Yamaha PSR-F50 Servis Kılavuzu - Sayfa 17

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■ TEST PROGRAM

* If the test number 60 "Factory Set" is executed, the data already set will be lost.

Preparations

1) Use an AC adaptor PA-3C or PA-130A.

2) Measuring device: Frequency counter, which can detect thousandth value or more, Level meter (with JIS-C ﬁlter), Oscilloscope

* Input impedance of the measuring device should be 1 MΩ or more.

3) Terminal condition:

Use a stereo plug and connect a load resistor of 33 Ω to the [PHONES/OUTPUT] jack for measurement unless

otherwise speciﬁed.

4) Controller settings

Initial setting when the power is turned on

Starting up the test program

Manual mode

While holding down the keys [C#2], [F2] and [G#2] simultaneously, press the [STANDBY/ON] switch

Auto mode

While holding down the keys [C#3], [F3] and [G#3] simultaneously, press the [STANDBY/ON] switch.

Executed sequentially from [1] to [7] of auto mode test item.

Test procedure

Manual mode

1) When the test program is started, " TST " will be displayed on the 7-segment LED.

2) Press the [Tenkey –] or [Tenkey +] button to select a test program item.

3) Press the [START/STOP] button to execute the test.

If the result is OK or test item is completed, press the [START/STOP] button again to return to the item selection display.

Press the [Tenkey –] or [Tenkey +] button to select the next test item.

In the acceptable selection screen, each character of the item number will be followed by dot "." on the 7-segment LED,

so that you can see later if it has already been checked.

If the result is NG, press the [SONG/STYLE] button or the lowest key (white key C1) to return to the item selection display.

Auto mode

The operation method follows a manual mode.

PSR-F50