Acer AL2002 AL2002 Service Guide

Acer AL2002 Manual

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  • Acer AL2002 | AL2002 Service Guide - Page 1
    LCD Color Monitor: T20BNUW-G1 Model Name: ACER AL2002W-Dual Service Manual Table of Contents Important Safety Notice 01 01. Product Overview 02 02. General Requirement 02 03. Electrica Related Information 03 04. Flat Panel -2 User s Manual Appendix-3 Quick Start Guide Appendix-4 Spare Parts List
  • Acer AL2002 | AL2002 Service Guide - Page 2
    Important Safety Notice ACER AL2002W 1 Go to cover page Product Anouncement: This product is certificated to meet RoHS Directive and Lead-Free produced definition. Using approved critical components only is recommended when the situation to replace defective parts. Vender assumes no liability
  • Acer AL2002 | AL2002 Service Guide - Page 3
    2 Go to cover page 1. Product Overview: This document defines the design and performance requirements for the Liteon standard 20" wide flat panel monitor. The display element shall be a 20" inch diagonal, WSXGA (1680 x 1050) resolution, TFT-LCD (Thin Film Transistor Liquid Crystal Display. Video
  • Acer AL2002 | AL2002 Service Guide - Page 4
    1 illustrates the various electrical sub-system. 3.1. Product Block Diagram The LCD monitor will contain an interface board, a Power / Inverter board, and a function key board. The interface block will house the flat panel control logic, brightness control logic, and DC-DC conversion to supply the
  • Acer AL2002 | AL2002 Service Guide - Page 5
    Specification 4 Go to cover 76Hz 205MHz 0.7Vp-p 75Ω Separate SYNC, Composite Sync or Sync on Green are supported 50Ω H 30kHz ~ 81kHz V 56Hz ~ 76Hz 165MHz 150mV≦Vp-p≦1560mV Input Impedance Suspend, Active Off Power Off User's Control Front Panel Buttons Dimming control range (max-min/max) x 100
  • Acer AL2002 | AL2002 Service Guide - Page 6
    cover page captive screw locks, which will be adequate for hand tightening. The monitor connection may use small screws. 3.3.3. Connector Pin Assignment A. DSUB Pin 23 TMDS Clock + 24 TMDS Clock - C. Power Board Connector Pin Signal 1 5.2V 2 5.2V 3 5.2V 4 5.2V 5 GND 6 GND 7 GND
  • Acer AL2002 | AL2002 Service Guide - Page 7
    D. Flat Panel Connector 6 Go to cover page 3.4. Input Signals (Analog RGB Signal Input): 3.4.1. Video Input Signal Ranges No. Symbol Item Min Normal Max Unit Remark 1 Fh Horizontal Frequency 30 81 kHz Minimum range 2 Fv Vertical Frequency 56 76 Hz Minimum range 3 Fclk Locked Pixel
  • Acer AL2002 | AL2002 Service Guide - Page 8
    high or active low, depending upon the timing. The Vertical Sync (VS) TTL signal is used to initiate monitor sync input to the driver is 1.6 mA. When logic 1 is asserted, the maximum current source from the driver to any single monitor sync input is 400mA. 3.4.7. Abnormal Signal Immunity The monitor
  • Acer AL2002 | AL2002 Service Guide - Page 9
    to cover page 3.5.1. The interface board will house the Panel-Link receiver , and transmitting TTL level signals into LCD Module to driver the LCD display On / Off Switch The monitor shall have a power control switch visible and accessible on the front of the monitor. The switch shall have no
