Error Display - Denon AVR-E300 Service Manual

1.3. Error display

See the following table for each "Error information" display and its explanation (status).
Display order is q , w , e , r , t .
Condition
Compared with the destination setting on the
board. This is displayed when the model name
q
Firm Check NG or destination information written into the
firmware does not match. ( b )
w
No response from DIR
DIR NG
When DSP code boot is performed, the DSP
FLAG0 port does not change to "H" even if DSP
Before DSP command is issued, the DSP
FLAG0 port does not change to "H".
When DSP data read is performed, executing
e
WRITE="L" does not result in ACK="H".
DSP NG
When DSP data read is performed, executing
REQ="L" does not result in ACK="L".
When DSP data writing is performed, executing
WRITE="H" does not result in ACK="H".
When DSP data writing is performed, executing
REQ="L" does not result in ACK="L".
Error occurs in EEPROM checksum.(*** is a
r
EEPROM NG block address number.)
t
Both DSP /
EEPROM OK
When the firmware version is displayed, ▲ is
displayed at the start of the firmware.
Status
reset is executed.
Status
b
FL Display
F I R M E R R O R
D I R E R R O R
D S P E R R O R
D S P E R R O R
D S P E R R O R
D S P E R R O R
D S P E R R O R
D S P E R R O R
E 2 P R O M E R R * * *
(No error display, version display only)
FL Display
M a i n : * * * * * * * *
D S P
A u d i o P L D : * * . * *
G U I : * * * * * * * *
22
Trouble shooting
• Please check the
destination-resistors
(R7663/R7664, DIGITAL
• Please write the firmware
of correct destination.
• Please check DIR （IC782,
DIGITAL PCB) and
0 1
around circuits.
0 1
0 2
• Please check DSP
0 3
（IC791, DIGITAL PCB)
and around circuits.
0 4
0 5
0 6
: * * . * *
PCB).