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 !

Wednesday 6 March 2019

DENON DVD-1720 - DVD556 FACTORY RESET - FIRMWARE UPDATE - HOW TO REMOVE THE DISC WHEN THERE IS NO POWER - POWER SUPPLY CIRCUIT DIAGRAM - DVD REPAIR AND SERVICE - MANUAL SERVICE

DENON DVD-1720 - DVD556 Factory reset - Firmware update - How to remove the disc when there is no power - Power supply circuit Diagram - DVD repair and service - Manual service

                                                                     Category: DVD player Repair and Service 

Contents of this article 

  • How to do factory reset 
  • Firmware update 
  • How to eject the disc

DENON DVD-1720 - DVD556 

HOW TO INITIALIZE THE DVD PLAYER
To put the program back at the factory-default, initialize the DVD player as the following procedure.
1. Press [1], [2], [3], [4], and [DISPLAY] buttons on the remote control unit in that order.2. Press [CLEAR] button on the remote control unit.
When “OK” appears on the screen, the factory default will be set.
3. To exit this mode, press [POWER OFF] button.
FIRMWARE RENEWAL
1. Turn the power on and remove the disc on the tray.
2. To put the DVD player into version up mode, press [9], [8], [7], [6], and [SEARCH MODE] buttons on the remote control unit in that order. The tray will open automatically.
The DVD player can also enter the version up mode with the tray open.
3. Load the disc for version up.
4. The DVD player enters the F/W version up mode automatically. If you enter the F/W for different models, “Disc Error” will appear on the screen, then the tray will open automatically.
5. After programming is finished, the tray opens automatically.
At this time, no button is available.
6. Remove the disc on the tray.
7. Unplug the AC cord from the AC outlet. Then plug it again.
8. Turn the power on by pressing the [POWER ON] button and the tray will close.
9. Press [1], [2], [3], [4], and [DISPLAY] buttons on the remote control unit in that order.
10. Press [CLEAR] button on the remote control unit.
When “OK” appears on the screen, the factory default will be set. Then the firmware renewal mode is complete.
11. To exit this mode, press [POWER OFF] button.
How to Eject Manually
1. Remove the Top Cover.
2. Rotate the roulette in the direction of the arrow as shown below.
POWER SUPPLY CIRCUIT DIAGRAM 
CLICK ON THE IMAGE TO ZOOM IN
Posted By: FRANK at 02:56
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