Display Provided When Self-Diagnostic Function Started; History Of Protection Function - Yamaha NS-BP300 Service Manual

● Display provided when Self-Diagnostic Function started
The FL display of this unit displays the history of protection function data then the main menu (sub-menu FIRMWARE
VERSION/DESTINATION of main menu No. 1 VER/DEST/SUM) a few seconds later.
When there is no history of protection function:
Opening message
1 . V E R : x x x / G
When there is a history of protection function:
When there is a history of protection function due to abnormal voltage in the power supply section.
For details of protection functions, refer to the main menu No. 4-1 PS1 / 4-2 PS2.
When there is a history of protection function due to abnormal DC output from the amplifier.
For details of protection functions, refer to the main menu No. 4-3 DC.
When there is a history of protection function due to abnormal temperature.
For details of protection functions, refer to the main menu No. 4-4 THM.
● History of protection function
When the protection function has worked, its history is stored in memory with a backup. Even if no abnormality is
noted while servicing the unit, an abnormality which has occurred previously can be defined as long as the backup
data has been stored.
The history of the protection function will be initialized when self-diagnostic function is cancelled by selecting No. 3
PRESET RSRV (Memory initialized) / No. 5 PROTECTION HISTORY (History reset) or when the backup data is erased.
After a few seconds
Main menu display
1 . V E R : x x x / G
P S 1 x x x
A/D conversion value of voltage
D C x x x
A/D conversion value of voltage
T H M x x x
A/D conversion value of voltage
R-840/NS-BP300
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