2
Modem/DSU Commands
2-121
6800-A2-GB31-20
January 1997
DATAPHONE II 2700 Series DSUs with active device failures (MD alerts) display one or more of
the following error messages:
•
RAM device M4 steady-state error.
•
RAM device M1 checksum error.
•
RAM device M2 checksum error.
•
DUART CC/DC channel power-up error.
•
DUART CC/DC channel steady-state error.
•
EEPROM error.
•
Transmitter LSI steady-state operation error.
•
LSI/CSU power-up 511 bit factory loop back error.
•
LSI/CSU power-up secondary channel loop back error.
•
LSI/CSU power-up message test factory loop back error.
•
Bus board test bit error.
•
Sanity timer power-up time-out error.
•
RAM device M3 power-up error.
•
RAM device M3 steady-state error.
•
RAM device M4 power-up error.
•
There are no device faults for this modem.