  • Acer AL2002 | AL2002 Service Guide - Page 10
    9 Go to cover page B. OSD Controls Item Description Brightness Backlight Luminance of the LCD panel is adjusted. Contrast A gain of R,G can be selected. 3.7. Monitor Modes and Timing Capability: 3.7.1. Format and Timing The monitor shall synchronize with any vertical frequency from 56 to
  • Acer AL2002 | AL2002 Service Guide - Page 11
    of input signals from the computer shall cause damage to the flat panel or any other component of the monitor. The LCD panel interface shall support the TFT standard. 3.9. DC - AC Inverter Requirements: The frequencies used by the DC - AC inverter used to power the backlight shall be chosen so as
  • Acer AL2002 | AL2002 Service Guide - Page 12
    11 Go to cover page Table 2. AC TO DC Converter Requirements Input Voltage Range The be from 47.5 to 63Hz over the specified input voltage range. Power Consumption Power consumption for the monitor shall be less than 49W over the specified voltage and frequency ranges. In power off mode the
  • Acer AL2002 | AL2002 Service Guide - Page 13
    FLAT PANEL: 4.1. General Requirements The panel used as the display device shall be a WSXGA resolution, 20" diagonal, TFT-LCD. 4.2. Panel Timings The controller included with the monitor shall translate all video timings from the CPU that meet the timing requirements listed in Panel specification
  • Acer AL2002 | AL2002 Service Guide - Page 14
    warranty given by the panel manufacturer. 4.5.3. Light Leakage Except for the active display area, there shall be no light emission visible from any angle from any other part of the display. For this test, the ambient illumination will follow the panel specification in the minor (vertical) or major
  • Acer AL2002 | AL2002 Service Guide - Page 15
    cover page 4.5.6. Smudges, Streaks and Smears When viewing the panel panel specification, over the life of the product, variation of parameters specified in Panel specification points luminance in front of monitor after at least 30 minutes distance 20 cm from the LCD surface and at 0 viewing angle
  • Acer AL2002 | AL2002 Service Guide - Page 16
    minimum luminance in front of monitor after at least 30 minutes warm up. It shall be test at 1680x1050/60Hz mode and full white/full black square pattern with contrast/brightness in default value. The values specified are at an approximate distance 20 cm from the LCD surface and at 0 viewing angle
  • Acer AL2002 | AL2002 Service Guide - Page 17
    16 Go to cover page 5.5. Chromaticity The color chromaticity is LCD surface and at 0 viewing angle. The brightness at 6500K Preset mode shall be 240 cd/m² min. (M201EW02 V1) Note: Per panel specification, over the life of the product, variation of parameters specification Panel specification
  • Acer AL2002 | AL2002 Service Guide - Page 18
    17 Go to cover page 6.4. Vibration Test Procedure 6.4.1. Vibration System. Perform in accordance with Liteon Spec. 6.4.2. Fixturing. The packaged product shall be secured to the vibration table to prevent
  • Acer AL2002 | AL2002 Service Guide - Page 19
    ACER AL2002W Go to cover page 9. PACKING EXPLODED DRAWING: 4 3 Left EPS LCD MONITOR 10 REAR SIDE Right EPS 2 SIGNAL CABLE 8 12 TOP VIEW 11 STAND 5 DVI CABLE(OPTION) 13 9 7 R L TOP POWER CODE BOTTOM Turn 90 0 1 6 ITEM QT'Y PART WIRING TIES USER'S MANUAL LCD MONITOR STAND PE-BAG
