Yamaha spx990 service manual

Page 2

SPX990

/

IMPORTANT NOTICE

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 specifically Yamaha
Products, are already known and understood by the users, and have therefore not been restated

WARNING: 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 specified. For these reasons, we advise all Yamaha product own-
ers that all service required should be performed by an authorized Yamaha Retailer or
the appointed service representative

IMPORTANT: The presentation or sale of this manual to any individual or firm does not constiute authori-
zation, certification, recognition of any applicable technical capabilities, or establish a
principle-agent relationship of any form.

The data provided is believed to be accurate and applicable to the unitls) indicated on the cover The research,
engineering, and service departments of Yamaha are continually striving to improve Yamaha products
Modifications are, therefore, inevitable and changes in specification are subject to change without notice
or obligation to retrofit Should any discrepancy appear to exist, please contact the distributors Service
Division

WARNING: Static discharges can destroy expensive components. Discharge any static electricity
your body may have accumulatedt by grounding yourself to ground buss in the unit (heavy
gauge black wires connect to this buss)

IMPORTANT: Turn the unit OFF during disassembly and pans replacement Recheck alwork before
you apply power to the unit,

This product uses a lithium battery for memory backvup

WARNING: Lithium batteries are dangerous because they can be exploded by improper handling, 0b-
serve the following precautions when handling or replacing lithium batteries

' Leave lithium battery replacement to qualified service personnel

0 Always replace with batteries of the same type.

' When installing on the PC board, solder using the connection terminals provided on the battery cells
Never solder directly to the cells. Perform the soldering as quickly as possible

Never reverse the battery polarities when installing

Do not short the batteries

Do not attempt to recharge these batteries.

Do not disassemble the batteries

Never heat batteries or throw them into fire

ADVARSEL!
Lithumbatteri. Eksplosionsfare,
Udskiftning ma kun foretages af en sagkyndig. og som beskrevet i servicemanualen

WARNING: CHEMICAL CONTENT NOTICE!

The solder used in the production of this product contains LEAD. In addition, other electrical/
electronic and/or plastic (where applicable) components may also contain traces of chemicals found
by the California Health and Welfare Agency (and possibly other entities) to cause cancer and/or birth
defects or other reproductive harm,

DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH
FOR ANY REASON WHAT SO EVERl

Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale
solder fumes or expose eyes to solder/flux vaporl.

If you come in contact with solder or components located inside the enclosure of this product,
wash your hands before handling food