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  5. Service Manual

Daewoo DLA-32H1 Service Manual - Contents

Summary of DLA-32H1

  • Page 1

    Daewoo modelo: dla-32h1 chassis ： mt5380 product type: televisión de 32” lcd ver 1.0 hisense electric co. ，ltd. Apr. 2008.

  • Page 2: Contents

    - 2 - lcd tv service manual hisense confidential contents contents.......................................................................................................................................................................- 2 - service manual .................................................

  • Page 3: Service Manual

    - 3 - lcd tv service manual hisense confidential service manual 1. Precautions and notices before servicing the lcd tv, read the safety precautions in this manual. When replacement parts are required, be sure to use replacement parts specified by the manufacturer. Proper service and repair is import...

  • Page 4: 1.1 Warning

    - 4 - lcd tv service manual hisense confidential trade of all conceivable ways in which service might be done or of the possible hazardous consequences of each way. Consequently, hisense has not undertaken any such broad evaluation. Accordingly, a serviceman that uses a service procedure or tools, w...

  • Page 5

    - 5 - lcd tv service manual hisense confidential 1.1.2. All ics and many other semiconductors are susceptible to electrostatic discharges (esd). Careless handling during repair can reduce life drastically. When repairing, make sure that you are connected with the same potential as the mass of the se...

  • Page 6

    - 6 - lcd tv service manual hisense confidential clamps. -the insulation of the mains lead should be checked for external damage. 1.1.6 (1) do not touch signal and power connector while this product operates. Do not touch emi ground part and heat sink of film filter. (2) do not supply a voltage high...

  • Page 7: 1.2 Notes

    - 7 - lcd tv service manual hisense confidential (7) do not pull out or insert the power cable from/to an outlet with wet hands. It may cause electric shock. (8) do not damage or modify the power cable. It may cause fire or electric shock. (9) if the power cable is damaged, or if the connector is lo...

  • Page 8

    - 8 - lcd tv service manual hisense confidential seconds after the main power has been turned off. Especially when installing and removing the power board, start servicing at least 2 minutes after the main power has been turned off. • while the main power is on, do not touch any parts or circuits ot...

  • Page 9

    - 9 - lcd tv service manual hisense confidential short-circuits due to residual electric charge. • routing of the wires and fixing them in position must be done in accordance with the original routing and fixing configuration when servicing is completed. All the wires are routed far away from the ar...

  • Page 10: 2.1 Product Function

    - 10 - lcd tv service manual hisense confidential 2. Product function specifications 2.1 product function front cabinet back cabinet.

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    - 11 - lcd tv service manual hisense confidential.

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    - 12 - lcd tv service manual hisense confidential.

  • Page 13: 2.2 Specifications

    - 13 - lcd tv service manual hisense confidential 2.2 specifications.

  • Page 14: 3. Lcd Panel Spec

    - 14 - lcd tv service manual hisense confidential note: specifications and design are subject to possible modifications without notice due to improvements 。 3. Lcd panel spec 3.1 general description ax080d002f is a 31.5” tft liquid crystal display module with 16-eefl backlight unit and a single lvds...

  • Page 15: 3.2 General Features

    - 15 - lcd tv service manual hisense confidential 3.2 general features.

  • Page 16

    - 16 - lcd tv service manual hisense confidential 4. Chassis layout and overall wiring diagrams 4.1 boards and chassis layout no description part no type/model pcb/ model tv(1) main bd 116468 rsag2.908.1230-4 rsag7.820.1276 tv(2) in/out connector board 116434 rsag2.908.1291 5rsag7.820.1263 tv(3) led...

  • Page 17: 4.2 Connectors

    - 17 - lcd tv service manual hisense confidential 4.2 connectors main board location no. Specification description j901 jack/ff-hx19-10\roh lvds signal between mb and panel j101 jack/tjc10-14a\roh power from power bd j1411 jack/tjc10-3a\roh buttons (connect key bd and main bd) j1410 jack/tjc10-5a\ro...

  • Page 18

    - 18 - lcd tv service manual hisense confidential 4.3 wires and cables overall wiring diagram(s) no description specipication note 1 lvds signal connector/hx-0147\roh main bd j901panel 2 +5v, +12v supply to main bd connector /tjc10t-14y-200\roh main bd j101power bd xp812 3 main power connector /tjc2...

  • Page 19: 5.2 Factory Osd Menu

    - 19 - lcd tv service manual hisense confidential 5. Factory/service osd menu and adjustment 5.1 to enter the factory osd menu a. With factory rc (remote control) 1. Press “m” button and enter factory mode. 2. Press “menu” button and enter factory osd menu. 3. Press “ch+”/“ch-” button select the fun...