  • Acer AL2002 | AL2002 Service Guide - Page 20
    DIAGRAM: 1 2 3 45 ACER AL2002W 19 Go to cover page 6 7 14 13 12 15 10 9 8 11 ITEM PART NO. PART NAME Q'TY 1 7737641200P0A RC 1 2 7737816380P0A BRACKET ASS'Y 1 3 7746505130P0A INSULATOR 1 4 5114300811P POWER BD 1 5 5113301834P INTERFACE BD 1 6 PANEL 1 7 7742240251P0A FC
  • Acer AL2002 | AL2002 Service Guide - Page 21
    11. Schematics and Layouts: 11.1 ACER_AL2002W (T20BAUW-G1)_BLOCK DIAGRAM 1 2 3 4 5 6 7 8 9 10 11 12 13 A A B B C C D D E E F F G G 1 2 3 4 5 6 7 8 9 10 11 12 13 SCHEMATIC REV 01 PTB-1740 5 Oct. 2006 PCB No. ACER AL2002W 20 Go to cover page
  • Acer AL2002 | AL2002 Service Guide - Page 22
    11.2 ACER_AL2002W (T20BAUW-G1)_SCHEMATICS_POWER BOARD A B C D E F G 1 2 3 4 5 6 7 8 9 10 L1 G3 N2 P801 F801 3.15AL250V C801 0.33U/275V GND T802 RING CHOKE 1 1 P104 2P 22 GND D115 1N4148 GND 8 9 10 11 12 13 PCB No. 6832180200P0A A B C D E F G ACER AL2002W 21 Go to cover page
  • Acer AL2002 | AL2002 Service Guide - Page 23
    LBADC_IN2 NC VCC5V VCC3V3 VLCD VCC3V3 VLCD D 6.KEY & PANEL INTERFACE 2.POWER E BKLT_ADJ BKLT_EN PANELVCC_EN BKLT_ADJ BKLT_EN PANELVCC_EN VCC5V VCC5V VCC3V3 VCC3V3 VCC1V8 VCC1V8 VLCD F VLCD VDD VDD 2.POWER G 10 11 12 13 PCB No. 6832174000P01 ACER AL2002W 22 Go to cover page
  • Acer AL2002 | AL2002 Service Guide - Page 24
    TAB 4 C314 C315 1 ADJ TAB 4 C316 G 10uF/16V AIC1084-33CM 100uF/16V 10uF/16V AIC1117-18PY 100uF/16V G 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. 6832174000P01 ACER AL2002W 23 Go to cover page
  • Acer AL2002 | AL2002 Service Guide - Page 25
    GND 1 2 3 4 T51 1 3 R325 10K T53 2 Q303 MMBT3904 R330 2K4 T54 DDC_WPn T56 T57 DDC_SCL_VGA DDC_SDA_VGA DDC_WPn DDC_SCL_VGA DDC_SDA_VGA F G 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. 6832174000P01 ACER AL2002W 24 Go to cover page
  • Acer AL2002 | AL2002 Service Guide - Page 26
    24C02 T83 C346 C347 D322 D323 G MMSZ5232B MMSZ5232B 100pF 100pF DDC_SCL_DVI DDC_SDA_DVI T84 G DDC_SCL_DVI DDC_SDA_DVI DDC_SCL_DVI DDC_SDA_DVI T85 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. 6832174000P01 ACER AL2002W 25 Go to cover page
  • Acer AL2002 | AL2002 Service Guide - Page 27
    H: UART on GPO, L: UART on DDC. LBADC_IN2 LBADC_IN1 LBADC_IN2 LBADC_IN1 R368 820K C382 0.1uF R369 820K C383 0.1uF 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. 6832174000P01 A B C D E F G ACER AL2002W 26 Go to cover page
  • Acer AL2002 | AL2002 Service Guide - Page 28
    11.8 ACER_AL2002W (T20BAUW-G1)_SCHEMATICS_KEY & PANEL INTERFACE 1 2 3 4 5 6 7 8 9 10 11 12 13 VLCD VLCD P305 P306 A B CH3P_LV_E C392 0.1uF P308 1 2 3 4 5 JWT-A2001WV2-05 E F G 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. 6832174000P01 ACER AL2002W 27 Go to cover page
  • Acer AL2002 | AL2002 Service Guide - Page 29
    POWER KEY B S602 MENU KEY C S603 DOWN KEY S604 UP KEY D S604 SELECT KEY E BLUE AMBER D601 F GND G 8 9 10 11 12 13 PCB No. 6832174100P01 ACER AL2002W 28 Go to cover page
  • Acer AL2002 | AL2002 Service Guide - Page 30
