Acer AL1722 AL1722 Service Guide

Acer AL1722 Manual

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  • Acer AL1722 | AL1722 Service Guide - Page 1
    Acer AL1722 Service Guide
  • Acer AL1722 | AL1722 Service Guide - Page 2
    Service Guide Version and Revision No. Version 1 1.0 Release Date Jan.12, 2005 Revision Original release 2
  • Acer AL1722 | AL1722 Service Guide - Page 3
    Technology Corp. ACER AL1722 Service Manual. 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
  • Acer AL1722 | AL1722 Service Guide - Page 4
    problems. Reminds you to do specific actions relevant to the accomplishment of procedures. Preface Before using this information and the product it supports, please read the following general information. 1. This Service Guide printed Service Guide. For ACER-AUTHORIZED SERVICE PROVIDERS, your Acer
  • Acer AL1722 | AL1722 Service Guide - Page 5
    used in accordance with the instructions, may cause harmful interference void the user's authority to operate the equipment. 2. Shielded interface cables and AC power cord, monitor to rain or moisture. Dangerously high voltages are present inside the monitor. Do not open the cabinet. Refer servicing
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    operation, use the monitor only with UL listed computers which have appropriate configured receptacles marked between 100 - 240V AC, Min. 3.5A. The wall socket shall be installed near the equipment and shall be easily accessible. For use only with the attached power adapter (output 12V DC
  • Acer AL1722 | AL1722 Service Guide - Page 7
    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
  • Acer AL1722 | AL1722 Service Guide - Page 8
    8 Chapter 2 Induction Electrical Requirements LCD Monitor General Specification LCD Panel Specification Support Timing Block Diagram Main Board Diagram Software Flow chart Main Board Layout Front Bezel Rear Bezel Operating Instructions 9 10 11 12 13 15 16 17 18 22 23 24 Chapter
  • Acer AL1722 | AL1722 Service Guide - Page 9
    Scope This specification defines the requirements for the 17" MICRO-PROCESSOR based Multi-mode supported high resolution color LCD monitor. This monitor can be directly connected to general 15 pin D-sub VGA connector and 24 pin DVI connector. It also supports VESA DPMS power management and
  • Acer AL1722 | AL1722 Service Guide - Page 10
    control : User red/white balance, Green/white balance and Blue/white balance control : Power input : Ambient temperature : Analog input mode : 225 lux 40 cm in front of LCD panel 30 minutes 5 seconds Chroma 7120 signal generator or equivalent, directly Connected to the monitor under test
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    LCD Monitor General Specification Panel type : 17 " active matrix color TFT LCD SAMSUNG LTM170EU-21 Display size Display mode Pixel pitch Horizontal Frequency 30KHz ----83KHz Vertical Frequency 55Hz ------75Hz Plug & play Power Input voltage : VESA DDC2B : 50/60HZ, 100 VAC to 240VAC
  • Acer AL1722 | AL1722 Service Guide - Page 12
    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 80kHz
  • Acer AL1722 | AL1722 Service Guide - Page 13
    Supported Timing Modes Resolution Horizontal Frequency Vertical Frequency VESA VGA support modes to accommodate the above mode and other video modes within the frequency range of the monitor. 80Hz refresh rate Support Monitor should display 80Hz refresh rate mode as emergency mode. Monitor
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    Analog Vertical Sync TMDS Data 1TMDS Data 1+ TMDS Data 1/3 Shield TMDS Data 3- PIN NO. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. DVI Connector layout DESCRIPTION TMDS Data 3- +5V Power Ground (for +5V) Hot Plug Detect TMDS Data 0+ TMDS Data 0TMDS Data 0/5 Shield TMDS Data 5TMDS Data 5TMDS
