Yamaha PSR-E373 Service Manual

370

SERVICE MANUAL

PSR-E373 YPT-370

n CONTENTS

SPECIFICATIONS................................................................................... 3

PANEL LAYOUT...................................................................................... 5

CIRCUIT BOARD LAYOUT & WIRING.................................................... 7

BLOCK DIAGRAM................................................................................... 8

DISASSEMBLY PROCEDURE................................................................ 9

CIRCUIT BOARDS................................................................................ 16

DMLCD Circuit Board Check Method.................................................... 22

TEST PROGRAM.................................................................................. 23

BACKUP................................................................................................ 30

INITIALIZATION..................................................................................... 31

SYSTEM BOOTING FLOW CHART...................................................... 32

PARTS LIST OVERALL CIRCUIT DIAGRAM

001996

2020.09

-A0

PSR-E373/YPT-370

IMPORTANT NOTICE

This manual has been provided for the use of authorized Yamaha Ret ailers and t heir service personnel. It has been assumed that basic service procedures inherent to the industry, and more specically Yamaha Product s, are already known and understood by the users, and have theref ore not been restated.

WARNING : Failure to follow appropriate servi ce and safe ty procedures when serv icing this product may result in personal injury,

destruction of expensive components and failure of t he product t o perform as specied. For these reasons, we advise all Yamaha product owners that all service required should be performed by an aut horized Yamaha Retailer or the appointed service representative.

IMPORTANT :

This presentat ion or sale of this manual to any individual or rm does not constitu te authorizat ion certication, recognition of any applic able technical capabilit ies, or establish a principal-agent relationship of any form.

The data provided is believed to be accurate and applic able to the unit(s) indicated on the cover. The research engineering, and servi ce 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 Servic e Division.

WARNING : 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.)

IMPORTANT : Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power to the unit.

WARNING

Components having special characteristics are marked and must be replaced with parts having specication equal to those originally installed.

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.

SAVING DATA

1 . I M P O R T A N T N O T I C E

2.SERVICE MANUAL

SPECIFICATIONS

Product Name Digital Keyboard

Size/Weight

Dimensions (W x D x H)

945 mm x 369 mm x 118 mm

(37-3/16” x 14-1/2” x 4-5/8”)

Weight

4.6 kg (10 lb 2 oz)

(not including batteries)

Control Interface

Keyboard

16syeK fo rebmuN

dexiF ,draH ,muideM ,tfoSesnopseR hcuoT

Display

DCLepyT seYthgilkcaB

hsilgnEegaugnaL hsilgnEegaugnaLlenaP

Voices

Tone Generation

Tone Generation Technology

AWM Stereo Sampling

84).xam( ynohpyloP

Preset Number of Voices

622

(241 Panel Voices + 22 Drum

/SFX kits + 20 Arpeggio +

339 XGlite Voices)

etilGX/MGytilibitapmoC

Effects

Types

sepyt 83PSD

sepyt 21breveR sepyt 5surohC sepyt 6QE retsaM

Functions

seYlauD seYtilpS seYniatsuS

sepyt 62ynomraH

sepyt 051oiggeprA

seYrosserppuS ydoleM

)secioV etiL noitalucitrA repuS 11( seYnoitalucitrA

Accompaniment Styles

Preset

502selytS fo rebmuN

regnif itluM ,drohC tramSgniregniF

Style Control

ACMP ON/OFF, SYNC START, START/STOP, INTRO/ENDING/rit.,

MAIN/

AUTO FILL

01selytS lanretxE

Other Features

071esabataD cisuM

One Touch Setting (OTS)

Yes

)FFS( tamroF eliF elytSytilibitapmoC

Songs (MIDI)

Preset Number of Preset Songs

154

(including Touch Tutor: 10, Chord Study: 12, Chord Progression: 30)

