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!

©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes, however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory.
All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Monday 25 March 2019

SHARP LC32HT3U - LC37HT3U - LC42HT3U - ADJUSTMENT PROCEDURE

SHARP LC32HT3U - LC37HT3U - LC42HT3U - ADJUSTMENT PROCEDURE



ADJUSTMENT PROCEDURE
After replacement of any PWB unit and/or IC for repair, note the following.
  • When replacing the following units, make sure to prepare the new units loaded with updated software.
  • MAIN Unit: DUNTKE285FM01
  • AV TERMINAL Unit: DUNTKD999FM04
UPGRADING MICROPROCESSOR SOFTWARE
Caution: Never “POWER OFF” the unit when software upgrade is ongoing.  Otherwise the system may be damaged beyond recovery.
The model employs the following software.
  1. Main software
  2. Monitor microprocessor software
  • The main software and the monitor microprocessor software can be upgraded by using a general-purpose SD memory card.
  • The followings are the procedures for upgrading, explained separately for each of the main software, the monitor microprocessor software.
MAIN SOFTWARE VERSION UPGRADE
Get ready with
  • SD memory card of 32MB or higher capacity
  • PC running on Windows 98/98SE/ME/2000/XP operating system
  • SD memory card reader/writer with USB connectivity.
  • SD memory card formatting software.  The software can be downloaded by this link.
PREPERATIONS
  • To upgrade the main software, it is necessary to get ready the SD card for version upgrade before you start.  Follow the steps below and create the SD card for version upgrade.
  • Insert the SD card into the SD card reader/writer. Start the SD card formatting software. Click [Format].  (When you have the drive options, select the drive where the SD card is inserted before you proceed.)
  • When the formatting is over, the following window appears. Click [OK].
  • Click [Exit] to finish the formatting.  NOTE: When you are done, take out the SD card once to make sure it is finished, and then insert it again.
  • Copy the binary image file HT3UAxxx.SDC (named temporarily) for version upgrade to the root directory (folder) of the SD card drive.  NOTE: In the SD card drive, do not store other folders or unrelated files, or more than one binary image files for version upgrade.  Now the SD card for version upgrade is ready.
TO UPGRADE SOFTWARE
  • Shut off the AC power (i.e. unplug the AC cord).
  • Insert the SD card for version upgrade (prepared as above) into the service socket located lower side from center at terminals, under DIGITAL AUDIO OUTPUT terminal in the rear of the unit, in a way that the cut corner of the SD card comes at the upper side.  NOTE: If the SD card is inserted in a wrong way, the card will go deep inside the unit beyond retrieval. Take due care to insert the SD card correctly.
  • Turn on the AC power (i.e. plug in the AC cord).
  • After the unit startup, the system upgrade screen as shown below appears within 15~30 seconds.
  • Even a single failure in the process will trigger the upgrade failure screen as shown below. The word “NG” changes to red for the item failed.  NOTE: In the event of a failure, repeat the upgrading process. If the process repeatedly fails, it is likely that the hardware is troubled.
  • 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.
  • Shut off the AC power to the unit (unplug the AC cord), and remove the SD card for version upgrade.
  • 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.
MONITOR MIRCROPROCESSOR SOFTWARE UPGRADE
NOTE: If “Monitor version” in the process menu is “2.00M”, the monitor microprocessor software can not be rewritten (because IC2002 has been replaced with the mask type).
CAUTION: The moment this operation is done, the upgrading of the monitor microprocessor software starts. While the upgrade is ongoing, never power off the unit. Otherwise the upgrade will fail and the system may have a serious damage beyond recovery (inability to start).
  • Create the SD card for monitor microprocessor software version upgrade in the same manner as explained in the “Main software version upgrade”.  Copy the binary image files HT3UVxxx.SDC and D42UMxxx.BIN (named temporarily) for monitor microprocessor software version upgrade to the SD card drive.
  • Shut off the AC power to the unit (i.e. unplug the AC cord).
  • Insert the SD card for version upgrade (prepared as above) into the service socket located lower side from center at terminals, above S-VIDEO terminal in the rear of the unit, in a way that the cut corner of the SD card comes at the upper side.  NOTE: If the SD card is inserted in a wrong way, the card will go deep inside the unit beyond retrieval. Take due care to insert the SD card correctly.
  • Turn on the AC power (i.e. plug in the AC cord).
  • After the unit startup, the system upgrade screen as shown below appears within 15~30 seconds.
  • A failure in the process will trigger the upgrade failure screen. The word “NG” changes to red for the item failed.  NOTE: In the event of a failure, repeat the upgrading process. If the process repeatedly fails, it is likely that the hardware is troubled.
  • 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.
  • Shut off the AC power to the unit (unplug the AC cord), and remove the SD card for version upgrade.
  • 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 monitor microprocessor software version information.
Posted By: FRANK at 03:04
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