Acer AL1722 Service Manual
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Acer AL1722 Service Manual

Acer AL1722 Service Manual

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Acer AL1722
Service Guide

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  • Page 1 All manuals and user guides at all-guides.com Acer AL1722 Service Guide...
  • Page 2 All manuals and user guides at all-guides.com Service Guide Version and Revision Version Release Date Revision Jan.12, 2005 Original release...
  • Page 3 Printed in Taiwan. Disclaimer The information in this guide is subject to change without notice. Acer Incorporated makes no representations or warranties, either expressed or implied, with respect to the contents hereof and specifically disclaims any warranties of merchantability or fitness for any particular purpose.
  • Page 4 ACER-AUTHORIZED SERVICE PROVIDERS, your Acer office may have a 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.
  • Page 5 All manuals and user guides at all-guides.com 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.
  • Page 6 All manuals and user guides at all-guides.com 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.
  • Page 7 All manuals and user guides at all-guides.com 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.

  • Page 8: Table Of Contents

    All manuals and user guides at all-guides.com Table Of Contents Chapter 1 Monitor Features ……………………………………… Induction ……………………………………… Electrical Requirements ……………………………………… LCD Monitor General Specification ……………………………………… LCD Panel Specification ……………………………………… Support Timing ……………………………………… Block Diagram ……………………………………… Main Board Diagram ……………………………………… Software Flow chart ………………………………………...

  • Page 9: Induction

    This will alleviate the growing health concerns. It is also a space saving design, allowing more desktop space, and comparing to the traditional CRT monitor, it consumes less power and gets less weight in addition MTBF target is 50k hours or more. Chart of AL1722 17" Samsung Panel LTM170EU-21...

  • Page 10: Electrical Requirements

    All manuals and user guides at all-guides.com Electrical Requirements Standard Test Conditions All tests shall be performed under the following conditions, unless otherwise specified. 225 lux Ambient light 40 cm in front of LCD panel Viewing distance Warm up time All specifications 30 minutes Fully functional...

  • Page 11: Lcd Monitor General Specification

    All manuals and user guides at all-guides.com LCD Monitor General Specification 17 “ active matrix color TFT LCD Panel type SAMSUNG LTM170EU-21 Display size 337.92mm (H) × 270.336mm(V) Display mode VGA 640 × 480 (60/75 Hz) SVGA 800 × 600 (60/75 Hz) XGA 1024 ×...

  • Page 12: Lcd Panel Specification

    All manuals and user guides at all-guides.com LCD Panel Specification LCD Panel Model (SAMSUNG LTM170EU-21) Display Type active matrix color TFT LCD Resolution 1280x1024 pixels Display Dot 1280x (RGB) x 1024 Display Area 337.92mm(H) x 27.336mm(V) Pixel Pitch 0.294mm(H) x 0.294mm(V) Display Color 16.2M (true) Lamp Frequency...

  • Page 13: Support Timing

    All manuals and user guides at all-guides.com Supported Timing Horizontal Vertical Modes Resolution Frequency Frequency 640x480 31.469 59.940 640x480 37.500 75.000 800x600 37.879 60.317 SVGA 800x600 46.875 75.000 VESA 1024x768 48.363 60.004 1024x768 56.476 70.069 1024x768 60.023 75.029 1280x1024 64.000 60.000 SXGA 1280x1024...
  • Page 14 All manuals and user guides at all-guides.com PIN NO. DESCRIPTION PIN NO. DESCRIPTION TMDS Data 2- TMDS Data 3- TMDS Data 2+ +5V Power TMDS Data 2/4 Shied Ground (for +5V) TMDS Data 4- Hot Plug Detect TMDS Data 4+ TMDS Data 0+ DDC Clock TMDS Data 0-...

  • Page 15: Block Diagram

    All manuals and user guides at all-guides.com Monitor Block Diagram The LCD MONITOR will contain a main board, an inverter board, adapter, keypad board and audio board which house the flat panel control logic, brightness control logic and DDC. The Inverter board will drive the backlight of panel. The adapter will provide the 12V DC-power to inverter/power board and main board.

  • Page 16: Main Board Diagram

    All manuals and user guides at all-guides.com Main Board Diagram LCD Interface EEPROM 24C16 Scaler TSU56AK Crystal (Include: ADC, OSD etc) 14.318MHZ D-SUB Connector Connector OSD Control Interface (Keypad) EEPROM EEPROM 24C02 24C02...

