Yamaha PortaTone PSR-270 Bedienungsanleitung

■■

■CONTENTS

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

PANEL LAYOUT .......................................................................................4

CIRCUIT BOARD LAYOUT .......................................................................5

BLOCK DIAGRAM .................................................................................... 6

DISASSEMBLY PROCEDURE .................................................................7

LSI PIN DESCRIPTION ..........................................................................12

IC BLOCK DIAGRAM.............................................................................14

CIRCUIT BOARDS ..................................................................................15

TEST PROGRAM& INITIALIZE ...............................................................17

PANEL VOICE LIST .................................................................................19

GM VOICE LIST.......................................................................................20

STYLELIST .............................................................................................21

MIDI IMPLEMENTATION CHART............................................................22

PARTS LIST

PANEL SWITCH TABLE

OVERALL CIRCUIT DIAGRAM

SERVICE MANUAL

PK 001617 HAMAMATSU,JAPAN

1.95K-504 I Printed in Japan’99.03

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 per

form as specified. For these reasons, we advise all Yamaha product owners that all service

required should be performed by an authorized Yamaha Retailer or the appointed service

repre sentative.

IMPORTANT: This presentation or sale of this manual to any individual or firm does not constitute authoriza-

tion, certification, recognition of 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. Modifica-

tions are, therefor, inevitable and changes in specification sre subject to change without notice or obligation to

retrofit. Should any discrepancy appear to exist, please contact the distributor's Service Division.

WARNING: Static discharges can destroy expensive components. Discharge any static electricity your

body may have accumulated by grounding yourself to the ground buss in the unit (heavy gauge

black wires connect to this buss).

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

apply power to the unit.

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 EVER!

Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or

expose eyes to solder / flux vapor!

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

before handling food.

PSR-270

WARNING

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

originally installed.

PSR-270

Keyboards

61 standard-size keys (C1 - C6), with Touch Response

andDynamicFilter.

DisplayLargemulti-functionLCDdisplay (backlit)

Setup STANDBY/ON

MASTERVOLUME:MIN-MAX

Panel Controls

OVERALL(st,+,-),FUNCTION,SONG,VOICE,STYLE,

PORTABLEGRAND,METRONOME,[0]-[9],[+](YES/FWD),

[-](NO/BWD),DEMO,TOUCH

Demo Song

3 songs

Voice 100 panel voices + 10 Drum Kits + 128 GM Voices

Polyphony: 32

Voice Set

DualVoiceMode

SplitVoiceMode

Auto Accompaniment

100 styles

AccompanimentControl:ACMPON/OFF,

SYNC-START,START/STOP,INTRO/ENDING,

MAINA/B(AUTOFILL)

BeatIndicator

Fingering:Multifingering

AccompanimentVolume

Yamaha Educational Suite

ChordGuide:Dictionary,SmartChord, EZ Chord

One Touch Setting

Preset A and B (for each style)

User (4 Setups x 4 Banks)

Overall controls

Tempo

Transpose

Tuning

AccompanimentVolume

SongVolume

MetronomeVolume

Effects Reverb : 8 types

Chorus : 4 types

DSP: 33types

Harmony : 26 types

Song 3 Preset Songs (Demo) + 3 User Songs

SongClear

Recording

Song

User Song : 3 Songs

RealTimeRecording/StepRecording

RecordingTracks :1, 2,3, 4, 5,6/CHORD

EZChord

8Banks+ Bank Chain

OTS(OneTouchSetting)

User : 4 Setups x 4 Banks

MIDI TransmitSettings

ReceiveSettings

LocalControl

Clock

BulkSend/Receive

InitialSend

Auxiliary jacks

PHONES/OUTPUT,DCIN10-12V,MIDIIN/OUT,

FOOTSWITCH

Amplifier

3.0W+3.0W

Speakers

12cm x 2

Power Consumption

15 W (when using PA-3B power adaptor)

Power Supply

Adaptor : Yamaha PA-3B AC power adaptor

Batteries : Six “D”size, SUM-1,R-20 orequivalent

batteries

Dimensions (W x D x H)

933 x 370 x 129 mm (36-3/4" x 14-5/8" x 5-1/6")

Weight5.7 kg (12.6 lbs.)

