Hisense LCD Television service LCD32V86 Manual

Hisense LCD Television service LCD32V86 Manual

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 important to the safe, reliable operation of all Hisense Electric Co., Ltd Equipment. The service procedures recommended by Hisense and described in this Service Guide are effective methods of performing service operations. Some of these service operations require the use of tools specially designed for the purpose. The special tools should be used when and as recommended. It is important to note that this manual contains various CAUTIONS and NOTICES which should be carefully read in order to minimize the risk of personal injury to service personnel. The possibility exists that improper service methods may damage the equipment. It is also important to understand that these CAUTIONS and NOTICES ARE NOT EXHAUSTIVE. Hisense could not possibly know, evaluate and advise the service 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, which are not recommended by Hisense, must first satisfy himself thoroughly that neither his safety nor the safe of the equipment will be jeopardized by the service method selected.
Hereafter throughout this manual, Hisense Electric Co., Ltd will be referred to as Hisense.

Warning

Critical components having special safety characteristics are identified with a by the Ref. No. in the parts list. Use of substitute replacement parts, which do not have the same specified safety characteristics, may create shock, fire, or other hazards. Under no circumstances should the original design be modified or altered without written permission from Hisense. Hisense assumes no liability, express or implied, arising out of any unauthorized modification of design. Serviceman assumes all liability.

DANGERCAUTION CAUTION
TO ENSURE THE CONTINUED RELIABILITY OF THIS PRODUCT, USE ONLY ORIGINAL MANUFACTURER’S REPLACEMENT PARTS, WHICH ARE LISTED WITH THEIR PART NUMBERS IN THE PARTS LIST SECTION OF THIS SERVICE GUIDE.

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 set by a wristband with resistance. Keep components and tools also at this same potential.

1. Never replace modules or other components while the unit is switched on.
2. When making settings, use plastic rather than metal tools. This will prevent any short circuits and the danger of a circuit becoming unstable.

To prevent electrical shock, do not use this polarized ac plug with an extension cord, receptacle, or the outlet unless the blades can be fully inserted to prevent blade exposure. To prevent electrical shock, match wide blade or plug to wide slot, fully insert.

When replacement parts are required, be sure to use replacement parts specified by the manufacturer or have the same characteristics as the original part. Unauthorized substitutions may result in fire, electric shock, or other hazards.

Safety regulations require that after a repair the set must be returned in its original condition. In particular attention should be paid to the following points.
-Note: The wire trees should be routed correctly and fixed with the mounted cable clamps.
-The insulation of the mains lead should be checked for external damage.

(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 higher than that specified to this product. This may damage the product and may cause a fire.
(3) Do not use this product in locations where the humidity is extremely high, where it may be splashed with water, or where flammable materials surround it. Do not install or use the product in a location that does no satisfy the specified environmental conditions. This may damage the product and may cause a fire.
(4) If a foreign substance (such as water, metal, or liquid) gets inside the panel module, immediately turn off the power. Continuing to use the product may cause fire or electric shock.
(5) If the product emits smoke, and abnormal smell, or makes an abnormal sound, immediately turn off the power. Continuing to use the product, it may cause fire or electric shock.
(6) Do not disconnect or connect the connector while power to the product is on. It takes some time for the voltage to drop to a sufficiently low level after the power has been turned off. Confirm that the voltage has dropped to a safe level before disconnecting or connecting the connector.
(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 loose, do not use the product: otherwise, this can lead to fire or electric shock.
(10) If the power connector or the connector of the power cable becomes dirty or dusty, wipe it with a dry cloth. Otherwise, this can lead to fire.
(11) Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip- over.

Notes

Notes on Safe Handling of the LCD panel and during service
The work procedures shown with the Note indication are important for ensuring the safety of the product and the servicing work. Be sure to follow these instructions.

• Before starting the work, secure a sufficient working space.
• At all times other than when adjusting and checking the product, be sure to turn OFF the POWER Button and disconnect the power cable from the power source of the TV during servicing.
• To prevent electric shock and breakage of PC board, start the servicing work at least 30 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 other than the ones specified. If any connection other than the one specified is made between the measuring equipment and the high voltage power supply block, it can result in electric shock or activation of the leakage-detection circuit breaker.
• When installing the LCD module in, and removing it from the packing carton, be sure to have at least two persons perform the work.
• When the surface of the panel comes into contact with the cushioning materials, be sure to confirm that there is no foreign matter on top of the cushioning materials before the surface of the panel comes into contact with the cushioning materials. Failure to observe this precaution may result in, the surface of the panel being scratched by foreign matter.
• When handling the circuit board, be sure to remove static electricity from your body before handling the circuit board.
• Be sure to handle the circuit board by holding the large parts as the heat sink or transformer. Failure to observe this precaution may result in the occurrence of an abnormality in the soldered areas.
• Do not stack the circuit boards. Failure to observe this precaution may result in problems resulting from scratches on the parts, the deformation of parts, and 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 areas that become hot (such as the heat sink). These wires are fixed in position with the wire clamps so that the wires do not move, thereby ensuring that they are not damaged and their materials do not deteriorate over long periods of time. Therefore, route the cables and fix the cables to the original position and states using the wire clamps.
• Perform a safety check when servicing is completed. Verify that the peripherals of the serviced points have not undergone any deterioration during servicing. Also verify that the screws, parts and cables removed for servicing purposes have all been returned to their proper locations in accordance with the original setup.

