Starting Self-Diagnostic Function In The Protection Cancel Mode; Canceling Self-Diagnostic Function - Yamaha NS-BP300 Service Manual

R-840/NS-BP300
● Starting Self-Diagnostic Function
Turn the "BALANCE" knob counterclockwise fully and then while pressing the "PURE DIRECT" key of this unit as shown in
the figure below, press the " " (On/Standby) key to turn on the power.
The self-diagnostic function mode is activated.
" " (On/Standby) key
● Starting Self-diagnostic function in the protection cancel mode
If the protection function works and causes hindrance to trouble shoot, cancel the protection function as described below, and it
will be possible to enter the self-diagnostic function mode.
(The protection functions other than the PRI function will be disabled.)
Turn the "BALANCE" knob counterclockwise fully and then while pressing the "PURE DIRECT" key of this unit as shown in the
figure above, press the " " (On/Standby) key to turn on the power and keep pressing the "PURE DIRECT" key for 4 seconds or
longer.
The self-diagnostic function mode is activated with the protection functions disabled.
In this mode, the "SLEEP" segment of the FL display of this unit flashes to indicate that the mode is self-diagnostic function mode
with the protection functions disabled.
CAUTION!
Using this product with the protection function disabled may cause further damage to itself. Use special care when using
this mode.
● Canceling Self-diagnostic function
① Before canceling self-diagnostic function, execute setting for FACTORY PRESET of main menu No. 3 (Memory
initialization inhibited or Memory initialized).
*
In order to keep the user memory preserved, be sure to select PRESET INH (Memory initialization inhibited).
② Press the " " (On/Standby) key of this unit to turn off the power.
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Keys of this unit
Display
N O P R T
"BALANCE" knob
1 . V E R : x x x / G
Destination
Firmware version
"PURE DIRECT" key