder IC. Fast blanking signal for the use of Teletext decoder IC on I/O module. Main board issues it for the use of Teletext decoder IC on the I/O module. Aspect ratio indicator signal comes from pin-16 of ordinary SCART connector. Main board used this pin to reset I2C DAC on current I/O module. `TX' signal of UART `Chrominance' signal of SVHS-2 Return path paired with Y and C of SVHS-1. `Y' of SVHS signal set 1. CVBS-1 Power ground `Ground' path paired with audio `Center' Audio `Left' channel paired with sub-picture. Audio woofer signal. After decoding Dolby digital or other surround audio, digital receiver sends this woofer signal to LCDTV main board for further processing. 17 18 19 20 21 'Right' signal of audio rear channels. 'Pr' of YUV signal set 1. 'Pb' of YUV signal set 1. 'Y' of YUV signal set 1. 'Right' channel of surround audio. After decoding Dolby digital or other surround audio, digital receiver sends this signal to LCDTV main board for further processing. 22 23 24 25 26 27 28 29 30 31 32 33 34 Vertical Sync. Signal issued by LCDTV main board for use of Teletext decoder IC on the I/O module. 'Blue' signal return for Teletext decoder IC. Return path paired with 'Green' signal comes from Teletext decoder IC. Return path of 'Red' signal comes from Teletext decoder IC. Power ground SCART mode detection ( RGB or CVBS ) LCDTV main board uses this pin to reset all components inside the I/O module. 'RX' signal of UART Return path paired with Y and C of SVHS-2 'Y' of SVHS signal set 2. 'Chrominance' signal of SVHS-1. Return path for CVBS-1 CVBS-2
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Pin Definition Between Main Board and I/O Board
Item 35 Audio_Center_Gnd_sig nal (2) Earphone_for_subpictu re_R ( 2 ) Audio_Woofer_Gnd_gn d(2) Audio_Rear_L_R_Gnd _of_gnd ( 3 ) YUV_1_Pr_Return ( 6 ) YUV_1_Pb_Return ( 6 ) YUV_1_Y_Return ( 6 ) Audio_Front_L_R_Gnd _of_Gnd Teletext_Hs ( 3, from mainboard ) Teletext_Hs_Vs_return (3) TV_Out TV_R TV_L Audio_Mute 12V_max_1A_a ( 2 ) 12V_max_1A_b ( 2 ) 5V_max_1.5A_a ( 2 ) 5V_max_1.5A_b ( 2 ) USDA USCL ID_1 ID_2 GND_3_of_(3) Audio_Rear_L_R_Gnd _of_L ( 3 ) YUV_2_Pr ( 3 ) YUV_2_Pb ( 3 ) YUV_2_Y ( 3 ) Audio_Front_L_R_Gnd _of_L ( 3 ) Specification 'Center' signal of surround audio channels. After decoding Dolby digital or other surround audio, digital receiver sends this signal to LCDTV main board for further processing. 36 37 38 Audio ' Right ' channel paired with sub-picture. Ground signal paired with audio ' Woofer ' channel. Ground signal of rear left and right audio channels. After decoding Dolby digital or other surround audio, digital receiver sends this signal to LCDTV main board for further processing. 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 Return path of ' Pr ' signal. It belongs to YUV signal set -1. Return path of ' Pb ' signal. It belongs to YUV signal set -1. Return path of ' Y ' signal. It belongs to YUV signal set -1. 'Ground' path paired with audio front "Left" and "Right" Horizontal Sync signal. LCDTV main board issues it for the use of Teletext decoder IC on the I/O module. Common return path of horizontal and vertical sync signals which are issued by LCDTV main board Video output for signal set AV3_OUT Audio 'Right' channel of signal set AV3_OUT Audio 'Left' channel of signal set AV3_OUT Disable all the analog audio signals from I/O modules Power pins which supply +12V to digital receiver. Power pins which supply +12V to digital receiver. Power pins which supply +5V to digital receiver. Power pins which supply +5V to digital receiver. SDA signal issued by LCDTV main board to access ICs and modules of analog option SCL signal issued by LCDTV main board to access ICs and modules of analog option Identification signal -1 Identification signal -2 Power ground Audio 'Left` channel paired with sub-picture. 'Pr' signal of YUV-2 signal set. 'Pb' signal of YUV-2 signal set. 'Y ' signal of YUV-2 signal set. 'Left' signal of audio rear channels.