Recording

5sgnoS fo rebmuN 2skcarT fo rebmuN

seton 000,01 .xorppAyticapaC ataD

Format

1 & 0 stamroF FMSkcabyalP

tamroF eliF lanigirOgnidroceR

Functions

Lesson

KEYS TO SUCCESS, Lesson 1–3 (Listening, Timing, Waiting),

rase Repeat, A-B Repeat, Chord Dictionary, Touch Tutor,

Chord Study, Chord Progression

oerets ,tib 61 ,zHk 1.44)TSOH OT BSU( oiduA BSU

Registration Memory

9snottuB fo rebmuN

Overall Controls

seYemonorteM

082–11egnaR opmeT

21+ ot 0 ,0 ot 21- esopsnarT

)stnemercni zH 2.0 .xorppa( zH 0.354–0.044–0.724gninuT

seYouD

)nottuB dnarG elbatroP( seYnottuB ONAIPsuoenallecsiM

Storage and Connectivity

BM 4.1 .xorppAyromeM lanretnIegarotS

Connecti

vity

V 21NI CD

Headphones/Output Standard stereo phone jack (PHONES/OUTPUT)

seYladeP niatsuS

)kcaj inim oeretS( seYNI XUA

seYTSOH OT BSU

Sound System

W 5.2 + W 5.2sreifilpmA

2 x mc 21srekaepS

PSR-E373/YPT-370

* The contents of this manual apply to the latest specications as of the publishing date. To obtain the latest manual, access the Yamaha

website then download the manual le. Since specications, equipment or separately sold accessories may not be the same in every locale, please check with your Yamaha dealer.

Power Supply

AC Adaptor

Users within U.S or Europe: PA-130 or an equivalent recommended

by Yamaha

Others: PA-3C,PA-130 or an equivalent recommended by Yamaha

Batteries

Six 1.

5 V “AA” size alkaline (LR6), manganese (R6) or

six 1.2 V “AA” size Ni-MH rechargeable batteries (HR6)

)rotpada CA 031-AP gnisu nehW( W 5noitpmusnoC rewoP

)tes eb nac emiT( seYffO rewoP otuA

Included Accessories

• Music rest

• Owner’s Manual

• AC adaptor *1 (PA-130 or an equivalent recommended by Yamaha)

• Online Member Product Registration

*1: May not be included depending on your particular area. Please check

with your Yamaha dealer.

Separately Sold Accessories (

May not be available depending on your area.)

• AC adaptor:

Users within U.S or Europe: PA-130 or an equivalent recommended by

Yamaha

Others: PA-3C, PA-130 or an equivalent recommended by Yamaha

• Keyboard stand: L-2C

• Headphones: HPH-50/HPH-100/HPH-150

• Footswitch: FC4A/FC5

PANEL LAYOUT

Front Panel

6C5C4C3C2C1C

Song ListStyle List Display Voice List

Music

Database List

• The illustrations and displays as shown in this manual are based on the PSR-E373.

NOTE

❶

❸

❷

❹

❻

❺

❼ ❽ ❾

❿

⓫ ⓬ ⓭ ⓮ ⓯

⓰ ⓱ ⓲

⓳

⓴ 󱢾 󱢿 󱣀 󱣁

󱣂 󱣃

󱣄 󱣅

󱣆

PSR-E373/YPT-370

[ ] (Standby/On) switch [MASTER VOLUME] dial [DEMO] button [METRONOME] button [TEMPO/TAP] button

PART [L] button [R] button

[REC TRACK 2] button [REC TRACK 1] button

[KEYS TO SUCCESS] button [PHRASE REPEAT] button [1 LISTENING 2 TIMING 3 WAITING] button

[A-B REPEAT] button [REW] button [FF] button [PAUSE] button

[ACMP ON/OFF] button [INTRO/ENDING/rit.] button [MAIN/AUTO FILL] button [SYNC START] button

[START/STOP] button [REC] button [VOICE] button [SONG] button [STYLE] button Number buttons [0]–[9], [+/YES], [-/NO] [PORTABLE GRAND] button [DSP] button [A

RTICULATION] button [REGIST MEMORY] button [FUNCTION] button [MUSIC DATABASE] button [DUAL] button [SPLIT] button [HARMONY/ARPEGGIO] button Drum illustrations for the Drum Kit

Each of these indicates the drum or percussion instrument assigned to the corresponding key for “Standard Kit 1.”

