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Acer AT1921/22 Service Guide Service guide files and updates are available on the CSD web: for more information, Please refer to http://csd.acer.com.tw/ 100% Recycled Paper - 1 -...
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Conventions The following conventions are used in this manual: Screen messages Denotes actual messages that appear on screen Note Gives bits 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.
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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.
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WARNING: (FOR FCC CERTIFIED MODELS) NOTE: this equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
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PRECAUTIONS Do not use the monitor near water, e.g. near a bathtub, washbowl, kitchen sink, laundry tub, Swimming pool or in a wet basement. Do not place the monitor on an unstable trolley, stand, or table. If the monitor falls, it can injure a person and cause serious damage to the appliance.
SPECIAL NOTES ON LCD MONITORS The following symptoms are normal with LCD monitor and do not indicate a problem. NOTES Due to the nature of the fluorescent light, the screen may flicker during initial use. Turn off the Power Switch and then turn it on again to make sure the flicker disappears. You may find slightly uneven brightness in the screen depending on the desktop pattern you use.
Chapter 1 LCD TV Feature Destination Europe Color System CCIR B/G, D/K, I and L/L’ Sound System Sound 1 and Sound 2 Stereo System NICAM and FM Stereo ( A2 ) Channel System Full frequency range from channel E2 ( 48.25 MHz ) to channel E69 ( 855.25 MHz) Sub-Title Teletext 100 pages...
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TV System PAL and SECAM system Receivable Tuner FQ1216-MK5 Horizontal input frequency range : 30~71 Vertical input frequency range : 50~85 Hz Maximum resolution : 1440*900 When input signal is out of range or down scaling support ,the OSD will show "Out of Range "within 5 seconds and LED Out of Range is green...
THD(Total Harmonic D distortion) Limited to 5 % at 2W (at 0.1~15 KHz) OSD Capability On screen display adjustment function ISP (In System Programming) function ISP Functions available for revising driver easily. Input Voltage 90 ~ 264 V , 47 ~ 63 Hz Input Current 0.6~1.5 A 58 Watts(not support Energy Star max...
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Impedance More than 22kΩ Interface 3.5mm Stereo Jack , Black color Type Stereo R/L Channels Level 40mW rms/per Channel(typ.) for 32 ohm earphone Impedance 32 ohm Headphone Output Interface 3.5mm Stereo Jack Max. Audio output 5W + 5W (at 1.0Vp-p / 1kHZ input,10% THD max.) Sound Distortion 1% THD max.
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PC Timing Mode Pixel Hor. Freq. Hor. Vert. Vertical Freq. Standard Format Format (kHz) Polarity (Hz) Polarity 640*350 31.5 720*400 31.47 640*480 31.47 640*480 66.7 640*480 37.861 VESA 640*480 37.5 VESA 640*480 43.3 VESA 800*600 35.156 VESA 800*600 37.879 VESA 800*600 48.077 VESA...
Chapter 2 OPERATING INSTRUCTIONS Front Panel Definition This Section defines the front panel User Interface for Led Indictor and Key function. BUTTON OSD On OSD Off 1 Power Software On / Off Menu / Press this button to open the OSD or Enter Exit function CH Up...
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Number key 2 Number key 3 Number key 4 Number key 5 Number key 6 Number key 7 Number key 8 Number key 9 Number key 0 Recall Reture to previous channel Enter Enter to confirm channel selection by number key 1.Navigate up in the OSD menu 2.channel up when OSD menu is not showed on screen Down...
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SIZE When in teletext pages, this key zoom page toggle 1X/2X and page selection by Up-arrow and Down-arrow SUBPAGE Subpage directly HOLD when in teletext pages, press this button temporarily holds the current teletext page Red color button to do teletext operation In teletext mode, Green color button to teletext operation In teletext mode Yellow color button to teletext operation In teletext mode 42 B...
