Denon RCD-N7 Service Manual page 37

1.3. Trouble Shooting
If you find the following Error codes, please solve root cause of malfunction.
(1) If updating is failed, the following ERROR indication is displayed.
First line (Error number): "Updating fail: YY, n/N"YY: Error number
Second line (Time on error): "xx min yy%"
Third line (name of firmware)
Error code table
Error Code
q Error before updating
01 Tray Open/Close failure
02 No Disc
03 Disc error(TOC not read )
04 No update file
05 Update file read error
w Error at writing System Microprocessor
10 Update file check sum error
11 Erase failure
12 Write failure
13 Verify incorrect
e Error at writing Display Microprocessor
20 Update file check sum error
21 Erase failure
22 Write failure
23 Verify incorrect
24 Communication error
r Error at writing DM8x0
30 Update failure check sum error
31 Erase failure
32 Write failure
33 Verify incorrect
34 Communication error
B2 DM8x0 firmware rewrite error information received
1.4. Notice of updating firmware
(1) When unit is updating firmware on item "1.2. Procedure of updating (6)", do not turn off the power, or pull out AC
cord from AC wall socket.
(2) If power supply stop to supply microprocessor, unit will be broken.
q When AC cord is pulled while updating System firmware.
⇒ System microprocessor will be broken. Please replace it.
w When AC cord is pulled while updating Display firmware.
⇒ Display microprocessor will be broken. Please replace it.
e When AC cord is pulled while updating DM870Net (IMG) firmware.
⇒ Please update firmware by CD-R again.
(3) When updating is not finished (not 100%), but tray opens automatically over 27 minutes. Probably unit will be
updated firmware completely, therefore please confirm version of firmware. If no, please update again.
(4) After 35 minutes, try does not open or try does open with error indication, please update firmware of unit with CD-R
again.
Details of Error code
37