Acer AT4230B, Service Manual

Page 1: ...Acer AT4230B LCD TV Service Guide PRINTED IN CHINA Service guide files and updates are available on the ACER CSD web For more information please refer to http csd acer com tw ...

Page 2: ...Revision History Please refer to the table below for the updates of LCD TV AT4230B service guide Date Chapter Updates 2007 7 20 Chapter 1 4 1st edition II ...

Page 3: ...cation may be reproduced transmitted transcribed stored in a retrieval system or translated into any language or computer language in any form or by any means electronic mechanical magnetic optical chemical manual or otherwise without the prior written permission of Acer Incorporated III ...

Page 4: ...cer Incorporated software described in this manual is sold or licensed as is Should the programs prove defective following their purchase the buyer and not Acer Incorporated its distributor or its dealer assumes the entire cost of all necessary servicing repair and any incidental or consequential damages resulting from any defect in the software Acer is a registered trademark of Acer Incorporated ...

Page 5: ...its and pieces of additional information related to the current topic WARNING Alerts you to any damage that might result from doing or not doing specific actions CAUTION Gives precautionary measures to avoid possible hardware or software problems IMPORTANT Reminds you to do specific actions relevant to the accomplishment of procedures V ...

Page 6: ... NOT be covered in this generic service guide In such cases please contact your regional offices or the responsible personnel channel to provide you with further technical details 2 Please note WHEN ORDERING FRU PARTS you should check the most up to date information available on your regional web or channel For whatever reason if a part number change is made it will not be noted in the printed Ser...

Page 7: ...n D Sub for VGA 19 pin HDMI connector DIN45325 IEC169 2 Terminal for TV CATV input DIN45325 IEC169 2 Terminal for DVB T input 3 5 mm Earphone jack for Audio Line input Video Functions Support PAL NTSC SECAM video format Support 480i 576i 480p 576p 1080i and 720p format Build in Teletext functions Build in Dynamic adaptive smoothing filter Build in Dynamic temporal frame filtering Noise Reduction B...

Page 8: ... 63 Hz Power consumption 291 Watts Stand by 5 Watts Max Remote controllers Multi function remote controller Speaker Internal speaker 10 W x 2 Amplifier 8 W x 2 stereo volume adjustable Others On screen display adjustment function ISP In System Programming function available for revising driver easily ...

Page 9: ...System Block Wiring Diagram Chapter1 3 ...

Page 10: ...LCD Main Board Block Diagram 4 Capter1 ...

Page 11: ...on R C for Australia Key Functions Remark for cardreader Power Power On Off Display Display Channel and Input Source Mute Mute On Off TV Analogue TV Digital TV Component Component1 Component2 AV AV1 AV2 AV3 HDMI1 HDMI2 PC VGA Sleep Sleep Timeer Off 15 30 45 60 90 120 ...

Page 12: ... down in the OSD ATV previous page or sub page in teletext mode down DTV previous page in teletext mode Navigate left in the OSD left DTV previous sub page in teletext mode Navigate right in the OSD right DTV next sub page in teletext mode OK Selection Confirm 1 Number key 1 2 Number key 2 3 Number key 3 4 Number key 4 5 Number key 5 6 Number key 6 7 Number key 7 8 Number key 8 9 Number key 9 0 Nu...

Page 13: ... holds the current teletext page Hold 2 When in the TV Mode pressing Hold key do freeze function on active video When in teletext pages this key Zoom page toggle 1X 2X and page selection by Up arrow and Down arrow HDMI1 HDMI2 Size Select Scan mode Auto Underscan Overscan Subtitle Show subtitle on the screen R Colour button to operate the teletext G Colour button to operate the teletext Y Colour bu...

Page 14: ...olor system PAL SECOM Sound system Sound 1 and Sound 2 Stereo system NICAM and FM Stereo A2 Analog TV tuner Quantity 1 Terminal RF 75Ω DIN45325 IEC169 2 Type RF DVB T 75Ω DIN45325 IEC169 2 Type AV 1 RCA Jack for CVBS S Video and Audio AV 2 RCA Jack for CVBS S Video and Audio AV 3 RCA for YPbPr or CVBS and Audio R L Component 1 RCA Jack for YUV and Audio Component 2 RCA Jack for YUV and Audio PC An...

Page 15: ...6 875 75 VESA 10 800 600 53 7 85 VESA 11 1024 768 48 363 60 VESA 12 1024 768 56 476 70 VESA 13 1024 768 60 023 75 VESA 14 1024 768 68 7 85 VESA 15 832 624 49 7 75 MAC 16 1024 768 60 2 75 MAC Preset Mode for HDMI Input 16 factory pre set modes for DVI inputs are saved during the manufacturing process Preset mode Pixel Format Hor Freq kHz Hor Polarity Vert Freq Hz Vertical Polarity Standard 1 640 48...

Page 16: ...eo Power Indication Recovery time Power On On On Active 291W Green Stand by Off On Off 5W Red 5s Suspend On Off Off 5W Red 5s Off state Off Off Off 5W Red 5s Power off 5W Dark Turn on 5s Sync on means normal operation Sync off means Hsync f 1 KHz duty cycle 25 Vsync f 10 Hz duty cycle 25 The power consumption is valid over the specified voltage and frequency range Power comsuption is measured from...

