Yamaha YSP-1 Service Manual page 21

• Starting DIAG
To activate the DIAG function, press the "STANDBY/ON"
key of the remote controller while pressing the keys of the
main unit as shown below at the same time.
• Starting DIAG in the protection cancel mode
If the protection function works and causes hindrance to
trouble diagnosis, cancel the protection function as
described below, and it will be possible to enter the DIAG
mode.
Press the "STANDBY/ON" key while simultaneously
pressing those two keys indicated in the figure above. At
this time, keep pressing those two keys for 3 seconds or
longer.
In this mode, the "SLEEP" segment of the FL display of the
main unit flashes to indicate that the mode is DIAG mode
with the protection functions disabled.
CAUTION!
Using this product with the protection function disabled
may cause damage to itself. Use special care for this
point when using this mode.
• Canceling DIAG
[1] Before canceling DIAG, execute setting for PRESET of
DIAG menu No.6 (Memory initialization inhibited or
Memory initialized).
* In order to keep the user memory stored, be sure to
select PRESET INHIBIT (Memory initialization
inhibited). Any protection history will remain in
memory.
[2] Turn off the power by pressing the "STANDBY/ON"
key of the main unit or the "STANDBY" key of the
remote controller.
Keys of main unit
Turn on the power while pressing these keys.
YSP-1
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