  • Acer AL1722 | AL1722 Service Guide - Page 15
    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
  • Acer AL1722 | AL1722 Service Guide - Page 16
    Main Board Diagram EEPROM 24C16 MCU LCD Interface Scaler TSU56AK (Include: ADC, OSD etc) Crystal 14.318MHZ OSD Control Interface (Keypad) DVI Connector EEPROM 24C02 D-SUB Connector EEPROM 24C02 16
  • Acer AL1722 | AL1722 Service Guide - Page 17
    Is the power key pressed? 6) Clear all global flags. 7) Are the AUTO and SELECT keys pressed? 8) Enter factory mode. 9) Saving the power key coming from analog or digital port? 16) Display " No Input Signal " message. And go into standby mode after the message disappear. 17) Program the scalar to
  • Acer AL1722 | AL1722 Service Guide - Page 18
    Main Board Layout Label U301 U302 U601 X401 U401 Y601 U201 U202 U603 U602 CN301 CN302 CN503 CN201 CN602 U701 CN701 Part Number 56L1133 34 56L1133 34 56L1125137SZ6 93L 22 53 56L 562 82 93L 22 55 J 56G 563 38 56L 563 7 56L 643 5A 56L1133 56 88L 35315F HS 88L 35424F HS 33G802724B H 33L800912L H
  • Acer AL1722 | AL1722 Service Guide - Page 19
    The step between front bezel and back cover shall be within specification. Top and Bottom Back cover & Bezel concavity 0.8mm › A › 1.3 mm Left and Right Back cover & Bezel concavity 0.8mm › A › 1.3 mm Back Cover & Hinge Cover concavity 0mm › B › 0.5mm B
  • Acer AL1722 | AL1722 Service Guide - Page 20
    Top and Bottom Back cover & Bezel step 0mm › D › 0.8 mm Left and Right Back cover & Bezel step 0mm› D › 0.8 mm LCD Horizontally The angle between front bezel and LCD unit in bottom side should not large than 1.0mm. 20
  • Acer AL1722 | AL1722 Service Guide - Page 21
    LCD display unit from left side to right should not large than 4.0mm. Tilt Base Rotation Tilt up 15 Ô 2Ę/ down 5 Ô2Ę Plastic Material For TCO99 Front Bezel ABS 94HB Back Cover ABS 94HB The Others ABS 94HB For MPRII Front Bezel ABS 94HB Back Cover ABS 94HB The Others ABS 94HB GAP Spec
  • Acer AL1722 | AL1722 Service Guide - Page 22
    Front Bezel Item Description 1 >/Volume 2
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    Rear Bezel Item Description 1 D-SUB CABLE 2 DC-Jack Power Cable 3 AC POWER CORD External Adapter 5 DVI CABLE 4 AUDIO CABLE 23
  • Acer AL1722 | AL1722 Service Guide - Page 24
    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. • The power cord should be connected. • Connect the video cable
  • Acer AL1722 | AL1722 Service Guide - Page 25
    . The Auto Adjustment function is used to set the HPos, VPos, Clock and Focus. • Power Indicator: Blue - Power On mode. Orange - Power saving Light blue - Off mode NOTES Notes • Do not install the monitor in a location near heat sources such as radiators or air ducts, or in a place subject
  • Acer AL1722 | AL1722 Service Guide - Page 26
    Adjusting the Picture a. How to Adjust a Setting 1. Press the MENU-button to activate the OSD window. 2. Press to select the desired function. 3. Press the MENU-button to select the function that you want to adjust. 4. Press < or >to change the
  • Acer AL1722 | AL1722 Service Guide - Page 27
    II. Dual-Input Model, Analog Signal Input III. Dual-Input Model, Digital Signal Input 27
  • Acer AL1722 | AL1722 Service Guide - Page 28
    -Line noise Adjust picture Clock to reduce Vertical-Line noise. H. Position Adjust the horizontal position of the picture. V. Position Warm Cool User / Red Adjust the vertical position of the picture. N/A Recall Warm Color Temperature from EEPROM. N/A Recall Cool Color Temperature from EEPROM
