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Acer AT2701W Service Manual

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Acer
AT2701W
Service Guide
1

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Summary of Contents for Acer AT2701W

  • Page 1 Acer AT2701W Service Guide...
  • Page 2 Service Guide Version and Revision Version Release Date Revision Aug-02-2005 Original release...
  • Page 3 "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.
  • 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

    Table Of Contents ……………………………………… Chapter 1 Monitor Features ……………………………………… General specifications ……………………………………… LCD TV description ……………………………………… Interface Connector ……………………………………… Precautions and notices ……………………………………… D-SUB PIN distribution ……………………………………… Factory Preset Display Modes ……………………………………… LCD TV Panel Specification ……………………………………… Panel Features ……………………………………… General specifications ………………………………………...

  • Page 7: Monitor Features

    Chapter 1 Monitor Features GENERAL SPECIFICATIONS Items Specification 27” TFT-LCD LCD Panel Screen Size Aspect Ratio 16: 9 Resolution 1366 x 768 pixels PAL B/G, D/K, I and SECAM L/L’ (Multi-Europe) TV Function TV Tuning System Full Channel with Electronic PLL Tuner Sound System Nicam / A2 Teletext...

  • Page 8: Lcd Tv Description

    LCD TV DESCRIPTION The LCD TV will contain a main board (include audio), a switching power board (include an inverter board), an IR board, a function keyboard, a DPF Board and an Ear phone board. The main board and power board will house the flat panel to control logic I2C bus, DDC, brightness control logic for LCD panel, DC-DC conversion to supply the appropriate power to the whole board and transmitting TTL level signals into LCD Module to drive the LCD display circuit.
  • Page 9 1-2 OPERATING PRECAUTION (1) Please be sure to unplug the power cord before remove the back-cover. (be sure the power is turn-off) (2) Please do not change variable resistance settings in MAIN-BOARD; they are adjusted to the most suitable value. If they are changed, it might happen LUMINANCE does not satisfy the white balance spec.

  • Page 10: D-Sub Pin Distribution

    D-SUB PIN DISTRIBUTION This procedure gives you instructions for installing and using the LCD TV display. (1) Position the display on the desired operation and plug the power cord into a convenient AC outlet.Three-wire power cord must be shielded and is provided as a safety precaution as it connects the chassis and cabinet to the electrical conduct ground.

  • Page 11: Factory Preset Display Modes

    (5) With proper signals feed to the display, a pattern or data should appear on the screen, adjust the brightness and contrast to the most pleasing display, or press auto-adju to get the best picture-quality. (6) This TV (with PC function) has power saving function following the VESA DPMS. Be sure to connect the signal cable to the PC.

  • Page 12: Lcd Tv Panel Specification

    LCD TV Panel Specification PANEL FEATURES - Excellent brightness (550 nits) - Ultra high contrast ratio (1000:1) - Fast response time (8ms) - High color saturation NTSC 75% - WXGA (1366 x 768 pixels) resolution - DE (Data Enable) only mode - LVDS (Low Voltage Differential Signaling) interface - Optimized response time for both 50/60 Hz frame rate - Ultra wide viewing angle: 176(H)/176(V) (CR>20) Super MVA technology...

  • Page 13: Optical Specifications

    Optical Specifications...

  • Page 14: Connecting Peripherals

    Chapter 2 Connecting Peripherals Front panel controls Power Key： Press to turn the LCD TV on or off. MENU Key： Press to show and exit the OSD menu. Down / Up Key：Press to perform function and channel selection. - / + Key： Press to adjust the volume level, or confirm function selection. Input Key：Press to select your input source.
  • Page 15 There is a wide range of devices that can be connected to your LCD TV. Please refer to the section below: Preparation Remove the back plate of the TV as shown above.If you lay your LCD TV flat on a table, with the screen facing down, it will be easier to connect your peripheral equipment.
  • Page 16 Headphone 1、 When you attach headphones, the speakers built into your TV set will be disabled. You can use the VOL controls on the TV set or remote control to adjust the volume level. 2、 Press the key on the remote control to switch off the sound from the headphone. How to connect PC input 1.