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Sound Effect [Off] Steady Sound [Off] Country France Germany Italy Spain Switzerland Denmark Belgium Netherlands Luxembourg Czech Republic Portugal United Arab Emirates Saudi Arabia Skip [Off] Reorder Name Frequency Auto Scan Scan up Scan down Manual Scan Scan for update Lock This Please enter your PIN Lock/[Unlock]...
Dansk Dutch Sleep [Off]/15/30/45/60/90/120 Please enter your PIN New PIN: Type it again to Set PIN [- - - -] confirm: Full [16:9] Panorama Letterbox1 Wide Mode Letterbox2 HDMI Scan Info. [Auto] / Overscan / Underscan Factory Default Teletext Operation TELETEXT/MIX TV/Teletext Mode By pressing Teletext (go to index page),screen will change from TV/AV mode to...
Chapter 3 Machine assembly This chapter contains step-by-step procedures on how to assemble the monitor for maintenance and trouble shooting NOTE: 1. The screws for the different components vary in size. During the disassembly process, group the screws with the corresponding to avoid mismatch when putting back the components. 2.
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Assembly process CHECKING THE FOAM AND PUT IT TO THE PRODUCTION LINE. CHECKING THE SHIELDING AND STICK 2*PCS FOAM. PUT THE FLOW CARD TO THE BOARD. SCAN THE FLOW CARD AND CODE OF P/B INTO THE TMS SYSTEM. INSERT THE JUMP CABLE INTO THE P/B AS LEFT SHOW.
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LOCK UP 4*PCS SCREWS(F3.0*6.0- T) TO THE LOCATION OF M/B AND P/B AS LEFT SHOW. LOCK UP 1*PCS SCREW(F4.0*8.0-T) TO THE P/B. LOCK UP 1*PCS SCREW(M3.0*5.0-I) TO THE P/B. LOCK UP 2*PCS SCREWS(F3.0*6.0- T) TO THE P/B AS LEFT SHOW. LOCK UP 1*PCS SCREW(M3.0*5.0) TO THE SHIELDING .
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TEAR OFF THE PROTECT FILM OF PANEL AND CHECKING IF BAD. STICK GOOEY TAPE FOR FIXING PROTECT FILM. TURN OVER LCD AND TEAR OFF EP BAG. STICK 1*PCS CODE TO PANEL AS LEFT SHOW. SCAN THE FLOW CARD, PANEL CODE AND P/N TO TMS SYSTEM.
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STICK 1*PCS CABLE FASTNER TO THE DOWNSIDE OF RIGHT BRACKET AS LEFT SHOW. PUT THE RIGHT BRACKET TO THE PAENL. LOCK UP 2*PCS SCREWS TO RIGHT BRACKET FOR FIXING. SCAN FLOW CARD AND M/B CODE TO THE TMS SYSTEM. INSERT THE LVDS CABLE TO THE JOINT OF PANEL.
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CONNECT THE SHIELDING AND BRACKET AS LEFT SHOW. LOCK UP 4*PCS SCREWS(F3*6) FOR FIXING SHIELDING. TRUN OVER LCD. CHECKING THE BEZEL IF BAD AND PUT IT TO THE PANEL. TRUN OVER THE LCD.
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LOCK UP 3*PCS SCREWS FOR FIXING RIGHTSIDE BEZEL AND BRACKET. LOCK UP 3*PCS SCREWS FOR FIXING LEFTSIDE BEZEL AND BRACKET. INSERT THE 4PCS LAMP CABLE TO PUT THE SPEAKER TO THE BEZEL AS LEFT SHOW. LOCK UP 4*PCS SCREWS FOR FIXING LEFT SPEAKER.
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LOCK UP 4*PCS SCREWS FOR FIXING RIGHT SPEAKER. GET THE B/B AND CONNECT THE B/B AND BEZEL WITH B/B CABLE. GET THE IR/B AND INSERT THE IR/B CABLE TO THE JOINT OF M/B. PUT THE IR/B TO THE LOCATION OF BEZEL.
