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Yamaha PORTATONE PSR-A300 Service Manual
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Yamaha PORTATONE PSR-A300 Service Manual

Yamaha PORTATONE PSR-A300 Service Manual

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PSR-A300
SERVICE MANUAL
CONTENTS
SPECIFICATIONS .................................................................3
PANEL LAYOUT .................................................................. 4
CIRCUIT BOARD LAYOUT & WIRING ................................ 5
BLOCK DIAGRAM ................................................................ 6
DISASSEMBLY PROCEDURE ............................................. 7
LSI PIN DESCRIPTION ....................................................... 12
IC BLOCK DIAGRAM ......................................................... 14
CIRCUIT BOARDS .............................................................. 15
TEST PROGRAM ...............................................................21
BACKUP & INITIALIZATION ............................................. 24
TRANSFERRING DATA BETWEEN
THE PSR-A300 and a COMPUTER ................................... 25
MIDI IMPLEMENTATION CHART ..................................... 27
MIDI DATA FORMAT ......................................................... 28
PARTS LIST
OVERALL CIRCUIT DIAGRAM
PK
001738
HAMAMATSU, JAPAN
1
Copyright (c) Yamaha Corporation. All rights reserved. PDF-K556
'05.07

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Summary of Contents for Yamaha PORTATONE PSR-A300