  • Page 20

    - 20 - lcd tv service manual hisense confidential c. Close the osd menu after 5 seconds. 5.2.2 factory option item default options notes 1 mode m m, u m-can enter factory mode with factory rc or user rc. U-can enter factory mode only with user’s rc. Note: mode “m” is only used for factory production...

  • Page 21: 5.3 Designer Menu

    - 21 - lcd tv service manual hisense confidential a. Select the item “clear all”. B. Press vol+ button to clear the eeprom data. C. Close the osd menu after 5 seconds. D. Restart the tv. 5.3 designer menu 5.3.1 video mode standard ： tv av s-video component vga hdmi r gain 128 128 128 128 132 130 g g...

  • Page 22

    - 22 - lcd tv service manual hisense confidential b gain 120 120 120 120 120 120 5.3.2 video curve: tv av s-video component vga hdmi bright max 570 570 550 600 650 600 bright min 20 0 0 0 0 0 bright mid 540 540 520 550 510 530 contrast max 550 550 550 550 550 600 contrast min 0 0 0 0 0 0 contrast mi...

  • Page 23: 6. Software Upgrading

    - 23 - lcd tv service manual hisense confidential contrast movie saturation 45 45 45 45 45 45 5.3.4 volume curve ： min 20 mid 80 max tv 0 23 32 47 64 av 0 27 39 52 73 s-video 0 27 38 55 88 hdmi/component/vga 0 24 35 45 80 note ：set downmix to “lt/rt”. 6. Software upgrading the software is upgraded b...

  • Page 24

    - 24 - lcd tv service manual hisense confidential select the default value, the driver will be installed step by step. 6.1.2 hardware connecting connect the unit to your pc with a usb-to-serial port cable. Usb port connects to your pc, and serial port to the tv’s rs232 port. For the first connecting...

  • Page 25

    - 25 - lcd tv service manual hisense confidential.

  • Page 26

    - 26 - lcd tv service manual hisense confidential 6.2 upgrading with the mtktool mtktool is a green program needing no installation. It is saved in the folder . There are five folders/files in this folder altergether. The mtktool using log is restored in the mtklog folder. It records the running tim...

  • Page 27

    - 27 - lcd tv service manual hisense confidential 4—set the flash baud rate to 115200 as the below picture. 5—click the browse button to select the *.Bin file that will be updated. 6—click the “start” button to update software. Select mode of flash chip communicate port set flash baud rate select *....

  • Page 28

    - 28 - lcd tv service manual hisense confidential open “device manager” and find which port is connected with the tv. In above picture, com2 is connected to the tv; so, select “com2” in the mtktool main interface. Select the right baud rate according to chip model. For this unit( chip model is mt538...

  • Page 29

    - 29 - lcd tv service manual hisense confidential click “browse” button, find the upgrading program file, and select it. Press “upgrade” button and start upgrading. The following interface appears on the screen, indicating upgrading successfully..

  • Page 30: 7. Troubleshooting

    - 30 - lcd tv service manual hisense confidential 7. Troubleshooting 7.1 troubleshooting for remote control remote control does not work try new batteries replace rc check ir receiver change led & ir board replace battery replace remote control replace led & ir bd yes yes no yes.

  • Page 31

    - 31 - lcd tv service manual hisense confidential 7.2 troubleshooting for function key buttons does not work check switches check key board check key bd cable change key bd replace main board replace tact switch replace key bd ok yes yes no yes no no.

  • Page 32: 7.3 Tv Won’T Power On

    - 32 - lcd tv service manual hisense confidential 7.3 tv won’t power on make sure power source is live replace power cord check/replace ir bd or keypad pca tv won’t power on is led light? No yes check power inlet yes no check power cord only one works replace main bd try power on by rc and button ne...

  • Page 33

    - 33 - lcd tv service manual hisense confidential 7.4 troubleshooting for audio no sound check connecter check speaker wire replace main board reconnect replace speaker wire yes yes no no check speaker set replace speaker set yes no ok yes no replace psu.

  • Page 34

    - 34 - lcd tv service manual hisense confidential 7.5 troubleshooting for tv/vga/hdmi input no picture on the screen check signal source check connect check cable replace main board make sure signal source is available reconnect replace cable no yes yes no no.

  • Page 35

    - 35 - lcd tv service manual hisense confidential 7.6 troubleshooting for ypbpr input no picture on the screen check source work or not check connect check wires (green blue, red) replace main board check source device reconnect replace wires no yes yes no yes no.

  • Page 36: Input

    - 36 - lcd tv service manual hisense confidential 7.7 troubleshooting for video/s-video input no picture on the screen check source work or not check connect check cable/ wires replace main board check signal source reconnect replace cable/wires no yes yes no yes no.