Firmware Renewal Mode - Denon DVD-1720/556 Service Manual

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. Fig. a appears on the screen
and Fig. b appears on the VFD.
" ******* " differ depending on the models.
F/W Version Up Mode
Please insert a DISC
for F/W Version Up.
Fig. a Version Up Mode Screen
Fig. b VFD in Version Up Mode
The DVD player can also enter the version up
mode with the tray open. In this case, Fig. a will be
shown on the screen while the tray is open.
3. Load the disc for version up.
4. The DVD player enters the F/W version up mode
automatically. Fig. c appears on the screen and
Fig. d appears on the VFD. If you enter the F/W for
different models, "Disc Error" will appear on the
screen, then the tray will open automatically.
" ******* " differ depending on the models.
F/W Version Up Mode
VERSION :
Reading...
(*1)
Fig. c Programming Mode Screen
Fig. d VFD in Programming Mode (Example)
The appearance shown in (*1) of Fig. c is
described as follows:
No. Appearance
1 Reading... Sending files into the memory
2 Erasing... Erasing previous version data
3 Programming... Writing new version data

FIRMWARE RENEWAL MODE

Model No : *******
VERSION : *.**
EXIT: POWER
Model No : *******
VERSION : *.**
************.ab6
State
5. After programming is finished, the tray opens
automatically. Fig. e appears on the screen and
the checksum in (*2) of Fig. e appears on the VFD
(Fig. f).
F/W Version Up Mode
VERSION :
Completed
(*2) SUM : 7ABC
Fig. e Completed Program Mode Screen
Fig. f VFD upon Finishing the Programming Mode (Example)
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.
Fig. g appears on the screen.
MODEL : *******
Version : *.**
Region : *
EEPROM CLEAR : CLEAR
16
DVD-1720/556
" ******* " differ depending on the models.
Model No : *******
VERSION : *.**
************.ab6
" ******* " differ depending on the models.
EXIT: POWER
Fig. g