  • Page 17: Control & Osd Operating

    Remote Control & OSD Operating instructions Chapter 3 Using the Remote Control...
  • Page 20 TELETEXT Teletext is a text-based information service provided by some TV stations, in addition to traditional TV broadcasts.

  • Page 21: Using The Osd Menus

    USing the OSD Menus 1. Press the MENU button repeatedly to access the onscreen display menus. 2. Use the up and down cursor keys to select an item or adjust the settings of a menu item. 3. Use the left and right cursor keys to enter a submenu or activate a function. 4.
  • Page 22 AUDIO Adjust 1. VOLUME is adjusted from 0 to 100. 2. BASS and TREBLE are adjusted from 0 to 100.You can adjust Volume, Bass and Treble to the levels you prefer. When adjusting any item in a submenu, the OSD will display the above. 3.
  • Page 23 4. Use INSERT to insert the current program into selected position. SETUP 1. Use the BLUE SCREEN option to decide if you want to display a blank screen or a blue screen when there is no video input. Pre-set is ON. 2.
  • Page 24 2. CONTRAST, BRIGHTNESS, FOCUS, CLOCK, H-POSITION, V-POSITION and COLOR TEMP allow you to set the picture for maximum viewing comfort. COLOR TEMP Using the COLOR TEMP function, you can select the display warmth and color depth. 1. Select PIP to turn the PIP feature on or off. 2.

  • Page 25: 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 26: Machine Disassembly

    Chapter 4 Machine Disassembly This chapter contains step-by-step procedures on how to assemble the monitor for maintenance. Disassembly Procedure Disassemble the base 1. put the monitor on a clean soft cloth with panel facing to the table. (Fig 1) ( Fig 1 ) 2.
  • Page 27 Disassemble the back covers 1. Remove ten screws to release back cover. (Fig 3-4) ( Fig 3 ) ( Fig 4 ) . Remove two screws to release key board cover. (Fig 5 - 6) ( Fig 5 )
  • Page 28 ( Fig 6 ) 3. Remove two screws in the keyboard, which is marked with red. (Fig 7) ( Fig 7 ) Disassemble the shield 1. Remove six screws to release the shield. The screws is marked with red.(Fig 8) Fig8...
  • Page 29 2. Remove the shield as below. (Fig 9) ( Fig 9 ) Disassemble the speaker 1. Remove six screws to release speaker. (Fig 10-11) Fig 10 (Fig 11)
  • Page 30 Disassemble the main board 1. Remove eight screws to release main board. (Fig 12) 2. Remove connector wire with main board and panel. (Fig 13) ( Fig 12 ) ( Fig 13 )
  • Page 31 Disassemble the power board 1. Remove six screws to release power board. (Fig 14) 2.Remove connector wire with power board and panel. (Fig 15) 3. Remove back cover (Fig 16-17) Fig 14 Fig 15...
  • Page 32 Fig 16 Fig (17) Disassemble the panel 1. Remove four screws (right and left) to release metal frame. (Fig 18) Fig (18) 2, The panel is disassembled absolutely.

  • Page 33: Software Flow Chart

    Chapter 5 Software Flow Chart...

