Yamaha psr e443

Page 1

I CONTENTS (E R)

SPECIFICATIONS (fiéiflfi) .......................
PANEL LAYOUT (Kim/4 7-7 I)
DISASSEMBLY PROCEDURE (fiflflfi)
LSI PIN DESCRIPTION (LSI fiaflfiafiifi),
CIRCUIT BOARDS (>- LEW.) ................
DMLCD Circuit Board Test Method

(DMLCD Circuit Board 9- 17 773533) ............
TEST PROGRAM (ix I~ 712! 75A) ..

30/34

Products names are as follOWS- BACKUP (I\y 77v 7") ............... 38/39
(fiaaiwm; 5 Ct: U it, ) INITIALIZATION (191113112) .............................. ,...38/39
SYSTEM BOOTING FLOW CHART

F°r Japanese market GENE) (GAEEJnn-J-v- I~) .............................................. 40/41
PORTRTOI'IE PARTS LIST

_. BLOCK DIAGRAM (7u~y7fir775A)
F°r °Verseas market (figifi £1) : CIRCUIT BOARD LAYOUT & WIRING
DIGITAL KEYBOARD (1:7 |~|/f7'7h&$fifil>

OVERALL CIRCUIT DIAGRAM mama.)

.YAMAHA
PK .AMAMATSU, JAPAN

Copyrighi (5) Yamaha Corporation. All rights reserved. PDF (fldICD 14.02

Page 2

PSR-E443

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 theretore not been restated.

WARNING : Failure to iollow appropriate service and saiety procedures when servicing this product may result in personal in'ury,
destruction of expensive components and failure of the product to perform as specified. For these reasons, we a vise
all Yamaha product owners that all service required should be periormed by an authorized Yamaha Retailer or the

appointed service representative.

IMPORTANT :

This presentation or sale of this manual to any individual or firm does not constitute authorization certification,
recognition oi any applicable technical capabilities, or establish a principal-agent relationship of any form.

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. 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 electricit your_body may have accumulated
by grounding yourselt to the ground bus In the unit (heavy gauge black Wires connec to this bus.)

IMPORTANT :

Turn the unit OFF during disassembiy and parts replacement. Recheck fl work before you apply power to the unit.

WARNING: This product contains chemicals known to the State of California to cause cancer, or birth detects or other reproductive harm.
DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHAT SO EVER!

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

It you come in contact with solder or components located inside the enclosure ot this product, wash your hands betore handling food.

IWARNING

Components having special characteristics are marked & and must be replaced with parts having specification equal to those
originally installed.

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I SAVING DATA (F-9

Be sure to
perform it

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.

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