Yamaha U3-SILENT Instrukcja serwisowa - Strona 29

Przeglądaj online lub pobierz pdf Instrukcja serwisowa dla Instrument muzyczny Yamaha U3-SILENT. Yamaha U3-SILENT 49 stron.

•CONFIRM THE SYMPTOMS

In order to get more information or replacing parts about these models, Yamaha service desk reqires the correct model

name and serial number. (Sometimes electorical serial number and the sensor or tone generator version.) Refer to the

sticker on the bottom of the switch box under the keybed. (Fig. 10)

The sensor board and the tone generator version will be shown by using TEST MODE 2.

TEST MODE 2

Hold A#, C#, D# (2, 5, 7 keys) simultaneously and

turn on the power unitl it clicks, then release keys.

The number of notes show the versions.

Sensor version: An ascending scale in C major, starting on the lowest C.

Sensor Version: An descending scale in C major, starting on the highest C.

• GRAY-SCALE KEY SHUTTER

Shutter base is not glued and can be removed with a pliers

• DIP SWITCH ON MN BOARD

Silent pianos include a 4-bit DIP-switch on the MN board. During normal use the switch bits (SW1 to SW4) are

generally all set to OFF, but during servicing or maintenance you can use them to execute function checks as

described below. Please turn power OFF before changing the DIP-switch settings, and then turn power back ON to

activate the new settings.

SW1

Always OFF

SW2

SENSOR TEST MODE

SW2 + SW3

DEMO PEFORMANCE

SW4

Always OFF

Fig. 10

(Ex. "Do" and "Re" mean version 2)

(Ex. "Do" and "Si" mean version 2)

How to replace shutter and shutter base

Fig. 11

No use

Forces the silent piano into Sensor Test mode.

Use this feature if for some reason you are unable start up test mode

using the keyboard.

Starts demo playback.

Allows you to check the state of the tone-generator. (Operation is not

affected by the sensors.)

No use

Key Shutter (V7978300)

SILENT SB SERIES