Yamaha Tyros4 Service Manual

This Yamaha Tyros4 service manual has been provided for the use of Yamaha authorized retailers and service personnel. It has been assumed that basic service procedures inherent to the industry, and more specifically to the Yamaha products, as they are known and understood by users and, therefore, have not been restated. Follow proper safety and service procedures when service of this product can result in personal injury, destruction of expensive components and product failure to operate as specified. For these reasons, we advise all owners of products Yamaha all required service must be performed by an authorized Yamaha dealer or designated service representative. This presentation or sale of this manual to any person or company does not constitute a certificate of authorization, recognition of any applicable technical capacity, or a principal-agent relationship in any way. It is believed that the data provided is accurate and applicable to the (s) unit (s) indicated (s) on the cover. Research Engineering and Yamaha service departments strive to continuously improve the Yamaha products. Therefore, the amendments are inevitable and changes in the specification are subject to change without notice or obligation of rehabilitation. If any discrepancy appears to be, please contact the Service Division of the Distributor.

Disassembly procedure Tyros4; If you turn the instrument or the unit of uppercase backward, prepare supporting materials and place the two final parts of the instrument or unit top box on supporting materials. During reassembly, reinstall the tape, cable bracket, cable GND and the ferrite core removed during disassembly, as they were prior to the extraction. When connecting the Jack, pay attention to not insert the wire in the opposite direction. 

Installation of a module of the Tyros4 optional flash memory expansion slot allows you to import Wave files on a hard disk drive or USB storage device, allowing you to create your own original voices, normal voices, and voices of the battery. (For information on the creation of original voices, see the Reference Manual in the website.) This section explains how to install an expansion module on the Tyros4. Before beginning the installation, turn off the Tyros4, and attached peripherals and disconnect them from the power outlet. The installation or removal of any device should start ONLY once the instrument (and optional hardware) return to normal room temperature. Then, remove all cables that connect the Tyros4 to other devices. (Leave the power cable connected during work may cause an electrical shock, let other cables connected to interfere with work). Be careful not to drop any screws in the interior of the instrument during installation (this can be avoided keeping the optional unit and the lid away from the instrument during the fixation). If this happens, be sure to remove the screws from the inside of the instrument before turning it on. Screws loose inside the instrument may cause malfunction or damage.

Table of contents Yamaha Tyros4 Service Manual

Specifications

Panel layout

Circuit board layout

Disassembly procedure

Installing the optional flash memory expansion module

LSI pin description

Circuit boards

Test program

Initial setting

Flash memory expansion module check

Formatting HDD

System reset

OS update

Initializing internet setup

Data backup 

Display messages

System Booting flowchart

Parts list

Block diagram 

Wiring

Overall circuit diagram

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