Supplied Accessories

MusicStand

Owner’sManual

Optional Accessories

Headphones : HPE-150

AC power adaptor : PA-3B

Footswitch : FC4,FC5

Keyboardstand : L-2L,L-2C

* Specifications and descriptions are for information purposes

only. Yamaha Corp. reserves the right to change or modify

products or specifications at any time without prior notice.

PSR-270

(1) MASTER VOLUME dial

(2) OVERALL buttons (s, t, +, -)

(3) FUNCTIONbutton

(4) SONG button

(5) STYLE button

(6) VOICE button

(7) Numeric keypad, +/- buttons

(8) PORTABLEGRANDbutton

(9) METRONOMEbutton

(10) ACMPON/OFF button

(11) SYNC-STARTbutton

(12) START/STOPbutton

(13) INTRO/ENDINGbutton

(14) MAIN A/B (AUTO FILL) buttons

(15) CHORDGUIDE button

(16) RECORDbutton

(17) ONE TOUCH SETTING / SONG MEMORY but-

tons

(18) HARMONYbutton

(19) REVERBbutton

(20) DUALbutton

(21) TOUCHbutton

(22) Power switch (STANDBY/ON)

(23) DEMObutton

(24) DC IN 10-12V jack

(25) PHONES/OUTPUTjack

(26) FOOT SWITCH jack

(27) MIDI IN, OUT terminals

Control Panel

Rear Panel

PHONES/

OUTPUT

DC IN 10-12V IN OUTMIDI

FOOT SWITCH

PSR-270

REF.NO. DESTINATION CONNECTOR REMARKS PARTLIST REF.NO. DESTINATION CONNECTOR REMARKS PARTLIST

ASSEMBLY Ref NO. ASSEMBLY Ref NO.

①AM/PN-CN902 PVS-CN904 PSW 5P/L180 AM/PN-W0902 ⑩AM/PN-CN907 INV-CN906 INV 2P/420 AM/PN-W0904

②AM/PN-CN801 PVS-CN804 AM-VR 4P/L440 AM/PN-W0801 ⑪INV-CN905 ELLIGHT EL 2P/250 470

③PVS-CN805 DM-CN501 DM-VR 4P/L270 PVS-W0805 ⑫AM/PN-CN701 AM/PN-CN702 AM/PN 9P/L160 AM/PN-W0704

④AM/PN-GND EARTH GND 1P/380 AM/PN-W0903 ⑬AM/PN-CN802 SPEAKER(L) SP-L 2P/230 AM/PN-W0803

⑤AM/PN-CN903 BATTERY BATT 2P/L380,510 450 ⑭AM/PN-CN803 SPEAKER(R) SP-R 2P/600 AM/PN-W0802

⑥MKS3-CN1 DM-CN102 DM-MKS 6P/220 440 ⑮MKS3-CN2 MK-L 160d 12P/190 160d

⑦AM/PN-CN703 DM-CN702 PN-SW 16P/L120 AM/PN-W0703 ⑯MK-H MK-L MK-B 12P/215 160e

⑧AM/PN-CN602 DM-CN601 MIDI 6P/L120 AM/PN-W0602 ⑰MKS3-CN3 MK-L MK-C 7P/250 160f

⑨AM/PN-CN901 DM-CN101 VDD 5P/L280 AM/PN-W0901 ⑱MKS3-CN4 MK-H MK-D 5P/L615 160g

PSR-270

28CA1-8813220

PSR-270

[330]: Bind Head Tapping Screw-P 3.0X12 MFZN2Y (EP600300)

[340]: Bind Head Tapping Screw-P 3.0X25 MFZN2Y (VK228100)

(Fig.1)

1 Lower Case Assembly

1-1 Remove the battery cover assembly. (Fig. 1)

1-2 Removethefourteen(14)screwsmarked[330]and

the two (2) screws marked [340]. The lower case

assembly can then be removed.

2 DM Circuit Board

2-1 Removethe lower case assembly. (SeeProcedure 1.)

2-2 Remove the four (4) screws marked [330]. The DM

circuit board with the shield box can then be re-

moved. (Fig. 2)

2-3 Removetheten(10)screwsmarked[310].TheDM

circuit board can then be removed. (Fig. 2)

3 INV Circuit Board

3-1 Removethe lower case assembly. (SeeProcedure 1.)

3-3 Remove the two (2) screws marked [320]. The INV

circuit board can then be removed. (Fig. 2)

4 Keyboard Assembly

4-1 Removethe lower case assembly. (SeeProcedure 1.)

