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AT3705 Service Guide Service guide files and updates are available on the AIPG/CSD web; for more information, please refer to http://csd.acer.com.tw PRINTED IN TAIWAN...
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Conventions The following conventions are used in this manual: Screen messages NOTE WARNING CAUTION IMPORTANT Denotes actual messages that appear on screen. Gives bits and pieces of additional information related to the current topic. Alerts you to any damage that might result from doing or not doing specific actions.
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DIFFERENT part number code to those given in the FRU list of this printed Service Guide. You MUST use the list provided by your regional Acer office to order FRU parts for repair and service of customer machines.
Sound system Stereo system BTSC/ A2 Analog TV Tuner quantity Digital TV system Digital TV Standard DVB-T Sound system Chapter 1 AT3705-DTV V370H1-L01 Super MVA 1920x1080 550 nits 800:1 16.7 M H:176 ; V:176 12 ms (Gray to Gray) 100V~240V-AC.
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Model On-line media Compliance Operating system Networking (WLAN) Networking (Fast Ethernet) Chapter 1 AT3705-MGW AT3705-DTV Live365 "UPnP compliant, INMPR compliant, DLNA" Linux 802.11b/g: 11/54Mbps 10/100Mbps...
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Abbreviations / symbols The main abbreviations used in this document are listed below with their meanings: CCIR International Radio consultative committee CVBS Composite Video Baseband Signal dB milliWatt dBµV dB microVolt Display Aspect Ratio Digital Video Digital Video Interface Electro Static Discharges Front panel keypad Integrated Circuit Intermediate Frequency...
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VESA Video Electronics Standard Association Video Graphics Array VHF/ UHF Very High Frequency / Ultra High Frequency S-Video signals : Luminance / Chrominance YprPb Video Components : Luminance / R-Y / B-Y Fast Blanking Slow Blanking Universal Serial Bus HDMI High-definition multimedia interface HDCP High bandwidth digital content protection...
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ELECTRO / OPTICAL 1) Size of screen 2) LCD Panel supplier 3) Screen aspect ratio 4) Type of screen 5) Screen resolution 6) Display colors 7) Chromaticity 8) Color temperature: 9) White uniformity 10) White dispersion 11) Brightness 12) Contrast 13) Uniformity 37 inches CMO, AUO...
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14) Overscan 15) Vision angle 16) Gamma 17) Response time (T ) ≤ 16ms (data is provided from CMO panel specification) 18) Screen (lamp + LCD) life 19) CCFL backlight 20) Panel interface video source is with overscan supported graphic source is without overscan supported ultra wide viewing angle: 176(H),176(V) (CR>20) the gamma value (global value ) must be between 2.2 and 2.6 measured from >...
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MAINS 1) Power Supply Electrical Specifications 2) Standby consumption 3) Power consumption 4) Mains disturbance behavior 5) Inverter The power supply for this product is an internal converter, with a non-replaceable fuse internally. This converter is designed to meet CE mark requirement.
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ACOUSTICAL / AUDIO 1) Audio power amplifier 2) Loudspeakers 3) Loudspeaker performances 4) Analog TV Audio modes 5) Audio Enhancement 6) Acoustical noise ( completeTV) audible noise in standby mode < 35dBA (ISO-7779) 2 x 12W rms on 8ohm load impedance. Attachable ,( 1 x full range + 1 x sub-woofer speakers ) x 2 Max.
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HARD / SOFT PERFORMANCES 1) Supported Languages Russian, Spanish, Swedish 2) Starting time 3) Wake-up behavior 4) Stand-by reason 5) Analog tuner performances Video output level Video S/N Noise limiting Video frequency characteristics Audio output level Audio S/N Frequency Range Note : data is provided from tuner specification 6) DVBT module management Czech, Danish, Dutch, English, French, German, Italian, Polish, Portuguese,...
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7) Scanning mode 8) Analog TV Naming function 9) PIP/POP/PBP function Automatic: Multistandard, frequency based Manual Frequency setting is available. Automatic : CNI recognition Manual 5 Characters PIP multiple size PIP multiple position POP source POP(main + sub) In PIP/POP/PBP mode, de-interlacer does not support to 1080i. PIP/PBP 1.
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Main SCART1 SCART2 SCART3 SCART4 Component 1 Component 2 MGW/Card HDMI (table of PIP & PBP)
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POP: 1. POP sub window only support Analog TV 2. No Auto SCART supported in POP mode 3. In POP12 Mode, support Component 1, 2 (up to 1080i) and MGW/Card Reader (up to 1080i), VGA/DVI (up to 1024x768@60Hz) and HDMI (up to 1080i) 4.