  • Page 36: Trouble Shooting

    Chapter 6 Trouble shooting Panel Control Circuit No Display Check CN800 pin 2－6 Replace panel or FPC is 5V and signal on pin 9，10， cable to panel 12，13，15，16，18，19，21， Check U800 Output to CN800 relative circuit Replace L803, C807 and CN800 VCC at Q300, Q301, L803 (5V) Replace X300 Check U300 crystal...
  • Page 37 Main Board Power Circuit No Power Check CN102 Check Power Board 1,2(12V), circuit Pin 3,4 (5V) Check U701 input (5V), Check Q702, Q703 and U704 input (12V) PWR_ON control relative circuit U704 Pin2 U703 Pin2 U700/U701/U702 U101 Pin2 (8V) (2.5V) Pin2 (2.5V) (5V)
  • Page 38 Remote Control Block Remote Control can’t work Check IR Board CN1 Pin 1,4(5V) and voltage at Pin 3 Replace D600 or IR board will change when received signal Replace line between Main Check Main board board and IR Board or power relative circuit and replace U300 signal on R321...
  • Page 39 Key Board Control Block Press key no function Check CN1 Pin 7 voltage Replace keyboard will change when key be pressed Check line between keyboard and main board or R120(3.3V) Check Power (3.3v) relative circuit...
  • Page 40 PC Control Block No Screen Check U300 output Check CN800, relative circuit cable and panel panel control circuit Check U300 crystal Replace X300 X300 (12MHZ) Check power supply Check relative circuit for 2.5V, 3.3V Check CN501 Pin1,2,3 Check U501 output (R,G,B) relative circuit Pin13,14(HS,VS)
  • Page 41 Audio Control Block No Sound Check CN111, CN112 Check U602 Output to CN111, CN112 relative circuit and L100, L101, L102, L103 Check U602 output relative circuit and VCC at pin 25，26，29，30，33 (12V) Check CN600 Pin3-4 and Check ear-phone Pin1-2 are short when no board ear-phone plug Check...

  • Page 42: White-Banance,Luminance Adjustment

    Chapter 7 White-Banance,Luminance adjustment Approximately 30 minutes should be allowed for warm up before proceeding white balance adjustment. Before started adjust white balance ,please setting the Chroma-7120 MEM. Channel 1 to 9300 color, MEM. channel 2 to 6500 color, and MEM. channel 3 to 11000 color, ( our 9300 parameter is x = 283 ± 15, y = 297 ±...
  • Page 43 Bias (Low luminance) adjustment : 1. Press “ AUTO” button , 2. Set the contrast on OSD window to the value=80 , color (user )R,G,B set to “50” 3. adjust the brightness on OSD until chroma 7120 measurement reach the value Y>350 cd/m20 III, Gain adjustment :...
  • Page 44 3. Switch the MEM.channel to Channel 03 ( with up or down arrow on chroma-7120 ) 4. The lcd-indicator on chroma-7120 will show x = 280 ± 15, y = 275 ± 15, Y = 370 ± 7 cd/m2 5. Adjust the Color(user)Mode: RED on OSD window, until chroma 7120 indicator reached the value R=100 6.

  • Page 45: Fru ( Field Replaceable Unit ) List

    DIFFERENT part number code from those given in the FRU list of this printed Service Guide. You MUST use the local FRU list provided by your regional Acer office to order FRU parts for repair and service of customer machines.

  • Page 46: Exploded Diagram

    Exploded Diagram (Model: AT2701W) Index Part Name Part No. Index Part Name Part No. Bezel 34L1301 Power BKT 15L5908 PMMA 34T1406 Connector BKT 15L8019 Lens Remote 33L4658 Screw Q1L930-6128 Lens Power 33L4659 Rear Cover 34T1302-5 Remote Board IRP760A1 Keyboard KEPFA60KA1...

  • Page 47: Edid Data

    EDID Data...

  • Page 48: Pcb Layout

    Chapter 9 PCB Layout Main Board Layout...
  • Page 49 CN501 88T 35315F HA D-SU13 15PIN U200 56V 640 1 VPC3230D U201 56V 634 2 PI5V330Q QSOP-16 U310 56T1133 52AC0 EUR-ACER-CM27-050624N-V U300 56V 562 87 SPV302A U301 56V 652 1 PCA9554PW TSSOP-16 PHIL U302 56V 615 8B IS42S16400B-7T TSOPII-5 U304...
  • Page 50 adapter board...

