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!

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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

SONY DVP S-530D - DISC TRAY REMOVAL

SONY DVP S-530D - DISC TRAY REMOVAL



TRAY REMOVAL
  • Remove the two screws and the mechanism’s top cover to expose the tray and laser platform.
  • Locate the top pawl under the tray by inserting a small screwdriver between the platform and tray. The pawl is just in front of the spindle motor.
  • Slide the pawl to the right to lower the platform and free the tray.
  • Remove the tray.
Tilt Motor: Purpose
  • Maximum RF output level occurs when the laser beam is perpendicular to the disc’s information layer. The tilt motor raises one end of the laser platform so its beam is perpendicular to the disc.
ACCESS OPTION
  • The tilt motor is a stepping motor located next to the incline gear. At power OFF, the incline gear lowers one end of the laser platform. At power ON, the incline gear raises the platform to full height.
The stepping motor then increments the incline gear to the middle position.  This position is stored in EEProm IC201 and updated during the test mode automatic adjustments. During DVD playback, if the RF level fluctuates, the tilt motor rotates until the RF level stabilizes. The incline gear remains at the middle position during CD playback.

SLED POSITION
The sled motor moves the laser assembly away from home position at the spindle motor. The laser assembly‘s home position is marked as it blocks the light to a photo detector sensor. This picture shows the photo sensor location under the sled motor shaft.
  • FOCUS COIL
    Voltage applied to the focus coil that is connected to the lens opposes a stationary vertical magnet. The force generated moves the objective lens up or down to focus the laser spot on the information layer of the disc.
  • LASER
    A ribbon cable connects the laser assembly to its circuit board. A circuit board connector clamps the assembly’s ribbon cable. Free the cable from the connector by pulling the connector tabs on both sides 1mm toward the cable. The connector will slide out.  In a replacement laser assembly, a spot of solder is placed on the foils of the ribbon cable to protect the laser diode from static damage that will shorten its life. Remove the solder spot AFTER connecting the laser assembly cable to the circuit board.
Posted By: FRANK at 01:54
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