[SUSTAIN] jack [PHONES/OUTPUT] jack [AUX IN] jack [USB TO HOST] terminal*

DC IN jack

In the Lesson mode

In the Recording mode

In the Song mode

In the Style mode

Rear Panel

❶ ❷

❸ ❹ ❺

❻

❼ ❽

❾

❿ ⓫ ⓬ ⓭

⓮ ⓯

⓰ ⓱ ⓲ ⓳ ⓴ 󱢾 󱢿 󱣀 󱣁 󱣂 󱣃 󱣄

󱣅 󱣆

󱣇 󱣈 󱣉

󱣊 󱣋

󱣇 󱣈

󱣉

󱣊

󱣋

CIRCUIT BOARD LAYOUT & WIRING

DMLCD

PNL

MVR

PNR

811 56 12 7

61L-MK 61H-MK

DC-IN

4 13

1 23

WH050

WH040

WH030

WH020

WH010

500

350

250

230

220

210

(ZW76710)

(ZA17230)

(ZA18010)

(ZA18500)

(ZA17370)

(ZW81430)

(WE14140)

(VDM2390)

(ZW81320)

(ZZ74010)

(ZW81310)

(ZZ74000)

(ZW81300)

(ZZ73990)

DMLCD - CN302

MVR(PNL) - CN301

DMLCD - CN301

DMLCD - CN801

DC-IN(PNL) - CN102

PNR - CN202

PNL - CN107

DMLCD - CN303

PNL - CN103

DMLCD - CN501

DMLCD - CN502

15P L=100

3P L=100

8P L=50

11P L=75

4P L=50

2P L=165

2P L=70

3P L=240

7P L=550

5P L=620

PNR - CN201

PNL - CN105

PNL - CN106

PNL - CN104

PNL - CN101

61L-MK - CN05

61H-MK - CN02

SP1

BATT

MK13

MK12

MK11 61H-MK - CN01 DMLCD - CN503 12P L=550*1

*2 *2 *2 *2 *3 *3 *3

*5 *6 *7 *7 *8 *8 *8

*9 *4 *4 *4 *8 *4 *4

*4*1

*1 *1 *1 *1 *3 *1 *1

No.

9 10

UPPER CASE ASSEMBLY

LOWER CASE ASSEMBLY

SPEAKER (L) SPEAKER (R)

Destination RemarksUnit Name Location Parts No.

BACK-LIGHT ASSEMBLY

BATTERY TERMINAL (+/-)

Connection Method

*1: Installation *2: Manual soldering *3: Dip soldering

Connection Direction

Connector

Assembly

Table Wiring assemblies list

PNL and PNR CIRCUIT BOARD

LOWER CASE ASSEMBLY

UPPER CASE ASSEMBLY

SPEAKER R

SPEAKER L

*4: Edge mark is adjusted to Pin 1 mark ( mark). *5: Red wire is connected to (+) terminal. Black wire is

connected to (-) terminal. *6: Eage mark is adjusted to + mark. *7: Red wire is connected to (+) terminal. White wire is

connected to (-) terminal. *8: Connected *9: Red wire is adjusted to Pin 1 mark ( mark).

PSR-E373/YPT-370

* The parts with “( )” in “Part No.” are not available as spare parts.

Caution:

▪ Be sure to attach the removed filament tape just as it was before removal.

PSR-E373/YPT-370

DMLCD

LCD

PNR (PN 2/4)

PNL (PN 1/4)

DC-IN

(PN 4/4)

MVR

(PN 3/4)

CPU

SWX03S

RESONATOR QUARTZ

16.9344MHz

F Tolerance±50PPM

SDO1,SYSCLK

BCLK,WCLK

RESONATOR QUARTZ

48MHz

F Tolerance±50PPM

N[11-16],N[21-26]

ADC 24bit

PCM1803A

AUXIN-IN

PHONES

(Prog/WAV/

Backup)

SERIAL

NOR

512Mbit

SDRAM

256Mbit

D.AMP

YDA176

FUNC_DP, FUNC_DM

VBUS, PULLUP_ENB

Filter

DAC 24bit

AK4430

+3.3D +5A

AUX IN

AUXIN-IN

RC Filter

/HP-MUTE

HP-IN

SDI,SYSCLK

BCLK,WCLK

SDO0,SYSCLK

BCLK,WCLK

/DAMP-MUTE

MVR

DECORDER

74LV138A

DECORDER

74LV138A

61KEY (16NS)