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10) TTX Level 11) TTX keys function 12) Video standard supported 13) Video ADC and processing 14) Time to synchronize 15) Video management 16) Aspect ratio 17) Scenario functions FLOF level 1.5. Source can be RF, DVBT or AV. TTX characters set must follow the country language selection. Full screen, Subtitle, Hold, Size, 4 Color keys (R, G, Y, B) PAL, SECAM (automatic detection) PAL (4.43 M, 50 Hz) B、G、D、K、H、I...
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18) Audio management 19) Audio enhancement 20) AV sub-format supported 21) Copy protection management 22) MGW module 23) Card reader function 24) IR performances 7.5M in front of the IR sensor User adjustments: Volume, Balance, Bass, Treble, MUTE, MONO/STEREO/Sound1/Sound2 Stereo, SRS WOW, BBE CVBS, YC, RGB, YUV HDCP (HDMI) Ref to Alpha MGW’s specification...
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INPUTS / OUTPUTS 1) RF 2) AV (SCART INPUT) 3) AV (SCART OUTPUT) 4) AV LEVEL Compatibility 75 ohms input , according to CE regulation. 2 RGB SCART Input signals: RGB CVBS, Left Right Those inputs can be use in RGB mode or CVBS mode. 2 S-video SCART Input signals: RGB CVBS, Left Right Those inputs can be use in CVBS mode or YC mode.
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5) AV (YC CVBS) 6) COMPONENTS Type : YUV/analog Polarity : Positive Level : Y : 1Vp-p ( with Sync.) Impedance : 75Ω± 5% Interface : RCA jack, Y : Green color U : Blue color V : Red color Type : TV CVBS output/analog output Level : 2Vp-p ( with Sync.)
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7) HDMI 8) DVI-D YCbCr LEFT RIGHT Format Resolution Type 480i 720 x 480 480p 720 x 480 576i 720 x 576 576p 720 x 576 720p 1280 x 720 1080i 1920 x 1080 HD one input Format Resolution 640 x 480 800 x 600 1024 x 768 480p...
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9) VGA Timing 720X400 (DOS) 640X480 (DOS) 640X480(VESA) 800X600(VESA) 1024X768(VESA) 1152 X864(VESA) 1280 X960(VESA) 1280 X1024(VESA) 1920 X 1080 (HD) one input Input signal VGA , Left Right Timing 640X350 640X400 720X400 640X480 800X600 V-Freq(Hz) 70 Hz 60 Hz 72 Hz 75 Hz 85 Hz 56 Hz...
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10) Sound management in GRAPHIC : in HDMI, the audio source is inside the HDMI signal 11) EDID management: 12) Card reader 1024X768 1152X864 1280X720 1280X768 1280X960 1280X1024 1366X768 1400X1050 1440X900 1920 X 1080 (HD) 640X350 720X400 640X480 832X624 1024X768 1152X870 In VGA and DVI-D, the audio comes from the audio graphic connector.
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13) Headphone 14) HIFI 15) Loudspeakers function is included in the MGW module The user can adjust separately the headphone volume. The load impedance is 32 ohms, with 0.5W max output. The audio signal can be any input source displayed in active window On the HIFI outputs, the user can connect an external audio amplifier, the selected signal is the same as the loudspeaker.
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CONNECTORS 1) Tuner type 2) AV Type 3) Card reader type 4) Color IEC 69-2 fem following: IEC 600169-2 SCART following: EN 50 049 –1 following: IEC 933-5 Jack 3.5 mm VGA connector fem following: VESA DVI-D connector HDMI type A following: EIA/CEA 861B Compact Flash Type I / II Smart Media...
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5) Accessibility Front : Side: Function Video connector CVBS input (RCA) Headphone output Compact flash or Card reader Rear : Function Video connector RF analog input RF digital input SCART1 RGB/CVBS SCART2 YC/CVBS SCART3 RBG/CVBS SCART4 YC/CVBS Component1 Component2 YC (1 x mini-DIN) HDMI DVI-D AV output...
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USER INTERFACE 1) Menu type 2) Remote control 3) Response time 4) Keypad (7 keys) 5) IR codes 6) LED indication 7) Pin code 8) Sleep Function 9) Remote control see UI specification for detail see UI spec typical 300ms ON/OFF , MENU , VOL+,...
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SERVICE 1) Software upgrade Mainboard software and DVB-T software update available by after sales service Services term shall follow Service Contract defined with customers...
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ACCESSORIES Following accessories would be contained to shipout with LCD TV. Cables Power Cord Lan cable is provided with MGW model only Remote Controller Remote controller AAA battery Others User Manual Warranty Card Quick guide MGW installation kit, provided with MGW model only...