    11.10 ACER_AL2002W (T20BAUW-G1)_LAYOUTS_POWER BOARD 1 2 3 TOP SILK 4 5 6 7 8 9 10 11 12 13 BOTTOM SILK A A B B C C D D E E F F G G 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. ACER AL2002W 29 Go to cover page
  • Acer AL2002 | AL2002 Service Guide - Page 31
    11.11 ACER_AL2002W (T20BAUW-G1)_LAYOUTS_INTERFACE BOARD 1 2 3 4 5 6 7 8 9 10 11 12 13 A A B B C C D D E E F F G G 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. ACER AL2002W 30 Go to cover page
  • Acer AL2002 | AL2002 Service Guide - Page 32
    11.12 ACER_AL2002W (T20BAUW-G1)_LAYOUTS_KEYPAD 1 2 3 4 5 6 7 8 9 10 11 12 13 A A B TOP SILK B C C BOTTOM SILK D D E E F F G G 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. ACER AL2002W 31 Go to cover page
  • Acer AL2002 | AL2002 Service Guide - Page 33
    specific positions of Bracket Chassis Base. 2 Assembe the Power Board and Interface Board to Bracket S4 Connect FFC cable to the Interface Board. S5 Connect P802 cable to the Interface Board. Chassis Base S6 Use a cross-head screwdriver screwed the No.1 screw on the Power Board. ACER AL2002W
  • Acer AL2002 | AL2002 Service Guide - Page 34
    foam and then put into the carton. 7730303229P0A MANUAL ASSY_ACER_T20ANUW_AL2002W_US 6716000700P CABLE_POWER_N_SHLD_1800mm_BLACK_U/C 7737716351P0A BASE ASSY_#6800_ABS 94HB_ACER_T20ANUW_ S31 Tape the carton label on the specific position of carton 7735431081P0A Carton Label S32 Put carton
  • Acer AL2002 | AL2002 Service Guide - Page 35
    ACER AL2002W ACER AL2002W DISASSEMBLY PROCEDURES Part Number Parts Usage Part Cover Hinge 3 4 1 2 4 Screw Size=M4x7; Torque=11~13KGFKGF.CM 2 4 1 1 2 3 4 - 1 1 4 Key Function Board THREAD_ROUND_M3_8L_YELLOE S9 Use both hand to remove the LCD panel module and put Front Bezel aside.
  • Acer AL2002 | AL2002 Service Guide - Page 36
    - - Panel Lamp cables 1 Refer to LCD Panel Inspection Criteria of supplier for the detail. - 3 - 1 2 - 4 4 2 1 Screw Size=M4x8; Torque:=9~10KGF.CM 1 3 Screw Size=M3x6; Torque:=9~10KGF.CM 3 FFC 1 - Power Board 1 - 1 1 P802 1 - Interfac e Board - Bracket Chassis Base -
  • Acer AL2002 | AL2002 Service Guide - Page 37
    Appendix 4: Troubleshooting Power board Check output voltage +5V and +22V whether if correct supply NG Check power switch whether if turn on OK It is not power board problem. NG Turn switch on. circuit around I802, I803 and the other components and repair them ACER AL2002W 1 Go to cover page
  • Acer AL2002 | AL2002 Service Guide - Page 38
    2 ACER AL2002W Go to cover page Inverter circuit on the power board Check C102 pin is around . Appendix 4: Troubleshooting OK It is not inverter board problem. Check R105 or C102 whether to be NG damaged. And, printed wire between them is opened. NG Check CCFL and repair them. Reconnect
  • Acer AL2002 | AL2002 Service Guide - Page 39
    Appendix 4: Troubleshooting No display on the screen (Screen is black, colour of LED is amber.) ACER AL2002W 3 Go to cover page Does OSM is connected normally. (VGA or DVI) OK Proceed to 'Checking the resolution change IC movement' section NG Proceed to 'No OSM display' section NG Input the
  • Acer AL2002 | AL2002 Service Guide - Page 40
    ACER AL2002W Go to cover page Appendix 4: Troubleshooting 'MENU' key. Check if the LCD module signal cable is connected between the Interface Board and LCD Module. OK NG The LVDS cable power is supplied on P306 pin1, pin2, pin3 to the LCD panel OK Check the P306 all LVDS signals OK Check if the