TOUCH RESPONSE

To Host

Full speed

SUSTAIN

GP_IN7

GP_INOUT24-31

MA0-12

MD0-15

WEN,RCLK

LDQM,UDQM,

RASN,CASN,

CS2N

GP_INOUT0-7

RS,ENB

SDI,SDO0,SDO1

SYSCK

BCLK,WCLK

RESN

KYB01-04

KYN11-16

KYN21-26

/PSWI

PSWO

AN0

HeartBeat

GP_INOUT35

GP_OUT1

/MUTE GP_INOUT34

GP_INOUT32/DAMP-MUTE

/DETECT-CHECK GP_INOUT33

+HP

CN503

(12P)

CN501

(7P)

CN502

(5P)

/PSWI

PSWO

CN1

(12P)

CN2

(5P)

CN5

(7P)

PVDD

+5A

+3.3D

GP_OUT5

/ADC_IC

FUNC_DP

FUNC_DM

VBUS

PULLUP_ENB

MUTE

Circuit

+3.3A

AN1

/HP-MUTE

UCLK_I

UCLK_O

+3.3D

SUSTAIN

Battery

Monitor

STANDBY/ON

*More than 400ms

/PSWI

PSWO

MVR

+3.3D

“AA”size,LR6 or equivalent batteries

Battery 1.5×6

SUSTAIN

PA[0-7]

PB[0-2]

RESET

+2.9V 54.8ms

+5D

PA[0-7]

PB[0-2]

PA[0-2]

PB[3-7]

PA[0-2]

PB[3-7]

AC adaptor

PA-130B or equivalent

DC-IN

MASTER

VOLUME

B 10K

BACK LIGHT

LED:1PC(WHITE)

LCD

DISPLAY

PA[0-7]

RS,ENB

+5D

COM[1-16]

SEG[1-40]

SPR+

SPR-

SPL+

SPL-

SPR+

SPR-

Lch

SPEAKER

Sustain

Rch

SW MATRIX

(

SW24 PCS )

SW MATRIX

( SW14 PCS )

SPEAKER

*1 correspond to 1Gbit

SPL+

SPL-

SPL+

SPL-

SPR+

SPR-

LCD

DRIVER

Error

Detection

HP-IN

/MUTE

/DETECT

HeartBeat

/DAMP-MUTE

/DETECT-CHECK

/HP-MUTE

IO00-IO03

CS0N, CLK0

WRH

WRL

WRB

/RES

CS52WRN

CS53WRN

GP_OUT7

CS51WRN

+3.3D

+5D

+3.3A

+3.3V

REGULATOR

+5A

+3.3D

+5V

DC/DC

Ripple

Filter

PVDD

+HP

+5L

Internal Clock : 135.4752MHz

Master Clock : 67.7376MHz

(TYPE-B)

(stereo mini)

ADC/DAC/D.AMP

Audio Format:I2S

24bit 44.1kHz

+3.3D +3.3D

B[09-13]

B[01-08]

B[07-11]

B[01-07]

N[11-16],

N[21-26]

KYB[01-04]

6 /12cm

CN303 (2P)

CN201 (15P)

CN202

(2P)

CN302 (15P)

CN301 (8P)

CN106 (8P)

CN107

(2P)

CN104 (11P)

CN105

(3P)

CN301

(3P)

CN801 (11P)

CN103 (3P)

CN102

(4P)

CN101

(4P)

CN401

JK701

JK201

VR301

JK101

FZ101

TR103

TR102

SW101

IC001

BLOCK DIAGRAM

[100]

[120]

[100A]

[100]

[A]

Bottom view

Top view

SP GRILLE ASSEMBLY

BATTERY COVER ASSEMBLY

SP GRILLE ASSEMBLY

VOLUME KNOB

DISASSEMBLY PROCEDURE

Caution:

▪ Be sure to attach the removed filament tape just as it was before removal.

