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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Thursday 21 March 2019

SANYO PLC-XU87 - MULTIMEDIA PROJECTOR - SERVICE MODE - MEMORY IC REPLACEMENT

SANYO PLC-XU87 - MULTIMEDIA PROJECTOR - SERVICE MODE - MEMORY IC REPLACEMENT




TO ENTER SERVICE MODE
  • To enter the “Service Mode”, press and hold the MeNuand SeLect buttonfor more than 3 seconds. The service  menu appears on the screen as follows.

  • To adjust service data; Select the adjustment group no. by pressing the MeNu button(increase) or SeLect button(decrease), and  select the adjustment item no. by pressing the pointer [Up] or [Dn] button, and change the data value by pressing the [Left] or [Right] button. 
  • To "Exit" service mode, press [On / Standby] button.

MEMORY IC REPLACEMENT
  • Memory IC on the main board stores the data for the  service adjustments, and should not be replaced except for the case of defective device.  If replaced, the re-adjustments are required following to  the “Electrical Adjustments”.
  • The data of lamp replacement counter is stored in the Memory IC.   Note that the lamp replace counter will be reset when the memory IC is replaced.  (Lamp replace counter cannot be set to the previous value.)
Caution to memory IC replacement
  • When memory IC is replaced with new one, the CPU  writes down the default data of the service adjustments  to the replaced IC as the mentioned on the service adjustment table. As these data are not the same data as factory shipped data, it should be required to perform the re-adjustments following to the “Electrical Adjustments”.  Note that in this case the lamp replace counter will be reset.
Caution of Main Board replacement (in the case memory ICis not defective)
  • When the main board is replaced, memory IC should be replaced with the one on previous main board. After replacement, it should be required to perform the re-adjustments following to the “Electrical Adjustments”.  In this case, the lamp replace counter can be kept the value as before.