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Yamaha YPT-220 User Manual

Yamaha YPT-220
41 pages
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SERVICE MANUAL
HAMAMATSU, JAPAN
SERVICE MANUAL
PK
001827
Copyright (c) Yamaha Corporation. All rights reserved. PDF
&
’09.04
CONTENTS(目次)
SPECIFICATIONS(総合仕様) ........................................ 3/4
PANEL LAYOUT(パネルレイアウト) ................................ 5
CIRCUITBOARDLAYOUT&WIRING
(ユニットレイアウト & 結線図) .......................................... 7
BLOCK DIAGRAM(ブロックダイアグラム)..................... 8
DISASSEMBLYPROCEDURE(分解手順)....................... 9
LSIPINDESCRIPTION(LSI 端子機能表)....................... 15
ICBLOCKDIAGRAM(IC ブロック図)............................ 17
CIRCUIT BOARDS(シート基板図) ................................. 18
TESTPROGRAM(テストプログラム) ....................... 21/23
SYSTEMBOOTINGFLOWCHART
(起動フローチャート) .................................................. 25/26
MIDIIMPLEMENTATIONCHART
(MIDI インプリメンテーションチャート) ........................ 27
MIDIDATAFORMAT ........................................................ 28
PARTS LIST
OVERALLCIRCUITDIAGRAM(総回路図)
Products names are as follows.
商品は以下にな。)
For Japanese market(国内向け):
For overseas market(海外向け):
DIGITAL KEYBOARD
* YPT-220 is an overseas export model.
(YPT-220 は輸出専用モデルです。
PSR-E223
YPT-220

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Yamaha YPT-220 Specifications

General IconGeneral
Number of Keys61
Polyphony32
Voices375
Styles100
DisplayLCD
MIDIYes
Number of Preset Songs102
Amplifiers2.5W + 2.5W
Touch SensitivityNo
EffectsReverb, Chorus
Demo SongsYes
Weight4.5 kg
Speakers Size2 x 12 cm
Power SupplyPA-130 or batteries
ConnectionsHeadphones, Sustain Pedal

Summary

Specifications

Keyboards

Details about the 61 standard-size keys.

Panel Layout

Front Panel

Diagram and description of the instrument's front panel controls.

Rear Panel

Diagram and description of the instrument's rear panel connections.

Disassembly Procedure

Lower Case Assembly

Instructions for removing the lower case assembly.

DMLCD Circuit Board and LCD

Steps for removing the DMLCD circuit board and LCD.

PNAM Circuit Board Removal

Instructions for removing PNAM circuit boards (1/3, 2/3, 3/3).

Keyboard Assembly and Keys

Steps for disassembling the keyboard and removing keys.

LSI Pin Description

Circuit Boards

PNAM 2/3 Circuit Board

Detailed layout of the PNAM 2/3 circuit board.

PNAM 1/3 Circuit Board

Detailed layout of the PNAM 1/3 circuit board.

DMLCD Circuit Board

Detailed layout of the DMLCD circuit board.

Test Program

Starting up the Test Program

Procedure to initiate the test program.

Test procedure

Steps for executing test items and interpreting results.

MIDI Implementation Chart

MIDI Data Format

Upper Case Assembly

Lower Key Bed Assembly

Electrical Parts

Overall Circuit Diagram

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