  • Page 1 BACKUP & INITIALIZATION ..........24 TRANSFERRING DATA BETWEEN THE PSR-A300 and a COMPUTER ........25 MIDI IMPLEMENTATION CHART ........27 MIDI DATA FORMAT ............28 PARTS LIST OVERALL CIRCUIT DIAGRAM 001738 HAMAMATSU, JAPAN Copyright (c) Yamaha Corporation. All rights reserved. PDF-K556 ’05.07...
  • Page 2 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 under- stood by the users, and have therefore not been restated.
  • Page 3 ACMP ON/OFF, SYNC START, START/STOP, Power Supply INTRO/ENDING/rit., MAIN/AUTO FILL • Fingering: Multi fingering • Adaptor: Yamaha PA-3B/3C AC power adaptor • Style Volume • Batteries: Six “AA” size, LR6 or equivalent batteries Education Feature Dimensions (W x D x H) •...
  • Page 4 PSR-A300 PANEL LAYOUT Front Panel Style List Display Voice List GrandPno !4 !5 @6 @7 Song List GrandPno Rear Panel o [STYLE] button !7 [TEMPO/TAP] button Front Panel q [STANDBY/ON] switch !8 [REC] button !0 [VOICE] button w [MASTER VOLUME] control @0 [START/STOP] button ! 1 Number buttons [0]-[9], [+/YES], [–/NO] @1 [PORTABLE GRAND] button...
  • Page 5 PSR-A300 CIRCUIT BOARD LAYOUT & WIRING Upper case side PNAM PNAM PNAM – – DMLCD – – Speaker R Speaker L Lower case side 61-L 61-H Connector Location Parts No. Destination Remarks Assembly WE138500 61H-CN1 DMLCD-CN831 WE138700 61H-CN2 DMLCD-CN832 WE138800 61L-CN5 DMLCD-CN833 Battery terminal A...
  • Page 6 TOUCH RESPONSE MIDI SUSTAIN DRIVER DRIVER LD301~304 LD201~212 TR201~203 TR301 JK602 JK601 JK603 PNAM SW MATRIX SW MATRIX SW301~305 SW201~212 (C1~B3) (C4~C6) CN201 CN301 PA0-PA5 PA6,PA7 SW MATRIX (11P) PB5-PB7 PB5,PB6 (9P) PC0-5,PD0-5 PITCH BEND SW501-525 +3.3D (12P) (12P) CN504 CN505 MIDI I / F SW37-61...
  • Page 7 PSR-A300 DISASSEMBLY PROCEDURE Caution: Be sure to attach the removed filament tape just as it was before removal. ∗ Lower Case Assembly When installing the DMLCD circuit board, tighten (Time required: About 1 minute) the screws 1 through 8 in numerical order. (Fig. 2) ∗...
  • Page 8 PSR-A300 PNAM Circuit Board (1/3, 2/3, 3/3) PNAM Circuit Board 1/3 Remove the lower case assembly. (See procedure 1) (Time required: About 3 minutes) PNAM Circuit Board 3/3 4-3-1 Remove the PNAM circuit board 3/3. (Time required: About 2 minutes) (See procedure 4-2) 4-2-1 Remove the volume knob from the control panel 4-3-2 Remove the twelve (12) screws marked [150B].
  • Page 9 PSR-A300 Speaker PN1 Circuit Board, PN2 Circuit Board (Time required: About 3 minutes) Remove the lower case assembly. (See procedure 1) (Time required: About 3 minutes each) Remove the four (4) screws marked [30]. The Remove the lower case keyboard assembly. speaker can then be removed.
  • Page 10 PSR-A300 Keyboard Assembly Circuit Board 61L, Circuit Board 61H 10-1 Remove the lower case keyboard assembly. 12-1 Remove the lower case keyboard assembly. (See procedure 7) (See procedure 7) 10-2 White and black keys for one octave unit are 12-2 Circuit Board 61L integrated as a set.
  • Page 11 PSR-A300 Top view Rubber Contact [180A] [180B] Rubber Contact Rubber Contact Rubber Contact Rubber Contact [180A] [180A] [180A] [180B] [180B] [190A] [190A] [190B] [180]: Bind Head Tapping Screw-B 3.0X8 MFZN2Y (EP600250) [190]: Bind Head Tapping Screw-P SP 3.0X12 MFZNBL (VZ313100) (Fig.7-1) (Fig.7-2) How to Remove Spring Terminals...
  • Page 12 PSR-A300 LSI PIN DESCRIPTION YMW767-VTZ (X6055A00) CPU (Central Processing Unit) DMLCD: IC301 NAME FUNCTION NAME FUNCTION Ground Ground 2 TESTN (SCMD) TEST Pin Power supply PLLBPN PLL bypass 67 LBN/LWRN/PF6 Low byte enable PLLV Power supply 68 UBN/UWRN/PF7 Upper byte enable Condenser connect RDN/PF4 Read enable...
  • Page 13 PSR-A300 NT3881DF-01 (X3148A00) LCD DRIVER (XZ987A00) LCD DRIVER ML9040A-B01GAZ03A NT3881EFG-01 (X6247A00) LCD DRIVER DMLCD: IC701 NAME FUNCTION NAME FUNCTION Data interface Segment signal output for LCD driving Common signal output for LCD driving Ground OSC1 Oscillator OSC2 Oscillator Power supply CLK1 Data latch clock Segment signal output for LCD...
  • Page 14 PSR-A300 IC BLOCK DIAGRAM NJM4580E (X2331A00) HD74LV32AFPEL (IS003200) SN74LV138ANSR (ISO013810) Dual Operational Amplifier Quad 2 Input OR DECODER DMLCD: IC432 DMLCD: IC204 DMLCD: IC831,832 A Output INPUT B Output Select A+INPUT INPUT B +INPUT Output Enable Output AK4385ET (X6040A00) D/A Converter DMLCD: IC431 MCLK MCLK...
