Tatung V32FLBB Service Manual
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Tatung V32FLBB Service Manual

Tatung V32FLBB Service Manual

32” lcd-tv, ntsc system
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32" LCD-TV
Service Manual
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April 12,2005
Version 1.0

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Summary of Contents for Tatung V32FLBB

  • Page 1 32” LCD-TV Service Manual April 12,2005 Version 1.0...

  • Page 2: Table Of Contents

    Table of Contents 1. Safety and Precautions ……………………………………………1 2. Specifications..........…………………………3 3. Connection & Applications………..........….5 4. Controls Location …..........……….…….7 5. Remote Control............………………..8 6. Disassembly Instructions.....……………….……….…..10 7. Block Diagram......……………………………………..14 8. Troubleshooting………….......…………………….15 9. Factory Mode Setting ……………………………………………..20 10. Electronic Circuit Description...…………………..…………21 11. Circuit Diagram......…………………………..…….24 12.

  • Page 3: Safety And Precautions

    1. Safety and Precautions 1.1 Safety Precautions : 1) Cleaning : Unplug the power cord from the AC outlet before cleaning the product. Use a damp cloth to clean the product. Do not use liquid cleaners or aerosol cleaners. 2) Heat sources : Keep the product away from heat sources such as radiators, heaters, stoves and other heat-generating products (including amplifiers).
  • Page 4 5) An outside antenna system should not be located in the vicinity of overhead power lines or other electric light or power circuits, or where it can fall into such power lines or circuits. When installing an outside antenna system, extreme care should be taken to keep from touching such power lines or circuits as contact with them might be fatal.

  • Page 5: Specifications

    2. Specifications 2.1 Specification : ITEMS SPECIFICATION Model Name V32FLBB V32FCBB V32FMBB Screen size/ Supplier 31.51” / LG panel 31.51” / CPT panel 32.02”/ CMO panel Aspect Ratio 16：9 16：9 16：9 Resolution 1366 x 768 (WXGA) 1366 x 768 (WXGA)
  • Page 6 2.2 PC Input preset timing table H.Freq Pixel Hor. Ver. Mode Mode (KHZ) H.Polarity Hor. Hor. H.Back Ver. Ver. V.Back Sync. Sync Resolution V.Freq V.Polarity Total Display Porch Total Display Porch (MHZ) Width Width (Hz) VGA 70HZ 31.469 25.175 640*350 70.087 VGA 60HZ 31.469...

  • Page 7: Connection & Applications

    3. Connection & Applications 3.1 DVI port for HDCP Input D-sub port for PC Input 3.2 DVI port for PC Input D-sub port for Video Input - 5 -...
  • Page 8 3.3 Video Expand card Connection Subwoofer A/V Out Audio O/P : The level of audio output cannot be changed by using the Volume, Treble, and Bass controls on your TV. These connectors should be used with an external amplifier that can be used to control the volume. Video O/P : The main display must set to TV mode in order to use video out to record a program using a VCR.

  • Page 9: Controls Location

    4. Control Location Rear Side : Before operating the LCD-TV or remote control, users must press MAIN POWER switch to ON. The MAIN POWER switch is located at the bottom-left back of the LCD-TV. Front Side : - 7 -...

  • Page 10: Remote Control

    5. Remote Control 5.1 Remote Control : VIDEO SWAP - 8 -...
  • Page 11 5.2 Summary of Control Button POWER button Turn the TV on or off Selecting the primary signal source TV button Switch to TV mode AV button Switch to AV mode (composite mode) SV button Switch to S-Video mode CV button Switch to CV mode (component :Y/Pb/Pr) PC button Switch to PC mode (DVI or D-sub)

  • Page 12: Disassembly Instructions

    6. Disassembly Instructions Face down the LCD-TV on a smooth plane with a soft material to protect the panel faceplate. A. Pull down two hooks to open the bottom cover. B. Pull down two hooks to open the side cover. C.
  • Page 13 E. Remove 10 screws from the back cover. F. Remove 1 screw from the back cover, and then take back cover apart from the LCD G. Remove 4 screws from the VESA wall-mounting bracket. H. Remove the shield of power box. H.’...
  • Page 14 I. Remove 8 screws from the Main board, and then take Main board apart from the Panel bracket. J. Remove 6 screws from the Panel Bracket. - 12-...
  • Page 15 K. Take Panel Bracket apart from the Front Cover. - 13 –...

  • Page 17: Troubleshooting

    8. Troubleshooting 8.1 Symptom Codes ( for Call Center use ) CODE SYMPTOM COUNTERMEASURES No Picture and No Sound Make sure the Power cord and Antenna cable are in TV mode. properly connected . Make sure the batteries in remote control are not flat.
  • Page 18 CODE SYMPTOM COUNTERMEASURES Stripe noise. Check the coaxial cable connected with the TV is not oxidized Do not use 300 ohm twin lead cables as interference may occur It is recommended to use a 75 ohm coaxial cable (not supplied) to get premium quality picture. Keep the aerial cable away from other connecting cables.
  • Page 19 -16- CODE SYMPTOM COUNTERMEASURES Remote Control does not Make sure the batteries in remote control are not flat work Check the polarity of the batteries Use the remote control in the front of the TV or from less than seven meters away. make sure the Remote Sensor Window is not under strong lighting.
  • Page 20 8.2 Flow Chart ( for Repair Center use ) (1) Power fair : No picture Appears Replace I12 0~0.5V Check if sources are plug connected correctly. 否 Does the LED Is the Voltage at Check Picture 否 appear light up？ I12 #8 = 5V？...
  • Page 21 (2) Picture Abnormal: Picture Abnormal Is the panel cable Re-plug the P015A Clear EEPROM, and Check if SMT devices panel cables, connected with around I16 &I43 are and check the then check if the P15 correctly? welded correctly. picture. picture is normal. Re-welding, Replace V901 and then check...

