Acer AT2645 Service Manual
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Acer AT2645 Service Manual

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Acer AT2645 & AT2646
Service Guide
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Summary of Contents for Acer AT2645

  • Page 1 Acer AT2645 & AT2646 Service Guide...
  • Page 2 Service Guide Version and Revision Version Date Revision History TPV Model Name May-15-08 Initial release E268M2NBWAZEN...
  • 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

    Table Of Contents Monitor Features ……………………………………… General Specifications ……………………………………… LCD TV Description ……………………………………… Precautions And Notices ……………………………………… D-SUB PIN Distribution ……………………………………… Chapter 1 Factory Preset Display Modes ……………………………………… LCD TV Panel Specification ……………………………………… Panel Features ……………………………………… General Specifications ……………………………………… Mechanical Specifications ………………………………………...

  • Page 7: Monitor Features

    Chapter 1 Monitor Features General Specifications...

  • Page 9: Lcd Tv Description

    LCD TV Description The LCD TV will contain a main board (include audio), a switching power board, a function keyboard, an IR Board and a side 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 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

    Factory Preset Display Modes: VGA/HDMI Input Signal Reference Chart...

  • Page 12: Lcd Tv Panel Specification

    LCD TV Panel Specification V260B1- L11 is a TFT Liquid Crystal Display module with 5U-CCFL Backlight unit and 1ch-LVDS interface. The display diagonal is 26”. This module supports 1366 x 768 WXGA format and can display 16.2M colors (6-bit+FRC colors). The inverter module for backlight is built-in. Panel Features - Excellent Brightness 500nits - Contrast Ratio (800:1)

  • Page 13: Optical Specifications

    Electrical Characteristics Optical Specifications Test Conditions Optical Specifications...

  • Page 14: Connecting Peripherals

    Chapter 2 Connecting Peripherals Front panel controls...

  • Page 15: Remote Control & Osd Operating Instructions

    Chapter 3 Remote Control & OSD Operating instructions Using the Remote Control 5 e (Empowering Technology) Press to activate Acer Empowering Technology. 6 MENU Press to open or close the Menu. 7 Back Press to back to previous Menu. 8 Directional keys/OK...
  • Page 16 Teletext 1 Color buttons (R/G/Y/B) Operates corresponding button on the teletext page. 2 INDEX Press to go to the index page. 3 SUBTITLE Press to view subtitles on the screen. 4 REVEAL Press to reveal hidden teletext information. 5 SUBPAGE Press to access the teletext’s subpages directly.

  • Page 17: Using The Osd Menus

    Using the OSD Menus...

  • 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: Chapter 4 Machine Disassembly

    Chapter 4 Machine Disassembly This chapter contains step-by-step procedures on how to disassemble the monitor for maintenance. The tools listed as below are that we may use during this procedure: 1. A proper screwdriver 2. A pair of glove 3. A pliers 4.
  • Page 27 3. Remove 2 screws to remove the bkt-vesa. 4. Release the connectors.
  • Page 28 5. Remove the speakers. 6. Remove the main board, power board...
  • Page 29 7. Remove the BKT-PCB-holder and BKT-panel-support. 8. Release the IR board. 9. Remove the bezel.
  • Page 30 10. Remove the 4 screws to release the panel.

  • Page 31: Chapter 5 Trouble Shooting

    Chapter 5 Trouble Shooting No picture (LED orange) No picture Check key board/IR board Change key board/IR board Check 24V power supply Check the power supply circuit Check main board Standby power supply Change U902 Check U401 Change U401 Check I C communication Check I C bus...
  • Page 32 Abnormal display Reset source Check the source Replace the filter or resistance Check signal filter circuit RF signal Check TV system setup Check input Check LVDS cable Replace LVDS cable Check Tuner Check panel Replace panel Replace Tuner No sound Reset source Check the source Check if mute...
  • Page 33 No Power (No LED indicator) Plug in power cord and interface Check power cord and board interface Replace F901 or BD901 or C910 Check F901, BD901, C910 Check D902, C920 Replace D902 or C920 Replace T901 Check T901 Replace D950 or C952 or C953 or C954 Check D950, C952, C953, C954 No display (LED indicator green) Check the source...
  • Page 34 Key Board OSD is unstable or not working Is Key Pad Board connecting normally? Connect Key Pad Board Replace Button Switch Is Button Switch normally? Is Key Pad Board Normally? Replace Key Pad Board Check Main Board...

  • Page 35: Chapter 6 Upgrade Firmware

    Chapter 6 Upgrade Firmware Step 1: Install USB driver to your computer from the ISP board USB Driver file. ISP board USB driver include three files: 1. PL-2303 Driver InstallerV2021.exe 2. ser2pl.sys 3. UTS2pl.sys 4. Install PL-2303 Driver InstallerV2021.exe Push "Next".
  • Page 36 Push "Finish". 5. ser2pl.sys & UTS2pl.sys two files should copy to C:\WINDOWS\system32\drivers & replace original files.
  • Page 37 Step 2: Connect to ISP Board. Use USB port connecting PC & MT537x (or MT5335) Board via ISP board(Code number: 715G537XL2). USB Cable Use Desktop PC or Notebook USB Port Step 3: Update TV. I. Open the MtkTool to Load .bin file (Example: F3_dbg_image.bin) & Set Auto Set Flash BaudRate...
  • Page 39 II. Set COM port resource that used by USB Port. III. Set Baud rate 115200 & High speed item Enable. & MT537x(MT5335).
  • Page 40 IV. Click "Upgrade" button.(Waiting for "Finished!" message.) V. Main board Power Off _ On.

