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 2 November 2020

SONY TRINITRON COLOR TV KV-25FX20A RM-887 ITALIAN TYPE SCC-Q32B-A – LED BLINKING CODES, ELECTRIC CIRCUIT DIAGRAM [SCHEMATIC]


 Applicable to:

KV-25FX20B RM-887 French SCC-Q33B-A
KV-25FX20D RM-887 AEP SCC-Q31B-A
KV-25FX20E RM-887 Spanish SCC-Q34B-A
KV-25FX20K RM-887 OIRT SCC-Q36C-A
KV-25FX20R RM-887 OIRT SCC-Q36D-A

KV-29FX20A RM-887 Italian SCC-Q32A-A
KV-29FX20B RM-887 French SCC-Q33A-A
KV-29FX20D RM-887 AEP SCC-Q31A-A
KV-29FX201D RM-887 AEP SCC-Q31E-A
KV-29FX20E RM-887 Spanish SCC-Q34A-A
KV-29FX201E RM-887 ESP SCC-Q34E-A
KV-29FX20K RM-887 OIRT SCC-Q36B-A
KV-29FX20R RM-887 OIRT SCC-Q36A-A
KV-29FX20U RM-887 UK SCC-Q35A-A


SELF DIAGNOSTIC SOFTWARE
The identification of errors within the FE-1A chassis is triggered in one of two ways :- 1: Busy or 2: Device failure to respond to IIC. In the event of one of these situations arising the software will first try to release the bus if busy (Failure to do so will report with continuous flashing LED) and then communicate with each device in turn to establish if a device is faulty. If a device is found to be faulty the relevant device number will be displayed through the LED (Series of flashes which must be counted) See Table 1., non fatal errors are reported using this method.
Each time the software detects an error it is stored within the NVM.


How to enter into Table 2

1. Turn on the main power switch of the TV set and enter into the ‘Standby Mode’.
2. Press the following sequence of buttons on the Remote Commander.

3. The following table will be displayed indicating the error count.

To clear the error count data press ‘80’ on the Remote commander.

Schematic diagram




Semiconductors bases


IC BLOCK DIAGRAMS