MECHANISM SPECIFICATION Cosmetic and quality standards for injection molded plastic parts This specification defines the criteria to be used for inspection resulting in the acceptance or rejection of parts due to visual, cosmetic and functional requirements for customer visible surfaces. Surface quality Surface color, gloss, texture, blemishes, and all other irregularities in the plastic shall comply with QCI’s approval sheet.
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Physical Specifications Overall Dimensions: Height : 725 mm Width : 1185 mm Depth : 285 mm Base Tilt: 0° Swivel: 0° Mass Mass of display with cable approx.: 42 Kg VESA Mounting Holes According to Vesa FPMPMI standard. 4 holes 300 mm x 100 mm (4mm, 0.7 pitch threaded) in the rear center for ARM. Logo and Rating Label It’s customized Packing Specifications...
ENVIRONMENTAL REQUIREMENTS The TV shall meet the following environmental requirements under normal operating conditions. Operating 25° ± 5° for Purity, White Point, Mis-convergence, Luminance measurements and White uniformity measurement Operating temperature Operating humidity Storage and Shipping Storage temperature Shipping temperature Storage humidity Shipping humidity Altitude...
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REGULATORY REQUIREMENTS Product Safety This display unit complies with following safety standards. TUV compliance: EN60950 safety specification-business equipment Emissions/Susceptibility This display unit complies with the following EMC regulations. CE Mark compliance: EN60950 EN 55022 ( CISPR 22, Class B ) IEC 1000-4-2 ESD: EN55024-2 or EN61000-2 IEC 1000-4-3 RS ( Radiated ): EN55024-3 or EN61000-3 IEC 1000-4-4 EFT: EN55024-4 or EN61000-4...
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RELIABILITY PERFORMANCE Electrostatic Discharge Requirements This display shall withstand 8kV for contact discharge and 15kV for air discharge of Electrostatic Discharge to meet the acceptance criteria as specified in IEC 1000-4-2. Mean time between failure (MTBF) For the purposes of demonstrating the MTBF of this product, a failure is defined as the inability of the product to function in accordance with this specification.
Machine Disassembly and Replacement This chapter contains step-by-step procedures on how to disassemble the LCD TV for maintenance and troubleshooting. To disassemble the TV, you need the following tools: Wrist grounding strap and conductive mat for preventing electrostatic discharge Small Philips screw driver Philips screwdriver Plastic flat head screw driver Tweezers...
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.
Disassembly Procedure Removing the Speaker Press the latch to release speaker cable. Remove the four screw securing the right speaker. Remove the right speaker. Repeat the same steps for left speaker. Remove the four screws securing the right speaker bracket and remove it from speaker. Repeat the same steps for left speaker.
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Removing the TV Stand Module Remove the four screws securing the TV stand module. Remove the TV stand module. Remving the I/O Remove the six screws securing the I/O cover. Remove the I/O cover. Remove the 20 screws securing the I/O bracket. Remove the I/O bracket.
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Remove the four nuts securing the down cover. Push the down cover a little bit backward. Remove the down cover as shown. Remove the 20 screws securing the back cover. Lift the back cover up. Disconnect the left speaker connector from back cover. Chapter 3...
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Remove the two screws securing the left speaker board. DIsconnect the right speaker connector from the back cover. 10. Remove the two screws securing the right speaker board. 11. Remove the back cover as shown. Removing the Top Shielding Remove the screws securing the top shielding. Push the top shielding a little bit upward.
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Remove the top shielding. Removing the DMA board Disconnect the following connectors and antennas. DMA-M/B Remove the six screws securing the DMA board and remove it. Removing the Power Board Disconnect the connectors from power board. power board- Dtuner, I/O board, power board -aueio board power board-...
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Remove the 9 screws securing the power board and remove the power board. Removing the Converter Board Disconnect the connectors from converter board. Remove the four screws securing the converter board. Remove the converter board. Removing the Audio Board Disconnect the cables from audio board. power board-audio board audio board-speaker board...
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Remove the audio board. Removing the I/O board and A-tuner Board Disconnect the connectors from I/O board. power board -I/O board Remove the four screws securing the I/O board and four screws securing the A-tuner board. Remove the I/O board and A-tuner board. Separate the I/O board and A-tuner board.
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Removing the Heatsink Remove the four screws securing the heatsink. Remove the heatsink from the main unit. Removing the Ethernet Board Remove the two screws securing the ethernet board. Remove the ethernet board. Disconnect the cable from the ethernet board. Chapter 3...
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Remove the two screws securing the ethernet bracket and remove the bracket. Removing the D-tuner Remove the three screws securing the D-tuner. Remove the D-tuner. Removing the M/B and D-tuner Board Disconnect the cables from Mainboard and D-tuner board. M/B-inverter board M/B-power button board...
