Sony DNW-A75 Maintenance Manual page 87

ERROR-93 CPU INITIALIZE ERROR
(CPU INITIALIZE ERROR)
Description: Abnormality was detected in the communication between SV CPU (SS-83
board) and DT MPU or DRUM MPU (SS-83 board).
Sub error messages and Detecting conditions:
DT:
DRUM: When the communication with DRUM MPU (IC314 on SS-83 board)
Possible causes: DT:
DRUM: IC314 and its peripheral circuit on SS-83 board trouble
Protecting operation: Prohibits the cassette insertion.
ERROR-95 OTHERS NV-RAM ERROR
(OTHERS NV-RAM ERROR)
Description: The abnormal operation of an NV-RAM on RM-179 or RM-190 board was
detected.
Sub error message and Detecting condition:
REMOTE-2 DATA RESET: When the REMOTE-2 (50-pin) setting data in an
Possible cause: IC1 or IC2 on RM-179 board trouble
or
IC11 on RM-190 board trouble
Protecting operation: Resets the 50-pin parallel remote (REMOTE-2) setting data to the factory
setting.
DNW-A75/A75P
When the communication with DT MPU (IC2700 on SS-83 board) at
power-on is in abnormal state.
at power-on is in abnormal state.
IC2700 and its peripheral circuit on SS-83 board trouble
NV-RAM on RM-179/190 board is abnormal
and the setting data is reset.
3-2. Details of Error Messages
3-17