  • Acer AL2002 | AL2002 Service Guide - Page 41
    inverter PWB? (input from Power Board) Appendix 4: Troubleshooting Failure Point: NG 1. Inverter cable disconnected. 2. Power board is failure. ACER AL2002W 5 Go to cover pin50 is a PWM signal OK Failure Point: Backlight unit of LCD module is failure. Failure Point: 1. Printed wire is open
  • Acer AL2002 | AL2002 Service Guide - Page 42
    6 ACER AL2002W Go to cover page Appendix 4: Troubleshooting Abnormal Screen: Abnormal screen for VGA source OK Check all LVDS signals being output to P306 from I306? OK Proceed 'Checking the resolution changed IC movement' section Failure Point: In the case of the RED signal. (Green and Blue
  • Acer AL2002 | AL2002 Service Guide - Page 43
    Appendix 4: Troubleshooting Abnormal Screen: Abnormal screen for DVI-D source ACER AL2002W 7 Go to cover page Check the TMDS signal from computer input P303 of DVI-D video connector Printed wire is open between I306 and P306. OK Proceed 'Checking the resolution changed IC movement' section
  • Acer AL2002 | AL2002 Service Guide - Page 44
    8 ACER AL2002W Go to cover page Abnormal OSM display adjust problem Appendix 4: Troubleshooting Check the input TTL level whether to change when press the function keys on the P307 pin3, pin4 (normal is high level when to press
  • Acer AL2002 | AL2002 Service Guide - Page 45
    Appendix 4: Troubleshooting Abnormal plug and play operation for VGA ACER AL2002W 9 Go to cover page Confirm the host computer supplies DDC2 mode. NG Failure Point: The host computer is not communicating in DDC2 mode. OK Check the voltage on
  • Acer AL2002 | AL2002 Service Guide - Page 46
    10 ACER AL2002W Go to cover page Appendix 4: Troubleshooting Abnormal plug and play operation for DVI - D Confirm the host computer supplies DDC2 mode. NG Failure Point: The host computer is not communicating in DDC2
  • Acer AL2002 | AL2002 Service Guide - Page 47
    Troubleshooting the resolution change IC movement' section Checking the control circuit of vertical sync pulse for VGA Check the vertical sync Proceed 'Checking the resolution change IC movement' section Checking the TMDS signal input for DVI-D ACER AL2002W 11 Go to cover page Check the TMDS
  • Acer AL2002 | AL2002 Service Guide - Page 48
    12 ACER AL2002W Go to cover page Appendix 4: Troubleshooting Checking the resolution change IC movement 1. Check +3V3 supplied on I306 pin2, pin25, pin53, pin47, pin74, pin82, pin91, pin92, pin101. pin110, pin116 2. Check +3V3 supplied on I309 pin8. NG Proceed '
  • Acer AL2002 | AL2002 Service Guide - Page 49
    Model Name: ACER_AL2002W Model Number: 4092531143P Description: T20BNUW-G1(99)#U14(C)_ACER_AL2002W BOARD ASSY'S CKD_ID FOR U.S.A. (LITE-ON Part No.) 0 5112403532P 0 5113102727P 0 5113301834P 0 5113800401P 0 5114300811P DESCRIPTION T20BNUW-G1_ACER_PACKING ASSY T20BNUW-G1(99)_ACER_LCD
  • Acer AL2002 | AL2002 Service Guide - Page 50
    CAPACITORS CKD_ID FOR U.S.A. (LITE-ON Part No.) C310 C311 C312 C313 C313 C314 C315 C315 C316 C317 C318 C319 C320 C321 C322 C323 C324 C325 C326 C327 C328 C329 C330 C331