4-2 Remove the three (3) screws marked [340]. The

keyboard assembly can then be removed. (Fig. 2)

PSR-270

(Fig. 2)

[310]: Bind Head Tapping Screw-P 3.0X8 MFZN2Y (EP600250)

[330]: Bind Head Tapping Screw-P 3.0X12 MFZN2Y (EP600300)

[340]: Bind Head Tapping Screw-P 3.0X25 MFZN2Y (VK228100)

(Fig.3)

5 PSV 3/3 Circuit Board

5-1 Remove the MASTER VOLUME knob on the con-

trol panel. (See Fig. 3.)

5-2 Removethe lower case assembly. (SeeProcedure 1.)

5-3 Remove the DM circuit board with the shield box.

(See Procedure 2.)

5-4 Remove the three (3) screws marked [320A]. The

PVS 3/3 circuit board can then be removed. (Fig. 4)

6 PVS 2/3 Circuit Board

6-1 Removethelower case assembly.(Seeprocedure1.)

6-2 Remove the two (2) screws marked [320B]. The

PSV 2/3 circuit board with the knob can then be

removed. (Fig. 4)

6-3 Pull the knob off the PSV 2/3 circuit board.

7 PVS 1/3 Circuit Board

7-1 Removethe lower case assembly. (SeeProcedure 1.)

7-2 Remove the DM circuit board with the shield box.

(See Procedure 2.)

7-3 Removethefour(4)screwsmarked[320C].ThePSV

1/3 circuit board can then be removed. (Fig. 4)

8 AMPN 1/2 Circuit Board

8-1 Removethe lower case assembly. (SeeProcedure 1.)

8-2 Remove the INV circuit board. (See Procedure 3.)

8-3 Remove the PSV 2/3 circuit board. (See Proce-

dure 6.)

8-4 Remove the fifteen (15) screws marked [320D]. The

AMPN1/2 circuit board can thenbe removed. (Fig.4)

9 AMPN 2/2 Circuit Board

9-1 Removethe lower case assembly. (SeeProcedure 1.)

9-2 Remove the DM circuit board with the shield box.

(See Procedure 2.)

9-3 Remove the eleven (11) screws marked [320E] .

The AMPN 2/2 circuit board can then be removed.

(Fig. 4)

PSR-270

(Fig.5)

[320]: Bind Head Tapping Screw-P 3.0X8 MFZN2Y (EP600280)

[330]: Bind Head Tapping Screw-P 4.0X8 MFZN2BL (VB931600)

(Fig.4)

10 LCD 10-5 Remove the AMPN 1/2 circuit board. (See Proce-

dure 8.)

10-6 Remove the two rubber contacts. Be careful not to

touch the conductive surface. The LCD can then

be removed. (Fig. 5)

10-1 Removethe lower case assembly. (SeeProcedure 1.)

10-2 Remove the INV circuit board. (See Procedure 3.)

10-3 Remove the PSV 2/3 circuit board. (See Proce-

dure 6.)

10-4 Remove the EL light.

* When replacing the EL light, solder the wires to

the EL light leads within 3 seconds a wire, keep-

ing the leads more than 3 mm.

* Do not bend the EL light.

PSR-270

[30]: Bind Head Tapping Screw-P 3.0X8 MFZN2Y (EP600280)

[340]: Bind Head Tapping Screw-P 3.0X25 MFZN2Y (VK228100)

(Fig. 6)

[350]: Bind Head Tapping Screw-P 4.0X8 MFZN2BL (VB931600)

(Fig. 7)

11 Speakers

11-1 Removethe lower case assembly. (SeeProcedure 1.) 11-2 Removetheeight(8)screwsmarked[350].Theright

and left speakers can then be removed. (Fig. 6)

12 Disassembling the keyboard assembly

12-1 Removethekeyboardassembly. (See Procedure1.)

12-2 Removethetwo(2)screwsmarked[30].TheMKS3

circuit board can then be removed. (Fig. 7)

12-3 Remove the MK circuit board while pressing the

fifteen (15) hooks (A) inward, and then remove the

rubber contact. (Fig. 8)

12-4 Removethe twenty-one(21) screws marked [140].

12-5 Remove the black keys from the lower notes. Af-

terwards, remove the white keys DFA and C', then

removethewhitekeysCEGBfromthehighernotes.

At this time, lift the keys from the front and slide

them towards you. The keys can then be removed

from the assembly. (Fig. 9)

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