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    input signal from analog (D-Sub) (Dual-Input Digital N/A Model) Select input signal from digital (DVI) Information N/A Show the resolution, H/V frequency and input port of current iput timing. Reset N/A Clear each old status of Auto-configuration and set the color temperature to Cool
  • Acer AL1722 | AL1722 Service Guide - Page 30
    Message. Input Not When the Hsync Frequency, Vsync Frequency or Resolution is out of the Supported monitor support range, will show this message. This message will be flying. Cable Not Connected 1.) Analog-Only Model: When the video cable is not connected, will show this message. This message
  • Acer AL1722 | AL1722 Service Guide - Page 31
    This reduces the monitor's internal power supply consumption. After the video input signal is restored, full power is restored and CSA labeled. The voltage rating for the power cord shall be 125 volts AC. Supplied with units intended for connection to power outlet of personal computer: Please use a
  • Acer AL1722 | AL1722 Service Guide - Page 32
    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 Fi3g22
  • Acer AL1722 | AL1722 Service Guide - Page 33
    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. Remove connector wire with keyboard and speakers. (Fig 6) 6. Remove two screws to release speakers (right and left). (Fig 7) Fig 3 Fig 4 33
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    Fig 5 Fig 6 Fig 7 34
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    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 35
  • Acer AL1722 | AL1722 Service Guide - Page 36
    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 36
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    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 37
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    Disassemble the panel 1. Remove four screws (right and left) to release metal frame. (Fig 13) Fig13 38
  • Acer AL1722 | AL1722 Service Guide - Page 39
    This chapter provides troubleshooting information for the AL1722: 1. No power No power Press power key and look if the picture is normal NG Measure 12V input voltage OK NG Check the adapter section Measure U101 PIN2=5V? NG OK Replace U101 NG Y601 oscillate waveform is normal NG
  • Acer AL1722 | AL1722 Service Guide - Page 40
    oscillate waveform is normal NG Replace Y601 OK Replace U601 OK NG Replace X401 NG Check if the sync signal from computer is output and video cable is connected normally Replace U401 NG Input the sync signal of computer, or change the cable OK Replace U401 40
  • Acer AL1722 | AL1722 Service Guide - Page 41
    3. Panel Power Circuit Measure Q204 base is high level? OK NG Check Q204 and Q203 are broken or CN503 solder? Check Correspondent component. NG OK Replace PANEL Y601 oscillate waveform is normal NG Replace Y601 OK Replace U601 NG Replace U401 41
  • Acer AL1722 | AL1722 Service Guide - Page 42
    4. Keypad Board OSD is unstable or not working NG Is Keypad board connecting normally OK NG Is Button Switch normally OK NG Is Keypad board normally OK Check main board Connect Keypad Board Replace Button Switch Replace Keypad Board 42
  • Acer AL1722 | AL1722 Service Guide - Page 43
    5. Inverter Board No Backlight Check CON102 Pin5/6 =12V? NG OK Check ON/OFF signal NG OK Change F902 Check D201/Q209/Q210/ D202/Q211/Q212 Check Interface board Check U201 pin9=12V ? NG OK Change Q201 or Q202 Check the pin1 of U201 have saw tooth wave OK NG Change U201 Check D201(-), D202(-)
  • Acer AL1722 | AL1722 Service Guide - Page 44
    6.No Audio Mute and volume setting is ok? NG OK Reset mute and volume Check power supply of U701 is 12V? NG OK Check input signal of U701is ok? Check connecting is ok? NG Reconnect NG OK Check correspondent component Replace U701 NG Replace speaker 44