Lower Case Assembly (Time required: About 3 minutes)

1. Remove the 5 screws marked [120] and the 9 screws marked [100]. The lower case assembly can then be removed. (Fig.1)

* When installing the lower case assembly, first tighten the screw marked [100A] and then the remaining screws. (Fig.1)

PSR-E373/YPT-370

Fig.1

PSR-E373/YPT-370

[380A]

[380A] [380A]

[380A]

[380B]

[380C]

[370]

[380E] [380E]

[380E][380E]

[380D]

[380D] [380D]

DC-IN

PNRDMLCDPNL

MVR

Bottom view

DMLCD

LCD display

BACK LIGHT ASSEMBLY

RUBBER CONNECTOR

DMLCD Circuit Board (Time required: About 6 minutes)

1. Remove the lower case assembly. (See procedure 1)

2. Remove the 12 screws [380A]. The DMLCD circuit board can then be removed. (Fig.2)

* When installing the DMLCD circuit board, tighten the screws 1 through 2 in numerical order. (Fig.2)

* After replacing the DMLCD circuit board, execute "Factory Reset" in the Test program.

Fig.2

LCD (Time required: About 7 minutes)

1. Remove the lower case assembly. (See procedure 1)

2. Remove the DMLCD circuit board. (See procedure 2)

3. Remove the back light assembly. (Fig.3)

4. Remove the rubber connector. (Fig.3)

5. Remove the LCD display. (Fig.3)

* Avoid touching the conductive part of the rubber connector as much as possible. Should foreign matter or dirt adhere,

remove such contamination using adhesive tape or the like. Do not wipe off using solvents such as benzene or alcohol. (Fig.3)

Fig.3

PNR Circuit Board, PNL Circuit Board, MVR Circuit Board, DC-IN Circuit Board

VOLUME KNOB

1. Remove the lower case assembly. (See procedure 1)

l PNL, MVR Circuit Board (Time required: About 8 minutes)

1. Remove the 2 screws [380B]. The DC-IN circuit board can then be removed. (Fig.2)

2. Remove 3 screws [380C]. The MVR circuit board can then be removed. (Fig.2)

3. Remove the knob from the control panel surface. (Fig.1, Fig.4)

4. Remove the 16 screws marked [380D]. The PNL circuit board can then be removed. (Fig.2)

l PNR Circuit Board (Time required: About 6 minutes)

1. Remove 15 screws [380E]. The PNR circuit board can then be removed. (Fig.2)

PSR-E373/YPT-370

Fig.4

Speaker (Time required: About 4 minutes each)

1. Remove the lower case assembly. (See procedure 1)

2. Remove the 4 screws marked [370]. The speaker can then be removed. (Fig.2)

* Remove the right and left speakers in the same way.

PSR-E373/YPT-370

Speaker Grille (Time required: About 4 minutes each)

1. Remove the lower case assembly. (See procedure 1)

2. Release the 4 claws marked [A] of the SP grille. The SP grille can then be removed. (Fig.1)

* The right and left SP grilles can be removed in the same manner.

* SP grilles can be changed without removing the lower case assembly.

Tear the saran net. Release the 4 claws marked [A] of the SP grille by pushing them with the slotted screwdriver to inward. Remove the SP grille. (Fig.5)

Fig.5

PSR-E373/YPT-370

[120A]

[120B]

Top view

KEYBOARD RUBBER CONTACT

BOSS

16NS-C61

KEYBOARD

Disassembling the keyboard (time required: About 13 minutes)

1. Remove the lower case assembly. (See procedure 1)

l White keys and black keys

1. The white and black keys are grouped in single octave sets starting from the left side and consist of a total of five sets. Only the C6 white key, unlike the other keys, is not included in a set. (Fig.6)

2. To remove a set, remove the 2 each screws marked [120A]. The white and black keys in the set can then be removed. (Fig.6) When removing, unfasten the 2 hooks at the back of the black keys upward, and lift the white and black keys while pulling them toward you a little. (Photo 1)

3. To remove the white key C6, remove the screw marked [120B], unhook as described in previous procedure, and pull out toward you. (Fig.6)

* To reassemble after all white and black keys have been removed, first, mount by aligning the C3 to B3 white and black

keys with the boss, and then mount the remaining white and black keys. (Fig.6)

l Rubber contacts

1. Remove the white and black keys corresponding to the rubber contacts to be removed. (See Fig.6 and "●White keys and black keys" in procedure 7)

2. Remove the respective rubber contacts. (Fig.6)

Fig.6

+ 30 hidden pages