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LOCK UP 2*PCS IO NUTS FOR FIXING SHIELDING. INSERT 1*PCS CABLE FASTNER TO SHIELDING. SETTLE THE CABLE FOR B/B, SPEAKER, IR AND INSERT THEM INTO THE JOINT AS LEFT SHOW. STICK 1*PCS ACETIC TAPE FOR FIXING B/B AS LEFT SHOW.
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STICK 1*PCS AL FOIL TO AL1 WHICH IS BETWEEN THE PAENL AND SHIELDING. LOCK UP 2*PCS SCREWS TO FIXING FASTENER BETWEEN PAENL AND BEZEL. CHECKING THE CABLE IF WRONG WAY. CHECKING THE SCERWS IF LOOSE. CHECKING THE AL FOIL IF WRONG WAY.
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LOCK UP 2*PCS SCREWS FOR FIXING REAR COVER STICK 1*PCS FLOW CARD TO GOOEY OF REAR COVER. COVER IT WITH BAG. LOCK UP 5*PCS SCREWS FOR FIXING REAR COVER AND BEZEL. INSERT THE VGA CABLE INTO THE JOINT OF VGA. CONNECT THE POWER CORD AND LCD TV.
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STICK FLOW CARD TO BASE. CHECKING THE BEZEL WHETHER BAD. CHECKING THE REAR COVER WHETHER BAD. CHECKING FUNCTION/B WHETHER BAD.
Chapter 4 TROUBLE SHOOTING This chapter provides trouble shooting information for AT1921/22 NO POWER Check P/B CN101 pin7 12V, Separate M/B & P/B Check CN101 Change P/B pin15V Correct? pin7 12V, pin15V Correct? Check M/B L56 3.3V L58 1.8V Change M/B...
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No Characters , Missing Color Check M/B CN3 Change Pin28~30 5V correct? Change Check LVDS cable LVDS cable Check LCD panel VGA always show No Signal Check VGA cable Change correct? VGA cable Check input P2 Change Pin13 H-sync ,pin14 V-sync correct? Check PC...
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Video-mode always show No Signal Check Video cable Change correct? Video cable Change I/O board...
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Chapter 5 Connector Information Length: 1.8meters +15mm/-0mm Cable Color: Black color Power Cord Quantity: Length: 1.8meters +15mm/-0mm Cable Color: Black color AV (Video& Audio) Cable Quantity: Length: 1.8meters +15mm/-0mm Cable Color: Black color SCART Cable Quantity: Length: 2.5meters +15mm/-0mm Cable Color: Transparent color TV Antenna Cable Quantity:...
Acer office to order FRU parts 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 best to dispose it, or follow the rules set by your regional Acer office on how to return it.
Chapter 7 SCHEMATIC DIAGRAM AT1920 M/B CONTENTS SCHEMATIC SHEET CONTENT INDEX & POWER CONNECTOR MT8201 LQFP256 E-PAD DDR & FLASH HDMI INPUT-MT8293 VGA IN & PC AUDIO IN TUNER INPUT / GPIO AV/SV/AUDIO SCART FULL FUNCTION MT8291 AUDIO ADC LVDS OUT AUDIO AMP Keypad IR...
TOUCH SWITCH 4P MENU TOUCH SWITCH 4P AUTO TOUCH SWITCH 4P POWER JST 8Pin PH2.0mm H TOUCH SWITCH 4P Down TOUCH SWITCH 4P TOUCH SWITCH 4P RIGHT TOUCH SWITCH 4P LEFT PROJECT : AT1922 Title 01. Contents Size Document Number R e v S9Q-WN B/B Key Board...
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4501-04-05P-R green LED1 orange EL-209-2EGW MTH276D126 MTH276D126 SEN1 PROJECT : AT1922 Title Size Document Number R e v IR-BOARD Date: Tuesday, May 29, 2007 Sheet...