Error Display - Marantz NR1508 Service Manual

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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, q.
Condition
States
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 infor-
q
mation does not match.
Firm Check
NG
" ▲ " is displayed as the first character if the firmware
is not correct (see the illustrations on the right).
This error is displayed if there is no response from the
w
DIR NG
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 "Hi" during
DSP data reading.
e
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 EEPROM(*** is
r
EEPROM NG
a block address number).
Display
FIRM ERROR
M:*************
DSP
:**.**
Audio PLD:**.**
GUI
:********
DIR ERROR 01
DSP ERROR 01
DSP ERROR 02
DSP ERROR 03
DSP ERROR 04
DSP ERROR 05
DSP ERROR 06
BACKUP ERROR
110
TROUBLE SHOOTING
• Check the resistor for setting the
region(R1524 / 1525 DIGITAL PCB).
• Write the firmware for the correct
region.
• Check the DIR (U1040, DIGITAL PCB)
and surrounding circuits.
• Check the DSP (U1073, DIGITAL PCB)
and surrounding circuits.

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