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Acer AL1702 Service Manual

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Acer AL1702W
Service Guide
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  Summary of Contents for Acer AL1702

  • Page 1 Acer AL1702W Service Guide...
  • Page 2 Service Guide Version and Revision Version Release Date Revision History TPV model Mar.-23-2007 Initial Release T77HRDNBGWAFN...
  • Page 3 Any Acer 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.
  • Page 4 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. 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.
  • Page 5 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 6: Table Of Contents

    Chapter 1 Monitor Features Introduction Electrical Requirements LCD Monitor General Specification LCD Panel Specification Support Timing Monitor Block Diagram Main Board Diagram Software Flow chart Main Board Layout Adjusting the viewing angle Rear Bezel Chapter 2 Operating Instructions External Controls Front Panel Controls Adjusting the picture OSD Message...
  • Page 7: Chapter 1 Monitor Features

    Monitor Features Introduction Scope This specification defines the requirements for the 17” MICROPROCESSOR based Multi-mode supported high resolution color LCD monitor. This monitor can be directly connected to general 15-pin D-sub VGA connector, also supports VESA DPMS power management and plug & play function. There is a build-in stereo audio amplifier with OSD control to drive a pair of speakers.
  • Page 8: Electrical Requirements

    Electrical Requirements Standard Test Conditions All tests shall be performed under the following conditions, unless otherwise specified. Ambient light Viewing distance Warm up time All specifications Measuring equipment Control settings User brightness control User contrast control User red/white balance, Green/white balance and Blue/white balance control Power input Ambient temperature...
  • Page 9: Lcd Monitor General Specification

    LCD Monitor General Specification...
  • Page 11: Lcd Panel Specification

    LCD Panel Specification General Specifications Mechanical Information...
  • Page 12 Optical Specifications...
  • Page 13: Support Timing

    Supported Timing...
  • Page 14: Monitor Block Diagram

    Monitor Block Diagram The LCD MONITOR will contain a main board, a power board, and keypad board which house the flat panel control logic, brightness control logic and DDC. The Inverter board will drive the backlight of panel and the DC-DC conversion, The Adapter will provide the 12V DC-power to inverter/power board.
  • Page 15: Main Board Diagram

    Main Board Diagram LCD Interface Crystal 24MHZ Scalar: RTD2025L QFN-48 RTD2120L-LF (Include: ADC, OSD etc) D-SUB OSD Control Connector Interface (Keypad)
  • Page 16: Software Flow Chart

    Software Flow Chart...
  • Page 17 Remark: 1) MCU initializes. 2) Is the EEPROM blank? 3) Program the EEPROM by default values. 4) Get the PWM value of brightness from EEPROM. 5) Is the power key pressed? 6) Clear all global flags. 7) Are the AUTO and SELECT keys pressed? 8) Enter factory mode.
  • Page 18: Main Board Layout

    Main Board Layout Symbol Description U201 AP1117E33LA U401 IC MCU RTD2120L-LF REALTEK U402 AZ431AN-A-E1 U501 SCALER IC RTD2025L QFN-48 Symbol Description X401 24MHZ/30PF/49US CN201 WAFER 9P RIGHT ANELE PITCH CN202 WAFER CN601 CONN W TO B12P*2 P*2.0 4505-2...
  • Page 19: Adjusting The Viewing Angle

    Adjusting the viewing angle...
  • Page 20: Rear Bezel

    Rear Bezel Item Description Item Description Power Cable Signal Cable...
  • Page 21: Chapter 2 Operating Instructions

    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. •...
  • Page 22: Front Panel Controls

    Front Panel Control...
  • Page 23: Adjusting The Picture

    Adjusting the Picture 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. Press < or > to change the settings of the current function. 5.
  • Page 24 b. The Description For Function Control LEDS...
  • Page 26: Osd Message

    OSD Message a. Outline b. The Description For OSD Message Item Auto Config When Analog signal input, if User Press Hot-Key “Auto”, will show this message, and the Please Wait monitor do the auto config function. Input Not When the Hsync Frequency, Vsync Frequency or Resolution is out of the monitor Supported support range, will show this message.
  • Page 27: Logo

    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 DDC2B Feature This monitor is equipped with VESA DDC2B capabilities according to the VESA DDC STANDARD. It allows the monitor to inform the host system of its identity and, depending on the level of DDC used, communicate additional information about its display capabilities.
  • Page 28: Chapter 3 Machine Disassembly

    Machine Disassembly This chapter contains step-by-step procedures on how to disassemble the monitor for maintenance. Disassembly Procedure 1. Remove the screws to release base stand and gemel. (Fig 1-3) Fig 1 Fig 2 Chapter 3...
  • Page 29 Fig 3 2. Remove the screws to remove the back cover. (Fig 4) Fig 4...
  • Page 30 3. Remove the screws to remove the shield . (Fig 5) 4. Remove the bezel. (Fig 6) Fig 5 Fig 6...
  • Page 31 5. Remove the screws to remove the panel. (Fig 7-9) Fig 7 Fig 8 Fig 9...
  • Page 32 6. Remove the screw to remove the main board. (Fig 10) 7. Remove the screws to remove the power board. ( Fig 11-12 ) Fig 10 Fig 11...
  • Page 33 Fig 12...
  • Page 34: Chapter 4 Troubleshooting

