Yamaha SilentPiano U1-Silent Руководство по эксплуатации - Страница 27

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•TEST MODE

Test mode has two functions that are sensor test and tone generator version check.

The keys that sound unusually or nothing in the STEP 3 need to be checked by this mode.

TEST MODE 1

Hold A,B,C (1,3,4 keys) simultaneously and turn on the power until it clicks, then release keys.

When a key is depressed, the 4 different beeps (approx. K1/2.7 mm, K2/4.5 mm, K3/6.3 mm, K4/8.1 mm)

tell the sensing conditions in 10 mm key depth stroke.

When K1 beeps too early --- Key leveling is too low or Key sensor is too high.

When K4 beeps too late or nothing --- Key leveling is too high or Key sensor is too low.

(Refer to the former page bottom for the acoustic standard.)

The correct sensor height is 4.2 mm (+1 mm / -1 mm) between sensor top and black key bottom

when the black key is fully depressed. (Fig. 7)

Fig. 7

The key sensor has 4 height adjustment screws at base end, 30 key, 58 key and treble end. Then key

sensor measurement on the next page is recommended.

Check STEP 3 finally.

If the pedal sustain functions (right pedal) incorrectly in STEP 3, it can be inspected with 3 steps of

pedal beeps by this test mode. Check the first beep sounds when the pedal goes down 1 mm and the

3rd beep must sound before its stroke end. The adjustment is done by the VR adjuster on the main

board (MN board) with a small flat screw driver. (Fig. 8)

The soft / left pedal has a leaf sensor and it should give the beep when the hammer rail has moved

2-3 mm from it's rest position. The adjustment is done by the screw on the sensor bracket. (Fig. 9)

Fig. 8

V R

4.2mm

Fig. 9

VR adjuster

SILENT SB SERIES

10mm