LCD
Item Vendor & model name LCD display area (diagonal, inch) Display technology QDI 26 (660.5mm) TFT Specification
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Chapter 1
LCD
Item Resolution Active Area [mm] Pixel Pitch [mm] Pixel Arrangement Display mode Surface treatment Weight [grams] Physical Size [mm] Display Color Input signal Back-light White Luminance [cd/m2] Contrast Ratio Response time(ms) Optical Rise Time/Fall Time [msec] Viewing Angle Power Consumption [Watt] Electrical Interface Temperature Range [degree C] Operating Storage (Shipping) 0 to +50 -20 to +60 595.4 x 366.4 x 38 0.4425 x 0.4425 R,G,B Vertical Stripe Normally white Antiglare, Hard-coating (3H) 3500 Max. 261.0(W) x 198.0(H) x 5.0(D) Typ. 16.7M colors 1-ch LVDS 14 CCFLS 450 600Typ. 25 20Typ., 5 MAX. N/A 84 4 pairs, single LVDS Specification WXGA (1280 horizontal X768 vertical pixel array)
IMPORTANT:For more detailed product specifications, please refer to "Acer AL2671 product specifications". You can double click Acrobat Document icon below to read the document. The document is provided by our vendor, please keep it as internal use only.
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Chapter 1
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 tweezers NOTE: The screws for the different components vary in size. During the disassembly process, group the screws with the corresponding components to avoid mismatch when putting back the components. When you remove the stripe cover, please be careful not to scrape the cover.
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General Information
Before You Begin
Before proceeding with the disassembly procedure, make sure that you do the following: 1. 2. 3. 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.
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Chapter 3
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.
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Chapter 3
Removing the TV Stand Module
1. 2. Remove the four screws holding the TV stand module. Detach the TV stand module.
3. 4.
Detach the TV stand module. Separate the base and the swivel assembly.
Removing the Tuner Box Module
1. 2. Remove the two screws that secure the tunder box module. Then detach the tunder box module from the LCD TV carefully.
3. 4.
Remove the three screws holding the tuner box cover. Remove the tuner box cover.
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Removing the Back Cover and Wall Mount Assembly
1. 2. Remove the ten screws that fasten the back cover. Remove the back cover.
3. 4.
Remove the five screws holding the wall mount assembly. Remove another five screws that secure the wall mount assembly.
5. 6. 7.
Remove four screw nuts holding the wall mount assembly as shown. Then remove the last screw that secure the wall mount assembly. Detach the wall mount assembly.
Removing the Power Board
1. 2. Disconnect the cables (audio to power board; on the right/main board to power board; on the left). Remove the three screws that fasten the power board.
3. 46
Remove another three screws holding power board. Chapter 3
4. 5.
Disconnect the inverter cable. Remove the power board.
Removing the Audio Board and the Main Board
1. 2. 3. Disconnect all cables connected to the audio board. Remove the four screws fastening the audio board. Then remove the audio board.
4. 5.
Take out the cables from the cable clip as shown. Disconnect all cables connected to the main board.
6. 7.
Remove the four screws holding the main board heatsink. Then detach the main board heatsink carefully.
8. 9.
Remove one screw that secures the I/O bracket. Detach the main board from the LCD TV.
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10. Remove the two screws holding the I/O bracket. 11. Then detach the I/O bracket from the LCD TV.
Removing the Speakers
1. 2. Tear off the tape that fastens the left speaker cable. Disconnect the left speaker cable.
3. 4.
Remove the four screws holding the left speaker. Then remove the left speaker from the LCD TV.
5. 6.
Tear off the tape that fastens the right speaker cable. Disconnect the right speaker cable.
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Chapter 3
7. 8.
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
1. 2. 3. 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.
4. 5. 6.
Remove the two screws holding the AV3 cable. Take off the AV3 cable. Remove the four screws that fasten the button board and the ground wire.
7. 8.
Turn over the button and disconnect the cables connected to the button board. Take the cable out of the cable clip.
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9.
Remove one screw holding the cable then remove the cable.
Removing the LCD Module
1. 2. 3. Disconnect the inverter cable. Tear off the tape on the inverter shielding. Remove the two screws holding the LCD right bracket.