  • Acer AL1722 | AL1722 Service Guide - Page 45
    PI N NO. 9. 10. 11. 12. 13. 14. 15. DESCRIPTION +5V Logic Ground Monitor Ground DDC-Serial Data H-Sync V-Sync DDC-Serial Clock PIN NO. 1. 2. 3. 4. 5. 6. PI N NO. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. DESCRIPTION TMDS Data3+ +5V Power Ground Hot Plug Detect TMDS Data0- TMDS Data0+
  • Acer AL1722 | AL1722 Service Guide - Page 46
    FRU (Field Replaceable Unit) listing in global configurations of AL1722.Refer to this chapter whenever ordering for parts to 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
  • Acer AL1722 | AL1722 Service Guide - Page 47
    Exploded Diagram (Model: AL1722) 47
  • Acer AL1722 | AL1722 Service Guide - Page 48
    Part List Item 1 Picture Description Part No. Hinge cover 33L4636 FV L/33L4637 FV L 2 Stand base 34L1189 FV B 3 Front cover 34L1187CGE B 4 Rear cover 34L1188AFV 2B 48
  • Acer AL1722 | AL1722 Service Guide - Page 49
    5 Shield 85L 641 1 6 Metal frame 15L5921 5 7 Panel 750LLS70U21 9 Power board IDPC 7425C3 49
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    10 Main board AIC780KS2AE 11 Key board AIK780KB4 12 Speakers 78L 332 1 L/78L 332 1 R 50
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  • Acer AL1722 | AL1722 Service Guide - Page 52
    25 26 27 29 28 8 15 6 DDC SCL 7 DDC SDA +5V HPD 14 16 11 1/3shield 2/4shield 0/5shield clk shield 3 19 22 18 DAT0+ DAT0DAT1+ 17 10 9 DAT1- 2 DAT2+ DAT2DAT3+ DAT3- 1 13 12 5 DAT4+ DAT4DAT5+ DAT5- 4 21 20 23 clk+ clk- 24 JACK D321 MLL5232B 5.6V D318 MLL5232B 5.6V CLK_DDC DAT_DDC
  • Acer AL1722 | AL1722 Service Guide - Page 53
    BA1N BA2P BA2N BA3P BA3N NC/RB1P 100 GA2 101 GA3 88 BA0 89 BA1 90 BA2 91 BA3 92 BA4 93 BA5 16 RB0 17 RB1 BA[0..5] BA[0..5] 5 RB[0..5] RB[0..5] 5 Direct Bus 3-WIRE R401 NC 4.7K R402 4.7K NC VCC5V R402 4.7K` 1/16W C401 0.1uF 66 REFP 67 REFM NC
  • Acer AL1722 | AL1722 Service Guide - Page 54
    OSP R506 0` 1/16W ESP R507 0` 1/16W R39 R41 15"RSDS 0R NC 17"RSDS 0R 0R C508 + C512 22u0F.1/1u6FV C506 NC RA3N RA3P FB0N FB0P RXE2+ RXEC+ RXE3+ LVB0P LVB1P LVB2P LVBCKP LVB3P LVA0P LVA1P LVA2P LVACKP LVA3P AU 17 QDI 17 CPT 17 INNOLUX 15 HannStar 15 CPT 15 LG 15 R508 NC 3.3V 0R 3.3V 0R
  • Acer AL1722 | AL1722 Service Guide - Page 55
    DC Power GND GND VCC12V GND VCC5V GND CN201 1 3 5 7 9 11 2 ON_OFF 4 DIM 6 VCC12V 8 GND 10 VCC5V 12 GND CONN VCC5V R203 1K` 1/16W VCC12V C202 + 220uF/25V
  • Acer AL1722 | AL1722 Service Guide - Page 56
    P2.7 25 26 27 28 29 30 31 16 T0/P3.4 T1/P3.5 P3.6/WR P3.7/RD 17 18 19 13 P3.1/TXD 11 P3.0/RXD 7 AUDIO_SD R626 10K` 1/16W C612 0.1uF 3 ST_DET1 R637 R638 R639 RP602 10K` 1/16W 10K` 1/16W 10K` 1/16W 10K` 1/16W POWER MENU RIGHT LEFT AUTO LED_B LED_O LED_G 10K` 1/16W 10K` 1/16W NC NC 100`
  • Acer AL1722 | AL1722 Service Guide - Page 57
    /16V 4 C706 0.47uF/16V 9 D701 R704 100` 1/16W 6 D702 LL4148 R705 11 LL4148 10K` 1/16W 12 R706 100` 1/16W INL INR VOLUME STBY MUTE OUTL 17 OUTR 14 SVR 10 VAROUT_R 7 VAROUT_L 5 GND GND GND GND GND GND GND C709 C710 1uF 1uF 1 2 3 13 18 19 20 + + C705 470uF/16V C707
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    D210 RLS4148 1 1 L204 4 2 3 0.1U/25V AOC (Top Victory) Electronics Co., Ltd. Title 2. FOR 17"&15" 4 LAMPS INVERTER Size Document Number IDPC5425C3(715L-1085-1-S) Rev A Date: Thursday, April 03, 2003 Sheet 2 of 2 is power GND C222 0.47U/25V is signal GND 58 2 R241 51K R239 12K D208
  • Acer AL1722 | AL1722 Service Guide - Page 59
    12 11 10 9 8 7 6 5 4 3 2 1 GND GND 5V 5V GND GND 12V 12V DIM GND ON/OFF GND 33A8009-12L-H 5V 12V DIM ON/OFF GND is power GND is signal GND AOC (Top Victory) Electronics Co., Ltd. Title Size A Date: Document Number

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