Yamaha PSR-S770, Service Manual

Page: 39 / 110

39
PSR-S770/PSR-S970
2.■ Test■mode
2-1.■ Starting■Up■Test■mode
There are two methods to start up the Test mode.
Method■1
1) While pressing keys [C#2], [F2], [G#2] (C#2 major chord) simultaneously, turn on the [ ] (Standby/On) switch.
2) When Test mode started successfully, “
TEST ” is shown on the LCD.
Method■2
1) While pressing the buttons [PIANO], [STRINGS] and [DRUM KIT] simultaneously, turn on the [ ] (Standby/On) switch.
2) When Test mode started successfully, “
TEST
” is shown on the LCD.
[DEMO] button
[START/STOP] button
TEMPO [-]/[+] buttons
TAB [
<
]/[
>
] buttons
[DATA ENTRY] dial
[ ] (Standby/On) switch
2-2.■ Selection/execution■of■Test■items
1) Select an item with the TEMPO [-]/[+] buttons or [DATA ENTRY] dial.
* When selecting a test item, the first item (No. 001) can be switched to the last item (No. 083) by pressing the TEMPO [-] button
or turning the [DATA ENTRY] dial counterclockwise. Similarly, the last item (No. 083) can be returned to the first item (No. 001)
by pressing the TEMPO [+] button or turning the [DATA ENTRY] dial clockwise.
2) Press the [START/STOP] button to execute the test item. For details, refer to the explanation page for each Test Program
item.
2-3.■ If■the■test■result■shows■“OK”
To return to the display of test item selection, press the [START/STOP] button.
* Test item the result of which was OK is shown with an asterisk (
*
) at the left of the name.
2-4.■ If■the■test■result■shows■“NG”
To return to the display of test item selection, press the [DEMO] button or the lowest key.