  • Page 15 PSR-A300 CIRCUIT BOARDS DMLCD Circuit Board (X5910C0) ............17 PB Circuit Board (X5067A0) ..............20 PN1 Circuit Board (X6095A0)..............19 PN2 Circuit Board (X6095A0)..............20 PNAM 1/3 Circuit Board (X5911C0) ............15 PNAM 2/3 Circuit Board (X5911C0) ............16 PNAM 3/3 Circuit Board (X5911C0) ............16 61H Circuit Board (X2335C0) ..............
  • Page 16 PSR-A300 PNAM3/3 Circuit Board to PNAM1/3-CN401 MASTER VOLUME Component side PNAM2/3 Circuit Board to PNAM1/3-CN503 to DMLCD-CN531 to PN2-CN301 to PN1-CN201 PORTABLE SOUND PEVERB GRAND EFFECT KIT ON/OFF SPLIT DUAL HARMONY TOUCH ON/OFF ON/OFF ON/OFF ON/OFF VOICE STYLE METRONOME ON/OFF FUNCTION SONG DEMO...
  • Page 17 PSR-A300 DMLCD Circuit Board to PNAM2/3-CN601 Component side to 61H-CN2 to 61H-CN1 to 61L-CN5 to PB-CN1 Pattern side 2NA-WE00520...
  • Page 18 PSR-A300 61H Circuit Board to DMLCD-CN831 to 61L-CN4 to DMLCD-CN832 A’ Component side A’ 61L Circuit Board B’ to DMLCD-CN833 to 61H-CN3 B’ Component side 61H: 2NAKB-V869540 61L: 2NAKB-V869520...
  • Page 19 PSR-A300 PN1 Circuit Board ORIENTAL SCALE (SETTING) C’ to PNAM2/3-CN504 Component side C’ D’ Pattern side D’ 2NA-WE16730...
  • Page 20 PSR-A300 PN2 Circuit Board to PNAM2/3-CN505 ORIENTAL SCALE (MEMORY) Component side Pattern side PB Circuit Board PITCH BEND to DMLCD-CN901 Component side PN2: 2NA-WE16730 PB: 2NA-WC36570...
  • Page 21 PSR-A300 TEST PROGRAM ∗ If the test number 47 “Factory Set” is executed, the data already set will be lost. Preparation 1) Use an AC adaptor PA-3C or PA-32. 2) Measuring device: Frequency counter, which can detect thousandth digit, Level meter (with JIS-C filter) Note: Connect a load resistor of 33Ω...
  • Page 22 PSR-A300 Test No. LCD display Test descriptions, judging conditions, etc. 019 : Noise Connect the level meter (with JIS-C filter) to the L/R terminals of the [PHONES/OUTPUT]. (33Ω of load) Set the [MASTER VOLUME] to the maximum level and check the noise. •...
  • Page 23 PSR-A300 Switch test item list Turn SW Name LCD Display Note Number Turn SW Name LCD Display Note Number LEFT Left Record RIGHT Right PAUSE Pause LISTEN & LEARN Listen START/STOP StartStp TIMING Timing PORTABLE GRAND WAITING Waiting SOUND EFFECT SoundEff FUNCTION Function...
  • Page 24 PSR-A300 BACKUP & INITIALIZATION Backup Some internal parameters will revert to their default values if not saved before the power is turned off. In order to backup these parameters press and hold the [FUNCTION] button for longer than a second. FUNCTION BACKUP Hold for longer than a second.
  • Page 25 : 800 x 600 HighColor (16-bit) • Other : Microsoft® Internet Explorer®5.5 or higher NOTE: Visit the Yamaha website for more information on the latest version of Musicsoft Downloader (version 5.2.0 or higher) and how to install it. Connecting a personal computer After installing the Musicsoft Downloader application on your computer, connect the PSR-A300 as described below.
  • Page 26 PSR-A300 Transferring data from a computer You can transmit Song or Style File Format (SFF) files from your computer to your PSR-A300’s Flash Memory. For details about how to transmit the data using the Musicsoft Downloader application, refer to the Online help topic “Transferring Data Between the Computer and Instrument (for unprotected data)”...
  • Page 27 PSR-A300 MIDI IMPLEMENTATION CHART YAMAHA [ PORTATONE ] Date:15-Nov-2004 Model PSR-A300 MIDI Implementation Chart Version:1.0 Transmitted Recognized Remarks Function... Basic Default 1 - 16 1 - 16 Channel Changed Default Mode Messages Altered ************** Note 0 - 127 0 - 127...
  • Page 28 PSR-A300 MIDI DATA FORMAT NOTE: By default (factory settings) the instrument ordinarily <MIDI Master Tuning> F0H, 43H, 1nH, 27H, 30H, 00H, functions as a 16-channel multi-timbral tone generator, 00H, mm, ll, cc, F7H and incoming data does not affect the panel voices or •...
  • Page 29 PARTS LIST CONTENTS OVERALL ASSEMBLY ............2-3 LOWER CASE KEYBOARD ASSEMBLY ......4 KEYBOARD ASSEMBLY ............5 ELECTRICAL PARTS ............6-11 Notes : DESTINATION ABBREVIATIONS A : Australian model M : South African model B : British model O : Chinese model C : Canadian model Q : South-east Asia model D : German model...