4. 5. 6.
Remove the LCD right bracket. Remove the three screws holding the inverter shielding. Detach the inverter shielding carefully.
7. 8. 9.
Remove the eight screws that secure the PCB tray. Detach the PCB tray as shown. Then disconnect the cable (main board to LCD).
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Chapter 3
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. Detach the LCD left bracket.
16. Remove the four screws that secure the LCD lower chassis. 17. Remove the four screws that secure the LCD upper chassis. 18. Detach the LCD module from the LCD front cover. Note: The LCD module is heavy, please hold it with enough strength.
19. Remove the four screws that secure the LCD upper chassis. 20. Detach the LCD upper chassis.
21. Remove the four screws holding the LCD lower chassis.
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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.
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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. 1. 2. 3. 4. Duplicate symptom and obtain the failing symptoms in as much detail as possible. Distinguish symptom. Verify the symptoms by attempting to re-create the failure by running the diagnostic test or by repeating the same operation. Disassemble and assemble the unit without any power sources. If any problem occurs, you can perform visual inspection before you fellow this chapter's instructions. You can check the following: power cords are properly connected and secured; there are no obvious shorts or opens; there are no obviously burned or heated components; all components appear normal. 5. Use the following flow chart determine which part to be replaced.
NOTE: N.G. in the below figures means "No Good".
Start Start No No Yes Yes
Does the unit Power on
No power on
LCD Fail
DDC / POP PIP Fail RF No Signal / HDTV Fail Unit Hang Up Suddenly
AV1,AV2 Speaker No Sound
TV Channel Fail
Remote Control Fail
Button Function Fail
AV3 Speaker No Sound
1 2 3 4 5 6 7 8 9 10 11
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11
Power Cord Power Cord
N.G
Replacement
Power Cable
N.G
Replacement
Power Board
N.G
Replacement
Main Bard
N.G
Replacement
Audio Board
N.G
Replacement
END
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Chapter 4
2
2 LCD No Display
LCD No Back Light
CCFT Cable
N.G
Replacement
N.G
LCD Cable
Inverter Board
N.G
Replacement
N.G
Main Board
LCD Panel
N.G
N.G
Replacement
LCD Panel
Main Board
N.G
Replacement
END
END
Chapter 4
59
33
Button Board
N.G
Replacement
I/O Board
N.G
Replacement
Main Board
N.G
Replacement
END
4
Main Board
N.G
Replacement
END
60
Chapter 4
55
IR Cable
N.G
Replacement
IR board
N.G
Replacement
Main Board
N.G
Replacement
END
6
IO Board
N.G
Replacement
Main Board
N.G
Replacement
END
Chapter 4
61
77
Button Cable
N.G
Replacement
Button Board
N.G
Replacement
Main Board
N.G
Replacement
END
8
Power Board
N.G
Replacement
Main Board
N.G
Replacement
END
62
Chapter 4
99
AV3 Cable AV3 Cable
N.G
Replacement
AV3 Board
N.G
Replacement
Audio Board
N.G
Replacement
Main Bard
N.G
Replacement
END
Chapter 4
63
10 10
Audio Cable Audio Cable
N.G
Replacement
Speaker
N.G
Replacement
Audio Board
N.G
Replacement
Main Board
N.G
Replacement
IO Board
N.G
Replacement
END
64
Chapter 4
11 11
Button Cable Button Cable
N.G
Replacement
Button Board
N.G
Replacement
IO Board
N.G
Replacement
Main Bard
N.G
Replacement
END
Chapter 4
65
66
Chapter 4
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. For whatever reasons a part number change is made, it will not be noted on the Service Guide. For ACER AUTHORIZED SERVICE PROVIDERS, your Acer office may have a DIFFERENT part number code from those given in the FRU list of this printed Service Guide. You MUST use the local FRU list provided by your regional Acer office to order FRU parts for repair and service of customer machines. 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.
