Yamaha YPT-370 Service-Handbuch - Seite 23

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TEST PROGRAM

Caution:

▪

The Test No.065 "Factory Reset" will delete all setup data (included the data that the customer has purchased). Be sure to save

the important data to a computer via Musicsoft Downloader software, or tell this to the customer in advance.

Measurement conditions

1-1.

Environment

Perform testing under following conditions.

▪ Ordinary temperature (5 to 40°C)

▪ Ordinary humidity (20 to 90 %)

If the test results deviate from the test standard range, however, re-test under such conditions as the ordinary temperature (5 to

40°C) and ordinary humidity (30 to 90 % of relative humidity).

1-2.

Power supply

Use an AC adaptor: PA-130, PA-130B or PA-130U

1-3.

Measuring instruments

▪ Frequency counter (capable of measuring to three or

more decimal places)

▪ Level meter

▪ Oscilloscope

* Use instruments with an input impedance of 1 MΩ or more.

1-4.

Test jigs

▪ Foot switch (FC-4A or FC5)

▪ Oscillator

▪ Stereo mini-plug cable

1-5.

Jack connection state

▪ [PHONES/OUTPUT] jack: Install a measuring instrument (L, R ch: 33 Ω load)

▪ [SUSTAIN] jack: Connect a Foot switch before turning the power ON

1-6.

Instrument settings

▪ MASTER VOLUME: MAX

▪ Other settings: the initial setup at turning the power ON.

(for pitch measurement)

(for output level measurement)

(for measuring popping noise)

(for inspecting [SUSTAIN] jack)

(for input of sinusoidal waveform to [AUX IN] jack)

(for inspecting [AUX IN] jack)

PSR-E373/YPT-370