  • Page 41: Chapter 7 White-Balance, Luminance Adjustment

    Chapter 7 White-Balance, Luminance Adjustment Approximately 30 minutes should be allowed for warm up before proceeding white balance adjustment. YPbPr Mode display adjustment White balance adjustment (B) General set-up : Equipment Requirements: Minolta CA-110 or Equivalent Color analyzer Quantum Data Pattern Generator 802G , 802BT or equivalent instrument Input requirements: Input Signal Type: YPbPr signal 1.
  • Page 42 Color temperature Standard/Warm/Cold (x, y) co-ordinates specification: Picture Mode Normal (10000 0.281±0.003 0.288±0.003 Warm (8000 0.295±0.003 0.305±0.003 Cold (13000 0.269±0.003 0.274±0.003 Table: Reading with Minolta CA-110. Note: 1. Use Minolta CA-110 for color coordinates and luminance check. 2. Luminance > 400 cd/m in the center of the screen when Brightness control at 100;...

  • Page 43: Fru (Field Replaceable Unit) List

    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. 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 44: Exploded Diagram

    Exploded Diagram (Model: AT2645 & AT2646)

  • Page 45: Edid Data

    EDID Data DDC DATA for For D-SUB Input EDID data (128 bytes) **********************************************************************...

  • Page 46: Chapter 9 Pcb Layout

    Chapter 9 PCB Layout Main Board Layout...
  • Page 47 Power Board...
  • Page 48 Key Board...

