REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

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All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Monday 11 March 2019

SHARP LC-60UD27UM - LC-70UD27U SERVICE MODE

SHARP LC-60UD27UM - LC-70UD27U SERVICE MODE


ADJUSTMENT PROCEDURE
The adjustment values are set to the optimum conditions at the factory before shipping. If a value should become improper or an adjustment is
required due to part replacement, make an adjustment according to the following procedure.
1.After replacement of any PWB unit and/or IC for repair, please note the following.
• When replacing the following units, make sure to prepare the new units loaded with updated software.
• When replacing the LCD control PWB, perform the VCOM adjustment.
2. Upgrading of each microprocessor software
CAUTION: Never “POWER OFF” the unit when software upgrade is ongoing.
Otherwise the system may be damaged beyond recovery.
Software version upgrade
The model employs the following software.
• Main software (please use a software version after ALTR_UD27U_XXX.USB).
The main software can be upgraded by using a general-purpose USB Memory.
The followings are the procedures for upgrading, main software can be upgraded as the same time.
Main software version upgrade
Get ready before you start
• USB Memory of 512MB or higher capacity.
• PC running on Windows 98/98SE/ME/2000/XP/Vista/Win7/Win8 operating system.
• USB Memory reader/writer or PC with a USB port.
• The file system of a USB memory is FAT. (FAT32 supports)
• Use the USB memory without other functions. (lock and memory reader...etc)
Preparations
To upgrade the main software, it is necessary to get ready the USB Memory for version upgrade before you start.
Follow the steps below and create the USB Memory for version upgrade.
1. Copy the file ALTR_UD27U_XXX.USB for version upgrade to the root directory (folder) of the USB Memory.
NOTE: In the USB Memory drive, do not store other folders or unrelated files, or more than one file for version upgrade. Now the USB Memory for version upgrade is ready.
How to upgrade the software
1. Unplug the AC cord.
2. Insert the USB Memory for version upgrade into the service socket.
3. Plug in the AC cord with power button pressed down.
4. After 5 seconds, unpress the power button.
5. After the unit startup, the system upgrade screen as shown below within 20-40 seconds.
6. Even a single failure in the process will trigger the upgrade failure screen.
NOTE: In the event of a failure, repeat the upgrade process. If the process repeatedly fails, it is likely that the hardware need fixing.
7. Upon completion of the whole process, the upgrade success screen as shown below appears. You can check the new software version on this screen. The version information appears after the upgrade is complete.
8. Unplug the AC cord and remove the USB Memory for version upgrade.
9. Now the software version upgrade is complete.
NOTE: When you are done with the software version upgrade, start the set, go to the top page of the adjustment process screen and check the main software version information.
3. Entering and exiting the adjustment process mode
1) Before entering the adjustment process mode, the AV position RESET in the video adjustment menu.
2) While holding down the “VOL (–)” and “INPUT” keys at a time, plug in the AC cord of the main unit to turn on the power.
The letter “<K>” appears on the screen.
3) Next, hold down the “VOL (–)” and “CH ( V )” keys at a time.
(The “VOL (–)” and “CH ( V )” keys should be pressed and held until the display appears.)
Multiple lines of blue characters appearing on the display indicate that the unit is now in the adjustment process mode. When you fail to enter the adjustment process mode (the display is the same as normal startup), retry the procedure.
4) To exit the adjustment process mode after the adjustment is done, unplug the AC cord from the outlet to make a forced shutdown. (When the power was turned off with the remote controller, once unplug the AC cord and plug it again. In this case, wait 10 seconds or so before plugging.)
CAUTION: Use due care in handling the information described here lest your users should know how to enter the adjustment process mode. If the settings are tampered in this mode, unrecoverable system damage may result.
4. Remote controller key operation and description of display in adjustment process mode
1) Key operation
Remote controller key
Main unit key
Function
CH ( ^/v )
CH (^ /v )
Moving an item (line) by one (UP/DOWN)
VOL (+/–)
VOL (+/–)
Changing a selected item setting (+1/ –1)
Cursor (UP/DOWN)
—————
Turing a page (PREVIOUS/NEXT)
Cursor (LEFT/RIGHT)
—————
Changing a selected line setting (+10/ –10)
INPUT
—————
Input switching (toggle switching)
ENTER
—————
Executing a function

*Input mode is switched automatically when relevant adjustment is started so far as the necessary input signal is available.
PUBLIC MODE SETTING PROCEDURE
1. How to start Public Mode
• There are the following two ways to get the public mode setup screen displayed.
In the adjustment process mode, turn on “PUBLIC MODE”. Also press the “CH ( )” and “VOL (+)” keys on the set at once and turn on the power.
1) Press the “INPUT” and “VOL (+)” keys on the set at once and turn on the power.
2) Get the password input screen displayed.
Procedure
The input starts with the leftmost digit.
Use the numeric keys [1] thru [9] and [0] keys on the remote controller.
The other keys are not acceptable.
With a numeric-key input, "_" will change to " ".
The input position will move one digit to the right.
With all the 3 digits entered, the password will be verified.
3) The 3-digit password is now verified.
The password [0] [2] [7] provides for the public mode screen. (This screen comes on with whatever adjustment process settings.)
With any other passwords, the screen changes to the normal mode.
How to exit Public Mode
There are the following ways to quit the public mode setup screen.
• Turn off “PUBLIC MODE” in the adjustment process mode. ( * ) ← This way alone is not for quitting the setup screen, but for quitting the mode itself.
• Turn off the power with the “POWER” key. ( * )
• Select “EXECUTE”. ( * )
... “PUBLIC MODE” stays on in the adjustment process mode.
... The settings will be back to the factory ones.
Public Mode Menu
The guidance is not displayed on screen.
Setup procedure
• To move the cursor up and down, use the “cursor UP/DOWN” key (remote controller) and “CH (^ )/(v )” key (remote controller and set).
• To change the settings, use the “cursor RIGHT/LEFT” key (remote controller) and “VOL (+)/(–)” key (remote controller and set).
• To save new settings, keep the cursor at “EXECUTE” and use “ENTER” key (remote controller and set).
[How to use USB clone]
This is the function that copying the one TV's user setting to other TVs or copying previous user setting to itself.(Only same series.)
1. Insert the USB memory to TV.
2. Insert AC code of TV with pushing the “INPUT” and “Vol+” keys which are on the tact key.
3. Enter the password by using R/C. The password is “027”.
4. Select “COPY MODE”.
5. The follow guide is displayed. Then select the “TV→USB [Start]”.
7. Insert the USB which has the data from TV to another TV or itself.
8. Insert AC code of the TV with pushing the “INPUT” and “Vol+” keys which are on the tact key.
9. Select “COPY MODE”.
10.The following guide is dispalyed.Then select the “USB→TV [Start]”.
11.Follow guide is displayed when it is finished, then select “Reset”. TV will restart.
12.Confirm the user setting is copied.
Posted By: FRANK at 05:30
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