  • Page 51: Schematic Diagram

    Chapter 10 Schematic Diagram Main board 3 0 0 O H M L 1 0 0 C 1 1 5 4 7 0 p F Au d io _ L + C N 1 1 1 C N 1 0 7 C O N N 6 0 0 O H M Au d io _ L -...
  • Page 52 R 2 0 1 0 £ [ 1 /1 6 W VD _ VS 1 ,6 R 2 0 2 0 £ [ 1 /1 6 W VD _ H S 1 ,6 ,1 4 R 2 0 3 0 £ [ 1 /1 6 W VD _ VR EF R 2 0 4 0 £...
  • Page 53 3 .3 VM J 3 0 0 H EAD ER 2 U 3 0 2 MD 0 R 3 7 5 2 2 £ [ 1 /1 6 W MD R 0 U 3 0 0 B SPV3 0 1 A MD 1 R 3 7 6 2 2 £...
  • Page 54 R363 100K£[ 1/16W U300A R367 100K£[ 1/16W C390 C389 C388 C387 CLK_ADC 22pF 22pF 22pF 22pF AD_CLK CLKA HS_ADC U300C AD_HS CLAMP AD_Clamp L312 VS_ADC SPV301A AD_VS 0 OHM CVS_COAST R301 R364 100K£[ 1/16W U300E SPV301A 100£[ 1/16W PCK1 P_CLK AD_SOG PCHS_SOG CLK1...
  • Page 55 3 .3 VM 3 .3 VM C 3 0 1 0 .1 u F U2.AA23 C 3 0 2 0 .1 u F U2.D14 U2.AC9 U2.M4 C 3 0 3 0 .1 u F C 3 0 4 0 .1 u F C 3 0 5 0 .1 u F C 3 0 6 0 .1 u F...
  • Page 56 C 5 0 1 0 .1 u F 3 .3 V_ AP R 5 0 1 R 5 0 2 AG N D 2 .7 K£ [ 1 /1 6 W 2 2 £ [ 1 /1 6 W VG A_ VS 5 VP C 5 0 3 C 5 0 0...
  • Page 57 C N 6 0 1 PC _ L C N 6 0 0 L 6 0 1 6 0 0 O H M L P6 0 0 6 0 0 O H M( 8 P4 R ) PC _ R L 6 0 0 6 0 0 O H M EAR _ R PR E_ R...
  • Page 58 +5 VP L 7 0 1 AG N D 5 VP 5VP : From Power Supply 5V L 7 0 2 12VP : From Power Supply12V U 7 0 1 3 .3 VS 6 0 0 O H M 8V :FOR MSP3455G/M62438/uPD64038 C 7 2 5 0 .1 u F 5V : For Tuner/VPC3230D/MSP3455G/...
  • Page 59 3 .3 VM For CMO 32" 50 Hz = Hi L 8 0 2 60 Hz = Lo 6 0 0 O H M L 8 0 0 6 0 0 O H M 3 .3 VM O D SEL L 8 0 1 6 0 0 O H M R 8 1 5...
  • Page 60 3 V3 6 0 0 O H M 1 0 K£ [ 1 /1 6 W R 3 4 .7 K£ [ 1 /1 6 W 5 V1 1 0 K£ [ 1 /1 6 W R 4 4 .7 K£ [ 1 /1 6 W 6 0 0 O H M R 5 4 .7 K£...
  • Page 61 key board G nd-case 1K£[ 1/16W 1.5K £[ 1/16W 1.8K £[ 1/16W 2.2K £[ 1/16W 3.6K £[ 1/16W 4.7K £[ 1/16W 600 O HM 0.1uF MENU CH_Down CH_Up PO WE R VO L_Down VO L_Up MO DE_Sel 100£[ CO NN 600 O HM 0.1uF 300£[...
  • Page 62 Adapter Board C 970 0. 0022uF/ 250V C 915 0. 0022uF/ 250V P 1- 1 D 901 ML35 P 2- 1 L951 R J905 FOR BACKLIGHT 24V/5A C N 951 L906 D 902 N R 901 N R 902 B E A D T951 L952 8m£[...
  • Page 63 Q 8 0 1 L 8 0 1 AO 4 4 1 1 2 2 u H C 8 0 2 R 8 0 4 1 u F/2 5 V D 8 0 1 D 8 0 2 2 2 £ [ 1 /4 W C 8 0 6 C 8 0 7 C 8 0 8...

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