Yamaha DRX-2 Service Manual page 23

Nucleus Name DS_BROM_WriteRead
Nucleus Number 201
Description Check whether the Boot EEPROM can be written to and read from
Technical -
-
-
Execution Time Less than 1 second.
User Input None
Error Number
20100
20101
20102
20103
20104
20105
20106
20107
Example DS:> 201
020100:
Test OK @
NVRAM
Nucleus Name DS_NVRAM_Communication
Nucleus Number 300
Description Check the communication between the IIC controller of the Chrysalis and the EEPROM
Technical -
-
Execution Time Less than 1 second.
User Input None
Error Number
30000
30001
30002
30003
30004
30005
Example DS:> 300
030000:
Test OK @
Initialise IIC
Write something to the eeprom
Read from the same location and check whether it is the same as written
Description
The write-read test succeeded
The write-read test failed
An IIC-bus error occurred
There was a timeout reading the device
The IIC bus was not accessible
The IIC acknowledge was not received
Got unknown IIC bus error
The IIC bus initialisation failed
Initialise IIC
ReadfromalocationinNVRAM
Description
Something is properly read so the communication is OK
The IIC bus was not accessible
There was a timeout reading the device
The IIC acknowledge was not received
The communication with the device failed
The IIC bus initialisation failed
DRX-2
23