Marantz SR5012 Service Manual page 134

Condition States
This error is displayed if there is no response from the
r
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.
t
Setting WRITE to "Lo" does not set ACK to "Hi" during
DSP NG
DSP data reading.
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
y
EEPROM NG a block address number).
Display
L1
DIR
L2
ERROR
L3
01
L1
DSP
L2
ERROR
L3
01
L3
02
L3
03
L3
04
L3
05
L3
06
L1
BACKUP
L2
ERROR
L3
***
134
TROUBLE SHOOTING
• Check the DIR (U1040, DIGITAL PCB)
and surrounding circuits.
• Check the DSP (U1073, DIGITAL PCB)
and surrounding circuits.