Yamaha PSR-E473 Service Manual page 2

PSR-E473
This manual has been provided for the use of authorized Yamaha Retailers and their service personnel. It has been assumed that basic
service procedures inherent to the industry, and more speci cally Yamaha Products, are already known and understood by the users,
and have therefore not been restated.
WARNING :
IMPORTANT :
The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research engineering, and service
departments of Yamaha are continually striving to improve Yamaha products. Modi cations are, therefore, inevitable and changes in
speci cation are subject to change without notice or obligation to retro t. Should any discrepancy appear to exist, please contact the
distributor's Service Division.
WARNING :
IMPORTANT :
WARNING
Components having special characteristics are marked
originally installed.
SAVING DATA
Saving and backing up your data
Some data items are automatically saved as backup data in the internal memory even if you turn the power off. Saved
data may be lost due to malfunction or incorrect operation. Save important data to external device such as a computer.
Be sure to
perform it
2.SERVICE MANUAL
2
IMPORTANT NOTICE
Failure to follow appropriate service and safety procedures when servicing this product may result in personal injury,
destruction of expensive components and failure of the product to perform as speci ed. For these reasons, we advise
all Yamaha product owners that all service required should be performed by an authorized Yamaha Retailer or the
appointed service representative.
This presentation or sale of this manual to any individual or
recognition of any applicable technical capabilities, or establish a principal-agent relationship of any form.
Static discharges can destroy expensive components. Discharge any static electricity your body may have accumulated
by grounding yourself to the ground bus in the unit (heavy gauge black wires connect to this bus.)
Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power to the unit.
rm does not constitute authorization certi cation,
and must be replaced with parts having speci cation equal to those
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T R O P A
T O N T N
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