Page 17: ...the line voltage throughout the applicable operating range shall not result in any visible image anomalies such as image movement changes in light output nor changes in image stability or quality Line Fuse The AC input shall be fused and become electrically open as a result of an unsafe current condition This fuse is inside the power supply converter and is not user replaceable and must be returne...

Page 18: ...ll be easily visible from the front of the display Inverter The inverter which is used to light up back light of LCD panel shall be well designed to meet requirement of panel s specification Overall Dimensions Height 794 mm Width 1071 mm Depth 311 mm 12 Capter1 ...

Page 19: ...erature 20 C to 60 C Shipping temperature 20 C to 60 C Storage humidity 10 to 90 non condensing Shipping humidity 10 to 90 non condensing Altitude Units tested at an altitude up to 12 000 feet must operate at normal conditions without exhibiting abnormal behavior such as arcing or shutdown Operating altitude 0 to 12 000 feet Shipping altitude 0 to 40 000 feet Storage altitude 0 to 40 000 feet Vibr...

Page 20: ...d to meet the requirements of specification Drop Test The packaged display shall be capable of passing drop test as specified in following specification without any measurable degradation in performance or detectable mechanical or cosmetic damage Filter 330 Hz Dropping way 1 corner 3 edges 6 flats Dropping Height follow the below table Weight kg Corner edge F R Btm cm L R Up side cm 0 9 76 76 9 17...

Page 21: ...l component EDID memory must be protected against writing or other corruption through customer accessible electrical connection and required communication channels Password protection use of an unpublished enable register or use of direct electrical connection is acceptable levels of protection provided that the power on Default State is that disabling writing The serial number fields in the EDID ...

Page 22: ...C 22 78 2A 3B 90 A7 54 46 98 24 2 10 49 4B 20 00 00 01 01 01 01 01 01 01 01 01 01 3 01 01 01 01 01 01 01 1D 80 18 71 1C 16 20 58 2C 4 25 00 C4 8E 21 00 00 9E 00 00 00 FD 00 32 55 1E 5 50 0B 00 0A 20 20 20 20 20 20 00 00 00 FF 00 31 6 32 33 34 0A 20 20 20 20 20 20 20 20 00 00 00 FC 7 00 41 63 65 72 20 41 54 32 37 30 34 0A 20 01 41 16 Capter1 ...

Page 23: ... module during operation or just after powered off you must take proper precautions against electric shock and must not touch the drive circuit portion and metallic part of module within 10 minutes The capacitors in the drive circuit portion remain temporarily charged even after the unit is powered off If the residual voltage is strong enough it could result in electric shock Thus we strongly sugg...

Page 24: ... take off stand cover 4 Remove 10pcs screws from rear cover and take off it 5 Remove 6pcs screws from stand bracket 6 Remove 2pcs IO NUT from VGA joint and 7pcs screws from IO B joint 7 Remove 2pcs screws from HDMI joint and tear off the tapes 8 Remove 6pcs screws from shielding and take off the conductive fabric 18 Capter2 ...

Page 25: ...s from right speaker 12 Remove 3pcs screws from TUNER B and 2pcs screws from CPU B 13 Remove 3pcs IO NUT from IO B 14 Remove 2pcs IO NUT from CPU B 15 Remove 2pcs screws from IR B 9 Remove 8pcs screws from shielidng and take off 2pcs cable fasten 2 3 Chapter2 19 ...

Page 26: ...emove 7pcs screws from M B and P B then take off them 19 Remove 4pcs GND screws from P B M B IR B and BTN then take off it 20 Remove 6pcs screws from panel bracket 21 Remove 5pcs screws from panel 22 Remove 6pcs screws from panel then separate panel and bezel 23 Remove 4pcs screws from EMI GASKET DOWN 2 1 2 2 2 3 20 Capter2 ...

Page 27: ...24 Remove 4pcs screws from EMI GASKET UP then take off them Chapter2 21 ...

Page 28: ...tom Verify the symptoms by attempting to re create the failure by running the diagnostic test or by repeating the same operation 3 Disassemble and assemble the unit without any power sources 4 If any problem occurs you can perform visual inspection before you follow this chapter s instructions You can check the following ٛ Power cords are properly connected and secured ٛ There are no obvious short...

Page 29: ...es Power On A No LCD No Back Light B Remote no function C Button Key no function RF no Display Component 1 2 no Display D E F AV1 AV2 no Display Speaker no Sound G H Next Page Problem List 1 Chapter3 23 ...

Page 30: ...Front Page VGA no Display I HDMI no Display HDMI no Sound J K L AV1 S V no Sound M N VGA DVI no sound Component no Sound Problem List 2 24 Capter3 ...

Page 31: ... Bright Check R C and keypad LED Bright Green Color LCD panel can display END Check panel s all cable Replace cable Check M B Replace M B Replace panel Replace R C or IR B or keypad B Replace P B or M B or IO B or all cable Replace M B Can not power ON Chapter3 25 ...

