Marantz NR1506 /U1B Service Manual page 20

1.4. Error display
See the table below for descriptions of the displayed errors and countermeasures for these.
If multiple errors occur, only one item is displayed.
The priority order is w , e , r , t , q .
Condition
The model name, brand name and region
information written in the firmware are
compared to the region settings in the
PCB. This error is displayed if the informa-
tion does not match.
q
Firm Check
NG
" ▲ " or " ▼ " is displayed as the first char-
acter if the firmware is not correct (see the
illustrations on the right).
If the Main CPU version is not supported
w
by the GUI Serial Flash ," ▼ " is displayed
GUI Serial
as the first character of the GUI firmware
Flash NG
version.
This error is displayed if there is no re-
e
DIR NG sponse from the DIR.
The DSP FLAG0 port does not enter "Hi"
status while booting a DSP code even
after resetting DSP.
The DSP FLAG0 port does not enter "Hi"
status before issuing a DSP command.
Setting WRITE to "Lo" does not set ACK to
r
"Hi" during DSP data reading.
DSP NG
Setting REQ to "Lo" does not set ACK to
"Lo" during DSP data reading.
Setting WRITE to "Hi" does not set ACK to
"Hi" during DSP data writing.
Setting REQ to "Lo" does not set ACK to
"Lo" during DSP data writing.
An error occurred in a checksum of the
t
EEPROM NG EEPROM(*** is a block address number).
States Display
F I R M E R R O R
M a i n : * * * * * * * *
D S P
A u d i o P L D : * * . * *
G U I : * * * * * * * *
G U I V E R .
G U I : * * * * * * * *
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 * * *
20
TROUBLE SHOOTING
• Check the resistor
for setting the re-
gion(R1202 / R1206,
HDMI PCB).
: * * . * *
• Write the firmware for
the correct region.
E R R O R
• Check the firmware
version.
• Check the DIR (U1016,
HDMI PCB) and sur-
0 1
rounding circuits.
0 1
0 2
• Check the DSP (U1021,
0 3
HDMI PCB) and sur-
rounding circuits.
0 4
0 5
0 6