Denon AVR-1712, Service Manual

Page: 18 / 161

18
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 Status FL Display Trouble shooting
q
Firm Check
NG
Compared with the destination setting
on the board. This is displayed when the
model name or destination information
written into the firmware does not match.
(
b
)
F I R M E R R O R
• Please check the
destination-resistors
( R773/R776, HDMI
B'D).
• Please write the
firmware of correct
distination.
w
DIR NG
No response from DIR D I R E R R O R 0 1
• Please check DIR
（ IC21, HDMI B'D) and
arroud circuits.
e
DSP NG
When DSP code boot is performed, the
DSP FLAG0 port does not change to "H"
even if DSP reset is executed.
D S P E R R O R 0 1
• Please check DSP
（ U8, HDMI B'D) and
arroud circuits.
Before DSP command is issued, the DSP
BUSY port does not change to "L".
s
D S P E R R O R 0 2
When DSP data read is performed,
executing WRITE="L" does not result in
ACK="H".
D S P E R R O R 0 3
When DSP data read is performed,
executing REQ="L" does not result in
ACK="L".
D S P E R R O R 0 4
When DSP data writing is performed,
executing WRITE="H" does not result in
ACK="H".
D S P E R R O R 0 5
When DSP data writing is performed,
executing REQ="L" does not result in
ACK="L".
D S P E R R O R 0 6
r
EEPROM NG
Error occurs in EEPROM checksum.(*** is
a block address number.)
E 2 P R O M E R R * * *
t
Both DSP /
EEPROM OK
(No error display, version display only)
Status FL Display
b
The written Firmware and product settings
(model name, brand name, destination)
are compared. If Firmware that is not
designed for this product is written,▲ is
displayed in the first column, as shown on
the right.
– M a i n : * * * * * * * *
– D S P
: * * . * *
– A u d i o P L D : * * . * *
– O S D
: * * * * * * * *