  • Page 17: Software Flow Chart

    All manuals and user guides at all-guides.com Software Flow Chart 1) MCU initialize. 2) Is the eeprom blank? 3) Program the eeprom by default values. 4) Get the PWM value of brightness from eeprom. Check the pin PANEL1 and PANEL2 to tell which panel to get with it.

  • Page 18: Main Board Layout

    All manuals and user guides at all-guides.com Main Board Layout Label Part Number Description U301 56L1133 34 M24C02-WMN6T SMT U302 56L1133 34 M24C02-WMN6T SMT U601 56L1125137SZ6 W78E65P-40 X401 93L 22 53 CRYSTAL 14.318MHz U401 56L 562 82 SCALER IC TSU16AK Y601 93L 22 55 J 20MHZ...
  • Page 19 All manuals and user guides at all-guides.com The step between front bezel and back cover shall be within specification. Top and Bottom Left and Right Back cover & Bezel concavity Back cover & Bezel concavity 0.8mm ≤ A ≤ 1.3 mm 0.8mm ≤...
  • Page 20 All manuals and user guides at all-guides.com Top and Bottom Left and Right Back cover & Bezel step Back cover & Bezel step 0mm ≤ D ≤ 0.8 mm 0mm≤ D ≤ 0.8 mm LCD Horizontally The angle between front bezel and LCD unit in bottom side should not large than 1.0mm.
  • Page 21 All manuals and user guides at all-guides.com The distance of the LCD display unit from left side to right should not large than 4.0mm. Tilt Base Rotation Tilt up 15 ± 2°/ down 5 ±2° Plastic Material For TCO99 Front Bezel ABS 94HB Back Cover ABS 94HB The Others ABS 94HB For MPRII...

  • Page 22: Front Bezel

    All manuals and user guides at all-guides.com Front Bezel Item Description >/Volume </Volume...

  • Page 23: Rear Bezel

    All manuals and user guides at all-guides.com Rear Bezel Item Description D-SUB CABLE DC-Jack Power Cable AC POWER CORD External Adapter DVI CABLE AUDIO CABLE...

  • Page 24: Chapter 2 Operating Instructions

    All manuals and user guides at all-guides.com Chapter 2 Operating Instructions Press the power button to turn the monitor on or off. The other control buttons are located at front panel of the monitor. By changing these settings, the picture can be adjusted to your personal preferences.

  • Page 25: Front Panel Controls

    All manuals and user guides at all-guides.com Front Panel Control • Power Button: Press this button to turn the monitor ON or OFF, And display the monitor’s state. • Menu / Enter : Activate OSD menu when OSD is OFF or activate/de-activate adjustment function when OSD is ON or Exit OSD menu when in Volume Adjust OSD status.

  • Page 26: Adjusting The Picture

    All manuals and user guides at all-guides.com Adjusting the Picture a. How to Adjust a Setting 1. Press the MENU-button to activate the OSD window. 2. Press <or >to select the desired function. 3. Press the MENU-button to select the function that you want to adjust. 4.
  • Page 27 All manuals and user guides at all-guides.com II. Dual-Input Model, Analog Signal Input III. Dual-Input Model, Digital Signal Input...
  • Page 28 All manuals and user guides at all-guides.com b. The Description For Control Function Main Sub Menu Menu Menu Description Item Icon Icon Contrast Contrast from Digital-register. Brightness Backlight Adjustment Adjust Picture Phase to reduce Horizontal-Line Focus noise Clock Adjust picture Clock to reduce Vertical-Line noise. H.
  • Page 29 All manuals and user guides at all-guides.com Main Menu Sub Menu Menu Description Icon Item Icon Auto Config Auto Adjust the H/V Position, Focus and Clock of picture. (Analog-Only Model) Analog Select input signal from analog (D-Sub) (Dual-Input Digital Select input signal from digital (DVI) Model) Show the resolution, H/V frequency and input port Information...

  • Page 30: Hot-Key Menu

    All manuals and user guides at all-guides.com Hot-Key Menu a. Outline b. The Description For Hot-Key Function Item Operation Icon Description When the OSD is closed, press Volume of Audio adjustment. The Volume Left or Right button will be Audio will be Mute when volume=0 Volume Hot-Key Function OSD Message a.

  • Page 31: Logo

    All manuals and user guides at all-guides.com Logo When the monitor is power on, the LOGO will be showed in the center, and disappear slowly. How To Optimize The DOS-Mode Plug And Play Plug & Play DDC1/2B Feature This monitor is equipped with VESA DDC1/2B capabilities according to the VESA DDC STANDARD.