The lightning flash with arrowhead symbol, within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the products enclosure that may be of sufficient magnitude to constitute a risk of electric shock.

The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the set.

Product Function Specifications

Specifications

LCD Panel Spec

LCD32V86
Panel ： LTA320AP02 \ROH SN ：1058148
LCD32V86P
Panel ：T315HW02V0 \ROH SN ：1057323

Panel: LTA320AP02 \ROH

General Description

General Features

Chassis Layout and Overall Wiring Diagrams

Boards and Chassis Layout

Factory/Service OSD Menu and Adjustment

To enter the Factory OSD Menu

1. With factory RC (remote control)

2. Press “M” button and enter factory mode.

3. Press “Menu” button and enter factory OSD menu.

4. Press “CH+”/“CH-” button select the function menu, press “VOL+”/“VOL-” enter the selected function menu. Press “VOL+”/“VOL-” button adjust values in the menu.

5. With user’s RC

6. Power TV On

7. Press Menu button and call up User OSD Menu

8. Select Audio-> Balance

9. Enter 0->5->3 ->2 in sequence.
   Note : If necessary, re-do number keys.

10. Factory OSD appears.

11. Press Menu again and leave factory OSD.

Factory OSD Menu

White Balance

Note : Different source has different WB values. Before adjusting, please change to desired source.

1. Auto Color
   For VGA and Component Video sources, WB values must be adjusted. And at others signal sources, the “auto colour “does not work.
   Before adjusting, prepare the signal instruments such as DVD or K-8256 first, and find the video picture with gray and color bars. Then please change to desired source.

Notes :

1. Press “M” button and enter factory mode.
2. Press “Menu” button and enter factory OSD menu.
3. Select the item “Auto Color”.
4. Press VOL+ button to auto color.
5. Close the OSD menu after 5 seconds.

Factory Option

Note : The factory menu date varies according to different sources. Incase changing the factory data by error, you can choose to “Clean Protected”, by which you can resume the default value. To clear the EEPROM:

1. Select the item “Clean All”.
2. Press VOL+ button to clear the EEPROM data.
3. Close the OSD menu after 5 seconds.
4. Restart the TV.

Designer Menu

The above “Factory/Service OSD Menu ” are reference only, please refer to the actual units to determine the appearances.

Software Upgrading

The first upgrading method :

The software is upgraded by a burning toll-MtkTool, which can burn the program file *.bin to the main board of the unit.

Get ready for upgrading

Install the driver

Hardware connecting

For the first connecting, the pc will recognize and automatically install the USB device. The process is just like the installation of a mini disk, see the following picture.

Upgrading with the MtkTool

Ignore these errors, click “Confirm” and enter the MtkTool main interface, see the following picture.

Flash chip model
Please refer to follow steps to update the software:

1. Select mode of Flash chip to MT8226 as the below picture.
2. Refer to the next page instruction to select the communicate port.
3. Press the icon beside the baud rate and make sure it is green as the below picture.
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.

Open “Device Manager” and find which port is connected with the TV. In this operation, COM5 is connected to the TV; so, select “COM5” in the MtkTool main interface. Select the right baud rate according to chip model. For this unit( chip model is MT8226), select 115200..So choose “Auto Set Flash BaudRate”

Note : Whether or not click the “Auto Set Flash Baud Rate” in the “window” menu depends on the chip type. If the flash chip does not support high speed transport, do not select this option; otherwise, reserve the selected mood.

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.

Update with USB directly

The second update method is with USB directly:
MTK8222 Series can update with USB, the software name should be HISENSE.bin. The Updating Steps is set the Source to “DMP interface”, insert the USB(the update file HISENSE.bin, which should be in root directory),The TV automatic
identify the upgrading software. step by step according as the information’s of the upgrading process.

(USB to the Main board directly)

After upgrading, you must confirm the software in the Factory Menu and you’d better “CLEAR UNPROTECTLY”.

Troubleshooting

Troubleshooting for Remote Control

Troubleshooting for Function Key

TV won’t Power On

Troubleshooting for Audio

Troubleshooting for TV/VGA/HDMI input

Troubleshooting for YPbPr input

Troubleshooting for Video/S-Video input

Schematic circuit diagram

LCD Television service LCD32V86 Manual – Optimized PDF
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