  • Page 30: Overall Assembly

    PSR-A300 OVERALL ASSEMBLY Music rest Upper case assembly 340b 340a 140 (3/3) 340 350 Wheel assembly (1/3) (2/3) Lower case keyboard assembly: See page 4. Lower case assembly 280b 280a 280c Battery lid assembly...
  • Page 31 PITCH BEND VY750800 340a Wheel VT440100 340b Wheel Spring TX920280 Grease G-31KA 50g (VE96850) WE355400 Circuit Board WE803200 Emblem YAMAHA VA126100  Adhesive Tape 12X50  Adhesive Tape MY7# 12X50  (WB79380) CB817510 Cord Binder S-14B Nonwoven Fabric Cloth 22X8...

  • Page 32: Lower Case Keyboard Assembly

    PSR-A300 LOWER CASE KEYBOARD ASSEMBLY Keyboard assembly See page 5. BLACK PART NO. DESCRIPTION REMARKS REF NO. RANK LOWER CASE KEYBOARD ASSEMBLY PSR-A300 (WD89530) Lower Case WD843300 Keyboard Assembly 16N C61 P2M (WE12670) Connector Assembly MK1 12P L=220 WE138500 WE138700 Connector Assembly MK2 5P L=250 WE138800...

  • Page 33: Keyboard Assembly

    PSR-A300 KEYBOARD ASSEMBLY 150a 150c 150b 150d MK circuit board assembly Lower case: See page 4. PART NO. DESCRIPTION REMARKS REF NO. RANK KEYBOARD ASSEMBLY 16N C61 P2M PSR-A300 (WE12670) WB125200 White Key CEGB WB125300 White Key V 4 7 6 0 3 0 0 White Key VZ271700 Black Key...

  • Page 34: Electrical Parts

    PSR-A300 ELECTRICAL PARTS PART NO. DESCRIPTION REMARKS REF NO. RANK ELECTRICAL PARTS PSR-A300 WE200000 Circuit Board DMLCD (WE19990)(X5910C0) WE355400 Circuit Board (WE35530)(X5067A0) WE167400 Circuit Board (WE16730)(X6095A0) WE167500 Circuit Board (WE16730)(X6095A0) WE200100 Circuit Board PNAM (1/3-3/3) (X5911C0) V 8 6 9 5 5 0 0 Circuit Board 61H 16N2M C61 P2 (V869540)(X2335C0)
  • Page 35 PSR-A300 PART NO. DESCRIPTION REMARKS REF NO. RANK CN631 VK025300 Wire Trap 52147 9P TE CN831 VK025600 Wire Trap 52147 12P TE CN832 VK024900 Wire Trap 52147 5P TE CN833 VK025100 Wire Trap 52147 7P TE CN901 VK024700 Wire Trap 52147 3P TE IC131 X5889A00...
  • Page 36 PSR-A300 PART NO. DESCRIPTION REMARKS REF NO. RANK R0831 RD355100 Carbon Resistor (chip) 100.0 63M J RECT. -0833 RD355100 Carbon Resistor (chip) 100.0 63M J RECT. R0901 RD357470 Carbon Resistor (chip) 47.0K 63M J RECT. R0902 RD355100 Carbon Resistor (chip) 100.0 63M J RECT.
  • Page 37 PSR-A300  PART NO. DESCRIPTION REMARKS REF NO. RANK  C0106 VC694800 Semiconductive Cera. Cap. 0.1000 25V Z RX TP  C0107 WF405000 Electrolytic Cap. 100.00 10.0V TATET  C0401 VM902400 Semiconductive Cera. Cap. 0.1000 25V Z FORM.  C0401 VC694800 Semiconductive Cera.
  • Page 38 PSR-A300  PART NO. DESCRIPTION REMARKS REF NO. RANK  CN503 VY668700 Cable Holder 51048 10P TE  CN504 VK025500 Wire Trap 52147 11P TE CN505 VK025300 Wire Trap 52147 9P TE  CN601 V I 8 7 8 7 0 0 Cable Holder 51048 9P TE ...
  • Page 39 PSR-A300 PART NO. DESCRIPTION REMARKS REF NO. RANK R0608 V 2 5 4 9 2 0 0 Carbon Resistor 1.0K 1/6 J 26TP R0609 V 2 5 4 8 4 0 0 Carbon Resistor 220.0 1/6J 26TP TR101 WD926900 Transistor 2SB1342 TR102 I C 1 7 4 0 7 0...
  • Page 40 PSR-A300 OVERALL CIRCUIT DIAGRAM PSR-A300 MASK ROM 64M FLASH ROM 4M PROGRAM/WAVE MEMORY LCD DRVER 28CC1-2000001121 JACK DRAM SPEAKER R MIDI I/F MIDI 28CC1-2000001121 SWL01 SYSTEM MIDI RESET SUSTAIN PNAM REGULATOR 28CC1-8834546 3 +3.3V REGULATOR +2.5V BA33BC0FP (X5889A00) PNAM REGULATOR +3.3V DMLCD: IC131 OP AMP POWER SUPPLY...