  • Acer AL2002 | AL2002 Service Guide - Page 51
    CAPACITORS CKD_ID FOR U.S.A. (LITE-ON Part No.) C358 C359 C360 C361 C362 C363 C363 C364 C365 C366 C367 C368 C368 C369 C370 C371 C372 C373 C374 C375 C376 C377 C379 C380
  • Acer AL2002 | AL2002 Service Guide - Page 52
    CAPACITORS CKD_ID FOR U.S.A. (LITE-ON Part No.) C820 C821 C822 C822 C823 C823 C824 C824 C825 C827 C828 C828 C830 6311547945P10 6311547945P24 6338547215P30 6338110485P30 COILS AND FILTERS CKD_ID FOR U.S.A. (LITE-ON Part No.) FB301 FB302 FB303 FB304 FB305 FB306 FB307 FB308 FB309 FB310 FB311
  • Acer AL2002 | AL2002 Service Guide - Page 53
    D107 D108 D108 D109 D109 D110 D110 D112 D112 D113 D113 D114 D114 D115 D115 FOR U.S.A. (LITE-ON Part No.) 6412001707P 6412025507P 6412001707P 6412025507P 6412001707P 6412025507P 6412001707P 6412025507P 6412001707P 6412025507P 6412001707P 6412025507P 6412001707P 6412025507P 6412001707P 6412025507P
  • Acer AL2002 | AL2002 Service Guide - Page 54
    D321 D321 D322 D322 D323 D323 D601 D601 D801 D803 D804 D805 D806 D807 FOR U.S.A. (LITE-ON Part No.) 6412019518P 6412027818P10 6412019518P 6412027818P10 6412019518P 6412027818P10 6414056038P 6414056108P 6414056038P 6414056108P 6414056038P 6414056108P 6413030038P 6414056038P 6414056108P 6414056038P
  • Acer AL2002 | AL2002 Service Guide - Page 55
    DIODES CKD_ID D808 D809 D809 D810 D810 D811 D812 ZD801 FOR U.S.A. (LITE-ON Part No.) 6412010907P 6412000020P00 6412027820PG0 6413045010P00 6413045020PG0 6414240054P 6412010907P 6414220024P ICS CKD_ID I101 I301 I301 I302 I302 I303 I303 I304 I304 I305 I305 I306 I307 I308 I308 I309 I309 I801 I802
  • Acer AL2002 | AL2002 Service Guide - Page 56
    R330 R331 R332 R333 R334 R335 R336 R337 R338 R339 R340 R341 R342 R343 FOR U.S.A. (LITE-ON Part No.) 6224610034P 6224613024P 6213230557P 6224636514P 6224613024P 6224640204P 6212120054P00 6212120254P 6212120054P00 6212110254P 6212110554P 6212110354P 6252100156P 6252100256P 6252470156P 6252100056P
  • Acer AL2002 | AL2002 Service Guide - Page 57
    RESISTORS CKD_ID FOR U.S.A. (LITE-ON Part No.) R344 R345 R346 R347 R348 R349 R350 R351 R356 R357 R358 R359 R360 R362 R363 R364 R365 R366 R368 R369 R372 R374 R375 R376
  • Acer AL2002 | AL2002 Service Guide - Page 58
    6426014260P70 PACKING ASSYS CKD_ID FOR U.S.A. (LITE-ON Part No.) 1P11 7749205881P0A 1P21 7749106340P0A 1P31 7749002220P0A 1P33 IC-CMOS-AOP607-8P-DIP-AOS FET_AOP609_8P_DIP_AOS IC- DATE CODE LABEL SPONGE_GASKET_EVA_GRAY_L12xW12xH12mm MANUAL ASSY_ACER_T20ANUW_AL2002W_US Page 10 of
  • Acer AL2002 | AL2002 Service Guide - Page 59
    Part No.) Y0A1 7730203466P0A Y0B1 7730203467P0A Y0C1 7730203143P0C Y0D1 7730203137P0A PARTS & MISCELLANEOUS PARTS CKD_ID FOR U.S.A. (LITE-ON Part -CARD(TCO99 CARD)-ACER-ALL MODELS- DESCRIPTION HEAD_M3_1 SCREW-MACHINE-Flat Washer-Pan-M3-6-Zn SCREW-MACHINE-Flat Washer-Pan-M3 BASE ASSY_
  • Acer AL2002 | AL2002 Service Guide - Page 60
    PARTS & MISCELLANEOUS PARTS CKD_ID FOR U.S.A. (LITE-ON Part No.) S602 6853001100P S602 6853001120P S603 6853001100P S603 6853001120P S604 6853001100P S604 6853001120P S605 6853001100P S605 6853001120P TAP1 6876008600P V200 6814202010P24 X301 6449006400P DESCRIPTION

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