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Remove the four nuts and two screws securing the mainbaord. Remove the two screw, three short nuts, and four long nuts securing the D-tuner board. Remove the M/B and D-tuner board. Separate the M/B and D-tuner board. Removing the Card Reader module Remove three screws securing the card reader module.
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Remove two screws securing the ground wire. Turn the card reader module over and disconnect the cables from card reader module. Disconnect the cables from AV3 board. I/O-AV3 Remove the two screw securing the AV3 board and remove it from card reader module. Chapter 3 audio-AV3...
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Removing the Bezel Skirt Remove the 6 screws securing the bezel skirt. Remove the bezel skirt. Removing the IR Board, Power Button Board, and Keypad Board Remove the two screws securing the keypad board and remove it. Chapter 3...
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Remove the two screws securing the IR board, and remove the two screws securing the power button board. Removing the PCB Chassis Disconnect the cables from LVDS board. Remove the 7 screws on chassis bottom view. Remove the 10 screws on chassis top view. Chapter 3...
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Remove the PCD chassis as shown. Removing the Antenna Open the clip to release the antenna. Remove the antenna. Removing the LCD Panel Remove the two screws on the right. Chapter 3...
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Remove the two screws on the left. Remove the LCD panel. Remove the two screws securing the right side bracket. Remove the four screws securing the down bracket. down bracket Remove the right side bracket. side bracket Chapter 3...
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Remove the down bracket. Repeat the same steps for left side and top bracket. Chapter 3...
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.
FRU List Image ACCESSORY REMOTE CONTROL - EU DVBT+MGW REMOTE CONTROL - USA DVBT+MGW LF REMOTE CONTROL - TAIWAN DVBT+MGW LF REMOTE CONTROL - AUSTRALIA DVBT+MGW LF REMOTE CONTROL - EU DTV LF REMOTE CONTROL - USA DTV LF REMOTE CONTROL - TAIWAN DTV LF REMOTE CONTROL - AUSTRALIA DTV BOARD AUDIO BOARD...
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Image D-TUNER BOARD - DVB-T MAINBOARD DTV + MGW - PAL AUS MAINBOARD DTV- PAL AUS CABLE POWER CORD SP-023+IS-14H05VV- F3P 1.8M EU CABLE - IO BOARD TO AUDIO 11P/13P CABLE - POWER BD TO AUDIO 8P/7P CABLE - AV3/EARPHONE TO AUDIO 4P/4P CABLE - GROUND 1P/1P CABLE - INV(CMO37) TO MB/PWR R2A...
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Image CABLE - SPEAKER-L 3P/3P CABLE - SPEAKER-R 3P/2P CABLE - IO BOARD TO AV3/ EARPHONE 6P/6P CABLE - MB TO DMA 24P/24P CABLE - MB TO KEYPAD/IR/PWKEY CABLE - LCD (CMO37) TO CONVERTER CABLE - LVDS(CMO37) TO MB Chapter 6 PARTNAME DESCRIPTION CABLE ASSY VWE7...
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Image CABLE - CARD-READER 7P/7P CABLE - USB 5P/5P R3A EP CABLE - DMA TO ETHERNET RJ45 5P/ CABLE - SCART-SCART VA1 20P/20P CABLE - TC1 LAN 2M (RJ45/8P) CASE/COVER/BRACKET ASSEMBLY BACK COVER ASSY PCB CHASSIS LCD PANEL BRACKET TOP LCD PANEL BRACKET SIDE PARTNAME DESCRIPTION...
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Image LCD PANEL BRACKET DOWN "FRONT BEZEL W/O POWER/FUN. KEY , DOOR" FUNCTION/POWER KEY DOOR VWE7 POWER-KEY ASSY "FUNCTION KEY VWE7(EBVWE003,REV3B)" DOWN COVER IO BRACKET IO COVER TOP SHIELDING BEZEL SKIRT Chapter 6 PARTNAME DESCRIPTION "PANEL BKT DOWN VWE7(FBVWE001,REV3B)" VWE7 BEZEL-SUB ASSY VWE7 AV3 DOOR ASSY VWE7 POWER-KEY ASSY "FUNCTION KEY...
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Image STAND BASE ASSY ETHERNET BOARD BRACKET SPEAKER BRACKET SPEAKER CAP AUDIO BOARD HEAT SINK I/O SHIELDING W/THERMAL PAD "AV3 BKT VWE7(FBVWE005,REV3B)" "AV3 SHD-A VWE7(FBVWE006,REV3A)" "LCD(TFT)V370H1-L03 V01(37"",1920*1080) LF" SPEAKER PARTNAME DESCRIPTION VWE7 STAND ASSY "RJ11 BKT VWE7(FBVWE008,REV3A)" "SPEAKER BKT VWE7(FAVWE004,REV3C)" "SPEAKER CAP VWE7(EBVWE014,REV3A)"...