  • Page 32: Chapter 3 Machine Disassembly

    All manuals and user guides at all-guides.com Chapter 3 Machine Disassembly This chapter contains step-by-step procedures on how to assemble the monitor for maintenance. Disassembly Procedure Disassemble the base 1. Remove hinge cover. (Fig 1) 2. Remove four screws to release stand base. (Fig 2) Fig 1 Fig2...
  • Page 33 All manuals and user guides at all-guides.com Disassemble the front cover 1. Remove seven screws to release front bezel. (Fig 3) 2. Remove connector wire with keyboard and main board. (Fig 4) 3. Remove two screws to release keyboard. (Fig 5) 4.
  • Page 34 All manuals and user guides at all-guides.com Fig 5 Fig 6 Fig 7...
  • Page 35 All manuals and user guides at all-guides.com Disassemble the rear bezel Disassemble the shield 1. Remove two screws to release the shield. (Fig 8) 2. Remove the shield as arrow direction. Fig8...
  • Page 36 All manuals and user guides at all-guides.com Disassemble the main board 1. Remove four screws to release main board. (Fig 9) 2. Remove connector wires with main board and Inverter board, main board and keyboard, main board and panel. (Fig 10) Fig 9 Fig10...
  • Page 37 All manuals and user guides at all-guides.com Disassemble the Inverter board 1.Remove four screws to release Inverter board. (Fig 11) 2. Remove connector wires with Inverter board and panel. (Fig 12) Fig11 Fig12...
  • Page 38 All manuals and user guides at all-guides.com Disassemble the panel 1. Remove four screws (right and left) to release metal frame. (Fig 13) Fig13...

  • Page 39: Chapter 4 Troubleshooting

    All manuals and user guides at all-guides.com Chapter 4 Troubleshooting This chapter provides troubleshooting information for the AL1722: 1. No power No power Press power key and look if the picture is normal Measure 12V input voltage Check the adapter...
  • Page 40 All manuals and user guides at all-guides.com 2. No picture (LED is orange) No picture Y601 oscillate waveform Key is under control? is normal Replace Y601 X401 oscillate waveform is normal Replace U601 Replace X401 Replace U401 Check if the sync signal from computer is output and video cable is connected normally Input the sync signal of computer,...
  • Page 41 All manuals and user guides at all-guides.com 3. Panel Power Circuit Measure Q204 base is high level? Y601 oscillate waveform is normal Check Q204 and Q203 are Replace Y601 broken or CN503 solder? Replace U601 Check Correspondent component. Replace U401 Replace PANEL...
  • Page 42 All manuals and user guides at all-guides.com 4. Keypad Board OSD is unstable or not working Connect Keypad Board Is Keypad board connecting normally Is Button Switch normally Replace Button Switch Is Keypad board normally Replace Keypad Board Check main board...
  • Page 43 All manuals and user guides at all-guides.com 5. Inverter Board No Backlight Check CON102 Pin5/6 =12V? Change F902 Check D201/Q209/Q210/ D202/Q211/Q212 Check ON/OFF signal Check Interface board Check U201 pin9=12V ? Change Q201 or Q202 Check the pin1 of U201 have saw tooth wave Change U201 Check D201(-), D202(-) have the output of square wave at short time.
  • Page 44 All manuals and user guides at all-guides.com 6.No Audio Mute and volume setting is ok? Reset mute and volume Check power supply of U701 is 12V? Check connecting is ok? Check input signal of U701is ok? Reconnect Check correspondent component Replace U701 Replace speaker...

  • Page 45: Chapter 5 Connector Information

    All manuals and user guides at all-guides.com Chapter 5 Connector Information The following figure shows the connector locations on the monitor board: 15 – Pin Color Display Signal Cable (D-sub) PIN NO. DESCRIPTION PI N NO. DESCRIPTION Green Logic Ground Blue Monitor Ground Monitor Ground...

  • Page 46: Chapter 6 Fru (Field Replacement Unit) List

    FRU (Field Replaceable Unit) List This chapter gives you the FRU (Field Replaceable Unit) listing in global configurations of AL1722.Refer to this chapter whenever ordering for parts to repair or for RMA (Return Merchandise Authorization). NOTE: Please note WHEN ORDERING FRU PARTS, that you should check the most up-to-date information available on your regional web or channel (http://aicsl.acer.com.tw/spl/).

