Starting Self-Diagnostic Function; Canceling Self-Diagnostic Function - Yamaha YHT-196 Service Manual

HTR-2064/NS-B20/NS-C20/NS-SWP20
● Starting Self-Diagnostic Function
While pressing the "TONE CONTROL" and "STRAIGHT" keys, press the " " (Power) key to turn on the power.
The self-diagnostic function mode is activated.
(Power)
● Starting Self-Diagnostic Function in the protection cancel mode
If the protection function works and causes hindrance to troubleshooting, cancel the protection function by the procedure
below, and it will be possible to enter the self-diagnostic function mode.
(The protection functions other than the excess current detect function will be disabled.)
While pressing the "TONE CONTROL" and "STRAIGHT" keys, press the " " (Power) key to turn on the power and keep
pressing those 2 keys and the " " (Power) key for 3 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 flashes to indicate that the mode is self-diagnostic function mode with
the protection functions disabled.
CAUTION!
Using this unit with the protection function disabled may cause further damage to this unit. Use special care for this point
when using this mode.
● Canceling Self-Diagnostic Function
1. Before canceling self-diagnostic function, execute setting for FACTORY PRESET of main menu No.24. (Memory
initialization inhibited or Memory initialized).
*
In order to keep the user memory preserved, be sure to select PRESET INHIBITED (Memory initialization inhibited).
2. Press the " " (Power) key to turn off the power.
26
Keys of this unit
While pressing these keys, turn on the power.