Sony DNW-A75 Maintenance Manual page 89

ERROR-97 SV NV-RAM ERROR
(SV NV-RAM)
Description: The abnormal operation of an NV-RAM (MS-58 board) for the servo system was
detected.
Detecting condition: When the checksum of NV-RAM data does not coincide during activation.
Sub error message: None
Possible cause: NV-RAM (IC9 on MS-58 board) trouble
Protecting operation: Enters the protection mode.
ERROR-98 RF NV-RAM ERROR
(RF NV-RAM ERROR)
Description: The abnormal operation of an NV-RAM (EQ-75, DM-89, or TBC-23A board)
for RF system was detected.
Sub error messages and Detecting conditions:
EQ:
DM: When the error occurs in an NV-RAM (IC908 on DM-89 board) during
TBC: When the error occurs in an NV-RAM (IC200 on TBC-23A board) during
Possible causes: Trouble of an NV-RAM indicated by sub error message
Protecting operation: None
DNW-A75/A75P
When the error occurs in an NV-RAM (IC900 on EQ-75 board) during
the data write or read.
the data write or read.
the data write or read.
3-2. Details of Error Messages
3-19