Denon AVR-4520, Руководство по обслуживанию

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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 first 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 first column displays ▼.
•
G U I : * * * * * * * *