Tuesday, January 19, 2016

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