Yamaha P-115B User Manual

SERVICE MANUAL
Copyright (c) Yamaha Corporation. All rights reserved. PDF ’15.02
■
CONTENTS
（目次）
SPECIFICATIONS
（総合仕様）
. . . . . . . . . . . . . . . . . . 3
PANEL LAYOUT
（パネルレイアウト）
. . . . . . . . . . . 5
CIRCUIT BOARD LAYOUT
（ユニットレイアウト）
. 7
DISASSEMBLY PROCEDURE
（分解手順）
. . . . . . . . 9
CIRCUIT BOARDS
（シート基板図）
. . . . . . . . . . . . 25
TEST PROGRAM
（テストプログラム）
. . . . . . . 40/50
DM CIRCUIT BOARD CHECK METHOD
（DM シートチェック方法）
. . . . . . . . . . . . . . . . . . . 60/62
SYSTEM BOOTING FLOWCHART
（起動フローチャート）
. . . . . . . . . . . . . . . . . . . . 64/66
CL
001909
DIGITAL PIANO
DATA BACKUP AND INITIALIZING
（バックアップと初期化）
. . . . . . . . . . . . . . . . . . . . . . . 68
USER DATA BACKUP
（ユーザーデータのバックアップ）
. . . . . . . . . . . . . . 70/71
PARTS LIST
BLOCK DIAGRAM
（ブロックダイアグラム）
WIRING DIAGRAM
（基板結線図）
CIRCUIT DIAGRAM
（回路図）
HAMAMATSU, JAPAN
P-115B/P-115WH/P-45B
P-115B
P-115WH
P-45B

Yamaha P-115B Specifications

General

Type	Digital Piano
Number of Keys	88
Key Action	Graded Hammer Standard (GHS)
Touch Sensitivity	Hard/Medium/Soft/Fixed
Polyphony	192
Voices	14
Sound Source	Pure CF Sound Engine
Reverb	4 types
Chorus	4 types
Intelligent Acoustic Control (IAC)	Yes
Damper Resonance	Yes
Dual/Layers	Yes
Split	Yes
Duo	Yes
Number of Preset Songs	50
Metronome	Yes
Tempo Range	5 - 280
Transpose	-6 to 0, 0 to +6
USB to Host	Yes
Amplifiers	7W x 2
Speakers	12 cm x 2
Auto Power Off	Yes
Recording	2 tracks, 1 song
Data Capacity	Approx. 100KB per song
Headphones	2 x 1/4" jacks
Power Supply	PA-150 AC adapter
Dimensions (W x D x H)	1, 326 x 295 x 153 mm
Weight	11.8 kg
Included Accessories	AC adapter, Music rest, Footswitch (FC5), Owner's Manual
Connectors	USB to Host, Headphones, Sustain Pedal

Summary

Specifications

Panel Layout

Circuit Board Layout

Disassembly Procedure

Disassembly of P-115B/P-115WH

Disassembly steps for P-115B/P-115WH models.

Disassembly of P-45B

Disassembly steps for P-45B model.

Disassembling the Keyboard Assembly

Detailed steps for disassembling the keyboard assembly.

Assembling the Keyboard Assembly

Detailed steps for assembling the keyboard assembly.

Circuit Boards

Test Program

Measurement Condition

Specifies conditions for performing tests, including environment and voltage.

Starting Test Mode

Procedure to enter the diagnostic test mode for the instrument.

Test Procedure

How to execute each test item and navigate test modes.

Test Result

How test outcomes are indicated via sound.

Test Items (Table 1)

Lists specific test items, keys, functions, and judgment criteria.

Factory Set

Initializes all backup areas to restore factory default settings.

Test Mode Exit

Exits test mode and performs system reset.

DM Circuit Board Check Method

System Booting Flowchart

Data Backup and Initializing

User Data Backup

Parts List

Overall Assembly

Lists parts for the overall assembly of the instrument.

GHL Keyboard Assembly

Lists parts for the GHL keyboard assembly.

Electrical Parts

Lists electrical components and their part numbers.

Block Diagram

P-115B/P-115WH

High-level block diagram for P-115B/P-115WH models.

P-45B

High-level block diagram for P-45B model.

Wiring Diagram

P-115B/P-115WH

Wiring diagram for P-115B/P-115WH models.

P-45B

Wiring diagram for P-45B model.

Circuit Diagram

P-115B/P-115WH DM 001

Circuit diagram for DM board (001) of P-115B/P-115WH.

P-115B/P-115WH DM 002

Circuit diagram for DM board (002) of P-115B/P-115WH.

P-115B/P-115WH PNJK (HP, JK, PN1, PN2)

Circuit diagram for PNJK, HP, JK, PN1, PN2 boards of P-115B/P-115WH.

P-115B/P-115WH P-45B GHL88H

Circuit diagram for GHL88H board (P-115B/P-115WH/P-45B).

P-115B/P-115WH P-45B GHL88L

Circuit diagram for GHL88L board (P-115B/P-115WH/P-45B).

P-115B/P-115WH P-45B GHL88M

Circuit diagram for GHL88M board (P-115B/P-115WH/P-45B).

P-45B DM

Circuit diagram for DM board of P-45B.

P-45B PNJK (JK, PN)

Circuit diagram for PNJK and PN boards of P-45B.