Psr-S950 Test Program - Yamaha PSR-S750 Service Manual

PSR-S950 TEST PROGRAM

If you execute Test No. 47 Factory Set, setting data and user data will be lost. Be sure to save these
*
data for backup in advance.
1 Measurement Conditions
1-1: Measuring Instruments
· Level meter (with a JIS-C fi lter).
· Frequency counter, which can detect thousandth value or more
· Oscilloscope
* Input impedance of the measuring instrument should be 1 MΩ or more.
* Connect a load resistor of 33 Ω and measure at the [PHONES] jack using stereo plugs unless otherwise specifi ed.
1-2: Jig
Foot controller (FC7), MIDI cable, USB cable, USB storage device (USB memory, etc.), Display monitor, Microphone
2 Starting up the test program
Turn on the power switch while pressing and holding the [C#2], [F2], and [G#2] on the lower keyboard (C#2 major code).
2-1: How to carry out tests
1) "TEST" will appear on the LCD when the test program starts up.
2) Go to item choosing mode with [TEMPO + ]/[TEMPO - ] button or [Data entry] dial.
(If the [Data entry] dial is turned counterclockwise at the head of items (Test 1), the last item (Test 48) will be selected. If
the [Data entry] dial is turned clockwise at the last item (Test 48), the head of items (Test 1) will be selected.
3) Press the [START/STOP] button to execute a test.
● If the test result is OK:
When the test result is OK, an asterisk " ＊ " will be displayed at the head so that you can see later if it has already been
checked.
If the result is OK, return to the selection screen with the [START/STOP] button.
● If the test result is NG:
If the result is NG, press the [DEMO] button or lowest key on the keyboard to return to the selection display.
POWER SWITCH button
[TEMPO +/-] button
[DEMO] button
[TAB ] button [Data entry] encoder
[START/STOP] button
PSR-S750/PSR-S950
63