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 !

Thursday, 14 March 2019

SONY CCD-TR517 - SERVICE MODE – SELF DIAGNOSIS - FORCE EJECT

SONY CCD-TR517 - SERVICE MODE – SELF DIAGNOSIS - FORCE EJECT

APPLICABLE TO - SONY CCD-TR317 _ TR517 _ TRV17 _ TRV37 _ TRV47 _  TRV57 _ TRV57P _ TRV67 _ TRV87 _ TRV87P
POWER SUPPLY DURING REPAIRS
In this unit, about 10 seconds after power is supplied (8.4V) to the battery terminal using the service power cord (J-6082-223-A), the power is shut off so that the unit cannot operate.  This following two methods is available to prevent this. Take note of which to use during repairs.
Method 1.
Connect the servicing remote commander RM-95 (J-6082-053-B) to the LANC jack, and set the remote commander switch to the “ADJ” side.
Method 2.
Use the DC IN terminal. (Use the AC power adapter.)
TO TAKE OUT A CASSETTE WHEN NOT EJECT (FORCE EJECT)
  1. Remove the front panel block assembly.
  2. Remove the cabinet (R) block assembly.
  3. Remove the cassette lid assembly.
  4. Remove the battery panel block assembly.
  5. Remove the cabinet (L) assembly.
  6. Disconnect CN974 of VC-234 board.
  7. Add +5V from the DC POWER SUPPLY and unload with a pressing the cassette compartment.
  8. Pull the timing belt in the direction of arrow [A] with a pincette while pressing the cassette compartment (take care not to damage) to adjust the bending of a tape.
  9. Let go your hold the cassette compartment and raise the cassette compartment to take out a cassette.
CLICK ON THE PICTURES TO ZOOM IN
Self-diagnosis Function
When problems occur while the unit is operating, the self-diagnosis function starts working, and displays on the viewfinder or Display window what to do. This function consists of two display; self-diagnosis display and service mode display.  Details of the self-diagnosis functions are provided in the Instruction manual.
Self-diagnosis Display
When problems occur while the unit is operating, the counter of the viewfinder or Display window shows a 4-digit display consisting of an alphabet and numbers, which blinks at 3.2 Hz. This 5-character display indicates the “repaired by:”, “block” in which the problem occurred, and “detailed code” of the problem.
Service Mode Display
The service mode display shows up to six self-diagnosis codes shown in the past.
Display Method
While pressing the “STOP” key, set the switch from OFF to “VTR or PLAYER”, and continue pressing the “STOP” key for 5 seconds continuously. The service mode will be displayed, and the counter will show the backup No. and the 5-character self-diagnosis codes.
Switching of Backup No.
By rotating the control dial, past self-diagnosis codes will be shown in order. The backup No. in the [] indicates the order in which the problem occurred. (If the number of problems, which occurred, is less than 6, only the number of problems, which occurred, will be shown.)
[1] : Occurred first time
[2] : Occurred second time
[3] : Occurred third time
[4] : Occurred fourth time
[5] : Occurred fifth time
[6] : Occurred the last time
End of Display
Turning OFF the power supply will end the service mode display.  Note: The “self-diagnosis display” data will be backed up by the coin-type lithium battery (CF-66/67 board BH001). When this coin-type lithium battery is disconnected, the “self-diagnosis display” data will be lost by initialization.
Self-diagnosis Code Table