  • Page 22: Factory Mode Setting

    9. Factory Mode Setting * The steps to enter Factory Mode are identical to the steps of firmware version check in Chapter 16 . 9.1 Procedures to enter Factory Mode: 1) Press Power Button to turn on the LCD-TV. (Power Indicator: Green color) 2) Press Ch ▽...

  • Page 23: Electronic Circuit Description

    10. Electronic Circuit Description 10.1 Main Board (PWB-0713) (1) Power supply: Refer to circuit diagrams sheet 15 of PWB-0713, and Power Module (PB01).. Power Module (PB01) provides 24V、 12V、5V to Main Board via wire P016A and connector P16 #1~2(Blue wires)、#3~4(Yellow wires)、#5~7(Red wires). The Backlight control signal from I16#W10 (Scalar: PW218) is applied to Inverter through P16# 11 (Green wire) on Main Board, CN2#11 and CN3#2 (Blue) on Power Module.
  • Page 24 (4) MCU (Micro Controller) : Refer to circuit diagrams sheet 13 and 11 of PWB-0713. The microcontroller I34 (MX29LV800 or AM29LV800) is a flash type processor without extra crystal for clock. The address signal A1~A19 of I34 (# 25~18、8~1、48、17and 16) are connected to A1~A19 of I16 (Scalar : PW218), and data signal D0~D15 are also connect to D0~D15 of I16 (Scalar : PW218).
  • Page 25 10.3 Inverter Board The Power Module provides +24V through CN3 #3~7 (Red wire) and offers 3.5A (typical) to both Inverters on LCD panel. The brightness adjustment in OSD menu is to control the voltage at P16#11 while this voltage is offered by Q40, which inverts the state of I16 #w10.

  • Page 26: Circuit Diagram

    11. Circuit Diagram 11.1 Main Board (PWB-0713) - 24 -...
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  • Page 43 11.2 Tuner & I/O Board (PWB-0733) : - 41 -...
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  • Page 45 11.3 Interface、Key、IR Board (PWB-0768) : - 43 -...
  • Page 46 Top View AC IN Connector 24V (Blue) 12V (Yellow) 1.Inverter ON/OFF (White) (Red) 2.Backlight Control (Blue) 8~10 GND (Black) (Red) Backlight Control (G.) 8~12 GND (Black) 12~13. 24V、12V ON/OFF(W.)

  • Page 47: Pcb Layout

    12. PCB Layout 12.1 Main PCB (PWB-0713) : Front Side - 45...
  • Page 48 Rear side - 46 -...
  • Page 49 12.2 Tuner PCB & I/O PCB (PWB-0733) : Front Side Rear side - 47-...
  • Page 50 12.3 Interface、Key、IR PCB (PWB-0768) : Front Side Rear side - 48 –...

  • Page 51: Electrical Spare Parts List

    13. Electrical Spare Parts List Model Name : : V32FLBB-U21 (Set) / M21(SKD) with LG - Panel V32FCBB-U21 (Set) / M21(SKD) with CPT-Panel V32FLBB-U21 V32FLBB-M21 (5934132007) (5934132008) No. Name Description V32FCBB-U21 V32FCBB-M21 (5934132003) (5934132005) 5097636002 5097636002 PWB-0713 Main Board with MCU (assembly)
  • Page 52 V32FLBB-U21 V32FLBB-M21 (5934132007) (5934132008) No. Name Description V32FCBB-U21 V32FCBB-M21 (5934132003) (5934132005) Wire Ass'y W/13P Conn. P016A 5057413007 5057413007 * Power module Main board Wire Ass'y W4P / 2P Conn. : PJ003A * Main board (4P) 5057404397 5057404397 Speaker connectors (2P) R and L Wire Ass'y W/2P Conn.

  • Page 54: Mechanical Spare Parts List

    1P24 EPS BLOCK R/T V32 9523440456 1P21 EPS BLOCK L/B V32 9523440156 1P22 EPS BLOCK R/B V32 9523440256 1P25 EPS BLOCK M/T V32 9523440556 1P26 EPS PAD-B 9523440656 1P73 PE BAG 9533310156 1P11 RS CARTON V32FLBB 9513440356 - 52 -...

  • Page 55: Firmware Update Procedure

    Step1 : Install Programs 1) Save on the desk-top of a PC with Window 98/XP/NT/2000 (first time). FlashUpgrader.exe 2) Unzip the folder of updated programs, e.g.V32FLBB-U21-MP-1.0-0214.zip, to Bin Folder. Step2 : Update the firmware 1) Connect Power Cord to the LCD-TV.
  • Page 56 6 ) When the screen appears following window, select appcode, and then click 開啟(o) . 7) Click Flash button, and then the window will appear Waiting for target reset. √ -54 -...
  • Page 57 8) Turn the Main Power Switch to ON, and the file will automatically download. √ 9) When the message of completion or 100% appears, turn the Main Power Switch to OFF and then to ON . Step 3 : Initial EEPROM 1) Press Power Button to turn on the LCD-TV.

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