    Troubleshooting This chapter provides troubleshooting information for the AL1702W: 1. No Power Press power key and look if the picture is normal Please reinsert and make sure the AC of 100-240 is normal Measure U201 Pin 3=5V, U201 Pin 2=3.3V Check if X401 oscillate waveforms are normal Replace X401...
  • Page 35 2. No Picture No picture Measure U201 PIN2=3.3V Check if X401oscillate waveforms are normal Check if the sync signal from computer is output and video cable is connected normally Replace U401,U501 Replace U201 Replace X401 Input the sync signal of computer, or change the cable...
  • Page 36 3. Panel Power Circuit Check CN601 PIN 23-24 should have response from 0V to 5V When we switch the power switch from on to off Replace panel 4. Keypad Board OSD is unstable or not working Is Keypad board connecting normally? Is Button Switch normally? Is Keypad board normally? Check main board...
  • Page 37 5. No Backlight Check C802 (+) =12V Check ON/OFF signal Check IC801 pin12=5V? Check the pin9&10 of IC801 have PWM wave Check the resonant wave of pin6 & pin1 for PT801 Check the output of PT801 Check connecter & lamp Change FB801,Check Q808, Q810...
  • Page 38: Chapter 5 Connector Information

    Chapter 5 Connector Information The following figure shows the connector locations on the monitor:...
  • Page 39: Chapter 6 Fru (Field Replacement Unit) List

    NOTE: To scrap or to return the defective parts, you should follow the local government ordinance or regulations on how to dispose it properly, or follow the rules set by your regional Acer office on how to return it. Chapter 6...
  • Page 40: Exploded Diagram

    Exploded Diagram (Model: AL1702W)
  • Page 41 Part List Above picture show the description of the following component. Item Picture Description Base shield Key board Panel...
  • Page 42 Power Board Main Board...
  • Page 43: Chapter 7 Schematic Diagram

    Schematic Diagram Main Board CN201 CMVCC CMVCC CMVCC BKLT-VBRI DIM# BKLT-EN C_PANEL_INDEX PANEL_ID# Volume# Volume# Mute Mute CONN '07-01-10 change to Elite Panel ID(3.3V PWM) Back light Dimming(3.3V PWM) '06-11-3 Remove R209(470 ohm) CN202 '06-12-29-3 Remove R211,R212(470ohm) CONN ZD202 C209 ZD203 C201 ZD201...
  • Page 44 DSUB_V R302 0R05 1/16W R301 100R 1/16W R303 100R 1/16W R304 R305 C302 C303 ZD302 ZD303 2.2K   1/16W   UDZS5.6B UDZS5.6B 2.2K 1/16W 22pF 22pF 12/29 change CN301 ZD302 ZD303 from NC to insert DDC1_SCL VGA_CON DDC1_SCL DSUB_5V DSUB_V VGA_B- DSUB_H VGA_B+...
  • Page 45 DSUB_5V CMVCC '06-11-24 D402 change CMVCC Value from BAT54 to D401 BAV70 C402 D402 BAT54C(NC) BAV70 1uF 10V Reserve for powerBoard MCU_VCC Q401 CMVCC=3V PMBS3904 MCU_VCC_S R402 C412 1K 1/16W R403 1uF 10V 3.9K   1/16W U402 AZ431AN-AE1 R404 10K 1/16W 2006-11/23 change R413-4, pull high pin from DSUB_VCC ,DVI_VCC to MCU_VCC VCC3...
  • Page 46 1.8AVCC R1.8DVCC Q501 VCC3 MMBT2907AK Q502   R507 FB503 C506 MMBT2907AK 120  C505 0.1uF/16V 22uF/50V DGND VCC3 FB502 120  C503 0.1uF/16V V1/REXT C507 C501 V2/RX1P 0.1uF/16V 0.1uF/16V V3/RX1N V4/RX0P V5/RX0N V6/RXCP V7/RXCN RTD2025L QFN-48 RTD_V RTD_V RTD_H RTD_H DGND ADC_GND RTD_B- RTD_B- RTD_B+...
  • Page 47 LVDS_O[0..9] LVDS_O0 RXO0- LVDS_O1 RXO0+ LVDS_O2 RXO1- LVDS_O3 RXO1+ LVDS_O4 RXO2- LVDS_O5 RXO2+ LVDS_O6 RXOC- LVDS_O7 RXOC+ LVDS_O8 RXO3- LVDS_O9 RXO3+ LVDS_E[0..9] LVDS_E0 RXE0- LVDS_E1 RXE0+ LVDS_E2 RXE1- LVDS_E3 RXE1+ LVDS_E4 RXE2- LVDS_E5 RXE2+ LVDS_E6 RXEC- LVDS_E7 RXEC+ LVDS_E8 RXE3- LVDS_E9 RXE3+ CMVCC...
  • Page 48 Power board BD901 KBP208G C907 R904 100uF/450V   300K 1/4W C938 R932 1500pF/1KV 300K   1/4W L902 7.0mH C905 ZD906 0.1uF RLZ22B C902 C901 0.001uF/250V 0.001uF/250V R933 300K   1/4W IC901 COMP R915 LD7552BPS 100K   1/8W L901 4.0mH C928 0.01uF C903 0.47uF/275V...
  • Page 49 FB801 F801 +12V BEAD 0R05 1/4W R804 Q801   1/8W PMBS3904 Q808 PDTA144WK Q805 PDTC144WK ON/OFF Q804 PMBS3906 C807 C825 0.1uF/25V 0.1uF/25V Q811 PMBS3904 R811 4.7K   1/10W D813 ZD801 LL4148WP RLZ6.8C Q812 PMBS3906 Q810 RK7002 R813 R827   1/10W 1K 1/10W 1% Q806 R853...

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