  • Page 47: Exploded Diagram

    All manuals and user guides at all-guides.com Exploded Diagram (Model: AL1722)
  • Page 48 All manuals and user guides at all-guides.com Part List Item Picture Description Part No. 33L4636 FV L/33L4637 Hinge cover FV L Stand base 34L1189 FV B Front cover 34L1187CGE B Rear cover 34L1188AFV 2B...
  • Page 49 All manuals and user guides at all-guides.com Shield 85L 641 1 Metal frame 15L5921 5 Panel 750LLS70U21 Power board IDPC 7425C3...
  • Page 50 All manuals and user guides at all-guides.com Main board AIC780KS2AE Key board AIK780KB4 78L 332 1 L/78L 332 Speakers...
  • Page 51 All manuals and user guides at all-guides.com...

  • Page 52: Chapter 7 Schematic Diagram

    All manuals and user guides at all-guides.com Schematic Diagram Analog and Digital Input CN301 DB15 FB301 　 1/16W R301 　 1/16W C304 0.047uF FB302 　 1/16W R302 　 1/16W C305 0.047uF FB303 1/16W R303 1/16W C306 0.047uF 　 　 R304 　...

  • Page 53: Tsu56Ak

    All manuals and user guides at all-guides.com TSU56AK VCC3.3 FB401 VCC3.3 600 OHM C405 10uF/16V VPLL VDVI VDPLL C406 C407 C408 C409 C410 C411 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1u U401 TSU56AK RIN0 LVA3p/GA3P GNDR RIN0M LVA3M/GA3N GIN0 LVACKP/NC GNDG GIN0M LVACKM/NC...

  • Page 54: Lvds

    All manuals and user guides at all-guides.com LVDS PA[0..9] RB[0..5] PA[0..9] RB[0..5] PA[0..9] RB1P PA[0..9] LVA3P RA1P RB1N LVA3M FB0N RA1N RB2P RA3N LVACKP RA2P FB0P RB2N RA3P LVACKM RA2N RB3P LVA2P FB1N RA3P RB3N RA2N LVA2M RA3N RA2P FB1P GB[0..5] GB[0..5] GA[0..3]...

  • Page 55: Dc Power

    All manuals and user guides at all-guides.com DC Power VCC5V+ VCC5V VCC12V D202 GS1D R202 CN201 　 1/16W ON_OFF R201 4.7K 　 1/16W C209 VCC12V VCC12V D201 SS14 C201 R212 4.7K 1/16W 47uF/16V 0.1u 　 VCC5V+ VCC5V VCC5V VCC5V onBACKLITE 6 0.1uF Q201 PMBS3904...

  • Page 56: Mcu/Key Board Connector

    All manuals and user guides at all-guides.com MCU/ Key Board Connector VCPU VCPU R602 RP601 R637 R638 R601 C601 RP602 1/16W 　 0.1uF 1/16W 　 1/16W 1/16W 1/16W 　 　 　 C602 　 1/16W 22pF U601 POWER EA/VP P0.0 Y601 MENU P0.1 20MHz...

  • Page 57: Audio

    All manuals and user guides at all-guides.com Audio VCC12V_AUDIO VCC12V_AUDIO + C701 + C702 C703 470uF/16V 470uF/16V 0.1uF U701 TDA7496L MUTE AUDIO_SD CN701 R701 10K 1/16W C704 0.47uF/16V C705 　 OUTL R703 C706 0.47uF/16V OUTR D701 10K 1/16W R704 100 1/16W 　...

  • Page 58: Inverter Board

    All manuals and user guides at all-guides.com Inverter Board Q203 SI4431 OR AO4411 L201 150UH F201 L205 4A/63V +12V 71A55-19 Q202 R224 R225 R226 R227 C202 C201 C230 Q201 DTA144WKA D203 0.1U/25V 150U/25V 1000P/50V R212 R216 PT201 DTC144WKA 3.9K C213 C204 C211 Q209...
  • Page 59 All manuals and user guides at all-guides.com +12V CON101 U101 R102 +12V_POWER( 88A304-1S) F101 L101 SI-8050SD TO263 R103 5A/63V(88A304-1S) L102 Vout INDUCTOR(71L55-28) C101 C102 150UH 220 uF/25V 220 uF/25V C108 0.1 uF/25V D101 GND_F SR34 OR SMAL340 R101 C109 OPEN 0.1 uF/25V C0N102 ON/OFF...

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