  • Page 49: Chapter 10 Schematic Diagram

    L : W P D ISAB L E ZD128 ZD129 T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL AT2645 Size 絬 隔 瓜 絪 腹 T2848-H-X-X-2-032408 TPV MODEL TV2668W-AED Key Component VGA IN/L/R PCB NAME 715T2848-H 称爹...
  • Page 50 100 OHM 1/10W 100pF VPORT0603100KV05 JACK T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL AT2645 Size 絬 隔 瓜 絪 腹 T2848-H-X-X-2-032408 TPV MODEL TV2668W-AED Key Component YPbPR/L/R & SPDIF PCB NAME 715T2848-H 称爹...
  • Page 51 R174 GND_CVBS C168 1uF/16V 0 OHM 1/10W T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL AT2645 Size 絬 隔 瓜 絪 腹 T2848-H-X-X-2-032408 TPV MODEL TV2668W-AED Key Component S-v ideo/CVBS/L/R PCB NAME 715T2848-H 称爹...
  • Page 52 Audio In 1V ZD110 R161 RLZ13B 10K OHM 1/10W T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL AT2645 Size 絬 隔 瓜 絪 腹 T2848-H-X-X-2-032408 TPV MODEL TV2668W-AED Key Component SCART connector PCB NAME 715T2848-H 称爹...
  • Page 53 LO = > LVDS POWER OFF R307 1uF6.3V 1M OHM 1/10W T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL AT2645 Size 絬 隔 瓜 絪 腹 T2848-H-X-X-2-032408 TPV MODEL TV2668W-AED Key Component LVDS OUT PCB NAME 715T2848-H 称爹...
  • Page 54 C518 C519 C520 1uF/16V 4.7uF/10V 0.1UF16V T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL AT2645 Size 絬 隔 瓜 絪 腹 T2848-H-X-X-2-032408 TPV MODEL TV2668W-AED Key Component MT5335 HDMI/PLL PCB NAME 715T2848-H 称爹 <称爹>...
  • Page 55 C499 1uF/16V 0.1UF16V +3V3SB_uP 1uF/16V 0.1UF16V T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL AT2645 Size 絬 隔 瓜 絪 腹 T2848-H-X-X-2-032408 TPV MODEL TV2668W-AED Key Component MT5335 Control/IR/LED/Key PCB NAME 715T2848-H 称爹 <称爹>...
  • Page 56 1uF/16V 0.1UF16V 4.7uF/10V 0.1UF16V AVSS33_ADAC0 T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL AT2645 Size 絬 隔 瓜 絪 腹 T2848-H-X-X-2-032408 TPV MODEL TV2668W-AED Key Component MT5335 Audio In/Out PCB NAME 715T2848-H 称爹 <称爹>...
  • Page 57 C948 C949 C950 0.1UF16V 1uF/16V 0.1UF16V T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL AT2645 Size 絬 隔 瓜 絪 腹 T2848-H-X-X-2-032408 TPV MODEL TV2668W-AED Key Component DDR1 MEMORY PCB NAME 715T2848-H 称爹 <称爹>...
  • Page 58 R418 R419 10K OHM 1/10W 10K OHM 1/10W 10K OHM 1/10W Debug Only +3V3SB 33A800920A +3V3SB R457 10K OHM 1/10W ACER 26" TV Code Updated OIRI_MT5335 R485 NC/0 OHM 1/10W OIRI OIRI 9,13 R414 R415 +5VSB CN405 4.7K OHM 1/10W 4.7K OHM 1/10W...
  • Page 59 For ACER NC +3V3SB_uP D402 NC/UDZSNP5.6B DV33 R472 NC/27K OHM 1/10W Q401 NC/2N7002 SOT-23 CEC_IRQ R409 9,14 OSCL0 9,19 NC/100 OHM 1/10W DV33 ZD401 +3V3SB_uP NC/UDZSNP5.6B FB402 Q402 NC/2N7002 SOT-23 NC/BEAD OSDA0 9,19 C404 C403 NC/0.1UF16V NC/10uF/16V C402 +3V3SB_uP CN402 +3V3SB_uP 0.1UF16V...
  • Page 60 HPDIN2 T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL AT2645 Size Custom Preliminary Schematics - Advance Information Subject to change without notice - Sept. 14, 2006 絬 隔 瓜 絪 腹 T2848-H-X-X-2-032408 TPV MODEL...
  • Page 61 R536 3.6K OHM 1/10W 120 OHM 1/10W T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL AT2645 Size 絬 隔 瓜 絪 腹 T2848-H-X-X-2-032408 TPV MODEL TV2668W-AED Key Component TMDS251 HDMI 2:1 Switch PCB NAME 715T2848-H 称爹...
  • Page 62 R629 DV33 CN601 R630 10K OHM 1/10W HPDET# R601 HPDET# 0 OHM 1/10W 47K OHM 1/10W FB607 300 OHM For ACER C623 EarMuteB EarMuteB FB608 300 OHM C625 R632 R633 HP-L R634 C626 220uF/10V OP_PWRH 36K OHM 1% 1/10W 0 OHM 1/10W...
  • Page 63 7.5K OHM 1/10W 330pF C663 C664 VSSD/HW VSSD/HW R606 4.7K OHM 1/10W C612 1uF/25V 0.1uF 0.1uF TDA8932BTW D606 R685 For ACER 26" TV AMP_SHUT R626 0 OHM 1/10W LINE_MUTE 1K OHM 1/10W AMP_POWER AMP_12V +24V LL4148 FB603 D605 R612 VOL_MUTE...
  • Page 64 R776 75 OHM for NXP Tuner NC/NXP FQD1116ME T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL AT2645 Size 絬 隔 瓜 絪 腹 T2848-H-X-X-2-032408 TPV MODEL TV2668W-AED Key Component EU Tuner Interf ace PCB NAME 715T2848-H 称爹...
  • Page 65 TS0INVALID TS0INVALID TS0INCLK TS0INCLK TS FROM MT5133 T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL AT2645 Size 絬 隔 瓜 絪 腹 T2848-H-X-X-2-032408 TPV MODEL TV2668W-AED Key Component MT5133 ASIC PCB NAME 715T2848-H 称爹...
  • Page 66 CI_OUTCLK VS2# R703 CI_INCLK 100 OHM 1/10W T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL AT2645 Size 絬 隔 瓜 絪 腹 T2848-H-X-X-2-032408 TPV MODEL TV2668W-AED Key Component MT8295/CI CARD PCB NAME 715T2848-H 称爹...
  • Page 67 For OTS CN901 For 26" TV ACER:R909,R912,R923 10K ohm ; FB903 R922,R906 NC DV33 AME8810AEGTZ Philips:R909,R912,R923 NC ; 600mA/3.3V R7905 CN902 CN901 R922,R906 10K ohm 220 OHM 1K OHM 1/10W R7904 Dimming +5VSB U902 +3V3SB_uP +3V3SB Q908 PS_ON AME8810-AEGTZ 0.6A/3.3V...
  • Page 68 Power board B+_390V T901 ZD932 POWER X'FMR C930 R930 80TL26T 7 L FB901 FB903 D902 2200pF FMXA-1106S 100KOHM +-5% 1WS R950 R951 47 OHM 1/4W 47 OHM 1/4W B+_390V BEAD BEAD R952 R953 C950 L906 C919 D930 47 OHM 1/4W 47 OHM 1/4W 1000pF 1000pF...
  • Page 69 Key board NOTE Pull up R = 3.9K ohm to 3.3V SOURCE MENU VOL- VOL+ KEY1 1.04V 0.35V 2.44V 1.73V C001 0.1uF/25V SW001 SW002 SW003 SW004 R001 R002 R003 R004 4.3K OHM 1% 1/10W 1.8K OHM 1% 1/10W 470 OHM 1% 1/10W 11KOHM1/10W CN001 POWER...
  • Page 70 C103 C104 Lock Type 10uF/10V 0.1uF T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL AT2645 Size 絬 隔 瓜 絪 腹 T2992-A-X-X-1-080325 TPV MODEL TV2668W-AED Key Component MT5335 IR/LED PCB NAME 715T2992-A 称爹 <称爹>...

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