Chapter 6
83
Exploded Diagram
Acer
84
Chapter 6
Picture NS NS
Partname (Description) REMOTE CONTROLLER TUNER MODULE - PAL (VA1 TELTEXT BOARD ASSY)
Part Number 25.M01V7.001 6M.M01V7.002
1
MAIN BOARD (VT3 M/B ASSY(FOR VA1)(EU))
55.M01V7.001
15
POWER BOARD (ADP/PWR 157W,DPS-157CP A(90~264VAC))
55.M01V7.002
3
AUDIO BOARD (VV3 AUDIO/B ASSY(FOR VA1)WOW)
55.M01V7.003
14
INVERTER BOARD (INV MODULE(TKI)VT2(24V,V=1000V))
55.M01V7.004
5
AV3 BOARD (VT3 EARPHONE/B ASSY)
55.M01V7.005
4
BUTTON BOARD (VA1 BUTTON BOARD ASSY)
55.M01V7.005
NS NS
POWER CODE UK 3P 1.8M POWER CODE ITALY 3P 1.8M
27.M01V7.001 27.M01V7.002
Chapter 6
85
Picture NS 23
Partname (Description) POWER CODE EU 3P 1.8M CABLE - SPEAKER R ( RED_BLACK COLOR)
Part Number 27.M01V7.003 50.M01V7.001
22
CABLE - SPEAKER L ( WHITE_BLACK COLOR)
50.M01V7.002
20
CABLE - ADUIO TO POWER BOARD 8P/7P
50.M01V7.003
21
CABLE - MB TO POWER BOARD 10P
50.M01V7.004
19
INVERTER CABLE 3 CON (12P/4P/6P)
50.M01V7.005
17
CABLE - MB TO ADUIO BOARD 11P
50.M01V7.006
86
Chapter 6
Picture 24
Partname (Description) CABLE - MB TO LCD
Part Number 50.M01V7.007
18
CABLE - MB TO AV3 6P/4P
50.M01V7.009
25
CABLE - MB TO BUTTON BOARD (13P/10P)
50.M01V7.009
16
CABLE - IB TO GROUND
50.M01V7.011
11
FUNCTION BUTTON
42.M01V7.002
9 12
STAND SWIVEL ASSY (Please note that the image includes stand swivel assy and stand base assy) STAND BASE ASSY(Please note that the image includes stand swivel assy and stand base assy)
60.M01V7.001 60.M01V7.002
30 NS
TUNER BOX COVER FRONT COVER
42.M01V7.001 60.M01V7.003
29
BACK COVER
60.M01V7.004
Chapter 6
87
Picture 43 I/O SHIELDING
Partname (Description)
Part Number 33.M01V7.001
8
MB_POWER BOARD SHIELDING
33.M01V7.002
38
INVERTER SHIELDNG
33.M01V7.003
37
PCB TRAY
33.M01V7.004
45
INVERTER INSULATOR
47.M01V7.001
35
LCD CHASSIS - UPPER
33.M01V7.005
36
LCD CHASSIS - DOWN
33.M01V7.006
42
LCD BRACKET - L
33.M01V7.007
41
LCD BRACKET - R
33.M01V7.008
88
Chapter 6
Picture 47 48 NS 7
Partname (Description) GASKET(SHORT) - LCD GASKET(LONG) - LCD MAIN BOARD HEATSINK WALL MOUNT ASSY
Part Number 47.M01V7.002 47.M01V7.003 34.M01V7.003 60.M01V7.005
13
LCD TFT 26 IN. QDI QD26WL01
56.M01V7.001
49 NS NS 27
PANEL CONTACT PAD PE BAG FOR PANEL CARTON FOR PANEL STANDARD PACKING (4 PCS) SPEAKER - R
47.M01V7.004 47.M01V7.005 47.M01V7.007 23.M01V7.001
26
SPEAKER - L
23.M01V7.002
51 46 40 44 39 34 33 28 NS 52
SCREW M3*5-P-NI-+ SCREW M4*6 P (NI) SCREW M4*12 B (NI) (NYLOK) SCREW M4*25 B (NI) SCREW 3 X 20.4-B (NI) SCREW T3*8 P (NI) SCREW T4*12 B (NI) SCREW 4-40 UNC P-NI IO NUT SCREW M3*16 P(NI)
86.M01V7.001 86.M01V7.002 86.M01V7.003 86.M01V7.004 86.M01V7.006 86.M01V7.007 86.M01V7.008 86.M01V7.009 86.M01V7.010 86.M01V7.011
Chapter 6
89
Picture NS
Partname (Description) SCREW T3*12 P (NI)
Part Number 86.M01V7.012
90
Chapter 6
Chapter 6
91