Page 32: ... B I V power cable had plug in Change I V power cable LCD panel backlight bright Replace P B LCD panel backlight bright Replace LCD panel I V LCD panel backlight bright Replace M B END LCD No Back Light 26 Capter3 ...

Page 33: ...ntrol Have battery IR B cable plug in Press remote manual key OSD can display Change battery Check IR B or Replace IR B cable Replace IR B Press remote manual key OSD can display Replace M B END Remote no function Chapter3 27 ...

Page 34: ...D Key board cable Plug in Press Menu key check have function Press Menu key check have function END END Check K B cable or replace K B cable Replace K B cable Replace K B cable Button Key no function 28 Capter3 ...

Page 35: ...no no E RF cable plug in Replace I O B RF can Display END Replace M B Check RF cable or Replace RF cable RF no Display Chapter3 29 ...

Page 36: ...no no F Component cable plug in Replace IO B Check component cable or Replace component cable Component can display END Replace M B Component 1 2 no Display 30 Capter3 ...

Page 37: ...no no G CVBS cable plug in Replace IO B CVBS can Display END Check CVBS cable or replace CVBS cable Replace m B AV1 AV2 no Display Chapter3 31 ...

Page 38: ...ideo cable Check speaker cable or Replace speaker cable Replace IO B or speaker END Replace M B Audio R L source had plug in Video can display Speaker have Sound out put Speaker have sound output Speaker R L cable plug in Mute turn off Volume set 50 Speaker no Sound 32 Capter3 ...

Page 39: ...no no no I VGA cable plug in Read EDID data EDID data normal VGA can display END Check VGA cable or replace VGA cable Replace M B Write EDID data VGA no Display Chapter3 33 ...

Page 40: ...no no no J Plug in HDMI cable Read EDID data EDID data normal HDMI can display END Check HDMI cable or replace HDMI cable Replace M B Write EDID data HDMI no Display 34 Capter3 ...

Page 41: ...no no no K Sound output Replace M B HDMI cable plug in EDID data normal Check HDMI cable or replace HDMI cable Write EDID data Read EDID data END HDMI no Sound Chapter3 35 ...

Page 42: ... can display Sound normal Audio line in Cable plug in Mute turn off Volume set to 50 END Check video cable or PC or replace VGA cable Replace M B Check line in cable or Replace line in cable VGA no sound 36 Capter3 ...

Page 43: ...lume 30 Earphone remove Component Sound normal Component Source can display Check component cable or Replace component cable Replace IO B Check component cable or Replace component cable Component Sound normal END Replace M B Component no Sound Chapter3 37 ...

Page 44: ...arphone remove AV1 S video source Can display AV1 S video source Can display Replace IO B Check video and R L cable Or replace video or R L cable Check video and R L cable Or replace video or R L cable AV1 S video Sound normal END Replace M B AV1 S V no Sound 38 Capter3 ...

Page 45: ...ver 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 t...

Page 46: ... FAA 51 VV3 EBVV3004 REV3A GP EBVV3004011 PWR CORD PWR CORD SP 502B IS 14 3P 1 8M AUST B GP DM333181T91 27 M12V7 001 Case Cover Bracket Assembly LCD BEZEL ASSY HV4 LCD BEZEL ASSY GP 36HV4LBTN04 60 M34V7 001 BACK COVER AH4T BACK COVER ASSY GP 47AH4BC0I06 60 M34V7 002 STAND ASSY HV4 STAND ASSY GP 27HV4SATN07 60 M34V7 003 STAND BASE STAND BASE HV4 EAHV4002 REV3A GP EAHV4002014 STAND BRACE STAND BRACE...

Page 47: ... 47 M34V7 006 EMI GASKET POWER HX4 EMI GASKET POWER HX4 GBHX4005 3A GP GBHX4005010 47 M34V7 007 GASKET 385X15X14 HV4E GASKET 385X15X14 HV4E GBHV4004 3A GP GBHV4004018 SCREW SCREW SCREW M4 0 6 0 B NI GP MM40060BBJ5 86 M08V7 005 SCREW SCREW T4 12 B BNI GP ME40120BJ24 86 M25V7 003 SCREW SCREW M3 6 B BNI GP MM30060BJ25 86 M08V7 003 SCREW SCREW T3 12 P BNI WASHER GP MS30120PCT3 86 M3507 004 SCREW SCREW...

Page 48: ...2 15 STANDOFF STANDOFF M3L29 4 AH2 86 M3507 002 2 16 STANDOFF STANDOFF M3L37 5 AH2 86 M3507 003 1 17 CLAMP CLAMP AUO R L HX4 FBHX4002 REV3A GP 47 M34V7 001 4 18 CLAMP CLAMP AUO D HX4 FBHX4003 REV3A GP 47 M34V7 002 1 19 GASKET GASKET 385X15X14 HV4E GBHV4004 3A GP 2 20 GASKET EMI GASKET LVDS HX4 GBHX4002 3A GP 47 M34V7 004 1 21 GASKET EMI GASKET UP HX4 GBHX4003 3A GP 47 M34V7 005 3 22 GASKET EMI GAS...

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