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 !

Tuesday 19 March 2019

SHARP LC-37GA8 - SHARP LC-32GA8 - HOW TO UPGRADE SOFTWARE - I2C METHOD

SHARP LC-37GA8 - SHARP LC-32GA8 - HOW TO UPGRADE SOFTWARE - I2C METHOD

SOFTWARE UPGRADE [IIC-METHOD]
The hardware tools requirement are:
  1. A Parallel port I2C interface with 20 pin to 3 pin cable (Sharp Code: CKIT-0004WJV0).
Make the connections as indicated below:
  • Connect Parallel port I2C interface to LPT port of the computer.
  • Connect the 20 to 3 pin cable from the I2C interface to the P2306 socket in the main board (XD603).
Before using I2C method is necessary to install Visual I2C software following next procedure.
  • Install Visual I2C release V3.2.3b from file (“Setup_Visual_I2C_v3-2-3b8h.exe”).
  • It’s strongly recommended to accept the suggested default folder (“C:\Program Files\Micronas\Visual I2C”).
  • Install Visual I2C VCTp extension from file (“Setup_VI2C_for_VCT6wxyP_v0111.exe”).
  • It’s interesting to change default folder to same as Visual I2C (“C:\Program Files\Micronas\Visual I2C”).  During this installation process is possible to install also a complementary software to manage NVM memories .
  • This installation is not needed, for this reason uncheck the option when the setup program ask to you. In case of installation it’s interesting to change default folder to same as Visual I2C (“C:\Program Files\Micronas\Visual I2C”).
  • Install Parallel driver depending of your Windows version from existing files inside the Visual I2C installation folder “C:\Program Files\Micronas\Visual I2C\Port_Driver”, following next criteria
[A] Windows 98/Me (“Setup_LptDrv_v0104_9x.exe”).
[B] Windows NT (“Setup_LptDrv_v0104_NT_2000.exe”).
[C] Windows Xp/2000 (“Setup_LptDrv_v020201_XP_2000.exe”).
After installing Visual I2C, the new generated file structure should look like this:
  • Check installation LPT driver using “C:\Program Files\Micronas\LptDrv\LptDrvTest.exe”. After run this software, if LPT driver is installed properly must appear this screen
  • If the result is not OK, check inside PC Bios:  Parallel Port Mode=EEP
  • To run VCTp software update program, click over 'VCTP' icon from the 'Start\all programms\micronas\visualI2C\IC\VCTP and after Visual I2C finish their starting processes click on 'TVT' modlule.  As addisional method it is possible to create a direct access to C:\Program files\Micronas\Visual I2C\ic\vct6wxyP\vctq_tvt.vi2c and launch it from windows desktop.
To start updating process follow next instructions:
  • Set Autoread in ON option.
  • Click on “GO” button.
  • Wait until “40” appears in Bootloader Version field.
  • Close DOS pop up windows pressing any key (“Press any key to continue…”.).
  • Click on the “Erase flash” button and wait for a seconds and set the AutoRead to OFF.
  • Check in the desired software version is selected in the “Load BinàFlash” option. If it’s not the correct one, double click on the file name and select it. The first time this software is use it’s necessary to confirm write Addressing margin as from 0x0 to 0x7ffff.
  • Click on the 'Load Bin -> Flash' to start updating process.
When updating process finishes, the ‘Progress’ pop up window automatically  closes.  If appears some problem during the updating process a error label appears in the file name information line.  If the TV has problem to enter in the ‘Bootloader mode’, it is possible to force it by hardware method.  This alternative method is described below.
  1. Switch off the TV set, or hold VCTp RESET line to GND.
  2. Pull down the SCL line [pin-1] to GND [pin-3] in P2306 connector.
  3. Switch on the TV set or release VCTp RESET line.
  4. Release SCL pull down after minimum of 2 seconds.
  5. Check if VCTp is in Bootloader mode with Autoread setting in ON.
  6. Follow the instruction from item 5 on software method.
Sometimes depending on the PC hardware, the progress bar runs very fast [Normal time: 1 minute], or some error message appears in the file-name information line.  This means it’s necessary to modify some parameter of LPT port, for this reason select ‘LPT Preferences’ on the ‘File\Preferences…’ menu and increase Delay from ‘0’ to ‘1’ or ‘2’.
Posted By: FRANK at 03:11
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