Denon AVR-4520CI Service Manual

28
Condition Status FL Display Trouble shooting
DSP3 NG
When DSP3 code boot is performed, the
DSP FLAG0 port does not change to "H"
even if DSP reset is executed.
D S P 3 E R R O R 0 1
• Please check DSP3
（
U301,
DSP B'D) and around
circuits.
Before DSP3 command is issued, the
DSP BUSY port does not change to "L".
D S P 3 E R R O R 0 2
When DSP3 data read is performed,
executing WRITE="L" does not result in
ACK="H".
D S P 3 E R R O R 0 3
When DSP3 data read is performed,
executing REQ="L" does not result in
ACK="L".
D S P 3 E R R O R 0 4
When DSP3 data writing is performed,
executing WRITE="H" does not result in
ACK="H".
D S P 3 E R R O R 0 5
When DSP3 data writing is performed,
executing REQ="L" does not result in
ACK="L".
D S P 3 E R R O R 0 6
i
E2PROM NG
Error occurs in E2PROM checksum.(*** is
a block address number.)
E 2 P R O M E R R * * *
Please check wait 8 seconds
after Power ON.
o
No error
ALL items of
①
to
⑧
are OK. (No error display, version display only)
Status FL Display
b
1
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 rst column, as shown on the right.
–
M a i n : * * . * *
–
S u b : * * * * * * * *
–
D S P 1 : * * . * *
–
D S P 2 : * * . * *
–
D S P 3 : * * . * *
–
A u d i o P L D : * * . * *
–
G U I : * * * * * * * *
b
2
When the version of Serial Flash in GUI
does not match the version of Main μcom,
the rst column displays ▼.
•
G U I : * * * * * * * *

Denon AVR-4520CI Specifications

General

Brand	Denon
Model	AVR-4520CI
Category	Receiver
Language	English